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authorJeff Garzik <jeff@garzik.org>2006-04-14 20:48:55 -0400
committerJeff Garzik <jeff@garzik.org>2006-04-14 20:48:55 -0400
commit2acab771b7e676125cb8c96b61dcdefe9ba67e57 (patch)
tree86227af3c9ad0d90823e5488a86f7f453ed1837a /drivers/net/wan
parent201e06279823c73242de987f192f43d2b30e5331 (diff)
parent64541d19702cfdb7ea946fdc20faee849f6874b1 (diff)
Merge branch 'master'
Diffstat (limited to 'drivers/net/wan')
-rw-r--r--drivers/net/wan/Kconfig97
-rw-r--r--drivers/net/wan/Makefile13
-rw-r--r--drivers/net/wan/sdla_chdlc.c4428
-rw-r--r--drivers/net/wan/sdla_fr.c5061
-rw-r--r--drivers/net/wan/sdla_ft1.c345
-rw-r--r--drivers/net/wan/sdla_ppp.c3430
-rw-r--r--drivers/net/wan/sdla_x25.c5497
-rw-r--r--drivers/net/wan/sdladrv.c2314
-rw-r--r--drivers/net/wan/sdlamain.c1346
-rw-r--r--drivers/net/wan/wanpipe_multppp.c2358
10 files changed, 0 insertions, 24889 deletions
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index 883cf7da10f..b5328b0ff92 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -410,103 +410,6 @@ config WAN_ROUTER_DRIVERS
If unsure, say N.
-config VENDOR_SANGOMA
- tristate "Sangoma WANPIPE(tm) multiprotocol cards"
- depends on WAN_ROUTER_DRIVERS && WAN_ROUTER && (PCI || ISA) && BROKEN
- ---help---
- Driver for S514-PCI/ISA Synchronous Data Link Adapters (SDLA).
-
- WANPIPE from Sangoma Technologies Inc. <http://www.sangoma.com/>
- is a family of intelligent multiprotocol WAN adapters with data
- transfer rates up to 4Mbps. Cards support:
-
- - X.25, Frame Relay, PPP, Cisco HDLC protocols.
-
- - API for protocols like HDLC (LAPB), HDLC Streaming, X.25,
- Frame Relay and BiSync.
-
- - Ethernet Bridging over Frame Relay protocol.
-
- - MULTILINK PPP
-
- - Async PPP (Modem Dialup)
-
- The next questions will ask you about the protocols you want
- the driver to support.
-
- If you have one or more of these cards, say M to this option;
- and read <file:Documentation/networking/wan-router.txt>.
-
- To compile this driver as a module, choose M here: the
- module will be called wanpipe.
-
-config WANPIPE_CHDLC
- bool "WANPIPE Cisco HDLC support"
- depends on VENDOR_SANGOMA
- ---help---
- Connect a WANPIPE card to a leased line using the Cisco HDLC.
-
- - Supports Dual Port Cisco HDLC on the S514-PCI/S508-ISA cards
- which allows user to build applications using the HDLC streaming API.
-
- - CHDLC Streaming MULTILINK PPP that can bind multiple WANPIPE T1
- cards into a single logical channel.
-
- Say Y and the Cisco HDLC support, HDLC streaming API and
- MULTILINK PPP will be included in the driver.
-
-config WANPIPE_FR
- bool "WANPIPE Frame Relay support"
- depends on VENDOR_SANGOMA
- help
- Connect a WANPIPE card to a Frame Relay network, or use Frame Relay
- API to develop custom applications.
-
- Contains the Ethernet Bridging over Frame Relay feature, where
- a WANPIPE frame relay link can be directly connected to the Linux
- kernel bridge. The Frame Relay option is supported on S514-PCI
- and S508-ISA cards.
-
- Say Y and the Frame Relay support will be included in the driver.
-
-config WANPIPE_X25
- bool "WANPIPE X.25 support"
- depends on VENDOR_SANGOMA
- help
- Connect a WANPIPE card to an X.25 network.
-
- Includes the X.25 API support for custom applications over the
- X.25 protocol. The X.25 option is supported on S514-PCI and
- S508-ISA cards.
-
- Say Y and the X.25 support will be included in the driver.
-
-config WANPIPE_PPP
- bool "WANPIPE PPP support"
- depends on VENDOR_SANGOMA
- help
- Connect a WANPIPE card to a leased line using Point-to-Point
- Protocol (PPP).
-
- The PPP option is supported on S514-PCI/S508-ISA cards.
-
- Say Y and the PPP support will be included in the driver.
-
-config WANPIPE_MULTPPP
- bool "WANPIPE Multi-Port PPP support"
- depends on VENDOR_SANGOMA
- help
- Connect a WANPIPE card to a leased line using Point-to-Point
- Protocol (PPP).
-
- Uses in-kernel SyncPPP protocol over the Sangoma HDLC Streaming
- adapter. In this case each Sangoma adapter port can support an
- independent PPP connection. For example, a single Quad-Port PCI
- adapter can support up to four independent PPP links. The PPP
- option is supported on S514-PCI/S508-ISA cards.
-
- Say Y and the Multi-Port PPP support will be included in the driver.
-
config CYCLADES_SYNC
tristate "Cyclom 2X(tm) cards (EXPERIMENTAL)"
depends on WAN_ROUTER_DRIVERS && (PCI || ISA)
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index ce6c56b903e..823c6d5ab90 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -5,14 +5,6 @@
# Rewritten to use lists instead of if-statements.
#
-wanpipe-y := sdlamain.o sdla_ft1.o
-wanpipe-$(CONFIG_WANPIPE_X25) += sdla_x25.o
-wanpipe-$(CONFIG_WANPIPE_FR) += sdla_fr.o
-wanpipe-$(CONFIG_WANPIPE_CHDLC) += sdla_chdlc.o
-wanpipe-$(CONFIG_WANPIPE_PPP) += sdla_ppp.o
-wanpipe-$(CONFIG_WANPIPE_MULTPPP) += wanpipe_multppp.o
-wanpipe-objs := $(wanpipe-y)
-
cyclomx-y := cycx_main.o
cyclomx-$(CONFIG_CYCLOMX_X25) += cycx_x25.o
cyclomx-objs := $(cyclomx-y)
@@ -43,11 +35,6 @@ obj-$(CONFIG_LANMEDIA) += lmc/
obj-$(CONFIG_DLCI) += dlci.o
obj-$(CONFIG_SDLA) += sdla.o
-ifeq ($(CONFIG_WANPIPE_MULTPPP),y)
- obj-$(CONFIG_VENDOR_SANGOMA) += sdladrv.o wanpipe.o syncppp.o
-else
- obj-$(CONFIG_VENDOR_SANGOMA) += sdladrv.o wanpipe.o
-endif
obj-$(CONFIG_CYCLADES_SYNC) += cycx_drv.o cyclomx.o
obj-$(CONFIG_LAPBETHER) += lapbether.o
obj-$(CONFIG_SBNI) += sbni.o
diff --git a/drivers/net/wan/sdla_chdlc.c b/drivers/net/wan/sdla_chdlc.c
deleted file mode 100644
index 496d29237e9..00000000000
--- a/drivers/net/wan/sdla_chdlc.c
+++ /dev/null
@@ -1,4428 +0,0 @@
-/*****************************************************************************
-* sdla_chdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module.
-*
-* Authors: Nenad Corbic <ncorbic@sangoma.com>
-* Gideon Hack
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Feb 28, 2001 Nenad Corbic Updated if_tx_timeout() routine for
-* 2.4.X kernels.
-* Jan 25, 2001 Nenad Corbic Added a TTY Sync serial driver over the
-* HDLC streaming protocol
-* Added a TTY Async serial driver over the
-* Async protocol.
-* Dec 15, 2000 Nenad Corbic Updated for 2.4.X Kernel support
-* Nov 13, 2000 Nenad Corbic Added true interface type encoding option.
-* Tcpdump doesn't support CHDLC inteface
-* types, to fix this "true type" option will set
-* the interface type to RAW IP mode.
-* Nov 07, 2000 Nenad Corbic Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* Jun 20, 2000 Nenad Corbic Fixed the API IP ERROR bug. Caused by the
-* latest update.
-* May 09, 2000 Nenad Corbic Option to bring down an interface
-* upon disconnect.
-* Mar 23, 2000 Nenad Corbic Improved task queue, bh handling.
-* Mar 16, 2000 Nenad Corbic Fixed the SLARP Dynamic IP addressing.
-* Mar 06, 2000 Nenad Corbic Bug Fix: corrupted mbox recovery.
-* Feb 10, 2000 Gideon Hack Added ASYNC support.
-* Feb 09, 2000 Nenad Corbic Fixed two shutdown bugs in update() and
-* if_stats() functions.
-* Jan 24, 2000 Nenad Corbic Fixed a startup wanpipe state racing,
-* condition between if_open and isr.
-* Jan 10, 2000 Nenad Corbic Added new socket API support.
-* Dev 15, 1999 Nenad Corbic Fixed up header files for 2.0.X kernels
-* Nov 20, 1999 Nenad Corbic Fixed zero length API bug.
-* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup.
-* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing
-* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices.
-* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
-* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING).
-* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC.
-* Aug 07, 1998 David Fong Initial version.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/inet.h>
-#include <linux/if.h>
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/sdlapci.h>
-#include <asm/io.h>
-
-#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
-#include <linux/sdla_asy.h> /* CHDLC (async) API definitions */
-
-#include <linux/if_wanpipe_common.h> /* Socket Driver common area */
-#include <linux/if_wanpipe.h>
-
-/* TTY Includes */
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial.h>
-
-
-/****** Defines & Macros ****************************************************/
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP 0x01
-#define TMR_INT_ENABLED_UPDATE 0x02
-#define TMR_INT_ENABLED_CONFIG 0x10
-
-#define MAX_IP_ERRORS 10
-
-#define TTY_CHDLC_MAX_MTU 2000
-#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
-#define CHDLC_HDR_LEN 1
-
-#define CHDLC_API 0x01
-
-#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
-#define MAX_BH_BUFF 10
-
-//#define PRINT_DEBUG
-#ifdef PRINT_DEBUG
-#define dbg_printk(format, a...) printk(format, ## a)
-#else
-#define dbg_printk(format, a...)
-#endif
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with CHDLC specific data
- */
-
-typedef struct chdlc_private_area
-{
- wanpipe_common_t common;
- sdla_t *card;
- int TracingEnabled; /* For enabling Tracing */
- unsigned long curr_trace_addr; /* Used for Tracing */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
- unsigned long base_addr_trace_buffer;
- unsigned long end_addr_trace_buffer;
- unsigned short number_trace_elements;
- unsigned available_buffer_space;
- unsigned long router_start_time;
- unsigned char route_status;
- unsigned char route_removed;
- unsigned long tick_counter; /* For 5s timeout counter */
- unsigned long router_up_time;
- u32 IP_address; /* IP addressing */
- u32 IP_netmask;
- u32 ip_local;
- u32 ip_remote;
- u32 ip_local_tmp;
- u32 ip_remote_tmp;
- u8 ip_error;
- u8 config_chdlc;
- u8 config_chdlc_timeout;
- unsigned char mc; /* Mulitcast support on/off */
- unsigned short udp_pkt_lgth; /* udp packet processing */
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
- unsigned short timer_int_enabled;
- char update_comms_stats; /* updating comms stats */
-
- bh_data_t *bh_head; /* Circular buffer for chdlc_bh */
- unsigned long tq_working;
- volatile int bh_write;
- volatile int bh_read;
- atomic_t bh_buff_used;
-
- unsigned char interface_down;
-
- /* Polling work queue entry. Each interface
- * has its own work queue entry, which is used
- * to defer events from the interrupt */
- struct work_struct poll_work;
- struct timer_list poll_delay_timer;
-
- u8 gateway;
- u8 true_if_encoding;
- //FIXME: add driver stats as per frame relay!
-
-} chdlc_private_area_t;
-
-/* Route Status options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-/* variable for tracking how many interfaces to open for WANPIPE on the
- two ports */
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device* wandev);
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf);
-
-/* Network device interface */
-static int if_init(struct net_device* dev);
-static int if_open(struct net_device* dev);
-static int if_close(struct net_device* dev);
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr,
- unsigned len);
-
-static int if_rebuild_hdr (struct sk_buff *skb);
-static struct net_device_stats* if_stats(struct net_device* dev);
-
-static int if_send(struct sk_buff* skb, struct net_device* dev);
-
-/* CHDLC Firmware interface functions */
-static int chdlc_configure (sdla_t* card, void* data);
-static int chdlc_comm_enable (sdla_t* card);
-static int chdlc_read_version (sdla_t* card, char* str);
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode);
-static int chdlc_send (sdla_t* card, void* data, unsigned len);
-static int chdlc_read_comm_err_stats (sdla_t* card);
-static int chdlc_read_op_stats (sdla_t* card);
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
-
-
-static int chdlc_disable_comm_shutdown (sdla_t *card);
-static void if_tx_timeout(struct net_device *dev);
-
-/* Miscellaneous CHDLC Functions */
-static int set_chdlc_config (sdla_t* card);
-static void init_chdlc_tx_rx_buff( sdla_t* card);
-static int process_chdlc_exception(sdla_t *card);
-static int process_global_exception(sdla_t *card);
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area);
-static int configure_ip (sdla_t* card);
-static int unconfigure_ip (sdla_t* card);
-static void process_route(sdla_t *card);
-static void port_set_state (sdla_t *card, int);
-static int config_chdlc (sdla_t *card);
-static void disable_comm (sdla_t *card);
-
-static void trigger_chdlc_poll(struct net_device *dev);
-static void chdlc_poll(struct net_device *dev);
-static void chdlc_poll_delay (unsigned long dev_ptr);
-
-
-/* Miscellaneous asynchronous interface Functions */
-static int set_asy_config (sdla_t* card);
-static int asy_comm_enable (sdla_t* card);
-
-/* Interrupt handlers */
-static void wpc_isr (sdla_t* card);
-static void rx_intr (sdla_t* card);
-static void timer_intr(sdla_t *);
-
-/* Bottom half handlers */
-static void chdlc_work(struct net_device *dev);
-static int chdlc_work_cleanup(struct net_device *dev);
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
-
-/* Miscellaneous functions */
-static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev,
- struct sk_buff *skb);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static int intr_test( sdla_t* card);
-static int udp_pkt_type( struct sk_buff *skb , sdla_t* card);
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static unsigned short calc_checksum (char *, int);
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-
-
-static int Intr_test_counter;
-
-/* TTY Global Definitions */
-
-#define NR_PORTS 4
-#define WAN_TTY_MAJOR 226
-#define WAN_TTY_MINOR 0
-
-#define WAN_CARD(port) (tty_card_map[port])
-#define MIN_PORT 0
-#define MAX_PORT NR_PORTS-1
-
-#define CRC_LENGTH 2
-
-static int wanpipe_tty_init(sdla_t *card);
-static void wanpipe_tty_receive(sdla_t *, unsigned, unsigned int);
-static void wanpipe_tty_trigger_poll(sdla_t *card);
-
-static struct tty_driver serial_driver;
-static int tty_init_cnt=0;
-
-static struct serial_state rs_table[NR_PORTS];
-
-static char tty_driver_mode=WANOPT_TTY_SYNC;
-
-static char *opt_decode[] = {"NONE","CRTSCTS","XONXOFF-RX",
- "CRTSCTS XONXOFF-RX","XONXOFF-TX",
- "CRTSCTS XONXOFF-TX","CRTSCTS XONXOFF"};
-static char *p_decode[] = {"NONE","ODD","EVEN"};
-
-static void* tty_card_map[NR_PORTS] = {NULL,NULL,NULL,NULL};
-
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Cisco HDLC protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpc_init (sdla_t* card, wandev_conf_t* conf)
-{
- unsigned char port_num;
- int err;
- unsigned long max_permitted_baud = 0;
- SHARED_MEMORY_INFO_STRUCT *flags;
-
- union
- {
- char str[80];
- } u;
- volatile CHDLC_MAILBOX_STRUCT* mb;
- CHDLC_MAILBOX_STRUCT* mb1;
- unsigned long timeout;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_CHDLC) {
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
- }
-
- /* Find out which Port to use */
- if ((conf->comm_port == WANOPT_PRI) || (conf->comm_port == WANOPT_SEC)){
- if (card->next){
-
- if (conf->comm_port != card->next->u.c.comm_port){
- card->u.c.comm_port = conf->comm_port;
- }else{
- printk(KERN_INFO "%s: ERROR - %s port used!\n",
- card->wandev.name, PORT(conf->comm_port));
- return -EINVAL;
- }
- }else{
- card->u.c.comm_port = conf->comm_port;
- }
- }else{
- printk(KERN_INFO "%s: ERROR - Invalid Port Selected!\n",
- card->wandev.name);
- return -EINVAL;
- }
-
-
- /* Initialize protocol-specific fields */
- if(card->hw.type != SDLA_S514){
-
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase;
- }else{
- card->mbox = (void *) card->hw.dpmbase +
- SEC_BASE_ADDR_MB_STRUCT - PRI_BASE_ADDR_MB_STRUCT;
- }
- }else{
- /* for a S514 adapter, set a pointer to the actual mailbox in the */
- /* allocated virtual memory area */
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
- }else{
- card->mbox = (void *) card->hw.dpmbase + SEC_BASE_ADDR_MB_STRUCT;
- }
- }
-
- mb = mb1 = card->mbox;
-
- if (!card->configured){
-
- /* The board will place an 'I' in the return code to indicate that it is
- ready to accept commands. We expect this to be completed in less
- than 1 second. */
-
- timeout = jiffies;
- while (mb->return_code != 'I') /* Wait 1s for board to initialize */
- if ((jiffies - timeout) > 1*HZ) break;
-
- if (mb->return_code != 'I') {
- printk(KERN_INFO
- "%s: Initialization not completed by adapter\n",
- card->devname);
- printk(KERN_INFO "Please contact Sangoma representative.\n");
- return -EIO;
- }
- }
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
-
- if (chdlc_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: Running Cisco HDLC firmware v%s\n",
- card->devname, u.str);
-
- card->isr = &wpc_isr;
- card->poll = NULL;
- card->exec = NULL;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = NULL;
- card->wandev.udp_port = conf->udp_port;
- card->disable_comm = &disable_comm;
- card->wandev.new_if_cnt = 0;
-
- /* reset the number of times the 'update()' proc has been called */
- card->u.c.update_call_count = 0;
-
- card->wandev.ttl = conf->ttl;
- card->wandev.interface = conf->interface;
-
- if ((card->u.c.comm_port == WANOPT_SEC && conf->interface == WANOPT_V35)&&
- card->hw.type != SDLA_S514){
- printk(KERN_INFO "%s: ERROR - V35 Interface not supported on S508 %s port \n",
- card->devname, PORT(card->u.c.comm_port));
- return -EIO;
- }
-
- card->wandev.clocking = conf->clocking;
-
- port_num = card->u.c.comm_port;
-
- /* in API mode, we can configure for "receive only" buffering */
- if(card->hw.type == SDLA_S514) {
- card->u.c.receive_only = conf->receive_only;
- if(conf->receive_only) {
- printk(KERN_INFO
- "%s: Configured for 'receive only' mode\n",
- card->devname);
- }
- }
-
- /* Setup Port Bps */
-
- if(card->wandev.clocking) {
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
- /* For Primary Port 0 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- PRI_MAX_BAUD_RATE_S514 :
- PRI_MAX_BAUD_RATE_S508;
-
- }else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- SEC_MAX_BAUD_RATE_S514 :
- SEC_MAX_BAUD_RATE_S508;
- }
-
- if(conf->bps > max_permitted_baud) {
- conf->bps = max_permitted_baud;
- printk(KERN_INFO "%s: Baud too high!\n",
- card->wandev.name);
- printk(KERN_INFO "%s: Baud rate set to %lu bps\n",
- card->wandev.name, max_permitted_baud);
- }
- card->wandev.bps = conf->bps;
- }else{
- card->wandev.bps = 0;
- }
-
- /* Setup the Port MTU */
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
-
- /* For Primary Port 0 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, PRI_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- } else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, SEC_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- }
-
- /* Set up the interrupt status area */
- /* Read the CHDLC Configuration and obtain:
- * Ptr to shared memory infor struct
- * Use this pointer to calculate the value of card->u.c.flags !
- */
- mb1->buffer_length = 0;
- mb1->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
- if(err != COMMAND_OK) {
- if(card->hw.type != SDLA_S514)
- enable_irq(card->hw.irq);
-
- chdlc_error(card, err, mb1);
- return -EIO;
- }
-
- if(card->hw.type == SDLA_S514){
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct));
- }else{
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
- }
-
- flags = card->u.c.flags;
-
- /* This is for the ports link state */
- card->wandev.state = WAN_DUALPORT;
- card->u.c.state = WAN_DISCONNECTED;
-
-
- if (!card->wandev.piggyback){
- int err;
-
- /* Perform interrupt testing */
- err = intr_test(card);
-
- if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk(KERN_INFO "%s: Interrupt test failed (%i)\n",
- card->devname, Intr_test_counter);
- printk(KERN_INFO "%s: Please choose another interrupt\n",
- card->devname);
- return -EIO;
- }
-
- printk(KERN_INFO "%s: Interrupt test passed (%i)\n",
- card->devname, Intr_test_counter);
- card->configured = 1;
- }
-
- if ((card->tty_opt=conf->tty) == WANOPT_YES){
- int err;
- card->tty_minor = conf->tty_minor;
-
- /* On ASYNC connections internal clocking
- * is mandatory */
- if ((card->u.c.async_mode = conf->tty_mode)){
- card->wandev.clocking = 1;
- }
- err=wanpipe_tty_init(card);
- if (err){
- return err;
- }
- }else{
-
-
- if (chdlc_set_intr_mode(card, APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: "
- "Failed to set interrupt triggers!\n",
- card->devname);
- return -EIO;
- }
-
- /* Mask the Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- }
-
- /* If we are using CHDLC in backup mode, this flag will
- * indicate not to look for IP addresses in config_chdlc()*/
- card->u.c.backup = conf->backup;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics
- * This procedure is called when updating the PROC file system and returns
- * various communications statistics. These statistics are accumulated from 3
- * different locations:
- * 1) The 'if_stats' recorded for the device.
- * 2) Communication error statistics on the adapter.
- * 3) CHDLC operational statistics on the adapter.
- * The board level statistics are read during a timer interrupt. Note that we
- * read the error and operational statistics during consecitive timer ticks so
- * as to minimize the time that we are inside the interrupt handler.
- *
- */
-static int update(struct wan_device* wandev)
-{
- sdla_t* card = wandev->private;
- struct net_device* dev;
- volatile chdlc_private_area_t* chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags;
- unsigned long timeout;
-
- /* sanity checks */
- if((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if(wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- /* more sanity checks */
- if(!card->u.c.flags)
- return -ENODEV;
-
- if(test_bit(PERI_CRIT, (void*)&card->wandev.critical))
- return -EAGAIN;
-
- if((dev=card->wandev.dev) == NULL)
- return -ENODEV;
-
- if((chdlc_priv_area=dev->priv) == NULL)
- return -ENODEV;
-
- flags = card->u.c.flags;
- if(chdlc_priv_area->update_comms_stats){
- return -EAGAIN;
- }
-
- /* we will need 2 timer interrupts to complete the */
- /* reading of the statistics */
- chdlc_priv_area->update_comms_stats = 2;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UPDATE;
-
- /* wait a maximum of 1 second for the statistics to be updated */
- timeout = jiffies;
- for(;;) {
- if(chdlc_priv_area->update_comms_stats == 0)
- break;
- if ((jiffies - timeout) > (1 * HZ)){
- chdlc_priv_area->update_comms_stats = 0;
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf)
-{
- sdla_t* card = wandev->private;
- chdlc_private_area_t* chdlc_priv_area;
-
-
- printk(KERN_INFO "%s: Configuring Interface: %s\n",
- card->devname, conf->name);
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
- printk(KERN_INFO "%s: Invalid interface name!\n",
- card->devname);
- return -EINVAL;
- }
-
- /* allocate and initialize private data */
- chdlc_priv_area = kmalloc(sizeof(chdlc_private_area_t), GFP_KERNEL);
-
- if(chdlc_priv_area == NULL)
- return -ENOMEM;
-
- memset(chdlc_priv_area, 0, sizeof(chdlc_private_area_t));
-
- chdlc_priv_area->card = card;
- chdlc_priv_area->common.sk = NULL;
- chdlc_priv_area->common.func = NULL;
-
- /* initialize data */
- strcpy(card->u.c.if_name, conf->name);
-
- if(card->wandev.new_if_cnt > 0) {
- kfree(chdlc_priv_area);
- return -EEXIST;
- }
-
- card->wandev.new_if_cnt++;
-
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_priv_area->route_status = NO_ROUTE;
- chdlc_priv_area->route_removed = 0;
-
- card->u.c.async_mode = conf->async_mode;
-
- /* setup for asynchronous mode */
- if(conf->async_mode) {
- printk(KERN_INFO "%s: Configuring for asynchronous mode\n",
- wandev->name);
-
- if(card->u.c.comm_port == WANOPT_PRI) {
- printk(KERN_INFO
- "%s:Asynchronous mode on secondary port only\n",
- wandev->name);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- if(strcmp(conf->usedby, "WANPIPE") == 0) {
- printk(KERN_INFO
- "%s: Running in WANIPE Async Mode\n", wandev->name);
- card->u.c.usedby = WANPIPE;
- }else{
- card->u.c.usedby = API;
- }
-
- if(!card->wandev.clocking) {
- printk(KERN_INFO
- "%s: Asynch. clocking must be 'Internal'\n",
- wandev->name);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- if((card->wandev.bps < MIN_ASY_BAUD_RATE) ||
- (card->wandev.bps > MAX_ASY_BAUD_RATE)) {
- printk(KERN_INFO "%s: Selected baud rate is invalid.\n",
- wandev->name);
- printk(KERN_INFO "Must be between %u and %u bps.\n",
- MIN_ASY_BAUD_RATE, MAX_ASY_BAUD_RATE);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- card->u.c.api_options = 0;
- if (conf->asy_data_trans == WANOPT_YES) {
- card->u.c.api_options |= ASY_RX_DATA_TRANSPARENT;
- }
-
- card->u.c.protocol_options = 0;
- if (conf->rts_hs_for_receive == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_RTS_HS_FOR_RX;
- }
- if (conf->xon_xoff_hs_for_receive == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_XON_XOFF_HS_FOR_RX;
- }
- if (conf->xon_xoff_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_XON_XOFF_HS_FOR_TX;
- }
- if (conf->dcd_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_DCD_HS_FOR_TX;
- }
- if (conf->cts_hs_for_transmit == WANOPT_YES) {
- card->u.c.protocol_options |= ASY_CTS_HS_FOR_TX;
- }
-
- card->u.c.tx_bits_per_char = conf->tx_bits_per_char;
- card->u.c.rx_bits_per_char = conf->rx_bits_per_char;
- card->u.c.stop_bits = conf->stop_bits;
- card->u.c.parity = conf->parity;
- card->u.c.break_timer = conf->break_timer;
- card->u.c.inter_char_timer = conf->inter_char_timer;
- card->u.c.rx_complete_length = conf->rx_complete_length;
- card->u.c.xon_char = conf->xon_char;
-
- } else { /* setup for synchronous mode */
-
- card->u.c.protocol_options = 0;
- if (conf->ignore_dcd == WANOPT_YES){
- card->u.c.protocol_options |= IGNORE_DCD_FOR_LINK_STAT;
- }
- if (conf->ignore_cts == WANOPT_YES){
- card->u.c.protocol_options |= IGNORE_CTS_FOR_LINK_STAT;
- }
-
- if (conf->ignore_keepalive == WANOPT_YES) {
- card->u.c.protocol_options |=
- IGNORE_KPALV_FOR_LINK_STAT;
- card->u.c.kpalv_tx = MIN_Tx_KPALV_TIMER;
- card->u.c.kpalv_rx = MIN_Rx_KPALV_TIMER;
- card->u.c.kpalv_err = MIN_KPALV_ERR_TOL;
-
- } else { /* Do not ignore keepalives */
- card->u.c.kpalv_tx =
- ((conf->keepalive_tx_tmr - MIN_Tx_KPALV_TIMER)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_tx_tmr,MAX_Tx_KPALV_TIMER) :
- DEFAULT_Tx_KPALV_TIMER;
-
- card->u.c.kpalv_rx =
- ((conf->keepalive_rx_tmr - MIN_Rx_KPALV_TIMER)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_rx_tmr,MAX_Rx_KPALV_TIMER) :
- DEFAULT_Rx_KPALV_TIMER;
-
- card->u.c.kpalv_err =
- ((conf->keepalive_err_margin-MIN_KPALV_ERR_TOL)
- >= 0) ?
- min_t(unsigned int, conf->keepalive_err_margin,
- MAX_KPALV_ERR_TOL) :
- DEFAULT_KPALV_ERR_TOL;
- }
-
- /* Setup slarp timer to control delay between slarps */
- card->u.c.slarp_timer =
- ((conf->slarp_timer - MIN_SLARP_REQ_TIMER) >= 0) ?
- min_t(unsigned int, conf->slarp_timer, MAX_SLARP_REQ_TIMER) :
- DEFAULT_SLARP_REQ_TIMER;
-
- if (conf->hdlc_streaming == WANOPT_YES) {
- printk(KERN_INFO "%s: Enabling HDLC STREAMING Mode\n",
- wandev->name);
- card->u.c.protocol_options = HDLC_STREAMING_MODE;
- }
-
- if ((chdlc_priv_area->true_if_encoding = conf->true_if_encoding) == WANOPT_YES){
- printk(KERN_INFO
- "%s: Enabling, true interface type encoding.\n",
- card->devname);
- }
-
- /* Setup wanpipe as a router (WANPIPE) or as an API */
- if( strcmp(conf->usedby, "WANPIPE") == 0) {
-
- printk(KERN_INFO "%s: Running in WANPIPE mode!\n",
- wandev->name);
- card->u.c.usedby = WANPIPE;
-
- /* Option to bring down the interface when
- * the link goes down */
- if (conf->if_down){
- set_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down);
- printk(KERN_INFO
- "%s: Dynamic interface configuration enabled\n",
- card->devname);
- }
-
- } else if( strcmp(conf->usedby, "API") == 0) {
- card->u.c.usedby = API;
- printk(KERN_INFO "%s: Running in API mode !\n",
- wandev->name);
- }
- }
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((chdlc_priv_area->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,card->u.c.if_name);
- }
-
- /* Get Multicast Information */
- chdlc_priv_area->mc = conf->mc;
-
- /* prepare network device data space for registration */
- strcpy(dev->name,card->u.c.if_name);
-
- dev->init = &if_init;
- dev->priv = chdlc_priv_area;
-
- /* Initialize the polling work routine */
- INIT_WORK(&chdlc_priv_area->poll_work, (void*)(void*)chdlc_poll, dev);
-
- /* Initialize the polling delay timer */
- init_timer(&chdlc_priv_area->poll_delay_timer);
- chdlc_priv_area->poll_delay_timer.data = (unsigned long)dev;
- chdlc_priv_area->poll_delay_timer.function = chdlc_poll_delay;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration. Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct wan_device* wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* Initialize media-specific parameters */
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Mulitcasting if user selected */
- if (chdlc_priv_area->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- if (chdlc_priv_area->true_if_encoding){
- dev->type = ARPHRD_HDLC; /* This breaks the tcpdump */
- }else{
- dev->type = ARPHRD_PPP;
- }
-
- dev->mtu = card->wandev.mtu;
- /* for API usage, add the API header size to the requested MTU size */
- if(card->u.c.usedby == API) {
- dev->mtu += sizeof(api_tx_hdr_t);
- }
-
- dev->hard_header_len = CHDLC_HDR_LEN;
-
- /* Initialize hardware parameters */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length
- * If too low packets will not be retransmitted
- * by stack.
- */
- dev->tx_queue_len = 100;
- SET_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct timeval tv;
- int err = 0;
-
- /* Only one open per interface is allowed */
-
- if (netif_running(dev))
- return -EBUSY;
-
- /* Initialize the work queue entry */
- chdlc_priv_area->tq_working=0;
-
- INIT_WORK(&chdlc_priv_area->common.wanpipe_work,
- (void *)(void *)chdlc_work, dev);
-
- /* Allocate and initialize BH circular buffer */
- /* Add 1 to MAX_BH_BUFF so we don't have test with (MAX_BH_BUFF-1) */
- chdlc_priv_area->bh_head = kmalloc((sizeof(bh_data_t)*(MAX_BH_BUFF+1)),GFP_ATOMIC);
- memset(chdlc_priv_area->bh_head,0,(sizeof(bh_data_t)*(MAX_BH_BUFF+1)));
- atomic_set(&chdlc_priv_area->bh_buff_used, 0);
-
- do_gettimeofday(&tv);
- chdlc_priv_area->router_start_time = tv.tv_sec;
-
- netif_start_queue(dev);
-
- wanpipe_open(card);
-
- /* TTY is configured during wanpipe_set_termios
- * call, not here */
- if (card->tty_opt)
- return err;
-
- set_bit(0,&chdlc_priv_area->config_chdlc);
- chdlc_priv_area->config_chdlc_timeout=jiffies;
-
- /* Start the CHDLC configuration after 1sec delay.
- * This will give the interface initilization time
- * to finish its configuration */
- mod_timer(&chdlc_priv_area->poll_delay_timer, jiffies + HZ);
- return err;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last close, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
-
- if (chdlc_priv_area->bh_head){
- int i;
- struct sk_buff *skb;
-
- for (i=0; i<(MAX_BH_BUFF+1); i++){
- skb = ((bh_data_t *)&chdlc_priv_area->bh_head[i])->skb;
- if (skb != NULL){
- dev_kfree_skb_any(skb);
- }
- }
- kfree(chdlc_priv_area->bh_head);
- chdlc_priv_area->bh_head=NULL;
- }
-
- netif_stop_queue(dev);
- wanpipe_close(card);
- del_timer(&chdlc_priv_area->poll_delay_timer);
- return 0;
-}
-
-static void disable_comm (sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- if (card->u.c.comm_enabled){
- chdlc_disable_comm_shutdown (card);
- }else{
- flags->interrupt_info_struct.interrupt_permission = 0;
- }
-
- if (!tty_init_cnt)
- return;
-
- if (card->tty_opt){
- struct serial_state * state;
- if (!(--tty_init_cnt)){
- int e1;
- serial_driver.refcount=0;
-
- if ((e1 = tty_unregister_driver(&serial_driver)))
- printk("SERIAL: failed to unregister serial driver (%d)\n",
- e1);
- printk(KERN_INFO "%s: Unregistering TTY Driver, Major %i\n",
- card->devname,WAN_TTY_MAJOR);
- }
- card->tty=NULL;
- tty_card_map[card->tty_minor]=NULL;
- state = &rs_table[card->tty_minor];
- memset(state, 0, sizeof(*state));
- }
- return;
-}
-
-
-/*============================================================================
- * Build media header.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If packet type is not
- * supported, set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr,
- unsigned len)
-{
- skb->protocol = htons(type);
-
- return CHDLC_HDR_LEN;
-}
-
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++card->wandev.stats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
- netif_wake_queue (dev);
-}
-
-
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff *skb)
-{
- return 1;
-}
-
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-static int if_send(struct sk_buff* skb, struct net_device* dev)
-{
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- sdla_t *card = chdlc_priv_area->card;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
- int udp_type = 0;
- unsigned long smp_flags;
- int err=0;
-
- netif_stop_queue(dev);
-
- if (skb == NULL){
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
-
- netif_wake_queue(dev);
- return 0;
- }
-
- if (ntohs(skb->protocol) != htons(PVC_PROT)){
-
- /* check the udp packet type */
-
- udp_type = udp_pkt_type(skb, card);
-
- if (udp_type == UDP_CPIPE_TYPE){
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
- chdlc_priv_area)){
- chdlc_int->interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- netif_start_queue(dev);
- return 0;
- }
-
- /* check to see if the source IP address is a broadcast or */
- /* multicast IP address */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
- }
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if(test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- printk(KERN_INFO "%s: Critical in if_send: %lx\n",
- card->wandev.name,card->wandev.critical);
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- if(card->u.c.state != WAN_CONNECTED){
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
-
- }else if(!skb->protocol){
- ++card->wandev.stats.tx_errors;
- netif_start_queue(dev);
-
- }else {
- void* data = skb->data;
- unsigned len = skb->len;
- unsigned char attr;
-
- /* If it's an API packet pull off the API
- * header. Also check that the packet size
- * is larger than the API header
- */
- if (card->u.c.usedby == API){
- api_tx_hdr_t* api_tx_hdr;
-
- /* discard the frame if we are configured for */
- /* 'receive only' mode or if there is no data */
- if (card->u.c.receive_only ||
- (len <= sizeof(api_tx_hdr_t))) {
-
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- api_tx_hdr = (api_tx_hdr_t *)data;
- attr = api_tx_hdr->attr;
- data += sizeof(api_tx_hdr_t);
- len -= sizeof(api_tx_hdr_t);
- }
-
- if(chdlc_send(card, data, len)) {
- netif_stop_queue(dev);
- }else{
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += len;
-
- netif_start_queue(dev);
-
- dev->trans_start = jiffies;
- }
- }
-
-if_send_exit_crit:
-
- if (!(err=netif_queue_stopped(dev))) {
- dev_kfree_skb_any(skb);
- }else{
- chdlc_priv_area->tick_counter = jiffies;
- chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
- }
-
- clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
- if(card->hw.type != SDLA_S514){
- s508_unlock(card,&smp_flags);
- }
-
- return err;
-}
-
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- */
-
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb)
-{
- u32 src_ip_addr;
- u32 broadcast_ip_addr = 0;
- struct in_device *in_dev;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 12);
-
- /* read the IP broadcast address for the device */
- in_dev = dev->ip_ptr;
- if(in_dev != NULL) {
- struct in_ifaddr *ifa= in_dev->ifa_list;
- if(ifa != NULL)
- broadcast_ip_addr = ifa->ifa_broadcast;
- else
- return 0;
- }
-
- /* check if the IP Source Address is a Broadcast address */
- if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
- printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- /* check if the IP Source Address is a Multicast address */
- if((ntohl(src_ip_addr) >= 0xE0000001) &&
- (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
- printk(KERN_INFO "%s: Multicast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
-
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
- chdlc_udp_pkt_t *c_udp_pkt = (chdlc_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* fill in UDP reply */
- c_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound = 1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- c_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = c_udp_pkt->udp_pkt.udp_src_port;
- c_udp_pkt->udp_pkt.udp_src_port =
- c_udp_pkt->udp_pkt.udp_dst_port;
- c_udp_pkt->udp_pkt.udp_dst_port = temp;
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
-
- /* calculate UDP checksum */
- c_udp_pkt->udp_pkt.udp_checksum = 0;
- c_udp_pkt->udp_pkt.udp_checksum = calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = len;
- temp = (ip_length<<8)|(ip_length>>8);
- c_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = c_udp_pkt->ip_pkt.ip_src_address;
- c_udp_pkt->ip_pkt.ip_src_address = c_udp_pkt->ip_pkt.ip_dst_address;
- c_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
- /* fill in IP checksum */
- c_udp_pkt->ip_pkt.hdr_checksum = 0;
- c_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
- return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats* if_stats(struct net_device* dev)
-{
- sdla_t *my_card;
- chdlc_private_area_t* chdlc_priv_area;
-
- if ((chdlc_priv_area=dev->priv) == NULL)
- return NULL;
-
- my_card = chdlc_priv_area->card;
- return &my_card->wandev.stats;
-}
-
-
-/****** Cisco HDLC Firmware Interface Functions *******************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int chdlc_read_version (sdla_t* card, char* str)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int len;
- char err;
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- }
- else if (str) { /* is not null */
- len = mb->buffer_length;
- memcpy(str, mb->data, len);
- str[len] = '\0';
- }
- return (err);
-}
-
-/*-----------------------------------------------------------------------------
- * Configure CHDLC firmware.
- */
-static int chdlc_configure (sdla_t* card, void* data)
-{
- int err;
- CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
- int data_length = sizeof(CHDLC_CONFIGURATION_STRUCT);
-
- mailbox->buffer_length = data_length;
- memcpy(mailbox->data, data, data_length);
- mailbox->command = SET_CHDLC_CONFIGURATION;
- err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) chdlc_error (card, err, mailbox);
-
- return err;
-}
-
-
-/*============================================================================
- * Set interrupt mode -- HDLC Version.
- */
-
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_INT_TRIGGERS_STRUCT* int_data =
- (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
- int err;
-
- int_data->CHDLC_interrupt_triggers = mode;
- int_data->IRQ = card->hw.irq;
- int_data->interrupt_timer = 1;
-
- mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
- mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mb);
- return err;
-}
-
-
-/*===========================================================
- * chdlc_disable_comm_shutdown
- *
- * Shutdown() disables the communications. We must
- * have a sparate functions, because we must not
- * call chdlc_error() hander since the private
- * area has already been replaced */
-
-static int chdlc_disable_comm_shutdown (sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_INT_TRIGGERS_STRUCT* int_data =
- (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
- int err;
-
- /* Disable Interrutps */
- int_data->CHDLC_interrupt_triggers = 0;
- int_data->IRQ = card->hw.irq;
- int_data->interrupt_timer = 1;
-
- mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
- mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- /* Disable Communications */
-
- if (card->u.c.async_mode) {
- mb->command = DISABLE_ASY_COMMUNICATIONS;
- }else{
- mb->command = DISABLE_CHDLC_COMMUNICATIONS;
- }
-
- mb->buffer_length = 0;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- card->u.c.comm_enabled = 0;
-
- return 0;
-}
-
-/*============================================================================
- * Enable communications.
- */
-
-static int chdlc_comm_enable (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = ENABLE_CHDLC_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card, err, mb);
- else
- card->u.c.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Read communication error statistics.
- */
-static int chdlc_read_comm_err_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_COMMS_ERROR_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Read CHDLC operational statistics.
- */
-static int chdlc_read_op_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_OPERATIONAL_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Update communications error and general packet statistics.
- */
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- COMMS_ERROR_STATS_STRUCT* err_stats;
- CHDLC_OPERATIONAL_STATS_STRUCT *op_stats;
-
- /* on the first timer interrupt, read the comms error statistics */
- if(chdlc_priv_area->update_comms_stats == 2) {
- if(chdlc_read_comm_err_stats(card))
- return 1;
- err_stats = (COMMS_ERROR_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_over_errors =
- err_stats->Rx_overrun_err_count;
- card->wandev.stats.rx_crc_errors =
- err_stats->CRC_err_count;
- card->wandev.stats.rx_frame_errors =
- err_stats->Rx_abort_count;
- card->wandev.stats.rx_fifo_errors =
- err_stats->Rx_dis_pri_bfrs_full_count;
- card->wandev.stats.rx_missed_errors =
- card->wandev.stats.rx_fifo_errors;
- card->wandev.stats.tx_aborted_errors =
- err_stats->sec_Tx_abort_count;
- }
-
- /* on the second timer interrupt, read the operational statistics */
- else {
- if(chdlc_read_op_stats(card))
- return 1;
- op_stats = (CHDLC_OPERATIONAL_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_length_errors =
- (op_stats->Rx_Data_discard_short_count +
- op_stats->Rx_Data_discard_long_count);
- }
-
- return 0;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-static int chdlc_send (sdla_t* card, void* data, unsigned len)
-{
- CHDLC_DATA_TX_STATUS_EL_STRUCT *txbuf = card->u.c.txbuf;
-
- if (txbuf->opp_flag)
- return 1;
-
- sdla_poke(&card->hw, txbuf->ptr_data_bfr, data, len);
-
- txbuf->frame_length = len;
- txbuf->opp_flag = 1; /* start transmission */
-
- /* Update transmit buffer control fields */
- card->u.c.txbuf = ++txbuf;
-
- if ((void*)txbuf > card->u.c.txbuf_last)
- card->u.c.txbuf = card->u.c.txbuf_base;
-
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
-{
- unsigned cmd = mb->command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_INFO "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- case S514_BOTH_PORTS_SAME_CLK_MODE:
- if(cmd == SET_CHDLC_CONFIGURATION) {
- printk(KERN_INFO
- "%s: Configure both ports for the same clock source\n",
- card->devname);
- break;
- }
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
- card->devname, cmd, err);
- }
-
- return 0;
-}
-
-
-/********** Bottom Half Handlers ********************************************/
-
-/* NOTE: There is no API, BH support for Kernels lower than 2.2.X.
- * DO NOT INSERT ANY CODE HERE, NOTICE THE
- * PREPROCESSOR STATEMENT ABOVE, UNLESS YOU KNOW WHAT YOU ARE
- * DOING */
-
-static void chdlc_work(struct net_device * dev)
-{
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
- struct sk_buff *skb;
-
- if (atomic_read(&chan->bh_buff_used) == 0){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- while (atomic_read(&chan->bh_buff_used)){
-
- skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb;
-
- if (skb != NULL){
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- ++card->wandev.stats.rx_dropped;
- dev_kfree_skb_any(skb);
- chdlc_work_cleanup(dev);
- continue;
- }
-
- if (chan->common.func(skb,dev,chan->common.sk) != 0){
- /* Sock full cannot send, queue us for another
- * try */
- atomic_set(&chan->common.receive_block,1);
- return;
- }else{
- chdlc_work_cleanup(dev);
- }
- }else{
- chdlc_work_cleanup(dev);
- }
- }
- clear_bit(0, &chan->tq_working);
-
- return;
-}
-
-static int chdlc_work_cleanup(struct net_device *dev)
-{
- chdlc_private_area_t* chan = dev->priv;
-
- ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
-
- if (chan->bh_read == MAX_BH_BUFF){
- chan->bh_read=0;
- }else{
- ++chan->bh_read;
- }
-
- atomic_dec(&chan->bh_buff_used);
- return 0;
-}
-
-
-
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
-{
- /* Check for full */
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- if (atomic_read(&chan->bh_buff_used) == (MAX_BH_BUFF+1)){
- ++card->wandev.stats.rx_dropped;
- dev_kfree_skb_any(skb);
- return 1;
- }
-
- ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb;
-
- if (chan->bh_write == MAX_BH_BUFF){
- chan->bh_write=0;
- }else{
- ++chan->bh_write;
- }
-
- atomic_inc(&chan->bh_buff_used);
-
- return 0;
-}
-
-/* END OF API BH Support */
-
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * Cisco HDLC interrupt service routine.
- */
-static void wpc_isr (sdla_t* card)
-{
- struct net_device* dev;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
- int i;
- sdla_t *my_card;
-
-
- /* Check for which port the interrupt has been generated
- * Since Secondary Port is piggybacking on the Primary
- * the check must be done here.
- */
-
- flags = card->u.c.flags;
- if (!flags->interrupt_info_struct.interrupt_type){
- /* Check for a second port (piggybacking) */
- if ((my_card = card->next)){
- flags = my_card->u.c.flags;
- if (flags->interrupt_info_struct.interrupt_type){
- card = my_card;
- card->isr(card);
- return;
- }
- }
- }
-
- flags = card->u.c.flags;
- card->in_isr = 1;
- dev = card->wandev.dev;
-
- /* If we get an interrupt with no network device, stop the interrupts
- * and issue an error */
- if (!card->tty_opt && !dev &&
- flags->interrupt_info_struct.interrupt_type !=
- COMMAND_COMPLETE_APP_INT_PEND){
-
- goto isr_done;
- }
-
- /* if critical due to peripheral operations
- * ie. update() or getstats() then reset the interrupt and
- * wait for the board to retrigger.
- */
- if(test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "ISR CRIT TO PERI\n");
- goto isr_done;
- }
-
- /* On a 508 Card, if critical due to if_send
- * Major Error !!! */
- if(card->hw.type != SDLA_S514) {
- if(test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "%s: Critical while in ISR: %lx\n",
- card->devname, card->wandev.critical);
- card->in_isr = 0;
- flags->interrupt_info_struct.interrupt_type = 0;
- return;
- }
- }
-
- switch(flags->interrupt_info_struct.interrupt_type) {
-
- case RX_APP_INT_PEND: /* 0x01: receive interrupt */
- rx_intr(card);
- break;
-
- case TX_APP_INT_PEND: /* 0x02: transmit interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TX_FRAME;
-
- if (card->tty_opt){
- wanpipe_tty_trigger_poll(card);
- break;
- }
-
- if (dev && netif_queue_stopped(dev)){
- if (card->u.c.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- break;
-
- case COMMAND_COMPLETE_APP_INT_PEND:/* 0x04: cmd cplt */
- ++ Intr_test_counter;
- break;
-
- case CHDLC_EXCEP_COND_APP_INT_PEND: /* 0x20 */
- process_chdlc_exception(card);
- break;
-
- case GLOBAL_EXCEP_COND_APP_INT_PEND:
- process_global_exception(card);
- break;
-
- case TIMER_APP_INT_PEND:
- timer_intr(card);
- break;
-
- default:
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname,
- flags->interrupt_info_struct.interrupt_type);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
- break;
- }
-
-isr_done:
-
- card->in_isr = 0;
- flags->interrupt_info_struct.interrupt_type = 0;
- return;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr (sdla_t* card)
-{
- struct net_device *dev;
- chdlc_private_area_t *chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- CHDLC_DATA_RX_STATUS_EL_STRUCT *rxbuf = card->u.c.rxmb;
- struct sk_buff *skb;
- unsigned len;
- unsigned addr = rxbuf->ptr_data_bfr;
- void *buf;
- int i,udp_type;
-
- if (rxbuf->opp_flag != 0x01) {
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)rxbuf, rxbuf->opp_flag);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
-
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it measn that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- chdlc_set_intr_mode(card,0);
- return;
- }
-
- len = rxbuf->frame_length;
-
- if (card->tty_opt){
-
- if (rxbuf->error_flag){
- goto rx_exit;
- }
-
- if (len <= CRC_LENGTH){
- goto rx_exit;
- }
-
- if (!card->u.c.async_mode){
- len -= CRC_LENGTH;
- }
-
- wanpipe_tty_receive(card,addr,len);
- goto rx_exit;
- }
-
- dev = card->wandev.dev;
-
- if (!dev){
- goto rx_exit;
- }
-
- if (!netif_running(dev))
- goto rx_exit;
-
- chdlc_priv_area = dev->priv;
-
-
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
-
- if (skb == NULL) {
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- ++card->wandev.stats.rx_dropped;
- goto rx_exit;
- }
-
- /* Copy data to the socket buffer */
- if((addr + len) > card->u.c.rx_top + 1) {
- unsigned tmp = card->u.c.rx_top - addr + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.c.rx_base;
- len -= tmp;
- }
-
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
-
- skb->protocol = htons(ETH_P_IP);
-
- card->wandev.stats.rx_packets ++;
- card->wandev.stats.rx_bytes += skb->len;
- udp_type = udp_pkt_type( skb, card );
-
- if(udp_type == UDP_CPIPE_TYPE) {
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK,
- card, skb, dev, chdlc_priv_area)) {
- flags->interrupt_info_struct.
- interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- } else if(card->u.c.usedby == API) {
-
- api_rx_hdr_t* api_rx_hdr;
- skb_push(skb, sizeof(api_rx_hdr_t));
- api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
- api_rx_hdr->error_flag = rxbuf->error_flag;
- api_rx_hdr->time_stamp = rxbuf->time_stamp;
-
- skb->protocol = htons(PVC_PROT);
- skb->mac.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = WAN_PACKET_DATA;
-
- bh_enqueue(dev, skb);
-
- if (!test_and_set_bit(0,&chdlc_priv_area->tq_working))
- wanpipe_queue_work(&chdlc_priv_area->common.wanpipe_work);
- }else{
- /* FIXME: we should check to see if the received packet is a
- multicast packet so that we can increment the multicast
- statistic
- ++ chdlc_priv_area->if_stats.multicast;
- */
- /* Pass it up the protocol stack */
-
- skb->dev = dev;
- skb->mac.raw = skb->data;
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
-
-rx_exit:
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->opp_flag = 0x00;
- card->u.c.rxmb = ++ rxbuf;
- if((void*)rxbuf > card->u.c.rxbuf_last){
- card->u.c.rxmb = card->u.c.rxbuf_base;
- }
-}
-
-/*============================================================================
- * Timer interrupt handler.
- * The timer interrupt is used for two purposes:
- * 1) Processing udp calls from 'cpipemon'.
- * 2) Reading board-level statistics for updating the proc file system.
- */
-void timer_intr(sdla_t *card)
-{
- struct net_device* dev;
- chdlc_private_area_t* chdlc_priv_area = NULL;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
-
- if ((dev = card->wandev.dev)==NULL){
- flags = card->u.c.flags;
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- return;
- }
-
- chdlc_priv_area = dev->priv;
-
- if (chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG) {
- if (!config_chdlc(card)){
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
- }
- }
-
- /* process a udp call if pending */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP) {
- process_udp_mgmt_pkt(card, dev,
- chdlc_priv_area);
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
- }
-
- /* read the communications statistics if required */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
- update_comms_stats(card, chdlc_priv_area);
- if(!(-- chdlc_priv_area->update_comms_stats)) {
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- /* only disable the timer interrupt if there are no udp or statistic */
- /* updates pending */
- if(!chdlc_priv_area->timer_int_enabled) {
- flags = card->u.c.flags;
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- }
-}
-
-/*------------------------------------------------------------------------------
- Miscellaneous Functions
- - set_chdlc_config() used to set configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_chdlc_config(sdla_t* card)
-{
- CHDLC_CONFIGURATION_STRUCT cfg;
-
- memset(&cfg, 0, sizeof(CHDLC_CONFIGURATION_STRUCT));
-
- if(card->wandev.clocking){
- cfg.baud_rate = card->wandev.bps;
- }
-
- cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
- INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
- cfg.modem_config_options = 0;
- cfg.modem_status_timer = 100;
-
- cfg.CHDLC_protocol_options = card->u.c.protocol_options;
-
- if (card->tty_opt){
- cfg.CHDLC_API_options = DISCARD_RX_ERROR_FRAMES;
- }
-
- cfg.percent_data_buffer_for_Tx = (card->u.c.receive_only) ? 0 : 50;
- cfg.CHDLC_statistics_options = (CHDLC_TX_DATA_BYTE_COUNT_STAT |
- CHDLC_RX_DATA_BYTE_COUNT_STAT);
-
- if (card->tty_opt){
- card->wandev.mtu = TTY_CHDLC_MAX_MTU;
- }
- cfg.max_CHDLC_data_field_length = card->wandev.mtu;
- cfg.transmit_keepalive_timer = card->u.c.kpalv_tx;
- cfg.receive_keepalive_timer = card->u.c.kpalv_rx;
- cfg.keepalive_error_tolerance = card->u.c.kpalv_err;
- cfg.SLARP_request_timer = card->u.c.slarp_timer;
-
- if (cfg.SLARP_request_timer) {
- cfg.IP_address = 0;
- cfg.IP_netmask = 0;
-
- }else if (card->wandev.dev){
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
-
- struct in_device *in_dev = dev->ip_ptr;
-
- if(in_dev != NULL) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- if (ifa != NULL ) {
- cfg.IP_address = ntohl(ifa->ifa_local);
- cfg.IP_netmask = ntohl(ifa->ifa_mask);
- chdlc_priv_area->IP_address = ntohl(ifa->ifa_local);
- chdlc_priv_area->IP_netmask = ntohl(ifa->ifa_mask);
- }
- }
-
- /* FIXME: We must re-think this message in next release
- if((cfg.IP_address & 0x000000FF) > 2) {
- printk(KERN_WARNING "\n");
- printk(KERN_WARNING " WARNING:%s configured with an\n",
- card->devname);
- printk(KERN_WARNING " invalid local IP address.\n");
- printk(KERN_WARNING " Slarp pragmatics will fail.\n");
- printk(KERN_WARNING " IP address should be of the\n");
- printk(KERN_WARNING " format A.B.C.1 or A.B.C.2.\n");
- }
- */
- }
-
- return chdlc_configure(card, &cfg);
-}
-
-
-/*-----------------------------------------------------------------------------
- set_asy_config() used to set asynchronous configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_asy_config(sdla_t* card)
-{
-
- ASY_CONFIGURATION_STRUCT cfg;
- CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
- int err;
-
- memset(&cfg, 0, sizeof(ASY_CONFIGURATION_STRUCT));
-
- if(card->wandev.clocking)
- cfg.baud_rate = card->wandev.bps;
-
- cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
- INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
- cfg.modem_config_options = 0;
- cfg.asy_API_options = card->u.c.api_options;
- cfg.asy_protocol_options = card->u.c.protocol_options;
- cfg.Tx_bits_per_char = card->u.c.tx_bits_per_char;
- cfg.Rx_bits_per_char = card->u.c.rx_bits_per_char;
- cfg.stop_bits = card->u.c.stop_bits;
- cfg.parity = card->u.c.parity;
- cfg.break_timer = card->u.c.break_timer;
- cfg.asy_Rx_inter_char_timer = card->u.c.inter_char_timer;
- cfg.asy_Rx_complete_length = card->u.c.rx_complete_length;
- cfg.XON_char = card->u.c.xon_char;
- cfg.XOFF_char = card->u.c.xoff_char;
- cfg.asy_statistics_options = (CHDLC_TX_DATA_BYTE_COUNT_STAT |
- CHDLC_RX_DATA_BYTE_COUNT_STAT);
-
- mailbox->buffer_length = sizeof(ASY_CONFIGURATION_STRUCT);
- memcpy(mailbox->data, &cfg, mailbox->buffer_length);
- mailbox->command = SET_ASY_CONFIGURATION;
- err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mailbox);
- return err;
-}
-
-/*============================================================================
- * Enable asynchronous communications.
- */
-
-static int asy_comm_enable (sdla_t* card)
-{
-
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = ENABLE_ASY_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK && card->wandev.dev)
- chdlc_error(card, err, mb);
-
- if (!err)
- card->u.c.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Process global exception condition
- */
-static int process_global_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
- int err;
-
- mbox->buffer_length = 0;
- mbox->command = READ_GLOBAL_EXCEPTION_CONDITION;
- err = sdla_exec(mbox) ? mbox->return_code : CMD_TIMEOUT;
-
- if(err != CMD_TIMEOUT ){
-
- switch(mbox->return_code) {
-
- case EXCEP_MODEM_STATUS_CHANGE:
-
- printk(KERN_INFO "%s: Modem status change\n",
- card->devname);
-
- switch(mbox->data[0] & (DCD_HIGH | CTS_HIGH)) {
- case (DCD_HIGH):
- printk(KERN_INFO "%s: DCD high, CTS low\n",card->devname);
- break;
- case (CTS_HIGH):
- printk(KERN_INFO "%s: DCD low, CTS high\n",card->devname);
- break;
- case ((DCD_HIGH | CTS_HIGH)):
- printk(KERN_INFO "%s: DCD high, CTS high\n",card->devname);
- break;
- default:
- printk(KERN_INFO "%s: DCD low, CTS low\n",card->devname);
- break;
- }
- break;
-
- case EXCEP_TRC_DISABLED:
- printk(KERN_INFO "%s: Line trace disabled\n",
- card->devname);
- break;
-
- case EXCEP_IRQ_TIMEOUT:
- printk(KERN_INFO "%s: IRQ timeout occurred\n",
- card->devname);
- break;
-
- case 0x17:
- if (card->tty_opt){
- if (card->tty && card->tty_open){
- printk(KERN_INFO
- "%s: Modem Hangup Exception: Hanging Up!\n",
- card->devname);
- tty_hangup(card->tty);
- }
- break;
- }
-
- /* If TTY is not used just drop throught */
-
- default:
- printk(KERN_INFO "%s: Global exception %x\n",
- card->devname, mbox->return_code);
- break;
- }
- }
- return 0;
-}
-
-
-/*============================================================================
- * Process chdlc exception condition
- */
-static int process_chdlc_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_EXCEPTION_CONDITION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if(err != CMD_TIMEOUT) {
-
- switch (err) {
-
- case EXCEP_LINK_ACTIVE:
- port_set_state(card, WAN_CONNECTED);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_LINK_INACTIVE_MODEM:
- port_set_state(card, WAN_DISCONNECTED);
- unconfigure_ip(card);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_LINK_INACTIVE_KPALV:
- port_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO "%s: Keepalive timer expired.\n",
- card->devname);
- unconfigure_ip(card);
- trigger_chdlc_poll(card->wandev.dev);
- break;
-
- case EXCEP_IP_ADDRESS_DISCOVERED:
- if (configure_ip(card))
- return -1;
- break;
-
- case EXCEP_LOOPBACK_CONDITION:
- printk(KERN_INFO "%s: Loopback Condition Detected.\n",
- card->devname);
- break;
-
- case NO_CHDLC_EXCEP_COND_TO_REPORT:
- printk(KERN_INFO "%s: No exceptions reported.\n",
- card->devname);
- break;
- }
-
- }
- return 0;
-}
-
-
-/*============================================================================
- * Configure IP from SLARP negotiation
- * This adds dynamic routes when SLARP has provided valid addresses
- */
-
-static int configure_ip (sdla_t* card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area;
- char err;
-
- if (!dev)
- return 0;
-
- chdlc_priv_area = dev->priv;
-
-
- /* set to discover */
- if(card->u.c.slarp_timer != 0x00) {
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_CONFIGURATION_STRUCT *cfg;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- return -1;
- }
-
- cfg = (CHDLC_CONFIGURATION_STRUCT *)mb->data;
- chdlc_priv_area->IP_address = cfg->IP_address;
- chdlc_priv_area->IP_netmask = cfg->IP_netmask;
-
- /* Set flag to add route */
- chdlc_priv_area->route_status = ADD_ROUTE;
-
- /* The idea here is to add the route in the poll routine.
- This way, we aren't in interrupt context when adding routes */
- trigger_chdlc_poll(dev);
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Un-Configure IP negotiated by SLARP
- * This removes dynamic routes when the link becomes inactive.
- */
-
-static int unconfigure_ip (sdla_t* card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area;
-
- if (!dev)
- return 0;
-
- chdlc_priv_area= dev->priv;
-
- if (chdlc_priv_area->route_status == ROUTE_ADDED) {
-
- /* Note: If this function is called, the
- * port state has been DISCONNECTED. This state
- * change will trigger a poll_disconnected
- * function, that will check for this condition.
- */
- chdlc_priv_area->route_status = REMOVE_ROUTE;
-
- }
- return 0;
-}
-
-/*============================================================================
- * Routine to add/remove routes
- * Called like a polling routine when Routes are flagged to be added/removed.
- */
-
-static void process_route (sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
- unsigned char port_num;
- chdlc_private_area_t *chdlc_priv_area = NULL;
- u32 local_IP_addr = 0;
- u32 remote_IP_addr = 0;
- u32 IP_netmask, IP_addr;
- int err = 0;
- struct in_device *in_dev;
- mm_segment_t fs;
- struct ifreq if_info;
- struct sockaddr_in *if_data1, *if_data2;
-
- chdlc_priv_area = dev->priv;
- port_num = card->u.c.comm_port;
-
- /* Bug Fix Mar 16 2000
- * AND the IP address to the Mask before checking
- * the last two bits. */
-
- if((chdlc_priv_area->route_status == ADD_ROUTE) &&
- ((chdlc_priv_area->IP_address & ~chdlc_priv_area->IP_netmask) > 2)) {
-
- printk(KERN_INFO "%s: Dynamic route failure.\n",card->devname);
-
- if(card->u.c.slarp_timer) {
- u32 addr_net = htonl(chdlc_priv_area->IP_address);
-
- printk(KERN_INFO "%s: Bad IP address %u.%u.%u.%u received\n",
- card->devname,
- NIPQUAD(addr_net));
- printk(KERN_INFO "%s: from remote station.\n",
- card->devname);
-
- }else{
- u32 addr_net = htonl(chdlc_priv_area->IP_address);
-
- printk(KERN_INFO "%s: Bad IP address %u.%u.%u.%u issued\n",
- card->devname,
- NIPQUAD(addr_net));
- printk(KERN_INFO "%s: to remote station. Local\n",
- card->devname);
- printk(KERN_INFO "%s: IP address must be A.B.C.1\n",
- card->devname);
- printk(KERN_INFO "%s: or A.B.C.2.\n",card->devname);
- }
-
- /* remove the route due to the IP address error condition */
- chdlc_priv_area->route_status = REMOVE_ROUTE;
- err = 1;
- }
-
- /* If we are removing a route with bad IP addressing, then use the */
- /* locally configured IP addresses */
- if((chdlc_priv_area->route_status == REMOVE_ROUTE) && err) {
-
- /* do not remove a bad route that has already been removed */
- if(chdlc_priv_area->route_removed) {
- return;
- }
-
- in_dev = dev->ip_ptr;
-
- if(in_dev != NULL) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
- if (ifa != NULL ) {
- local_IP_addr = ifa->ifa_local;
- IP_netmask = ifa->ifa_mask;
- }
- }
- }else{
- /* According to Cisco HDLC, if the point-to-point address is
- A.B.C.1, then we are the opposite (A.B.C.2), and vice-versa.
- */
- IP_netmask = ntohl(chdlc_priv_area->IP_netmask);
- remote_IP_addr = ntohl(chdlc_priv_area->IP_address);
-
-
- /* If Netmask is 255.255.255.255 the local address
- * calculation will fail. Default it back to 255.255.255.0 */
- if (IP_netmask == 0xffffffff)
- IP_netmask &= 0x00ffffff;
-
- /* Bug Fix Mar 16 2000
- * AND the Remote IP address with IP netmask, instead
- * of static netmask of 255.255.255.0 */
- local_IP_addr = (remote_IP_addr & IP_netmask) +
- (~remote_IP_addr & ntohl(0x0003));
-
- if(!card->u.c.slarp_timer) {
- IP_addr = local_IP_addr;
- local_IP_addr = remote_IP_addr;
- remote_IP_addr = IP_addr;
- }
- }
-
- fs = get_fs(); /* Save file system */
- set_fs(get_ds()); /* Get user space block */
-
- /* Setup a structure for adding/removing routes */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- switch (chdlc_priv_area->route_status) {
-
- case ADD_ROUTE:
-
- if(!card->u.c.slarp_timer) {
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = remote_IP_addr;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- } else {
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = local_IP_addr;
- if_data1->sin_family = AF_INET;
- if(!(err = devinet_ioctl(SIOCSIFADDR, &if_info))){
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = remote_IP_addr;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- }
- }
-
- if(err) {
- printk(KERN_INFO "%s: Add route %u.%u.%u.%u failed (%d)\n",
- card->devname, NIPQUAD(remote_IP_addr), err);
- } else {
- ((chdlc_private_area_t *)dev->priv)->route_status = ROUTE_ADDED;
- printk(KERN_INFO "%s: Dynamic route added.\n",
- card->devname);
- printk(KERN_INFO "%s: Local IP addr : %u.%u.%u.%u\n",
- card->devname, NIPQUAD(local_IP_addr));
- printk(KERN_INFO "%s: Remote IP addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(remote_IP_addr));
- chdlc_priv_area->route_removed = 0;
- }
- break;
-
-
- case REMOVE_ROUTE:
-
- /* Change the local ip address of the interface to 0.
- * This will also delete the destination route.
- */
- if(!card->u.c.slarp_timer) {
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = 0;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFDSTADDR, &if_info);
- } else {
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = 0;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl(SIOCSIFADDR,&if_info);
-
- }
- if(err) {
- printk(KERN_INFO
- "%s: Remove route %u.%u.%u.%u failed, (err %d)\n",
- card->devname, NIPQUAD(remote_IP_addr),
- err);
- } else {
- ((chdlc_private_area_t *)dev->priv)->route_status =
- NO_ROUTE;
- printk(KERN_INFO "%s: Dynamic route removed: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(local_IP_addr));
- chdlc_priv_area->route_removed = 1;
- }
- break;
- }
-
- set_fs(fs); /* Restore file system */
-
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area)
-{
- int udp_pkt_stored = 0;
-
- if(!chdlc_priv_area->udp_pkt_lgth &&
- (skb->len <= MAX_LGTH_UDP_MGNT_PKT)) {
- chdlc_priv_area->udp_pkt_lgth = skb->len;
- chdlc_priv_area->udp_pkt_src = udp_pkt_src;
- memcpy(chdlc_priv_area->udp_pkt_data, skb->data, skb->len);
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UDP;
- udp_pkt_stored = 1;
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-/*=============================================================================
- * Process UDP management packet.
- */
-
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area )
-{
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short buffer_length, real_len;
- unsigned long data_ptr;
- unsigned data_length;
- int udp_mgmt_req_valid = 1;
- CHDLC_MAILBOX_STRUCT *mb = card->mbox;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- chdlc_udp_pkt_t *chdlc_udp_pkt;
- struct timeval tv;
- int err;
- char ut_char;
-
- chdlc_udp_pkt = (chdlc_udp_pkt_t *) chdlc_priv_area->udp_pkt_data;
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
-
- /* Only these commands are support for remote debugging.
- * All others are not */
- switch(chdlc_udp_pkt->cblock.command) {
-
- case READ_GLOBAL_STATISTICS:
- case READ_MODEM_STATUS:
- case READ_CHDLC_LINK_STATUS:
- case CPIPE_ROUTER_UP_TIME:
- case READ_COMMS_ERROR_STATS:
- case READ_CHDLC_OPERATIONAL_STATS:
-
- /* These two commands are executed for
- * each request */
- case READ_CHDLC_CONFIGURATION:
- case READ_CHDLC_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
-
- /* set length to 0 */
- chdlc_udp_pkt->cblock.buffer_length = 0;
-
- /* set return code */
- chdlc_udp_pkt->cblock.return_code = 0xCD;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,chdlc_udp_pkt->cblock.command);
- }
-
- } else {
- unsigned long trace_status_cfg_addr = 0;
- TRACE_STATUS_EL_CFG_STRUCT trace_cfg_struct;
- TRACE_STATUS_ELEMENT_STRUCT trace_element_struct;
-
- switch(chdlc_udp_pkt->cblock.command) {
-
- case CPIPE_ENABLE_TRACING:
- if (!chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
-
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_ACTIVE;
- /* Trace delay mode is not used because it slows
- down transfer and results in a standoff situation
- when there is a lot of data */
-
- /* Configure the Trace based on user inputs */
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->trace_config |=
- chdlc_udp_pkt->data[0];
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_deactivation_timer = 4000;
-
-
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- card->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- /* Get the base address of the trace element list */
- mb->buffer_length = 0;
- mb->command = READ_TRACE_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- trace_status_cfg_addr =((LINE_TRACE_CONFIG_STRUCT *)
- mb->data) -> ptr_trace_stat_el_cfg_struct;
-
- sdla_peek(&card->hw, trace_status_cfg_addr,
- &trace_cfg_struct, sizeof(trace_cfg_struct));
-
- chdlc_priv_area->start_trace_addr = trace_cfg_struct.
- base_addr_trace_status_elements;
-
- chdlc_priv_area->number_trace_elements =
- trace_cfg_struct.number_trace_status_elements;
-
- chdlc_priv_area->end_trace_addr = (unsigned long)
- ((TRACE_STATUS_ELEMENT_STRUCT *)
- chdlc_priv_area->start_trace_addr +
- (chdlc_priv_area->number_trace_elements - 1));
-
- chdlc_priv_area->base_addr_trace_buffer =
- trace_cfg_struct.base_addr_trace_buffer;
-
- chdlc_priv_area->end_addr_trace_buffer =
- trace_cfg_struct.end_addr_trace_buffer;
-
- chdlc_priv_area->curr_trace_addr =
- trace_cfg_struct.next_trace_element_to_use;
-
- chdlc_priv_area->available_buffer_space = 2000 -
- sizeof(ip_pkt_t) -
- sizeof(udp_pkt_t) -
- sizeof(wp_mgmt_t) -
- sizeof(cblock_t) -
- sizeof(trace_info_t);
- }
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- chdlc_priv_area->TracingEnabled = 1;
- break;
-
-
- case CPIPE_DISABLE_TRACING:
- if (chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_INACTIVE;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- }
-
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- break;
-
-
- case CPIPE_GET_TRACE_INFO:
-
- if (!chdlc_priv_area->TracingEnabled) {
- chdlc_udp_pkt->cblock.return_code = 1;
- mb->buffer_length = 0;
- break;
- }
-
- chdlc_udp_pkt->trace_info.ismoredata = 0x00;
- buffer_length = 0; /* offset of packet already occupied */
-
- for (frames=0; frames < chdlc_priv_area->number_trace_elements; frames++){
-
- trace_pkt_t *trace_pkt = (trace_pkt_t *)
- &chdlc_udp_pkt->data[buffer_length];
-
- sdla_peek(&card->hw, chdlc_priv_area->curr_trace_addr,
- (unsigned char *)&trace_element_struct,
- sizeof(TRACE_STATUS_ELEMENT_STRUCT));
-
- if (trace_element_struct.opp_flag == 0x00) {
- break;
- }
-
- /* get pointer to real data */
- data_ptr = trace_element_struct.ptr_data_bfr;
-
- /* See if there is actual data on the trace buffer */
- if (data_ptr){
- data_length = trace_element_struct.trace_length;
- }else{
- data_length = 0;
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
-
- if( (chdlc_priv_area->available_buffer_space - buffer_length)
- < ( sizeof(trace_pkt_t) + data_length) ) {
-
- /* indicate there are more frames on board & exit */
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- break;
- }
-
- trace_pkt->status = trace_element_struct.trace_type;
-
- trace_pkt->time_stamp =
- trace_element_struct.trace_time_stamp;
-
- trace_pkt->real_length =
- trace_element_struct.trace_length;
-
- /* see if we can fit the frame into the user buffer */
- real_len = trace_pkt->real_length;
-
- if (data_ptr == 0) {
- trace_pkt->data_avail = 0x00;
- } else {
- unsigned tmp = 0;
-
- /* get the data from circular buffer
- must check for end of buffer */
- trace_pkt->data_avail = 0x01;
-
- if ((data_ptr + real_len) >
- chdlc_priv_area->end_addr_trace_buffer + 1){
-
- tmp = chdlc_priv_area->end_addr_trace_buffer - data_ptr + 1;
- sdla_peek(&card->hw, data_ptr,
- trace_pkt->data,tmp);
- data_ptr = chdlc_priv_area->base_addr_trace_buffer;
- }
-
- sdla_peek(&card->hw, data_ptr,
- &trace_pkt->data[tmp], real_len - tmp);
- }
-
- /* zero the opp flag to show we got the frame */
- ut_char = 0x00;
- sdla_poke(&card->hw, chdlc_priv_area->curr_trace_addr, &ut_char, 1);
-
- /* now move onto the next frame */
- chdlc_priv_area->curr_trace_addr += sizeof(TRACE_STATUS_ELEMENT_STRUCT);
-
- /* check if we went over the last address */
- if ( chdlc_priv_area->curr_trace_addr > chdlc_priv_area->end_trace_addr ) {
- chdlc_priv_area->curr_trace_addr = chdlc_priv_area->start_trace_addr;
- }
-
- if(trace_pkt->data_avail == 0x01) {
- buffer_length += real_len - 1;
- }
-
- /* for the header */
- buffer_length += sizeof(trace_pkt_t);
-
- } /* For Loop */
-
- if (frames == chdlc_priv_area->number_trace_elements){
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
- chdlc_udp_pkt->trace_info.num_frames = frames;
-
- mb->buffer_length = buffer_length;
- chdlc_udp_pkt->cblock.buffer_length = buffer_length;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-
- break;
-
-
- case CPIPE_FT1_READ_STATUS:
- ((unsigned char *)chdlc_udp_pkt->data )[0] =
- flags->FT1_info_struct.parallel_port_A_input;
-
- ((unsigned char *)chdlc_udp_pkt->data )[1] =
- flags->FT1_info_struct.parallel_port_B_input;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- chdlc_udp_pkt->cblock.buffer_length = 2;
- mb->buffer_length = 2;
- break;
-
- case CPIPE_ROUTER_UP_TIME:
- do_gettimeofday( &tv );
- chdlc_priv_area->router_up_time = tv.tv_sec -
- chdlc_priv_area->router_start_time;
- *(unsigned long *)&chdlc_udp_pkt->data =
- chdlc_priv_area->router_up_time;
- mb->buffer_length = sizeof(unsigned long);
- chdlc_udp_pkt->cblock.buffer_length = sizeof(unsigned long);
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- break;
-
- case FT1_MONITOR_STATUS_CTRL:
- /* Enable FT1 MONITOR STATUS */
- if ((chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_STATUS) ||
- (chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_OP_STATS)) {
-
- if( rCount++ != 0 ) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if( chdlc_udp_pkt->data[0] == 0) {
-
- if( --rCount != 0) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
- goto dflt_1;
-
- default:
-dflt_1:
- /* it's a board command */
- mb->command = chdlc_udp_pkt->cblock.command;
- mb->buffer_length = chdlc_udp_pkt->cblock.buffer_length;
- if (mb->buffer_length) {
- memcpy(&mb->data, (unsigned char *) chdlc_udp_pkt->
- data, mb->buffer_length);
- }
- /* run the command on the board */
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- break;
- }
-
- /* copy the result back to our buffer */
- memcpy(&chdlc_udp_pkt->cblock, mb, sizeof(cblock_t));
-
- if (mb->buffer_length) {
- memcpy(&chdlc_udp_pkt->data, &mb->data,
- mb->buffer_length);
- }
-
- } /* end of switch */
- } /* end of else */
-
- /* Fill UDP TTL */
- chdlc_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
-
- len = reply_udp(chdlc_priv_area->udp_pkt_data, mb->buffer_length);
-
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK){
-
- /* Must check if we interrupted if_send() routine. The
- * tx buffers might be used. If so drop the packet */
- if (!test_bit(SEND_CRIT,&card->wandev.critical)) {
-
- if(!chdlc_send(card, chdlc_priv_area->udp_pkt_data, len)) {
- ++ card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += len;
- }
- }
- } else {
-
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, len);
- memcpy(buf, chdlc_priv_area->udp_pkt_data, len);
-
- /* Decapsulate pkt and pass it up the protocol stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
-
- netif_rx(new_skb);
- dev->last_rx = jiffies;
- } else {
-
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- }
-
- chdlc_priv_area->udp_pkt_lgth = 0;
-
- return 0;
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-
-static void init_chdlc_tx_rx_buff( sdla_t* card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_TX_STATUS_EL_CFG_STRUCT *tx_config;
- CHDLC_RX_STATUS_EL_CFG_STRUCT *rx_config;
- char err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- if (card->wandev.dev){
- chdlc_error(card,err,mb);
- }
- return;
- }
-
- if(card->hw.type == SDLA_S514) {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct));
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- tx_config->base_addr_Tx_status_elements);
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)
- card->u.c.txbuf_base +
- (tx_config->number_Tx_status_elements - 1);
-
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- rx_config->base_addr_Rx_status_elements);
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)
- card->u.c.rxbuf_base +
- (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- tx_config->next_Tx_status_element_to_use);
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- rx_config->next_Rx_status_element_to_use);
- }
- else {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- (tx_config->base_addr_Tx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)card->u.c.txbuf_base
- + (tx_config->number_Tx_status_elements - 1);
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- (rx_config->base_addr_Rx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)card->u.c.rxbuf_base
- + (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- (tx_config->next_Tx_status_element_to_use % SDLA_WINDOWSIZE));
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- (rx_config->next_Rx_status_element_to_use % SDLA_WINDOWSIZE));
- }
-
- /* Setup Actual Buffer Start and end addresses */
- card->u.c.rx_base = rx_config->base_addr_Rx_buffer;
- card->u.c.rx_top = rx_config->end_addr_Rx_buffer;
-
-}
-
-/*=============================================================================
- * Perform Interrupt Test by running READ_CHDLC_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err,i;
-
- Intr_test_counter = 0;
-
- err = chdlc_set_intr_mode(card, APP_INT_ON_COMMAND_COMPLETE);
-
- if (err == CMD_OK) {
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != CMD_OK)
- chdlc_error(card, err, mb);
- }
- }
- else {
- return err;
- }
-
- err = chdlc_set_intr_mode(card, 0);
-
- if (err != CMD_OK)
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. CPIPEAB ?
- */
-static int udp_pkt_type(struct sk_buff *skb, sdla_t* card)
-{
- chdlc_udp_pkt_t *chdlc_udp_pkt = (chdlc_udp_pkt_t *)skb->data;
-
-#ifdef _WAN_UDP_DEBUG
- printk(KERN_INFO "SIG %s = %s\n\
- UPP %x = %x\n\
- PRT %x = %x\n\
- REQ %i = %i\n\
- 36 th = %x 37th = %x\n",
- chdlc_udp_pkt->wp_mgmt.signature,
- UDPMGMT_SIGNATURE,
- chdlc_udp_pkt->udp_pkt.udp_dst_port,
- ntohs(card->wandev.udp_port),
- chdlc_udp_pkt->ip_pkt.protocol,
- UDPMGMT_UDP_PROTOCOL,
- chdlc_udp_pkt->wp_mgmt.request_reply,
- UDPMGMT_REQUEST,
- skb->data[36], skb->data[37]);
-#endif
-
- if (!strncmp(chdlc_udp_pkt->wp_mgmt.signature,UDPMGMT_SIGNATURE,8) &&
- (chdlc_udp_pkt->udp_pkt.udp_dst_port == ntohs(card->wandev.udp_port)) &&
- (chdlc_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (chdlc_udp_pkt->wp_mgmt.request_reply == UDPMGMT_REQUEST)) {
-
- return UDP_CPIPE_TYPE;
-
- }else{
- return UDP_INVALID_TYPE;
- }
-}
-
-/*============================================================================
- * Set PORT state.
- */
-static void port_set_state (sdla_t *card, int state)
-{
- if (card->u.c.state != state)
- {
- switch (state)
- {
- case WAN_CONNECTED:
- printk (KERN_INFO "%s: Link connected!\n",
- card->devname);
- break;
-
- case WAN_CONNECTING:
- printk (KERN_INFO "%s: Link connecting...\n",
- card->devname);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO "%s: Link disconnected!\n",
- card->devname);
- break;
- }
-
- card->wandev.state = card->u.c.state = state;
- if (card->wandev.dev){
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- chdlc_priv_area->common.state = state;
- }
- }
-}
-
-/*===========================================================================
- * config_chdlc
- *
- * Configure the chdlc protocol and enable communications.
- *
- * The if_open() function binds this function to the poll routine.
- * Therefore, this function will run every time the chdlc interface
- * is brought up. We cannot run this function from the if_open
- * because if_open does not have access to the remote IP address.
- *
- * If the communications are not enabled, proceed to configure
- * the card and enable communications.
- *
- * If the communications are enabled, it means that the interface
- * was shutdown by ether the user or driver. In this case, we
- * have to check that the IP addresses have not changed. If
- * the IP addresses have changed, we have to reconfigure the firmware
- * and update the changed IP addresses. Otherwise, just exit.
- *
- */
-
-static int config_chdlc (sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- if (card->u.c.comm_enabled){
-
- /* Jun 20. 2000: NC
- * IP addresses are not used in the API mode */
-
- if ((chdlc_priv_area->ip_local_tmp != chdlc_priv_area->ip_local ||
- chdlc_priv_area->ip_remote_tmp != chdlc_priv_area->ip_remote) &&
- card->u.c.usedby == WANPIPE) {
-
- /* The IP addersses have changed, we must
- * stop the communications and reconfigure
- * the card. Reason: the firmware must know
- * the local and remote IP addresses. */
- disable_comm(card);
- port_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO
- "%s: IP addresses changed!\n",
- card->devname);
- printk(KERN_INFO
- "%s: Restarting communications ...\n",
- card->devname);
- }else{
- /* IP addresses are the same and the link is up,
- * we don't have to do anything here. Therefore, exit */
- return 0;
- }
- }
-
- chdlc_priv_area->ip_local = chdlc_priv_area->ip_local_tmp;
- chdlc_priv_area->ip_remote = chdlc_priv_area->ip_remote_tmp;
-
-
- /* Setup the Board for asynchronous mode */
- if (card->u.c.async_mode){
-
- if (set_asy_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC Async configuration!\n",
- card->devname);
- return 0;
- }
- }else{
- /* Setup the Board for CHDLC */
- if (set_chdlc_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC configuration!\n",
- card->devname);
- return 0;
- }
- }
-
- /* Set interrupt mode and mask */
- if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
- APP_INT_ON_GLOBAL_EXCEP_COND |
- APP_INT_ON_TX_FRAME |
- APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return 0;
- }
-
-
- /* Mask the Transmit and Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
- /* In TTY mode, receive interrupt will be enabled during
- * wanpipe_tty_open() operation */
- if (card->tty_opt){
- flags->interrupt_info_struct.interrupt_permission &= ~APP_INT_ON_RX_FRAME;
- }
-
- /* Enable communications */
- if (card->u.c.async_mode){
- if (asy_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable async commnunication!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return 0;
- }
- }else{
- if (chdlc_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return 0;
- }
- }
-
- /* Initialize Rx/Tx buffer control fields */
- init_chdlc_tx_rx_buff(card);
- port_set_state(card, WAN_CONNECTING);
- return 0;
-}
-
-
-/*============================================================
- * chdlc_poll
- *
- * Rationale:
- * We cannot manipulate the routing tables, or
- * ip addresses withing the interrupt. Therefore
- * we must perform such actons outside an interrupt
- * at a later time.
- *
- * Description:
- * CHDLC polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each CHDLC
- * interface through a tq_schedule bottom half.
- *
- * trigger_chdlc_poll() function is used to kick
- * the chldc_poll routine.
- */
-
-static void chdlc_poll(struct net_device *dev)
-{
- chdlc_private_area_t *chdlc_priv_area;
- sdla_t *card;
- u8 check_gateway=0;
- SHARED_MEMORY_INFO_STRUCT* flags;
-
-
- if (!dev || (chdlc_priv_area=dev->priv) == NULL)
- return;
-
- card = chdlc_priv_area->card;
- flags = card->u.c.flags;
-
- /* (Re)Configuraiton is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* if_open() function has triggered the polling routine
- * to determine the configured IP addresses. Once the
- * addresses are found, trigger the chdlc configuration */
- if (test_bit(0,&chdlc_priv_area->config_chdlc)){
-
- chdlc_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP);
- chdlc_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- /* Jun 20. 2000 Bug Fix
- * Only perform this check in WANPIPE mode, since
- * IP addresses are not used in the API mode. */
-
- if (chdlc_priv_area->ip_local_tmp == chdlc_priv_area->ip_remote_tmp &&
- card->u.c.slarp_timer == 0x00 &&
- !card->u.c.backup &&
- card->u.c.usedby == WANPIPE){
-
- if (++chdlc_priv_area->ip_error > MAX_IP_ERRORS){
- printk(KERN_INFO "\n%s: --- WARNING ---\n",
- card->devname);
- printk(KERN_INFO
- "%s: The local IP address is the same as the\n",
- card->devname);
- printk(KERN_INFO
- "%s: Point-to-Point IP address.\n",
- card->devname);
- printk(KERN_INFO "%s: --- WARNING ---\n\n",
- card->devname);
- }else{
- clear_bit(POLL_CRIT,&card->wandev.critical);
- chdlc_priv_area->poll_delay_timer.expires = jiffies+HZ;
- add_timer(&chdlc_priv_area->poll_delay_timer);
- return;
- }
- }
-
- clear_bit(0,&chdlc_priv_area->config_chdlc);
- clear_bit(POLL_CRIT,&card->wandev.critical);
-
- chdlc_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- return;
- }
- /* Dynamic interface implementation, as well as dynamic
- * routing. */
-
- switch (card->u.c.state){
-
- case WAN_DISCONNECTED:
-
- /* If the dynamic interface configuration is on, and interface
- * is up, then bring down the netowrk interface */
-
- if (test_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down) &&
- !test_bit(DEV_DOWN, &chdlc_priv_area->interface_down) &&
- card->wandev.dev->flags & IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s down.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags&~IFF_UP));
- set_bit(DEV_DOWN,&chdlc_priv_area->interface_down);
- chdlc_priv_area->route_status = NO_ROUTE;
-
- }else{
- /* We need to check if the local IP address is
- * zero. If it is, we shouldn't try to remove it.
- */
-
- if (card->wandev.dev->flags & IFF_UP &&
- get_ip_address(card->wandev.dev,WAN_LOCAL_IP) &&
- chdlc_priv_area->route_status != NO_ROUTE &&
- card->u.c.slarp_timer){
-
- process_route(card);
- }
- }
- break;
-
- case WAN_CONNECTED:
-
- /* In SMP machine this code can execute before the interface
- * comes up. In this case, we must make sure that we do not
- * try to bring up the interface before dev_open() is finished */
-
-
- /* DEV_DOWN will be set only when we bring down the interface
- * for the very first time. This way we know that it was us
- * that brought the interface down */
-
- if (test_bit(DYN_OPT_ON,&chdlc_priv_area->interface_down) &&
- test_bit(DEV_DOWN, &chdlc_priv_area->interface_down) &&
- !(card->wandev.dev->flags & IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s up.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP));
- clear_bit(DEV_DOWN,&chdlc_priv_area->interface_down);
- check_gateway=1;
- }
-
- if (chdlc_priv_area->route_status == ADD_ROUTE &&
- card->u.c.slarp_timer){
-
- process_route(card);
- check_gateway=1;
- }
-
- if (chdlc_priv_area->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
- }
-
- clear_bit(POLL_CRIT,&card->wandev.critical);
-}
-
-/*============================================================
- * trigger_chdlc_poll
- *
- * Description:
- * Add a chdlc_poll() work entry into the keventd work queue
- * for a specific dlci/interface. This will kick
- * the fr_poll() routine at a later time.
- *
- * Usage:
- * Interrupts use this to defer a taks to
- * a polling routine.
- *
- */
-static void trigger_chdlc_poll(struct net_device *dev)
-{
- chdlc_private_area_t *chdlc_priv_area;
- sdla_t *card;
-
- if (!dev)
- return;
-
- if ((chdlc_priv_area = dev->priv)==NULL)
- return;
-
- card = chdlc_priv_area->card;
-
- if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
- return;
- }
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
- schedule_work(&chdlc_priv_area->poll_work);
-}
-
-
-static void chdlc_poll_delay (unsigned long dev_ptr)
-{
- struct net_device *dev = (struct net_device *)dev_ptr;
- trigger_chdlc_poll(dev);
-}
-
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
- if (card->next){
- spin_lock(&card->next->wandev.lock);
- }
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
- if (card->next){
- spin_unlock(&card->next->wandev.lock);
- }
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-//*********** TTY SECTION ****************
-
-static void wanpipe_tty_trigger_tx_irq(sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
- chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
-}
-
-static void wanpipe_tty_trigger_poll(sdla_t *card)
-{
- schedule_work(&card->tty_work);
-}
-
-static void tty_poll_work (void* data)
-{
- sdla_t *card = (sdla_t*)data;
- struct tty_struct *tty;
-
- if ((tty=card->tty)==NULL)
- return;
-
- tty_wakeup(tty);
-#if defined(SERIAL_HAVE_POLL_WAIT)
- wake_up_interruptible(&tty->poll_wait);
-#endif
- return;
-}
-
-static void wanpipe_tty_close(struct tty_struct *tty, struct file * filp)
-{
- sdla_t *card;
- unsigned long smp_flags;
-
- if (!tty || !tty->driver_data){
- return;
- }
-
- card = (sdla_t*)tty->driver_data;
-
- if (!card)
- return;
-
- printk(KERN_INFO "%s: Closing TTY Driver!\n",
- card->devname);
-
- /* Sanity Check */
- if (!card->tty_open)
- return;
-
- wanpipe_close(card);
- if (--card->tty_open == 0){
-
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=NULL;
- chdlc_disable_comm_shutdown(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
-
- kfree(card->tty_buf);
- card->tty_buf = NULL;
- kfree(card->tty_rx);
- card->tty_rx = NULL;
- }
- return;
-}
-static int wanpipe_tty_open(struct tty_struct *tty, struct file * filp)
-{
- unsigned long smp_flags;
- sdla_t *card;
-
- if (!tty){
- return -ENODEV;
- }
-
- if (!tty->driver_data){
- int port;
- port = tty->index;
- if ((port < 0) || (port >= NR_PORTS))
- return -ENODEV;
-
- tty->driver_data = WAN_CARD(port);
- if (!tty->driver_data)
- return -ENODEV;
- }
-
- card = (sdla_t*)tty->driver_data;
-
- if (!card){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=NULL;
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- return -ENODEV;
- }
-
- printk(KERN_INFO "%s: Opening TTY Driver!\n",
- card->devname);
-
- if (card->tty_open == 0){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- card->tty=tty;
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
-
- if (!card->tty_buf){
- card->tty_buf = kmalloc(TTY_CHDLC_MAX_MTU, GFP_KERNEL);
- if (!card->tty_buf){
- card->tty_buf=NULL;
- card->tty=NULL;
- return -ENOMEM;
- }
- }
-
- if (!card->tty_rx){
- card->tty_rx = kmalloc(TTY_CHDLC_MAX_MTU, GFP_KERNEL);
- if (!card->tty_rx){
- /* Free the buffer above */
- kfree(card->tty_buf);
- card->tty_buf=NULL;
- card->tty=NULL;
- return -ENOMEM;
- }
- }
- }
-
- ++card->tty_open;
- wanpipe_open(card);
- return 0;
-}
-
-static int wanpipe_tty_write(struct tty_struct * tty, const unsigned char *buf, int count)
-{
- unsigned long smp_flags=0;
- sdla_t *card=NULL;
-
- if (!tty){
- dbg_printk(KERN_INFO "NO TTY in Write\n");
- return -ENODEV;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card){
- dbg_printk(KERN_INFO "No Card in TTY Write\n");
- return -ENODEV;
- }
-
- if (count > card->wandev.mtu){
- dbg_printk(KERN_INFO "Frame too big in Write %i Max: %i\n",
- count,card->wandev.mtu);
- return -EINVAL;
- }
-
- if (card->wandev.state != WAN_CONNECTED){
- dbg_printk(KERN_INFO "Card not connected in TTY Write\n");
- return -EINVAL;
- }
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if (test_and_set_bit(SEND_CRIT,(void*)&card->wandev.critical)){
- printk(KERN_INFO "%s: Critical in TTY Write\n",
- card->devname);
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return -EINVAL;
- }
-
- if (chdlc_send(card,(void*)buf,count)){
- dbg_printk(KERN_INFO "%s: Failed to send, retry later: kernel!\n",
- card->devname);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- wanpipe_tty_trigger_tx_irq(card);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
- return 0;
- }
- dbg_printk(KERN_INFO "%s: Packet sent OK: %i\n",card->devname,count);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return count;
-}
-
-static void wanpipe_tty_receive(sdla_t *card, unsigned addr, unsigned int len)
-{
- unsigned offset=0;
- unsigned olen=len;
- char fp=0;
- struct tty_struct *tty;
- int i;
- struct tty_ldisc *ld;
-
- if (!card->tty_open){
- dbg_printk(KERN_INFO "%s: TTY not open during receive\n",
- card->devname);
- return;
- }
-
- if ((tty=card->tty) == NULL){
- dbg_printk(KERN_INFO "%s: No TTY on receive\n",
- card->devname);
- return;
- }
-
- if (!tty->driver_data){
- dbg_printk(KERN_INFO "%s: No Driver Data, or Flip on receive\n",
- card->devname);
- return;
- }
-
-
- if (card->u.c.async_mode){
- if ((tty->flip.count+len) >= TTY_FLIPBUF_SIZE){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Received packet size too big: %i bytes, Max: %i!\n",
- card->devname,len,TTY_FLIPBUF_SIZE);
- }
- return;
- }
-
-
- if((addr + len) > card->u.c.rx_top + 1) {
- offset = card->u.c.rx_top - addr + 1;
-
- sdla_peek(&card->hw, addr, tty->flip.char_buf_ptr, offset);
-
- addr = card->u.c.rx_base;
- len -= offset;
-
- tty->flip.char_buf_ptr+=offset;
- tty->flip.count+=offset;
- for (i=0;i<offset;i++){
- *tty->flip.flag_buf_ptr = 0;
- tty->flip.flag_buf_ptr++;
- }
- }
-
- sdla_peek(&card->hw, addr, tty->flip.char_buf_ptr, len);
-
- tty->flip.char_buf_ptr+=len;
- card->tty->flip.count+=len;
- for (i=0;i<len;i++){
- *tty->flip.flag_buf_ptr = 0;
- tty->flip.flag_buf_ptr++;
- }
-
- tty->low_latency=1;
- tty_flip_buffer_push(tty);
- }else{
- if (!card->tty_rx){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Receive sync buffer not available!\n",
- card->devname);
- }
- return;
- }
-
- if (len > TTY_CHDLC_MAX_MTU){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Received packet size too big: %i bytes, Max: %i!\n",
- card->devname,len,TTY_FLIPBUF_SIZE);
- }
- return;
- }
-
-
- if((addr + len) > card->u.c.rx_top + 1) {
- offset = card->u.c.rx_top - addr + 1;
-
- sdla_peek(&card->hw, addr, card->tty_rx, offset);
-
- addr = card->u.c.rx_base;
- len -= offset;
- }
- sdla_peek(&card->hw, addr, card->tty_rx+offset, len);
- ld = tty_ldisc_ref(tty);
- if (ld) {
- if (ld->receive_buf)
- ld->receive_buf(tty,card->tty_rx,&fp,olen);
- tty_ldisc_deref(ld);
- }else{
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: NO TTY Sync line discipline!\n",
- card->devname);
- }
- }
- }
-
- dbg_printk(KERN_INFO "%s: Received Data %i\n",card->devname,olen);
- return;
-}
-
-#if 0
-static int wanpipe_tty_ioctl(struct tty_struct *tty, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- return -ENOIOCTLCMD;
-}
-#endif
-
-static void wanpipe_tty_stop(struct tty_struct *tty)
-{
- return;
-}
-
-static void wanpipe_tty_start(struct tty_struct *tty)
-{
- return;
-}
-
-static int config_tty (sdla_t *card)
-{
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- /* Setup the Board for asynchronous mode */
- if (card->u.c.async_mode){
-
- if (set_asy_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC Async configuration!\n",
- card->devname);
- return -EINVAL;
- }
- }else{
- /* Setup the Board for CHDLC */
- if (set_chdlc_config(card)) {
- printk (KERN_INFO "%s: Failed CHDLC configuration!\n",
- card->devname);
- return -EINVAL;
- }
- }
-
- /* Set interrupt mode and mask */
- if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
- APP_INT_ON_GLOBAL_EXCEP_COND |
- APP_INT_ON_TX_FRAME |
- APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return -EINVAL;
- }
-
-
- /* Mask the Transmit and Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
-
- /* Enable communications */
- if (card->u.c.async_mode){
- if (asy_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable async commnunication!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return -EINVAL;
- }
- }else{
- if (chdlc_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return -EINVAL;
- }
- }
-
- /* Initialize Rx/Tx buffer control fields */
- init_chdlc_tx_rx_buff(card);
- port_set_state(card, WAN_CONNECTING);
- return 0;
-}
-
-
-static int change_speed(sdla_t *card, struct tty_struct *tty,
- struct termios *old_termios)
-{
- int baud, ret=0;
- unsigned cflag;
- int dbits,sbits,parity,handshaking;
-
- cflag = tty->termios->c_cflag;
-
- /* There is always one stop bit */
- sbits=WANOPT_ONE;
-
- /* Parity is defaulted to NONE */
- parity = WANOPT_NONE;
-
- handshaking=0;
-
- /* byte size and parity */
- switch (cflag & CSIZE) {
- case CS5: dbits = 5; break;
- case CS6: dbits = 6; break;
- case CS7: dbits = 7; break;
- case CS8: dbits = 8; break;
- /* Never happens, but GCC is too dumb to figure it out */
- default: dbits = 8; break;
- }
-
- /* One more stop bit should be supported, thus increment
- * the number of stop bits Max=2 */
- if (cflag & CSTOPB) {
- sbits = WANOPT_TWO;
- }
- if (cflag & PARENB) {
- parity = WANOPT_EVEN;
- }
- if (cflag & PARODD){
- parity = WANOPT_ODD;
- }
-
- /* Determine divisor based on baud rate */
- baud = tty_get_baud_rate(tty);
-
- if (!baud)
- baud = 9600; /* B0 transition handled in rs_set_termios */
-
- if (cflag & CRTSCTS) {
- handshaking|=ASY_RTS_HS_FOR_RX;
- }
-
- if (I_IGNPAR(tty))
- parity = WANOPT_NONE;
-
- if (I_IXOFF(tty)){
- handshaking|=ASY_XON_XOFF_HS_FOR_RX;
- handshaking|=ASY_XON_XOFF_HS_FOR_TX;
- }
-
- if (I_IXON(tty)){
- handshaking|=ASY_XON_XOFF_HS_FOR_RX;
- handshaking|=ASY_XON_XOFF_HS_FOR_TX;
- }
-
- if (card->u.c.async_mode){
- if (card->wandev.bps != baud)
- ret=1;
- card->wandev.bps = baud;
- }
-
- if (card->u.c.async_mode){
- if (card->u.c.protocol_options != handshaking)
- ret=1;
- card->u.c.protocol_options = handshaking;
-
- if (card->u.c.tx_bits_per_char != dbits)
- ret=1;
- card->u.c.tx_bits_per_char = dbits;
-
- if (card->u.c.rx_bits_per_char != dbits)
- ret=1;
- card->u.c.rx_bits_per_char = dbits;
-
- if (card->u.c.stop_bits != sbits)
- ret=1;
- card->u.c.stop_bits = sbits;
-
- if (card->u.c.parity != parity)
- ret=1;
- card->u.c.parity = parity;
-
- card->u.c.break_timer = 50;
- card->u.c.inter_char_timer = 10;
- card->u.c.rx_complete_length = 100;
- card->u.c.xon_char = 0xFE;
- }else{
- card->u.c.protocol_options = HDLC_STREAMING_MODE;
- }
-
- return ret;
-}
-
-
-static void wanpipe_tty_set_termios(struct tty_struct *tty, struct termios *old_termios)
-{
- sdla_t *card;
- int err=1;
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card)
- return;
-
- if (change_speed(card, tty, old_termios) || !card->u.c.comm_enabled){
- unsigned long smp_flags;
-
- if (card->u.c.comm_enabled){
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- chdlc_disable_comm_shutdown(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- }
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- err = config_tty(card);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- if (card->u.c.async_mode){
- printk(KERN_INFO "%s: TTY Async Configuration:\n"
- " Baud =%i\n"
- " Handshaking =%s\n"
- " Tx Dbits =%i\n"
- " Rx Dbits =%i\n"
- " Parity =%s\n"
- " Stop Bits =%i\n",
- card->devname,
- card->wandev.bps,
- opt_decode[card->u.c.protocol_options],
- card->u.c.tx_bits_per_char,
- card->u.c.rx_bits_per_char,
- p_decode[card->u.c.parity] ,
- card->u.c.stop_bits);
- }else{
- printk(KERN_INFO "%s: TTY Sync Configuration:\n"
- " Baud =%i\n"
- " Protocol =HDLC_STREAMING\n",
- card->devname,card->wandev.bps);
- }
- if (!err){
- port_set_state(card,WAN_CONNECTED);
- }else{
- port_set_state(card,WAN_DISCONNECTED);
- }
- }
- return;
-}
-
-static void wanpipe_tty_put_char(struct tty_struct *tty, unsigned char ch)
-{
- sdla_t *card;
- unsigned long smp_flags=0;
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
-
- if (!card)
- return;
-
- if (card->wandev.state != WAN_CONNECTED)
- return;
-
- if(card->hw.type != SDLA_S514)
- s508_lock(card,&smp_flags);
-
- if (test_and_set_bit(SEND_CRIT,(void*)&card->wandev.critical)){
-
- wanpipe_tty_trigger_tx_irq(card);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
- return;
- }
-
- if (chdlc_send(card,(void*)&ch,1)){
- wanpipe_tty_trigger_tx_irq(card);
- dbg_printk("%s: Failed to TX char!\n",card->devname);
- }
-
- dbg_printk("%s: Char TX OK\n",card->devname);
-
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
-
- if(card->hw.type != SDLA_S514)
- s508_unlock(card,&smp_flags);
-
- return;
-}
-
-static void wanpipe_tty_flush_chars(struct tty_struct *tty)
-{
- return;
-}
-
-static void wanpipe_tty_flush_buffer(struct tty_struct *tty)
-{
- if (!tty)
- return;
-
-#if defined(SERIAL_HAVE_POLL_WAIT)
- wake_up_interruptible(&tty->poll_wait);
-#endif
- tty_wakeup(tty);
- return;
-}
-
-/*
- * This function is used to send a high-priority XON/XOFF character to
- * the device
- */
-static void wanpipe_tty_send_xchar(struct tty_struct *tty, char ch)
-{
- return;
-}
-
-
-static int wanpipe_tty_chars_in_buffer(struct tty_struct *tty)
-{
- return 0;
-}
-
-
-static int wanpipe_tty_write_room(struct tty_struct *tty)
-{
- sdla_t *card;
-
- printk(KERN_INFO "TTY Write Room\n");
-
- if (!tty){
- return 0;
- }
-
- card = (sdla_t *)tty->driver_data;
- if (!card)
- return 0;
-
- if (card->wandev.state != WAN_CONNECTED)
- return 0;
-
- return SEC_MAX_NO_DATA_BYTES_IN_FRAME;
-}
-
-
-static int set_modem_status(sdla_t *card, unsigned char data)
-{
- CHDLC_MAILBOX_STRUCT *mb = card->mbox;
- int err;
-
- mb->buffer_length=1;
- mb->command=SET_MODEM_STATUS;
- mb->data[0]=data;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mb);
-
- return err;
-}
-
-static void wanpipe_tty_hangup(struct tty_struct *tty)
-{
- sdla_t *card;
- unsigned long smp_flags;
-
- printk(KERN_INFO "TTY Hangup!\n");
-
- if (!tty){
- return;
- }
-
- card = (sdla_t *)tty->driver_data;
- if (!card)
- return;
-
- lock_adapter_irq(&card->wandev.lock,&smp_flags);
- set_modem_status(card,0);
- unlock_adapter_irq(&card->wandev.lock,&smp_flags);
- return;
-}
-
-static void wanpipe_tty_break(struct tty_struct *tty, int break_state)
-{
- return;
-}
-
-static void wanpipe_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
- return;
-}
-
-static void wanpipe_tty_throttle(struct tty_struct * tty)
-{
- return;
-}
-
-static void wanpipe_tty_unthrottle(struct tty_struct * tty)
-{
- return;
-}
-
-int wanpipe_tty_read_proc(char *page, char **start, off_t off, int count,
- int *eof, void *data)
-{
- return 0;
-}
-
-/*
- * The serial driver boot-time initialization code!
- */
-int wanpipe_tty_init(sdla_t *card)
-{
- struct serial_state * state;
-
- /* Initialize the tty_driver structure */
-
- if (card->tty_minor < 0 || card->tty_minor > NR_PORTS){
- printk(KERN_INFO "%s: Illegal Minor TTY number (0-4): %i\n",
- card->devname,card->tty_minor);
- return -EINVAL;
- }
-
- if (WAN_CARD(card->tty_minor)){
- printk(KERN_INFO "%s: TTY Minor %i, already in use\n",
- card->devname,card->tty_minor);
- return -EBUSY;
- }
-
- if (tty_init_cnt==0){
-
- printk(KERN_INFO "%s: TTY %s Driver Init: Major %i, Minor Range %i-%i\n",
- card->devname,
- card->u.c.async_mode ? "ASYNC" : "SYNC",
- WAN_TTY_MAJOR,MIN_PORT,MAX_PORT);
-
- tty_driver_mode = card->u.c.async_mode;
-
- memset(&serial_driver, 0, sizeof(struct tty_driver));
- serial_driver.magic = TTY_DRIVER_MAGIC;
- serial_driver.owner = THIS_MODULE;
- serial_driver.driver_name = "wanpipe_tty";
- serial_driver.name = "ttyW";
- serial_driver.major = WAN_TTY_MAJOR;
- serial_driver.minor_start = WAN_TTY_MINOR;
- serial_driver.num = NR_PORTS;
- serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
- serial_driver.subtype = SERIAL_TYPE_NORMAL;
-
- serial_driver.init_termios = tty_std_termios;
- serial_driver.init_termios.c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
- serial_driver.flags = TTY_DRIVER_REAL_RAW;
-
- serial_driver.refcount = 1; /* !@!@^#^&!! */
-
- serial_driver.open = wanpipe_tty_open;
- serial_driver.close = wanpipe_tty_close;
- serial_driver.write = wanpipe_tty_write;
-
- serial_driver.put_char = wanpipe_tty_put_char;
- serial_driver.flush_chars = wanpipe_tty_flush_chars;
- serial_driver.write_room = wanpipe_tty_write_room;
- serial_driver.chars_in_buffer = wanpipe_tty_chars_in_buffer;
- serial_driver.flush_buffer = wanpipe_tty_flush_buffer;
- //serial_driver.ioctl = wanpipe_tty_ioctl;
- serial_driver.throttle = wanpipe_tty_throttle;
- serial_driver.unthrottle = wanpipe_tty_unthrottle;
- serial_driver.send_xchar = wanpipe_tty_send_xchar;
- serial_driver.set_termios = wanpipe_tty_set_termios;
- serial_driver.stop = wanpipe_tty_stop;
- serial_driver.start = wanpipe_tty_start;
- serial_driver.hangup = wanpipe_tty_hangup;
- serial_driver.break_ctl = wanpipe_tty_break;
- serial_driver.wait_until_sent = wanpipe_tty_wait_until_sent;
- serial_driver.read_proc = wanpipe_tty_read_proc;
-
- if (tty_register_driver(&serial_driver)){
- printk(KERN_INFO "%s: Failed to register serial driver!\n",
- card->devname);
- }
- }
-
-
- /* The subsequent ports must comply to the initial configuration */
- if (tty_driver_mode != card->u.c.async_mode){
- printk(KERN_INFO "%s: Error: TTY Driver operation mode mismatch!\n",
- card->devname);
- printk(KERN_INFO "%s: The TTY driver is configured for %s!\n",
- card->devname, tty_driver_mode ? "ASYNC" : "SYNC");
- return -EINVAL;
- }
-
- tty_init_cnt++;
-
- printk(KERN_INFO "%s: Initializing TTY %s Driver Minor %i\n",
- card->devname,
- tty_driver_mode ? "ASYNC" : "SYNC",
- card->tty_minor);
-
- tty_card_map[card->tty_minor] = card;
- state = &rs_table[card->tty_minor];
-
- state->magic = SSTATE_MAGIC;
- state->line = 0;
- state->type = PORT_UNKNOWN;
- state->custom_divisor = 0;
- state->close_delay = 5*HZ/10;
- state->closing_wait = 30*HZ;
- state->icount.cts = state->icount.dsr =
- state->icount.rng = state->icount.dcd = 0;
- state->icount.rx = state->icount.tx = 0;
- state->icount.frame = state->icount.parity = 0;
- state->icount.overrun = state->icount.brk = 0;
- state->irq = card->wandev.irq;
-
- INIT_WORK(&card->tty_work, tty_poll_work, (void*)card);
- return 0;
-}
-
-
-MODULE_LICENSE("GPL");
-
-/****** End ****************************************************************/
diff --git a/drivers/net/wan/sdla_fr.c b/drivers/net/wan/sdla_fr.c
deleted file mode 100644
index 7f1ce9d4333..00000000000
--- a/drivers/net/wan/sdla_fr.c
+++ /dev/null
@@ -1,5061 +0,0 @@
-/*****************************************************************************
-* sdla_fr.c WANPIPE(tm) Multiprotocol WAN Link Driver. Frame relay module.
-*
-* Author(s): Nenad Corbic <ncorbic@sangoma.com>
-* Gideon Hack
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Nov 23, 2000 Nenad Corbic o Added support for 2.4.X kernels
-* Nov 15, 2000 David Rokavarg
-* Nenad Corbic o Added frame relay bridging support.
-* Original code from Mark Wells and Kristian Hoffmann has
-* been integrated into the frame relay driver.
-* Nov 13, 2000 Nenad Corbic o Added true interface type encoding option.
-* Tcpdump doesn't support Frame Relay inteface
-* types, to fix this true type option will set
-* the interface type to RAW IP mode.
-* Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* Nov 06, 2000 Nenad Corbic o Wanpipe interfaces conform to raw packet interfaces.
-* Moved the if_header into the if_send() routine.
-* The if_header() was breaking the libpcap
-* support. i.e. support for tcpdump, ethereal ...
-* Oct 12. 2000 Nenad Corbic o Added error message in fr_configure
-* Jul 31, 2000 Nenad Corbic o Fixed the Router UP Time.
-* Apr 28, 2000 Nenad Corbic o Added the option to shutdown an interface
-* when the channel gets disconnected.
-* Apr 28, 2000 Nenad Corbic o Added M.Grants patch: disallow duplicate
-* interface setups.
-* Apr 25, 2000 Nenad Corbic o Added M.Grants patch: dynamically add/remove
-* new dlcis/interfaces.
-* Mar 23, 2000 Nenad Corbic o Improved task queue, bh handling.
-* Mar 16, 2000 Nenad Corbic o Added Inverse ARP support
-* Mar 13, 2000 Nenad Corbic o Added new socket API support.
-* Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
-* Feb 24, 2000 Nenad Corbic o Fixed up FT1 UDP debugging problem.
-* Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
-*
-* Nov 08, 1999 Nenad Corbic o Combined all debug UDP calls into one function
-* o Removed the ARP support. This has to be done
-* in the next version.
-* o Only a Node can implement NO signalling.
-* Initialize DLCI during if_open() if NO
-* signalling.
-* o Took out IPX support, implement in next
-* version
-* Sep 29, 1999 Nenad Corbic o Added SMP support and changed the update
-* function to use timer interrupt.
-* o Fixed the CIR bug: Set the value of BC
-* to CIR when the CIR is enabled.
-* o Updated comments, statistics and tracing.
-* Jun 02, 1999 Gideon Hack o Updated for S514 support.
-* Sep 18, 1998 Jaspreet Singh o Updated for 2.2.X kernels.
-* Jul 31, 1998 Jaspreet Singh o Removed wpf_poll routine. The channel/DLCI
-* status is received through an event interrupt.
-* Jul 08, 1998 David Fong o Added inverse ARP support.
-* Mar 26, 1997 Jaspreet Singh o Returning return codes for failed UDP cmds.
-* Jan 28, 1997 Jaspreet Singh o Improved handling of inactive DLCIs.
-* Dec 30, 1997 Jaspreet Singh o Replaced dev_tint() with mark_bh(NET_BH)
-* Dec 16, 1997 Jaspreet Singh o Implemented Multiple IPX support.
-* Nov 26, 1997 Jaspreet Singh o Improved load sharing with multiple boards
-* o Added Cli() to protect enabling of interrupts
-* while polling is called.
-* Nov 24, 1997 Jaspreet Singh o Added counters to avoid enabling of interrupts
-* when they have been disabled by another
-* interface or routine (eg. wpf_poll).
-* Nov 06, 1997 Jaspreet Singh o Added INTR_TEST_MODE to avoid polling
-* routine disable interrupts during interrupt
-* testing.
-* Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
-* Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
-* control by avoiding RACE conditions. The
-* cli() and restore_flags() are taken out.
-* The fr_channel structure is appended for
-* Driver Statistics.
-* Oct 15, 1997 Farhan Thawar o updated if_send() and receive for IPX
-* Aug 29, 1997 Farhan Thawar o Removed most of the cli() and sti()
-* o Abstracted the UDP management stuff
-* o Now use tbusy and critical more intelligently
-* Jul 21, 1997 Jaspreet Singh o Can configure T391, T392, N391, N392 & N393
-* through router.conf.
-* o Protected calls to sdla_peek() by adDing
-* save_flags(), cli() and restore_flags().
-* o Added error message for Inactive DLCIs in
-* fr_event() and update_chan_state().
-* o Fixed freeing up of buffers using kfree()
-* when packets are received.
-* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
-* o Added ability to discard multicast and
-* broadcast source addressed packets
-* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
-* New case (0x44) statement in if_send routine
-* Added a global variable rCount to keep track
-* of FT1 status enabled on the board.
-* May 29, 1997 Jaspreet Singh o Fixed major Flow Control Problem
-* With multiple boards a problem was seen where
-* the second board always stopped transmitting
-* packet after running for a while. The code
-* got into a stage where the interrupts were
-* disabled and dev->tbusy was set to 1.
-* This caused the If_send() routine to get into
-* the if clause for it(0,dev->tbusy)
-* forever.
-* The code got into this stage due to an
-* interrupt occurring within the if clause for
-* set_bit(0,dev->tbusy). Since an interrupt
-* disables furhter transmit interrupt and
-* makes dev->tbusy = 0, this effect was undone
-* by making dev->tbusy = 1 in the if clause.
-* The Fix checks to see if Transmit interrupts
-* are disabled then do not make dev->tbusy = 1
-* Introduced a global variable: int_occur and
-* added tx_int_enabled in the wan_device
-* structure.
-* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple
-* boards.
-*
-* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
-* o fixed bug in if_send() and tx_intr() to
-* sleep and wakeup all devices
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o fixed (+1) bug in fr508_rx_intr()
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* o added tx_intr() routine
-* Jan 30, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* o fixed a bug causing driver configured as
-* a FR switch to be stuck in WAN_
-* mode
-* Jan 02, 1997 Gene Kozin Initial version.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/workqueue.h>
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <asm/io.h> /* for inb(), outb(), etc. */
-#include <linux/time.h> /* for do_gettimeofday */
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/jiffies.h> /* time_after() macro */
-#include <asm/errno.h>
-
-#include <linux/ip.h>
-#include <linux/if.h>
-
-#include <linux/if_wanpipe_common.h> /* Wanpipe Socket */
-#include <linux/if_wanpipe.h>
-
-#include <linux/sdla_fr.h> /* frame relay firmware API definitions */
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <net/route.h> /* Dynamic Route Creation */
-#include <linux/etherdevice.h> /* eth_type_trans() used for bridging */
-#include <linux/random.h>
-
-/****** Defines & Macros ****************************************************/
-
-#define MAX_CMD_RETRY 10 /* max number of firmware retries */
-
-#define FR_HEADER_LEN 8 /* max encapsulation header size */
-#define FR_CHANNEL_MTU 1500 /* unfragmented logical channel MTU */
-
-/* Q.922 frame types */
-#define Q922_UI 0x03 /* Unnumbered Info frame */
-#define Q922_XID 0xAF
-
-/* DLCI configured or not */
-#define DLCI_NOT_CONFIGURED 0x00
-#define DLCI_CONFIG_PENDING 0x01
-#define DLCI_CONFIGURED 0x02
-
-/* CIR enabled or not */
-#define CIR_ENABLED 0x00
-#define CIR_DISABLED 0x01
-
-#define FRAME_RELAY_API 1
-#define MAX_BH_BUFF 10
-
-/* For handle_IPXWAN() */
-#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
-
-/****** Data Structures *****************************************************/
-
-/* This is an extention of the 'struct device' we create for each network
- * interface to keep the rest of channel-specific data.
- */
-typedef struct fr_channel
-{
- wanpipe_common_t common;
- char name[WAN_IFNAME_SZ+1]; /* interface name, ASCIIZ */
- unsigned dlci_configured ; /* check whether configured or not */
- unsigned cir_status; /* check whether CIR enabled or not */
- unsigned dlci; /* logical channel number */
- unsigned cir; /* committed information rate */
- unsigned bc; /* committed burst size */
- unsigned be; /* excess burst size */
- unsigned mc; /* multicast support on or off */
- unsigned tx_int_status; /* Transmit Interrupt Status */
- unsigned short pkt_length; /* Packet Length */
- unsigned long router_start_time;/* Router start time in seconds */
- unsigned long tick_counter; /* counter for transmit time out */
- char dev_pending_devtint; /* interface pending dev_tint() */
- void *dlci_int_interface; /* pointer to the DLCI Interface */
- unsigned long IB_addr; /* physical address of Interface Byte */
- unsigned long state_tick; /* time of the last state change */
- unsigned char enable_IPX; /* Enable/Disable the use of IPX */
- unsigned long network_number; /* Internal Network Number for IPX*/
- sdla_t *card; /* -> owner */
- unsigned route_flag; /* Add/Rem dest addr in route tables */
- unsigned inarp; /* Inverse Arp Request status */
- long inarp_ready; /* Ready to send requests */
- int inarp_interval; /* Time between InArp Requests */
- unsigned long inarp_tick; /* InArp jiffies tick counter */
- long interface_down; /* Bring interface down on disconnect */
- struct net_device_stats ifstats; /* interface statistics */
- if_send_stat_t drvstats_if_send;
- rx_intr_stat_t drvstats_rx_intr;
- pipe_mgmt_stat_t drvstats_gen;
- unsigned long router_up_time;
-
- unsigned short transmit_length;
- struct sk_buff *delay_skb;
-
- bh_data_t *bh_head; /* Circular buffer for chdlc_bh */
- unsigned long tq_working;
- volatile int bh_write;
- volatile int bh_read;
- atomic_t bh_buff_used;
-
- /* Polling task queue. Each interface
- * has its own task queue, which is used
- * to defer events from the interrupt */
- struct work_struct fr_poll_work;
- struct timer_list fr_arp_timer;
-
- u32 ip_local;
- u32 ip_remote;
- long config_dlci;
- long unconfig_dlci;
-
- /* Whether this interface should be setup as a gateway.
- * Used by dynamic route setup code */
- u8 gateway;
-
- /* True interface type */
- u8 true_if_encoding;
- u8 fr_header[FR_HEADER_LEN];
- char fr_header_len;
-
-} fr_channel_t;
-
-/* Route Flag options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-#define ARP_REQ 0x04
-
-/* inarp options */
-#define INARP_NONE 0x00
-#define INARP_REQUEST 0x01
-#define INARP_CONFIGURED 0x02
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP 0x01
-#define TMR_INT_ENABLED_UPDATE 0x02
-#define TMR_INT_ENABLED_ARP 0x04
-#define TMR_INT_ENABLED_UPDATE_STATE 0x08
-#define TMR_INT_ENABLED_CONFIG 0x10
-#define TMR_INT_ENABLED_UNCONFIG 0x20
-
-
-typedef struct dlci_status
-{
- unsigned short dlci PACKED;
- unsigned char state PACKED;
-} dlci_status_t;
-
-typedef struct dlci_IB_mapping
-{
- unsigned short dlci PACKED;
- unsigned long addr_value PACKED;
-} dlci_IB_mapping_t;
-
-/* This structure is used for DLCI list Tx interrupt mode. It is used to
- enable interrupt bit and set the packet length for transmission
- */
-typedef struct fr_dlci_interface
-{
- unsigned char gen_interrupt PACKED;
- unsigned short packet_length PACKED;
- unsigned char reserved PACKED;
-} fr_dlci_interface_t;
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/* variable for keeping track of number of interrupts generated during
- * interrupt test routine
- */
-static int Intr_test_counter;
-
-/****** Function Prototypes *************************************************/
-
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device *wandev);
-static int new_if(struct wan_device *wandev, struct net_device *dev,
- wanif_conf_t *conf);
-static int del_if(struct wan_device *wandev, struct net_device *dev);
-static void disable_comm (sdla_t *card);
-
-/* WANPIPE-specific entry points */
-static int wpf_exec(struct sdla *card, void *u_cmd, void *u_data);
-
-/* Network device interface */
-static int if_init(struct net_device *dev);
-static int if_open(struct net_device *dev);
-static int if_close(struct net_device *dev);
-
-static void if_tx_timeout(struct net_device *dev);
-
-static int if_rebuild_hdr (struct sk_buff *skb);
-
-static int if_send(struct sk_buff *skb, struct net_device *dev);
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb);
-static struct net_device_stats *if_stats(struct net_device *dev);
-
-/* Interrupt handlers */
-static void fr_isr(sdla_t *card);
-static void rx_intr(sdla_t *card);
-static void tx_intr(sdla_t *card);
-static void timer_intr(sdla_t *card);
-static void spur_intr(sdla_t *card);
-
-/* Frame relay firmware interface functions */
-static int fr_read_version(sdla_t *card, char *str);
-static int fr_configure(sdla_t *card, fr_conf_t *conf);
-static int fr_dlci_configure(sdla_t *card, fr_dlc_conf_t *conf, unsigned dlci);
-static int fr_init_dlci (sdla_t *card, fr_channel_t *chan);
-static int fr_set_intr_mode (sdla_t *card, unsigned mode, unsigned mtu, unsigned short timeout);
-static int fr_comm_enable(sdla_t *card);
-static void fr_comm_disable(sdla_t *card);
-static int fr_get_err_stats(sdla_t *card);
-static int fr_get_stats(sdla_t *card);
-static int fr_add_dlci(sdla_t *card, int dlci);
-static int fr_activate_dlci(sdla_t *card, int dlci);
-static int fr_delete_dlci (sdla_t* card, int dlci);
-static int fr_issue_isf(sdla_t *card, int isf);
-static int fr_send(sdla_t *card, int dlci, unsigned char attr, int len,
- void *buf);
-static int fr_send_data_header(sdla_t *card, int dlci, unsigned char attr, int len,
- void *buf,unsigned char hdr_len);
-static unsigned int fr_send_hdr(sdla_t *card, int dlci, unsigned int offset);
-
-static int check_dlci_config (sdla_t *card, fr_channel_t *chan);
-static void initialize_rx_tx_buffers (sdla_t *card);
-
-
-/* Firmware asynchronous event handlers */
-static int fr_event(sdla_t *card, int event, fr_mbox_t *mbox);
-static int fr_modem_failure(sdla_t *card, fr_mbox_t *mbox);
-static int fr_dlci_change(sdla_t *card, fr_mbox_t *mbox);
-
-/* Miscellaneous functions */
-static int update_chan_state(struct net_device *dev);
-static void set_chan_state(struct net_device *dev, int state);
-static struct net_device *find_channel(sdla_t *card, unsigned dlci);
-static int is_tx_ready(sdla_t *card, fr_channel_t *chan);
-static unsigned int dec_to_uint(unsigned char *str, int len);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-
-static int intr_test( sdla_t* card );
-static void init_chan_statistics( fr_channel_t* chan );
-static void init_global_statistics( sdla_t* card );
-static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan );
-static int setup_for_delayed_transmit(struct net_device* dev,
- struct sk_buff *skb);
-
-struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev);
-static int check_tx_status(sdla_t *card, struct net_device *dev);
-
-/* Frame Relay Socket API */
-static void trigger_fr_bh (fr_channel_t *);
-static void fr_bh(struct net_device *dev);
-static int fr_bh_cleanup(struct net_device *dev);
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
-
-static void trigger_fr_poll(struct net_device *dev);
-static void fr_poll(struct net_device *dev);
-//static void add_gateway(struct net_device *dev);
-
-static void trigger_unconfig_fr(struct net_device *dev);
-static void unconfig_fr (sdla_t *);
-
-static void trigger_config_fr (sdla_t *);
-static void config_fr (sdla_t *);
-
-
-/* Inverse ARP and Dynamic routing functions */
-int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device *dev);
-int is_arp(void *buf);
-int send_inarp_request(sdla_t *card, struct net_device *dev);
-
-static void trigger_fr_arp(struct net_device *dev);
-static void fr_arp (unsigned long data);
-
-
-/* Udp management functions */
-static int process_udp_mgmt_pkt(sdla_t *card);
-static int udp_pkt_type( struct sk_buff *skb, sdla_t *card );
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, int dlci);
-
-/* IPX functions */
-static void switch_net_numbers(unsigned char *sendpacket,
- unsigned long network_number, unsigned char incoming);
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname,
- unsigned char enable_IPX, unsigned long network_number);
-
-/* Lock Functions: SMP supported */
-void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags);
-void s508_s514_lock(sdla_t *card, unsigned long *smp_flags);
-
-unsigned short calc_checksum (char *, int);
-static int setup_fr_header(struct sk_buff *skb,
- struct net_device* dev, char op_mode);
-
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Frame relay protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpf_init(sdla_t *card, wandev_conf_t *conf)
-{
-
- int err;
- fr508_flags_t* flags;
-
- union
- {
- char str[80];
- fr_conf_t cfg;
- } u;
-
- fr_buf_info_t* buf_info;
- int i;
-
-
- printk(KERN_INFO "\n");
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_FR) {
-
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
-
- }
-
- /* Initialize protocol-specific fields of adapter data space */
- switch (card->hw.fwid) {
-
- case SFID_FR508:
- card->mbox = (void*)(card->hw.dpmbase +
- FR508_MBOX_OFFS);
- card->flags = (void*)(card->hw.dpmbase +
- FR508_FLAG_OFFS);
- if(card->hw.type == SDLA_S514) {
- card->mbox += FR_MB_VECTOR;
- card->flags += FR_MB_VECTOR;
- }
- card->isr = &fr_isr;
- break;
-
- default:
- return -EINVAL;
- }
-
- flags = card->flags;
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
-
- if (fr_read_version(card, NULL) || fr_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: running frame relay firmware v%s\n",
- card->devname, u.str);
-
- /* Adjust configuration */
- conf->mtu += FR_HEADER_LEN;
- conf->mtu = (conf->mtu >= MIN_LGTH_FR_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, FR_MAX_NO_DATA_BYTES_IN_FRAME) :
- FR_CHANNEL_MTU + FR_HEADER_LEN;
-
- conf->bps = min_t(unsigned int, conf->bps, 2048000);
-
- /* Initialze the configuration structure sent to the board to zero */
- memset(&u.cfg, 0, sizeof(u.cfg));
-
- memset(card->u.f.dlci_to_dev_map, 0, sizeof(card->u.f.dlci_to_dev_map));
-
- /* Configure adapter firmware */
-
- u.cfg.mtu = conf->mtu;
- u.cfg.kbps = conf->bps / 1000;
-
- u.cfg.cir_fwd = u.cfg.cir_bwd = 16;
- u.cfg.bc_fwd = u.cfg.bc_bwd = 16;
-
- u.cfg.options = 0x0000;
- printk(KERN_INFO "%s: Global CIR enabled by Default\n", card->devname);
-
- switch (conf->u.fr.signalling) {
-
- case WANOPT_FR_ANSI:
- u.cfg.options = 0x0000;
- break;
-
- case WANOPT_FR_Q933:
- u.cfg.options |= 0x0200;
- break;
-
- case WANOPT_FR_LMI:
- u.cfg.options |= 0x0400;
- break;
-
- case WANOPT_NO:
- u.cfg.options |= 0x0800;
- break;
- default:
- printk(KERN_INFO "%s: Illegal Signalling option\n",
- card->wandev.name);
- return -EINVAL;
- }
-
-
- card->wandev.signalling = conf->u.fr.signalling;
-
- if (conf->station == WANOPT_CPE) {
-
-
- if (conf->u.fr.signalling == WANOPT_NO){
- printk(KERN_INFO
- "%s: ERROR - For NO signalling, station must be set to Node!",
- card->devname);
- return -EINVAL;
- }
-
- u.cfg.station = 0;
- u.cfg.options |= 0x8000; /* auto config DLCI */
- card->u.f.dlci_num = 0;
-
- } else {
-
- u.cfg.station = 1; /* switch emulation mode */
-
- /* For switch emulation we have to create a list of dlci(s)
- * that will be sent to be global SET_DLCI_CONFIGURATION
- * command in fr_configure() routine.
- */
-
- card->u.f.dlci_num = min_t(unsigned int, max_t(unsigned int, conf->u.fr.dlci_num, 1), 100);
-
- for ( i = 0; i < card->u.f.dlci_num; i++) {
-
- card->u.f.node_dlci[i] = (unsigned short)
- conf->u.fr.dlci[i] ? conf->u.fr.dlci[i] : 16;
-
- }
- }
-
- if (conf->clocking == WANOPT_INTERNAL)
- u.cfg.port |= 0x0001;
-
- if (conf->interface == WANOPT_RS232)
- u.cfg.port |= 0x0002;
-
- if (conf->u.fr.t391)
- u.cfg.t391 = min_t(unsigned int, conf->u.fr.t391, 30);
- else
- u.cfg.t391 = 5;
-
- if (conf->u.fr.t392)
- u.cfg.t392 = min_t(unsigned int, conf->u.fr.t392, 30);
- else
- u.cfg.t392 = 15;
-
- if (conf->u.fr.n391)
- u.cfg.n391 = min_t(unsigned int, conf->u.fr.n391, 255);
- else
- u.cfg.n391 = 2;
-
- if (conf->u.fr.n392)
- u.cfg.n392 = min_t(unsigned int, conf->u.fr.n392, 10);
- else
- u.cfg.n392 = 3;
-
- if (conf->u.fr.n393)
- u.cfg.n393 = min_t(unsigned int, conf->u.fr.n393, 10);
- else
- u.cfg.n393 = 4;
-
- if (fr_configure(card, &u.cfg))
- return -EIO;
-
- if (card->hw.type == SDLA_S514) {
-
- buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
- FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
- card->hw.dpmbase);
- }else{
- buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
- FR_MB_VECTOR + card->hw.dpmbase);
- }
-
- card->u.f.rx_base = buf_info->buf_base;
- card->u.f.rx_top = buf_info->buf_top;
-
- card->u.f.tx_interrupts_pending = 0;
-
- card->wandev.mtu = conf->mtu;
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->poll = NULL;
- card->exec = &wpf_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.state = WAN_DISCONNECTED;
- card->wandev.ttl = conf->ttl;
- card->wandev.udp_port = conf->udp_port;
- card->disable_comm = &disable_comm;
- card->u.f.arp_dev = NULL;
-
- /* Intialize global statistics for a card */
- init_global_statistics( card );
-
- card->TracingEnabled = 0;
-
- /* Interrupt Test */
- Intr_test_counter = 0;
- card->intr_mode = INTR_TEST_MODE;
- err = intr_test( card );
-
- printk(KERN_INFO "%s: End of Interrupt Test rc=0x%x count=%i\n",
- card->devname,err,Intr_test_counter);
-
- if (err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk(KERN_ERR "%s: Interrupt Test Failed, Counter: %i\n",
- card->devname, Intr_test_counter);
- printk(KERN_ERR "Please choose another interrupt\n");
- err = -EIO;
- return err;
- }
-
- printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
- card->devname, Intr_test_counter);
-
-
- /* Apr 28 2000. Nenad Corbic
- * Enable commnunications here, not in if_open or new_if, since
- * interfaces come down when the link is disconnected.
- */
-
- /* If you enable comms and then set ints, you get a Tx int as you
- * perform the SET_INT_TRIGGERS command. So, we only set int
- * triggers and then adjust the interrupt mask (to disable Tx ints)
- * before enabling comms.
- */
- if (fr_set_intr_mode(card, (FR_INTR_RXRDY | FR_INTR_TXRDY |
- FR_INTR_DLC | FR_INTR_TIMER | FR_INTR_TX_MULT_DLCIs) ,
- card->wandev.mtu, 0)) {
- return -EIO;
- }
-
- flags->imask &= ~(FR_INTR_TXRDY | FR_INTR_TIMER);
-
- if (fr_comm_enable(card)) {
- return -EIO;
- }
- wanpipe_set_state(card, WAN_CONNECTED);
- spin_lock_init(&card->u.f.if_send_lock);
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics.
- */
-static int update(struct wan_device* wandev)
-{
- volatile sdla_t* card;
- unsigned long timeout;
- fr508_flags_t* flags;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- card = wandev->private;
- flags = card->flags;
-
-
- card->u.f.update_comms_stats = 1;
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
- flags->imask |= FR_INTR_TIMER;
- timeout = jiffies;
- for(;;) {
- if(card->u.f.update_comms_stats == 0)
- break;
- if (time_after(jiffies, timeout + 1 * HZ)){
- card->u.f.update_comms_stats = 0;
- return -EAGAIN;
- }
- }
-
- return 0;
-}
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf)
-{
- sdla_t* card = wandev->private;
- fr_channel_t* chan;
- int dlci = 0;
- int err = 0;
-
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
-
- printk(KERN_INFO "%s: Invalid interface name!\n",
- card->devname);
- return -EINVAL;
- }
-
- /* allocate and initialize private data */
- chan = kmalloc(sizeof(fr_channel_t), GFP_KERNEL);
-
- if (chan == NULL)
- return -ENOMEM;
-
- memset(chan, 0, sizeof(fr_channel_t));
- strcpy(chan->name, conf->name);
- chan->card = card;
-
- /* verify media address */
- if (isdigit(conf->addr[0])) {
-
- dlci = dec_to_uint(conf->addr, 0);
-
- if (dlci && (dlci <= HIGHEST_VALID_DLCI)) {
-
- chan->dlci = dlci;
-
- } else {
-
- printk(KERN_ERR
- "%s: Invalid DLCI %u on interface %s!\n",
- wandev->name, dlci, chan->name);
- err = -EINVAL;
- }
-
- } else {
- printk(KERN_ERR
- "%s: Invalid media address on interface %s!\n",
- wandev->name, chan->name);
- err = -EINVAL;
- }
-
- if ((chan->true_if_encoding = conf->true_if_encoding) == WANOPT_YES){
- printk(KERN_INFO
- "%s: Enabling, true interface type encoding.\n",
- card->devname);
- }
-
-
-
- /* Setup wanpipe as a router (WANPIPE) even if it is
- * a bridged DLCI, or as an API
- */
- if (strcmp(conf->usedby, "WANPIPE") == 0 ||
- strcmp(conf->usedby, "BRIDGE") == 0 ||
- strcmp(conf->usedby, "BRIDGE_N") == 0){
-
- if(strcmp(conf->usedby, "WANPIPE") == 0){
- chan->common.usedby = WANPIPE;
-
- printk(KERN_INFO "%s: Running in WANPIPE mode.\n",
- card->devname);
-
- }else if(strcmp(conf->usedby, "BRIDGE") == 0){
-
- chan->common.usedby = BRIDGE;
-
- printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE) mode.\n",
- card->devname);
- }else if( strcmp(conf->usedby, "BRIDGE_N") == 0 ){
-
- chan->common.usedby = BRIDGE_NODE;
-
- printk(KERN_INFO "%s: Running in WANPIPE (BRIDGE_NODE) mode.\n",
- card->devname);
- }
-
- if (!err){
- /* Dynamic interface configuration option.
- * On disconnect, if the options is selected,
- * the interface will be brought down */
- if (conf->if_down == WANOPT_YES){
- set_bit(DYN_OPT_ON,&chan->interface_down);
- printk(KERN_INFO
- "%s: Dynamic interface configuration enabled.\n",
- card->devname);
- }
- }
-
- } else if(strcmp(conf->usedby, "API") == 0){
-
- chan->common.usedby = API;
- printk(KERN_INFO "%s: Running in API mode.\n",
- wandev->name);
- }
-
- if (err) {
-
- kfree(chan);
- return err;
- }
-
- /* place cir,be,bc and other channel specific information into the
- * chan structure
- */
- if (conf->cir) {
-
- chan->cir = max_t(unsigned int, 1,
- min_t(unsigned int, conf->cir, 512));
- chan->cir_status = CIR_ENABLED;
-
-
- /* If CIR is enabled, force BC to equal CIR
- * this solves number of potential problems if CIR is
- * set and BC is not
- */
- chan->bc = chan->cir;
-
- if (conf->be){
- chan->be = max_t(unsigned int,
- 0, min_t(unsigned int, conf->be, 511));
- }else{
- conf->be = 0;
- }
-
- printk (KERN_INFO "%s: CIR enabled for DLCI %i \n",
- wandev->name,chan->dlci);
- printk (KERN_INFO "%s: CIR = %i ; BC = %i ; BE = %i\n",
- wandev->name,chan->cir,chan->bc,chan->be);
-
-
- }else{
- chan->cir_status = CIR_DISABLED;
- printk (KERN_INFO "%s: CIR disabled for DLCI %i\n",
- wandev->name,chan->dlci);
- }
-
- chan->mc = conf->mc;
-
- if (conf->inarp == WANOPT_YES){
- printk(KERN_INFO "%s: Inverse ARP Support Enabled\n",card->devname);
- chan->inarp = conf->inarp ? INARP_REQUEST : INARP_NONE;
- chan->inarp_interval = conf->inarp_interval ? conf->inarp_interval : 10;
- }else{
- printk(KERN_INFO "%s: Inverse ARP Support Disabled\n",card->devname);
- chan->inarp = INARP_NONE;
- chan->inarp_interval = 10;
- }
-
-
- chan->dlci_configured = DLCI_NOT_CONFIGURED;
-
-
- /*FIXME: IPX disabled in this WANPIPE version */
- if (conf->enable_IPX == WANOPT_YES){
- printk(KERN_INFO "%s: ERROR - This version of WANPIPE doesn't support IPX\n",
- card->devname);
- kfree(chan);
- return -EINVAL;
- }else{
- chan->enable_IPX = WANOPT_NO;
- }
-
- if (conf->network_number){
- chan->network_number = conf->network_number;
- }else{
- chan->network_number = 0xDEADBEEF;
- }
-
- chan->route_flag = NO_ROUTE;
-
- init_chan_statistics(chan);
-
- chan->transmit_length = 0;
-
- /* prepare network device data space for registration */
- strcpy(dev->name,chan->name);
-
- dev->init = &if_init;
- dev->priv = chan;
-
- /* Initialize FR Polling Task Queue
- * We need a poll routine for each network
- * interface.
- */
- INIT_WORK(&chan->fr_poll_work, (void *)fr_poll, dev);
-
- init_timer(&chan->fr_arp_timer);
- chan->fr_arp_timer.data=(unsigned long)dev;
- chan->fr_arp_timer.function = fr_arp;
-
- wandev->new_if_cnt++;
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((chan->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,dev->name);
- }
-
- /* M. Grant Patch Apr 28 2000
- * Disallow duplicate dlci configurations. */
- if (card->u.f.dlci_to_dev_map[chan->dlci] != NULL) {
- kfree(chan);
- return -EBUSY;
- }
-
- /* Configure this dlci at a later date, when
- * the interface comes up. i.e. when if_open()
- * executes */
- set_bit(0,&chan->config_dlci);
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device* wandev, struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- unsigned long smp_flags=0;
-
- /* This interface is dead, make sure the
- * ARP timer is stopped */
- del_timer(&chan->fr_arp_timer);
-
- /* If we are a NODE, we must unconfigure this DLCI
- * Trigger an unconfigure command that will
- * be executed in timer interrupt. We must wait
- * for the command to complete. */
- trigger_unconfig_fr(dev);
-
- lock_adapter_irq(&wandev->lock, &smp_flags);
- wandev->new_if_cnt--;
- unlock_adapter_irq(&wandev->lock, &smp_flags);
-
- return 0;
-}
-
-
-/*=====================================================================
- * disable_comm
- *
- * Description:
- * Disable communications.
- * This code runs in shutdown (sdlamain.c)
- * under critical flag. Therefore it is not
- * necessary to set a critical flag here
- *
- * Usage:
- * Commnunications are disabled only on a card
- * shutdown.
- */
-
-static void disable_comm (sdla_t *card)
-{
- printk(KERN_INFO "%s: Disabling Communications!\n",
- card->devname);
- fr_comm_disable(card);
-}
-
-/****** WANPIPE-specific entry points ***************************************/
-
-/*============================================================================
- * Execute adapter interface command.
- */
-static int wpf_exec (struct sdla* card, void* u_cmd, void* u_data)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err, len;
- fr_cmd_t cmd;
-
- if(copy_from_user((void*)&cmd, u_cmd, sizeof(cmd)))
- return -EFAULT;
-
- /* execute command */
- do
- {
- memcpy(&mbox->cmd, &cmd, sizeof(cmd));
-
- if (cmd.length){
- if( copy_from_user((void*)&mbox->data, u_data, cmd.length))
- return -EFAULT;
- }
-
- if (sdla_exec(mbox))
- err = mbox->cmd.result;
-
- else return -EIO;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- /* return result */
- if (copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(fr_cmd_t)))
- return -EFAULT;
-
- len = mbox->cmd.length;
-
- if (len && u_data && !copy_to_user(u_data, (void*)&mbox->data, len))
- return -EFAULT;
- return 0;
-}
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration. Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- struct wan_device* wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = NULL;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- if (chan->common.usedby == WANPIPE || chan->common.usedby == API){
-
- /* Initialize media-specific parameters */
- if (chan->true_if_encoding){
- dev->type = ARPHRD_DLCI; /* This breaks tcpdump */
- }else{
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- }
-
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Multicast addressing */
- if (chan->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- dev->mtu = wandev->mtu - FR_HEADER_LEN;
- /* For an API, the maximum number of bytes that the stack will pass
- to the driver is (dev->mtu + dev->hard_header_len). So, adjust the
- mtu so that a frame of maximum size can be transmitted by the API.
- */
- if(chan->common.usedby == API) {
- dev->mtu += (sizeof(api_tx_hdr_t) - FR_HEADER_LEN);
- }
-
- dev->hard_header_len = FR_HEADER_LEN;/* media header length */
- dev->addr_len = 2; /* hardware address length */
- *(unsigned short*)dev->dev_addr = htons(chan->dlci);
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 100;
-
- }else{
-
- /* Setup the interface for Bridging */
- int hw_addr=0;
- ether_setup(dev);
-
- /* Use a random number to generate the MAC address */
- memcpy(dev->dev_addr, "\xFE\xFC\x00\x00\x00\x00", 6);
- get_random_bytes(&hw_addr, sizeof(hw_addr));
- *(int *)(dev->dev_addr + 2) += hw_addr;
- }
-
- /* Initialize hardware parameters (just for reference) */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
- SET_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o if this is the first open, then enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- int err = 0;
- struct timeval tv;
-
- if (netif_running(dev))
- return -EBUSY;
-
- /* Initialize the task queue */
- chan->tq_working=0;
-
- INIT_WORK(&chan->common.wanpipe_work, (void *)fr_bh, dev);
-
- /* Allocate and initialize BH circular buffer */
- chan->bh_head = kmalloc((sizeof(bh_data_t)*MAX_BH_BUFF),GFP_ATOMIC);
- memset(chan->bh_head,0,(sizeof(bh_data_t)*MAX_BH_BUFF));
- atomic_set(&chan->bh_buff_used, 0);
-
- netif_start_queue(dev);
-
- wanpipe_open(card);
- do_gettimeofday( &tv );
- chan->router_start_time = tv.tv_sec;
-
- if (test_bit(0,&chan->config_dlci)){
- trigger_config_fr (card);
- }else if (chan->inarp == INARP_REQUEST){
- trigger_fr_arp(dev);
- }
-
- return err;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last open, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- netif_stop_queue(dev);
- wanpipe_close(card);
-
- return 0;
-}
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff* skb)
-{
- struct net_device *dev = skb->dev;
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, dev->name);
- return 1;
-}
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- chan->drvstats_if_send.if_send_tbusy++;
- ++chan->ifstats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n",
- card->devname, dev->name);
- chan->drvstats_if_send.if_send_tbusy_timeout++;
- netif_wake_queue (dev);
-
-}
-
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o set critical flag when accessing board.
- * o check link state. If link is not up, then drop the packet.
- * o check channel status. If it's down then initiate a call.
- * o pass a packet to corresponding WAN device.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- *
- * 2. Using netif_start_queue() and netif_stop_queue()
- * will inhibit further transmit requests from the protocol stack
- * and can be used for flow control with protocol layer.
- */
-static int if_send(struct sk_buff* skb, struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- int err;
- unsigned char *sendpacket;
- fr508_flags_t* adptr_flags = card->flags;
- int udp_type;
- long delay_tx_queued = 0;
- unsigned long smp_flags=0;
- unsigned char attr = 0;
-
- chan->drvstats_if_send.if_send_entry++;
-
- netif_stop_queue(dev);
-
- if (skb == NULL) {
- /* if we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
- chan->drvstats_if_send.if_send_skb_null ++;
-
- netif_wake_queue(dev);
- return 0;
- }
-
- /* If a peripheral task is running just drop packets */
- if (test_bit(PERI_CRIT, &card->wandev.critical)){
-
- printk(KERN_INFO "%s: Critical in if_send(): Peripheral running!\n",
- card->devname);
-
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
- /* We must set the 'tbusy' flag if we already have a packet queued for
- transmission in the transmit interrupt handler. However, we must
- ensure that the transmit interrupt does not reset the 'tbusy' flag
- just before we set it, as this will result in a "transmit timeout".
- */
- set_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
- if(chan->transmit_length) {
- netif_stop_queue(dev);
- chan->tick_counter = jiffies;
- clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
- return 1;
- }
- clear_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical);
-
- /* Move the if_header() code to here. By inserting frame
- * relay header in if_header() we would break the
- * tcpdump and other packet sniffers */
- chan->fr_header_len = setup_fr_header(skb,dev,chan->common.usedby);
- if (chan->fr_header_len < 0 ){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
- sendpacket = skb->data;
-
- udp_type = udp_pkt_type(skb, card);
-
- if(udp_type != UDP_INVALID_TYPE) {
- if(store_udp_mgmt_pkt(udp_type, UDP_PKT_FRM_STACK, card, skb,
- chan->dlci)) {
- adptr_flags->imask |= FR_INTR_TIMER;
- if (udp_type == UDP_FPIPE_TYPE){
- chan->drvstats_if_send.
- if_send_PIPE_request ++;
- }
- }
- netif_start_queue(dev);
- return 0;
- }
-
- //FIXME: can we do better than sendpacket[2]?
- if ((chan->common.usedby == WANPIPE) && (sendpacket[2] == 0x45)) {
-
- /* check to see if the source IP address is a broadcast or */
- /* multicast IP address */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
- }
-
-
- /* Lock the S514/S508 card: SMP Supported */
- s508_s514_lock(card,&smp_flags);
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- chan->drvstats_if_send.if_send_critical_non_ISR ++;
- chan->ifstats.tx_dropped ++;
- printk(KERN_INFO "%s Critical in IF_SEND: if_send() already running!\n",
- card->devname);
- goto if_send_start_and_exit;
- }
-
- /* API packet check: minimum packet size must be greater than
- * 16 byte API header */
- if((chan->common.usedby == API) && (skb->len <= sizeof(api_tx_hdr_t))) {
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
-
- goto if_send_start_and_exit;
-
- }else{
- /* During API transmission, get rid of the API header */
- if (chan->common.usedby == API) {
- api_tx_hdr_t* api_tx_hdr;
- api_tx_hdr = (api_tx_hdr_t*)&skb->data[0x00];
- attr = api_tx_hdr->attr;
- skb_pull(skb,sizeof(api_tx_hdr_t));
- }
- }
-
- if (card->wandev.state != WAN_CONNECTED) {
- chan->drvstats_if_send.if_send_wan_disconnected ++;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else if (chan->common.state != WAN_CONNECTED) {
- chan->drvstats_if_send.if_send_dlci_disconnected ++;
-
- /* Update the DLCI state in timer interrupt */
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UPDATE_STATE;
- adptr_flags->imask |= FR_INTR_TIMER;
-
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else if (!is_tx_ready(card, chan)) {
- /* No tx buffers available, store for delayed transmit */
- if (!setup_for_delayed_transmit(dev, skb)){
- set_bit(1,&delay_tx_queued);
- }
- chan->drvstats_if_send.if_send_no_bfrs++;
-
- } else if (!skb->protocol) {
- /* No protocols drop packet */
- chan->drvstats_if_send.if_send_protocol_error ++;
- ++card->wandev.stats.tx_errors;
-
- } else if (test_bit(ARP_CRIT,&card->wandev.critical)){
- /* We are trying to send an ARP Packet, block IP data until
- * ARP is sent */
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
-
- } else {
- //FIXME: IPX is not implemented in this version of Frame Relay ?
- if((chan->common.usedby == WANPIPE) &&
- sendpacket[1] == 0x00 &&
- sendpacket[2] == 0x80 &&
- sendpacket[6] == 0x81 &&
- sendpacket[7] == 0x37) {
-
- if( chan->enable_IPX ) {
- switch_net_numbers(sendpacket,
- chan->network_number, 0);
- } else {
- //FIXME: Take this out when IPX is fixed
- printk(KERN_INFO
- "%s: WARNING: Unsupported IPX data in send, packet dropped\n",
- card->devname);
- }
-
- }else{
- err = fr_send_data_header(card, chan->dlci, attr, skb->len, skb->data, chan->fr_header_len);
- if (err) {
- switch(err) {
- case FRRES_CIR_OVERFLOW:
- case FRRES_BUFFER_OVERFLOW:
- if (!setup_for_delayed_transmit(dev, skb)){
- set_bit(1,&delay_tx_queued);
- }
- chan->drvstats_if_send.
- if_send_adptr_bfrs_full ++;
- break;
-
- case FRRES_TOO_LONG:
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Error: Frame too long, transmission failed %i\n",
- card->devname, (unsigned int)skb->len);
- }
- /* Drop down to default */
- default:
- chan->drvstats_if_send.
- if_send_dlci_disconnected ++;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- break;
- }
- } else {
- chan->drvstats_if_send.
- if_send_bfr_passed_to_adptr++;
- ++chan->ifstats.tx_packets;
- ++card->wandev.stats.tx_packets;
-
- chan->ifstats.tx_bytes += skb->len;
- card->wandev.stats.tx_bytes += skb->len;
- dev->trans_start = jiffies;
- }
- }
- }
-
-if_send_start_and_exit:
-
- netif_start_queue(dev);
-
- /* If we queued the packet for transmission, we must not
- * deallocate it. The packet is unlinked from the IP stack
- * not copied. Therefore, we must keep the original packet */
- if (!test_bit(1,&delay_tx_queued)) {
- dev_kfree_skb_any(skb);
- }else{
- adptr_flags->imask |= FR_INTR_TXRDY;
- card->u.f.tx_interrupts_pending ++;
- }
-
- clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
-
- s508_s514_unlock(card,&smp_flags);
-
- return 0;
-}
-
-
-
-/*============================================================================
- * Setup so that a frame can be transmitted on the occurrence of a transmit
- * interrupt.
- */
-static int setup_for_delayed_transmit(struct net_device* dev,
- struct sk_buff *skb)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- fr_dlci_interface_t* dlci_interface;
- int len = skb->len;
-
- /* Check that the dlci is properly configured,
- * before using tx interrupt */
- if (!chan->dlci_int_interface){
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: ERROR on DLCI %i: Not configured properly !\n",
- card->devname, chan->dlci);
- printk(KERN_INFO "%s: Please contact Sangoma Technologies\n",
- card->devname);
- }
- return 1;
- }
-
- dlci_interface = chan->dlci_int_interface;
-
- if(chan->transmit_length) {
- printk(KERN_INFO "%s: Big mess in setup_for_del...\n",
- card->devname);
- return 1;
- }
-
- if(len > FR_MAX_NO_DATA_BYTES_IN_FRAME) {
- //FIXME: increment some statistic */
- return 1;
- }
-
- chan->transmit_length = len;
- chan->delay_skb = skb;
-
- dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
- dlci_interface->packet_length = len;
-
- /* Turn on TX interrupt at the end of if_send */
- return 0;
-}
-
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- * Return 0 if not broadcast/multicast address, otherwise return 1.
- */
-
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb)
-{
- u32 src_ip_addr;
- u32 broadcast_ip_addr = 0;
- struct in_device *in_dev;
- fr_channel_t* chan = dev->priv;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 14);
-
- /* read the IP broadcast address for the device */
- in_dev = dev->ip_ptr;
- if(in_dev != NULL) {
- struct in_ifaddr *ifa= in_dev->ifa_list;
- if(ifa != NULL)
- broadcast_ip_addr = ifa->ifa_broadcast;
- else
- return 0;
- }
-
- /* check if the IP Source Address is a Broadcast address */
- if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
- printk(KERN_INFO
- "%s: Broadcast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- /* check if the IP Source Address is a Multicast address */
- if((chan->mc == WANOPT_NO) && (ntohl(src_ip_addr) >= 0xE0000001) &&
- (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
- printk(KERN_INFO
- "%s: Multicast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- return 0;
-}
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return nothing.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
-
-
- fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = //sizeof(fr_encap_hdr_t)+
- sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* fill in UDP reply */
- fr_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound = 1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- fr_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = fr_udp_pkt->udp_pkt.udp_src_port;
- fr_udp_pkt->udp_pkt.udp_src_port =
- fr_udp_pkt->udp_pkt.udp_dst_port;
- fr_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)
- (fr_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)
- (fr_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
- /* calculate UDP checksum */
- fr_udp_pkt->udp_pkt.udp_checksum = 0;
-
- fr_udp_pkt->udp_pkt.udp_checksum =
- calc_checksum(&data[UDP_OFFSET/*+sizeof(fr_encap_hdr_t)*/],
- udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = udp_length + sizeof(ip_pkt_t);
- temp = (ip_length<<8)|(ip_length>>8);
- fr_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = fr_udp_pkt->ip_pkt.ip_src_address;
- fr_udp_pkt->ip_pkt.ip_src_address =
- fr_udp_pkt->ip_pkt.ip_dst_address;
- fr_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
-
- /* fill in IP checksum */
- fr_udp_pkt->ip_pkt.hdr_checksum = 0;
- fr_udp_pkt->ip_pkt.hdr_checksum =
- calc_checksum(&data[/*sizeof(fr_encap_hdr_t)*/0],
- sizeof(ip_pkt_t));
-
- return len;
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-/*
- If incoming is 0 (outgoing)- if the net numbers is ours make it 0
- if incoming is 1 - if the net number is 0 make it ours
-
-*/
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
-{
- unsigned long pnetwork_number;
-
- pnetwork_number = (unsigned long)((sendpacket[14] << 24) +
- (sendpacket[15] << 16) + (sendpacket[16] << 8) +
- sendpacket[17]);
-
- if (!incoming) {
- /* If the destination network number is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[14] = sendpacket[15] = sendpacket[16] =
- sendpacket[17] = 0x00;
- }
- } else {
- /* If the incoming network is 0, make it ours */
- if( pnetwork_number == 0) {
- sendpacket[14] = (unsigned char)(network_number >> 24);
- sendpacket[15] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[16] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[17] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-
-
- pnetwork_number = (unsigned long)((sendpacket[26] << 24) +
- (sendpacket[27] << 16) + (sendpacket[28] << 8) +
- sendpacket[29]);
-
- if( !incoming ) {
- /* If the source network is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[26] = sendpacket[27] = sendpacket[28] =
- sendpacket[29] = 0x00;
- }
- } else {
- /* If the source network is 0, make it ours */
- if( pnetwork_number == 0 ) {
- sendpacket[26] = (unsigned char)(network_number >> 24);
- sendpacket[27] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[28] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[29] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats *if_stats(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- if(chan == NULL)
- return NULL;
-
- return &chan->ifstats;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * fr_isr: S508 frame relay interrupt service routine.
- *
- * Description:
- * Frame relay main interrupt service route. This
- * function check the interrupt type and takes
- * the appropriate action.
- */
-static void fr_isr (sdla_t* card)
-{
- fr508_flags_t* flags = card->flags;
- char *ptr = &flags->iflag;
- int i,err;
- fr_mbox_t* mbox = card->mbox;
-
- /* This flag prevents nesting of interrupts. See sdla_isr() routine
- * in sdlamain.c. */
- card->in_isr = 1;
-
- ++card->statistics.isr_entry;
-
-
- /* All peripheral (configuraiton, re-configuration) events
- * take presidence over the ISR. Thus, retrigger */
- if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- ++card->statistics.isr_already_critical;
- goto fr_isr_exit;
- }
-
- if(card->hw.type != SDLA_S514) {
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "%s: Critical while in ISR: If Send Running!\n",
- card->devname);
- ++card->statistics.isr_already_critical;
- goto fr_isr_exit;
- }
- }
-
- switch (flags->iflag) {
-
- case FR_INTR_RXRDY: /* receive interrupt */
- ++card->statistics.isr_rx;
- rx_intr(card);
- break;
-
-
- case FR_INTR_TXRDY: /* transmit interrupt */
- ++ card->statistics.isr_tx;
- tx_intr(card);
- break;
-
- case FR_INTR_READY:
- Intr_test_counter++;
- ++card->statistics.isr_intr_test;
- break;
-
- case FR_INTR_DLC: /* Event interrupt occurred */
- mbox->cmd.command = FR_READ_STATUS;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- fr_event(card, err, mbox);
- break;
-
- case FR_INTR_TIMER: /* Timer interrupt */
- timer_intr(card);
- break;
-
- default:
- ++card->statistics.isr_spurious;
- spur_intr(card);
- printk(KERN_INFO "%s: Interrupt Type 0x%02X!\n",
- card->devname, flags->iflag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- break;
- }
-
-fr_isr_exit:
-
- card->in_isr = 0;
- flags->iflag = 0;
- return;
-}
-
-
-
-/*===========================================================
- * rx_intr Receive interrupt handler.
- *
- * Description
- * Upon receiveing an interrupt:
- * 1. Check that the firmware is in sync with
- * the driver.
- * 2. Find an appropriate network interface
- * based on the received dlci number.
- * 3. Check that the netowrk interface exists
- * and that it's setup properly.
- * 4. Copy the data into an skb buffer.
- * 5. Check the packet type and take
- * appropriate acton: UPD, API, ARP or Data.
- */
-
-static void rx_intr (sdla_t* card)
-{
- fr_rx_buf_ctl_t* frbuf = card->rxmb;
- fr508_flags_t* flags = card->flags;
- fr_channel_t* chan;
- char *ptr = &flags->iflag;
- struct sk_buff* skb;
- struct net_device* dev;
- void* buf;
- unsigned dlci, len, offs, len_incl_hdr;
- int i, udp_type;
-
-
- /* Check that firmware buffers are in sync */
- if (frbuf->flag != 0x01) {
-
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)frbuf, frbuf->flag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- ++card->statistics.rx_intr_corrupt_rx_bfr;
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it means that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- fr_set_intr_mode(card, 0, 0, 0);
- return;
- }
-
- len = frbuf->length;
- dlci = frbuf->dlci;
- offs = frbuf->offset;
-
- /* Find the network interface for this packet */
- dev = find_channel(card, dlci);
-
-
- /* Check that the network interface is active and
- * properly setup */
- if (dev == NULL) {
- if( net_ratelimit()) {
- printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
- card->devname, dlci);
- }
- ++card->statistics.rx_intr_on_orphaned_DLCI;
- ++card->wandev.stats.rx_dropped;
- goto rx_done;
- }
-
- if ((chan = dev->priv) == NULL){
- if( net_ratelimit()) {
- printk(KERN_INFO "%s: received data on unconfigured DLCI %d!\n",
- card->devname, dlci);
- }
- ++card->statistics.rx_intr_on_orphaned_DLCI;
- ++card->wandev.stats.rx_dropped;
- goto rx_done;
- }
-
- skb = dev_alloc_skb(len);
-
- if (!netif_running(dev) || (skb == NULL)){
-
- ++chan->ifstats.rx_dropped;
-
- if(skb == NULL) {
- if (net_ratelimit()) {
- printk(KERN_INFO
- "%s: no socket buffers available!\n",
- card->devname);
- }
- chan->drvstats_rx_intr.rx_intr_no_socket ++;
- }
-
- if (!netif_running(dev)){
- chan->drvstats_rx_intr.
- rx_intr_dev_not_started ++;
- if (skb){
- dev_kfree_skb_any(skb);
- }
- }
- goto rx_done;
- }
-
- /* Copy data from the board into the socket buffer */
- if ((offs + len) > card->u.f.rx_top + 1) {
- unsigned tmp = card->u.f.rx_top - offs + 1;
-
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, offs, buf, tmp);
- offs = card->u.f.rx_base;
- len -= tmp;
- }
-
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, offs, buf, len);
-
-
- /* We got the packet from the bard.
- * Check the packet type and take appropriate action */
-
- udp_type = udp_pkt_type( skb, card );
-
- if(udp_type != UDP_INVALID_TYPE) {
-
- /* UDP Debug packet received, store the
- * packet and handle it in timer interrupt */
-
- skb_pull(skb, 1);
- if (wanrouter_type_trans(skb, dev)){
- if(store_udp_mgmt_pkt(udp_type,UDP_PKT_FRM_NETWORK,card,skb,dlci)){
-
- flags->imask |= FR_INTR_TIMER;
-
- if (udp_type == UDP_FPIPE_TYPE){
- ++chan->drvstats_rx_intr.rx_intr_PIPE_request;
- }
- }
- }
-
- }else if (chan->common.usedby == API) {
-
- /* We are in API mode.
- * Add an API header to the RAW packet
- * and queue it into a circular buffer.
- * Then kick the fr_bh() bottom half handler */
-
- api_rx_hdr_t* api_rx_hdr;
- chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack ++;
- chan->ifstats.rx_packets ++;
- card->wandev.stats.rx_packets ++;
-
- chan->ifstats.rx_bytes += skb->len;
- card->wandev.stats.rx_bytes += skb->len;
-
- skb_push(skb, sizeof(api_rx_hdr_t));
- api_rx_hdr = (api_rx_hdr_t*)&skb->data[0x00];
- api_rx_hdr->attr = frbuf->attr;
- api_rx_hdr->time_stamp = frbuf->tmstamp;
-
- skb->protocol = htons(ETH_P_IP);
- skb->mac.raw = skb->data;
- skb->dev = dev;
- skb->pkt_type = WAN_PACKET_DATA;
-
- bh_enqueue(dev, skb);
-
- trigger_fr_bh(chan);
-
- }else if (handle_IPXWAN(skb->data,chan->name,chan->enable_IPX, chan->network_number)){
-
- //FIXME: Frame Relay IPX is not supported, Yet !
- //if (chan->enable_IPX) {
- // fr_send(card, dlci, 0, skb->len,skb->data);
- //}
- dev_kfree_skb_any(skb);
-
- } else if (is_arp(skb->data)) {
-
- /* ARP support enabled Mar 16 2000
- * Process incoming ARP reply/request, setup
- * dynamic routes. */
-
- if (process_ARP((arphdr_1490_t *)skb->data, card, dev)) {
- if (net_ratelimit()){
- printk (KERN_INFO
- "%s: Error processing ARP Packet.\n",
- card->devname);
- }
- }
- dev_kfree_skb_any(skb);
-
- } else if (skb->data[0] != 0x03) {
-
- if (net_ratelimit()) {
- printk(KERN_INFO "%s: Non IETF packet discarded.\n",
- card->devname);
- }
- dev_kfree_skb_any(skb);
-
- } else {
-
- len_incl_hdr = skb->len;
- /* Decapsulate packet and pass it up the
- protocol stack */
- skb->dev = dev;
-
- if (chan->common.usedby == BRIDGE || chan->common.usedby == BRIDGE_NODE){
-
- /* Make sure it's an Ethernet frame, otherwise drop it */
- if (!memcmp(skb->data, "\x03\x00\x80\x00\x80\xC2\x00\x07", 8)) {
- skb_pull(skb, 8);
- skb->protocol=eth_type_trans(skb,dev);
- }else{
- ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
- ++chan->ifstats.rx_errors;
- ++card->wandev.stats.rx_errors;
- goto rx_done;
- }
- }else{
-
- /* remove hardware header */
- buf = skb_pull(skb, 1);
-
- if (!wanrouter_type_trans(skb, dev)) {
-
- /* can't decapsulate packet */
- dev_kfree_skb_any(skb);
-
- ++chan->drvstats_rx_intr.rx_intr_bfr_not_passed_to_stack;
- ++chan->ifstats.rx_errors;
- ++card->wandev.stats.rx_errors;
- goto rx_done;
- }
- skb->mac.raw = skb->data;
- }
-
-
- /* Send a packet up the IP stack */
- skb->dev->last_rx = jiffies;
- netif_rx(skb);
- ++chan->drvstats_rx_intr.rx_intr_bfr_passed_to_stack;
- ++chan->ifstats.rx_packets;
- ++card->wandev.stats.rx_packets;
-
- chan->ifstats.rx_bytes += len_incl_hdr;
- card->wandev.stats.rx_bytes += len_incl_hdr;
- }
-
-rx_done:
-
- /* Release buffer element and calculate a pointer to the next one */
- frbuf->flag = 0;
- card->rxmb = ++frbuf;
- if ((void*)frbuf > card->u.f.rxmb_last)
- card->rxmb = card->u.f.rxmb_base;
-
-}
-
-/*==================================================================
- * tx_intr: Transmit interrupt handler.
- *
- * Rationale:
- * If the board is busy transmitting, if_send() will
- * buffers a single packet and turn on
- * the tx interrupt. Tx interrupt will be called
- * by the board, once the firmware can send more
- * data. Thus, no polling is required.
- *
- * Description:
- * Tx interrupt is called for each
- * configured dlci channel. Thus:
- * 1. Obtain the netowrk interface based on the
- * dlci number.
- * 2. Check that network interface is up and
- * properly setup.
- * 3. Check for a buffered packet.
- * 4. Transmit the packet.
- * 5. If we are in WANPIPE mode, mark the
- * NET_BH handler.
- * 6. If we are in API mode, kick
- * the AF_WANPIPE socket for more data.
- *
- */
-static void tx_intr(sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
- fr_tx_buf_ctl_t* bctl;
- struct net_device* dev;
- fr_channel_t* chan;
-
- if(card->hw.type == SDLA_S514){
- bctl = (void*)(flags->tse_offs + card->hw.dpmbase);
- }else{
- bctl = (void*)(flags->tse_offs - FR_MB_VECTOR +
- card->hw.dpmbase);
- }
-
- /* Find the structure and make it unbusy */
- dev = find_channel(card, flags->dlci);
- if (dev == NULL){
- printk(KERN_INFO "NO DEV IN TX Interrupt\n");
- goto end_of_tx_intr;
- }
-
- if ((chan = dev->priv) == NULL){
- printk(KERN_INFO "NO CHAN IN TX Interrupt\n");
- goto end_of_tx_intr;
- }
-
- if(!chan->transmit_length || !chan->delay_skb) {
- printk(KERN_INFO "%s: tx int error - transmit length zero\n",
- card->wandev.name);
- goto end_of_tx_intr;
- }
-
- /* If the 'if_send()' procedure is currently checking the 'tbusy'
- status, then we cannot transmit. Instead, we configure the microcode
- so as to re-issue this transmit interrupt at a later stage.
- */
- if (test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
-
- fr_dlci_interface_t* dlci_interface = chan->dlci_int_interface;
- bctl->flag = 0xA0;
- dlci_interface->gen_interrupt |= FR_INTR_TXRDY;
- return;
-
- }else{
- bctl->dlci = flags->dlci;
- bctl->length = chan->transmit_length+chan->fr_header_len;
- sdla_poke(&card->hw,
- fr_send_hdr(card,bctl->dlci,bctl->offset),
- chan->delay_skb->data,
- chan->delay_skb->len);
- bctl->flag = 0xC0;
-
- ++chan->ifstats.tx_packets;
- ++card->wandev.stats.tx_packets;
- chan->ifstats.tx_bytes += chan->transmit_length;
- card->wandev.stats.tx_bytes += chan->transmit_length;
-
- /* We must free an sk buffer, which we used
- * for delayed transmission; Otherwise, the sock
- * will run out of memory */
- dev_kfree_skb_any(chan->delay_skb);
-
- chan->delay_skb = NULL;
- chan->transmit_length = 0;
-
- dev->trans_start = jiffies;
-
- if (netif_queue_stopped(dev)){
- /* If using API, than wakeup socket BH handler */
- if (chan->common.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- }
-
-end_of_tx_intr:
-
- /* if any other interfaces have transmit interrupts pending,
- * do not disable the global transmit interrupt */
- if(!(-- card->u.f.tx_interrupts_pending))
- flags->imask &= ~FR_INTR_TXRDY;
-
-
-}
-
-
-/*============================================================================
- * timer_intr: Timer interrupt handler.
- *
- * Rationale:
- * All commans must be executed within the timer
- * interrupt since no two commands should execute
- * at the same time.
- *
- * Description:
- * The timer interrupt is used to:
- * 1. Processing udp calls from 'fpipemon'.
- * 2. Processing update calls from /proc file system
- * 3. Reading board-level statistics for
- * updating the proc file system.
- * 4. Sending inverse ARP request packets.
- * 5. Configure a dlci/channel.
- * 6. Unconfigure a dlci/channel. (Node only)
- */
-
-static void timer_intr(sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
-
- /* UDP Debuging: fpipemon call */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UDP) {
- if(card->u.f.udp_type == UDP_FPIPE_TYPE) {
- if(process_udp_mgmt_pkt(card)) {
- card->u.f.timer_int_enabled &=
- ~TMR_INT_ENABLED_UDP;
- }
- }
- }
-
- /* /proc update call : triggered from update() */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
- fr_get_err_stats(card);
- fr_get_stats(card);
- card->u.f.update_comms_stats = 0;
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE;
- }
-
- /* Update the channel state call. This is call is
- * triggered by if_send() function */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UPDATE_STATE){
- struct net_device *dev;
- if (card->wandev.state == WAN_CONNECTED){
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)){
- fr_channel_t *chan = dev->priv;
- if (chan->common.state != WAN_CONNECTED){
- update_chan_state(dev);
- }
- }
- }
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE_STATE;
- }
-
- /* configure a dlci/channel */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_CONFIG){
- config_fr(card);
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
- }
-
- /* unconfigure a dlci/channel */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG){
- unconfig_fr(card);
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
- }
-
-
- /* Transmit ARP packets */
- if (card->u.f.timer_int_enabled & TMR_INT_ENABLED_ARP){
- int i=0;
- struct net_device *dev;
-
- if (card->u.f.arp_dev == NULL)
- card->u.f.arp_dev = card->wandev.dev;
-
- dev = card->u.f.arp_dev;
-
- for (;;){
-
- fr_channel_t *chan = dev->priv;
-
- /* If the interface is brought down cancel sending In-ARPs */
- if (!(dev->flags&IFF_UP)){
- clear_bit(0,&chan->inarp_ready);
- }
-
- if (test_bit(0,&chan->inarp_ready)){
-
- if (check_tx_status(card,dev)){
- set_bit(ARP_CRIT,&card->wandev.critical);
- break;
- }
-
- if (!send_inarp_request(card,dev)){
- trigger_fr_arp(dev);
- chan->inarp_tick = jiffies;
- }
-
- clear_bit(0,&chan->inarp_ready);
- dev = move_dev_to_next(card,dev);
- break;
- }
- dev = move_dev_to_next(card,dev);
-
- if (++i == card->wandev.new_if_cnt){
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_ARP;
- break;
- }
- }
- card->u.f.arp_dev = dev;
- }
-
- if(!card->u.f.timer_int_enabled)
- flags->imask &= ~FR_INTR_TIMER;
-}
-
-
-/*============================================================================
- * spur_intr: Spurious interrupt handler.
- *
- * Description:
- * We don't know this interrupt.
- * Print a warning.
- */
-
-static void spur_intr (sdla_t* card)
-{
- if (net_ratelimit()){
- printk(KERN_INFO "%s: spurious interrupt!\n", card->devname);
- }
-}
-
-
-//FIXME: Fix the IPX in next version
-/*===========================================================================
- * Return 0 for non-IPXWAN packet
- * 1 for IPXWAN packet or IPX is not enabled!
- * FIXME: Use a IPX structure here not offsets
- */
-static int handle_IPXWAN(unsigned char *sendpacket,
- char *devname, unsigned char enable_IPX,
- unsigned long network_number)
-{
- int i;
-
- if( sendpacket[1] == 0x00 && sendpacket[2] == 0x80 &&
- sendpacket[6] == 0x81 && sendpacket[7] == 0x37) {
-
- /* It's an IPX packet */
- if (!enable_IPX){
- /* Return 1 so we don't pass it up the stack. */
- //FIXME: Take this out when IPX is fixed
- if (net_ratelimit()){
- printk (KERN_INFO
- "%s: WARNING: Unsupported IPX packet received and dropped\n",
- devname);
- }
- return 1;
- }
- } else {
- /* It's not IPX so return and pass it up the stack. */
- return 0;
- }
-
- if( sendpacket[24] == 0x90 && sendpacket[25] == 0x04){
- /* It's IPXWAN */
-
- if( sendpacket[10] == 0x02 && sendpacket[42] == 0x00){
-
- /* It's a timer request packet */
- printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",
- devname);
-
- /* Go through the routing options and answer no to every
- * option except Unnumbered RIP/SAP
- */
- for(i = 49; sendpacket[i] == 0x00; i += 5){
- /* 0x02 is the option for Unnumbered RIP/SAP */
- if( sendpacket[i + 4] != 0x02){
- sendpacket[i + 1] = 0;
- }
- }
-
- /* Skip over the extended Node ID option */
- if( sendpacket[i] == 0x04 ){
- i += 8;
- }
-
- /* We also want to turn off all header compression opt.
- */
- for(; sendpacket[i] == 0x80 ;){
- sendpacket[i + 1] = 0;
- i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
- }
-
- /* Set the packet type to timer response */
- sendpacket[42] = 0x01;
-
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",
- devname);
-
- } else if( sendpacket[42] == 0x02 ){
-
- /* This is an information request packet */
- printk(KERN_INFO
- "%s: Received IPXWAN Information Request packet\n",
- devname);
-
- /* Set the packet type to information response */
- sendpacket[42] = 0x03;
-
- /* Set the router name */
- sendpacket[59] = 'F';
- sendpacket[60] = 'P';
- sendpacket[61] = 'I';
- sendpacket[62] = 'P';
- sendpacket[63] = 'E';
- sendpacket[64] = '-';
- sendpacket[65] = CVHexToAscii(network_number >> 28);
- sendpacket[66] = CVHexToAscii((network_number & 0x0F000000)>> 24);
- sendpacket[67] = CVHexToAscii((network_number & 0x00F00000)>> 20);
- sendpacket[68] = CVHexToAscii((network_number & 0x000F0000)>> 16);
- sendpacket[69] = CVHexToAscii((network_number & 0x0000F000)>> 12);
- sendpacket[70] = CVHexToAscii((network_number & 0x00000F00)>> 8);
- sendpacket[71] = CVHexToAscii((network_number & 0x000000F0)>> 4);
- sendpacket[72] = CVHexToAscii(network_number & 0x0000000F);
- for(i = 73; i < 107; i+= 1)
- {
- sendpacket[i] = 0;
- }
-
- printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",
- devname);
- } else {
-
- printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
- return 0;
- }
-
- /* Set the WNodeID to our network address */
- sendpacket[43] = (unsigned char)(network_number >> 24);
- sendpacket[44] = (unsigned char)((network_number & 0x00FF0000) >> 16);
- sendpacket[45] = (unsigned char)((network_number & 0x0000FF00) >> 8);
- sendpacket[46] = (unsigned char)(network_number & 0x000000FF);
-
- return 1;
- }
-
- /* If we get here, it's an IPX-data packet so it'll get passed up the
- * stack.
- * switch the network numbers
- */
- switch_net_numbers(sendpacket, network_number ,1);
- return 0;
-}
-/*============================================================================
- * process_route
- *
- * Rationale:
- * If the interface goes down, or we receive an ARP request,
- * we have to change the network interface ip addresses.
- * This cannot be done within the interrupt.
- *
- * Description:
- *
- * This routine is called as a polling routine to dynamically
- * add/delete routes negotiated by inverse ARP. It is in this
- * "task" because we don't want routes to be added while in
- * interrupt context.
- *
- * Usage:
- * This function is called by fr_poll() polling funtion.
- */
-
-static void process_route(struct net_device *dev)
-{
- fr_channel_t *chan = dev->priv;
- sdla_t *card = chan->card;
-
- struct ifreq if_info;
- struct sockaddr_in *if_data;
- mm_segment_t fs = get_fs();
- u32 ip_tmp;
- int err;
-
-
- switch(chan->route_flag){
-
- case ADD_ROUTE:
-
- /* Set remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- set_fs(get_ds()); /* get user space block */
-
- if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data->sin_addr.s_addr = chan->ip_remote;
- if_data->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
- if (err) {
- printk(KERN_INFO
- "%s: Route Add failed. Error: %d\n",
- card->devname,err);
- printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
- chan->name, NIPQUAD(chan->ip_remote));
-
- }else {
- printk(KERN_INFO "%s: Route Added Successfully: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(chan->ip_remote));
- chan->route_flag = ROUTE_ADDED;
- }
- break;
-
- case REMOVE_ROUTE:
-
- /* Set remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- ip_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- set_fs(get_ds()); /* get user space block */
-
- if_data = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data->sin_addr.s_addr = 0;
- if_data->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs);
-
- if (err) {
- printk(KERN_INFO
- "%s: Deleting of route failed. Error: %d\n",
- card->devname,err);
- printk(KERN_INFO "%s: Address: %u.%u.%u.%u\n",
- dev->name,NIPQUAD(chan->ip_remote) );
-
- } else {
- printk(KERN_INFO "%s: Route Removed Sucessfuly: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ip_tmp));
- chan->route_flag = NO_ROUTE;
- }
- break;
-
- } /* Case Statement */
-
-}
-
-
-
-/****** Frame Relay Firmware-Specific Functions *****************************/
-
-/*============================================================================
- * Read firmware code version.
- * o fill string str with firmware version info.
- */
-static int fr_read_version (sdla_t* card, char* str)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_READ_CODE_VERSION;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err && str) {
- int len = mbox->cmd.length;
- memcpy(str, mbox->data, len);
- str[len] = '\0';
- }
- return err;
-}
-
-/*============================================================================
- * Set global configuration.
- */
-static int fr_configure (sdla_t* card, fr_conf_t *conf)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int dlci_num = card->u.f.dlci_num;
- int err, i;
-
- do
- {
- memcpy(mbox->data, conf, sizeof(fr_conf_t));
-
- if (dlci_num) for (i = 0; i < dlci_num; ++i)
- ((fr_conf_t*)mbox->data)->dlci[i] =
- card->u.f.node_dlci[i];
-
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.length =
- sizeof(fr_conf_t) + dlci_num * sizeof(short);
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- /*NC Oct 12 2000 */
- if (err != CMD_OK){
- printk(KERN_ERR "%s: Frame Relay Configuration Failed: rc=0x%x\n",
- card->devname,err);
- }
-
- return err;
-}
-
-/*============================================================================
- * Set DLCI configuration.
- */
-static int fr_dlci_configure (sdla_t* card, fr_dlc_conf_t *conf, unsigned dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memcpy(mbox->data, conf, sizeof(fr_dlc_conf_t));
- mbox->cmd.dlci = (unsigned short) dlci;
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.length = sizeof(fr_dlc_conf_t);
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- return err;
-}
-/*============================================================================
- * Set interrupt mode.
- */
-static int fr_set_intr_mode (sdla_t* card, unsigned mode, unsigned mtu,
- unsigned short timeout)
-{
- fr_mbox_t* mbox = card->mbox;
- fr508_intr_ctl_t* ictl = (void*)mbox->data;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(ictl, 0, sizeof(fr508_intr_ctl_t));
- ictl->mode = mode;
- ictl->tx_len = mtu;
- ictl->irq = card->hw.irq;
-
- /* indicate timeout on timer */
- if (mode & 0x20) ictl->timeout = timeout;
-
- mbox->cmd.length = sizeof(fr508_intr_ctl_t);
- mbox->cmd.command = FR_SET_INTR_MODE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Enable communications.
- */
-static int fr_comm_enable (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_COMM_ENABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * fr_comm_disable
- *
- * Warning: This functin is called by the shutdown() procedure. It is void
- * since dev->priv are has already been deallocated and no
- * error checking is possible using fr_event() function.
- */
-static void fr_comm_disable (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do {
- mbox->cmd.command = FR_SET_MODEM_STATUS;
- mbox->cmd.length = 1;
- mbox->data[0] = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- retry = MAX_CMD_RETRY;
-
- do
- {
- mbox->cmd.command = FR_COMM_DISABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry--);
-
- return;
-}
-
-
-
-/*============================================================================
- * Get communications error statistics.
- */
-static int fr_get_err_stats (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
-
- do
- {
- mbox->cmd.command = FR_READ_ERROR_STATS;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_comm_stat_t* stats = (void*)mbox->data;
- card->wandev.stats.rx_over_errors = stats->rx_overruns;
- card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
- card->wandev.stats.rx_missed_errors = stats->rx_aborts;
- card->wandev.stats.rx_length_errors = stats->rx_too_long;
- card->wandev.stats.tx_aborted_errors = stats->tx_aborts;
-
- }
-
- return err;
-}
-
-/*============================================================================
- * Get statistics.
- */
-static int fr_get_stats (sdla_t* card)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
-
- do
- {
- mbox->cmd.command = FR_READ_STATISTICS;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_link_stat_t* stats = (void*)mbox->data;
- card->wandev.stats.rx_frame_errors = stats->rx_bad_format;
- card->wandev.stats.rx_dropped =
- stats->rx_dropped + stats->rx_dropped2;
- }
-
- return err;
-}
-
-/*============================================================================
- * Add DLCI(s) (Access Node only!).
- * This routine will perform the ADD_DLCIs command for the specified DLCI.
- */
-static int fr_add_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_ADD_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Activate DLCI(s) (Access Node only!).
- * This routine will perform the ACTIVATE_DLCIs command with a DLCI number.
- */
-static int fr_activate_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_ACTIVATE_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-/*============================================================================
- * Delete DLCI(s) (Access Node only!).
- * This routine will perform the DELETE_DLCIs command with a DLCI number.
- */
-static int fr_delete_dlci (sdla_t* card, int dlci)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- unsigned short* dlci_list = (void*)mbox->data;
-
- mbox->cmd.length = sizeof(short);
- dlci_list[0] = dlci;
- mbox->cmd.command = FR_DELETE_DLCI;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-
-
-/*============================================================================
- * Issue in-channel signalling frame.
- */
-static int fr_issue_isf (sdla_t* card, int isf)
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->data[0] = isf;
- mbox->cmd.length = 1;
- mbox->cmd.command = FR_ISSUE_IS_FRAME;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- return err;
-}
-
-
-static unsigned int fr_send_hdr (sdla_t*card, int dlci, unsigned int offset)
-{
- struct net_device *dev = find_channel(card,dlci);
- fr_channel_t *chan;
-
- if (!dev || !(chan=dev->priv))
- return offset;
-
- if (chan->fr_header_len){
- sdla_poke(&card->hw, offset, chan->fr_header, chan->fr_header_len);
- }
-
- return offset+chan->fr_header_len;
-}
-
-/*============================================================================
- * Send a frame on a selected DLCI.
- */
-static int fr_send_data_header (sdla_t* card, int dlci, unsigned char attr, int len,
- void *buf, unsigned char hdr_len)
-{
- fr_mbox_t* mbox = card->mbox + 0x800;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.dlci = dlci;
- mbox->cmd.attr = attr;
- mbox->cmd.length = len+hdr_len;
- mbox->cmd.command = FR_WRITE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_tx_buf_ctl_t* frbuf;
-
- if(card->hw.type == SDLA_S514)
- frbuf = (void*)(*(unsigned long*)mbox->data +
- card->hw.dpmbase);
- else
- frbuf = (void*)(*(unsigned long*)mbox->data -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- sdla_poke(&card->hw, fr_send_hdr(card,dlci,frbuf->offset), buf, len);
- frbuf->flag = 0x01;
- }
-
- return err;
-}
-
-static int fr_send (sdla_t* card, int dlci, unsigned char attr, int len,
- void *buf)
-{
- fr_mbox_t* mbox = card->mbox + 0x800;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.dlci = dlci;
- mbox->cmd.attr = attr;
- mbox->cmd.length = len;
- mbox->cmd.command = FR_WRITE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
- fr_tx_buf_ctl_t* frbuf;
-
- if(card->hw.type == SDLA_S514)
- frbuf = (void*)(*(unsigned long*)mbox->data +
- card->hw.dpmbase);
- else
- frbuf = (void*)(*(unsigned long*)mbox->data -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- sdla_poke(&card->hw, frbuf->offset, buf, len);
- frbuf->flag = 0x01;
- }
-
- return err;
-}
-
-
-/****** Firmware Asynchronous Event Handlers ********************************/
-
-/*============================================================================
- * Main asyncronous event/error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int fr_event (sdla_t *card, int event, fr_mbox_t* mbox)
-{
- fr508_flags_t* flags = card->flags;
- char *ptr = &flags->iflag;
- int i;
-
- switch (event) {
-
- case FRRES_MODEM_FAILURE:
- return fr_modem_failure(card, mbox);
-
- case FRRES_CHANNEL_DOWN: {
- struct net_device *dev;
-
- /* Remove all routes from associated DLCI's */
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan = dev->priv;
- if (chan->route_flag == ROUTE_ADDED) {
- chan->route_flag = REMOVE_ROUTE;
- }
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- /* If the link becomes disconnected then,
- * all channels will be disconnected
- * as well.
- */
- set_chan_state(dev,WAN_DISCONNECTED);
- }
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
- return 1;
- }
-
- case FRRES_CHANNEL_UP: {
- struct net_device *dev;
-
- /* FIXME: Only startup devices that are on the list */
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
-
- set_chan_state(dev,WAN_CONNECTED);
- }
-
- wanpipe_set_state(card, WAN_CONNECTED);
- return 1;
- }
-
- case FRRES_DLCI_CHANGE:
- return fr_dlci_change(card, mbox);
-
- case FRRES_DLCI_MISMATCH:
- printk(KERN_INFO "%s: DLCI list mismatch!\n",
- card->devname);
- return 1;
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, mbox->cmd.command);
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x18 + i));
- printk(KERN_INFO "\n");
-
- break;
-
- case FRRES_DLCI_INACTIVE:
- break;
-
- case FRRES_CIR_OVERFLOW:
- break;
-
- case FRRES_BUFFER_OVERFLOW:
- break;
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
- , card->devname, mbox->cmd.command, event);
- }
-
- return 0;
-}
-
-/*============================================================================
- * Handle modem error.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int fr_modem_failure (sdla_t *card, fr_mbox_t* mbox)
-{
- printk(KERN_INFO "%s: physical link down! (modem error 0x%02X)\n",
- card->devname, mbox->data[0]);
-
- switch (mbox->cmd.command){
- case FR_WRITE:
-
- case FR_READ:
- return 0;
- }
-
- return 1;
-}
-
-/*============================================================================
- * Handle DLCI status change.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int fr_dlci_change (sdla_t *card, fr_mbox_t* mbox)
-{
- dlci_status_t* status = (void*)mbox->data;
- int cnt = mbox->cmd.length / sizeof(dlci_status_t);
- fr_channel_t *chan;
- struct net_device* dev2;
-
-
- for (; cnt; --cnt, ++status) {
-
- unsigned short dlci= status->dlci;
- struct net_device* dev = find_channel(card, dlci);
-
- if (dev == NULL){
- printk(KERN_INFO
- "%s: CPE contains unconfigured DLCI= %d\n",
- card->devname, dlci);
-
- printk(KERN_INFO
- "%s: unconfigured DLCI %d reported by network\n"
- , card->devname, dlci);
-
- }else{
- if (status->state == FR_LINK_INOPER) {
- printk(KERN_INFO
- "%s: DLCI %u is inactive!\n",
- card->devname, dlci);
-
- if (dev && netif_running(dev))
- set_chan_state(dev, WAN_DISCONNECTED);
- }
-
- if (status->state & FR_DLCI_DELETED) {
-
- printk(KERN_INFO
- "%s: DLCI %u has been deleted!\n",
- card->devname, dlci);
-
- if (dev && netif_running(dev)){
-
- fr_channel_t *chan = dev->priv;
-
- if (chan->route_flag == ROUTE_ADDED) {
- chan->route_flag = REMOVE_ROUTE;
- /* The state change will trigger
- * the fr polling routine */
- }
-
- if (chan->inarp == INARP_CONFIGURED) {
- chan->inarp = INARP_REQUEST;
- }
-
- set_chan_state(dev, WAN_DISCONNECTED);
- }
-
- } else if (status->state & FR_DLCI_ACTIVE) {
-
- chan = dev->priv;
-
- /* This flag is used for configuring specific
- DLCI(s) when they become active.
- */
- chan->dlci_configured = DLCI_CONFIG_PENDING;
-
- set_chan_state(dev, WAN_CONNECTED);
-
- }
- }
- }
-
- for (dev2 = card->wandev.dev; dev2;
- dev2 = *((struct net_device **)dev2->priv)){
-
- chan = dev2->priv;
-
- if (chan->dlci_configured == DLCI_CONFIG_PENDING) {
- if (fr_init_dlci(card, chan)){
- return 1;
- }
- }
-
- }
- return 1;
-}
-
-
-static int fr_init_dlci (sdla_t *card, fr_channel_t *chan)
-{
- fr_dlc_conf_t cfg;
-
- memset(&cfg, 0, sizeof(cfg));
-
- if ( chan->cir_status == CIR_DISABLED) {
-
- cfg.cir_fwd = cfg.cir_bwd = 16;
- cfg.bc_fwd = cfg.bc_bwd = 16;
- cfg.conf_flags = 0x0001;
-
- }else if (chan->cir_status == CIR_ENABLED) {
-
- cfg.cir_fwd = cfg.cir_bwd = chan->cir;
- cfg.bc_fwd = cfg.bc_bwd = chan->bc;
- cfg.be_fwd = cfg.be_bwd = chan->be;
- cfg.conf_flags = 0x0000;
- }
-
- if (fr_dlci_configure( card, &cfg , chan->dlci)){
- printk(KERN_INFO
- "%s: DLCI Configure failed for %d\n",
- card->devname, chan->dlci);
- return 1;
- }
-
- chan->dlci_configured = DLCI_CONFIGURED;
-
- /* Read the interface byte mapping into the channel
- * structure.
- */
- read_DLCI_IB_mapping( card, chan );
-
- return 0;
-}
-/******* Miscellaneous ******************************************************/
-
-/*============================================================================
- * Update channel state.
- */
-static int update_chan_state(struct net_device* dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- mbox->cmd.command = FR_LIST_ACTIVE_DLCI;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if (!err) {
-
- unsigned short* list = (void*)mbox->data;
- int cnt = mbox->cmd.length / sizeof(short);
-
- err=1;
-
- for (; cnt; --cnt, ++list) {
-
- if (*list == chan->dlci) {
- set_chan_state(dev, WAN_CONNECTED);
-
-
- /* May 23 2000. NC
- * When a dlci is added or restarted,
- * the dlci_int_interface pointer must
- * be reinitialized. */
- if (!chan->dlci_int_interface){
- err=fr_init_dlci (card,chan);
- }
- break;
- }
- }
- }
-
- return err;
-}
-
-/*============================================================================
- * Set channel state.
- */
-static void set_chan_state(struct net_device* dev, int state)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- if (chan->common.state != state) {
-
- switch (state) {
-
- case WAN_CONNECTED:
- printk(KERN_INFO
- "%s: Interface %s: DLCI %d connected\n",
- card->devname, dev->name, chan->dlci);
-
- /* If the interface was previoulsy down,
- * bring it up, since the channel is active */
-
- trigger_fr_poll (dev);
- trigger_fr_arp (dev);
- break;
-
- case WAN_CONNECTING:
- printk(KERN_INFO
- "%s: Interface %s: DLCI %d connecting\n",
- card->devname, dev->name, chan->dlci);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO
- "%s: Interface %s: DLCI %d disconnected!\n",
- card->devname, dev->name, chan->dlci);
-
- /* If the interface is up, bring it down,
- * since the channel is now disconnected */
- trigger_fr_poll (dev);
- break;
- }
-
- chan->common.state = state;
- }
-
- chan->state_tick = jiffies;
-}
-
-/*============================================================================
- * Find network device by its channel number.
- *
- * We need this critical flag because we change
- * the dlci_to_dev_map outside the interrupt.
- *
- * NOTE: del_if() functions updates this array, it uses
- * the spin locks to avoid corruption.
- */
-static struct net_device* find_channel(sdla_t* card, unsigned dlci)
-{
- if(dlci > HIGHEST_VALID_DLCI)
- return NULL;
-
- return(card->u.f.dlci_to_dev_map[dlci]);
-}
-
-/*============================================================================
- * Check to see if a frame can be sent. If no transmit buffers available,
- * enable transmit interrupts.
- *
- * Return: 1 - Tx buffer(s) available
- * 0 - no buffers available
- */
-static int is_tx_ready (sdla_t* card, fr_channel_t* chan)
-{
- unsigned char sb;
-
- if(card->hw.type == SDLA_S514)
- return 1;
-
- sb = inb(card->hw.port);
- if (sb & 0x02)
- return 1;
-
- return 0;
-}
-
-/*============================================================================
- * Convert decimal string to unsigned integer.
- * If len != 0 then only 'len' characters of the string are converted.
- */
-static unsigned int dec_to_uint (unsigned char* str, int len)
-{
- unsigned val;
-
- if (!len)
- len = strlen(str);
-
- for (val = 0; len && isdigit(*str); ++str, --len)
- val = (val * 10) + (*str - (unsigned)'0');
-
- return val;
-}
-
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, int dlci)
-{
- int udp_pkt_stored = 0;
-
- struct net_device *dev = find_channel(card, dlci);
- fr_channel_t *chan;
-
- if (!dev || !(chan=dev->priv))
- return 1;
-
- if(!card->u.f.udp_pkt_lgth && (skb->len <= MAX_LGTH_UDP_MGNT_PKT)){
- card->u.f.udp_pkt_lgth = skb->len + chan->fr_header_len;
- card->u.f.udp_type = udp_type;
- card->u.f.udp_pkt_src = udp_pkt_src;
- card->u.f.udp_dlci = dlci;
- memcpy(card->u.f.udp_pkt_data, skb->data, skb->len);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UDP;
- udp_pkt_stored = 1;
-
- }else{
- printk(KERN_INFO "ERROR: UDP packet not stored for DLCI %d\n",
- dlci);
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-/*==============================================================================
- * Process UDP call of type FPIPE8ND
- */
-static int process_udp_mgmt_pkt(sdla_t* card)
-{
-
- int c_retry = MAX_CMD_RETRY;
- unsigned char *buf;
- unsigned char frames;
- unsigned int len;
- unsigned short buffer_length;
- struct sk_buff *new_skb;
- fr_mbox_t* mbox = card->mbox;
- int err;
- struct timeval tv;
- int udp_mgmt_req_valid = 1;
- struct net_device* dev;
- fr_channel_t* chan;
- fr_udp_pkt_t *fr_udp_pkt;
- unsigned short num_trc_els;
- fr_trc_el_t* ptr_trc_el;
- fr_trc_el_t trc_el;
- fpipemon_trc_t* fpipemon_trc;
-
- char udp_pkt_src = card->u.f.udp_pkt_src;
- int dlci = card->u.f.udp_dlci;
-
- /* Find network interface for this packet */
- dev = find_channel(card, dlci);
- if (!dev){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
- if ((chan = dev->priv) == NULL){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
-
- /* If the UDP packet is from the network, we are going to have to
- transmit a response. Before doing so, we must check to see that
- we are not currently transmitting a frame (in 'if_send()') and
- that we are not already in a 'delayed transmit' state.
- */
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- if (check_tx_status(card,dev)){
- card->u.f.udp_pkt_lgth = 0;
- return 1;
- }
- }
-
- fr_udp_pkt = (fr_udp_pkt_t *)card->u.f.udp_pkt_data;
-
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- switch(fr_udp_pkt->cblock.command) {
-
- case FR_READ_MODEM_STATUS:
- case FR_READ_STATUS:
- case FPIPE_ROUTER_UP_TIME:
- case FR_READ_ERROR_STATS:
- case FPIPE_DRIVER_STAT_GEN:
- case FR_READ_STATISTICS:
- case FR_READ_ADD_DLC_STATS:
- case FR_READ_CONFIG:
- case FR_READ_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
- /* set length to 0 */
- fr_udp_pkt->cblock.length = 0;
- /* set return code */
- fr_udp_pkt->cblock.result = 0xCD;
-
- chan->drvstats_gen.UDP_PIPE_mgmt_direction_err ++;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,fr_udp_pkt->cblock.command);
- }
-
- } else {
-
- switch(fr_udp_pkt->cblock.command) {
-
- case FPIPE_ENABLE_TRACING:
- if(!card->TracingEnabled) {
- do {
- mbox->cmd.command = FR_SET_TRACE_CONFIG;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = fr_udp_pkt->data[0] |
- RESET_TRC;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err,
- mbox));
-
- if(err) {
- card->TracingEnabled = 0;
- /* set the return code */
- fr_udp_pkt->cblock.result =
- mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
-
- sdla_peek(&card->hw, NO_TRC_ELEMENTS_OFF,
- &num_trc_els, 2);
- sdla_peek(&card->hw, BASE_TRC_ELEMENTS_OFF,
- &card->u.f.trc_el_base, 4);
- card->u.f.curr_trc_el = card->u.f.trc_el_base;
- card->u.f.trc_el_last = card->u.f.curr_trc_el +
- ((num_trc_els - 1) *
- sizeof(fr_trc_el_t));
-
- /* Calculate the maximum trace data area in */
- /* the UDP packet */
- card->u.f.trc_bfr_space=(MAX_LGTH_UDP_MGNT_PKT -
- //sizeof(fr_encap_hdr_t) -
- sizeof(ip_pkt_t) -
- sizeof(udp_pkt_t) -
- sizeof(wp_mgmt_t) -
- sizeof(cblock_t));
-
- /* set return code */
- fr_udp_pkt->cblock.result = 0;
-
- } else {
- /* set return code to line trace already
- enabled */
- fr_udp_pkt->cblock.result = 1;
- }
-
- mbox->cmd.length = 0;
- card->TracingEnabled = 1;
- break;
-
-
- case FPIPE_DISABLE_TRACING:
- if(card->TracingEnabled) {
-
- do {
- mbox->cmd.command = FR_SET_TRACE_CONFIG;
- mbox->cmd.length = 1;
- mbox->cmd.dlci = 0x00;
- mbox->data[0] = ~ACTIVATE_TRC;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err, mbox));
- }
-
- /* set return code */
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 0;
- break;
-
- case FPIPE_GET_TRACE_INFO:
-
- /* Line trace cannot be performed on the 502 */
- if(!card->TracingEnabled) {
- /* set return code */
- fr_udp_pkt->cblock.result = 1;
- mbox->cmd.length = 0;
- break;
- }
-
- ptr_trc_el = (void *)card->u.f.curr_trc_el;
-
- buffer_length = 0;
- fr_udp_pkt->data[0x00] = 0x00;
-
- for(frames = 0; frames < MAX_FRMS_TRACED; frames ++) {
-
- sdla_peek(&card->hw, (unsigned long)ptr_trc_el,
- (void *)&trc_el.flag,
- sizeof(fr_trc_el_t));
- if(trc_el.flag == 0x00) {
- break;
- }
- if((card->u.f.trc_bfr_space - buffer_length)
- < sizeof(fpipemon_trc_hdr_t)) {
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
- break;
- }
-
- fpipemon_trc =
- (fpipemon_trc_t *)&fr_udp_pkt->data[buffer_length];
- fpipemon_trc->fpipemon_trc_hdr.status =
- trc_el.attr;
- fpipemon_trc->fpipemon_trc_hdr.tmstamp =
- trc_el.tmstamp;
- fpipemon_trc->fpipemon_trc_hdr.length =
- trc_el.length;
-
- if(!trc_el.offset || !trc_el.length) {
-
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
-
- }else if((trc_el.length + sizeof(fpipemon_trc_hdr_t) + 1) >
- (card->u.f.trc_bfr_space - buffer_length)){
-
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x00;
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
-
- }else {
- fpipemon_trc->fpipemon_trc_hdr.data_passed = 0x01;
- sdla_peek(&card->hw, trc_el.offset,
- fpipemon_trc->data,
- trc_el.length);
- }
-
- trc_el.flag = 0x00;
- sdla_poke(&card->hw, (unsigned long)ptr_trc_el,
- &trc_el.flag, 1);
-
- ptr_trc_el ++;
- if((void *)ptr_trc_el > card->u.f.trc_el_last)
- ptr_trc_el = (void*)card->u.f.trc_el_base;
-
- buffer_length += sizeof(fpipemon_trc_hdr_t);
- if(fpipemon_trc->fpipemon_trc_hdr.data_passed) {
- buffer_length += trc_el.length;
- }
-
- if(fr_udp_pkt->data[0x00] & MORE_TRC_DATA) {
- break;
- }
- }
-
- if(frames == MAX_FRMS_TRACED) {
- fr_udp_pkt->data[0x00] |= MORE_TRC_DATA;
- }
-
- card->u.f.curr_trc_el = (void *)ptr_trc_el;
-
- /* set the total number of frames passed */
- fr_udp_pkt->data[0x00] |=
- ((frames << 1) & (MAX_FRMS_TRACED << 1));
-
- /* set the data length and return code */
- fr_udp_pkt->cblock.length = mbox->cmd.length = buffer_length;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_FT1_READ_STATUS:
- sdla_peek(&card->hw, 0xF020,
- &fr_udp_pkt->data[0x00] , 2);
- fr_udp_pkt->cblock.length = mbox->cmd.length = 2;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_FLUSH_DRIVER_STATS:
- init_chan_statistics(chan);
- init_global_statistics(card);
- mbox->cmd.length = 0;
- break;
-
- case FPIPE_ROUTER_UP_TIME:
- do_gettimeofday(&tv);
- chan->router_up_time = tv.tv_sec -
- chan->router_start_time;
- *(unsigned long *)&fr_udp_pkt->data =
- chan->router_up_time;
- mbox->cmd.length = fr_udp_pkt->cblock.length = 4;
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_IFSEND:
- memcpy(fr_udp_pkt->data,
- &chan->drvstats_if_send.if_send_entry,
- sizeof(if_send_stat_t));
- mbox->cmd.length = fr_udp_pkt->cblock.length =sizeof(if_send_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_INTR:
-
- memcpy(fr_udp_pkt->data,
- &card->statistics.isr_entry,
- sizeof(global_stats_t));
-
- memcpy(&fr_udp_pkt->data[sizeof(global_stats_t)],
- &chan->drvstats_rx_intr.rx_intr_no_socket,
- sizeof(rx_intr_stat_t));
-
- mbox->cmd.length = fr_udp_pkt->cblock.length =
- sizeof(global_stats_t) +
- sizeof(rx_intr_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
- case FPIPE_DRIVER_STAT_GEN:
- memcpy(fr_udp_pkt->data,
- &chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err,
- sizeof(pipe_mgmt_stat_t));
-
- memcpy(&fr_udp_pkt->data[sizeof(pipe_mgmt_stat_t)],
- &card->statistics, sizeof(global_stats_t));
-
- mbox->cmd.length = fr_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- fr_udp_pkt->cblock.result = 0;
- break;
-
-
- case FR_FT1_STATUS_CTRL:
- if(fr_udp_pkt->data[0] == 1) {
- if(rCount++ != 0 ){
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if(fr_udp_pkt->data[0] == 0) {
- if( --rCount != 0) {
- fr_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- goto udp_mgmt_dflt;
-
-
- default:
-udp_mgmt_dflt:
- do {
- memcpy(&mbox->cmd,
- &fr_udp_pkt->cblock.command,
- sizeof(fr_cmd_t));
- if(mbox->cmd.length) {
- memcpy(&mbox->data,
- (char *)fr_udp_pkt->data,
- mbox->cmd.length);
- }
-
- err = sdla_exec(mbox) ? mbox->cmd.result :
- CMD_TIMEOUT;
- } while (err && c_retry-- && fr_event(card, err, mbox));
-
- if(!err)
- chan->drvstats_gen.
- UDP_PIPE_mgmt_adptr_cmnd_OK ++;
- else
- chan->drvstats_gen.
- UDP_PIPE_mgmt_adptr_cmnd_timeout ++;
-
- /* copy the result back to our buffer */
- memcpy(&fr_udp_pkt->cblock.command,
- &mbox->cmd, sizeof(fr_cmd_t));
-
- if(mbox->cmd.length) {
- memcpy(&fr_udp_pkt->data,
- &mbox->data, mbox->cmd.length);
- }
- }
- }
-
- /* Fill UDP TTL */
- fr_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
- len = reply_udp(card->u.f.udp_pkt_data, mbox->cmd.length);
-
- if(udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- chan->fr_header_len=2;
- chan->fr_header[0]=Q922_UI;
- chan->fr_header[1]=NLPID_IP;
-
- err = fr_send_data_header(card, dlci, 0, len,
- card->u.f.udp_pkt_data,chan->fr_header_len);
- if (err){
- chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_passed ++;
- }else{
- chan->drvstats_gen.UDP_PIPE_mgmt_adptr_send_failed ++;
- }
-
- } else {
- /* Allocate socket buffer */
- if((new_skb = dev_alloc_skb(len)) != NULL) {
-
- /* copy data into new_skb */
- buf = skb_put(new_skb, len);
- memcpy(buf, card->u.f.udp_pkt_data, len);
-
- chan->drvstats_gen.
- UDP_PIPE_mgmt_passed_to_stack ++;
- new_skb->dev = dev;
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
-
- } else {
- chan->drvstats_gen.UDP_PIPE_mgmt_no_socket ++;
- printk(KERN_INFO
- "%s: UDP mgmt cmnd, no socket buffers available!\n",
- card->devname);
- }
- }
-
- card->u.f.udp_pkt_lgth = 0;
-
- return 1;
-}
-
-/*==============================================================================
- * Send Inverse ARP Request
- */
-
-int send_inarp_request(sdla_t *card, struct net_device *dev)
-{
- int err=0;
-
- arphdr_1490_t *ArpPacket;
- arphdr_fr_t *arphdr;
- fr_channel_t *chan = dev->priv;
- struct in_device *in_dev;
-
- in_dev = dev->ip_ptr;
-
- if(in_dev != NULL ) {
-
- ArpPacket = kmalloc(sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t), GFP_ATOMIC);
- /* SNAP Header indicating ARP */
- ArpPacket->control = 0x03;
- ArpPacket->pad = 0x00;
- ArpPacket->NLPID = 0x80;
- ArpPacket->OUI[0] = 0;
- ArpPacket->OUI[1] = 0;
- ArpPacket->OUI[2] = 0;
- ArpPacket->PID = 0x0608;
-
- arphdr = (arphdr_fr_t *)(ArpPacket + 1); // Go to ARP Packet
-
- /* InARP request */
- arphdr->ar_hrd = 0x0F00; /* Frame Relay HW type */
- arphdr->ar_pro = 0x0008; /* IP Protocol */
- arphdr->ar_hln = 2; /* HW addr length */
- arphdr->ar_pln = 4; /* IP addr length */
- arphdr->ar_op = htons(0x08); /* InARP Request */
- arphdr->ar_sha = 0; /* src HW DLCI - Doesn't matter */
- if(in_dev->ifa_list != NULL)
- arphdr->ar_sip = in_dev->ifa_list->ifa_local; /* Local Address */else
- arphdr->ar_sip = 0;
- arphdr->ar_tha = 0; /* dst HW DLCI - Doesn't matter */
- arphdr->ar_tip = 0; /* Remote Address -- what we want */
-
- err = fr_send(card, chan->dlci, 0, sizeof(arphdr_1490_t) + sizeof(arphdr_fr_t),
- (void *)ArpPacket);
-
- if (!err){
- printk(KERN_INFO "\n%s: Sending InARP request on DLCI %d.\n",
- card->devname, chan->dlci);
- clear_bit(ARP_CRIT,&card->wandev.critical);
- }
-
- kfree(ArpPacket);
- }else{
- printk(KERN_INFO "%s: INARP ERROR: %s doesn't have a local IP address!\n",
- card->devname,dev->name);
- return 1;
- }
-
- return 0;
-}
-
-
-/*==============================================================================
- * Check packet for ARP Type
- */
-
-int is_arp(void *buf)
-{
- arphdr_1490_t *arphdr = (arphdr_1490_t *)buf;
-
- if (arphdr->pad == 0x00 &&
- arphdr->NLPID == 0x80 &&
- arphdr->PID == 0x0608)
- return 1;
- else return 0;
-}
-
-/*==============================================================================
- * Process ARP Packet Type
- */
-
-int process_ARP(arphdr_1490_t *ArpPacket, sdla_t *card, struct net_device* dev)
-{
-
-
- arphdr_fr_t *arphdr = (arphdr_fr_t *)(ArpPacket + 1); /* Skip header */
- fr_rx_buf_ctl_t* frbuf = card->rxmb;
- struct in_device *in_dev;
- fr_channel_t *chan = dev->priv;
-
- /* Before we transmit ARP packet, we must check
- * to see that we are not currently transmitting a
- * frame (in 'if_send()') and that we are not
- * already in a 'delayed transmit' state. */
- if (check_tx_status(card,dev)){
- if (net_ratelimit()){
- printk(KERN_INFO "%s: Disabling comminication to process ARP\n",
- card->devname);
- }
- set_bit(ARP_CRIT,&card->wandev.critical);
- return 0;
- }
-
- in_dev = dev->ip_ptr;
-
- /* Check that IP addresses exist for our network address */
- if (in_dev == NULL || in_dev->ifa_list == NULL)
- return -1;
-
- switch (ntohs(arphdr->ar_op)) {
-
- case 0x08: // Inverse ARP request -- Send Reply, add route.
-
- /* Check for valid Address */
- printk(KERN_INFO "%s: Recvd PtP addr -InArp Req: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(arphdr->ar_sip));
-
-
- /* Check that the network address is the same as ours, only
- * if the netowrk mask is not 255.255.255.255. Otherwise
- * this check would not make sense */
-
- if (in_dev->ifa_list->ifa_mask != 0xFFFFFFFF &&
- (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
- (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)){
- printk(KERN_INFO
- "%s: Invalid PtP address. %u.%u.%u.%u InARP ignored.\n",
- card->devname,NIPQUAD(arphdr->ar_sip));
-
- printk(KERN_INFO "%s: mask %u.%u.%u.%u\n",
- card->devname, NIPQUAD(in_dev->ifa_list->ifa_mask));
- printk(KERN_INFO "%s: local %u.%u.%u.%u\n",
- card->devname,NIPQUAD(in_dev->ifa_list->ifa_local));
- return -1;
- }
-
- if (in_dev->ifa_list->ifa_local == arphdr->ar_sip){
- printk(KERN_INFO
- "%s: Local addr = PtP addr. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- arphdr->ar_op = htons(0x09); /* InARP Reply */
-
- /* Set addresses */
- arphdr->ar_tip = arphdr->ar_sip;
- arphdr->ar_sip = in_dev->ifa_list->ifa_local;
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- fr_send(card, frbuf->dlci, 0, frbuf->length, (void *)ArpPacket);
-
- if (test_bit(ARP_CRIT,&card->wandev.critical)){
- if (net_ratelimit()){
- printk(KERN_INFO "%s: ARP Processed Enabling Communication!\n",
- card->devname);
- }
- }
- clear_bit(ARP_CRIT,&card->wandev.critical);
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- /* Add Route Flag */
- /* The route will be added in the polling routine so
- that it is not interrupt context. */
-
- chan->route_flag = ADD_ROUTE;
- trigger_fr_poll (dev);
-
- break;
-
- case 0x09: // Inverse ARP reply
-
- /* Check for valid Address */
- printk(KERN_INFO "%s: Recvd PtP addr %u.%u.%u.%u -InArp Reply\n",
- card->devname, NIPQUAD(arphdr->ar_sip));
-
-
- /* Compare network addresses, only if network mask
- * is not 255.255.255.255 It would not make sense
- * to perform this test if the mask was all 1's */
-
- if (in_dev->ifa_list->ifa_mask != 0xffffffff &&
- (in_dev->ifa_list->ifa_mask & arphdr->ar_sip) !=
- (in_dev->ifa_list->ifa_mask & in_dev->ifa_list->ifa_local)) {
-
- printk(KERN_INFO "%s: Invalid PtP address. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- /* Make sure that the received IP address is not
- * the same as our own local address */
- if (in_dev->ifa_list->ifa_local == arphdr->ar_sip) {
- printk(KERN_INFO "%s: Local addr = PtP addr. InARP ignored.\n",
- card->devname);
- return -1;
- }
-
- chan->ip_local = in_dev->ifa_list->ifa_local;
- chan->ip_remote = arphdr->ar_sip;
-
- /* Add Route Flag */
- /* The route will be added in the polling routine so
- that it is not interrupt context. */
-
- chan->route_flag = ADD_ROUTE;
- chan->inarp = INARP_CONFIGURED;
- trigger_fr_poll(dev);
-
- break;
- default:
- break; // ARP's and RARP's -- Shouldn't happen.
- }
-
- return 0;
-}
-
-
-/*============================================================
- * trigger_fr_arp
- *
- * Description:
- * Add an fr_arp() task into a arp
- * timer handler for a specific dlci/interface.
- * This will kick the fr_arp() routine
- * within the specified time interval.
- *
- * Usage:
- * This timer is used to send ARP requests at
- * certain time intervals.
- * Called by an interrupt to request an action
- * at a later date.
- */
-
-static void trigger_fr_arp(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- mod_timer(&chan->fr_arp_timer, jiffies + chan->inarp_interval * HZ);
- return;
-}
-
-
-
-/*==============================================================================
- * ARP Request Action
- *
- * This funciton is called by timer interrupt to send an arp request
- * to the remote end.
- */
-
-static void fr_arp (unsigned long data)
-{
- struct net_device *dev = (struct net_device *)data;
- fr_channel_t *chan = dev->priv;
- volatile sdla_t *card = chan->card;
- fr508_flags_t* flags = card->flags;
-
- /* Send ARP packets for all devs' until
- * ARP state changes to CONFIGURED */
-
- if (chan->inarp == INARP_REQUEST &&
- chan->common.state == WAN_CONNECTED &&
- card->wandev.state == WAN_CONNECTED){
- set_bit(0,&chan->inarp_ready);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_ARP;
- flags->imask |= FR_INTR_TIMER;
- }
-
- return;
-}
-
-
-/*==============================================================================
- * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR_
- * TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card )
-{
- fr_mbox_t* mb = card->mbox;
- int err,i;
-
- err = fr_set_intr_mode(card, FR_INTR_READY, card->wandev.mtu, 0 );
-
- if (err == CMD_OK) {
-
- for ( i = 0; i < MAX_INTR_TEST_COUNTER; i++ ) {
- /* Run command READ_CODE_VERSION */
- mb->cmd.length = 0;
- mb->cmd.command = FR_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- fr_event(card, err, mb);
- }
-
- } else {
- return err;
- }
-
- err = fr_set_intr_mode( card, 0, card->wandev.mtu, 0 );
-
- if( err != CMD_OK )
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. FPIPE8ND ?
- */
-static int udp_pkt_type( struct sk_buff *skb, sdla_t* card )
-{
- fr_udp_pkt_t *fr_udp_pkt = (fr_udp_pkt_t *)skb->data;
-
- /* Quick HACK */
-
-
- if((fr_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (fr_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45) &&
- (fr_udp_pkt->udp_pkt.udp_dst_port ==
- ntohs(card->wandev.udp_port)) &&
- (fr_udp_pkt->wp_mgmt.request_reply ==
- UDPMGMT_REQUEST)) {
- if(!strncmp(fr_udp_pkt->wp_mgmt.signature,
- UDPMGMT_FPIPE_SIGNATURE, 8)){
- return UDP_FPIPE_TYPE;
- }
- }
- return UDP_INVALID_TYPE;
-}
-
-
-/*==============================================================================
- * Initializes the Statistics values in the fr_channel structure.
- */
-void init_chan_statistics( fr_channel_t* chan)
-{
- memset(&chan->drvstats_if_send.if_send_entry, 0,
- sizeof(if_send_stat_t));
- memset(&chan->drvstats_rx_intr.rx_intr_no_socket, 0,
- sizeof(rx_intr_stat_t));
- memset(&chan->drvstats_gen.UDP_PIPE_mgmt_kmalloc_err, 0,
- sizeof(pipe_mgmt_stat_t));
-}
-
-/*==============================================================================
- * Initializes the Statistics values in the Sdla_t structure.
- */
-void init_global_statistics( sdla_t* card )
-{
- /* Intialize global statistics for a card */
- memset(&card->statistics.isr_entry, 0, sizeof(global_stats_t));
-}
-
-static void read_DLCI_IB_mapping( sdla_t* card, fr_channel_t* chan )
-{
- fr_mbox_t* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- dlci_IB_mapping_t* result;
- int err, counter, found;
-
- do {
- mbox->cmd.command = FR_READ_DLCI_IB_MAPPING;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && fr_event(card, err, mbox));
-
- if( mbox->cmd.result != 0){
- printk(KERN_INFO "%s: Read DLCI IB Mapping failed\n",
- chan->name);
- }
-
- counter = mbox->cmd.length / sizeof(dlci_IB_mapping_t);
- result = (void *)mbox->data;
-
- found = 0;
- for (; counter; --counter, ++result) {
- if ( result->dlci == chan->dlci ) {
- chan->IB_addr = result->addr_value;
- if(card->hw.type == SDLA_S514){
- chan->dlci_int_interface =
- (void*)(card->hw.dpmbase +
- chan->IB_addr);
- }else{
- chan->dlci_int_interface =
- (void*)(card->hw.dpmbase +
- (chan->IB_addr & 0x00001FFF));
-
- }
- found = 1;
- break;
- }
- }
- if (!found)
- printk( KERN_INFO "%s: DLCI %d not found by IB MAPPING cmd\n",
- card->devname, chan->dlci);
-}
-
-
-
-void s508_s514_lock(sdla_t *card, unsigned long *smp_flags)
-{
- if (card->hw.type != SDLA_S514){
-
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
- }else{
- spin_lock(&card->u.f.if_send_lock);
- }
- return;
-}
-
-
-void s508_s514_unlock(sdla_t *card, unsigned long *smp_flags)
-{
- if (card->hw.type != SDLA_S514){
-
- spin_unlock_irqrestore (&card->wandev.lock, *smp_flags);
- }else{
- spin_unlock(&card->u.f.if_send_lock);
- }
- return;
-}
-
-
-
-/*----------------------------------------------------------------------
- RECEIVE INTERRUPT: BOTTOM HALF HANDLERS
- ----------------------------------------------------------------------*/
-
-
-/*========================================================
- * bh_enqueue
- *
- * Description:
- * Insert a received packet into a circular
- * rx queue. This packet will be picked up
- * by fr_bh() and sent up the stack to the
- * user.
- *
- * Usage:
- * This function is called by rx interrupt,
- * in API mode.
- *
- */
-
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
-{
- /* Check for full */
- fr_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
-
- if (atomic_read(&chan->bh_buff_used) == MAX_BH_BUFF){
- ++card->wandev.stats.rx_dropped;
- dev_kfree_skb_any(skb);
- return 1;
- }
-
- ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb;
-
- if (chan->bh_write == (MAX_BH_BUFF-1)){
- chan->bh_write=0;
- }else{
- ++chan->bh_write;
- }
-
- atomic_inc(&chan->bh_buff_used);
-
- return 0;
-}
-
-
-/*========================================================
- * trigger_fr_bh
- *
- * Description:
- * Kick the fr_bh() handler
- *
- * Usage:
- * rx interrupt calls this function during
- * the API mode.
- */
-
-static void trigger_fr_bh (fr_channel_t *chan)
-{
- if (!test_and_set_bit(0,&chan->tq_working)){
- wanpipe_queue_work(&chan->common.wanpipe_work);
- }
-}
-
-
-/*========================================================
- * fr_bh
- *
- * Description:
- * Frame relay receive BH handler.
- * Dequeue data from the BH circular
- * buffer and pass it up the API sock.
- *
- * Rationale:
- * This fuction is used to offload the
- * rx_interrupt during API operation mode.
- * The fr_bh() function executes for each
- * dlci/interface.
- *
- * Once receive interrupt copies data from the
- * card into an skb buffer, the skb buffer
- * is appended to a circular BH buffer.
- * Then the interrupt kicks fr_bh() to finish the
- * job at a later time (not within the interrupt).
- *
- * Usage:
- * Interrupts use this to defer a task to
- * a polling routine.
- *
- */
-
-static void fr_bh(struct net_device * dev)
-{
- fr_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
- struct sk_buff *skb;
-
- if (atomic_read(&chan->bh_buff_used) == 0){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- while (atomic_read(&chan->bh_buff_used)){
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb;
-
- if (skb != NULL){
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- ++card->wandev.stats.rx_dropped;
- ++chan->ifstats.rx_dropped;
- dev_kfree_skb_any(skb);
- fr_bh_cleanup(dev);
- continue;
- }
-
- if (chan->common.func(skb,dev,chan->common.sk) != 0){
- /* Sock full cannot send, queue us for
- * another try */
- atomic_set(&chan->common.receive_block,1);
- return;
- }else{
- fr_bh_cleanup(dev);
- }
- }else{
- fr_bh_cleanup(dev);
- }
- }
- clear_bit(0, &chan->tq_working);
-
- return;
-}
-
-static int fr_bh_cleanup(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
-
- ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
-
- if (chan->bh_read == (MAX_BH_BUFF-1)){
- chan->bh_read=0;
- }else{
- ++chan->bh_read;
- }
-
- atomic_dec(&chan->bh_buff_used);
- return 0;
-}
-
-
-/*----------------------------------------------------------------------
- POLL BH HANDLERS AND KICK ROUTINES
- ----------------------------------------------------------------------*/
-
-/*============================================================
- * trigger_fr_poll
- *
- * Description:
- * Add a fr_poll() task into a tq_scheduler bh handler
- * for a specific dlci/interface. This will kick
- * the fr_poll() routine at a later time.
- *
- * Usage:
- * Interrupts use this to defer a taks to
- * a polling routine.
- *
- */
-static void trigger_fr_poll(struct net_device *dev)
-{
- fr_channel_t* chan = dev->priv;
- schedule_work(&chan->fr_poll_work);
- return;
-}
-
-
-/*============================================================
- * fr_poll
- *
- * Rationale:
- * We cannot manipulate the routing tables, or
- * ip addresses withing the interrupt. Therefore
- * we must perform such actons outside an interrupt
- * at a later time.
- *
- * Description:
- * Frame relay polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each frame relay
- * dlci/interface through a tq_schedule bottom half.
- *
- * trigger_fr_poll() function is used to kick
- * the fr_poll routine.
- */
-
-static void fr_poll(struct net_device *dev)
-{
-
- fr_channel_t* chan;
- sdla_t *card;
- u8 check_gateway=0;
-
- if (!dev || (chan = dev->priv) == NULL)
- return;
-
- card = chan->card;
-
- /* (Re)Configuraiton is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
-
- switch (chan->common.state){
-
- case WAN_DISCONNECTED:
-
- if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
- !test_bit(DEV_DOWN, &chan->interface_down) &&
- dev->flags&IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s is Down.\n",
- card->devname,dev->name);
- change_dev_flags(dev,dev->flags&~IFF_UP);
- set_bit(DEV_DOWN, &chan->interface_down);
- chan->route_flag = NO_ROUTE;
-
- }else{
- if (chan->inarp != INARP_NONE)
- process_route(dev);
- }
- break;
-
- case WAN_CONNECTED:
-
- if (test_bit(DYN_OPT_ON,&chan->interface_down) &&
- test_bit(DEV_DOWN, &chan->interface_down) &&
- !(dev->flags&IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s is Up.\n",
- card->devname,dev->name);
-
- change_dev_flags(dev,dev->flags|IFF_UP);
- clear_bit(DEV_DOWN, &chan->interface_down);
- check_gateway=1;
- }
-
- if (chan->inarp != INARP_NONE){
- process_route(dev);
- check_gateway=1;
- }
-
- if (chan->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
-
- }
-
- return;
-}
-
-/*==============================================================
- * check_tx_status
- *
- * Rationale:
- * We cannot transmit from an interrupt while
- * the if_send is transmitting data. Therefore,
- * we must check whether the tx buffers are
- * begin used, before we transmit from an
- * interrupt.
- *
- * Description:
- * Checks whether it's safe to use the transmit
- * buffers.
- *
- * Usage:
- * ARP and UDP handling routines use this function
- * because, they need to transmit data during
- * an interrupt.
- */
-
-static int check_tx_status(sdla_t *card, struct net_device *dev)
-{
-
- if (card->hw.type == SDLA_S514){
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical) ||
- test_bit(SEND_TXIRQ_CRIT, (void*)&card->wandev.critical)) {
- return 1;
- }
- }
-
- if (netif_queue_stopped(dev) || (card->u.f.tx_interrupts_pending))
- return 1;
-
- return 0;
-}
-
-/*===============================================================
- * move_dev_to_next
- *
- * Description:
- * Move the dev pointer to the next location in the
- * link list. Check if we are at the end of the
- * list, if so start from the begining.
- *
- * Usage:
- * Timer interrupt uses this function to efficiently
- * step through the devices that need to send ARP data.
- *
- */
-
-struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev)
-{
- if (card->wandev.new_if_cnt != 1){
- if (!*((struct net_device **)dev->priv))
- return card->wandev.dev;
- else
- return *((struct net_device **)dev->priv);
- }
- return dev;
-}
-
-/*==============================================================
- * trigger_config_fr
- *
- * Rationale:
- * All commands must be performed inside of a
- * interrupt.
- *
- * Description:
- * Kick the config_fr() routine throught the
- * timer interrupt.
- */
-
-
-static void trigger_config_fr (sdla_t *card)
-{
- fr508_flags_t* flags = card->flags;
-
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->imask |= FR_INTR_TIMER;
-}
-
-
-/*==============================================================
- * config_fr
- *
- * Rationale:
- * All commands must be performed inside of a
- * interrupt.
- &
- * Description:
- * Configure a DLCI. This function is executed
- * by a timer_interrupt. The if_open() function
- * triggers it.
- *
- * Usage:
- * new_if() collects all data necessary to
- * configure the DLCI. It sets the chan->dlci_ready
- * bit. When the if_open() function is executed
- * it checks this bit, and if its set it triggers
- * the timer interrupt to execute the config_fr()
- * function.
- */
-
-static void config_fr (sdla_t *card)
-{
- struct net_device *dev;
- fr_channel_t *chan;
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
-
- if ((chan=dev->priv) == NULL)
- continue;
-
- if (!test_bit(0,&chan->config_dlci))
- continue;
-
- clear_bit(0,&chan->config_dlci);
-
- /* If signalling is set to NO, then setup
- * DLCI addresses right away. Don't have to wait for
- * link to connect.
- */
- if (card->wandev.signalling == WANOPT_NO){
- printk(KERN_INFO "%s: Signalling set to NO: Mapping DLCI's\n",
- card->wandev.name);
- if (fr_init_dlci(card,chan)){
- printk(KERN_INFO "%s: ERROR: Failed to configure DLCI %i !\n",
- card->devname, chan->dlci);
- return;
- }
- }
-
- if (card->wandev.station == WANOPT_CPE) {
-
- update_chan_state(dev);
-
- /* CPE: issue full status enquiry */
- fr_issue_isf(card, FR_ISF_FSE);
-
- } else {
- /* FR switch: activate DLCI(s) */
-
- /* For Switch emulation we have to ADD and ACTIVATE
- * the DLCI(s) that were configured with the SET_DLCI_
- * CONFIGURATION command. Add and Activate will fail if
- * DLCI specified is not included in the list.
- *
- * Also If_open is called once for each interface. But
- * it does not get in here for all the interface. So
- * we have to pass the entire list of DLCI(s) to add
- * activate routines.
- */
-
- if (!check_dlci_config (card, chan)){
- fr_add_dlci(card, chan->dlci);
- fr_activate_dlci(card, chan->dlci);
- }
- }
-
- card->u.f.dlci_to_dev_map[chan->dlci] = dev;
- }
- return;
-}
-
-
-/*==============================================================
- * config_fr
- *
- * Rationale:
- * All commands must be executed during an interrupt.
- *
- * Description:
- * Trigger uncofig_fr() function through
- * the timer interrupt.
- *
- */
-
-static void trigger_unconfig_fr(struct net_device *dev)
-{
- fr_channel_t *chan = dev->priv;
- volatile sdla_t *card = chan->card;
- unsigned long timeout;
- fr508_flags_t* flags = card->flags;
- int reset_critical=0;
-
- if (test_bit(PERI_CRIT,(void*)&card->wandev.critical)){
- clear_bit(PERI_CRIT,(void*)&card->wandev.critical);
- reset_critical=1;
- }
-
- /* run unconfig_dlci() function
- * throught the timer interrupt */
- set_bit(0,(void*)&chan->unconfig_dlci);
- card->u.f.timer_int_enabled |= TMR_INT_ENABLED_UNCONFIG;
- flags->imask |= FR_INTR_TIMER;
-
- /* Wait for the command to complete */
- timeout = jiffies;
- for(;;) {
-
- if(!(card->u.f.timer_int_enabled & TMR_INT_ENABLED_UNCONFIG))
- break;
-
- if (time_after(jiffies, timeout + 1 * HZ)){
- card->u.f.timer_int_enabled &= ~TMR_INT_ENABLED_UNCONFIG;
- printk(KERN_INFO "%s: Failed to delete DLCI %i\n",
- card->devname,chan->dlci);
- break;
- }
- }
-
- if (reset_critical){
- set_bit(PERI_CRIT,(void*)&card->wandev.critical);
- }
-}
-
-/*==============================================================
- * unconfig_fr
- *
- * Rationale:
- * All commands must be executed during an interrupt.
- *
- * Description:
- * Remove the dlci from firmware.
- * This funciton is used in NODE shutdown.
- */
-
-static void unconfig_fr (sdla_t *card)
-{
- struct net_device *dev;
- fr_channel_t *chan;
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)){
-
- if ((chan=dev->priv) == NULL)
- continue;
-
- if (!test_bit(0,&chan->unconfig_dlci))
- continue;
-
- clear_bit(0,&chan->unconfig_dlci);
-
- if (card->wandev.station == WANOPT_NODE){
- printk(KERN_INFO "%s: Unconfiguring DLCI %i\n",
- card->devname,chan->dlci);
- fr_delete_dlci(card,chan->dlci);
- }
- card->u.f.dlci_to_dev_map[chan->dlci] = NULL;
- }
-}
-
-static int setup_fr_header(struct sk_buff *skb, struct net_device* dev,
- char op_mode)
-{
- fr_channel_t *chan=dev->priv;
-
- if (op_mode == WANPIPE) {
- chan->fr_header[0]=Q922_UI;
-
- switch (htons(skb->protocol)){
- case ETH_P_IP:
- chan->fr_header[1]=NLPID_IP;
- break;
- default:
- return -EINVAL;
- }
-
- return 2;
- }
-
- /* If we are in bridging mode, we must apply
- * an Ethernet header
- */
- if (op_mode == BRIDGE || op_mode == BRIDGE_NODE) {
- /* Encapsulate the packet as a bridged Ethernet frame. */
-#ifdef DEBUG
- printk(KERN_INFO "%s: encapsulating skb for frame relay\n",
- dev->name);
-#endif
- chan->fr_header[0] = 0x03;
- chan->fr_header[1] = 0x00;
- chan->fr_header[2] = 0x80;
- chan->fr_header[3] = 0x00;
- chan->fr_header[4] = 0x80;
- chan->fr_header[5] = 0xC2;
- chan->fr_header[6] = 0x00;
- chan->fr_header[7] = 0x07;
-
- /* Yuck. */
- skb->protocol = ETH_P_802_3;
- return 8;
- }
-
- return 0;
-}
-
-
-static int check_dlci_config (sdla_t *card, fr_channel_t *chan)
-{
- fr_mbox_t* mbox = card->mbox;
- int err=0;
- fr_conf_t *conf=NULL;
- unsigned short dlci_num = chan->dlci;
- int dlci_offset=0;
- struct net_device *dev = NULL;
-
- mbox->cmd.command = FR_READ_CONFIG;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = dlci_num;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err == CMD_OK){
- return 0;
- }
-
- for (dev = card->wandev.dev; dev;
- dev=*((struct net_device **)dev->priv))
- set_chan_state(dev,WAN_DISCONNECTED);
-
- printk(KERN_INFO "DLCI %i Not configured, configuring\n",dlci_num);
-
- mbox->cmd.command = FR_COMM_DISABLE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- printk(KERN_INFO "Disabled Communications \n");
-
- mbox->cmd.command = FR_READ_CONFIG;
- mbox->cmd.length = 0;
- mbox->cmd.dlci = 0;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- conf = (fr_conf_t *)mbox->data;
-
- dlci_offset=0;
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan_tmp = dev->priv;
- conf->dlci[dlci_offset] = chan_tmp->dlci;
- dlci_offset++;
- }
-
- printk(KERN_INFO "Got Fr configuration Buffer Length is %x Dlci %i Dlci Off %i\n",
- mbox->cmd.length,
- mbox->cmd.length > 0x20 ? conf->dlci[0] : -1,
- dlci_offset );
-
- mbox->cmd.length = 0x20 + dlci_offset*2;
-
- mbox->cmd.command = FR_SET_CONFIG;
- mbox->cmd.dlci = 0;
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK){
- fr_event(card, err, mbox);
- return 2;
- }
-
- initialize_rx_tx_buffers (card);
-
-
- printk(KERN_INFO "Configuraiton Succeded for new DLCI %i\n",dlci_num);
-
- if (fr_comm_enable (card)){
- return 2;
- }
-
- printk(KERN_INFO "Enabling Communications \n");
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)) {
- fr_channel_t *chan_tmp = dev->priv;
- fr_init_dlci(card,chan_tmp);
- fr_add_dlci(card, chan_tmp->dlci);
- fr_activate_dlci(card, chan_tmp->dlci);
- }
-
- printk(KERN_INFO "END OF CONFIGURAITON %i\n",dlci_num);
-
- return 1;
-}
-
-static void initialize_rx_tx_buffers (sdla_t *card)
-{
- fr_buf_info_t* buf_info;
-
- if (card->hw.type == SDLA_S514) {
-
- buf_info = (void*)(card->hw.dpmbase + FR_MB_VECTOR +
- FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) +
- card->hw.dpmbase);
- }else{
- buf_info = (void*)(card->hw.dpmbase + FR508_RXBC_OFFS);
-
- card->rxmb = (void*)(buf_info->rse_next -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_base =
- (void*)(buf_info->rse_base -
- FR_MB_VECTOR + card->hw.dpmbase);
-
- card->u.f.rxmb_last =
- (void*)(buf_info->rse_base +
- (buf_info->rse_num - 1) * sizeof(fr_rx_buf_ctl_t) -
- FR_MB_VECTOR + card->hw.dpmbase);
- }
-
- card->u.f.rx_base = buf_info->buf_base;
- card->u.f.rx_top = buf_info->buf_top;
-
- card->u.f.tx_interrupts_pending = 0;
-
- return;
-}
-
-
-
-MODULE_LICENSE("GPL");
-
-/****** End *****************************************************************/
diff --git a/drivers/net/wan/sdla_ft1.c b/drivers/net/wan/sdla_ft1.c
deleted file mode 100644
index 9d6528a50f7..00000000000
--- a/drivers/net/wan/sdla_ft1.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*****************************************************************************
-* sdla_chdlc.c WANPIPE(tm) Multiprotocol WAN Link Driver. Cisco HDLC module.
-*
-* Authors: Nenad Corbic <ncorbic@sangoma.com>
-* Gideon Hack
-*
-* Copyright: (c) 1995-1999 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Sep 30, 1999 Nenad Corbic Fixed dynamic IP and route setup.
-* Sep 23, 1999 Nenad Corbic Added SMP support, fixed tracing
-* Sep 13, 1999 Nenad Corbic Split up Port 0 and 1 into separate devices.
-* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
-* Oct 30, 1998 Jaspreet Singh Added Support for CHDLC API (HDLC STREAMING).
-* Oct 28, 1998 Jaspreet Singh Added Support for Dual Port CHDLC.
-* Aug 07, 1998 David Fong Initial version.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <linux/jiffies.h> /* time_after() macro */
-
-#include <linux/inetdevice.h>
-#include <asm/uaccess.h>
-
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/inet.h>
-#include <linux/if.h>
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/sdlapci.h>
-#include <asm/io.h>
-
-#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
-
-/****** Defines & Macros ****************************************************/
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP 0x0001
-#define TMR_INT_ENABLED_UPDATE 0x0002
-
-#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
-#define CHDLC_HDR_LEN 1
-
-#define IFF_POINTTOPOINT 0x10
-
-#define WANPIPE 0x00
-#define API 0x01
-#define CHDLC_API 0x01
-
-#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
-
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with CHDLC specific data
- */
-
-typedef struct chdlc_private_area
-{
- struct net_device *slave;
- sdla_t *card;
- int TracingEnabled; /* For enabling Tracing */
- unsigned long curr_trace_addr; /* Used for Tracing */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
- unsigned long base_addr_trace_buffer;
- unsigned long end_addr_trace_buffer;
- unsigned short number_trace_elements;
- unsigned available_buffer_space;
- unsigned long router_start_time;
- unsigned char route_status;
- unsigned char route_removed;
- unsigned long tick_counter; /* For 5s timeout counter */
- unsigned long router_up_time;
- u32 IP_address; /* IP addressing */
- u32 IP_netmask;
- unsigned char mc; /* Mulitcast support on/off */
- unsigned short udp_pkt_lgth; /* udp packet processing */
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
- unsigned short timer_int_enabled;
- char update_comms_stats; /* updating comms stats */
- //FIXME: add driver stats as per frame relay!
-
-} chdlc_private_area_t;
-
-/* Route Status options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-
-
-/****** Function Prototypes *************************************************/
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int wpft1_exec (struct sdla *card, void *u_cmd, void *u_data);
-static int chdlc_read_version (sdla_t* card, char* str);
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Cisco HDLC protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpft1_init (sdla_t* card, wandev_conf_t* conf)
-{
- unsigned char port_num;
- int err;
-
- union
- {
- char str[80];
- } u;
- volatile CHDLC_MAILBOX_STRUCT* mb;
- CHDLC_MAILBOX_STRUCT* mb1;
- unsigned long timeout;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_CHDLC) {
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
- }
-
- /* Use primary port */
- card->u.c.comm_port = 0;
-
-
- /* Initialize protocol-specific fields */
- if(card->hw.type != SDLA_S514){
- card->mbox = (void *) card->hw.dpmbase;
- }else{
- card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
- }
-
- mb = mb1 = card->mbox;
-
- if (!card->configured){
-
- /* The board will place an 'I' in the return code to indicate that it is
- ready to accept commands. We expect this to be completed in less
- than 1 second. */
-
- timeout = jiffies;
- while (mb->return_code != 'I') /* Wait 1s for board to initialize */
- if (time_after(jiffies, timeout + 1*HZ)) break;
-
- if (mb->return_code != 'I') {
- printk(KERN_INFO
- "%s: Initialization not completed by adapter\n",
- card->devname);
- printk(KERN_INFO "Please contact Sangoma representative.\n");
- return -EIO;
- }
- }
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
-
- if (chdlc_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: Running FT1 Configuration firmware v%s\n",
- card->devname, u.str);
-
- card->isr = NULL;
- card->poll = NULL;
- card->exec = &wpft1_exec;
- card->wandev.update = NULL;
- card->wandev.new_if = NULL;
- card->wandev.del_if = NULL;
- card->wandev.state = WAN_DUALPORT;
- card->wandev.udp_port = conf->udp_port;
-
- card->wandev.new_if_cnt = 0;
-
- /* This is for the ports link state */
- card->u.c.state = WAN_DISCONNECTED;
-
- /* reset the number of times the 'update()' proc has been called */
- card->u.c.update_call_count = 0;
-
- card->wandev.ttl = 0x7F;
- card->wandev.interface = 0;
-
- card->wandev.clocking = 0;
-
- port_num = card->u.c.comm_port;
-
- /* Setup Port Bps */
-
- card->wandev.bps = 0;
-
- card->wandev.mtu = MIN_LGTH_CHDLC_DATA_CFG;
-
- /* Set up the interrupt status area */
- /* Read the CHDLC Configuration and obtain:
- * Ptr to shared memory infor struct
- * Use this pointer to calculate the value of card->u.c.flags !
- */
- mb1->buffer_length = 0;
- mb1->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
- if(err != COMMAND_OK) {
- chdlc_error(card, err, mb1);
- return -EIO;
- }
-
- if(card->hw.type == SDLA_S514){
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct));
- }else{
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
- }
-
- card->wandev.state = WAN_FT1_READY;
- printk(KERN_INFO "%s: FT1 Config Ready !\n",card->devname);
-
- return 0;
-}
-
-static int wpft1_exec(sdla_t *card, void *u_cmd, void *u_data)
-{
- CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
- int len;
-
- if (copy_from_user((void*)&mbox->command, u_cmd, sizeof(ft1_exec_cmd_t))){
- return -EFAULT;
- }
-
- len = mbox->buffer_length;
-
- if (len) {
- if( copy_from_user((void*)&mbox->data, u_data, len)){
- return -EFAULT;
- }
- }
-
- /* execute command */
- if (!sdla_exec(mbox)){
- return -EIO;
- }
-
- /* return result */
- if( copy_to_user(u_cmd, (void*)&mbox->command, sizeof(ft1_exec_cmd_t))){
- return -EFAULT;
- }
-
- len = mbox->buffer_length;
-
- if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len)){
- return -EFAULT;
- }
-
- return 0;
-
-}
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int chdlc_read_version (sdla_t* card, char* str)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int len;
- char err;
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- }
- else if (str) { /* is not null */
- len = mb->buffer_length;
- memcpy(str, mb->data, len);
- str[len] = '\0';
- }
- return (err);
-}
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
-{
- unsigned cmd = mb->command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- case S514_BOTH_PORTS_SAME_CLK_MODE:
- if(cmd == SET_CHDLC_CONFIGURATION) {
- printk(KERN_INFO
- "%s: Configure both ports for the same clock source\n",
- card->devname);
- break;
- }
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
- card->devname, cmd, err);
- }
-
- return 0;
-}
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/net/wan/sdla_ppp.c b/drivers/net/wan/sdla_ppp.c
deleted file mode 100644
index a4b489cccbb..00000000000
--- a/drivers/net/wan/sdla_ppp.c
+++ /dev/null
@@ -1,3430 +0,0 @@
-/*****************************************************************************
-* sdla_ppp.c WANPIPE(tm) Multiprotocol WAN Link Driver. PPP module.
-*
-* Author: Nenad Corbic <ncorbic@sangoma.com>
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Feb 28, 2001 Nenad Corbic o Updated if_tx_timeout() routine for
-* 2.4.X kernels.
-* Nov 29, 2000 Nenad Corbic o Added the 2.4.x kernel support:
-* get_ip_address() function has moved
-* into the ppp_poll() routine. It cannot
-* be called from an interrupt.
-* Nov 07, 2000 Nenad Corbic o Added security features for UDP debugging:
-* Deny all and specify allowed requests.
-* May 02, 2000 Nenad Corbic o Added the dynamic interface shutdown
-* option. When the link goes down, the
-* network interface IFF_UP flag is reset.
-* Mar 06, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
-* Feb 25, 2000 Nenad Corbic o Fixed the FT1 UDP debugger problem.
-* Feb 09, 2000 Nenad Coribc o Shutdown bug fix. update() was called
-* with NULL dev pointer: no check.
-* Jan 24, 2000 Nenad Corbic o Disabled use of CMD complete inter.
-* Dev 15, 1999 Nenad Corbic o Fixed up header files for 2.0.X kernels
-* Oct 25, 1999 Nenad Corbic o Support for 2.0.X kernels
-* Moved dynamic route processing into
-* a polling routine.
-* Oct 07, 1999 Nenad Corbic o Support for S514 PCI card.
-* Gideon Hack o UPD and Updates executed using timer interrupt
-* Sep 10, 1999 Nenad Corbic o Fixed up the /proc statistics
-* Jul 20, 1999 Nenad Corbic o Remove the polling routines and use
-* interrupts instead.
-* Sep 17, 1998 Jaspreet Singh o Updates for 2.2.X Kernels.
-* Aug 13, 1998 Jaspreet Singh o Improved Line Tracing.
-* Jun 22, 1998 David Fong o Added remote IP address assignment
-* Mar 15, 1998 Alan Cox o 2.1.8x basic port.
-* Apr 16, 1998 Jaspreet Singh o using htons() for the IPX protocol.
-* Dec 09, 1997 Jaspreet Singh o Added PAP and CHAP.
-* o Implemented new routines like
-* ppp_set_inbnd_auth(), ppp_set_outbnd_auth(),
-* tokenize() and strstrip().
-* Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs
-* while they have been disabled.
-* Nov 24, 1997 Jaspreet Singh o Fixed another RACE condition caused by
-* disabling and enabling of irqs.
-* o Added new counters for stats on disable/enable
-* IRQs.
-* Nov 10, 1997 Jaspreet Singh o Initialized 'skb->mac.raw' to 'skb->data'
-* before every netif_rx().
-* o Free up the device structure in del_if().
-* Nov 07, 1997 Jaspreet Singh o Changed the delay to zero for Line tracing
-* command.
-* Oct 20, 1997 Jaspreet Singh o Added hooks in for Router UP time.
-* Oct 16, 1997 Jaspreet Singh o The critical flag is used to maintain flow
-* control by avoiding RACE conditions. The
-* cli() and restore_flags() are taken out.
-* A new structure, "ppp_private_area", is added
-* to provide Driver Statistics.
-* Jul 21, 1997 Jaspreet Singh o Protected calls to sdla_peek() by adding
-* save_flags(), cli() and restore_flags().
-* Jul 07, 1997 Jaspreet Singh o Added configurable TTL for UDP packets
-* o Added ability to discard mulitcast and
-* broacast source addressed packets.
-* Jun 27, 1997 Jaspreet Singh o Added FT1 monitor capabilities
-* New case (0x25) statement in if_send routine.
-* Added a global variable rCount to keep track
-* of FT1 status enabled on the board.
-* May 22, 1997 Jaspreet Singh o Added change in the PPP_SET_CONFIG command for
-* 508 card to reflect changes in the new
-* ppp508.sfm for supporting:continous transmission
-* of Configure-Request packets without receiving a
-* reply
-* OR-ed 0x300 to conf_flags
-* o Changed connect_tmout from 900 to 0
-* May 21, 1997 Jaspreet Singh o Fixed UDP Management for multiple boards
-* Apr 25, 1997 Farhan Thawar o added UDP Management stuff
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o fixed (+1) bug in rx_intr()
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* Jan 15, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* Jan 06, 1997 Gene Kozin Initial version.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/jiffies.h> /* time_after() macro */
-
-
-#include <asm/uaccess.h>
-#include <linux/inetdevice.h>
-#include <linux/netdevice.h>
-
-#include <linux/if.h>
-#include <linux/sdla_ppp.h> /* PPP firmware API definitions */
-#include <linux/sdlasfm.h> /* S514 Type Definition */
-/****** Defines & Macros ****************************************************/
-
-#define PPP_DFLT_MTU 1500 /* default MTU */
-#define PPP_MAX_MTU 4000 /* maximum MTU */
-#define PPP_HDR_LEN 1
-
-#define MAX_IP_ERRORS 100
-
-#define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */
-#define HOLD_DOWN_TIME (5*HZ) /* link hold down time : Changed from 30 to 5 */
-
-/* For handle_IPXWAN() */
-#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
-
-/* Macro for enabling/disabling debugging comments */
-//#define NEX_DEBUG
-#ifdef NEX_DEBUG
-#define NEX_PRINTK(format, a...) printk(format, ## a)
-#else
-#define NEX_PRINTK(format, a...)
-#endif /* NEX_DEBUG */
-
-#define DCD(a) ( a & 0x08 ? "HIGH" : "LOW" )
-#define CTS(a) ( a & 0x20 ? "HIGH" : "LOW" )
-#define LCP(a) ( a == 0x09 ? "OPEN" : "CLOSED" )
-#define IP(a) ( a == 0x09 ? "ENABLED" : "DISABLED" )
-
-#define TMR_INT_ENABLED_UPDATE 0x01
-#define TMR_INT_ENABLED_PPP_EVENT 0x02
-#define TMR_INT_ENABLED_UDP 0x04
-#define TMR_INT_ENABLED_CONFIG 0x20
-
-/* Set Configuraton Command Definitions */
-#define PERCENT_TX_BUFF 60
-#define TIME_BETWEEN_CONF_REQ 30
-#define TIME_BETWEEN_PAP_CHAP_REQ 30
-#define WAIT_PAP_CHAP_WITHOUT_REPLY 300
-#define WAIT_AFTER_DCD_CTS_LOW 5
-#define TIME_DCD_CTS_LOW_AFTER_LNK_DOWN 10
-#define WAIT_DCD_HIGH_AFTER_ENABLE_COMM 900
-#define MAX_CONF_REQ_WITHOUT_REPLY 10
-#define MAX_TERM_REQ_WITHOUT_REPLY 2
-#define NUM_CONF_NAK_WITHOUT_REPLY 5
-#define NUM_AUTH_REQ_WITHOUT_REPLY 10
-
-#define END_OFFSET 0x1F0
-
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with PPP specific data
- */
-
-typedef struct ppp_private_area
-{
- struct net_device *slave;
- sdla_t* card;
- unsigned long router_start_time; /*router start time in sec */
- unsigned long tick_counter; /*used for 5 second counter*/
- unsigned mc; /*multicast support on or off*/
- unsigned char enable_IPX;
- unsigned long network_number;
- unsigned char pap;
- unsigned char chap;
- unsigned char sysname[31]; /* system name for in-bnd auth*/
- unsigned char userid[511]; /* list of user ids */
- unsigned char passwd[511]; /* list of passwords */
- unsigned protocol; /* SKB Protocol */
- u32 ip_local; /* Local IP Address */
- u32 ip_remote; /* remote IP Address */
-
- u32 ip_local_tmp;
- u32 ip_remote_tmp;
-
- unsigned char timer_int_enabled; /* Who enabled the timer inter*/
- unsigned char update_comms_stats; /* Used by update function */
- unsigned long curr_trace_addr; /* Trace information */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
-
- unsigned char interface_down; /* Brind down interface when channel
- goes down */
- unsigned long config_wait_timeout; /* After if_open() if in dynamic if mode,
- wait a few seconds before configuring */
-
- unsigned short udp_pkt_lgth;
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
-
- /* PPP specific statistics */
-
- if_send_stat_t if_send_stat;
- rx_intr_stat_t rx_intr_stat;
- pipe_mgmt_stat_t pipe_mgmt_stat;
-
- unsigned long router_up_time;
-
- /* Polling work queue entry. Each interface
- * has its own work queue entry, which is used
- * to defer events from the interrupt */
- struct work_struct poll_work;
- struct timer_list poll_delay_timer;
-
- u8 gateway;
- u8 config_ppp;
- u8 ip_error;
-
-}ppp_private_area_t;
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device *wandev);
-static int new_if(struct wan_device *wandev, struct net_device *dev,
- wanif_conf_t *conf);
-static int del_if(struct wan_device *wandev, struct net_device *dev);
-
-/* WANPIPE-specific entry points */
-static int wpp_exec (struct sdla *card, void *u_cmd, void *u_data);
-
-/* Network device interface */
-static int if_init(struct net_device *dev);
-static int if_open(struct net_device *dev);
-static int if_close(struct net_device *dev);
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type,
- void *daddr, void *saddr, unsigned len);
-
-static void if_tx_timeout(struct net_device *dev);
-
-static int if_rebuild_hdr(struct sk_buff *skb);
-static struct net_device_stats *if_stats(struct net_device *dev);
-static int if_send(struct sk_buff *skb, struct net_device *dev);
-
-
-/* PPP firmware interface functions */
-static int ppp_read_version(sdla_t *card, char *str);
-static int ppp_set_outbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
-static int ppp_set_inbnd_auth(sdla_t *card, ppp_private_area_t *ppp_priv_area);
-static int ppp_configure(sdla_t *card, void *data);
-static int ppp_set_intr_mode(sdla_t *card, unsigned char mode);
-static int ppp_comm_enable(sdla_t *card);
-static int ppp_comm_disable(sdla_t *card);
-static int ppp_comm_disable_shutdown(sdla_t *card);
-static int ppp_get_err_stats(sdla_t *card);
-static int ppp_send(sdla_t *card, void *data, unsigned len, unsigned proto);
-static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb);
-
-static void wpp_isr(sdla_t *card);
-static void rx_intr(sdla_t *card);
-static void event_intr(sdla_t *card);
-static void timer_intr(sdla_t *card);
-
-/* Background polling routines */
-static void process_route(sdla_t *card);
-static void retrigger_comm(sdla_t *card);
-
-/* Miscellaneous functions */
-static int read_info( sdla_t *card );
-static int read_connection_info (sdla_t *card);
-static void remove_route( sdla_t *card );
-static int config508(struct net_device *dev, sdla_t *card);
-static void show_disc_cause(sdla_t * card, unsigned cause);
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
- ppp_private_area_t *ppp_priv_area);
-static void init_ppp_tx_rx_buff( sdla_t *card );
-static int intr_test( sdla_t *card );
-static int udp_pkt_type( struct sk_buff *skb , sdla_t *card);
-static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area);
-static void init_global_statistics( sdla_t *card );
-static int tokenize(char *str, char **tokens);
-static char* strstrip(char *str, char *s);
-static int chk_bcast_mcast_addr(sdla_t* card, struct net_device* dev,
- struct sk_buff *skb);
-
-static int config_ppp (sdla_t *);
-static void ppp_poll(struct net_device *dev);
-static void trigger_ppp_poll(struct net_device *dev);
-static void ppp_poll_delay (unsigned long dev_ptr);
-
-
-static int Read_connection_info;
-static int Intr_test_counter;
-static unsigned short available_buffer_space;
-
-
-/* IPX functions */
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number,
- unsigned char incoming);
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_PX,
- unsigned long network_number, unsigned short proto);
-
-/* Lock Functions */
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- ppp_private_area_t* ppp_priv_area );
-static unsigned short calc_checksum (char *data, int len);
-static void disable_comm (sdla_t *card);
-static int detect_and_fix_tx_bug (sdla_t *card);
-
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * PPP protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wpp_init(sdla_t *card, wandev_conf_t *conf)
-{
- ppp_flags_t *flags;
- union
- {
- char str[80];
- } u;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_PPP) {
-
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
-
- }
-
- /* Initialize miscellaneous pointers to structures on the adapter */
- switch (card->hw.type) {
-
- case SDLA_S508:
- card->mbox =(void*)(card->hw.dpmbase + PPP508_MB_OFFS);
- card->flags=(void*)(card->hw.dpmbase + PPP508_FLG_OFFS);
- break;
-
- case SDLA_S514:
- card->mbox =(void*)(card->hw.dpmbase + PPP514_MB_OFFS);
- card->flags=(void*)(card->hw.dpmbase + PPP514_FLG_OFFS);
- break;
-
- default:
- return -EINVAL;
-
- }
- flags = card->flags;
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
- if (ppp_read_version(card, NULL) || ppp_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: running PPP firmware v%s\n",card->devname, u.str);
- /* Adjust configuration and set defaults */
- card->wandev.mtu = (conf->mtu) ?
- min_t(unsigned int, conf->mtu, PPP_MAX_MTU) : PPP_DFLT_MTU;
-
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->isr = &wpp_isr;
- card->poll = NULL;
- card->exec = &wpp_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.udp_port = conf->udp_port;
- card->wandev.ttl = conf->ttl;
- card->wandev.state = WAN_DISCONNECTED;
- card->disable_comm = &disable_comm;
- card->irq_dis_if_send_count = 0;
- card->irq_dis_poll_count = 0;
- card->u.p.authenticator = conf->u.ppp.authenticator;
- card->u.p.ip_mode = conf->u.ppp.ip_mode ?
- conf->u.ppp.ip_mode : WANOPT_PPP_STATIC;
- card->TracingEnabled = 0;
- Read_connection_info = 1;
-
- /* initialize global statistics */
- init_global_statistics( card );
-
-
-
- if (!card->configured){
- int err;
-
- Intr_test_counter = 0;
- err = intr_test(card);
-
- if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk("%s: Interrupt Test Failed, Counter: %i\n",
- card->devname, Intr_test_counter);
- printk( "%s: Please choose another interrupt\n",card->devname);
- return -EIO;
- }
-
- printk(KERN_INFO "%s: Interrupt Test Passed, Counter: %i\n",
- card->devname, Intr_test_counter);
- card->configured = 1;
- }
-
- ppp_set_intr_mode(card, PPP_INTR_TIMER);
-
- /* Turn off the transmit and timer interrupt */
- flags->imask &= ~PPP_INTR_TIMER;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics.
- */
-static int update(struct wan_device *wandev)
-{
- sdla_t* card = wandev->private;
- struct net_device* dev;
- volatile ppp_private_area_t *ppp_priv_area;
- ppp_flags_t *flags = card->flags;
- unsigned long timeout;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- /* Shutdown bug fix. This function can be
- * called with NULL dev pointer during
- * shutdown
- */
- if ((dev=card->wandev.dev) == NULL){
- return -ENODEV;
- }
-
- if ((ppp_priv_area=dev->priv) == NULL){
- return -ENODEV;
- }
-
- ppp_priv_area->update_comms_stats = 2;
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
- flags->imask |= PPP_INTR_TIMER;
-
- /* wait a maximum of 1 second for the statistics to be updated */
- timeout = jiffies;
- for(;;) {
- if(ppp_priv_area->update_comms_stats == 0){
- break;
- }
- if (time_after(jiffies, timeout + 1 * HZ)){
- ppp_priv_area->update_comms_stats = 0;
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
-
- return 0;
-}
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device *wandev, struct net_device *dev,
- wanif_conf_t *conf)
-{
- sdla_t *card = wandev->private;
- ppp_private_area_t *ppp_priv_area;
-
- if (wandev->ndev)
- return -EEXIST;
-
-
- printk(KERN_INFO "%s: Configuring Interface: %s\n",
- card->devname, conf->name);
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
-
- printk(KERN_INFO "%s: Invalid interface name!\n",
- card->devname);
- return -EINVAL;
-
- }
-
- /* allocate and initialize private data */
- ppp_priv_area = kmalloc(sizeof(ppp_private_area_t), GFP_KERNEL);
-
- if( ppp_priv_area == NULL )
- return -ENOMEM;
-
- memset(ppp_priv_area, 0, sizeof(ppp_private_area_t));
-
- ppp_priv_area->card = card;
-
- /* initialize data */
- strcpy(card->u.p.if_name, conf->name);
-
- /* initialize data in ppp_private_area structure */
-
- init_ppp_priv_struct( ppp_priv_area );
-
- ppp_priv_area->mc = conf->mc;
- ppp_priv_area->pap = conf->pap;
- ppp_priv_area->chap = conf->chap;
-
- /* Option to bring down the interface when
- * the link goes down */
- if (conf->if_down){
- set_bit(DYN_OPT_ON,&ppp_priv_area->interface_down);
- printk("%s: Dynamic interface configuration enabled\n",
- card->devname);
- }
-
- /* If no user ids are specified */
- if(!strlen(conf->userid) && (ppp_priv_area->pap||ppp_priv_area->chap)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* If no passwords are specified */
- if(!strlen(conf->passwd) && (ppp_priv_area->pap||ppp_priv_area->chap)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- if(strlen(conf->sysname) > 31){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* If no system name is specified */
- if(!strlen(conf->sysname) && (card->u.p.authenticator)){
- kfree(ppp_priv_area);
- return -EINVAL;
- }
-
- /* copy the data into the ppp private structure */
- memcpy(ppp_priv_area->userid, conf->userid, strlen(conf->userid));
- memcpy(ppp_priv_area->passwd, conf->passwd, strlen(conf->passwd));
- memcpy(ppp_priv_area->sysname, conf->sysname, strlen(conf->sysname));
-
-
- ppp_priv_area->enable_IPX = conf->enable_IPX;
- if (conf->network_number){
- ppp_priv_area->network_number = conf->network_number;
- }else{
- ppp_priv_area->network_number = 0xDEADBEEF;
- }
-
- /* Tells us that if this interface is a
- * gateway or not */
- if ((ppp_priv_area->gateway = conf->gateway) == WANOPT_YES){
- printk(KERN_INFO "%s: Interface %s is set as a gateway.\n",
- card->devname,card->u.p.if_name);
- }
-
- /* prepare network device data space for registration */
- strcpy(dev->name,card->u.p.if_name);
-
- dev->init = &if_init;
- dev->priv = ppp_priv_area;
- dev->mtu = min_t(unsigned int, dev->mtu, card->wandev.mtu);
-
- /* Initialize the polling work routine */
- INIT_WORK(&ppp_priv_area->poll_work, (void*)(void*)ppp_poll, dev);
-
- /* Initialize the polling delay timer */
- init_timer(&ppp_priv_area->poll_delay_timer);
- ppp_priv_area->poll_delay_timer.data = (unsigned long)dev;
- ppp_priv_area->poll_delay_timer.function = ppp_poll_delay;
-
-
- /* Since we start with dummy IP addresses we can say
- * that route exists */
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device *wandev, struct net_device *dev)
-{
- return 0;
-}
-
-static void disable_comm (sdla_t *card)
-{
- ppp_comm_disable_shutdown(card);
- return;
-}
-
-/****** WANPIPE-specific entry points ***************************************/
-
-/*============================================================================
- * Execute adapter interface command.
- */
-
-//FIXME: Why do we need this ????
-static int wpp_exec(struct sdla *card, void *u_cmd, void *u_data)
-{
- ppp_mbox_t *mbox = card->mbox;
- int len;
-
- if (copy_from_user((void*)&mbox->cmd, u_cmd, sizeof(ppp_cmd_t)))
- return -EFAULT;
-
- len = mbox->cmd.length;
-
- if (len) {
-
- if( copy_from_user((void*)&mbox->data, u_data, len))
- return -EFAULT;
-
- }
-
- /* execute command */
- if (!sdla_exec(mbox))
- return -EIO;
-
- /* return result */
- if( copy_to_user(u_cmd, (void*)&mbox->cmd, sizeof(ppp_cmd_t)))
- return -EFAULT;
- len = mbox->cmd.length;
-
- if (len && u_data && copy_to_user(u_data, (void*)&mbox->data, len))
- return -EFAULT;
-
- return 0;
-}
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration. Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- struct wan_device *wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* Initialize media-specific parameters */
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- /* Enable Mulitcasting if specified by user*/
- if (ppp_priv_area->mc == WANOPT_YES){
- dev->flags |= IFF_MULTICAST;
- }
-
- dev->mtu = wandev->mtu;
- dev->hard_header_len = PPP_HDR_LEN; /* media header length */
-
- /* Initialize hardware parameters (just for reference) */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 100;
- SET_MODULE_OWNER(dev);
-
- return 0;
-}
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- struct timeval tv;
- //unsigned long smp_flags;
-
- if (netif_running(dev))
- return -EBUSY;
-
- wanpipe_open(card);
-
- netif_start_queue(dev);
-
- do_gettimeofday( &tv );
- ppp_priv_area->router_start_time = tv.tv_sec;
-
- /* We cannot configure the card here because we don't
- * have access to the interface IP addresses.
- * Once the interface initilization is complete, we will be
- * able to access the IP addresses. Therefore,
- * configure the ppp link in the poll routine */
- set_bit(0,&ppp_priv_area->config_ppp);
- ppp_priv_area->config_wait_timeout=jiffies;
-
- /* Start the PPP configuration after 1sec delay.
- * This will give the interface initilization time
- * to finish its configuration */
- mod_timer(&ppp_priv_area->poll_delay_timer, jiffies + HZ);
- return 0;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last open, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
-
- netif_stop_queue(dev);
- wanpipe_close(card);
-
- del_timer (&ppp_priv_area->poll_delay_timer);
- return 0;
-}
-
-/*============================================================================
- * Build media header.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol' field of
- * the socket buffer, so that we don't forget it. If packet type is not
- * supported, set skb->protocol to 0 and discard packet later.
- *
- * Return: media header length.
- */
-static int if_header(struct sk_buff *skb, struct net_device *dev,
- unsigned short type, void *daddr, void *saddr, unsigned len)
-{
- switch (type)
- {
- case ETH_P_IP:
- case ETH_P_IPX:
- skb->protocol = htons(type);
- break;
-
- default:
- skb->protocol = 0;
- }
-
- return PPP_HDR_LEN;
-}
-
-/*============================================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- */
-static int if_rebuild_hdr (struct sk_buff *skb)
-{
- struct net_device *dev = skb->dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
-
- printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, dev->name);
- return 1;
-}
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- ppp_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++ chan->if_send_stat.if_send_tbusy;
- ++card->wandev.stats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
- ++chan->if_send_stat.if_send_tbusy_timeout;
- netif_wake_queue (dev);
-}
-
-
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-static int if_send (struct sk_buff *skb, struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t *card = ppp_priv_area->card;
- unsigned char *sendpacket;
- unsigned long smp_flags;
- ppp_flags_t *flags = card->flags;
- int udp_type;
- int err=0;
-
- ++ppp_priv_area->if_send_stat.if_send_entry;
-
- netif_stop_queue(dev);
-
- if (skb == NULL) {
-
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: interface %s got kicked!\n",
- card->devname, dev->name);
-
- ++ppp_priv_area->if_send_stat.if_send_skb_null;
-
- netif_wake_queue(dev);
- return 0;
- }
-
- sendpacket = skb->data;
-
- udp_type = udp_pkt_type( skb, card );
-
-
- if (udp_type == UDP_PTPIPE_TYPE){
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
- ppp_priv_area)){
- flags->imask |= PPP_INTR_TIMER;
- }
- ++ppp_priv_area->if_send_stat.if_send_PIPE_request;
- netif_start_queue(dev);
- return 0;
- }
-
- /* Check for broadcast and multicast addresses
- * If found, drop (deallocate) a packet and return.
- */
- if(chk_bcast_mcast_addr(card, dev, skb)){
- ++card->wandev.stats.tx_dropped;
- dev_kfree_skb_any(skb);
- netif_start_queue(dev);
- return 0;
- }
-
-
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
-
- printk(KERN_INFO "%s: Critical in if_send: %lx\n",
- card->wandev.name,card->wandev.critical);
-
- ++card->wandev.stats.tx_dropped;
- ++ppp_priv_area->if_send_stat.if_send_critical_non_ISR;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
-
- if (card->wandev.state != WAN_CONNECTED) {
-
- ++ppp_priv_area->if_send_stat.if_send_wan_disconnected;
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
-
- } else if (!skb->protocol) {
- ++ppp_priv_area->if_send_stat.if_send_protocol_error;
- ++card->wandev.stats.tx_errors;
- netif_start_queue(dev);
-
- } else {
-
- /*If it's IPX change the network numbers to 0 if they're ours.*/
- if( skb->protocol == htons(ETH_P_IPX) ) {
- if(ppp_priv_area->enable_IPX) {
- switch_net_numbers( skb->data,
- ppp_priv_area->network_number, 0);
- } else {
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_exit_crit;
- }
- }
-
- if (ppp_send(card, skb->data, skb->len, skb->protocol)) {
- netif_stop_queue(dev);
- ++ppp_priv_area->if_send_stat.if_send_adptr_bfrs_full;
- ++ppp_priv_area->if_send_stat.if_send_tx_int_enabled;
- } else {
- ++ppp_priv_area->if_send_stat.if_send_bfr_passed_to_adptr;
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += skb->len;
- netif_start_queue(dev);
- dev->trans_start = jiffies;
- }
- }
-
-if_send_exit_crit:
-
- if (!(err=netif_queue_stopped(dev))){
- dev_kfree_skb_any(skb);
- }else{
- ppp_priv_area->tick_counter = jiffies;
- flags->imask |= PPP_INTR_TXRDY; /* unmask Tx interrupts */
- }
-
- clear_bit(SEND_CRIT,&card->wandev.critical);
- if(card->hw.type != SDLA_S514){
- s508_unlock(card,&smp_flags);
- }
-
- return err;
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- ppp_private_area_t* ppp_priv_area )
-{
- int udp_pkt_stored = 0;
-
- if(!ppp_priv_area->udp_pkt_lgth && (skb->len<=MAX_LGTH_UDP_MGNT_PKT)){
- ppp_priv_area->udp_pkt_lgth = skb->len;
- ppp_priv_area->udp_pkt_src = udp_pkt_src;
- memcpy(ppp_priv_area->udp_pkt_data, skb->data, skb->len);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_UDP;
- ppp_priv_area->protocol = skb->protocol;
- udp_pkt_stored = 1;
- }else{
- if (skb->len > MAX_LGTH_UDP_MGNT_PKT){
- printk(KERN_INFO "%s: PIPEMON UDP request too long : %i\n",
- card->devname, skb->len);
- }else{
- printk(KERN_INFO "%s: PIPEMON UPD request already pending\n",
- card->devname);
- }
- ppp_priv_area->udp_pkt_lgth = 0;
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
- ppp_udp_pkt_t *p_udp_pkt = (ppp_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
- /* fill in UDP reply */
- p_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound=1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- p_udp_pkt->udp_pkt.udp_length = temp;
-
-
- /* swap UDP ports */
- temp = p_udp_pkt->udp_pkt.udp_src_port;
- p_udp_pkt->udp_pkt.udp_src_port =
- p_udp_pkt->udp_pkt.udp_dst_port;
- p_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)(p_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
- /* calculate UDP checksum */
- p_udp_pkt->udp_pkt.udp_checksum = 0;
- p_udp_pkt->udp_pkt.udp_checksum =
- calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = udp_length + sizeof(ip_pkt_t);
- temp = (ip_length<<8)|(ip_length>>8);
- p_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = p_udp_pkt->ip_pkt.ip_src_address;
- p_udp_pkt->ip_pkt.ip_src_address = p_udp_pkt->ip_pkt.ip_dst_address;
- p_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
- /* fill in IP checksum */
- p_udp_pkt->ip_pkt.hdr_checksum = 0;
- p_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
- return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-/*
- If incoming is 0 (outgoing)- if the net numbers is ours make it 0
- if incoming is 1 - if the net number is 0 make it ours
-
-*/
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
-{
- unsigned long pnetwork_number;
-
- pnetwork_number = (unsigned long)((sendpacket[6] << 24) +
- (sendpacket[7] << 16) + (sendpacket[8] << 8) +
- sendpacket[9]);
-
- if (!incoming) {
- //If the destination network number is ours, make it 0
- if( pnetwork_number == network_number) {
- sendpacket[6] = sendpacket[7] = sendpacket[8] =
- sendpacket[9] = 0x00;
- }
- } else {
- //If the incoming network is 0, make it ours
- if( pnetwork_number == 0) {
- sendpacket[6] = (unsigned char)(network_number >> 24);
- sendpacket[7] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[8] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[9] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-
-
- pnetwork_number = (unsigned long)((sendpacket[18] << 24) +
- (sendpacket[19] << 16) + (sendpacket[20] << 8) +
- sendpacket[21]);
-
- if( !incoming ) {
- //If the source network is ours, make it 0
- if( pnetwork_number == network_number) {
- sendpacket[18] = sendpacket[19] = sendpacket[20] =
- sendpacket[21] = 0x00;
- }
- } else {
- //If the source network is 0, make it ours
- if( pnetwork_number == 0 ) {
- sendpacket[18] = (unsigned char)(network_number >> 24);
- sendpacket[19] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[20] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[21] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct net_device_stats.
- */
-static struct net_device_stats *if_stats(struct net_device *dev)
-{
-
- ppp_private_area_t *ppp_priv_area = dev->priv;
- sdla_t* card;
-
- if( ppp_priv_area == NULL )
- return NULL;
-
- card = ppp_priv_area->card;
- return &card->wandev.stats;
-}
-
-/****** PPP Firmware Interface Functions ************************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int ppp_read_version(sdla_t *card, char *str)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
-
- ppp_error(card, err, mb);
-
- else if (str) {
-
- int len = mb->cmd.length;
-
- memcpy(str, mb->data, len);
- str[len] = '\0';
-
- }
-
- return err;
-}
-/*===========================================================================
- * Set Out-Bound Authentication.
-*/
-static int ppp_set_outbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memset(&mb->data, 0, (strlen(ppp_priv_area->userid) +
- strlen(ppp_priv_area->passwd) + 2 ) );
- memcpy(mb->data, ppp_priv_area->userid, strlen(ppp_priv_area->userid));
- memcpy((mb->data + strlen(ppp_priv_area->userid) + 1),
- ppp_priv_area->passwd, strlen(ppp_priv_area->passwd));
-
- mb->cmd.length = strlen(ppp_priv_area->userid) +
- strlen(ppp_priv_area->passwd) + 2 ;
-
- mb->cmd.command = PPP_SET_OUTBOUND_AUTH;
-
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*===========================================================================
- * Set In-Bound Authentication.
-*/
-static int ppp_set_inbnd_auth (sdla_t *card, ppp_private_area_t *ppp_priv_area)
-{
- ppp_mbox_t *mb = card->mbox;
- int err, i;
- char* user_tokens[32];
- char* pass_tokens[32];
- int userids, passwds;
- int add_ptr;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memset(&mb->data, 0, 1008);
- memcpy(mb->data, ppp_priv_area->sysname,
- strlen(ppp_priv_area->sysname));
-
- /* Parse the userid string and the password string and build a string
- to copy it to the data area of the command structure. The string
- will look like "SYS_NAME<NULL>USER1<NULL>PASS1<NULL>USER2<NULL>PASS2
- ....<NULL> "
- */
- userids = tokenize( ppp_priv_area->userid, user_tokens);
- passwds = tokenize( ppp_priv_area->passwd, pass_tokens);
-
- if (userids != passwds){
- printk(KERN_INFO "%s: Number of passwords does not equal the number of user ids\n", card->devname);
- return 1;
- }
-
- add_ptr = strlen(ppp_priv_area->sysname) + 1;
- for (i=0; i<userids; i++){
- memcpy((mb->data + add_ptr), user_tokens[i],
- strlen(user_tokens[i]));
- memcpy((mb->data + add_ptr + strlen(user_tokens[i]) + 1),
- pass_tokens[i], strlen(pass_tokens[i]));
- add_ptr = add_ptr + strlen(user_tokens[i]) + 1 +
- strlen(pass_tokens[i]) + 1;
- }
-
- mb->cmd.length = add_ptr + 1;
- mb->cmd.command = PPP_SET_INBOUND_AUTH;
-
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-
-/*============================================================================
- * Tokenize string.
- * Parse a string of the following syntax:
- * <arg1>,<arg2>,...
- * and fill array of tokens with pointers to string elements.
- *
- */
-static int tokenize (char *str, char **tokens)
-{
- int cnt = 0;
-
- tokens[0] = strsep(&str, "/");
- while (tokens[cnt] && (cnt < 32 - 1))
- {
- tokens[cnt] = strstrip(tokens[cnt], " \t");
- tokens[++cnt] = strsep(&str, "/");
- }
- return cnt;
-}
-
-/*============================================================================
- * Strip leading and trailing spaces off the string str.
- */
-static char* strstrip (char *str, char* s)
-{
- char *eos = str + strlen(str); /* -> end of string */
-
- while (*str && strchr(s, *str))
- ++str /* strip leading spaces */
- ;
- while ((eos > str) && strchr(s, *(eos - 1)))
- --eos /* strip trailing spaces */
- ;
- *eos = '\0';
- return str;
-}
-/*============================================================================
- * Configure PPP firmware.
- */
-static int ppp_configure(sdla_t *card, void *data)
-{
- ppp_mbox_t *mb = card->mbox;
- int data_len = sizeof(ppp508_conf_t);
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- memcpy(mb->data, data, data_len);
- mb->cmd.length = data_len;
- mb->cmd.command = PPP_SET_CONFIG;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*============================================================================
- * Set interrupt mode.
- */
-static int ppp_set_intr_mode(sdla_t *card, unsigned char mode)
-{
- ppp_mbox_t *mb = card->mbox;
- ppp_intr_info_t *ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- ppp_intr_data->i_enable = mode;
-
- ppp_intr_data->irq = card->hw.irq;
- mb->cmd.length = 2;
-
- /* If timer has been enabled, set the timer delay to 1sec */
- if (mode & 0x80){
- ppp_intr_data->timer_len = 250; //5;//100; //250;
- mb->cmd.length = 4;
- }
-
- mb->cmd.command = PPP_SET_INTR_FLAGS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
-
-
- return err;
-}
-
-/*============================================================================
- * Enable communications.
- */
-static int ppp_comm_enable(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_ENABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- else
- card->u.p.comm_enabled = 1;
-
- return err;
-}
-
-/*============================================================================
- * Disable communications.
- */
-static int ppp_comm_disable(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_DISABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- else
- card->u.p.comm_enabled = 0;
-
- return err;
-}
-
-static int ppp_comm_disable_shutdown(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- ppp_intr_info_t *ppp_intr_data;
- int err;
-
- if (!mb){
- return 1;
- }
-
- ppp_intr_data = (ppp_intr_info_t *) &mb->data[0];
-
- /* Disable all interrupts */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- ppp_intr_data->i_enable = 0;
-
- ppp_intr_data->irq = card->hw.irq;
- mb->cmd.length = 2;
-
- mb->cmd.command = PPP_SET_INTR_FLAGS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- /* Disable communicatinons */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_COMM_DISABLE;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- card->u.p.comm_enabled = 0;
-
- return 0;
-}
-
-
-
-/*============================================================================
- * Get communications error statistics.
- */
-static int ppp_get_err_stats(sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.command = PPP_READ_ERROR_STATS;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err == CMD_OK) {
-
- ppp_err_stats_t* stats = (void*)mb->data;
- card->wandev.stats.rx_over_errors = stats->rx_overrun;
- card->wandev.stats.rx_crc_errors = stats->rx_bad_crc;
- card->wandev.stats.rx_missed_errors = stats->rx_abort;
- card->wandev.stats.rx_length_errors = stats->rx_lost;
- card->wandev.stats.tx_aborted_errors = stats->tx_abort;
-
- } else
- ppp_error(card, err, mb);
-
- return err;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-static int ppp_send (sdla_t *card, void *data, unsigned len, unsigned proto)
-{
- ppp_buf_ctl_t *txbuf = card->u.p.txbuf;
-
- if (txbuf->flag)
- return 1;
-
- sdla_poke(&card->hw, txbuf->buf.ptr, data, len);
-
- txbuf->length = len; /* frame length */
-
- if (proto == htons(ETH_P_IPX))
- txbuf->proto = 0x01; /* protocol ID */
- else
- txbuf->proto = 0x00; /* protocol ID */
-
- txbuf->flag = 1; /* start transmission */
-
- /* Update transmit buffer control fields */
- card->u.p.txbuf = ++txbuf;
-
- if ((void*)txbuf > card->u.p.txbuf_last)
- card->u.p.txbuf = card->u.p.txbuf_base;
-
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int ppp_error(sdla_t *card, int err, ppp_mbox_t *mb)
-{
- unsigned cmd = mb->cmd.command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n"
- , card->devname, cmd, err);
- }
-
- return 0;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * PPP interrupt service routine.
- */
-static void wpp_isr (sdla_t *card)
-{
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- struct net_device *dev = card->wandev.dev;
- int i;
-
- card->in_isr = 1;
- ++card->statistics.isr_entry;
-
- if (!dev && flags->iflag != PPP_INTR_CMD){
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
-
- if (test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
-
-
- if(card->hw.type != SDLA_S514){
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)) {
- ++card->statistics.isr_already_critical;
- printk (KERN_INFO "%s: Critical while in ISR!\n",
- card->devname);
- card->in_isr = 0;
- flags->iflag = 0;
- return;
- }
- }
-
- switch (flags->iflag) {
-
- case PPP_INTR_RXRDY: /* receive interrupt 0x01 (bit 0)*/
- ++card->statistics.isr_rx;
- rx_intr(card);
- break;
-
- case PPP_INTR_TXRDY: /* transmit interrupt 0x02 (bit 1)*/
- ++card->statistics.isr_tx;
- flags->imask &= ~PPP_INTR_TXRDY;
- netif_wake_queue(dev);
- break;
-
- case PPP_INTR_CMD: /* interface command completed */
- ++Intr_test_counter;
- ++card->statistics.isr_intr_test;
- break;
-
- case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
- case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
- case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
- case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
- event_intr(card);
- break;
-
- case PPP_INTR_TIMER:
- timer_intr(card);
- break;
-
- default: /* unexpected interrupt */
- ++card->statistics.isr_spurious;
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname, flags->iflag);
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
- }
-
- card->in_isr = 0;
- flags->iflag = 0;
- return;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr(sdla_t *card)
-{
- ppp_buf_ctl_t *rxbuf = card->rxmb;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area;
- struct sk_buff *skb;
- unsigned len;
- void *buf;
- int i;
- ppp_flags_t *flags = card->flags;
- char *ptr = &flags->iflag;
- int udp_type;
-
-
- if (rxbuf->flag != 0x01) {
-
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)rxbuf, rxbuf->flag);
-
- printk(KERN_INFO "%s: ID Bytes = ",card->devname);
-
- for(i = 0; i < 8; i ++)
- printk(KERN_INFO "0x%02X ", *(ptr + 0x28 + i));
- printk(KERN_INFO "\n");
-
- ++card->statistics.rx_intr_corrupt_rx_bfr;
-
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it means that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- ppp_set_intr_mode(card,0);
- return;
- }
-
- if (dev && netif_running(dev) && dev->priv){
-
- len = rxbuf->length;
- ppp_priv_area = dev->priv;
-
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
-
- if (skb != NULL) {
-
- /* Copy data to the socket buffer */
- unsigned addr = rxbuf->buf.ptr;
-
- if ((addr + len) > card->u.p.rx_top + 1) {
-
- unsigned tmp = card->u.p.rx_top - addr + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.p.rx_base;
- len -= tmp;
- }
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
-
- /* Decapsulate packet */
- switch (rxbuf->proto) {
-
- case 0x00:
- skb->protocol = htons(ETH_P_IP);
- break;
-
- case 0x01:
- skb->protocol = htons(ETH_P_IPX);
- break;
- }
-
- udp_type = udp_pkt_type( skb, card );
-
- if (udp_type == UDP_PTPIPE_TYPE){
-
- /* Handle a UDP Request in Timer Interrupt */
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK, card, skb, dev,
- ppp_priv_area)){
- flags->imask |= PPP_INTR_TIMER;
- }
- ++ppp_priv_area->rx_intr_stat.rx_intr_PIPE_request;
-
-
- } else if (handle_IPXWAN(skb->data,card->devname,
- ppp_priv_area->enable_IPX,
- ppp_priv_area->network_number,
- skb->protocol)) {
-
- /* Handle an IPXWAN packet */
- if( ppp_priv_area->enable_IPX) {
-
- /* Make sure we are not already sending */
- if (!test_bit(SEND_CRIT, &card->wandev.critical)){
- ppp_send(card, skb->data, skb->len, htons(ETH_P_IPX));
- }
- dev_kfree_skb_any(skb);
-
- } else {
- ++card->wandev.stats.rx_dropped;
- }
- } else {
- /* Pass data up the protocol stack */
- skb->dev = dev;
- skb->mac.raw = skb->data;
-
- ++card->wandev.stats.rx_packets;
- card->wandev.stats.rx_bytes += skb->len;
- ++ppp_priv_area->rx_intr_stat.rx_intr_bfr_passed_to_stack;
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
-
- } else {
-
- if (net_ratelimit()){
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- ++card->wandev.stats.rx_dropped;
- ++ppp_priv_area->rx_intr_stat.rx_intr_no_socket;
- }
-
- } else {
- ++card->statistics.rx_intr_dev_not_started;
- }
-
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->flag = 0x00;
- card->rxmb = ++rxbuf;
- if ((void*)rxbuf > card->u.p.rxbuf_last)
- card->rxmb = card->u.p.rxbuf_base;
-}
-
-
-void event_intr (sdla_t *card)
-{
-
- struct net_device* dev = card->wandev.dev;
- ppp_private_area_t* ppp_priv_area = dev->priv;
- volatile ppp_flags_t *flags = card->flags;
-
- switch (flags->iflag){
-
- case PPP_INTR_MODEM: /* modem status change (DCD, CTS) 0x04 (bit 2)*/
-
- if (net_ratelimit()){
- printk (KERN_INFO "%s: Modem status: DCD=%s CTS=%s\n",
- card->devname, DCD(flags->mstatus), CTS(flags->mstatus));
- }
- break;
-
- case PPP_INTR_DISC: /* Data link disconnected 0x10 (bit 4)*/
-
- NEX_PRINTK (KERN_INFO "Data link disconnected intr Cause %X\n",
- flags->disc_cause);
-
- if (flags->disc_cause &
- (PPP_LOCAL_TERMINATION | PPP_DCD_CTS_DROP |
- PPP_REMOTE_TERMINATION)) {
-
- if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
- set_bit(0,&Read_connection_info);
- }
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- show_disc_cause(card, flags->disc_cause);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- trigger_ppp_poll(dev);
- }
- break;
-
- case PPP_INTR_OPEN: /* Data link open 0x20 (bit 5)*/
-
- NEX_PRINTK (KERN_INFO "%s: PPP Link Open, LCP=%s IP=%s\n",
- card->devname,LCP(flags->lcp_state),
- IP(flags->ip_state));
-
- if (flags->lcp_state == 0x09 &&
- (flags->ip_state == 0x09 || flags->ipx_state == 0x09)){
-
- /* Initialize the polling timer and set the state
- * to WAN_CONNNECTED */
-
-
- /* BUG FIX: When the protocol restarts, during heavy
- * traffic, board tx buffers and driver tx buffers
- * can go out of sync. This checks the condition
- * and if the tx buffers are out of sync, the
- * protocols are restarted.
- * I don't know why the board tx buffer is out
- * of sync. It could be that a packets is tx
- * while the link is down, but that is not
- * possible. The other possiblility is that the
- * firmware doesn't reinitialize properly.
- * FIXME: A better fix should be found.
- */
- if (detect_and_fix_tx_bug(card)){
-
- ppp_comm_disable(card);
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- ppp_priv_area->timer_int_enabled |=
- TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- break;
- }
-
- card->state_tick = jiffies;
- wanpipe_set_state(card, WAN_CONNECTED);
-
- NEX_PRINTK(KERN_INFO "CON: L Tx: %lx B Tx: %lx || L Rx %lx B Rx %lx\n",
- (unsigned long)card->u.p.txbuf, *card->u.p.txbuf_next,
- (unsigned long)card->rxmb, *card->u.p.rxbuf_next);
-
- /* Tell timer interrupt that PPP event occurred */
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
-
- /* If we are in PEER mode, we must first obtain the
- * IP information and then go into the poll routine */
- if (card->u.p.ip_mode != WANOPT_PPP_PEER){
- trigger_ppp_poll(dev);
- }
- }
- break;
-
- case PPP_INTR_DROP_DTR: /* DTR drop timeout expired 0x40 bit 6 */
-
- NEX_PRINTK(KERN_INFO "DTR Drop Timeout Interrrupt \n");
-
- if (card->u.p.ip_mode == WANOPT_PPP_PEER) {
- set_bit(0,&Read_connection_info);
- }
-
- wanpipe_set_state(card, WAN_DISCONNECTED);
-
- show_disc_cause(card, flags->disc_cause);
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_PPP_EVENT;
- flags->imask |= PPP_INTR_TIMER;
- trigger_ppp_poll(dev);
- break;
-
- default:
- printk(KERN_INFO "%s: Error, Invalid PPP Event\n",card->devname);
- }
-}
-
-
-
-/* TIMER INTERRUPT */
-
-void timer_intr (sdla_t *card)
-{
-
- struct net_device* dev = card->wandev.dev;
- ppp_private_area_t* ppp_priv_area = dev->priv;
- ppp_flags_t *flags = card->flags;
-
-
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG){
- if (!config_ppp(card)){
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_CONFIG;
- }
- }
-
- /* Update statistics */
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE){
- ppp_get_err_stats(card);
- if(!(--ppp_priv_area->update_comms_stats)){
- ppp_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- /* PPIPEMON UDP request */
-
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP){
- process_udp_mgmt_pkt(card,dev, ppp_priv_area);
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
- }
-
- /* PPP Event */
- if (ppp_priv_area->timer_int_enabled & TMR_INT_ENABLED_PPP_EVENT){
-
- if (card->wandev.state == WAN_DISCONNECTED){
- retrigger_comm(card);
- }
-
- /* If the state is CONNECTING, it means that communicatins were
- * enabled. When the remote side enables its comminication we
- * should get an interrupt PPP_INTR_OPEN, thus turn off polling
- */
-
- else if (card->wandev.state == WAN_CONNECTING){
- /* Turn off the timer interrupt */
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
- }
-
- /* If state is connected and we are in PEER mode
- * poll for an IP address which will be provided by remote end.
- */
- else if ((card->wandev.state == WAN_CONNECTED &&
- card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- test_bit(0,&Read_connection_info)){
-
- card->state_tick = jiffies;
- if (read_connection_info (card)){
- printk(KERN_INFO "%s: Failed to read PEER IP Addresses\n",
- card->devname);
- }else{
- clear_bit(0,&Read_connection_info);
- set_bit(1,&Read_connection_info);
- trigger_ppp_poll(dev);
- }
- }else{
- //FIXME Put the comment back int
- ppp_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_PPP_EVENT;
- }
-
- }/* End of PPP_EVENT */
-
-
- /* Only disable the timer interrupt if there are no udp, statistic */
- /* updates or events pending */
- if(!ppp_priv_area->timer_int_enabled) {
- flags->imask &= ~PPP_INTR_TIMER;
- }
-}
-
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto)
-{
- int i;
-
- if( proto == htons(ETH_P_IPX) ) {
- //It's an IPX packet
- if(!enable_IPX) {
- //Return 1 so we don't pass it up the stack.
- return 1;
- }
- } else {
- //It's not IPX so pass it up the stack.
- return 0;
- }
-
- if( sendpacket[16] == 0x90 &&
- sendpacket[17] == 0x04)
- {
- //It's IPXWAN
-
- if( sendpacket[2] == 0x02 &&
- sendpacket[34] == 0x00)
- {
- //It's a timer request packet
- printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",devname);
-
- //Go through the routing options and answer no to every
- //option except Unnumbered RIP/SAP
- for(i = 41; sendpacket[i] == 0x00; i += 5)
- {
- //0x02 is the option for Unnumbered RIP/SAP
- if( sendpacket[i + 4] != 0x02)
- {
- sendpacket[i + 1] = 0;
- }
- }
-
- //Skip over the extended Node ID option
- if( sendpacket[i] == 0x04 )
- {
- i += 8;
- }
-
- //We also want to turn off all header compression opt.
- for(; sendpacket[i] == 0x80 ;)
- {
- sendpacket[i + 1] = 0;
- i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
- }
-
- //Set the packet type to timer response
- sendpacket[34] = 0x01;
-
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",devname);
- }
- else if( sendpacket[34] == 0x02 )
- {
- //This is an information request packet
- printk(KERN_INFO "%s: Received IPXWAN Information Request packet\n",devname);
-
- //Set the packet type to information response
- sendpacket[34] = 0x03;
-
- //Set the router name
- sendpacket[51] = 'P';
- sendpacket[52] = 'T';
- sendpacket[53] = 'P';
- sendpacket[54] = 'I';
- sendpacket[55] = 'P';
- sendpacket[56] = 'E';
- sendpacket[57] = '-';
- sendpacket[58] = CVHexToAscii(network_number >> 28);
- sendpacket[59] = CVHexToAscii((network_number & 0x0F000000)>> 24);
- sendpacket[60] = CVHexToAscii((network_number & 0x00F00000)>> 20);
- sendpacket[61] = CVHexToAscii((network_number & 0x000F0000)>> 16);
- sendpacket[62] = CVHexToAscii((network_number & 0x0000F000)>> 12);
- sendpacket[63] = CVHexToAscii((network_number & 0x00000F00)>> 8);
- sendpacket[64] = CVHexToAscii((network_number & 0x000000F0)>> 4);
- sendpacket[65] = CVHexToAscii(network_number & 0x0000000F);
- for(i = 66; i < 99; i+= 1)
- {
- sendpacket[i] = 0;
- }
-
- printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",devname);
- }
- else
- {
- printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
- return 0;
- }
-
- //Set the WNodeID to our network address
- sendpacket[35] = (unsigned char)(network_number >> 24);
- sendpacket[36] = (unsigned char)((network_number & 0x00FF0000) >> 16);
- sendpacket[37] = (unsigned char)((network_number & 0x0000FF00) >> 8);
- sendpacket[38] = (unsigned char)(network_number & 0x000000FF);
-
- return 1;
- } else {
- //If we get here it's an IPX-data packet, so it'll get passed up the stack.
-
- //switch the network numbers
- switch_net_numbers(sendpacket, network_number, 1);
- return 0;
- }
-}
-
-/****** Background Polling Routines ****************************************/
-
-/* All polling functions are invoked by the TIMER interrupt in the wpp_isr
- * routine.
- */
-
-/*============================================================================
- * Monitor active link phase.
- */
-static void process_route (sdla_t *card)
-{
- ppp_flags_t *flags = card->flags;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- (flags->ip_state == 0x09)){
-
- /* We get ip_local from the firmware in PEER mode.
- * Therefore, if ip_local is 0, we failed to obtain
- * the remote IP address. */
- if (ppp_priv_area->ip_local == 0)
- return;
-
- printk(KERN_INFO "%s: IPCP State Opened.\n", card->devname);
- if (read_info( card )) {
- printk(KERN_INFO
- "%s: An error occurred in IP assignment.\n",
- card->devname);
- } else {
- struct in_device *in_dev = dev->ip_ptr;
- if (in_dev != NULL ) {
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- printk(KERN_INFO "%s: Assigned Lcl. Addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(ifa->ifa_local));
- printk(KERN_INFO "%s: Assigned Rmt. Addr: %u.%u.%u.%u\n",
- card->devname, NIPQUAD(ifa->ifa_address));
- }else{
- printk(KERN_INFO
- "%s: Error: Failed to add a route for PPP interface %s\n",
- card->devname,dev->name);
- }
- }
- }
-}
-
-/*============================================================================
- * Monitor physical link disconnected phase.
- * o if interface is up and the hold-down timeout has expired, then retry
- * connection.
- */
-static void retrigger_comm(sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
-
- if (dev && ((jiffies - card->state_tick) > HOLD_DOWN_TIME)) {
-
- wanpipe_set_state(card, WAN_CONNECTING);
-
- if(ppp_comm_enable(card) == CMD_OK){
- init_ppp_tx_rx_buff( card );
- }
- }
-}
-
-/****** Miscellaneous Functions *********************************************/
-
-/*============================================================================
- * Configure S508 adapter.
- */
-static int config508(struct net_device *dev, sdla_t *card)
-{
- ppp508_conf_t cfg;
- struct in_device *in_dev = dev->ip_ptr;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- /* Prepare PPP configuration structure */
- memset(&cfg, 0, sizeof(ppp508_conf_t));
-
- if (card->wandev.clocking)
- cfg.line_speed = card->wandev.bps;
-
- if (card->wandev.interface == WANOPT_RS232)
- cfg.conf_flags |= INTERFACE_LEVEL_RS232;
-
-
- cfg.conf_flags |= DONT_TERMINATE_LNK_MAX_CONFIG; /*send Configure-Request packets forever*/
- cfg.txbuf_percent = PERCENT_TX_BUFF; /* % of Tx bufs */
- cfg.mtu_local = card->wandev.mtu;
- cfg.mtu_remote = card->wandev.mtu; /* Default */
- cfg.restart_tmr = TIME_BETWEEN_CONF_REQ; /* 30 = 3sec */
- cfg.auth_rsrt_tmr = TIME_BETWEEN_PAP_CHAP_REQ; /* 30 = 3sec */
- cfg.auth_wait_tmr = WAIT_PAP_CHAP_WITHOUT_REPLY; /* 300 = 30s */
- cfg.mdm_fail_tmr = WAIT_AFTER_DCD_CTS_LOW; /* 5 = 0.5s */
- cfg.dtr_drop_tmr = TIME_DCD_CTS_LOW_AFTER_LNK_DOWN; /* 10 = 1s */
- cfg.connect_tmout = WAIT_DCD_HIGH_AFTER_ENABLE_COMM; /* 900 = 90s */
- cfg.conf_retry = MAX_CONF_REQ_WITHOUT_REPLY; /* 10 = 1s */
- cfg.term_retry = MAX_TERM_REQ_WITHOUT_REPLY; /* 2 times */
- cfg.fail_retry = NUM_CONF_NAK_WITHOUT_REPLY; /* 5 times */
- cfg.auth_retry = NUM_AUTH_REQ_WITHOUT_REPLY; /* 10 times */
-
-
- if( !card->u.p.authenticator ) {
- printk(KERN_INFO "%s: Device is not configured as an authenticator\n",
- card->devname);
- cfg.auth_options = NO_AUTHENTICATION;
- }else{
- printk(KERN_INFO "%s: Device is configured as an authenticator\n",
- card->devname);
- cfg.auth_options = INBOUND_AUTH;
- }
-
- if( ppp_priv_area->pap == WANOPT_YES){
- cfg.auth_options |=PAP_AUTH;
- printk(KERN_INFO "%s: Pap enabled\n", card->devname);
- }
- if( ppp_priv_area->chap == WANOPT_YES){
- cfg.auth_options |= CHAP_AUTH;
- printk(KERN_INFO "%s: Chap enabled\n", card->devname);
- }
-
-
- if (ppp_priv_area->enable_IPX == WANOPT_YES){
- printk(KERN_INFO "%s: Enabling IPX Protocol\n",card->devname);
- cfg.ipx_options = ENABLE_IPX | ROUTING_PROT_DEFAULT;
- }else{
- cfg.ipx_options = DISABLE_IPX;
- }
-
- switch (card->u.p.ip_mode) {
-
- case WANOPT_PPP_STATIC:
-
- printk(KERN_INFO "%s: PPP IP Mode: STATIC\n",card->devname);
- cfg.ip_options = L_AND_R_IP_NO_ASSIG |
- ENABLE_IP;
- cfg.ip_local = in_dev->ifa_list->ifa_local;
- cfg.ip_remote = in_dev->ifa_list->ifa_address;
- /* Debugging code used to check that IP addresses
- * obtained from the kernel are correct */
-
- NEX_PRINTK(KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
- NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
- break;
-
- case WANOPT_PPP_HOST:
-
- printk(KERN_INFO "%s: PPP IP Mode: HOST\n",card->devname);
- cfg.ip_options = L_IP_LOCAL_ASSIG |
- R_IP_LOCAL_ASSIG |
- ENABLE_IP;
- cfg.ip_local = in_dev->ifa_list->ifa_local;
- cfg.ip_remote = in_dev->ifa_list->ifa_address;
- /* Debugging code used to check that IP addresses
- * obtained from the kernel are correct */
- NEX_PRINTK (KERN_INFO "Local %u.%u.%u.%u Remote %u.%u.%u.%u Name %s\n",
- NIPQUAD(ip_local),NIPQUAD(ip_remote), dev->name);
-
- break;
-
- case WANOPT_PPP_PEER:
-
- printk(KERN_INFO "%s: PPP IP Mode: PEER\n",card->devname);
- cfg.ip_options = L_IP_REMOTE_ASSIG |
- R_IP_REMOTE_ASSIG |
- ENABLE_IP;
- cfg.ip_local = 0x00;
- cfg.ip_remote = 0x00;
- break;
-
- default:
- printk(KERN_INFO "%s: ERROR: Unsupported PPP Mode Selected\n",
- card->devname);
- printk(KERN_INFO "%s: PPP IP Modes: STATIC, PEER or HOST\n",
- card->devname);
- return 1;
- }
-
- return ppp_configure(card, &cfg);
-}
-
-/*============================================================================
- * Show disconnection cause.
- */
-static void show_disc_cause(sdla_t *card, unsigned cause)
-{
- if (cause & 0x0802)
-
- printk(KERN_INFO "%s: link terminated by peer\n",
- card->devname);
-
- else if (cause & 0x0004)
-
- printk(KERN_INFO "%s: link terminated by user\n",
- card->devname);
-
- else if (cause & 0x0008)
-
- printk(KERN_INFO "%s: authentication failed\n", card->devname);
-
- else if (cause & 0x0010)
-
- printk(KERN_INFO
- "%s: authentication protocol negotiation failed\n",
- card->devname);
-
- else if (cause & 0x0020)
-
- printk(KERN_INFO
- "%s: peer's request for authentication rejected\n",
- card->devname);
-
- else if (cause & 0x0040)
-
- printk(KERN_INFO "%s: MRU option rejected by peer\n",
- card->devname);
-
- else if (cause & 0x0080)
-
- printk(KERN_INFO "%s: peer's MRU was too small\n",
- card->devname);
-
- else if (cause & 0x0100)
-
- printk(KERN_INFO "%s: failed to negotiate peer's LCP options\n",
- card->devname);
-
- else if (cause & 0x0200)
-
- printk(KERN_INFO "%s: failed to negotiate peer's IPCP options\n"
- , card->devname);
-
- else if (cause & 0x0400)
-
- printk(KERN_INFO
- "%s: failed to negotiate peer's IPXCP options\n",
- card->devname);
-}
-
-/*=============================================================================
- * Process UDP call of type PTPIPEAB.
- */
-static void process_udp_mgmt_pkt(sdla_t *card, struct net_device *dev,
- ppp_private_area_t *ppp_priv_area )
-{
- unsigned char buf2[5];
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short data_length, buffer_length, real_len;
- unsigned long data_ptr;
- int udp_mgmt_req_valid = 1;
- ppp_mbox_t *mbox = card->mbox;
- struct timeval tv;
- int err;
- ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t*)&ppp_priv_area->udp_pkt_data;
-
- memcpy(&buf2, &card->wandev.udp_port, 2 );
-
-
- if(ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- switch(ppp_udp_pkt->cblock.command) {
-
- case PPIPE_GET_IBA_DATA:
- case PPP_READ_CONFIG:
- case PPP_GET_CONNECTION_INFO:
- case PPIPE_ROUTER_UP_TIME:
- case PPP_READ_STATISTICS:
- case PPP_READ_ERROR_STATS:
- case PPP_READ_PACKET_STATS:
- case PPP_READ_LCP_STATS:
- case PPP_READ_IPCP_STATS:
- case PPP_READ_IPXCP_STATS:
- case PPP_READ_PAP_STATS:
- case PPP_READ_CHAP_STATS:
- case PPP_READ_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
-
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
-
- /* set length to 0 */
- ppp_udp_pkt->cblock.length = 0x00;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0xCD;
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_direction_err;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,ppp_udp_pkt->cblock.command);
- }
- } else {
- /* Initialize the trace element */
- trace_element_t trace_element;
-
- switch (ppp_udp_pkt->cblock.command){
-
- /* PPIPE_ENABLE_TRACING */
- case PPIPE_ENABLE_TRACING:
- if (!card->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = PPP_DATALINE_MONITOR;
- mbox->cmd.length = 0x01;
- mbox->data[0] = ppp_udp_pkt->data[0];
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
-
- ppp_error(card, err, mbox);
- card->TracingEnabled = 0;
-
- /* set the return code */
-
- ppp_udp_pkt->cblock.result = mbox->cmd.result;
- mbox->cmd.length = 0;
- break;
- }
-
- sdla_peek(&card->hw, 0xC000, &buf2, 2);
-
- ppp_priv_area->curr_trace_addr = 0;
- memcpy(&ppp_priv_area->curr_trace_addr, &buf2, 2);
- ppp_priv_area->start_trace_addr =
- ppp_priv_area->curr_trace_addr;
- ppp_priv_area->end_trace_addr =
- ppp_priv_area->start_trace_addr + END_OFFSET;
-
- /* MAX_SEND_BUFFER_SIZE - 28 (IP header)
- - 32 (ppipemon CBLOCK) */
- available_buffer_space = MAX_LGTH_UDP_MGNT_PKT -
- sizeof(ip_pkt_t)-
- sizeof(udp_pkt_t)-
- sizeof(wp_mgmt_t)-
- sizeof(cblock_t);
- }
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 1;
- break;
-
- /* PPIPE_DISABLE_TRACING */
- case PPIPE_DISABLE_TRACING:
-
- if(card->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mbox->cmd.command = 0x33;
- mbox->cmd.length = 1;
- mbox->data[0] = 0x00;
- err = sdla_exec(mbox) ?
- mbox->cmd.result : CMD_TIMEOUT;
-
- }
-
- /*set return code*/
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 0;
- card->TracingEnabled = 0;
- break;
-
- /* PPIPE_GET_TRACE_INFO */
- case PPIPE_GET_TRACE_INFO:
-
- if(!card->TracingEnabled) {
- /* set return code */
- ppp_udp_pkt->cblock.result = 1;
- mbox->cmd.length = 0;
- }
-
- buffer_length = 0;
-
- /* frames < 62, where 62 is the number of trace
- information elements. There is in total 496
- bytes of space and each trace information
- element is 8 bytes.
- */
- for ( frames=0; frames<62; frames++) {
-
- trace_pkt_t *trace_pkt = (trace_pkt_t *)
- &ppp_udp_pkt->data[buffer_length];
-
- /* Read the whole trace packet */
- sdla_peek(&card->hw, ppp_priv_area->curr_trace_addr,
- &trace_element, sizeof(trace_element_t));
-
- /* no data on board so exit */
- if( trace_element.opp_flag == 0x00 )
- break;
-
- data_ptr = trace_element.trace_data_ptr;
-
- /* See if there is actual data on the trace buffer */
- if (data_ptr){
- data_length = trace_element.trace_length;
- }else{
- data_length = 0;
- ppp_udp_pkt->data[0] |= 0x02;
- }
-
- //FIXME: Do we need this check
- if ((available_buffer_space - buffer_length)
- < (sizeof(trace_element_t)+1)){
-
- /*indicate we have more frames
- * on board and exit
- */
- ppp_udp_pkt->data[0] |= 0x02;
- break;
- }
-
- trace_pkt->status = trace_element.trace_type;
- trace_pkt->time_stamp = trace_element.trace_time_stamp;
- trace_pkt->real_length = trace_element.trace_length;
-
- real_len = trace_element.trace_length;
-
- if(data_ptr == 0){
- trace_pkt->data_avail = 0x00;
- }else{
- /* we can take it next time */
- if ((available_buffer_space - buffer_length)<
- (real_len + sizeof(trace_pkt_t))){
-
- ppp_udp_pkt->data[0] |= 0x02;
- break;
- }
- trace_pkt->data_avail = 0x01;
-
- /* get the data */
- sdla_peek(&card->hw, data_ptr,
- &trace_pkt->data,
- real_len);
- }
- /* zero the opp flag to
- show we got the frame */
- buf2[0] = 0x00;
- sdla_poke(&card->hw, ppp_priv_area->curr_trace_addr,
- &buf2, 1);
-
- /* now move onto the next
- frame */
- ppp_priv_area->curr_trace_addr += 8;
-
- /* check if we passed the last address */
- if ( ppp_priv_area->curr_trace_addr >=
- ppp_priv_area->end_trace_addr){
-
- ppp_priv_area->curr_trace_addr =
- ppp_priv_area->start_trace_addr;
- }
-
- /* update buffer length and make sure its even */
-
- if ( trace_pkt->data_avail == 0x01 ) {
- buffer_length += real_len - 1;
- }
-
- /* for the header */
- buffer_length += 8;
-
- if( buffer_length & 0x0001 )
- buffer_length += 1;
- }
-
- /* ok now set the total number of frames passed
- in the high 5 bits */
- ppp_udp_pkt->data[0] |= (frames << 2);
-
- /* set the data length */
- mbox->cmd.length = buffer_length;
- ppp_udp_pkt->cblock.length = buffer_length;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_GET_IBA_DATA */
- case PPIPE_GET_IBA_DATA:
-
- mbox->cmd.length = 0x09;
-
- sdla_peek(&card->hw, 0xF003, &ppp_udp_pkt->data,
- mbox->cmd.length);
-
- /* set the length of the data */
- ppp_udp_pkt->cblock.length = 0x09;
-
- /* set return code */
- ppp_udp_pkt->cblock.result = 0x00;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_FT1_READ_STATUS */
- case PPIPE_FT1_READ_STATUS:
- sdla_peek(&card->hw, 0xF020, &ppp_udp_pkt->data[0], 2);
- ppp_udp_pkt->cblock.length = mbox->cmd.length = 2;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- case PPIPE_FLUSH_DRIVER_STATS:
- init_ppp_priv_struct( ppp_priv_area );
- init_global_statistics( card );
- mbox->cmd.length = 0;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
-
- case PPIPE_ROUTER_UP_TIME:
-
- do_gettimeofday( &tv );
- ppp_priv_area->router_up_time = tv.tv_sec -
- ppp_priv_area->router_start_time;
- *(unsigned long *)&ppp_udp_pkt->data = ppp_priv_area->router_up_time;
- mbox->cmd.length = 4;
- ppp_udp_pkt->cblock.result = 0;
- break;
-
- /* PPIPE_DRIVER_STATISTICS */
- case PPIPE_DRIVER_STAT_IFSEND:
- memcpy(&ppp_udp_pkt->data, &ppp_priv_area->if_send_stat,
- sizeof(if_send_stat_t));
-
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(if_send_stat_t);
- mbox->cmd.length = sizeof(if_send_stat_t);
- break;
-
- case PPIPE_DRIVER_STAT_INTR:
- memcpy(&ppp_udp_pkt->data, &card->statistics,
- sizeof(global_stats_t));
-
- memcpy(&ppp_udp_pkt->data+sizeof(global_stats_t),
- &ppp_priv_area->rx_intr_stat,
- sizeof(rx_intr_stat_t));
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
- break;
-
- case PPIPE_DRIVER_STAT_GEN:
- memcpy( &ppp_udp_pkt->data,
- &ppp_priv_area->pipe_mgmt_stat,
- sizeof(pipe_mgmt_stat_t));
-
- memcpy(&ppp_udp_pkt->data+sizeof(pipe_mgmt_stat_t),
- &card->statistics, sizeof(global_stats_t));
-
- ppp_udp_pkt->cblock.result = 0;
- ppp_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
- break;
-
-
- /* FT1 MONITOR STATUS */
- case FT1_MONITOR_STATUS_CTRL:
-
- /* Enable FT1 MONITOR STATUS */
- if( ppp_udp_pkt->data[0] == 1) {
-
- if( rCount++ != 0 ) {
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if( ppp_udp_pkt->data[0] == 0) {
-
- if( --rCount != 0) {
- ppp_udp_pkt->cblock.result = 0;
- mbox->cmd.length = 1;
- break;
- }
- }
- goto udp_dflt_cmd;
-
- /* WARNING: FIXME: This should be fixed.
- * The FT1 Status Ctrl doesn't have a break
- * statment. Thus, no code must be inserted
- * HERE: between default and above case statement */
-
- default:
-udp_dflt_cmd:
-
- /* it's a board command */
- mbox->cmd.command = ppp_udp_pkt->cblock.command;
- mbox->cmd.length = ppp_udp_pkt->cblock.length;
-
- if(mbox->cmd.length) {
- memcpy(&mbox->data,(unsigned char *)ppp_udp_pkt->data,
- mbox->cmd.length);
- }
-
- /* run the command on the board */
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
-
- ppp_error(card, err, mbox);
- ++ppp_priv_area->pipe_mgmt_stat.
- UDP_PIPE_mgmt_adptr_cmnd_timeout;
- break;
- }
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_OK;
-
- /* copy the result back to our buffer */
- memcpy(&ppp_udp_pkt->cblock,mbox, sizeof(cblock_t));
-
- if(mbox->cmd.length) {
- memcpy(&ppp_udp_pkt->data,&mbox->data,mbox->cmd.length);
- }
-
- } /* end of switch */
- } /* end of else */
-
- /* Fill UDP TTL */
- ppp_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
- len = reply_udp(ppp_priv_area->udp_pkt_data, mbox->cmd.length);
-
- if (ppp_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- /* Make sure we are not already sending */
- if (!test_bit(SEND_CRIT,&card->wandev.critical)){
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_adptr;
- ppp_send(card,ppp_priv_area->udp_pkt_data,len,ppp_priv_area->protocol);
- }
-
- } else {
-
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
-
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, len);
- memcpy(buf,ppp_priv_area->udp_pkt_data, len);
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_stack;
-
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
- netif_rx(new_skb);
- dev->last_rx = jiffies;
-
- } else {
-
- ++ppp_priv_area->pipe_mgmt_stat.UDP_PIPE_mgmt_no_socket;
- printk(KERN_INFO "no socket buffers available!\n");
- }
- }
-
- ppp_priv_area->udp_pkt_lgth = 0;
-
- return;
-}
-
-/*=============================================================================
- * Initial the ppp_private_area structure.
- */
-static void init_ppp_priv_struct( ppp_private_area_t *ppp_priv_area )
-{
-
- memset(&ppp_priv_area->if_send_stat, 0, sizeof(if_send_stat_t));
- memset(&ppp_priv_area->rx_intr_stat, 0, sizeof(rx_intr_stat_t));
- memset(&ppp_priv_area->pipe_mgmt_stat, 0, sizeof(pipe_mgmt_stat_t));
-}
-
-/*============================================================================
- * Initialize Global Statistics
- */
-static void init_global_statistics( sdla_t *card )
-{
- memset(&card->statistics, 0, sizeof(global_stats_t));
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-static void init_ppp_tx_rx_buff( sdla_t *card )
-{
- ppp508_buf_info_t* info;
-
- if (card->hw.type == SDLA_S514) {
-
- info = (void*)(card->hw.dpmbase + PPP514_BUF_OFFS);
-
- card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
- info->txb_ptr);
-
- card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
- (info->txb_num - 1);
-
- card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
- info->rxb_ptr);
-
- card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
- (info->rxb_num - 1);
-
- } else {
-
- info = (void*)(card->hw.dpmbase + PPP508_BUF_OFFS);
-
- card->u.p.txbuf_base = (void*)(card->hw.dpmbase +
- (info->txb_ptr - PPP508_MB_VECT));
-
- card->u.p.txbuf_last = (ppp_buf_ctl_t*)card->u.p.txbuf_base +
- (info->txb_num - 1);
-
- card->u.p.rxbuf_base = (void*)(card->hw.dpmbase +
- (info->rxb_ptr - PPP508_MB_VECT));
-
- card->u.p.rxbuf_last = (ppp_buf_ctl_t*)card->u.p.rxbuf_base +
- (info->rxb_num - 1);
- }
-
- card->u.p.txbuf_next = (unsigned long*)&info->txb_nxt;
- card->u.p.rxbuf_next = (unsigned long*)&info->rxb1_ptr;
-
- card->u.p.rx_base = info->rxb_base;
- card->u.p.rx_top = info->rxb_end;
-
- card->u.p.txbuf = card->u.p.txbuf_base;
- card->rxmb = card->u.p.rxbuf_base;
-
-}
-
-/*=============================================================================
- * Read Connection Information (ie for Remote IP address assginment).
- * Called when ppp interface connected.
- */
-static int read_info( sdla_t *card )
-{
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- int err;
-
- struct ifreq if_info;
- struct sockaddr_in *if_data1, *if_data2;
- mm_segment_t fs;
-
- /* Set Local and remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
-
- fs = get_fs();
- set_fs(get_ds()); /* get user space block */
-
- /* Change the local and remote ip address of the interface.
- * This will also add in the destination route.
- */
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = ppp_priv_area->ip_local;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFADDR, &if_info );
- if_data2 = (struct sockaddr_in *)&if_info.ifr_dstaddr;
- if_data2->sin_addr.s_addr = ppp_priv_area->ip_remote;
- if_data2->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFDSTADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
- if (err) {
- printk (KERN_INFO "%s: Adding of route failed: %i\n",
- card->devname,err);
- printk (KERN_INFO "%s: Local : %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ppp_priv_area->ip_local));
- printk (KERN_INFO "%s: Remote: %u.%u.%u.%u\n",
- card->devname,NIPQUAD(ppp_priv_area->ip_remote));
- }
- return err;
-}
-
-/*=============================================================================
- * Remove Dynamic Route.
- * Called when ppp interface disconnected.
- */
-
-static void remove_route( sdla_t *card )
-{
-
- struct net_device *dev = card->wandev.dev;
- long ip_addr;
- int err;
-
- mm_segment_t fs;
- struct ifreq if_info;
- struct sockaddr_in *if_data1;
- struct in_device *in_dev = dev->ip_ptr;
- struct in_ifaddr *ifa = in_dev->ifa_list;
-
- ip_addr = ifa->ifa_local;
-
- /* Set Local and remote addresses */
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
-
- fs = get_fs();
- set_fs(get_ds()); /* get user space block */
-
- /* Change the local ip address of the interface to 0.
- * This will also delete the destination route.
- */
- if_data1 = (struct sockaddr_in *)&if_info.ifr_addr;
- if_data1->sin_addr.s_addr = 0;
- if_data1->sin_family = AF_INET;
- err = devinet_ioctl( SIOCSIFADDR, &if_info );
-
- set_fs(fs); /* restore old block */
-
-
- if (err) {
- printk (KERN_INFO "%s: Deleting dynamic route failed %d!\n",
- card->devname, err);
- return;
- }else{
- printk (KERN_INFO "%s: PPP Deleting dynamic route %u.%u.%u.%u successfuly\n",
- card->devname, NIPQUAD(ip_addr));
- }
- return;
-}
-
-/*=============================================================================
- * Perform the Interrupt Test by running the READ_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t *card )
-{
- ppp_mbox_t *mb = card->mbox;
- int err,i;
-
- err = ppp_set_intr_mode( card, 0x08 );
-
- if (err == CMD_OK) {
-
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
- /* Run command READ_CODE_VERSION */
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = PPP_READ_CODE_VERSION;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
- if (err != CMD_OK)
- ppp_error(card, err, mb);
- }
- }
- else return err;
-
- err = ppp_set_intr_mode( card, 0 );
- if (err != CMD_OK)
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. DRVSTATS or PTPIPEAB ?
- */
-static int udp_pkt_type( struct sk_buff *skb, sdla_t *card )
-{
- unsigned char *sendpacket;
- unsigned char buf2[5];
- ppp_udp_pkt_t *ppp_udp_pkt = (ppp_udp_pkt_t *)skb->data;
-
- sendpacket = skb->data;
- memcpy(&buf2, &card->wandev.udp_port, 2);
-
- if( ppp_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45 && /* IP packet */
- sendpacket[9] == 0x11 && /* UDP packet */
- sendpacket[22] == buf2[1] && /* UDP Port */
- sendpacket[23] == buf2[0] &&
- sendpacket[36] == 0x01 ) {
-
- if ( sendpacket[28] == 0x50 && /* PTPIPEAB: Signature */
- sendpacket[29] == 0x54 &&
- sendpacket[30] == 0x50 &&
- sendpacket[31] == 0x49 &&
- sendpacket[32] == 0x50 &&
- sendpacket[33] == 0x45 &&
- sendpacket[34] == 0x41 &&
- sendpacket[35] == 0x42 ){
-
- return UDP_PTPIPE_TYPE;
-
- } else if(sendpacket[28] == 0x44 && /* DRVSTATS: Signature */
- sendpacket[29] == 0x52 &&
- sendpacket[30] == 0x56 &&
- sendpacket[31] == 0x53 &&
- sendpacket[32] == 0x54 &&
- sendpacket[33] == 0x41 &&
- sendpacket[34] == 0x54 &&
- sendpacket[35] == 0x53 ){
-
- return UDP_DRVSTATS_TYPE;
-
- } else
- return UDP_INVALID_TYPE;
-
- } else
- return UDP_INVALID_TYPE;
-
-}
-
-/*============================================================================
- * Check to see if the packet to be transmitted contains a broadcast or
- * multicast source IP address.
- */
-
-static int chk_bcast_mcast_addr(sdla_t *card, struct net_device* dev,
- struct sk_buff *skb)
-{
- u32 src_ip_addr;
- u32 broadcast_ip_addr = 0;
- struct in_device *in_dev;
-
- /* read the IP source address from the outgoing packet */
- src_ip_addr = *(u32 *)(skb->data + 12);
-
- /* read the IP broadcast address for the device */
- in_dev = dev->ip_ptr;
- if(in_dev != NULL) {
- struct in_ifaddr *ifa= in_dev->ifa_list;
- if(ifa != NULL)
- broadcast_ip_addr = ifa->ifa_broadcast;
- else
- return 0;
- }
-
- /* check if the IP Source Address is a Broadcast address */
- if((dev->flags & IFF_BROADCAST) && (src_ip_addr == broadcast_ip_addr)) {
- printk(KERN_INFO "%s: Broadcast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- /* check if the IP Source Address is a Multicast address */
- if((ntohl(src_ip_addr) >= 0xE0000001) &&
- (ntohl(src_ip_addr) <= 0xFFFFFFFE)) {
- printk(KERN_INFO "%s: Multicast Source Address silently discarded\n",
- card->devname);
- return 1;
- }
-
- return 0;
-}
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-static int read_connection_info (sdla_t *card)
-{
- ppp_mbox_t *mb = card->mbox;
- struct net_device *dev = card->wandev.dev;
- ppp_private_area_t *ppp_priv_area = dev->priv;
- ppp508_connect_info_t *ppp508_connect_info;
- int err;
-
- memset(&mb->cmd, 0, sizeof(ppp_cmd_t));
- mb->cmd.length = 0;
- mb->cmd.command = PPP_GET_CONNECTION_INFO;
- err = sdla_exec(mb) ? mb->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK) {
- ppp_error(card, err, mb);
- ppp_priv_area->ip_remote = 0;
- ppp_priv_area->ip_local = 0;
- }
- else {
- ppp508_connect_info = (ppp508_connect_info_t *)mb->data;
- ppp_priv_area->ip_remote = ppp508_connect_info->ip_remote;
- ppp_priv_area->ip_local = ppp508_connect_info->ip_local;
-
- NEX_PRINTK(KERN_INFO "READ CONNECTION GOT IP ADDRESS %x, %x\n",
- ppp_priv_area->ip_remote,
- ppp_priv_area->ip_local);
- }
-
- return err;
-}
-
-/*===============================================================================
- * config_ppp
- *
- * Configure the ppp protocol and enable communications.
- *
- * The if_open function binds this function to the poll routine.
- * Therefore, this function will run every time the ppp interface
- * is brought up.
- *
- * If the communications are not enabled, proceed to configure
- * the card and enable communications.
- *
- * If the communications are enabled, it means that the interface
- * was shutdown by ether the user or driver. In this case, we
- * have to check that the IP addresses have not changed. If
- * the IP addresses changed, we have to reconfigure the firmware
- * and update the changed IP addresses. Otherwise, just exit.
- */
-static int config_ppp (sdla_t *card)
-{
-
- struct net_device *dev = card->wandev.dev;
- ppp_flags_t *flags = card->flags;
- ppp_private_area_t *ppp_priv_area = dev->priv;
-
- if (card->u.p.comm_enabled){
-
- if (ppp_priv_area->ip_local_tmp != ppp_priv_area->ip_local ||
- ppp_priv_area->ip_remote_tmp != ppp_priv_area->ip_remote){
-
- /* The IP addersses have changed, we must
- * stop the communications and reconfigure
- * the card. Reason: the firmware must know
- * the local and remote IP addresses. */
- disable_comm(card);
- wanpipe_set_state(card, WAN_DISCONNECTED);
- printk(KERN_INFO
- "%s: IP addresses changed!\n",
- card->devname);
- printk(KERN_INFO "%s: Restarting communications ...\n",
- card->devname);
- }else{
- /* IP addresses are the same and the link is up,
- * we don't have to do anything here. Therefore, exit */
- return 0;
- }
- }
-
- /* Record the new IP addreses */
- ppp_priv_area->ip_local = ppp_priv_area->ip_local_tmp;
- ppp_priv_area->ip_remote = ppp_priv_area->ip_remote_tmp;
-
- if (config508(dev, card)){
- printk(KERN_INFO "%s: Failed to configure PPP device\n",
- card->devname);
- return 0;
- }
-
- if (ppp_set_intr_mode(card, PPP_INTR_RXRDY|
- PPP_INTR_TXRDY|
- PPP_INTR_MODEM|
- PPP_INTR_DISC |
- PPP_INTR_OPEN |
- PPP_INTR_DROP_DTR |
- PPP_INTR_TIMER)) {
-
- printk(KERN_INFO "%s: Failed to configure board interrupts !\n",
- card->devname);
- return 0;
- }
-
- /* Turn off the transmit and timer interrupt */
- flags->imask &= ~(PPP_INTR_TXRDY | PPP_INTR_TIMER) ;
-
-
- /* If you are not the authenticator and any one of the protocol is
- * enabled then we call the set_out_bound_authentication.
- */
- if ( !card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)) {
- if ( ppp_set_outbnd_auth(card, ppp_priv_area) ){
- printk(KERN_INFO "%s: Outbound authentication failed !\n",
- card->devname);
- return 0;
- }
- }
-
- /* If you are the authenticator and any one of the protocol is enabled
- * then we call the set_in_bound_authentication.
- */
- if (card->u.p.authenticator && (ppp_priv_area->pap || ppp_priv_area->chap)){
- if (ppp_set_inbnd_auth(card, ppp_priv_area)){
- printk(KERN_INFO "%s: Inbound authentication failed !\n",
- card->devname);
- return 0;
- }
- }
-
- /* If we fail to enable communications here it's OK,
- * since the DTR timer will cause a disconnected, which
- * will retrigger communication in timer_intr() */
- if (ppp_comm_enable(card) == CMD_OK) {
- wanpipe_set_state(card, WAN_CONNECTING);
- init_ppp_tx_rx_buff(card);
- }
-
- return 0;
-}
-
-/*============================================================
- * ppp_poll
- *
- * Rationale:
- * We cannot manipulate the routing tables, or
- * ip addresses withing the interrupt. Therefore
- * we must perform such actons outside an interrupt
- * at a later time.
- *
- * Description:
- * PPP polling routine, responsible for
- * shutting down interfaces upon disconnect
- * and adding/removing routes.
- *
- * Usage:
- * This function is executed for each ppp
- * interface through a tq_schedule bottom half.
- *
- * trigger_ppp_poll() function is used to kick
- * the ppp_poll routine.
- */
-static void ppp_poll(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area;
- sdla_t *card;
- u8 check_gateway=0;
- ppp_flags_t *flags;
-
- if (!dev || (ppp_priv_area = dev->priv) == NULL)
- return;
-
- card = ppp_priv_area->card;
- flags = card->flags;
-
- /* Shutdown is in progress, stop what you are
- * doing and get out */
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* if_open() function has triggered the polling routine
- * to determine the configured IP addresses. Once the
- * addresses are found, trigger the chdlc configuration */
- if (test_bit(0,&ppp_priv_area->config_ppp)){
-
- ppp_priv_area->ip_local_tmp = get_ip_address(dev,WAN_LOCAL_IP);
- ppp_priv_area->ip_remote_tmp = get_ip_address(dev,WAN_POINTOPOINT_IP);
-
- if (ppp_priv_area->ip_local_tmp == ppp_priv_area->ip_remote_tmp &&
- card->u.p.ip_mode == WANOPT_PPP_HOST){
-
- if (++ppp_priv_area->ip_error > MAX_IP_ERRORS){
- printk(KERN_INFO "\n%s: --- WARNING ---\n",
- card->devname);
- printk(KERN_INFO "%s: The local IP address is the same as the\n",
- card->devname);
- printk(KERN_INFO "%s: Point-to-Point IP address.\n",
- card->devname);
- printk(KERN_INFO "%s: --- WARNING ---\n\n",
- card->devname);
- }else{
- clear_bit(POLL_CRIT,&card->wandev.critical);
- ppp_priv_area->poll_delay_timer.expires = jiffies+HZ;
- add_timer(&ppp_priv_area->poll_delay_timer);
- return;
- }
- }
-
- ppp_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->imask |= PPP_INTR_TIMER;
- ppp_priv_area->ip_error=0;
-
- clear_bit(0,&ppp_priv_area->config_ppp);
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
- }
-
- /* Dynamic interface implementation, as well as dynamic
- * routing. */
-
- switch (card->wandev.state) {
-
- case WAN_DISCONNECTED:
-
- /* If the dynamic interface configuration is on, and interface
- * is up, then bring down the netowrk interface */
-
- if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
- !test_bit(DEV_DOWN,&ppp_priv_area->interface_down) &&
- card->wandev.dev->flags & IFF_UP){
-
- printk(KERN_INFO "%s: Interface %s down.\n",
- card->devname,card->wandev.dev->name);
- change_dev_flags(card->wandev.dev,
- (card->wandev.dev->flags&~IFF_UP));
- set_bit(DEV_DOWN,&ppp_priv_area->interface_down);
- }else{
- /* We need to check if the local IP address is
- * zero. If it is, we shouldn't try to remove it.
- * For some reason the kernel crashes badly if
- * we try to remove the route twice */
-
- if (card->wandev.dev->flags & IFF_UP &&
- get_ip_address(card->wandev.dev,WAN_LOCAL_IP) &&
- card->u.p.ip_mode == WANOPT_PPP_PEER){
-
- remove_route(card);
- }
- }
- break;
-
- case WAN_CONNECTED:
-
- /* In SMP machine this code can execute before the interface
- * comes up. In this case, we must make sure that we do not
- * try to bring up the interface before dev_open() is finished */
-
-
- /* DEV_DOWN will be set only when we bring down the interface
- * for the very first time. This way we know that it was us
- * that brought the interface down */
-
- if (test_bit(DYN_OPT_ON,&ppp_priv_area->interface_down) &&
- test_bit(DEV_DOWN, &ppp_priv_area->interface_down) &&
- !(card->wandev.dev->flags & IFF_UP)){
-
- printk(KERN_INFO "%s: Interface %s up.\n",
- card->devname,card->wandev.dev->name);
-
- change_dev_flags(card->wandev.dev,(card->wandev.dev->flags|IFF_UP));
- clear_bit(DEV_DOWN,&ppp_priv_area->interface_down);
- check_gateway=1;
- }
-
- if ((card->u.p.ip_mode == WANOPT_PPP_PEER) &&
- test_bit(1,&Read_connection_info)) {
-
- process_route(card);
- clear_bit(1,&Read_connection_info);
- check_gateway=1;
- }
-
- if (ppp_priv_area->gateway && check_gateway)
- add_gateway(card,dev);
-
- break;
- }
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
-}
-
-/*============================================================
- * trigger_ppp_poll
- *
- * Description:
- * Add a ppp_poll() task into a tq_scheduler bh handler
- * for a specific interface. This will kick
- * the ppp_poll() routine at a later time.
- *
- * Usage:
- * Interrupts use this to defer a taks to
- * a polling routine.
- *
- */
-
-static void trigger_ppp_poll(struct net_device *dev)
-{
- ppp_private_area_t *ppp_priv_area;
- if ((ppp_priv_area=dev->priv) != NULL){
-
- sdla_t *card = ppp_priv_area->card;
-
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- return;
- }
-
- if (test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
- return;
- }
-
- schedule_work(&ppp_priv_area->poll_work);
- }
- return;
-}
-
-static void ppp_poll_delay (unsigned long dev_ptr)
-{
- struct net_device *dev = (struct net_device *)dev_ptr;
- trigger_ppp_poll(dev);
-}
-
-/*============================================================
- * detect_and_fix_tx_bug
- *
- * Description:
- * On connect, if the board tx buffer ptr is not the same
- * as the driver tx buffer ptr, we found a firmware bug.
- * Report the bug to the above layer. To fix the
- * error restart communications again.
- *
- * Usage:
- *
- */
-
-static int detect_and_fix_tx_bug (sdla_t *card)
-{
- if (((unsigned long)card->u.p.txbuf_base&0xFFF) != ((*card->u.p.txbuf_next)&0xFFF)){
- NEX_PRINTK(KERN_INFO "Major Error, Fix the bug\n");
- return 1;
- }
- return 0;
-}
-
-MODULE_LICENSE("GPL");
-
-/****** End *****************************************************************/
diff --git a/drivers/net/wan/sdla_x25.c b/drivers/net/wan/sdla_x25.c
deleted file mode 100644
index 63f846d6f3a..00000000000
--- a/drivers/net/wan/sdla_x25.c
+++ /dev/null
@@ -1,5497 +0,0 @@
-/*****************************************************************************
-* sdla_x25.c WANPIPE(tm) Multiprotocol WAN Link Driver. X.25 module.
-*
-* Author: Nenad Corbic <ncorbic@sangoma.com>
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Apr 03, 2001 Nenad Corbic o Fixed the rx_skb=NULL bug in x25 in rx_intr().
-* Dec 26, 2000 Nenad Corbic o Added a new polling routine, that uses
-* a kernel timer (more efficient).
-* Dec 25, 2000 Nenad Corbic o Updated for 2.4.X kernel
-* Jul 26, 2000 Nenad Corbic o Increased the local packet buffering
-* for API to 4096+header_size.
-* Jul 17, 2000 Nenad Corbic o Fixed the x25 startup bug. Enable
-* communications only after all interfaces
-* come up. HIGH SVC/PVC is used to calculate
-* the number of channels.
-* Enable protocol only after all interfaces
-* are enabled.
-* Jul 10, 2000 Nenad Corbic o Fixed the M_BIT bug.
-* Apr 25, 2000 Nenad Corbic o Pass Modem messages to the API.
-* Disable idle timeout in X25 API.
-* Apr 14, 2000 Nenad Corbic o Fixed: Large LCN number support.
-* Maximum LCN number is 4095.
-* Maximum number of X25 channels is 255.
-* Apr 06, 2000 Nenad Corbic o Added SMP Support.
-* Mar 29, 2000 Nenad Corbic o Added support for S514 PCI Card
-* Mar 23, 2000 Nenad Corbic o Improved task queue, BH handling.
-* Mar 14, 2000 Nenad Corbic o Updated Protocol Violation handling
-* routines. Bug Fix.
-* Mar 10, 2000 Nenad Corbic o Bug Fix: corrupted mbox recovery.
-* Mar 09, 2000 Nenad Corbic o Fixed the auto HDLC bug.
-* Mar 08, 2000 Nenad Corbic o Fixed LAPB HDLC startup problems.
-* Application must bring the link up
-* before tx/rx, and bring the
-* link down on close().
-* Mar 06, 2000 Nenad Corbic o Added an option for logging call setup
-* information.
-* Feb 29, 2000 Nenad Corbic o Added support for LAPB HDLC API
-* Feb 25, 2000 Nenad Corbic o Fixed the modem failure handling.
-* No Modem OOB message will be passed
-* to the user.
-* Feb 21, 2000 Nenad Corbic o Added Xpipemon Debug Support
-* Dec 30, 1999 Nenad Corbic o Socket based X25API
-* Sep 17, 1998 Jaspreet Singh o Updates for 2.2.X kernel
-* Mar 15, 1998 Alan Cox o 2.1.x porting
-* Dec 19, 1997 Jaspreet Singh o Added multi-channel IPX support
-* Nov 27, 1997 Jaspreet Singh o Added protection against enabling of irqs
-* when they are disabled.
-* Nov 17, 1997 Farhan Thawar o Added IPX support
-* o Changed if_send() to now buffer packets when
-* the board is busy
-* o Removed queueing of packets via the polling
-* routing
-* o Changed if_send() critical flags to properly
-* handle race conditions
-* Nov 06, 1997 Farhan Thawar o Added support for SVC timeouts
-* o Changed PVC encapsulation to ETH_P_IP
-* Jul 21, 1997 Jaspreet Singh o Fixed freeing up of buffers using kfree()
-* when packets are received.
-* Mar 11, 1997 Farhan Thawar Version 3.1.1
-* o added support for V35
-* o changed if_send() to return 0 if
-* wandev.critical() is true
-* o free socket buffer in if_send() if
-* returning 0
-* o added support for single '@' address to
-* accept all incoming calls
-* o fixed bug in set_chan_state() to disconnect
-* Jan 15, 1997 Gene Kozin Version 3.1.0
-* o implemented exec() entry point
-* Jan 07, 1997 Gene Kozin Initial version.
-*****************************************************************************/
-
-/*======================================================
- * Includes
- *=====================================================*/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/ctype.h>
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/workqueue.h>
-#include <linux/jiffies.h> /* time_after() macro */
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <asm/atomic.h>
-#include <linux/delay.h> /* Experimental delay */
-
-#include <asm/uaccess.h>
-
-#include <linux/if.h>
-#include <linux/if_arp.h>
-#include <linux/sdla_x25.h> /* X.25 firmware API definitions */
-#include <linux/if_wanpipe_common.h>
-#include <linux/if_wanpipe.h>
-
-
-/*======================================================
- * Defines & Macros
- *=====================================================*/
-
-
-#define CMD_OK 0 /* normal firmware return code */
-#define CMD_TIMEOUT 0xFF /* firmware command timed out */
-#define MAX_CMD_RETRY 10 /* max number of firmware retries */
-
-#define X25_CHAN_MTU 4096 /* unfragmented logical channel MTU */
-#define X25_HRDHDR_SZ 7 /* max encapsulation header size */
-#define X25_CONCT_TMOUT (90*HZ) /* link connection timeout */
-#define X25_RECON_TMOUT (10*HZ) /* link connection timeout */
-#define CONNECT_TIMEOUT (90*HZ) /* link connection timeout */
-#define HOLD_DOWN_TIME (30*HZ) /* link hold down time */
-#define MAX_BH_BUFF 10
-#define M_BIT 0x01
-
-//#define PRINT_DEBUG 1
-#ifdef PRINT_DEBUG
-#define DBG_PRINTK(format, a...) printk(format, ## a)
-#else
-#define DBG_PRINTK(format, a...)
-#endif
-
-#define TMR_INT_ENABLED_POLL_ACTIVE 0x01
-#define TMR_INT_ENABLED_POLL_CONNECT_ON 0x02
-#define TMR_INT_ENABLED_POLL_CONNECT_OFF 0x04
-#define TMR_INT_ENABLED_POLL_DISCONNECT 0x08
-#define TMR_INT_ENABLED_CMD_EXEC 0x10
-#define TMR_INT_ENABLED_UPDATE 0x20
-#define TMR_INT_ENABLED_UDP_PKT 0x40
-
-#define MAX_X25_ADDR_SIZE 16
-#define MAX_X25_DATA_SIZE 129
-#define MAX_X25_FACL_SIZE 110
-
-#define TRY_CMD_AGAIN 2
-#define DELAY_RESULT 1
-#define RETURN_RESULT 0
-
-#define DCD(x) (x & 0x03 ? "HIGH" : "LOW")
-#define CTS(x) (x & 0x05 ? "HIGH" : "LOW")
-
-
-/* Driver will not write log messages about
- * modem status if defined.*/
-#define MODEM_NOT_LOG 1
-
-/*====================================================
- * For IPXWAN
- *===================================================*/
-
-#define CVHexToAscii(b) (((unsigned char)(b) > (unsigned char)9) ? ((unsigned char)'A' + ((unsigned char)(b) - (unsigned char)10)) : ((unsigned char)'0' + (unsigned char)(b)))
-
-
-/*====================================================
- * MEMORY DEBUGGING FUNCTION
- *====================================================
-
-#define KMEM_SAFETYZONE 8
-
-static void * dbg_kmalloc(unsigned int size, int prio, int line) {
- int i = 0;
- void * v = kmalloc(size+sizeof(unsigned int)+2*KMEM_SAFETYZONE*8,prio);
- char * c1 = v;
- c1 += sizeof(unsigned int);
- *((unsigned int *)v) = size;
-
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- c1[0] = 'D'; c1[1] = 'E'; c1[2] = 'A'; c1[3] = 'D';
- c1[4] = 'B'; c1[5] = 'E'; c1[6] = 'E'; c1[7] = 'F';
- c1 += 8;
- }
- c1 += size;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- c1[0] = 'M'; c1[1] = 'U'; c1[2] = 'N'; c1[3] = 'G';
- c1[4] = 'W'; c1[5] = 'A'; c1[6] = 'L'; c1[7] = 'L';
- c1 += 8;
- }
- v = ((char *)v) + sizeof(unsigned int) + KMEM_SAFETYZONE*8;
- printk(KERN_INFO "line %d kmalloc(%d,%d) = %p\n",line,size,prio,v);
- return v;
-}
-static void dbg_kfree(void * v, int line) {
- unsigned int * sp = (unsigned int *)(((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8));
- unsigned int size = *sp;
- char * c1 = ((char *)v) - KMEM_SAFETYZONE*8;
- int i = 0;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- if ( c1[0] != 'D' || c1[1] != 'E' || c1[2] != 'A' || c1[3] != 'D'
- || c1[4] != 'B' || c1[5] != 'E' || c1[6] != 'E' || c1[7] != 'F') {
- printk(KERN_INFO "kmalloced block at %p has been corrupted (underrun)!\n",v);
- printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
- c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
- }
- c1 += 8;
- }
- c1 += size;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- if ( c1[0] != 'M' || c1[1] != 'U' || c1[2] != 'N' || c1[3] != 'G'
- || c1[4] != 'W' || c1[5] != 'A' || c1[6] != 'L' || c1[7] != 'L'
- ) {
- printk(KERN_INFO "kmalloced block at %p has been corrupted (overrun):\n",v);
- printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
- c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
- }
- c1 += 8;
- }
- printk(KERN_INFO "line %d kfree(%p)\n",line,v);
- v = ((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8);
- kfree(v);
-}
-
-#define kmalloc(x,y) dbg_kmalloc(x,y,__LINE__)
-#define kfree(x) dbg_kfree(x,__LINE__)
-
-==============================================================*/
-
-
-
-/*===============================================
- * Data Structures
- *===============================================*/
-
-
-/*========================================================
- * Name: x25_channel
- *
- * Purpose: To hold private informaton for each
- * logical channel.
- *
- * Rationale: Per-channel debugging is possible if each
- * channel has its own private area.
- *
- * Assumptions:
- *
- * Description: This is an extention of the struct net_device
- * we create for each network interface to keep
- * the rest of X.25 channel-specific data.
- *
- * Construct: Typedef
- */
-typedef struct x25_channel
-{
- wanpipe_common_t common; /* common area for x25api and socket */
- char name[WAN_IFNAME_SZ+1]; /* interface name, ASCIIZ */
- char addr[WAN_ADDRESS_SZ+1]; /* media address, ASCIIZ */
- unsigned tx_pkt_size;
- unsigned short protocol; /* ethertype, 0 - multiplexed */
- char drop_sequence; /* mark sequence for dropping */
- unsigned long state_tick; /* time of the last state change */
- unsigned idle_timeout; /* sec, before disconnecting */
- unsigned long i_timeout_sofar; /* # of sec's we've been idle */
- unsigned hold_timeout; /* sec, before re-connecting */
- unsigned long tick_counter; /* counter for transmit time out */
- char devtint; /* Weather we should dev_tint() */
- struct sk_buff* rx_skb; /* receive socket buffer */
- struct sk_buff* tx_skb; /* transmit socket buffer */
-
- bh_data_t *bh_head; /* Circular buffer for x25api_bh */
- unsigned long tq_working;
- volatile int bh_write;
- volatile int bh_read;
- atomic_t bh_buff_used;
-
- sdla_t* card; /* -> owner */
- struct net_device *dev; /* -> bound devce */
-
- int ch_idx;
- unsigned char enable_IPX;
- unsigned long network_number;
- struct net_device_stats ifstats; /* interface statistics */
- unsigned short transmit_length;
- unsigned short tx_offset;
- char transmit_buffer[X25_CHAN_MTU+sizeof(x25api_hdr_t)];
-
- if_send_stat_t if_send_stat;
- rx_intr_stat_t rx_intr_stat;
- pipe_mgmt_stat_t pipe_mgmt_stat;
-
- unsigned long router_start_time; /* Router start time in seconds */
- unsigned long router_up_time;
-
-} x25_channel_t;
-
-/* FIXME Take this out */
-
-#ifdef NEX_OLD_CALL_INFO
-typedef struct x25_call_info
-{
- char dest[17]; PACKED;/* ASCIIZ destination address */
- char src[17]; PACKED;/* ASCIIZ source address */
- char nuser; PACKED;/* number of user data bytes */
- unsigned char user[127]; PACKED;/* user data */
- char nfacil; PACKED;/* number of facilities */
- struct
- {
- unsigned char code; PACKED;
- unsigned char parm; PACKED;
- } facil[64]; /* facilities */
-} x25_call_info_t;
-#else
-typedef struct x25_call_info
-{
- char dest[MAX_X25_ADDR_SIZE] PACKED;/* ASCIIZ destination address */
- char src[MAX_X25_ADDR_SIZE] PACKED;/* ASCIIZ source address */
- unsigned char nuser PACKED;
- unsigned char user[MAX_X25_DATA_SIZE] PACKED;/* user data */
- unsigned char nfacil PACKED;
- unsigned char facil[MAX_X25_FACL_SIZE] PACKED;
- unsigned short lcn PACKED;
-} x25_call_info_t;
-#endif
-
-
-
-/*===============================================
- * Private Function Prototypes
- *==============================================*/
-
-
-/*=================================================
- * WAN link driver entry points. These are
- * called by the WAN router module.
- */
-static int update(struct wan_device* wandev);
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf);
-static int del_if(struct wan_device* wandev, struct net_device* dev);
-static void disable_comm (sdla_t* card);
-static void disable_comm_shutdown(sdla_t *card);
-
-
-
-/*=================================================
- * WANPIPE-specific entry points
- */
-static int wpx_exec (struct sdla* card, void* u_cmd, void* u_data);
-static void x25api_bh(struct net_device *dev);
-static int x25api_bh_cleanup(struct net_device *dev);
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb);
-
-
-/*=================================================
- * Network device interface
- */
-static int if_init(struct net_device* dev);
-static int if_open(struct net_device* dev);
-static int if_close(struct net_device* dev);
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr, unsigned len);
-static int if_rebuild_hdr (struct sk_buff* skb);
-static int if_send(struct sk_buff* skb, struct net_device* dev);
-static struct net_device_stats *if_stats(struct net_device* dev);
-
-static void if_tx_timeout(struct net_device *dev);
-
-/*=================================================
- * Interrupt handlers
- */
-static void wpx_isr (sdla_t *);
-static void rx_intr (sdla_t *);
-static void tx_intr (sdla_t *);
-static void status_intr (sdla_t *);
-static void event_intr (sdla_t *);
-static void spur_intr (sdla_t *);
-static void timer_intr (sdla_t *);
-
-static int tx_intr_send(sdla_t *card, struct net_device *dev);
-static struct net_device *move_dev_to_next(sdla_t *card,
- struct net_device *dev);
-
-/*=================================================
- * Background polling routines
- */
-static void wpx_poll (sdla_t* card);
-static void poll_disconnected (sdla_t* card);
-static void poll_connecting (sdla_t* card);
-static void poll_active (sdla_t* card);
-static void trigger_x25_poll(sdla_t *card);
-static void x25_timer_routine(unsigned long data);
-
-
-
-/*=================================================
- * X.25 firmware interface functions
- */
-static int x25_get_version (sdla_t* card, char* str);
-static int x25_configure (sdla_t* card, TX25Config* conf);
-static int hdlc_configure (sdla_t* card, TX25Config* conf);
-static int set_hdlc_level (sdla_t* card);
-static int x25_get_err_stats (sdla_t* card);
-static int x25_get_stats (sdla_t* card);
-static int x25_set_intr_mode (sdla_t* card, int mode);
-static int x25_close_hdlc (sdla_t* card);
-static int x25_open_hdlc (sdla_t* card);
-static int x25_setup_hdlc (sdla_t* card);
-static int x25_set_dtr (sdla_t* card, int dtr);
-static int x25_get_chan_conf (sdla_t* card, x25_channel_t* chan);
-static int x25_place_call (sdla_t* card, x25_channel_t* chan);
-static int x25_accept_call (sdla_t* card, int lcn, int qdm);
-static int x25_clear_call (sdla_t* card, int lcn, int cause, int diagn);
-static int x25_send (sdla_t* card, int lcn, int qdm, int len, void* buf);
-static int x25_fetch_events (sdla_t* card);
-static int x25_error (sdla_t* card, int err, int cmd, int lcn);
-
-/*=================================================
- * X.25 asynchronous event handlers
- */
-static int incoming_call (sdla_t* card, int cmd, int lcn, TX25Mbox* mb);
-static int call_accepted (sdla_t* card, int cmd, int lcn, TX25Mbox* mb);
-static int call_cleared (sdla_t* card, int cmd, int lcn, TX25Mbox* mb);
-static int timeout_event (sdla_t* card, int cmd, int lcn, TX25Mbox* mb);
-static int restart_event (sdla_t* card, int cmd, int lcn, TX25Mbox* mb);
-
-
-/*=================================================
- * Miscellaneous functions
- */
-static int connect (sdla_t* card);
-static int disconnect (sdla_t* card);
-static struct net_device* get_dev_by_lcn(struct wan_device* wandev,
- unsigned lcn);
-static int chan_connect(struct net_device* dev);
-static int chan_disc(struct net_device* dev);
-static void set_chan_state(struct net_device* dev, int state);
-static int chan_send(struct net_device *dev, void* buff, unsigned data_len,
- unsigned char tx_intr);
-static unsigned char bps_to_speed_code (unsigned long bps);
-static unsigned int dec_to_uint (unsigned char* str, int len);
-static unsigned int hex_to_uint (unsigned char*, int);
-static void parse_call_info (unsigned char*, x25_call_info_t*);
-static struct net_device *find_channel(sdla_t *card, unsigned lcn);
-static void bind_lcn_to_dev(sdla_t *card, struct net_device *dev, unsigned lcn);
-static void setup_for_delayed_transmit(struct net_device *dev,
- void *buf, unsigned len);
-
-
-/*=================================================
- * X25 API Functions
- */
-static int wanpipe_pull_data_in_skb(sdla_t *card, struct net_device *dev,
- struct sk_buff **);
-static void timer_intr_exec(sdla_t *, unsigned char);
-static int execute_delayed_cmd(sdla_t *card, struct net_device *dev,
- mbox_cmd_t *usr_cmd, char bad_cmd);
-static int api_incoming_call (sdla_t*, TX25Mbox *, int);
-static int alloc_and_init_skb_buf (sdla_t *,struct sk_buff **, int);
-static void send_delayed_cmd_result(sdla_t *card, struct net_device *dev,
- TX25Mbox* mbox);
-static int clear_confirm_event (sdla_t *, TX25Mbox*);
-static void send_oob_msg (sdla_t *card, struct net_device *dev, TX25Mbox *mbox);
-static int timer_intr_cmd_exec(sdla_t *card);
-static void api_oob_event (sdla_t *card,TX25Mbox *mbox);
-static int check_bad_command(sdla_t *card, struct net_device *dev);
-static int channel_disconnect(sdla_t* card, struct net_device *dev);
-static void hdlc_link_down (sdla_t*);
-
-/*=================================================
- * XPIPEMON Functions
- */
-static int process_udp_mgmt_pkt(sdla_t *);
-static int udp_pkt_type( struct sk_buff *, sdla_t*);
-static int reply_udp( unsigned char *, unsigned int);
-static void init_x25_channel_struct( x25_channel_t *);
-static void init_global_statistics( sdla_t *);
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t *card,
- struct net_device *dev,
- struct sk_buff *skb, int lcn);
-static unsigned short calc_checksum (char *, int);
-
-
-
-/*=================================================
- * IPX functions
- */
-static void switch_net_numbers(unsigned char *, unsigned long, unsigned char);
-static int handle_IPXWAN(unsigned char *, char *, unsigned char ,
- unsigned long , unsigned short );
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-static void S508_S514_lock(sdla_t *, unsigned long *);
-static void S508_S514_unlock(sdla_t *, unsigned long *);
-
-
-/*=================================================
- * Global Variables
- *=================================================*/
-
-
-
-/*=================================================
- * Public Functions
- *=================================================*/
-
-
-
-
-/*===================================================================
- * wpx_init: X.25 Protocol Initialization routine.
- *
- * Purpose: To initialize the protocol/firmware.
- *
- * Rationale: This function is called by setup() function, in
- * sdlamain.c, to dynamically setup the x25 protocol.
- * This is the first protocol specific function, which
- * executes once on startup.
- *
- * Description: This procedure initializes the x25 firmware and
- * sets up the mailbox, transmit and receive buffer
- * pointers. It also initializes all debugging structures
- * and sets up the X25 environment.
- *
- * Sets up hardware options defined by user in [wanpipe#]
- * section of wanpipe#.conf configuration file.
- *
- * At this point adapter is completely initialized
- * and X.25 firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the
- * adapter data space.
- *
- * Called by: setup() function in sdlamain.c
- *
- * Assumptions: None
- *
- * Warnings: None
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-
-int wpx_init (sdla_t* card, wandev_conf_t* conf)
-{
- union{
- char str[80];
- TX25Config cfg;
- } u;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_X25){
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id)
- ;
- return -EINVAL;
- }
-
- /* Initialize protocol-specific fields */
- card->mbox = (void*)(card->hw.dpmbase + X25_MBOX_OFFS);
- card->rxmb = (void*)(card->hw.dpmbase + X25_RXMBOX_OFFS);
- card->flags = (void*)(card->hw.dpmbase + X25_STATUS_OFFS);
-
- /* Initialize for S514 Card */
- if(card->hw.type == SDLA_S514) {
- card->mbox += X25_MB_VECTOR;
- card->flags += X25_MB_VECTOR;
- card->rxmb += X25_MB_VECTOR;
- }
-
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
- if (x25_get_version(card, NULL) || x25_get_version(card, u.str))
- return -EIO;
-
-
- /* X25 firmware can run ether in X25 or LAPB HDLC mode.
- * Check the user defined option and configure accordingly */
- if (conf->u.x25.LAPB_hdlc_only == WANOPT_YES){
- if (set_hdlc_level(card) != CMD_OK){
- return -EIO;
- }else{
- printk(KERN_INFO "%s: running LAP_B HDLC firmware v%s\n",
- card->devname, u.str);
- }
- card->u.x.LAPB_hdlc = 1;
- }else{
- printk(KERN_INFO "%s: running X.25 firmware v%s\n",
- card->devname, u.str);
- card->u.x.LAPB_hdlc = 0;
- }
-
- /* Configure adapter. Here we set resonable defaults, then parse
- * device configuration structure and set configuration options.
- * Most configuration options are verified and corrected (if
- * necessary) since we can't rely on the adapter to do so.
- */
- memset(&u.cfg, 0, sizeof(u.cfg));
- u.cfg.t1 = 3;
- u.cfg.n2 = 10;
- u.cfg.autoHdlc = 1; /* automatic HDLC connection */
- u.cfg.hdlcWindow = 7;
- u.cfg.pktWindow = 2;
- u.cfg.station = 1; /* DTE */
- u.cfg.options = 0x0090; /* disable D-bit pragmatics */
- u.cfg.ccittCompat = 1988;
- u.cfg.t10t20 = 30;
- u.cfg.t11t21 = 30;
- u.cfg.t12t22 = 30;
- u.cfg.t13t23 = 30;
- u.cfg.t16t26 = 30;
- u.cfg.t28 = 30;
- u.cfg.r10r20 = 5;
- u.cfg.r12r22 = 5;
- u.cfg.r13r23 = 5;
- u.cfg.responseOpt = 1; /* RR's after every packet */
-
- if (card->u.x.LAPB_hdlc){
- u.cfg.hdlcMTU = 1027;
- }
-
- if (conf->u.x25.x25_conf_opt){
- u.cfg.options = conf->u.x25.x25_conf_opt;
- }
-
- if (conf->clocking != WANOPT_EXTERNAL)
- u.cfg.baudRate = bps_to_speed_code(conf->bps);
-
- if (conf->station != WANOPT_DTE){
- u.cfg.station = 0; /* DCE mode */
- }
-
- if (conf->interface != WANOPT_RS232 ){
- u.cfg.hdlcOptions |= 0x80; /* V35 mode */
- }
-
- /* adjust MTU */
- if (!conf->mtu || (conf->mtu >= 1024))
- card->wandev.mtu = 1024;
- else if (conf->mtu >= 512)
- card->wandev.mtu = 512;
- else if (conf->mtu >= 256)
- card->wandev.mtu = 256;
- else if (conf->mtu >= 128)
- card->wandev.mtu = 128;
- else
- card->wandev.mtu = 64;
-
- u.cfg.defPktSize = u.cfg.pktMTU = card->wandev.mtu;
-
- if (conf->u.x25.hi_pvc){
- card->u.x.hi_pvc = min_t(unsigned int, conf->u.x25.hi_pvc, MAX_LCN_NUM);
- card->u.x.lo_pvc = min_t(unsigned int, conf->u.x25.lo_pvc, card->u.x.hi_pvc);
- }
-
- if (conf->u.x25.hi_svc){
- card->u.x.hi_svc = min_t(unsigned int, conf->u.x25.hi_svc, MAX_LCN_NUM);
- card->u.x.lo_svc = min_t(unsigned int, conf->u.x25.lo_svc, card->u.x.hi_svc);
- }
-
- /* Figure out the total number of channels to configure */
- card->u.x.num_of_ch = 0;
- if (card->u.x.hi_svc != 0){
- card->u.x.num_of_ch = (card->u.x.hi_svc - card->u.x.lo_svc) + 1;
- }
- if (card->u.x.hi_pvc != 0){
- card->u.x.num_of_ch += (card->u.x.hi_pvc - card->u.x.lo_pvc) + 1;
- }
-
- if (card->u.x.num_of_ch == 0){
- printk(KERN_INFO "%s: ERROR, Minimum number of PVC/SVC channels is 1 !\n"
- "%s: Please set the Lowest/Highest PVC/SVC values !\n",
- card->devname,card->devname);
- return -ECHRNG;
- }
-
- u.cfg.loPVC = card->u.x.lo_pvc;
- u.cfg.hiPVC = card->u.x.hi_pvc;
- u.cfg.loTwoWaySVC = card->u.x.lo_svc;
- u.cfg.hiTwoWaySVC = card->u.x.hi_svc;
-
- if (conf->u.x25.hdlc_window)
- u.cfg.hdlcWindow = min_t(unsigned int, conf->u.x25.hdlc_window, 7);
- if (conf->u.x25.pkt_window)
- u.cfg.pktWindow = min_t(unsigned int, conf->u.x25.pkt_window, 7);
-
- if (conf->u.x25.t1)
- u.cfg.t1 = min_t(unsigned int, conf->u.x25.t1, 30);
- if (conf->u.x25.t2)
- u.cfg.t2 = min_t(unsigned int, conf->u.x25.t2, 29);
- if (conf->u.x25.t4)
- u.cfg.t4 = min_t(unsigned int, conf->u.x25.t4, 240);
- if (conf->u.x25.n2)
- u.cfg.n2 = min_t(unsigned int, conf->u.x25.n2, 30);
-
- if (conf->u.x25.t10_t20)
- u.cfg.t10t20 = min_t(unsigned int, conf->u.x25.t10_t20,255);
- if (conf->u.x25.t11_t21)
- u.cfg.t11t21 = min_t(unsigned int, conf->u.x25.t11_t21,255);
- if (conf->u.x25.t12_t22)
- u.cfg.t12t22 = min_t(unsigned int, conf->u.x25.t12_t22,255);
- if (conf->u.x25.t13_t23)
- u.cfg.t13t23 = min_t(unsigned int, conf->u.x25.t13_t23,255);
- if (conf->u.x25.t16_t26)
- u.cfg.t16t26 = min_t(unsigned int, conf->u.x25.t16_t26, 255);
- if (conf->u.x25.t28)
- u.cfg.t28 = min_t(unsigned int, conf->u.x25.t28, 255);
-
- if (conf->u.x25.r10_r20)
- u.cfg.r10r20 = min_t(unsigned int, conf->u.x25.r10_r20,250);
- if (conf->u.x25.r12_r22)
- u.cfg.r12r22 = min_t(unsigned int, conf->u.x25.r12_r22,250);
- if (conf->u.x25.r13_r23)
- u.cfg.r13r23 = min_t(unsigned int, conf->u.x25.r13_r23,250);
-
-
- if (conf->u.x25.ccitt_compat)
- u.cfg.ccittCompat = conf->u.x25.ccitt_compat;
-
- /* initialize adapter */
- if (card->u.x.LAPB_hdlc){
- if (hdlc_configure(card, &u.cfg) != CMD_OK)
- return -EIO;
- }else{
- if (x25_configure(card, &u.cfg) != CMD_OK)
- return -EIO;
- }
-
- if ((x25_close_hdlc(card) != CMD_OK) || /* close HDLC link */
- (x25_set_dtr(card, 0) != CMD_OK)) /* drop DTR */
- return -EIO;
-
- /* Initialize protocol-specific fields of adapter data space */
- card->wandev.bps = conf->bps;
- card->wandev.interface = conf->interface;
- card->wandev.clocking = conf->clocking;
- card->wandev.station = conf->station;
- card->isr = &wpx_isr;
- card->poll = NULL; //&wpx_poll;
- card->disable_comm = &disable_comm;
- card->exec = &wpx_exec;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
-
- /* WARNING: This function cannot exit with an error
- * after the change of state */
- card->wandev.state = WAN_DISCONNECTED;
-
- card->wandev.enable_tx_int = 0;
- card->irq_dis_if_send_count = 0;
- card->irq_dis_poll_count = 0;
- card->u.x.tx_dev = NULL;
- card->u.x.no_dev = 0;
-
-
- /* Configure for S514 PCI Card */
- if (card->hw.type == SDLA_S514) {
- card->u.x.hdlc_buf_status =
- (volatile unsigned char *)
- (card->hw.dpmbase + X25_MB_VECTOR+ X25_MISC_HDLC_BITS);
- }else{
- card->u.x.hdlc_buf_status =
- (volatile unsigned char *)(card->hw.dpmbase + X25_MISC_HDLC_BITS);
- }
-
- card->u.x.poll_device=NULL;
- card->wandev.udp_port = conf->udp_port;
-
- /* Enable or disable call setup logging */
- if (conf->u.x25.logging == WANOPT_YES){
- printk(KERN_INFO "%s: Enabling Call Logging.\n",
- card->devname);
- card->u.x.logging = 1;
- }else{
- card->u.x.logging = 0;
- }
-
- /* Enable or disable modem status reporting */
- if (conf->u.x25.oob_on_modem == WANOPT_YES){
- printk(KERN_INFO "%s: Enabling OOB on Modem change.\n",
- card->devname);
- card->u.x.oob_on_modem = 1;
- }else{
- card->u.x.oob_on_modem = 0;
- }
-
- init_global_statistics(card);
-
- INIT_WORK(&card->u.x.x25_poll_work, (void *)wpx_poll, card);
-
- init_timer(&card->u.x.x25_timer);
- card->u.x.x25_timer.data = (unsigned long)card;
- card->u.x.x25_timer.function = x25_timer_routine;
-
- return 0;
-}
-
-/*=========================================================
- * WAN Device Driver Entry Points
- *========================================================*/
-
-/*============================================================
- * Name: update(), Update device status & statistics.
- *
- * Purpose: To provide debugging and statitical
- * information to the /proc file system.
- * /proc/net/wanrouter/wanpipe#
- *
- * Rationale: The /proc file system is used to collect
- * information about the kernel and drivers.
- * Using the /proc file system the user
- * can see exactly what the sangoma drivers are
- * doing. And in what state they are in.
- *
- * Description: Collect all driver statistical information
- * and pass it to the top laywer.
- *
- * Since we have to execute a debugging command,
- * to obtain firmware statitics, we trigger a
- * UPDATE function within the timer interrtup.
- * We wait until the timer update is complete.
- * Once complete return the appropriate return
- * code to indicate that the update was successful.
- *
- * Called by: device_stat() in wanmain.c
- *
- * Assumptions:
- *
- * Warnings: This function will degrade the performance
- * of the router, since it uses the mailbox.
- *
- * Return: 0 OK
- * <0 Failed (or busy).
- */
-
-static int update(struct wan_device* wandev)
-{
- volatile sdla_t* card;
- TX25Status* status;
- unsigned long timeout;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- if (test_bit(SEND_CRIT, (void*)&wandev->critical))
- return -EAGAIN;
-
- if (!wandev->dev)
- return -ENODEV;
-
- card = wandev->private;
- status = card->flags;
-
- card->u.x.timer_int_enabled |= TMR_INT_ENABLED_UPDATE;
- status->imask |= INTR_ON_TIMER;
- timeout = jiffies;
-
- for (;;){
- if (!(card->u.x.timer_int_enabled & TMR_INT_ENABLED_UPDATE)){
- break;
- }
- if (time_after(jiffies, timeout + 1*HZ)){
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
- return 0;
-}
-
-
-/*===================================================================
- * Name: new_if
- *
- * Purpose: To allocate and initialize resources for a
- * new logical channel.
- *
- * Rationale: A new channel can be added dynamically via
- * ioctl call.
- *
- * Description: Allocate a private channel structure, x25_channel_t.
- * Parse the user interface options from wanpipe#.conf
- * configuration file.
- * Bind the private are into the network device private
- * area pointer (dev->priv).
- * Prepare the network device structure for registration.
- *
- * Called by: ROUTER_IFNEW Ioctl call, from wanrouter_ioctl()
- * (wanmain.c)
- *
- * Assumptions: None
- *
- * Warnings: None
- *
- * Return: 0 Ok
- * <0 Failed (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf)
-{
- sdla_t* card = wandev->private;
- x25_channel_t* chan;
- int err = 0;
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)){
- printk(KERN_INFO "%s: invalid interface name!\n",
- card->devname);
- return -EINVAL;
- }
-
- if(card->wandev.new_if_cnt++ > 0 && card->u.x.LAPB_hdlc) {
- printk(KERN_INFO "%s: Error: Running LAPB HDLC Mode !\n",
- card->devname);
- printk(KERN_INFO
- "%s: Maximum number of network interfaces must be one !\n",
- card->devname);
- return -EEXIST;
- }
-
- /* allocate and initialize private data */
- chan = kmalloc(sizeof(x25_channel_t), GFP_ATOMIC);
- if (chan == NULL){
- return -ENOMEM;
- }
-
- memset(chan, 0, sizeof(x25_channel_t));
-
- /* Bug Fix: Seg Err on PVC startup
- * It must be here since bind_lcn_to_dev expects
- * it bellow */
- dev->priv = chan;
-
- strcpy(chan->name, conf->name);
- chan->card = card;
- chan->dev = dev;
- chan->common.sk = NULL;
- chan->common.func = NULL;
- chan->common.rw_bind = 0;
- chan->tx_skb = chan->rx_skb = NULL;
-
- /* verify media address */
- if (conf->addr[0] == '@'){ /* SVC */
- chan->common.svc = 1;
- strncpy(chan->addr, &conf->addr[1], WAN_ADDRESS_SZ);
-
- /* Set channel timeouts (default if not specified) */
- chan->idle_timeout = (conf->idle_timeout) ?
- conf->idle_timeout : 90;
- chan->hold_timeout = (conf->hold_timeout) ?
- conf->hold_timeout : 10;
-
- }else if (isdigit(conf->addr[0])){ /* PVC */
- int lcn = dec_to_uint(conf->addr, 0);
-
- if ((lcn >= card->u.x.lo_pvc) && (lcn <= card->u.x.hi_pvc)){
- bind_lcn_to_dev (card, dev, lcn);
- }else{
- printk(KERN_ERR
- "%s: PVC %u is out of range on interface %s!\n",
- wandev->name, lcn, chan->name);
- err = -EINVAL;
- }
- }else{
- printk(KERN_ERR
- "%s: invalid media address on interface %s!\n",
- wandev->name, chan->name);
- err = -EINVAL;
- }
-
- if(strcmp(conf->usedby, "WANPIPE") == 0){
- printk(KERN_INFO "%s: Running in WANPIPE mode %s\n",
- wandev->name, chan->name);
- chan->common.usedby = WANPIPE;
- chan->protocol = htons(ETH_P_IP);
-
- }else if(strcmp(conf->usedby, "API") == 0){
- chan->common.usedby = API;
- printk(KERN_INFO "%s: Running in API mode %s\n",
- wandev->name, chan->name);
- chan->protocol = htons(X25_PROT);
- }
-
-
- if (err){
- kfree(chan);
- dev->priv = NULL;
- return err;
- }
-
- chan->enable_IPX = conf->enable_IPX;
-
- if (chan->enable_IPX)
- chan->protocol = htons(ETH_P_IPX);
-
- if (conf->network_number)
- chan->network_number = conf->network_number;
- else
- chan->network_number = 0xDEADBEEF;
-
- /* prepare network device data space for registration */
- strcpy(dev->name,chan->name);
-
- dev->init = &if_init;
-
- init_x25_channel_struct(chan);
-
- return 0;
-}
-
-/*===================================================================
- * Name: del_if(), Remove a logical channel.
- *
- * Purpose: To dynamically remove a logical channel.
- *
- * Rationale: Each logical channel should be dynamically
- * removable. This functin is called by an
- * IOCTL_IFDEL ioctl call or shutdown().
- *
- * Description: Do nothing.
- *
- * Called by: IOCTL_IFDEL : wanrouter_ioctl() from wanmain.c
- * shutdown() from sdlamain.c
- *
- * Assumptions:
- *
- * Warnings:
- *
- * Return: 0 Ok. Void function.
- */
-
-//FIXME Del IF Should be taken out now.
-
-static int del_if(struct wan_device* wandev, struct net_device* dev)
-{
- return 0;
-}
-
-
-/*============================================================
- * Name: wpx_exec
- *
- * Description: Execute adapter interface command.
- * This option is currently dissabled.
- *===========================================================*/
-
-static int wpx_exec (struct sdla* card, void* u_cmd, void* u_data)
-{
- return 0;
-}
-
-/*============================================================
- * Name: disable_comm
- *
- * Description: Disable communications during shutdown.
- * Dont check return code because there is
- * nothing we can do about it.
- *
- * Warning: Dev and private areas are gone at this point.
- *===========================================================*/
-
-static void disable_comm(sdla_t* card)
-{
- disable_comm_shutdown(card);
- del_timer(&card->u.x.x25_timer);
- return;
-}
-
-
-/*============================================================
- * Network Device Interface
- *===========================================================*/
-
-/*===================================================================
- * Name: if_init(), Netowrk Interface Initialization
- *
- * Purpose: To initialize a network interface device structure.
- *
- * Rationale: During network interface startup, the if_init
- * is called by the kernel to initialize the
- * netowrk device structure. Thus a driver
- * can customze a network device.
- *
- * Description: Initialize the netowrk device call back
- * routines. This is where we tell the kernel
- * which function to use when it wants to send
- * via our interface.
- * Furthermore, we initialize the device flags,
- * MTU and physical address of the board.
- *
- * Called by: Kernel (/usr/src/linux/net/core/dev.c)
- * (dev->init())
- *
- * Assumptions: None
- *
- * Warnings: None
- *
- * Return: 0 Ok : Void function.
- */
-static int if_init(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- struct wan_device* wandev = &card->wandev;
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_header = &if_header;
- dev->rebuild_header = &if_rebuild_hdr;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- /* Initialize media-specific parameters */
- dev->type = ARPHRD_PPP; /* ARP h/w type */
- dev->flags |= IFF_POINTOPOINT;
- dev->flags |= IFF_NOARP;
-
- if (chan->common.usedby == API){
- dev->mtu = X25_CHAN_MTU+sizeof(x25api_hdr_t);
- }else{
- dev->mtu = card->wandev.mtu;
- }
-
- dev->hard_header_len = X25_HRDHDR_SZ; /* media header length */
- dev->addr_len = 2; /* hardware address length */
-
- if (!chan->common.svc){
- *(unsigned short*)dev->dev_addr = htons(chan->common.lcn);
- }
-
- /* Initialize hardware parameters (just for reference) */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = (unsigned long)wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length */
- dev->tx_queue_len = 100;
- SET_MODULE_OWNER(dev);
-
- /* FIXME Why are we doing this */
- set_chan_state(dev, WAN_DISCONNECTED);
- return 0;
-}
-
-
-/*===================================================================
- * Name: if_open(), Open/Bring up the Netowrk Interface
- *
- * Purpose: To bring up a network interface.
- *
- * Rationale:
- *
- * Description: Open network interface.
- * o prevent module from unloading by incrementing use count
- * o if link is disconnected then initiate connection
- *
- * Called by: Kernel (/usr/src/linux/net/core/dev.c)
- * (dev->open())
- *
- * Assumptions: None
- *
- * Warnings: None
- *
- * Return: 0 Ok
- * <0 Failure: Interface will not come up.
- */
-
-static int if_open(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- struct timeval tv;
- unsigned long smp_flags;
-
- if (netif_running(dev))
- return -EBUSY;
-
- chan->tq_working = 0;
-
- /* Initialize the workqueue */
- INIT_WORK(&chan->common.wanpipe_work, (void *)x25api_bh, dev);
-
- /* Allocate and initialize BH circular buffer */
- /* Add 1 to MAX_BH_BUFF so we don't have test with (MAX_BH_BUFF-1) */
- chan->bh_head = kmalloc((sizeof(bh_data_t)*(MAX_BH_BUFF+1)),GFP_ATOMIC);
-
- if (chan->bh_head == NULL){
- printk(KERN_INFO "%s: ERROR, failed to allocate memory ! BH_BUFFERS !\n",
- card->devname);
-
- return -ENOBUFS;
- }
- memset(chan->bh_head,0,(sizeof(bh_data_t)*(MAX_BH_BUFF+1)));
- atomic_set(&chan->bh_buff_used, 0);
-
- /* Increment the number of interfaces */
- ++card->u.x.no_dev;
-
- wanpipe_open(card);
-
- /* LAPB protocol only uses one interface, thus
- * start the protocol after it comes up. */
- if (card->u.x.LAPB_hdlc){
- if (card->open_cnt == 1){
- TX25Status* status = card->flags;
- S508_S514_lock(card, &smp_flags);
- x25_set_intr_mode(card, INTR_ON_TIMER);
- status->imask &= ~INTR_ON_TIMER;
- S508_S514_unlock(card, &smp_flags);
- }
- }else{
- /* X25 can have multiple interfaces thus, start the
- * protocol once all interfaces are up */
-
- //FIXME: There is a bug here. If interface is
- //brought down and up, it will try to enable comm.
- if (card->open_cnt == card->u.x.num_of_ch){
-
- S508_S514_lock(card, &smp_flags);
- connect(card);
- S508_S514_unlock(card, &smp_flags);
-
- mod_timer(&card->u.x.x25_timer, jiffies + HZ);
- }
- }
- /* Device is not up until the we are in connected state */
- do_gettimeofday( &tv );
- chan->router_start_time = tv.tv_sec;
-
- netif_start_queue(dev);
-
- return 0;
-}
-
-/*===================================================================
- * Name: if_close(), Close/Bring down the Netowrk Interface
- *
- * Purpose: To bring down a network interface.
- *
- * Rationale:
- *
- * Description: Close network interface.
- * o decrement use module use count
- *
- * Called by: Kernel (/usr/src/linux/net/core/dev.c)
- * (dev->close())
- * ifconfig <name> down: will trigger the kernel
- * which will call this function.
- *
- * Assumptions: None
- *
- * Warnings: None
- *
- * Return: 0 Ok
- * <0 Failure: Interface will not exit properly.
- */
-static int if_close(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- unsigned long smp_flags;
-
- netif_stop_queue(dev);
-
- if ((chan->common.state == WAN_CONNECTED) ||
- (chan->common.state == WAN_CONNECTING)){
- S508_S514_lock(card, &smp_flags);
- chan_disc(dev);
- S508_S514_unlock(card, &smp_flags);
- }
-
- wanpipe_close(card);
-
- S508_S514_lock(card, &smp_flags);
- if (chan->bh_head){
- int i;
- struct sk_buff *skb;
-
- for (i=0; i<(MAX_BH_BUFF+1); i++){
- skb = ((bh_data_t *)&chan->bh_head[i])->skb;
- if (skb != NULL){
- dev_kfree_skb_any(skb);
- }
- }
- kfree(chan->bh_head);
- chan->bh_head=NULL;
- }
- S508_S514_unlock(card, &smp_flags);
-
- /* If this is the last close, disconnect physical link */
- if (!card->open_cnt){
- S508_S514_lock(card, &smp_flags);
- disconnect(card);
- x25_set_intr_mode(card, 0);
- S508_S514_unlock(card, &smp_flags);
- }
-
- /* Decrement the number of interfaces */
- --card->u.x.no_dev;
- return 0;
-}
-
-/*======================================================================
- * Build media header.
- * o encapsulate packet according to encapsulation type.
- *
- * The trick here is to put packet type (Ethertype) into 'protocol'
- * field of the socket buffer, so that we don't forget it.
- * If encapsulation fails, set skb->protocol to 0 and discard
- * packet later.
- *
- * Return: media header length.
- *======================================================================*/
-
-static int if_header(struct sk_buff* skb, struct net_device* dev,
- unsigned short type, void* daddr, void* saddr,
- unsigned len)
-{
- x25_channel_t* chan = dev->priv;
- int hdr_len = dev->hard_header_len;
-
- skb->protocol = htons(type);
- if (!chan->protocol){
- hdr_len = wanrouter_encapsulate(skb, dev, type);
- if (hdr_len < 0){
- hdr_len = 0;
- skb->protocol = htons(0);
- }
- }
- return hdr_len;
-}
-
-/*===============================================================
- * Re-build media header.
- *
- * Return: 1 physical address resolved.
- * 0 physical address not resolved
- *==============================================================*/
-
-static int if_rebuild_hdr (struct sk_buff* skb)
-{
- struct net_device *dev = skb->dev;
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- printk(KERN_INFO "%s: rebuild_header() called for interface %s!\n",
- card->devname, dev->name);
- return 1;
-}
-
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++chan->if_send_stat.if_send_tbusy_timeout;
- printk (KERN_INFO "%s: Transmit timed out on %s\n",
- card->devname, dev->name);
- netif_wake_queue (dev);
-}
-
-
-/*=========================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission).
- * o check link state. If link is not up, then drop the packet.
- * o check channel status. If it's down then initiate a call.
- * o pass a packet to corresponding WAN device.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- *
- *========================================================================*/
-
-static int if_send(struct sk_buff* skb, struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- TX25Status* status = card->flags;
- int udp_type;
- unsigned long smp_flags=0;
-
- ++chan->if_send_stat.if_send_entry;
-
- netif_stop_queue(dev);
-
- /* No need to check frame length, since socket code
- * will perform the check for us */
-
- chan->tick_counter = jiffies;
-
- /* Critical region starts here */
- S508_S514_lock(card, &smp_flags);
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)){
- printk(KERN_INFO "Hit critical in if_send()! %lx\n",card->wandev.critical);
- goto if_send_crit_exit;
- }
-
- udp_type = udp_pkt_type(skb, card);
-
- if(udp_type != UDP_INVALID_TYPE) {
-
- if(store_udp_mgmt_pkt(udp_type, UDP_PKT_FRM_STACK, card, dev, skb,
- chan->common.lcn)) {
-
- status->imask |= INTR_ON_TIMER;
- if (udp_type == UDP_XPIPE_TYPE){
- chan->if_send_stat.if_send_PIPE_request++;
- }
- }
- netif_start_queue(dev);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
- S508_S514_unlock(card, &smp_flags);
- return 0;
- }
-
- if (chan->transmit_length){
- //FIXME: This check doesn't make sense any more
- if (chan->common.state != WAN_CONNECTED){
- chan->transmit_length=0;
- atomic_set(&chan->common.driver_busy,0);
- }else{
- netif_stop_queue(dev);
- ++card->u.x.tx_interrupts_pending;
- status->imask |= INTR_ON_TX_FRAME;
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
- S508_S514_unlock(card, &smp_flags);
- return 1;
- }
- }
-
- if (card->wandev.state != WAN_CONNECTED){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- ++chan->if_send_stat.if_send_wan_disconnected;
-
- }else if ( chan->protocol && (chan->protocol != skb->protocol)){
- printk(KERN_INFO
- "%s: unsupported Ethertype 0x%04X on interface %s!\n",
- chan->name, htons(skb->protocol), dev->name);
-
- printk(KERN_INFO "PROTO %Xn", htons(chan->protocol));
- ++chan->ifstats.tx_errors;
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- ++chan->if_send_stat.if_send_protocol_error;
-
- }else switch (chan->common.state){
-
- case WAN_DISCONNECTED:
- /* Try to establish connection. If succeded, then start
- * transmission, else drop a packet.
- */
- if (chan->common.usedby == API){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- break;
- }else{
- if (chan_connect(dev) != 0){
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- break;
- }
- }
- /* fall through */
-
- case WAN_CONNECTED:
- if( skb->protocol == htons(ETH_P_IPX)) {
- if(chan->enable_IPX) {
- switch_net_numbers( skb->data,
- chan->network_number, 0);
- } else {
- ++card->wandev.stats.tx_dropped;
- ++chan->ifstats.tx_dropped;
- ++chan->if_send_stat.if_send_protocol_error;
- goto if_send_crit_exit;
- }
- }
- /* We never drop here, if cannot send than, copy
- * a packet into a transmit buffer
- */
- chan_send(dev, skb->data, skb->len, 0);
- break;
-
- default:
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- break;
- }
-
-
-if_send_crit_exit:
-
- dev_kfree_skb_any(skb);
-
- netif_start_queue(dev);
- clear_bit(SEND_CRIT,(void*)&card->wandev.critical);
- S508_S514_unlock(card, &smp_flags);
- return 0;
-}
-
-/*============================================================================
- * Setup so that a frame can be transmitted on the occurrence of a transmit
- * interrupt.
- *===========================================================================*/
-
-static void setup_for_delayed_transmit(struct net_device* dev, void* buf,
- unsigned len)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- TX25Status* status = card->flags;
-
- ++chan->if_send_stat.if_send_adptr_bfrs_full;
-
- if(chan->transmit_length) {
- printk(KERN_INFO "%s: Error, transmit length set in delayed transmit!\n",
- card->devname);
- return;
- }
-
- if (chan->common.usedby == API){
- if (len > X25_CHAN_MTU+sizeof(x25api_hdr_t)) {
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- printk(KERN_INFO "%s: Length is too big for delayed transmit\n",
- card->devname);
- return;
- }
- }else{
- if (len > X25_MAX_DATA) {
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- printk(KERN_INFO "%s: Length is too big for delayed transmit\n",
- card->devname);
- return;
- }
- }
-
- chan->transmit_length = len;
- atomic_set(&chan->common.driver_busy,1);
- memcpy(chan->transmit_buffer, buf, len);
-
- ++chan->if_send_stat.if_send_tx_int_enabled;
-
- /* Enable Transmit Interrupt */
- ++card->u.x.tx_interrupts_pending;
- status->imask |= INTR_ON_TX_FRAME;
-}
-
-
-/*===============================================================
- * net_device_stats
- *
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- *
- *==============================================================*/
-static struct net_device_stats *if_stats(struct net_device* dev)
-{
- x25_channel_t *chan = dev->priv;
-
- if(chan == NULL)
- return NULL;
-
- return &chan->ifstats;
-}
-
-
-/*
- * Interrupt Handlers
- */
-
-/*
- * X.25 Interrupt Service Routine.
- */
-
-static void wpx_isr (sdla_t* card)
-{
- TX25Status* status = card->flags;
-
- card->in_isr = 1;
- ++card->statistics.isr_entry;
-
- if (test_bit(PERI_CRIT,(void*)&card->wandev.critical)){
- card->in_isr=0;
- status->iflags = 0;
- return;
- }
-
- if (test_bit(SEND_CRIT, (void*)&card->wandev.critical)){
-
- printk(KERN_INFO "%s: wpx_isr: wandev.critical set to 0x%02lx, int type = 0x%02x\n",
- card->devname, card->wandev.critical, status->iflags);
- card->in_isr = 0;
- status->iflags = 0;
- return;
- }
-
- /* For all interrupts set the critical flag to CRITICAL_RX_INTR.
- * If the if_send routine is called with this flag set it will set
- * the enable transmit flag to 1. (for a delayed interrupt)
- */
- switch (status->iflags){
-
- case RX_INTR_PENDING: /* receive interrupt */
- rx_intr(card);
- break;
-
- case TX_INTR_PENDING: /* transmit interrupt */
- tx_intr(card);
- break;
-
- case MODEM_INTR_PENDING: /* modem status interrupt */
- status_intr(card);
- break;
-
- case X25_ASY_TRANS_INTR_PENDING: /* network event interrupt */
- event_intr(card);
- break;
-
- case TIMER_INTR_PENDING:
- timer_intr(card);
- break;
-
- default: /* unwanted interrupt */
- spur_intr(card);
- }
-
- card->in_isr = 0;
- status->iflags = 0; /* clear interrupt condition */
-}
-
-/*
- * Receive interrupt handler.
- * This routine handles fragmented IP packets using M-bit according to the
- * RFC1356.
- * o map ligical channel number to network interface.
- * o allocate socket buffer or append received packet to the existing one.
- * o if M-bit is reset (i.e. it's the last packet in a sequence) then
- * decapsulate packet and pass socket buffer to the protocol stack.
- *
- * Notes:
- * 1. When allocating a socket buffer, if M-bit is set then more data is
- * coming and we have to allocate buffer for the maximum IP packet size
- * expected on this channel.
- * 2. If something goes wrong and X.25 packet has to be dropped (e.g. no
- * socket buffers available) the whole packet sequence must be discarded.
- */
-
-static void rx_intr (sdla_t* card)
-{
- TX25Mbox* rxmb = card->rxmb;
- unsigned lcn = rxmb->cmd.lcn;
- struct net_device* dev = find_channel(card,lcn);
- x25_channel_t* chan;
- struct sk_buff* skb=NULL;
-
- if (dev == NULL){
- /* Invalid channel, discard packet */
- printk(KERN_INFO "%s: receiving on orphaned LCN %d!\n",
- card->devname, lcn);
- return;
- }
-
- chan = dev->priv;
- chan->i_timeout_sofar = jiffies;
-
-
- /* Copy the data from the board, into an
- * skb buffer
- */
- if (wanpipe_pull_data_in_skb(card,dev,&skb)){
- ++chan->ifstats.rx_dropped;
- ++card->wandev.stats.rx_dropped;
- ++chan->rx_intr_stat.rx_intr_no_socket;
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
- return;
- }
-
- dev->last_rx = jiffies; /* timestamp */
-
-
- /* ------------ API ----------------*/
-
- if (chan->common.usedby == API){
-
- if (bh_enqueue(dev, skb)){
- ++chan->ifstats.rx_dropped;
- ++card->wandev.stats.rx_dropped;
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
- dev_kfree_skb_any(skb);
- return;
- }
-
- ++chan->ifstats.rx_packets;
- chan->ifstats.rx_bytes += skb->len;
-
-
- chan->rx_skb = NULL;
- if (!test_and_set_bit(0, &chan->tq_working)){
- wanpipe_queue_work(&chan->common.wanpipe_work);
- }
- return;
- }
-
-
- /* ------------- WANPIPE -------------------*/
-
- /* set rx_skb to NULL so we won't access it later when kernel already owns it */
- chan->rx_skb=NULL;
-
- /* Decapsulate packet, if necessary */
- if (!skb->protocol && !wanrouter_type_trans(skb, dev)){
- /* can't decapsulate packet */
- dev_kfree_skb_any(skb);
- ++chan->ifstats.rx_errors;
- ++chan->ifstats.rx_dropped;
- ++card->wandev.stats.rx_dropped;
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
-
- }else{
- if( handle_IPXWAN(skb->data, chan->name,
- chan->enable_IPX, chan->network_number,
- skb->protocol)){
-
- if( chan->enable_IPX ){
- if(chan_send(dev, skb->data, skb->len,0)){
- chan->tx_skb = skb;
- }else{
- dev_kfree_skb_any(skb);
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
- }
- }else{
- /* increment IPX packet dropped statistic */
- ++chan->ifstats.rx_dropped;
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
- }
- }else{
- skb->mac.raw = skb->data;
- chan->ifstats.rx_bytes += skb->len;
- ++chan->ifstats.rx_packets;
- ++chan->rx_intr_stat.rx_intr_bfr_passed_to_stack;
- netif_rx(skb);
- }
- }
-
- return;
-}
-
-
-static int wanpipe_pull_data_in_skb(sdla_t *card, struct net_device *dev,
- struct sk_buff **skb)
-{
- void *bufptr;
- TX25Mbox* rxmb = card->rxmb;
- unsigned len = rxmb->cmd.length; /* packet length */
- unsigned qdm = rxmb->cmd.qdm; /* Q,D and M bits */
- x25_channel_t *chan = dev->priv;
- struct sk_buff *new_skb = *skb;
-
- if (chan->common.usedby == WANPIPE){
- if (chan->drop_sequence){
- if (!(qdm & 0x01)){
- chan->drop_sequence = 0;
- }
- return 1;
- }
- new_skb = chan->rx_skb;
- }else{
- /* Add on the API header to the received
- * data
- */
- len += sizeof(x25api_hdr_t);
- }
-
- if (new_skb == NULL){
- int bufsize;
-
- if (chan->common.usedby == WANPIPE){
- bufsize = (qdm & 0x01) ? dev->mtu : len;
- }else{
- bufsize = len;
- }
-
- /* Allocate new socket buffer */
- new_skb = dev_alloc_skb(bufsize + dev->hard_header_len);
- if (new_skb == NULL){
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- chan->drop_sequence = 1; /* set flag */
- ++chan->ifstats.rx_dropped;
- return 1;
- }
- }
-
- if (skb_tailroom(new_skb) < len){
- /* No room for the packet. Call off the whole thing! */
- dev_kfree_skb_any(new_skb);
- if (chan->common.usedby == WANPIPE){
- chan->rx_skb = NULL;
- if (qdm & 0x01){
- chan->drop_sequence = 1;
- }
- }
-
- printk(KERN_INFO "%s: unexpectedly long packet sequence "
- "on interface %s!\n", card->devname, dev->name);
- ++chan->ifstats.rx_length_errors;
- return 1;
- }
-
- bufptr = skb_put(new_skb,len);
-
-
- if (chan->common.usedby == API){
- /* Fill in the x25api header
- */
- x25api_t * api_data = (x25api_t*)bufptr;
- api_data->hdr.qdm = rxmb->cmd.qdm;
- api_data->hdr.cause = rxmb->cmd.cause;
- api_data->hdr.diagn = rxmb->cmd.diagn;
- api_data->hdr.length = rxmb->cmd.length;
- memcpy(api_data->data, rxmb->data, rxmb->cmd.length);
- }else{
- memcpy(bufptr, rxmb->data, len);
- }
-
- new_skb->dev = dev;
-
- if (chan->common.usedby == API){
- new_skb->mac.raw = new_skb->data;
- new_skb->protocol = htons(X25_PROT);
- new_skb->pkt_type = WAN_PACKET_DATA;
- }else{
- new_skb->protocol = chan->protocol;
- chan->rx_skb = new_skb;
- }
-
- /* If qdm bit is set, more data is coming
- * thus, exit and wait for more data before
- * sending the packet up. (Used by router only)
- */
- if ((qdm & 0x01) && (chan->common.usedby == WANPIPE))
- return 1;
-
- *skb = new_skb;
-
- return 0;
-}
-
-/*===============================================================
- * tx_intr
- *
- * Transmit interrupt handler.
- * For each dev, check that there is something to send.
- * If data available, transmit.
- *
- *===============================================================*/
-
-static void tx_intr (sdla_t* card)
-{
- struct net_device *dev;
- TX25Status* status = card->flags;
- unsigned char more_to_tx=0;
- x25_channel_t *chan=NULL;
- int i=0;
-
- if (card->u.x.tx_dev == NULL){
- card->u.x.tx_dev = card->wandev.dev;
- }
-
- dev = card->u.x.tx_dev;
-
- for (;;){
-
- chan = dev->priv;
- if (chan->transmit_length){
- /* Device was set to transmit, check if the TX
- * buffers are available
- */
- if (chan->common.state != WAN_CONNECTED){
- chan->transmit_length = 0;
- atomic_set(&chan->common.driver_busy,0);
- chan->tx_offset=0;
- if (netif_queue_stopped(dev)){
- if (chan->common.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- dev = move_dev_to_next(card,dev);
- break;
- }
-
- if ((status->cflags[chan->ch_idx] & 0x40 || card->u.x.LAPB_hdlc) &&
- (*card->u.x.hdlc_buf_status & 0x40) ){
- /* Tx buffer available, we can send */
-
- if (tx_intr_send(card, dev)){
- more_to_tx=1;
- }
-
- /* If more than one interface present, move the
- * device pointer to the next interface, so on the
- * next TX interrupt we will try sending from it.
- */
- dev = move_dev_to_next(card,dev);
- break;
- }else{
- /* Tx buffers not available, but device set
- * the TX interrupt. Set more_to_tx and try
- * to transmit for other devices.
- */
- more_to_tx=1;
- dev = move_dev_to_next(card,dev);
- }
-
- }else{
- /* This device was not set to transmit,
- * go to next
- */
- dev = move_dev_to_next(card,dev);
- }
-
- if (++i == card->u.x.no_dev){
- if (!more_to_tx){
- DBG_PRINTK(KERN_INFO "%s: Nothing to Send in TX INTR\n",
- card->devname);
- }
- break;
- }
-
- } //End of FOR
-
- card->u.x.tx_dev = dev;
-
- if (!more_to_tx){
- /* if any other interfaces have transmit interrupts pending, */
- /* do not disable the global transmit interrupt */
- if (!(--card->u.x.tx_interrupts_pending)){
- status->imask &= ~INTR_ON_TX_FRAME;
- }
- }
- return;
-}
-
-/*===============================================================
- * move_dev_to_next
- *
- *
- *===============================================================*/
-
-
-struct net_device *move_dev_to_next(sdla_t *card, struct net_device *dev)
-{
- if (card->u.x.no_dev != 1){
- if (!*((struct net_device **)dev->priv))
- return card->wandev.dev;
- else
- return *((struct net_device **)dev->priv);
- }
- return dev;
-}
-
-/*===============================================================
- * tx_intr_send
- *
- *
- *===============================================================*/
-
-static int tx_intr_send(sdla_t *card, struct net_device *dev)
-{
- x25_channel_t* chan = dev->priv;
-
- if (chan_send (dev,chan->transmit_buffer,chan->transmit_length,1)){
-
- /* Packet was split up due to its size, do not disable
- * tx_intr
- */
- return 1;
- }
-
- chan->transmit_length=0;
- atomic_set(&chan->common.driver_busy,0);
- chan->tx_offset=0;
-
- /* If we are in API mode, wakeup the
- * sock BH handler, not the NET_BH */
- if (netif_queue_stopped(dev)){
- if (chan->common.usedby == API){
- netif_start_queue(dev);
- wakeup_sk_bh(dev);
- }else{
- netif_wake_queue(dev);
- }
- }
- return 0;
-}
-
-
-/*===============================================================
- * timer_intr
- *
- * Timer interrupt handler.
- * Check who called the timer interrupt and perform
- * action accordingly.
- *
- *===============================================================*/
-
-static void timer_intr (sdla_t *card)
-{
- TX25Status* status = card->flags;
-
- if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_CMD_EXEC){
-
- if (timer_intr_cmd_exec(card) == 0){
- card->u.x.timer_int_enabled &=
- ~TMR_INT_ENABLED_CMD_EXEC;
- }
-
- }else if(card->u.x.timer_int_enabled & TMR_INT_ENABLED_UDP_PKT) {
-
- if ((*card->u.x.hdlc_buf_status & 0x40) &&
- card->u.x.udp_type == UDP_XPIPE_TYPE){
-
- if(process_udp_mgmt_pkt(card)) {
- card->u.x.timer_int_enabled &=
- ~TMR_INT_ENABLED_UDP_PKT;
- }
- }
-
- }else if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_POLL_ACTIVE) {
-
- struct net_device *dev = card->u.x.poll_device;
- x25_channel_t *chan = NULL;
-
- if (!dev){
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_POLL_ACTIVE;
- return;
- }
- chan = dev->priv;
-
- printk(KERN_INFO
- "%s: Closing down Idle link %s on LCN %d\n",
- card->devname,chan->name,chan->common.lcn);
- chan->i_timeout_sofar = jiffies;
- chan_disc(dev);
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_POLL_ACTIVE;
- card->u.x.poll_device=NULL;
-
- }else if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_POLL_CONNECT_ON) {
-
- wanpipe_set_state(card, WAN_CONNECTED);
- if (card->u.x.LAPB_hdlc){
- struct net_device *dev = card->wandev.dev;
- set_chan_state(dev,WAN_CONNECTED);
- send_delayed_cmd_result(card,dev,card->mbox);
- }
-
- /* 0x8F enable all interrupts */
- x25_set_intr_mode(card, INTR_ON_RX_FRAME|
- INTR_ON_TX_FRAME|
- INTR_ON_MODEM_STATUS_CHANGE|
- //INTR_ON_COMMAND_COMPLETE|
- X25_ASY_TRANS_INTR_PENDING |
- INTR_ON_TIMER |
- DIRECT_RX_INTR_USAGE
- );
-
- status->imask &= ~INTR_ON_TX_FRAME; /* mask Tx interrupts */
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_POLL_CONNECT_ON;
-
- }else if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_POLL_CONNECT_OFF) {
-
- //printk(KERN_INFO "Poll connect, Turning OFF\n");
- disconnect(card);
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_POLL_CONNECT_OFF;
-
- }else if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_POLL_DISCONNECT) {
-
- //printk(KERN_INFO "POll disconnect, trying to connect\n");
- connect(card);
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_POLL_DISCONNECT;
-
- }else if (card->u.x.timer_int_enabled & TMR_INT_ENABLED_UPDATE){
-
- if (*card->u.x.hdlc_buf_status & 0x40){
- x25_get_err_stats(card);
- x25_get_stats(card);
- card->u.x.timer_int_enabled &= ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- if(!card->u.x.timer_int_enabled){
- //printk(KERN_INFO "Turning Timer Off \n");
- status->imask &= ~INTR_ON_TIMER;
- }
-}
-
-/*====================================================================
- * Modem status interrupt handler.
- *===================================================================*/
-static void status_intr (sdla_t* card)
-{
-
- /* Added to avoid Modem status message flooding */
- static TX25ModemStatus last_stat;
-
- TX25Mbox* mbox = card->mbox;
- TX25ModemStatus *modem_status;
- struct net_device *dev;
- x25_channel_t *chan;
- int err;
-
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_READ_MODEM_STATUS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err){
- x25_error(card, err, X25_READ_MODEM_STATUS, 0);
- }else{
-
- modem_status = (TX25ModemStatus*)mbox->data;
-
- /* Check if the last status was the same
- * if it was, do NOT print message again */
-
- if (last_stat.status != modem_status->status){
-
- printk(KERN_INFO "%s: Modem Status Change: DCD=%s, CTS=%s\n",
- card->devname,DCD(modem_status->status),CTS(modem_status->status));
-
- last_stat.status = modem_status->status;
-
- if (card->u.x.oob_on_modem){
-
- mbox->cmd.pktType = mbox->cmd.command;
- mbox->cmd.result = 0x08;
-
- /* Send a OOB to all connected sockets */
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device**)dev->priv)) {
- chan=dev->priv;
- if (chan->common.usedby == API){
- send_oob_msg(card,dev,mbox);
- }
- }
-
- /* The modem OOB message will probably kill the
- * the link. If we don't clear the flag here,
- * a deadlock could occur */
- if (atomic_read(&card->u.x.command_busy)){
- atomic_set(&card->u.x.command_busy,0);
- }
- }
- }
- }
-
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_HDLC_LINK_STATUS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err){
- x25_error(card, err, X25_HDLC_LINK_STATUS, 0);
- }
-
-}
-
-/*====================================================================
- * Network event interrupt handler.
- *===================================================================*/
-static void event_intr (sdla_t* card)
-{
- x25_fetch_events(card);
-}
-
-/*====================================================================
- * Spurious interrupt handler.
- * o print a warning
- * o
- *====================================================================*/
-
-static void spur_intr (sdla_t* card)
-{
- printk(KERN_INFO "%s: spurious interrupt!\n", card->devname);
-}
-
-
-/*
- * Background Polling Routines
- */
-
-/*====================================================================
- * Main polling routine.
- * This routine is repeatedly called by the WANPIPE 'thread' to allow for
- * time-dependent housekeeping work.
- *
- * Notes:
- * 1. This routine may be called on interrupt context with all interrupts
- * enabled. Beware!
- *====================================================================*/
-
-static void wpx_poll (sdla_t *card)
-{
- if (!card->wandev.dev){
- goto wpx_poll_exit;
- }
-
- if (card->open_cnt != card->u.x.num_of_ch){
- goto wpx_poll_exit;
- }
-
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- goto wpx_poll_exit;
- }
-
- if (test_bit(SEND_CRIT,&card->wandev.critical)){
- goto wpx_poll_exit;
- }
-
- switch(card->wandev.state){
- case WAN_CONNECTED:
- poll_active(card);
- break;
-
- case WAN_CONNECTING:
- poll_connecting(card);
- break;
-
- case WAN_DISCONNECTED:
- poll_disconnected(card);
- break;
- }
-
-wpx_poll_exit:
- clear_bit(POLL_CRIT,&card->wandev.critical);
- return;
-}
-
-static void trigger_x25_poll(sdla_t *card)
-{
- schedule_work(&card->u.x.x25_poll_work);
-}
-
-/*====================================================================
- * Handle physical link establishment phase.
- * o if connection timed out, disconnect the link.
- *===================================================================*/
-
-static void poll_connecting (sdla_t* card)
-{
- volatile TX25Status* status = card->flags;
-
- if (status->gflags & X25_HDLC_ABM){
-
- timer_intr_exec (card, TMR_INT_ENABLED_POLL_CONNECT_ON);
-
- }else if ((jiffies - card->state_tick) > CONNECT_TIMEOUT){
-
- timer_intr_exec (card, TMR_INT_ENABLED_POLL_CONNECT_OFF);
-
- }
-}
-
-/*====================================================================
- * Handle physical link disconnected phase.
- * o if hold-down timeout has expired and there are open interfaces,
- * connect link.
- *===================================================================*/
-
-static void poll_disconnected (sdla_t* card)
-{
- struct net_device *dev;
- x25_channel_t *chan;
- TX25Status* status = card->flags;
-
- if (!card->u.x.LAPB_hdlc && card->open_cnt &&
- ((jiffies - card->state_tick) > HOLD_DOWN_TIME)){
- timer_intr_exec(card, TMR_INT_ENABLED_POLL_DISCONNECT);
- }
-
-
- if ((dev=card->wandev.dev) == NULL)
- return;
-
- if ((chan=dev->priv) == NULL)
- return;
-
- if (chan->common.usedby == API &&
- atomic_read(&chan->common.command) &&
- card->u.x.LAPB_hdlc){
-
- if (!(card->u.x.timer_int_enabled & TMR_INT_ENABLED_CMD_EXEC))
- card->u.x.timer_int_enabled |= TMR_INT_ENABLED_CMD_EXEC;
-
- if (!(status->imask & INTR_ON_TIMER))
- status->imask |= INTR_ON_TIMER;
- }
-
-}
-
-/*====================================================================
- * Handle active link phase.
- * o fetch X.25 asynchronous events.
- * o kick off transmission on all interfaces.
- *===================================================================*/
-
-static void poll_active (sdla_t* card)
-{
- struct net_device* dev;
- TX25Status* status = card->flags;
-
- for (dev = card->wandev.dev; dev;
- dev = *((struct net_device **)dev->priv)){
- x25_channel_t* chan = dev->priv;
-
- /* If SVC has been idle long enough, close virtual circuit */
- if ( chan->common.svc &&
- chan->common.state == WAN_CONNECTED &&
- chan->common.usedby == WANPIPE ){
-
- if( (jiffies - chan->i_timeout_sofar) / HZ > chan->idle_timeout ){
- /* Close svc */
- card->u.x.poll_device=dev;
- timer_intr_exec (card, TMR_INT_ENABLED_POLL_ACTIVE);
- }
- }
-
-#ifdef PRINT_DEBUG
- chan->ifstats.tx_compressed = atomic_read(&chan->common.command);
- chan->ifstats.tx_errors = chan->common.state;
- chan->ifstats.rx_fifo_errors = atomic_read(&card->u.x.command_busy);
- ++chan->ifstats.tx_bytes;
-
- chan->ifstats.rx_fifo_errors=atomic_read(&chan->common.disconnect);
- chan->ifstats.multicast=atomic_read(&chan->bh_buff_used);
- chan->ifstats.rx_length_errors=*card->u.x.hdlc_buf_status;
-#endif
-
- if (chan->common.usedby == API &&
- atomic_read(&chan->common.command) &&
- !card->u.x.LAPB_hdlc){
-
- if (!(card->u.x.timer_int_enabled & TMR_INT_ENABLED_CMD_EXEC))
- card->u.x.timer_int_enabled |= TMR_INT_ENABLED_CMD_EXEC;
-
- if (!(status->imask & INTR_ON_TIMER))
- status->imask |= INTR_ON_TIMER;
- }
-
- if ((chan->common.usedby == API) &&
- atomic_read(&chan->common.disconnect)){
-
- if (chan->common.state == WAN_DISCONNECTED){
- atomic_set(&chan->common.disconnect,0);
- return;
- }
-
- atomic_set(&chan->common.command,X25_CLEAR_CALL);
- if (!(card->u.x.timer_int_enabled & TMR_INT_ENABLED_CMD_EXEC))
- card->u.x.timer_int_enabled |= TMR_INT_ENABLED_CMD_EXEC;
-
- if (!(status->imask & INTR_ON_TIMER))
- status->imask |= INTR_ON_TIMER;
- }
- }
-}
-
-static void timer_intr_exec(sdla_t *card, unsigned char TYPE)
-{
- TX25Status* status = card->flags;
- card->u.x.timer_int_enabled |= TYPE;
- if (!(status->imask & INTR_ON_TIMER))
- status->imask |= INTR_ON_TIMER;
-}
-
-
-/*====================================================================
- * SDLA Firmware-Specific Functions
- *
- * Almost all X.25 commands can unexpetedly fail due to so called 'X.25
- * asynchronous events' such as restart, interrupt, incoming call request,
- * call clear request, etc. They can't be ignored and have to be delt with
- * immediately. To tackle with this problem we execute each interface
- * command in a loop until good return code is received or maximum number
- * of retries is reached. Each interface command returns non-zero return
- * code, an asynchronous event/error handler x25_error() is called.
- *====================================================================*/
-
-/*====================================================================
- * Read X.25 firmware version.
- * Put code version as ASCII string in str.
- *===================================================================*/
-
-static int x25_get_version (sdla_t* card, char* str)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_READ_CODE_VERSION;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- &&
- x25_error(card, err, X25_READ_CODE_VERSION, 0));
-
- if (!err && str)
- {
- int len = mbox->cmd.length;
-
- memcpy(str, mbox->data, len);
- str[len] = '\0';
- }
- return err;
-}
-
-/*====================================================================
- * Configure adapter.
- *===================================================================*/
-
-static int x25_configure (sdla_t* card, TX25Config* conf)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do{
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- memcpy(mbox->data, (void*)conf, sizeof(TX25Config));
- mbox->cmd.length = sizeof(TX25Config);
- mbox->cmd.command = X25_SET_CONFIGURATION;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_SET_CONFIGURATION, 0));
- return err;
-}
-
-/*====================================================================
- * Configure adapter for HDLC only.
- *===================================================================*/
-
-static int hdlc_configure (sdla_t* card, TX25Config* conf)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do{
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- memcpy(mbox->data, (void*)conf, sizeof(TX25Config));
- mbox->cmd.length = sizeof(TX25Config);
- mbox->cmd.command = X25_HDLC_SET_CONFIG;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_SET_CONFIGURATION, 0));
-
- return err;
-}
-
-static int set_hdlc_level (sdla_t* card)
-{
-
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do{
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = SET_PROTOCOL_LEVEL;
- mbox->cmd.length = 1;
- mbox->data[0] = HDLC_LEVEL; //| DO_HDLC_LEVEL_ERROR_CHECKING;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, SET_PROTOCOL_LEVEL, 0));
-
- return err;
-}
-
-
-
-/*====================================================================
- * Get communications error statistics.
- *====================================================================*/
-
-static int x25_get_err_stats (sdla_t* card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_HDLC_READ_COMM_ERR;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_HDLC_READ_COMM_ERR, 0));
-
- if (!err)
- {
- THdlcCommErr* stats = (void*)mbox->data;
-
- card->wandev.stats.rx_over_errors = stats->rxOverrun;
- card->wandev.stats.rx_crc_errors = stats->rxBadCrc;
- card->wandev.stats.rx_missed_errors = stats->rxAborted;
- card->wandev.stats.tx_aborted_errors = stats->txAborted;
- }
- return err;
-}
-
-/*====================================================================
- * Get protocol statistics.
- *===================================================================*/
-
-static int x25_get_stats (sdla_t* card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_READ_STATISTICS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_READ_STATISTICS, 0)) ;
-
- if (!err)
- {
- TX25Stats* stats = (void*)mbox->data;
-
- card->wandev.stats.rx_packets = stats->rxData;
- card->wandev.stats.tx_packets = stats->txData;
- }
- return err;
-}
-
-/*====================================================================
- * Close HDLC link.
- *===================================================================*/
-
-static int x25_close_hdlc (sdla_t* card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_HDLC_LINK_CLOSE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_HDLC_LINK_CLOSE, 0));
-
- return err;
-}
-
-
-/*====================================================================
- * Open HDLC link.
- *===================================================================*/
-
-static int x25_open_hdlc (sdla_t* card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_HDLC_LINK_OPEN;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_HDLC_LINK_OPEN, 0));
-
- return err;
-}
-
-/*=====================================================================
- * Setup HDLC link.
- *====================================================================*/
-static int x25_setup_hdlc (sdla_t* card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_HDLC_LINK_SETUP;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_HDLC_LINK_SETUP, 0));
-
- return err;
-}
-
-/*====================================================================
- * Set (raise/drop) DTR.
- *===================================================================*/
-
-static int x25_set_dtr (sdla_t* card, int dtr)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->data[0] = 0;
- mbox->data[2] = 0;
- mbox->data[1] = dtr ? 0x02 : 0x01;
- mbox->cmd.length = 3;
- mbox->cmd.command = X25_SET_GLOBAL_VARS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_SET_GLOBAL_VARS, 0));
-
- return err;
-}
-
-/*====================================================================
- * Set interrupt mode.
- *===================================================================*/
-
-static int x25_set_intr_mode (sdla_t* card, int mode)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->data[0] = mode;
- if (card->hw.fwid == SFID_X25_508){
- mbox->data[1] = card->hw.irq;
- mbox->data[2] = 2;
- mbox->cmd.length = 3;
- }else {
- mbox->cmd.length = 1;
- }
- mbox->cmd.command = X25_SET_INTERRUPT_MODE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_SET_INTERRUPT_MODE, 0));
-
- return err;
-}
-
-/*====================================================================
- * Read X.25 channel configuration.
- *===================================================================*/
-
-static int x25_get_chan_conf (sdla_t* card, x25_channel_t* chan)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int lcn = chan->common.lcn;
- int err;
-
- do{
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.lcn = lcn;
- mbox->cmd.command = X25_READ_CHANNEL_CONFIG;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_READ_CHANNEL_CONFIG, lcn));
-
- if (!err)
- {
- TX25Status* status = card->flags;
-
- /* calculate an offset into the array of status bytes */
- if (card->u.x.hi_svc <= X25_MAX_CHAN){
-
- chan->ch_idx = lcn - 1;
-
- }else{
- int offset;
-
- /* FIX: Apr 14 2000 : Nenad Corbic
- * The data field was being compared to 0x1F using
- * '&&' instead of '&'.
- * This caused X25API to fail for LCNs greater than 255.
- */
- switch (mbox->data[0] & 0x1F)
- {
- case 0x01:
- offset = status->pvc_map; break;
- case 0x03:
- offset = status->icc_map; break;
- case 0x07:
- offset = status->twc_map; break;
- case 0x0B:
- offset = status->ogc_map; break;
- default:
- offset = 0;
- }
- chan->ch_idx = lcn - 1 - offset;
- }
-
- /* get actual transmit packet size on this channel */
- switch(mbox->data[1] & 0x38)
- {
- case 0x00:
- chan->tx_pkt_size = 16;
- break;
- case 0x08:
- chan->tx_pkt_size = 32;
- break;
- case 0x10:
- chan->tx_pkt_size = 64;
- break;
- case 0x18:
- chan->tx_pkt_size = 128;
- break;
- case 0x20:
- chan->tx_pkt_size = 256;
- break;
- case 0x28:
- chan->tx_pkt_size = 512;
- break;
- case 0x30:
- chan->tx_pkt_size = 1024;
- break;
- }
- if (card->u.x.logging)
- printk(KERN_INFO "%s: X.25 packet size on LCN %d is %d.\n",
- card->devname, lcn, chan->tx_pkt_size);
- }
- return err;
-}
-
-/*====================================================================
- * Place X.25 call.
- *====================================================================*/
-
-static int x25_place_call (sdla_t* card, x25_channel_t* chan)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
- char str[64];
-
-
- if (chan->protocol == htons(ETH_P_IP)){
- sprintf(str, "-d%s -uCC", chan->addr);
-
- }else if (chan->protocol == htons(ETH_P_IPX)){
- sprintf(str, "-d%s -u800000008137", chan->addr);
-
- }
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- strcpy(mbox->data, str);
- mbox->cmd.length = strlen(str);
- mbox->cmd.command = X25_PLACE_CALL;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_PLACE_CALL, 0));
-
- if (!err){
- bind_lcn_to_dev (card, chan->dev, mbox->cmd.lcn);
- }
- return err;
-}
-
-/*====================================================================
- * Accept X.25 call.
- *====================================================================*/
-
-static int x25_accept_call (sdla_t* card, int lcn, int qdm)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.lcn = lcn;
- mbox->cmd.qdm = qdm;
- mbox->cmd.command = X25_ACCEPT_CALL;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_ACCEPT_CALL, lcn));
-
- return err;
-}
-
-/*====================================================================
- * Clear X.25 call.
- *====================================================================*/
-
-static int x25_clear_call (sdla_t* card, int lcn, int cause, int diagn)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.lcn = lcn;
- mbox->cmd.cause = cause;
- mbox->cmd.diagn = diagn;
- mbox->cmd.command = X25_CLEAR_CALL;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, X25_CLEAR_CALL, lcn));
-
- return err;
-}
-
-/*====================================================================
- * Send X.25 data packet.
- *====================================================================*/
-
-static int x25_send (sdla_t* card, int lcn, int qdm, int len, void* buf)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = MAX_CMD_RETRY;
- int err;
- unsigned char cmd;
-
- if (card->u.x.LAPB_hdlc)
- cmd = X25_HDLC_WRITE;
- else
- cmd = X25_WRITE;
-
- do
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- memcpy(mbox->data, buf, len);
- mbox->cmd.length = len;
- mbox->cmd.lcn = lcn;
-
- if (card->u.x.LAPB_hdlc){
- mbox->cmd.pf = qdm;
- }else{
- mbox->cmd.qdm = qdm;
- }
-
- mbox->cmd.command = cmd;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && retry-- && x25_error(card, err, cmd , lcn));
-
-
- /* If buffers are busy the return code for LAPB HDLC is
- * 1. The above functions are looking for return code
- * of X25RES_NOT_READY if busy. */
-
- if (card->u.x.LAPB_hdlc && err == 1){
- err = X25RES_NOT_READY;
- }
-
- return err;
-}
-
-/*====================================================================
- * Fetch X.25 asynchronous events.
- *===================================================================*/
-
-static int x25_fetch_events (sdla_t* card)
-{
- TX25Status* status = card->flags;
- TX25Mbox* mbox = card->mbox;
- int err = 0;
-
- if (status->gflags & 0x20)
- {
- memset(&mbox->cmd, 0, sizeof(TX25Cmd));
- mbox->cmd.command = X25_IS_DATA_AVAILABLE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err) x25_error(card, err, X25_IS_DATA_AVAILABLE, 0);
- }
- return err;
-}
-
-/*====================================================================
- * X.25 asynchronous event/error handler.
- * This routine is called each time interface command returns
- * non-zero return code to handle X.25 asynchronous events and
- * common errors. Return non-zero to repeat command or zero to
- * cancel it.
- *
- * Notes:
- * 1. This function may be called recursively, as handling some of the
- * asynchronous events (e.g. call request) requires execution of the
- * interface command(s) that, in turn, may also return asynchronous
- * events. To avoid re-entrancy problems we copy mailbox to dynamically
- * allocated memory before processing events.
- *====================================================================*/
-
-static int x25_error (sdla_t* card, int err, int cmd, int lcn)
-{
- int retry = 1;
- unsigned dlen = ((TX25Mbox*)card->mbox)->cmd.length;
- TX25Mbox* mb;
-
- mb = kmalloc(sizeof(TX25Mbox) + dlen, GFP_ATOMIC);
- if (mb == NULL)
- {
- printk(KERN_ERR "%s: x25_error() out of memory!\n",
- card->devname);
- return 0;
- }
- memcpy(mb, card->mbox, sizeof(TX25Mbox) + dlen);
- switch (err){
-
- case X25RES_ASYNC_PACKET: /* X.25 asynchronous packet was received */
-
- mb->data[dlen] = '\0';
-
- switch (mb->cmd.pktType & 0x7F){
-
- case ASE_CALL_RQST: /* incoming call */
- retry = incoming_call(card, cmd, lcn, mb);
- break;
-
- case ASE_CALL_ACCEPTED: /* connected */
- retry = call_accepted(card, cmd, lcn, mb);
- break;
-
- case ASE_CLEAR_RQST: /* call clear request */
- retry = call_cleared(card, cmd, lcn, mb);
- break;
-
- case ASE_RESET_RQST: /* reset request */
- printk(KERN_INFO "%s: X.25 reset request on LCN %d! "
- "Cause:0x%02X Diagn:0x%02X\n",
- card->devname, mb->cmd.lcn, mb->cmd.cause,
- mb->cmd.diagn);
- api_oob_event (card,mb);
- break;
-
- case ASE_RESTART_RQST: /* restart request */
- retry = restart_event(card, cmd, lcn, mb);
- break;
-
- case ASE_CLEAR_CONFRM:
- if (clear_confirm_event (card,mb))
- break;
-
- /* I use the goto statement here so if
- * somebody inserts code between the
- * case and default, we will not have
- * ghost problems */
-
- goto dflt_1;
-
- default:
-dflt_1:
- printk(KERN_INFO "%s: X.25 event 0x%02X on LCN %d! "
- "Cause:0x%02X Diagn:0x%02X\n",
- card->devname, mb->cmd.pktType,
- mb->cmd.lcn, mb->cmd.cause, mb->cmd.diagn);
- }
- break;
-
- case X25RES_PROTO_VIOLATION: /* X.25 protocol violation indication */
-
- /* Bug Fix: Mar 14 2000
- * The Protocol violation error conditions were
- * not handled previously */
-
- switch (mb->cmd.pktType & 0x7F){
-
- case PVE_CLEAR_RQST: /* Clear request */
- retry = call_cleared(card, cmd, lcn, mb);
- break;
-
- case PVE_RESET_RQST: /* Reset request */
- printk(KERN_INFO "%s: X.25 reset request on LCN %d! "
- "Cause:0x%02X Diagn:0x%02X\n",
- card->devname, mb->cmd.lcn, mb->cmd.cause,
- mb->cmd.diagn);
- api_oob_event (card,mb);
- break;
-
- case PVE_RESTART_RQST: /* Restart request */
- retry = restart_event(card, cmd, lcn, mb);
- break;
-
- default :
- printk(KERN_INFO
- "%s: X.25 protocol violation on LCN %d! "
- "Packet:0x%02X Cause:0x%02X Diagn:0x%02X\n",
- card->devname, mb->cmd.lcn,
- mb->cmd.pktType & 0x7F, mb->cmd.cause, mb->cmd.diagn);
- api_oob_event(card,mb);
- }
- break;
-
- case 0x42: /* X.25 timeout */
- retry = timeout_event(card, cmd, lcn, mb);
- break;
-
- case 0x43: /* X.25 retry limit exceeded */
- printk(KERN_INFO
- "%s: exceeded X.25 retry limit on LCN %d! "
- "Packet:0x%02X Diagn:0x%02X\n", card->devname,
- mb->cmd.lcn, mb->cmd.pktType, mb->cmd.diagn)
- ;
- break;
-
- case 0x08: /* modem failure */
-#ifndef MODEM_NOT_LOG
- printk(KERN_INFO "%s: modem failure!\n", card->devname);
-#endif /* MODEM_NOT_LOG */
- api_oob_event(card,mb);
- break;
-
- case 0x09: /* N2 retry limit */
- printk(KERN_INFO "%s: exceeded HDLC retry limit!\n",
- card->devname);
- api_oob_event(card,mb);
- break;
-
- case 0x06: /* unnumbered frame was received while in ABM */
- printk(KERN_INFO "%s: received Unnumbered frame 0x%02X!\n",
- card->devname, mb->data[0]);
- api_oob_event(card,mb);
- break;
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd)
- ;
- retry = 0; /* abort command */
- break;
-
- case X25RES_NOT_READY:
- retry = 1;
- break;
-
- case 0x01:
- if (card->u.x.LAPB_hdlc)
- break;
-
- if (mb->cmd.command == 0x16)
- break;
- /* I use the goto statement here so if
- * somebody inserts code between the
- * case and default, we will not have
- * ghost problems */
- goto dflt_2;
-
- default:
-dflt_2:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X! Lcn %i\n",
- card->devname, cmd, err, mb->cmd.lcn)
- ;
- retry = 0; /* abort command */
- }
- kfree(mb);
- return retry;
-}
-
-/*====================================================================
- * X.25 Asynchronous Event Handlers
- * These functions are called by the x25_error() and should return 0, if
- * the command resulting in the asynchronous event must be aborted.
- *====================================================================*/
-
-
-
-/*====================================================================
- *Handle X.25 incoming call request.
- * RFC 1356 establishes the following rules:
- * 1. The first octet in the Call User Data (CUD) field of the call
- * request packet contains NLPID identifying protocol encapsulation
- * 2. Calls MUST NOT be accepted unless router supports requested
- * protocol encapsulation.
- * 3. A diagnostic code 249 defined by ISO/IEC 8208 may be used
- * when clearing a call because protocol encapsulation is not
- * supported.
- * 4. If an incoming call is received while a call request is
- * pending (i.e. call collision has occurred), the incoming call
- * shall be rejected and call request shall be retried.
- *====================================================================*/
-
-static int incoming_call (sdla_t* card, int cmd, int lcn, TX25Mbox* mb)
-{
- struct wan_device* wandev = &card->wandev;
- int new_lcn = mb->cmd.lcn;
- struct net_device* dev = get_dev_by_lcn(wandev, new_lcn);
- x25_channel_t* chan = NULL;
- int accept = 0; /* set to '1' if o.k. to accept call */
- unsigned int user_data;
- x25_call_info_t* info;
-
- /* Make sure there is no call collision */
- if (dev != NULL)
- {
- printk(KERN_INFO
- "%s: X.25 incoming call collision on LCN %d!\n",
- card->devname, new_lcn);
-
- x25_clear_call(card, new_lcn, 0, 0);
- return 1;
- }
-
- /* Make sure D bit is not set in call request */
-//FIXME: THIS IS NOT TURE !!!! TAKE IT OUT
-// if (mb->cmd.qdm & 0x02)
-// {
-// printk(KERN_INFO
-// "%s: X.25 incoming call on LCN %d with D-bit set!\n",
-// card->devname, new_lcn);
-//
-// x25_clear_call(card, new_lcn, 0, 0);
-// return 1;
-// }
-
- /* Parse call request data */
- info = kmalloc(sizeof(x25_call_info_t), GFP_ATOMIC);
- if (info == NULL)
- {
- printk(KERN_ERR
- "%s: not enough memory to parse X.25 incoming call "
- "on LCN %d!\n", card->devname, new_lcn);
- x25_clear_call(card, new_lcn, 0, 0);
- return 1;
- }
-
- parse_call_info(mb->data, info);
-
- if (card->u.x.logging)
- printk(KERN_INFO "\n%s: X.25 incoming call on LCN %d!\n",
- card->devname, new_lcn);
-
- /* Conver the first two ASCII characters into an
- * interger. Used to check the incoming protocol
- */
- user_data = hex_to_uint(info->user,2);
-
- /* Find available channel */
- for (dev = wandev->dev; dev; dev = *((struct net_device **)dev->priv)) {
- chan = dev->priv;
-
- if (chan->common.usedby == API)
- continue;
-
- if (!chan->common.svc || (chan->common.state != WAN_DISCONNECTED))
- continue;
-
- if (user_data == NLPID_IP && chan->protocol != htons(ETH_P_IP)){
- printk(KERN_INFO "IP packet but configured for IPX : %x, %x\n",
- htons(chan->protocol), info->user[0]);
- continue;
- }
-
- if (user_data == NLPID_SNAP && chan->protocol != htons(ETH_P_IPX)){
- printk(KERN_INFO "IPX packet but configured for IP: %x\n",
- htons(chan->protocol));
- continue;
- }
- if (strcmp(info->src, chan->addr) == 0)
- break;
-
- /* If just an '@' is specified, accept all incoming calls */
- if (strcmp(chan->addr, "") == 0)
- break;
- }
-
- if (dev == NULL){
-
- /* If the call is not for any WANPIPE interfaces
- * check to see if there is an API listening queue
- * waiting for data. If there is send the packet
- * up the stack.
- */
- if (card->sk != NULL && card->func != NULL){
- if (api_incoming_call(card,mb,new_lcn)){
- x25_clear_call(card, new_lcn, 0, 0);
- }
- accept = 0;
- }else{
- printk(KERN_INFO "%s: no channels available!\n",
- card->devname);
-
- x25_clear_call(card, new_lcn, 0, 0);
- }
-
- }else if (info->nuser == 0){
-
- printk(KERN_INFO
- "%s: no user data in incoming call on LCN %d!\n",
- card->devname, new_lcn)
- ;
- x25_clear_call(card, new_lcn, 0, 0);
-
- }else switch (info->user[0]){
-
- case 0: /* multiplexed */
- chan->protocol = htons(0);
- accept = 1;
- break;
-
- case NLPID_IP: /* IP datagrams */
- accept = 1;
- break;
-
- case NLPID_SNAP: /* IPX datagrams */
- accept = 1;
- break;
-
- default:
- printk(KERN_INFO
- "%s: unsupported NLPID 0x%02X in incoming call "
- "on LCN %d!\n", card->devname, info->user[0], new_lcn);
- x25_clear_call(card, new_lcn, 0, 249);
- }
-
- if (accept && (x25_accept_call(card, new_lcn, 0) == CMD_OK)){
-
- bind_lcn_to_dev (card, chan->dev, new_lcn);
-
- if (x25_get_chan_conf(card, chan) == CMD_OK)
- set_chan_state(dev, WAN_CONNECTED);
- else
- x25_clear_call(card, new_lcn, 0, 0);
- }
- kfree(info);
- return 1;
-}
-
-/*====================================================================
- * Handle accepted call.
- *====================================================================*/
-
-static int call_accepted (sdla_t* card, int cmd, int lcn, TX25Mbox* mb)
-{
- unsigned new_lcn = mb->cmd.lcn;
- struct net_device* dev = find_channel(card, new_lcn);
- x25_channel_t* chan;
-
- if (dev == NULL){
- printk(KERN_INFO
- "%s: clearing orphaned connection on LCN %d!\n",
- card->devname, new_lcn);
- x25_clear_call(card, new_lcn, 0, 0);
- return 1;
- }
-
- if (card->u.x.logging)
- printk(KERN_INFO "%s: X.25 call accepted on Dev %s and LCN %d!\n",
- card->devname, dev->name, new_lcn);
-
- /* Get channel configuration and notify router */
- chan = dev->priv;
- if (x25_get_chan_conf(card, chan) != CMD_OK)
- {
- x25_clear_call(card, new_lcn, 0, 0);
- return 1;
- }
-
- set_chan_state(dev, WAN_CONNECTED);
-
- if (chan->common.usedby == API){
- send_delayed_cmd_result(card,dev,mb);
- bind_lcn_to_dev (card, dev, new_lcn);
- }
-
- return 1;
-}
-
-/*====================================================================
- * Handle cleared call.
- *====================================================================*/
-
-static int call_cleared (sdla_t* card, int cmd, int lcn, TX25Mbox* mb)
-{
- unsigned new_lcn = mb->cmd.lcn;
- struct net_device* dev = find_channel(card, new_lcn);
- x25_channel_t *chan;
- unsigned char old_state;
-
- if (card->u.x.logging){
- printk(KERN_INFO "%s: X.25 clear request on LCN %d! Cause:0x%02X "
- "Diagn:0x%02X\n",
- card->devname, new_lcn, mb->cmd.cause, mb->cmd.diagn);
- }
-
- if (dev == NULL){
- printk(KERN_INFO "%s: X.25 clear request : No device for clear\n",
- card->devname);
- return 1;
- }
-
- chan=dev->priv;
-
- old_state = chan->common.state;
-
- set_chan_state(dev, WAN_DISCONNECTED);
-
- if (chan->common.usedby == API){
-
- switch (old_state){
-
- case WAN_CONNECTING:
- send_delayed_cmd_result(card,dev,mb);
- break;
- case WAN_CONNECTED:
- send_oob_msg(card,dev,mb);
- break;
- }
- }
-
- return ((cmd == X25_WRITE) && (lcn == new_lcn)) ? 0 : 1;
-}
-
-/*====================================================================
- * Handle X.25 restart event.
- *====================================================================*/
-
-static int restart_event (sdla_t* card, int cmd, int lcn, TX25Mbox* mb)
-{
- struct wan_device* wandev = &card->wandev;
- struct net_device* dev;
- x25_channel_t *chan;
- unsigned char old_state;
-
- printk(KERN_INFO
- "%s: X.25 restart request! Cause:0x%02X Diagn:0x%02X\n",
- card->devname, mb->cmd.cause, mb->cmd.diagn);
-
- /* down all logical channels */
- for (dev = wandev->dev; dev; dev = *((struct net_device **)dev->priv)) {
- chan=dev->priv;
- old_state = chan->common.state;
-
- set_chan_state(dev, WAN_DISCONNECTED);
-
- if (chan->common.usedby == API){
- switch (old_state){
-
- case WAN_CONNECTING:
- send_delayed_cmd_result(card,dev,mb);
- break;
- case WAN_CONNECTED:
- send_oob_msg(card,dev,mb);
- break;
- }
- }
- }
- return (cmd == X25_WRITE) ? 0 : 1;
-}
-
-/*====================================================================
- * Handle timeout event.
- *====================================================================*/
-
-static int timeout_event (sdla_t* card, int cmd, int lcn, TX25Mbox* mb)
-{
- unsigned new_lcn = mb->cmd.lcn;
-
- if (mb->cmd.pktType == 0x05) /* call request time out */
- {
- struct net_device* dev = find_channel(card,new_lcn);
-
- printk(KERN_INFO "%s: X.25 call timed timeout on LCN %d!\n",
- card->devname, new_lcn);
-
- if (dev){
- x25_channel_t *chan = dev->priv;
- set_chan_state(dev, WAN_DISCONNECTED);
-
- if (chan->common.usedby == API){
- send_delayed_cmd_result(card,dev,card->mbox);
- }
- }
- }else{
- printk(KERN_INFO "%s: X.25 packet 0x%02X timeout on LCN %d!\n",
- card->devname, mb->cmd.pktType, new_lcn);
- }
- return 1;
-}
-
-/*
- * Miscellaneous
- */
-
-/*====================================================================
- * Establish physical connection.
- * o open HDLC and raise DTR
- *
- * Return: 0 connection established
- * 1 connection is in progress
- * <0 error
- *===================================================================*/
-
-static int connect (sdla_t* card)
-{
- TX25Status* status = card->flags;
-
- if (x25_open_hdlc(card) || x25_setup_hdlc(card))
- return -EIO;
-
- wanpipe_set_state(card, WAN_CONNECTING);
-
- x25_set_intr_mode(card, INTR_ON_TIMER);
- status->imask &= ~INTR_ON_TIMER;
-
- return 1;
-}
-
-/*
- * Tear down physical connection.
- * o close HDLC link
- * o drop DTR
- *
- * Return: 0
- * <0 error
- */
-
-static int disconnect (sdla_t* card)
-{
- wanpipe_set_state(card, WAN_DISCONNECTED);
- x25_set_intr_mode(card, INTR_ON_TIMER); /* disable all interrupt except timer */
- x25_close_hdlc(card); /* close HDLC link */
- x25_set_dtr(card, 0); /* drop DTR */
- return 0;
-}
-
-/*
- * Find network device by its channel number.
- */
-
-static struct net_device* get_dev_by_lcn(struct wan_device* wandev,
- unsigned lcn)
-{
- struct net_device* dev;
-
- for (dev = wandev->dev; dev; dev = *((struct net_device **)dev->priv))
- if (((x25_channel_t*)dev->priv)->common.lcn == lcn)
- break;
- return dev;
-}
-
-/*
- * Initiate connection on the logical channel.
- * o for PVC we just get channel configuration
- * o for SVCs place an X.25 call
- *
- * Return: 0 connected
- * >0 connection in progress
- * <0 failure
- */
-
-static int chan_connect(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
-
- if (chan->common.svc && chan->common.usedby == WANPIPE){
- if (!chan->addr[0]){
- printk(KERN_INFO "%s: No Destination Address\n",
- card->devname);
- return -EINVAL; /* no destination address */
- }
- printk(KERN_INFO "%s: placing X.25 call to %s ...\n",
- card->devname, chan->addr);
-
- if (x25_place_call(card, chan) != CMD_OK)
- return -EIO;
-
- set_chan_state(dev, WAN_CONNECTING);
- return 1;
- }else{
- if (x25_get_chan_conf(card, chan) != CMD_OK)
- return -EIO;
-
- set_chan_state(dev, WAN_CONNECTED);
- }
- return 0;
-}
-
-/*
- * Disconnect logical channel.
- * o if SVC then clear X.25 call
- */
-
-static int chan_disc(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
-
- if (chan->common.svc){
- x25_clear_call(chan->card, chan->common.lcn, 0, 0);
-
- /* For API we disconnect on clear
- * confirmation.
- */
- if (chan->common.usedby == API)
- return 0;
- }
-
- set_chan_state(dev, WAN_DISCONNECTED);
-
- return 0;
-}
-
-/*
- * Set logical channel state.
- */
-
-static void set_chan_state(struct net_device* dev, int state)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- unsigned long flags;
-
- save_flags(flags);
- cli();
- if (chan->common.state != state)
- {
- switch (state)
- {
- case WAN_CONNECTED:
- if (card->u.x.logging){
- printk (KERN_INFO
- "%s: interface %s connected, lcn %i !\n",
- card->devname, dev->name,chan->common.lcn);
- }
- *(unsigned short*)dev->dev_addr = htons(chan->common.lcn);
- chan->i_timeout_sofar = jiffies;
-
- /* LAPB is PVC Based */
- if (card->u.x.LAPB_hdlc)
- chan->common.svc=0;
- break;
-
- case WAN_CONNECTING:
- if (card->u.x.logging){
- printk (KERN_INFO
- "%s: interface %s connecting, lcn %i ...\n",
- card->devname, dev->name, chan->common.lcn);
- }
- break;
-
- case WAN_DISCONNECTED:
- if (card->u.x.logging){
- printk (KERN_INFO
- "%s: interface %s disconnected, lcn %i !\n",
- card->devname, dev->name,chan->common.lcn);
- }
- atomic_set(&chan->common.disconnect,0);
-
- if (chan->common.svc) {
- *(unsigned short*)dev->dev_addr = 0;
- card->u.x.svc_to_dev_map[(chan->common.lcn%X25_MAX_CHAN)]=NULL;
- chan->common.lcn = 0;
- }
-
- if (chan->transmit_length){
- chan->transmit_length=0;
- atomic_set(&chan->common.driver_busy,0);
- chan->tx_offset=0;
- if (netif_queue_stopped(dev)){
- netif_wake_queue(dev);
- }
- }
- atomic_set(&chan->common.command,0);
- break;
-
- case WAN_DISCONNECTING:
- if (card->u.x.logging){
- printk (KERN_INFO
- "\n%s: interface %s disconnecting, lcn %i ...\n",
- card->devname, dev->name,chan->common.lcn);
- }
- atomic_set(&chan->common.disconnect,0);
- break;
- }
- chan->common.state = state;
- }
- chan->state_tick = jiffies;
- restore_flags(flags);
-}
-
-/*
- * Send packet on a logical channel.
- * When this function is called, tx_skb field of the channel data
- * space points to the transmit socket buffer. When transmission
- * is complete, release socket buffer and reset 'tbusy' flag.
- *
- * Return: 0 - transmission complete
- * 1 - busy
- *
- * Notes:
- * 1. If packet length is greater than MTU for this channel, we'll fragment
- * the packet into 'complete sequence' using M-bit.
- * 2. When transmission is complete, an event notification should be issued
- * to the router.
- */
-
-static int chan_send(struct net_device* dev, void* buff, unsigned data_len,
- unsigned char tx_intr)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- TX25Status* status = card->flags;
- unsigned len=0, qdm=0, res=0, orig_len = 0;
- void *data;
-
- /* Check to see if channel is ready */
- if ((!(status->cflags[chan->ch_idx] & 0x40) && !card->u.x.LAPB_hdlc) ||
- !(*card->u.x.hdlc_buf_status & 0x40)){
-
- if (!tx_intr){
- setup_for_delayed_transmit (dev, buff, data_len);
- return 0;
- }else{
- /* By returning 0 to tx_intr the packet will be dropped */
- ++card->wandev.stats.tx_dropped;
- ++chan->ifstats.tx_dropped;
- printk(KERN_INFO "%s: ERROR, Tx intr could not send, dropping %s:\n",
- card->devname,dev->name);
- ++chan->if_send_stat.if_send_bfr_not_passed_to_adptr;
- return 0;
- }
- }
-
- if (chan->common.usedby == API){
- /* Remove the API Header */
- x25api_hdr_t *api_data = (x25api_hdr_t *)buff;
-
- /* Set the qdm bits from the packet header
- * User has the option to set the qdm bits
- */
- qdm = api_data->qdm;
-
- orig_len = len = data_len - sizeof(x25api_hdr_t);
- data = (unsigned char*)buff + sizeof(x25api_hdr_t);
- }else{
- data = buff;
- orig_len = len = data_len;
- }
-
- if (tx_intr){
- /* We are in tx_intr, minus the tx_offset from
- * the total length. The tx_offset part of the
- * data has already been sent. Also, move the
- * data pointer to proper offset location.
- */
- len -= chan->tx_offset;
- data = (unsigned char*)data + chan->tx_offset;
- }
-
- /* Check if the packet length is greater than MTU
- * If YES: Cut the len to MTU and set the M bit
- */
- if (len > chan->tx_pkt_size && !card->u.x.LAPB_hdlc){
- len = chan->tx_pkt_size;
- qdm |= M_BIT;
- }
-
-
- /* Pass only first three bits of the qdm byte to the send
- * routine. In case user sets any other bit which might
- * cause errors.
- */
-
- switch(x25_send(card, chan->common.lcn, (qdm&0x07), len, data)){
- case 0x00: /* success */
- chan->i_timeout_sofar = jiffies;
-
- dev->trans_start=jiffies;
-
- if ((qdm & M_BIT) && !card->u.x.LAPB_hdlc){
- if (!tx_intr){
- /* The M bit was set, which means that part of the
- * packet has been sent. Copy the packet into a buffer
- * and set the offset to len, so on next tx_inter
- * the packet will be sent using the below offset.
- */
- chan->tx_offset += len;
-
- ++chan->ifstats.tx_packets;
- chan->ifstats.tx_bytes += len;
-
- if (chan->tx_offset < orig_len){
- setup_for_delayed_transmit (dev, buff, data_len);
- }
- res=0;
- }else{
- /* We are already in tx_inter, thus data is already
- * in the buffer. Update the offset and wait for
- * next tx_intr. We add on to the offset, since data can
- * be X number of times larger than max data size.
- */
- ++chan->ifstats.tx_packets;
- chan->ifstats.tx_bytes += len;
-
- ++chan->if_send_stat.if_send_bfr_passed_to_adptr;
- chan->tx_offset += len;
-
- /* The user can set the qdm bit as well.
- * If the entire packet was sent and qdm is still
- * set, than it's the user who has set the M bit. In that,
- * case indicate that the packet was send by returning
- * 0 and wait for a new packet. Otherwise, wait for next
- * tx interrupt to send the rest of the packet */
-
- if (chan->tx_offset < orig_len){
- res=1;
- }else{
- res=0;
- }
- }
- }else{
- ++chan->ifstats.tx_packets;
- chan->ifstats.tx_bytes += len;
- ++chan->if_send_stat.if_send_bfr_passed_to_adptr;
- res=0;
- }
- break;
-
- case 0x33: /* Tx busy */
- if (tx_intr){
- printk(KERN_INFO "%s: Tx_intr: Big Error dropping packet %s\n",
- card->devname,dev->name);
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- ++chan->if_send_stat.if_send_bfr_not_passed_to_adptr;
- res=0;
- }else{
- DBG_PRINTK(KERN_INFO
- "%s: Send: Big Error should have tx: storring %s\n",
- card->devname,dev->name);
- setup_for_delayed_transmit (dev, buff, data_len);
- res=1;
- }
- break;
-
- default: /* failure */
- ++chan->ifstats.tx_errors;
- if (tx_intr){
- printk(KERN_INFO "%s: Tx_intr: Failure to send, dropping %s\n",
- card->devname,dev->name);
- ++chan->ifstats.tx_dropped;
- ++card->wandev.stats.tx_dropped;
- ++chan->if_send_stat.if_send_bfr_not_passed_to_adptr;
- res=0;
- }else{
- DBG_PRINTK(KERN_INFO "%s: Send: Failure to send !!!, storing %s\n",
- card->devname,dev->name);
- setup_for_delayed_transmit (dev, buff, data_len);
- res=1;
- }
- break;
- }
- return res;
-}
-
-
-/*
- * Parse X.25 call request data and fill x25_call_info_t structure.
- */
-
-static void parse_call_info (unsigned char* str, x25_call_info_t* info)
-{
- memset(info, 0, sizeof(x25_call_info_t));
- for (; *str; ++str)
- {
- int i;
- unsigned char ch;
-
- if (*str == '-') switch (str[1]) {
-
- /* Take minus 2 off the maximum size so that
- * last byte is 0. This way we can use string
- * manipulaton functions on call information.
- */
-
- case 'd': /* destination address */
- for (i = 0; i < (MAX_X25_ADDR_SIZE-2); ++i){
- ch = str[2+i];
- if (isspace(ch)) break;
- info->dest[i] = ch;
- }
- break;
-
- case 's': /* source address */
- for (i = 0; i < (MAX_X25_ADDR_SIZE-2); ++i){
- ch = str[2+i];
- if (isspace(ch)) break;
- info->src[i] = ch;
- }
- break;
-
- case 'u': /* user data */
- for (i = 0; i < (MAX_X25_DATA_SIZE-2); ++i){
- ch = str[2+i];
- if (isspace(ch)) break;
- info->user[i] = ch;
- }
- info->nuser = i;
- break;
-
- case 'f': /* facilities */
- for (i = 0; i < (MAX_X25_FACL_SIZE-2); ++i){
- ch = str[2+i];
- if (isspace(ch)) break;
- info->facil[i] = ch;
- }
- info->nfacil = i;
- break;
- }
- }
-}
-
-/*
- * Convert line speed in bps to a number used by S502 code.
- */
-
-static unsigned char bps_to_speed_code (unsigned long bps)
-{
- unsigned char number;
-
- if (bps <= 1200) number = 0x01;
- else if (bps <= 2400) number = 0x02;
- else if (bps <= 4800) number = 0x03;
- else if (bps <= 9600) number = 0x04;
- else if (bps <= 19200) number = 0x05;
- else if (bps <= 38400) number = 0x06;
- else if (bps <= 45000) number = 0x07;
- else if (bps <= 56000) number = 0x08;
- else if (bps <= 64000) number = 0x09;
- else if (bps <= 74000) number = 0x0A;
- else if (bps <= 112000) number = 0x0B;
- else if (bps <= 128000) number = 0x0C;
- else number = 0x0D;
-
- return number;
-}
-
-/*
- * Convert decimal string to unsigned integer.
- * If len != 0 then only 'len' characters of the string are converted.
- */
-
-static unsigned int dec_to_uint (unsigned char* str, int len)
-{
- unsigned val;
-
- if (!len)
- len = strlen(str);
-
- for (val = 0; len && isdigit(*str); ++str, --len)
- val = (val * 10) + (*str - (unsigned)'0');
-
- return val;
-}
-
-/*
- * Convert hex string to unsigned integer.
- * If len != 0 then only 'len' characters of the string are conferted.
- */
-
-static unsigned int hex_to_uint (unsigned char* str, int len)
-{
- unsigned val, ch;
-
- if (!len)
- len = strlen(str);
-
- for (val = 0; len; ++str, --len)
- {
- ch = *str;
- if (isdigit(ch))
- val = (val << 4) + (ch - (unsigned)'0');
- else if (isxdigit(ch))
- val = (val << 4) + ((ch & 0xDF) - (unsigned)'A' + 10);
- else break;
- }
- return val;
-}
-
-
-static int handle_IPXWAN(unsigned char *sendpacket, char *devname, unsigned char enable_IPX, unsigned long network_number, unsigned short proto)
-{
- int i;
-
- if( proto == ETH_P_IPX) {
- /* It's an IPX packet */
- if(!enable_IPX) {
- /* Return 1 so we don't pass it up the stack. */
- return 1;
- }
- } else {
- /* It's not IPX so pass it up the stack.*/
- return 0;
- }
-
- if( sendpacket[16] == 0x90 &&
- sendpacket[17] == 0x04)
- {
- /* It's IPXWAN */
-
- if( sendpacket[2] == 0x02 &&
- sendpacket[34] == 0x00)
- {
- /* It's a timer request packet */
- printk(KERN_INFO "%s: Received IPXWAN Timer Request packet\n",devname);
-
- /* Go through the routing options and answer no to every
- * option except Unnumbered RIP/SAP
- */
- for(i = 41; sendpacket[i] == 0x00; i += 5)
- {
- /* 0x02 is the option for Unnumbered RIP/SAP */
- if( sendpacket[i + 4] != 0x02)
- {
- sendpacket[i + 1] = 0;
- }
- }
-
- /* Skip over the extended Node ID option */
- if( sendpacket[i] == 0x04 )
- {
- i += 8;
- }
-
- /* We also want to turn off all header compression opt. */
- for(; sendpacket[i] == 0x80 ;)
- {
- sendpacket[i + 1] = 0;
- i += (sendpacket[i + 2] << 8) + (sendpacket[i + 3]) + 4;
- }
-
- /* Set the packet type to timer response */
- sendpacket[34] = 0x01;
-
- printk(KERN_INFO "%s: Sending IPXWAN Timer Response\n",devname);
- }
- else if( sendpacket[34] == 0x02 )
- {
- /* This is an information request packet */
- printk(KERN_INFO "%s: Received IPXWAN Information Request packet\n",devname);
-
- /* Set the packet type to information response */
- sendpacket[34] = 0x03;
-
- /* Set the router name */
- sendpacket[51] = 'X';
- sendpacket[52] = 'T';
- sendpacket[53] = 'P';
- sendpacket[54] = 'I';
- sendpacket[55] = 'P';
- sendpacket[56] = 'E';
- sendpacket[57] = '-';
- sendpacket[58] = CVHexToAscii(network_number >> 28);
- sendpacket[59] = CVHexToAscii((network_number & 0x0F000000)>> 24);
- sendpacket[60] = CVHexToAscii((network_number & 0x00F00000)>> 20);
- sendpacket[61] = CVHexToAscii((network_number & 0x000F0000)>> 16);
- sendpacket[62] = CVHexToAscii((network_number & 0x0000F000)>> 12);
- sendpacket[63] = CVHexToAscii((network_number & 0x00000F00)>> 8);
- sendpacket[64] = CVHexToAscii((network_number & 0x000000F0)>> 4);
- sendpacket[65] = CVHexToAscii(network_number & 0x0000000F);
- for(i = 66; i < 99; i+= 1)
- {
- sendpacket[i] = 0;
- }
-
- printk(KERN_INFO "%s: Sending IPXWAN Information Response packet\n",devname);
- }
- else
- {
- printk(KERN_INFO "%s: Unknown IPXWAN packet!\n",devname);
- return 0;
- }
-
- /* Set the WNodeID to our network address */
- sendpacket[35] = (unsigned char)(network_number >> 24);
- sendpacket[36] = (unsigned char)((network_number & 0x00FF0000) >> 16);
- sendpacket[37] = (unsigned char)((network_number & 0x0000FF00) >> 8);
- sendpacket[38] = (unsigned char)(network_number & 0x000000FF);
-
- return 1;
- } else {
- /*If we get here it's an IPX-data packet, so it'll get passed up the stack.
- */
- /* switch the network numbers */
- switch_net_numbers(sendpacket, network_number, 1);
- return 0;
- }
-}
-
-/*
- * If incoming is 0 (outgoing)- if the net numbers is ours make it 0
- * if incoming is 1 - if the net number is 0 make it ours
- */
-
-static void switch_net_numbers(unsigned char *sendpacket, unsigned long network_number, unsigned char incoming)
-{
- unsigned long pnetwork_number;
-
- pnetwork_number = (unsigned long)((sendpacket[6] << 24) +
- (sendpacket[7] << 16) + (sendpacket[8] << 8) +
- sendpacket[9]);
-
-
- if (!incoming) {
- /*If the destination network number is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[6] = sendpacket[7] = sendpacket[8] =
- sendpacket[9] = 0x00;
- }
- } else {
- /* If the incoming network is 0, make it ours */
- if( pnetwork_number == 0) {
- sendpacket[6] = (unsigned char)(network_number >> 24);
- sendpacket[7] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[8] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[9] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-
-
- pnetwork_number = (unsigned long)((sendpacket[18] << 24) +
- (sendpacket[19] << 16) + (sendpacket[20] << 8) +
- sendpacket[21]);
-
-
- if( !incoming ) {
- /* If the source network is ours, make it 0 */
- if( pnetwork_number == network_number) {
- sendpacket[18] = sendpacket[19] = sendpacket[20] =
- sendpacket[21] = 0x00;
- }
- } else {
- /* If the source network is 0, make it ours */
- if( pnetwork_number == 0 ) {
- sendpacket[18] = (unsigned char)(network_number >> 24);
- sendpacket[19] = (unsigned char)((network_number &
- 0x00FF0000) >> 16);
- sendpacket[20] = (unsigned char)((network_number &
- 0x0000FF00) >> 8);
- sendpacket[21] = (unsigned char)(network_number &
- 0x000000FF);
- }
- }
-} /* switch_net_numbers */
-
-
-
-
-/********************* X25API SPECIFIC FUNCTIONS ****************/
-
-
-/*===============================================================
- * find_channel
- *
- * Manages the lcn to device map. It increases performance
- * because it eliminates the need to search through the link
- * list for a device which is bounded to a specific lcn.
- *
- *===============================================================*/
-
-
-struct net_device *find_channel(sdla_t *card, unsigned lcn)
-{
- if (card->u.x.LAPB_hdlc){
-
- return card->wandev.dev;
-
- }else{
- /* We don't know whether the incoming lcn
- * is a PVC or an SVC channel. But we do know that
- * the lcn cannot be for both the PVC and the SVC
- * channel.
-
- * If the lcn number is greater or equal to 255,
- * take the modulo 255 of that number. We only have
- * 255 locations, thus higher numbers must be mapped
- * to a number between 0 and 245.
-
- * We must separate pvc's and svc's since two don't
- * have to be contiguous. Meaning pvc's can start
- * from 1 to 10 and svc's can start from 256 to 266.
- * But 256%255 is 1, i.e. CONFLICT.
- */
-
-
- /* Highest LCN number must be less or equal to 4096 */
- if ((lcn <= MAX_LCN_NUM) && (lcn > 0)){
-
- if (lcn < X25_MAX_CHAN){
- if (card->u.x.svc_to_dev_map[lcn])
- return card->u.x.svc_to_dev_map[lcn];
-
- if (card->u.x.pvc_to_dev_map[lcn])
- return card->u.x.pvc_to_dev_map[lcn];
-
- }else{
- int new_lcn = lcn%X25_MAX_CHAN;
- if (card->u.x.svc_to_dev_map[new_lcn])
- return card->u.x.svc_to_dev_map[new_lcn];
-
- if (card->u.x.pvc_to_dev_map[new_lcn])
- return card->u.x.pvc_to_dev_map[new_lcn];
- }
- }
- return NULL;
- }
-}
-
-void bind_lcn_to_dev(sdla_t *card, struct net_device *dev, unsigned lcn)
-{
- x25_channel_t *chan = dev->priv;
-
- /* Modulo the lcn number by X25_MAX_CHAN (255)
- * because the lcn number can be greater than 255
- *
- * We need to split svc and pvc since they don't have
- * to be contigous.
- */
-
- if (chan->common.svc){
- card->u.x.svc_to_dev_map[(lcn % X25_MAX_CHAN)] = dev;
- }else{
- card->u.x.pvc_to_dev_map[(lcn % X25_MAX_CHAN)] = dev;
- }
- chan->common.lcn = lcn;
-}
-
-
-
-/*===============================================================
- * x25api_bh
- *
- *
- *==============================================================*/
-
-static void x25api_bh(struct net_device* dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t* card = chan->card;
- struct sk_buff *skb;
-
- if (atomic_read(&chan->bh_buff_used) == 0){
- printk(KERN_INFO "%s: BH Buffer Empty in BH\n",
- card->devname);
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- while (atomic_read(&chan->bh_buff_used)){
-
- /* If the sock is in the process of unlinking the
- * driver from the socket, we must get out.
- * This never happends but is a sanity check. */
- if (test_bit(0,&chan->common.common_critical)){
- clear_bit(0, &chan->tq_working);
- return;
- }
-
- /* If LAPB HDLC, do not drop packets if socket is
- * not connected. Let the buffer fill up and
- * turn off rx interrupt */
- if (card->u.x.LAPB_hdlc){
- if (chan->common.sk == NULL || chan->common.func == NULL){
- clear_bit(0, &chan->tq_working);
- return;
- }
- }
-
- skb = ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb;
-
- if (skb == NULL){
- printk(KERN_INFO "%s: BH Skb empty for read %i\n",
- card->devname,chan->bh_read);
- }else{
-
- if (chan->common.sk == NULL || chan->common.func == NULL){
- printk(KERN_INFO "%s: BH: Socket disconnected, dropping\n",
- card->devname);
- dev_kfree_skb_any(skb);
- x25api_bh_cleanup(dev);
- ++chan->ifstats.rx_dropped;
- ++chan->rx_intr_stat.rx_intr_bfr_not_passed_to_stack;
- continue;
- }
-
-
- if (chan->common.func(skb,dev,chan->common.sk) != 0){
- /* Sock full cannot send, queue us for another
- * try
- */
- printk(KERN_INFO "%s: BH: !!! Packet failed to send !!!!! \n",
- card->devname);
- atomic_set(&chan->common.receive_block,1);
- return;
- }else{
- x25api_bh_cleanup(dev);
- ++chan->rx_intr_stat.rx_intr_bfr_passed_to_stack;
- }
- }
- }
- clear_bit(0, &chan->tq_working);
-
- return;
-}
-
-/*===============================================================
- * x25api_bh_cleanup
- *
- *
- *==============================================================*/
-
-static int x25api_bh_cleanup(struct net_device *dev)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
- TX25Status* status = card->flags;
-
-
- ((bh_data_t *)&chan->bh_head[chan->bh_read])->skb = NULL;
-
- if (chan->bh_read == MAX_BH_BUFF){
- chan->bh_read=0;
- }else{
- ++chan->bh_read;
- }
-
- /* If the Receive interrupt was off, it means
- * that we filled up our circular buffer. Check
- * that we have space in the buffer. If so
- * turn the RX interrupt back on.
- */
- if (!(status->imask & INTR_ON_RX_FRAME)){
- if (atomic_read(&chan->bh_buff_used) < (MAX_BH_BUFF+1)){
- printk(KERN_INFO "%s: BH: Turning on the interrupt\n",
- card->devname);
- status->imask |= INTR_ON_RX_FRAME;
- }
- }
-
- atomic_dec(&chan->bh_buff_used);
- return 0;
-}
-
-
-/*===============================================================
- * bh_enqueue
- *
- *
- *==============================================================*/
-
-static int bh_enqueue(struct net_device *dev, struct sk_buff *skb)
-{
- x25_channel_t* chan = dev->priv;
- sdla_t *card = chan->card;
- TX25Status* status = card->flags;
-
- if (atomic_read(&chan->bh_buff_used) == (MAX_BH_BUFF+1)){
- printk(KERN_INFO "%s: Bottom half buffer FULL\n",
- card->devname);
- return 1;
- }
-
- ((bh_data_t *)&chan->bh_head[chan->bh_write])->skb = skb;
-
- if (chan->bh_write == MAX_BH_BUFF){
- chan->bh_write=0;
- }else{
- ++chan->bh_write;
- }
-
- atomic_inc(&chan->bh_buff_used);
-
- if (atomic_read(&chan->bh_buff_used) == (MAX_BH_BUFF+1)){
- printk(KERN_INFO "%s: Buffer is now full, Turning off RX Intr\n",
- card->devname);
- status->imask &= ~INTR_ON_RX_FRAME;
- }
-
- return 0;
-}
-
-
-/*===============================================================
- * timer_intr_cmd_exec
- *
- * Called by timer interrupt to execute a command
- *===============================================================*/
-
-static int timer_intr_cmd_exec (sdla_t* card)
-{
- struct net_device *dev;
- unsigned char more_to_exec=0;
- volatile x25_channel_t *chan=NULL;
- int i=0,bad_cmd=0,err=0;
-
- if (card->u.x.cmd_dev == NULL){
- card->u.x.cmd_dev = card->wandev.dev;
- }
-
- dev = card->u.x.cmd_dev;
-
- for (;;){
-
- chan = dev->priv;
-
- if (atomic_read(&chan->common.command)){
-
- bad_cmd = check_bad_command(card,dev);
-
- if ((!chan->common.mbox || atomic_read(&chan->common.disconnect)) &&
- !bad_cmd){
-
- /* Socket has died or exited, We must bring the
- * channel down before anybody else tries to
- * use it */
- err = channel_disconnect(card,dev);
- }else{
- err = execute_delayed_cmd(card, dev,
- (mbox_cmd_t*)chan->common.mbox,
- bad_cmd);
- }
-
- switch (err){
-
- case RETURN_RESULT:
-
- /* Return the result to the socket without
- * delay. NO_WAIT Command */
- atomic_set(&chan->common.command,0);
- if (atomic_read(&card->u.x.command_busy))
- atomic_set(&card->u.x.command_busy,0);
-
- send_delayed_cmd_result(card,dev,card->mbox);
-
- more_to_exec=0;
- break;
- case DELAY_RESULT:
-
- /* Wait for the remote to respond, before
- * sending the result up to the socket.
- * WAIT command */
- if (atomic_read(&card->u.x.command_busy))
- atomic_set(&card->u.x.command_busy,0);
-
- atomic_set(&chan->common.command,0);
- more_to_exec=0;
- break;
- default:
-
- /* If command could not be executed for
- * some reason (i.e return code 0x33 busy)
- * set the more_to_exec bit which will
- * indicate that this command must be exectued
- * again during next timer interrupt
- */
- more_to_exec=1;
- if (atomic_read(&card->u.x.command_busy) == 0)
- atomic_set(&card->u.x.command_busy,1);
- break;
- }
-
- bad_cmd=0;
-
- /* If flags is set, there are no hdlc buffers,
- * thus, wait for the next pass and try the
- * same command again. Otherwise, start searching
- * from next device on the next pass.
- */
- if (!more_to_exec){
- dev = move_dev_to_next(card,dev);
- }
- break;
- }else{
- /* This device has nothing to execute,
- * go to next.
- */
- if (atomic_read(&card->u.x.command_busy))
- atomic_set(&card->u.x.command_busy,0);
- dev = move_dev_to_next(card,dev);
- }
-
- if (++i == card->u.x.no_dev){
- if (!more_to_exec){
- DBG_PRINTK(KERN_INFO "%s: Nothing to execute in Timer\n",
- card->devname);
- if (atomic_read(&card->u.x.command_busy)){
- atomic_set(&card->u.x.command_busy,0);
- }
- }
- break;
- }
-
- } //End of FOR
-
- card->u.x.cmd_dev = dev;
-
- if (more_to_exec){
- /* If more commands are pending, do not turn off timer
- * interrupt */
- return 1;
- }else{
- /* No more commands, turn off timer interrupt */
- return 0;
- }
-}
-
-/*===============================================================
- * execute_delayed_cmd
- *
- * Execute an API command which was passed down from the
- * sock. Sock is very limited in which commands it can
- * execute. Wait and No Wait commands are supported.
- * Place Call, Clear Call and Reset wait commands, where
- * Accept Call is a no_wait command.
- *
- *===============================================================*/
-
-static int execute_delayed_cmd(sdla_t* card, struct net_device *dev,
- mbox_cmd_t *usr_cmd, char bad_cmd)
-{
- TX25Mbox* mbox = card->mbox;
- int err;
- x25_channel_t *chan = dev->priv;
- int delay=RETURN_RESULT;
-
- if (!(*card->u.x.hdlc_buf_status & 0x40) && !bad_cmd){
- return TRY_CMD_AGAIN;
- }
-
- /* This way a command is guaranteed to be executed for
- * a specific lcn, the network interface is bound to. */
- usr_cmd->cmd.lcn = chan->common.lcn;
-
-
- /* If channel is pvc, instead of place call
- * run x25_channel configuration. If running LAPB HDLC
- * enable communications.
- */
- if ((!chan->common.svc) && (usr_cmd->cmd.command == X25_PLACE_CALL)){
-
- if (card->u.x.LAPB_hdlc){
- DBG_PRINTK(KERN_INFO "LAPB: Connecting\n");
- connect(card);
- set_chan_state(dev,WAN_CONNECTING);
- return DELAY_RESULT;
- }else{
- DBG_PRINTK(KERN_INFO "%s: PVC is CONNECTING\n",card->devname);
- if (x25_get_chan_conf(card, chan) == CMD_OK){
- set_chan_state(dev, WAN_CONNECTED);
- }else{
- set_chan_state(dev, WAN_DISCONNECTED);
- }
- return RETURN_RESULT;
- }
- }
-
- /* Copy the socket mbox command onto the board */
-
- memcpy(&mbox->cmd, &usr_cmd->cmd, sizeof(TX25Cmd));
- if (usr_cmd->cmd.length){
- memcpy(mbox->data, usr_cmd->data, usr_cmd->cmd.length);
- }
-
- /* Check if command is bad. We need to copy the cmd into
- * the buffer regardless since we return the, mbox to
- * the user */
- if (bad_cmd){
- mbox->cmd.result=0x01;
- return RETURN_RESULT;
- }
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- if (err != CMD_OK && err != X25RES_NOT_READY)
- x25_error(card, err, usr_cmd->cmd.command, usr_cmd->cmd.lcn);
-
- if (mbox->cmd.result == X25RES_NOT_READY){
- return TRY_CMD_AGAIN;
- }
-
- switch (mbox->cmd.command){
-
- case X25_PLACE_CALL:
-
- switch (mbox->cmd.result){
-
- case CMD_OK:
-
- /* Check if Place call is a wait command or a
- * no wait command */
- if (atomic_read(&chan->common.command) & 0x80)
- delay=RETURN_RESULT;
- else
- delay=DELAY_RESULT;
-
-
- DBG_PRINTK(KERN_INFO "\n%s: PLACE CALL Binding dev %s to lcn %i\n",
- card->devname,dev->name, mbox->cmd.lcn);
-
- bind_lcn_to_dev (card, dev, mbox->cmd.lcn);
- set_chan_state(dev, WAN_CONNECTING);
- break;
-
-
- default:
- delay=RETURN_RESULT;
- set_chan_state(dev, WAN_DISCONNECTED);
- break;
- }
- break;
-
- case X25_ACCEPT_CALL:
-
- switch (mbox->cmd.result){
-
- case CMD_OK:
-
- DBG_PRINTK(KERN_INFO "\n%s: ACCEPT Binding dev %s to lcn %i\n",
- card->devname,dev->name,mbox->cmd.lcn);
-
- bind_lcn_to_dev (card, dev, mbox->cmd.lcn);
-
- if (x25_get_chan_conf(card, chan) == CMD_OK){
-
- set_chan_state(dev, WAN_CONNECTED);
- delay=RETURN_RESULT;
-
- }else{
- if (x25_clear_call(card, usr_cmd->cmd.lcn, 0, 0) == CMD_OK){
- /* if clear is successful, wait for clear confirm
- */
- delay=DELAY_RESULT;
- }else{
- /* Do not change the state here. If we fail
- * the accept the return code is send up
- *the stack, which will ether retry
- * or clear the call
- */
- DBG_PRINTK(KERN_INFO
- "%s: ACCEPT: STATE MAY BE CURRUPTED 2 !!!!!\n",
- card->devname);
- delay=RETURN_RESULT;
- }
- }
- break;
-
-
- case X25RES_ASYNC_PACKET:
- delay=TRY_CMD_AGAIN;
- break;
-
- default:
- DBG_PRINTK(KERN_INFO "%s: ACCEPT FAILED\n",card->devname);
- if (x25_clear_call(card, usr_cmd->cmd.lcn, 0, 0) == CMD_OK){
- delay=DELAY_RESULT;
- }else{
- /* Do not change the state here. If we fail the accept. The
- * return code is send up the stack, which will ether retry
- * or clear the call */
- DBG_PRINTK(KERN_INFO
- "%s: ACCEPT: STATE MAY BE CORRUPTED 1 !!!!!\n",
- card->devname);
- delay=RETURN_RESULT;
- }
- }
- break;
-
- case X25_CLEAR_CALL:
-
- switch (mbox->cmd.result){
-
- case CMD_OK:
- DBG_PRINTK(KERN_INFO
- "CALL CLEAR OK: Dev %s Mbox Lcn %i Chan Lcn %i\n",
- dev->name,mbox->cmd.lcn,chan->common.lcn);
- set_chan_state(dev, WAN_DISCONNECTING);
- delay = DELAY_RESULT;
- break;
-
- case X25RES_CHANNEL_IN_USE:
- case X25RES_ASYNC_PACKET:
- delay = TRY_CMD_AGAIN;
- break;
-
- case X25RES_LINK_NOT_IN_ABM:
- case X25RES_INVAL_LCN:
- case X25RES_INVAL_STATE:
- set_chan_state(dev, WAN_DISCONNECTED);
- delay = RETURN_RESULT;
- break;
-
- default:
- /* If command did not execute because of user
- * fault, do not change the state. This will
- * signal the socket that clear command failed.
- * User can retry or close the socket.
- * When socket gets killed, it will set the
- * chan->disconnect which will signal
- * driver to clear the call */
- printk(KERN_INFO "%s: Clear Command Failed, Rc %x\n",
- card->devname,mbox->cmd.command);
- delay = RETURN_RESULT;
- }
- break;
- }
-
- return delay;
-}
-
-/*===============================================================
- * api_incoming_call
- *
- * Pass an incoming call request up the listening
- * sock. If the API sock is not listening reject the
- * call.
- *
- *===============================================================*/
-
-static int api_incoming_call (sdla_t* card, TX25Mbox *mbox, int lcn)
-{
- struct sk_buff *skb;
- int len = sizeof(TX25Cmd)+mbox->cmd.length;
-
- if (alloc_and_init_skb_buf(card, &skb, len)){
- printk(KERN_INFO "%s: API incoming call, no memory\n",card->devname);
- return 1;
- }
-
- memcpy(skb_put(skb,len),&mbox->cmd,len);
-
- skb->mac.raw = skb->data;
- skb->protocol = htons(X25_PROT);
- skb->pkt_type = WAN_PACKET_ASYNC;
-
- if (card->func(skb,card->sk) < 0){
- printk(KERN_INFO "%s: MAJOR ERROR: Failed to send up place call \n",card->devname);
- dev_kfree_skb_any(skb);
- return 1;
- }
-
- return 0;
-}
-
-/*===============================================================
- * send_delayed_cmd_result
- *
- * Wait commands like PLEACE CALL or CLEAR CALL must wait
- * until the result arrives. This function passes
- * the result to a waiting sock.
- *
- *===============================================================*/
-static void send_delayed_cmd_result(sdla_t *card, struct net_device *dev,
- TX25Mbox* mbox)
-{
- x25_channel_t *chan = dev->priv;
- mbox_cmd_t *usr_cmd = (mbox_cmd_t *)chan->common.mbox;
- struct sk_buff *skb;
- int len=sizeof(unsigned char);
-
- atomic_set(&chan->common.command,0);
-
- /* If the sock is in the process of unlinking the
- * driver from the socket, we must get out.
- * This never happends but is a sanity check. */
- if (test_bit(0,&chan->common.common_critical)){
- return;
- }
-
- if (!usr_cmd || !chan->common.sk || !chan->common.func){
- DBG_PRINTK(KERN_INFO "Delay result: Sock not bounded sk: %u, func: %u, mbox: %u\n",
- (unsigned int)chan->common.sk,
- (unsigned int)chan->common.func,
- (unsigned int)usr_cmd);
- return;
- }
-
- memcpy(&usr_cmd->cmd, &mbox->cmd, sizeof(TX25Cmd));
- if (mbox->cmd.length > 0){
- memcpy(usr_cmd->data, mbox->data, mbox->cmd.length);
- }
-
- if (alloc_and_init_skb_buf(card,&skb,len)){
- printk(KERN_INFO "Delay result: No sock buffers\n");
- return;
- }
-
- memcpy(skb_put(skb,len),&mbox->cmd.command,len);
-
- skb->mac.raw = skb->data;
- skb->pkt_type = WAN_PACKET_CMD;
-
- chan->common.func(skb,dev,chan->common.sk);
-}
-
-/*===============================================================
- * clear_confirm_event
- *
- * Pass the clear confirmation event up the sock. The
- * API will disconnect only after the clear confirmation
- * has been received.
- *
- * Depending on the state, clear confirmation could
- * be an OOB event, or a result of an API command.
- *===============================================================*/
-
-static int clear_confirm_event (sdla_t *card, TX25Mbox* mb)
-{
- struct net_device *dev;
- x25_channel_t *chan;
- unsigned char old_state;
-
- dev = find_channel(card,mb->cmd.lcn);
- if (!dev){
- DBG_PRINTK(KERN_INFO "%s: *** GOT CLEAR BUT NO DEV %i\n",
- card->devname,mb->cmd.lcn);
- return 0;
- }
-
- chan=dev->priv;
- DBG_PRINTK(KERN_INFO "%s: GOT CLEAR CONFIRM %s: Mbox lcn %i Chan lcn %i\n",
- card->devname, dev->name, mb->cmd.lcn, chan->common.lcn);
-
- /* If not API fall through to default.
- * If API, send the result to a waiting
- * socket.
- */
-
- old_state = chan->common.state;
- set_chan_state(dev, WAN_DISCONNECTED);
-
- if (chan->common.usedby == API){
- switch (old_state) {
-
- case WAN_DISCONNECTING:
- case WAN_CONNECTING:
- send_delayed_cmd_result(card,dev,mb);
- break;
- case WAN_CONNECTED:
- send_oob_msg(card,dev,mb);
- break;
- }
- return 1;
- }
-
- return 0;
-}
-
-/*===============================================================
- * send_oob_msg
- *
- * Construct an NEM Message and pass it up the connected
- * sock. If the sock is not bounded discard the NEM.
- *
- *===============================================================*/
-
-static void send_oob_msg(sdla_t *card, struct net_device *dev, TX25Mbox *mbox)
-{
- x25_channel_t *chan = dev->priv;
- mbox_cmd_t *usr_cmd = (mbox_cmd_t *)chan->common.mbox;
- struct sk_buff *skb;
- int len=sizeof(x25api_hdr_t)+mbox->cmd.length;
- x25api_t *api_hdr;
-
- /* If the sock is in the process of unlinking the
- * driver from the socket, we must get out.
- * This never happends but is a sanity check. */
- if (test_bit(0,&chan->common.common_critical)){
- return;
- }
-
- if (!usr_cmd || !chan->common.sk || !chan->common.func){
- DBG_PRINTK(KERN_INFO "OOB MSG: Sock not bounded\n");
- return;
- }
-
- memcpy(&usr_cmd->cmd, &mbox->cmd, sizeof(TX25Cmd));
- if (mbox->cmd.length > 0){
- memcpy(usr_cmd->data, mbox->data, mbox->cmd.length);
- }
-
- if (alloc_and_init_skb_buf(card,&skb,len)){
- printk(KERN_INFO "%s: OOB MSG: No sock buffers\n",card->devname);
- return;
- }
-
- api_hdr = (x25api_t*)skb_put(skb,len);
- api_hdr->hdr.pktType = mbox->cmd.pktType & 0x7F;
- api_hdr->hdr.qdm = mbox->cmd.qdm;
- api_hdr->hdr.cause = mbox->cmd.cause;
- api_hdr->hdr.diagn = mbox->cmd.diagn;
- api_hdr->hdr.length = mbox->cmd.length;
- api_hdr->hdr.result = mbox->cmd.result;
- api_hdr->hdr.lcn = mbox->cmd.lcn;
-
- if (mbox->cmd.length > 0){
- memcpy(api_hdr->data,mbox->data,mbox->cmd.length);
- }
-
- skb->mac.raw = skb->data;
- skb->pkt_type = WAN_PACKET_ERR;
-
- if (chan->common.func(skb,dev,chan->common.sk) < 0){
- if (bh_enqueue(dev,skb)){
- printk(KERN_INFO "%s: Dropping OOB MSG\n",card->devname);
- dev_kfree_skb_any(skb);
- }
- }
-
- DBG_PRINTK(KERN_INFO "%s: OOB MSG OK, %s, lcn %i\n",
- card->devname, dev->name, mbox->cmd.lcn);
-}
-
-/*===============================================================
- * alloc_and_init_skb_buf
- *
- * Allocate and initialize an skb buffer.
- *
- *===============================================================*/
-
-static int alloc_and_init_skb_buf (sdla_t *card, struct sk_buff **skb, int len)
-{
- struct sk_buff *new_skb = *skb;
-
- new_skb = dev_alloc_skb(len + X25_HRDHDR_SZ);
- if (new_skb == NULL){
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- return 1;
- }
-
- if (skb_tailroom(new_skb) < len){
- /* No room for the packet. Call off the whole thing! */
- dev_kfree_skb_any(new_skb);
- printk(KERN_INFO "%s: Listen: unexpectedly long packet sequence\n"
- ,card->devname);
- *skb = NULL;
- return 1;
- }
-
- *skb = new_skb;
- return 0;
-
-}
-
-/*===============================================================
- * api_oob_event
- *
- * Send an OOB event up to the sock
- *
- *===============================================================*/
-
-static void api_oob_event (sdla_t *card,TX25Mbox *mbox)
-{
- struct net_device *dev = find_channel(card, mbox->cmd.lcn);
- x25_channel_t *chan;
-
- if (!dev)
- return;
-
- chan=dev->priv;
-
- if (chan->common.usedby == API)
- send_oob_msg(card,dev,mbox);
-
-}
-
-
-
-
-static int channel_disconnect(sdla_t* card, struct net_device *dev)
-{
-
- int err;
- x25_channel_t *chan = dev->priv;
-
- DBG_PRINTK(KERN_INFO "%s: TIMER: %s, Device down disconnecting\n",
- card->devname,dev->name);
-
- if (chan->common.svc){
- err = x25_clear_call(card,chan->common.lcn,0,0);
- }else{
- /* If channel is PVC or LAPB HDLC, there is no call
- * to be cleared, thus drop down to the default
- * area
- */
- err = 1;
- }
-
- switch (err){
-
- case X25RES_CHANNEL_IN_USE:
- case X25RES_NOT_READY:
- err = TRY_CMD_AGAIN;
- break;
- case CMD_OK:
- DBG_PRINTK(KERN_INFO "CALL CLEAR OK: Dev %s Chan Lcn %i\n",
- dev->name,chan->common.lcn);
-
- set_chan_state(dev,WAN_DISCONNECTING);
- atomic_set(&chan->common.command,0);
- err = DELAY_RESULT;
- break;
- default:
- /* If LAPB HDLC protocol, bring the whole link down
- * once the application terminates
- */
-
- set_chan_state(dev,WAN_DISCONNECTED);
-
- if (card->u.x.LAPB_hdlc){
- DBG_PRINTK(KERN_INFO "LAPB: Disconnecting Link\n");
- hdlc_link_down (card);
- }
- atomic_set(&chan->common.command,0);
- err = RETURN_RESULT;
- break;
- }
-
- return err;
-}
-
-static void hdlc_link_down (sdla_t *card)
-{
- TX25Mbox* mbox = card->mbox;
- int retry = 5;
- int err=0;
-
- do {
- memset(mbox,0,sizeof(TX25Mbox));
- mbox->cmd.command = X25_HDLC_LINK_DISC;
- mbox->cmd.length = 1;
- mbox->data[0]=0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
-
- } while (err && retry-- && x25_error(card, err, X25_HDLC_LINK_DISC, 0));
-
- if (err)
- printk(KERN_INFO "%s: Hdlc Link Down Failed %x\n",card->devname,err);
-
- disconnect (card);
-
-}
-
-static int check_bad_command(sdla_t* card, struct net_device *dev)
-{
- x25_channel_t *chan = dev->priv;
- int bad_cmd = 0;
-
- switch (atomic_read(&chan->common.command)&0x7F){
-
- case X25_PLACE_CALL:
- if (chan->common.state != WAN_DISCONNECTED)
- bad_cmd=1;
- break;
- case X25_CLEAR_CALL:
- if (chan->common.state == WAN_DISCONNECTED)
- bad_cmd=1;
- break;
- case X25_ACCEPT_CALL:
- if (chan->common.state != WAN_CONNECTING)
- bad_cmd=1;
- break;
- case X25_RESET:
- if (chan->common.state != WAN_CONNECTED)
- bad_cmd=1;
- break;
- default:
- bad_cmd=1;
- break;
- }
-
- if (bad_cmd){
- printk(KERN_INFO "%s: Invalid State, BAD Command %x, dev %s, lcn %i, st %i\n",
- card->devname,atomic_read(&chan->common.command),dev->name,
- chan->common.lcn, chan->common.state);
- }
-
- return bad_cmd;
-}
-
-
-
-/*************************** XPIPEMON FUNCTIONS **************************/
-
-/*==============================================================================
- * Process UDP call of type XPIPE
- */
-
-static int process_udp_mgmt_pkt(sdla_t *card)
-{
- int c_retry = MAX_CMD_RETRY;
- unsigned int len;
- struct sk_buff *new_skb;
- TX25Mbox *mbox = card->mbox;
- int err;
- int udp_mgmt_req_valid = 1;
- struct net_device *dev;
- x25_channel_t *chan;
- unsigned short lcn;
- struct timeval tv;
-
-
- x25_udp_pkt_t *x25_udp_pkt;
- x25_udp_pkt = (x25_udp_pkt_t *)card->u.x.udp_pkt_data;
-
- dev = card->u.x.udp_dev;
- chan = dev->priv;
- lcn = chan->common.lcn;
-
- switch(x25_udp_pkt->cblock.command) {
-
- /* XPIPE_ENABLE_TRACE */
- case XPIPE_ENABLE_TRACING:
-
- /* XPIPE_GET_TRACE_INFO */
- case XPIPE_GET_TRACE_INFO:
-
- /* SET FT1 MODE */
- case XPIPE_SET_FT1_MODE:
-
- if(card->u.x.udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_direction_err;
- udp_mgmt_req_valid = 0;
- break;
- }
-
- /* XPIPE_FT1_READ_STATUS */
- case XPIPE_FT1_READ_STATUS:
-
- /* FT1 MONITOR STATUS */
- case XPIPE_FT1_STATUS_CTRL:
- if(card->hw.fwid != SFID_X25_508) {
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_type_err;
- udp_mgmt_req_valid = 0;
- break;
- }
- default:
- break;
- }
-
- if(!udp_mgmt_req_valid) {
- /* set length to 0 */
- x25_udp_pkt->cblock.length = 0;
- /* set return code */
- x25_udp_pkt->cblock.result = (card->hw.fwid != SFID_X25_508) ? 0x1F : 0xCD;
-
- } else {
-
- switch (x25_udp_pkt->cblock.command) {
-
-
- case XPIPE_FLUSH_DRIVER_STATS:
- init_x25_channel_struct(chan);
- init_global_statistics(card);
- mbox->cmd.length = 0;
- break;
-
-
- case XPIPE_DRIVER_STAT_IFSEND:
- memcpy(x25_udp_pkt->data, &chan->if_send_stat, sizeof(if_send_stat_t));
- mbox->cmd.length = sizeof(if_send_stat_t);
- x25_udp_pkt->cblock.length = mbox->cmd.length;
- break;
-
- case XPIPE_DRIVER_STAT_INTR:
- memcpy(&x25_udp_pkt->data[0], &card->statistics, sizeof(global_stats_t));
- memcpy(&x25_udp_pkt->data[sizeof(global_stats_t)],
- &chan->rx_intr_stat, sizeof(rx_intr_stat_t));
-
- mbox->cmd.length = sizeof(global_stats_t) +
- sizeof(rx_intr_stat_t);
- x25_udp_pkt->cblock.length = mbox->cmd.length;
- break;
-
- case XPIPE_DRIVER_STAT_GEN:
- memcpy(x25_udp_pkt->data,
- &chan->pipe_mgmt_stat.UDP_PIPE_mgmt_kmalloc_err,
- sizeof(pipe_mgmt_stat_t));
-
- memcpy(&x25_udp_pkt->data[sizeof(pipe_mgmt_stat_t)],
- &card->statistics, sizeof(global_stats_t));
-
- x25_udp_pkt->cblock.result = 0;
- x25_udp_pkt->cblock.length = sizeof(global_stats_t)+
- sizeof(rx_intr_stat_t);
- mbox->cmd.length = x25_udp_pkt->cblock.length;
- break;
-
- case XPIPE_ROUTER_UP_TIME:
- do_gettimeofday(&tv);
- chan->router_up_time = tv.tv_sec - chan->router_start_time;
- *(unsigned long *)&x25_udp_pkt->data = chan->router_up_time;
- x25_udp_pkt->cblock.length = mbox->cmd.length = 4;
- x25_udp_pkt->cblock.result = 0;
- break;
-
- default :
-
- do {
- memcpy(&mbox->cmd, &x25_udp_pkt->cblock.command, sizeof(TX25Cmd));
- if(mbox->cmd.length){
- memcpy(&mbox->data,
- (char *)x25_udp_pkt->data,
- mbox->cmd.length);
- }
-
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- } while (err && c_retry-- && x25_error(card, err, mbox->cmd.command, 0));
-
-
- if ( err == CMD_OK ||
- (err == 1 &&
- (mbox->cmd.command == 0x06 ||
- mbox->cmd.command == 0x16) ) ){
-
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_OK;
- } else {
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_cmnd_timeout;
- }
-
- /* copy the result back to our buffer */
- memcpy(&x25_udp_pkt->cblock.command, &mbox->cmd, sizeof(TX25Cmd));
-
- if(mbox->cmd.length) {
- memcpy(&x25_udp_pkt->data, &mbox->data, mbox->cmd.length);
- }
- break;
-
- } //switch
-
- }
-
- /* Fill UDP TTL */
-
- x25_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
- len = reply_udp(card->u.x.udp_pkt_data, mbox->cmd.length);
-
-
- if(card->u.x.udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- err = x25_send(card, lcn, 0, len, card->u.x.udp_pkt_data);
- if (!err)
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_send_passed;
- else
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_adptr_send_failed;
-
- } else {
-
- /* Allocate socket buffer */
- if((new_skb = dev_alloc_skb(len)) != NULL) {
- void *buf;
-
- /* copy data into new_skb */
- buf = skb_put(new_skb, len);
- memcpy(buf, card->u.x.udp_pkt_data, len);
-
- /* Decapsulate packet and pass it up the protocol
- stack */
- new_skb->dev = dev;
-
- if (chan->common.usedby == API)
- new_skb->protocol = htons(X25_PROT);
- else
- new_skb->protocol = htons(ETH_P_IP);
-
- new_skb->mac.raw = new_skb->data;
-
- netif_rx(new_skb);
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_passed_to_stack;
-
- } else {
- ++chan->pipe_mgmt_stat.UDP_PIPE_mgmt_no_socket;
- printk(KERN_INFO
- "%s: UDP mgmt cmnd, no socket buffers available!\n",
- card->devname);
- }
- }
-
- card->u.x.udp_pkt_lgth = 0;
-
- return 1;
-}
-
-
-/*==============================================================================
- * Determine what type of UDP call it is. DRVSTATS or XPIPE8ND ?
- */
-static int udp_pkt_type( struct sk_buff *skb, sdla_t* card )
-{
- x25_udp_pkt_t *x25_udp_pkt = (x25_udp_pkt_t *)skb->data;
-
- if((x25_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (x25_udp_pkt->ip_pkt.ver_inet_hdr_length == 0x45) &&
- (x25_udp_pkt->udp_pkt.udp_dst_port == ntohs(card->wandev.udp_port)) &&
- (x25_udp_pkt->wp_mgmt.request_reply == UDPMGMT_REQUEST)) {
-
- if(!strncmp(x25_udp_pkt->wp_mgmt.signature,
- UDPMGMT_XPIPE_SIGNATURE, 8)){
- return UDP_XPIPE_TYPE;
- }else{
- printk(KERN_INFO "%s: UDP Packet, Failed Signature !\n",
- card->devname);
- }
- }
-
- return UDP_INVALID_TYPE;
-}
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return nothing.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
-
-
- x25_udp_pkt_t *x25_udp_pkt = (x25_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* fill in UDP reply */
- x25_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- mbox_len;
-
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound = 1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- x25_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = x25_udp_pkt->udp_pkt.udp_src_port;
- x25_udp_pkt->udp_pkt.udp_src_port =
- x25_udp_pkt->udp_pkt.udp_dst_port;
- x25_udp_pkt->udp_pkt.udp_dst_port = temp;
-
-
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)
- (x25_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)
- (x25_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
- /* calculate UDP checksum */
- x25_udp_pkt->udp_pkt.udp_checksum = 0;
-
- x25_udp_pkt->udp_pkt.udp_checksum =
- calc_checksum(&data[UDP_OFFSET], udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = len;
- temp = (ip_length<<8)|(ip_length>>8);
- x25_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = x25_udp_pkt->ip_pkt.ip_src_address;
- x25_udp_pkt->ip_pkt.ip_src_address =
- x25_udp_pkt->ip_pkt.ip_dst_address;
- x25_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
-
- /* fill in IP checksum */
- x25_udp_pkt->ip_pkt.hdr_checksum = 0;
- x25_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data, sizeof(ip_pkt_t));
-
- return len;
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(int udp_type, char udp_pkt_src, sdla_t* card,
- struct net_device *dev, struct sk_buff *skb,
- int lcn)
-{
- int udp_pkt_stored = 0;
-
- if(!card->u.x.udp_pkt_lgth && (skb->len <= MAX_LGTH_UDP_MGNT_PKT)){
- card->u.x.udp_pkt_lgth = skb->len;
- card->u.x.udp_type = udp_type;
- card->u.x.udp_pkt_src = udp_pkt_src;
- card->u.x.udp_lcn = lcn;
- card->u.x.udp_dev = dev;
- memcpy(card->u.x.udp_pkt_data, skb->data, skb->len);
- card->u.x.timer_int_enabled |= TMR_INT_ENABLED_UDP_PKT;
- udp_pkt_stored = 1;
-
- }else{
- printk(KERN_INFO "%s: ERROR: UDP packet not stored for LCN %d\n",
- card->devname,lcn);
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK){
- dev_kfree_skb_any(skb);
- }else{
- dev_kfree_skb_any(skb);
- }
-
- return(udp_pkt_stored);
-}
-
-
-
-/*=============================================================================
- * Initial the ppp_private_area structure.
- */
-static void init_x25_channel_struct( x25_channel_t *chan )
-{
- memset(&chan->if_send_stat.if_send_entry,0,sizeof(if_send_stat_t));
- memset(&chan->rx_intr_stat.rx_intr_no_socket,0,sizeof(rx_intr_stat_t));
- memset(&chan->pipe_mgmt_stat.UDP_PIPE_mgmt_kmalloc_err,0,sizeof(pipe_mgmt_stat_t));
-}
-
-/*============================================================================
- * Initialize Global Statistics
- */
-static void init_global_statistics( sdla_t *card )
-{
- memset(&card->statistics.isr_entry,0,sizeof(global_stats_t));
-}
-
-
-/*===============================================================
- * SMP Support
- * ==============================================================*/
-
-static void S508_S514_lock(sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
-}
-static void S508_S514_unlock(sdla_t *card, unsigned long *smp_flags)
-{
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-/*===============================================================
- * x25_timer_routine
- *
- * A more efficient polling routine. Each half a second
- * queue a polling task. We want to do the polling in a
- * task not timer, because timer runs in interrupt time.
- *
- * FIXME Polling should be rethinked.
- *==============================================================*/
-
-static void x25_timer_routine(unsigned long data)
-{
- sdla_t *card = (sdla_t*)data;
-
- if (!card->wandev.dev){
- printk(KERN_INFO "%s: Stopping the X25 Poll Timer: No Dev.\n",
- card->devname);
- return;
- }
-
- if (card->open_cnt != card->u.x.num_of_ch){
- printk(KERN_INFO "%s: Stopping the X25 Poll Timer: Interface down.\n",
- card->devname);
- return;
- }
-
- if (test_bit(PERI_CRIT,&card->wandev.critical)){
- printk(KERN_INFO "%s: Stopping the X25 Poll Timer: Shutting down.\n",
- card->devname);
- return;
- }
-
- if (!test_and_set_bit(POLL_CRIT,&card->wandev.critical)){
- trigger_x25_poll(card);
- }
-
- card->u.x.x25_timer.expires=jiffies+(HZ>>1);
- add_timer(&card->u.x.x25_timer);
- return;
-}
-
-void disable_comm_shutdown(sdla_t *card)
-{
- TX25Mbox* mbox = card->mbox;
- int err;
-
- /* Turn of interrutps */
- mbox->data[0] = 0;
- if (card->hw.fwid == SFID_X25_508){
- mbox->data[1] = card->hw.irq;
- mbox->data[2] = 2;
- mbox->cmd.length = 3;
- }else {
- mbox->cmd.length = 1;
- }
- mbox->cmd.command = X25_SET_INTERRUPT_MODE;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- printk(KERN_INFO "INTERRUPT OFF FAIED %x\n",err);
-
- /* Bring down HDLC */
- mbox->cmd.command = X25_HDLC_LINK_CLOSE;
- mbox->cmd.length = 0;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- printk(KERN_INFO "LINK CLOSED FAILED %x\n",err);
-
-
- /* Brind down DTR */
- mbox->data[0] = 0;
- mbox->data[2] = 0;
- mbox->data[1] = 0x01;
- mbox->cmd.length = 3;
- mbox->cmd.command = X25_SET_GLOBAL_VARS;
- err = sdla_exec(mbox) ? mbox->cmd.result : CMD_TIMEOUT;
- if (err)
- printk(KERN_INFO "DTR DOWN FAILED %x\n",err);
-
-}
-
-MODULE_LICENSE("GPL");
-
-/****** End *****************************************************************/
diff --git a/drivers/net/wan/sdladrv.c b/drivers/net/wan/sdladrv.c
deleted file mode 100644
index 032c0f81928..00000000000
--- a/drivers/net/wan/sdladrv.c
+++ /dev/null
@@ -1,2314 +0,0 @@
-/*****************************************************************************
-* sdladrv.c SDLA Support Module. Main module.
-*
-* This module is a library of common hardware-specific functions
-* used by all Sangoma drivers.
-*
-* Author: Gideon Hack
-*
-* Copyright: (c) 1995-2000 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Mar 20, 2001 Nenad Corbic Added the auto_pci_cfg filed, to support
-* the PCISLOT #0.
-* Apr 04, 2000 Nenad Corbic Fixed the auto memory detection code.
-* The memory test at address 0xC8000.
-* Mar 09, 2000 Nenad Corbic Added Gideon's Bug Fix: clear pci
-* interrupt flags on initial load.
-* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
-* Updates for Linux 2.2.X kernels.
-* Sep 17, 1998 Jaspreet Singh Updates for linux 2.2.X kernels
-* Dec 20, 1996 Gene Kozin Version 3.0.0. Complete overhaul.
-* Jul 12, 1996 Gene Kozin Changes for Linux 2.0 compatibility.
-* Jun 12, 1996 Gene Kozin Added support for S503 card.
-* Apr 30, 1996 Gene Kozin SDLA hardware interrupt is acknowledged before
-* calling protocolspecific ISR.
-* Register I/O ports with Linux kernel.
-* Miscellaneous bug fixes.
-* Dec 20, 1995 Gene Kozin Fixed a bug in interrupt routine.
-* Oct 14, 1995 Gene Kozin Initial version.
-*****************************************************************************/
-
-/*****************************************************************************
- * Notes:
- * ------
- * 1. This code is ment to be system-independent (as much as possible). To
- * achive this, various macros are used to hide system-specific interfaces.
- * To compile this code, one of the following constants must be defined:
- *
- * Platform Define
- * -------- ------
- * Linux _LINUX_
- * SCO Unix _SCO_UNIX_
- *
- * 2. Supported adapter types:
- *
- * S502A
- * ES502A (S502E)
- * S503
- * S507
- * S508 (S509)
- *
- * 3. S502A Notes:
- *
- * There is no separate DPM window enable/disable control in S502A. It
- * opens immediately after a window number it written to the HMCR
- * register. To close the window, HMCR has to be written a value
- * ????1111b (e.g. 0x0F or 0xFF).
- *
- * S502A DPM window cannot be located at offset E000 (e.g. 0xAE000).
- *
- * There should be a delay of ??? before reading back S502A status
- * register.
- *
- * 4. S502E Notes:
- *
- * S502E has a h/w bug: although default IRQ line state is HIGH, enabling
- * interrupts by setting bit 1 of the control register (BASE) to '1'
- * causes it to go LOW! Therefore, disabling interrupts by setting that
- * bit to '0' causes low-to-high transition on IRQ line (ghosty
- * interrupt). The same occurs when disabling CPU by resetting bit 0 of
- * CPU control register (BASE+3) - see the next note.
- *
- * S502E CPU and DPM control is limited:
- *
- * o CPU cannot be stopped independently. Resetting bit 0 of the CPUi
- * control register (BASE+3) shuts the board down entirely, including
- * DPM;
- *
- * o DPM access cannot be controlled dynamically. Ones CPU is started,
- * bit 1 of the control register (BASE) is used to enable/disable IRQ,
- * so that access to shared memory cannot be disabled while CPU is
- * running.
- ****************************************************************************/
-
-#define _LINUX_
-
-#if defined(_LINUX_) /****** Linux *******************************/
-
-#include <linux/config.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/module.h> /* support for loadable modules */
-#include <linux/jiffies.h> /* for jiffies, HZ, etc. */
-#include <linux/sdladrv.h> /* API definitions */
-#include <linux/sdlasfm.h> /* SDLA firmware module definitions */
-#include <linux/sdlapci.h> /* SDLA PCI hardware definitions */
-#include <linux/pci.h> /* PCI defines and function prototypes */
-#include <asm/io.h> /* for inb(), outb(), etc. */
-
-#define _INB(port) (inb(port))
-#define _OUTB(port, byte) (outb((byte),(port)))
-#define SYSTEM_TICK jiffies
-
-#include <linux/init.h>
-
-
-#elif defined(_SCO_UNIX_) /****** SCO Unix ****************************/
-
-#if !defined(INKERNEL)
-#error This code MUST be compiled in kernel mode!
-#endif
-#include <sys/sdladrv.h> /* API definitions */
-#include <sys/sdlasfm.h> /* SDLA firmware module definitions */
-#include <sys/inline.h> /* for inb(), outb(), etc. */
-#define _INB(port) (inb(port))
-#define _OUTB(port, byte) (outb((port),(byte)))
-#define SYSTEM_TICK lbolt
-
-#else
-#error Unknown system type!
-#endif
-
-#define MOD_VERSION 3
-#define MOD_RELEASE 0
-
-#define SDLA_IODELAY 100 /* I/O Rd/Wr delay, 10 works for 486DX2-66 */
-#define EXEC_DELAY 20 /* shared memory access delay, mks */
-#define EXEC_TIMEOUT (HZ*2) /* command timeout, in ticks */
-
-/* I/O port address range */
-#define S502A_IORANGE 3
-#define S502E_IORANGE 4
-#define S503_IORANGE 3
-#define S507_IORANGE 4
-#define S508_IORANGE 4
-
-/* Maximum amount of memory */
-#define S502_MAXMEM 0x10000L
-#define S503_MAXMEM 0x10000L
-#define S507_MAXMEM 0x40000L
-#define S508_MAXMEM 0x40000L
-
-/* Minimum amount of memory */
-#define S502_MINMEM 0x8000L
-#define S503_MINMEM 0x8000L
-#define S507_MINMEM 0x20000L
-#define S508_MINMEM 0x20000L
-#define NO_PORT -1
-
-
-
-
-
-/****** Function Prototypes *************************************************/
-
-/* Hardware-specific functions */
-static int sdla_detect (sdlahw_t* hw);
-static int sdla_autodpm (sdlahw_t* hw);
-static int sdla_setdpm (sdlahw_t* hw);
-static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len);
-static int sdla_init (sdlahw_t* hw);
-static unsigned long sdla_memtest (sdlahw_t* hw);
-static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo);
-static unsigned char make_config_byte (sdlahw_t* hw);
-static int sdla_start (sdlahw_t* hw, unsigned addr);
-
-static int init_s502a (sdlahw_t* hw);
-static int init_s502e (sdlahw_t* hw);
-static int init_s503 (sdlahw_t* hw);
-static int init_s507 (sdlahw_t* hw);
-static int init_s508 (sdlahw_t* hw);
-
-static int detect_s502a (int port);
-static int detect_s502e (int port);
-static int detect_s503 (int port);
-static int detect_s507 (int port);
-static int detect_s508 (int port);
-static int detect_s514 (sdlahw_t* hw);
-static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card);
-
-/* Miscellaneous functions */
-static void peek_by_4 (unsigned long src, void* buf, unsigned len);
-static void poke_by_4 (unsigned long dest, void* buf, unsigned len);
-static int calibrate_delay (int mks);
-static int get_option_index (unsigned* optlist, unsigned optval);
-static unsigned check_memregion (void* ptr, unsigned len);
-static unsigned test_memregion (void* ptr, unsigned len);
-static unsigned short checksum (unsigned char* buf, unsigned len);
-static int init_pci_slot(sdlahw_t *);
-
-static int pci_probe(sdlahw_t *hw);
-
-/****** Global Data **********************************************************
- * Note: All data must be explicitly initialized!!!
- */
-
-static struct pci_device_id sdladrv_pci_tbl[] = {
- { V3_VENDOR_ID, V3_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID, },
- { } /* Terminating entry */
-};
-MODULE_DEVICE_TABLE(pci, sdladrv_pci_tbl);
-
-MODULE_LICENSE("GPL");
-
-/* private data */
-static char modname[] = "sdladrv";
-static char fullname[] = "SDLA Support Module";
-static char copyright[] = "(c) 1995-1999 Sangoma Technologies Inc.";
-static unsigned exec_idle;
-
-/* Hardware configuration options.
- * These are arrays of configuration options used by verification routines.
- * The first element of each array is its size (i.e. number of options).
- */
-static unsigned s502_port_options[] =
- { 4, 0x250, 0x300, 0x350, 0x360 }
-;
-static unsigned s503_port_options[] =
- { 8, 0x250, 0x254, 0x300, 0x304, 0x350, 0x354, 0x360, 0x364 }
-;
-static unsigned s508_port_options[] =
- { 8, 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390 }
-;
-
-static unsigned s502a_irq_options[] = { 0 };
-static unsigned s502e_irq_options[] = { 4, 2, 3, 5, 7 };
-static unsigned s503_irq_options[] = { 5, 2, 3, 4, 5, 7 };
-static unsigned s508_irq_options[] = { 8, 3, 4, 5, 7, 10, 11, 12, 15 };
-
-static unsigned s502a_dpmbase_options[] =
-{
- 28,
- 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000,
- 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000,
- 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000,
- 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000,
-};
-static unsigned s507_dpmbase_options[] =
-{
- 32,
- 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
- 0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
- 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
- 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
-};
-static unsigned s508_dpmbase_options[] = /* incl. S502E and S503 */
-{
- 32,
- 0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000,
- 0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
- 0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
- 0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000,
-};
-
-/*
-static unsigned s502_dpmsize_options[] = { 2, 0x2000, 0x10000 };
-static unsigned s507_dpmsize_options[] = { 2, 0x2000, 0x4000 };
-static unsigned s508_dpmsize_options[] = { 1, 0x2000 };
-*/
-
-static unsigned s502a_pclk_options[] = { 2, 3600, 7200 };
-static unsigned s502e_pclk_options[] = { 5, 3600, 5000, 7200, 8000, 10000 };
-static unsigned s503_pclk_options[] = { 3, 7200, 8000, 10000 };
-static unsigned s507_pclk_options[] = { 1, 12288 };
-static unsigned s508_pclk_options[] = { 1, 16000 };
-
-/* Host memory control register masks */
-static unsigned char s502a_hmcr[] =
-{
- 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, /* A0000 - AC000 */
- 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, /* C0000 - CC000 */
- 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, /* D0000 - DC000 */
- 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, /* E0000 - EC000 */
-};
-static unsigned char s502e_hmcr[] =
-{
- 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E, /* A0000 - AE000 */
- 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E, /* C0000 - CE000 */
- 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* D0000 - DE000 */
- 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E, /* E0000 - EE000 */
-};
-static unsigned char s507_hmcr[] =
-{
- 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E, /* A0000 - AE000 */
- 0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E, /* B0000 - BE000 */
- 0x80, 0x82, 0x84, 0x86, 0x88, 0x8A, 0x8C, 0x8E, /* C0000 - CE000 */
- 0xC0, 0xC2, 0xC4, 0xC6, 0xC8, 0xCA, 0xCC, 0xCE, /* E0000 - EE000 */
-};
-static unsigned char s508_hmcr[] =
-{
- 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* A0000 - AE000 */
- 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* C0000 - CE000 */
- 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, /* D0000 - DE000 */
- 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, /* E0000 - EE000 */
-};
-
-static unsigned char s507_irqmask[] =
-{
- 0x00, 0x20, 0x40, 0x60, 0x80, 0xA0, 0xC0, 0xE0
-};
-
-static int pci_slot_ar[MAX_S514_CARDS];
-
-/******* Kernel Loadable Module Entry Points ********************************/
-
-/*============================================================================
- * Module 'insert' entry point.
- * o print announcement
- * o initialize static data
- * o calibrate SDLA shared memory access delay.
- *
- * Return: 0 Ok
- * < 0 error.
- * Context: process
- */
-
-static int __init sdladrv_init(void)
-{
- int i=0;
-
- printk(KERN_INFO "%s v%u.%u %s\n",
- fullname, MOD_VERSION, MOD_RELEASE, copyright);
- exec_idle = calibrate_delay(EXEC_DELAY);
-#ifdef WANDEBUG
- printk(KERN_DEBUG "%s: exec_idle = %d\n", modname, exec_idle);
-#endif
-
- /* Initialize the PCI Card array, which
- * will store flags, used to mark
- * card initialization state */
- for (i=0; i<MAX_S514_CARDS; i++)
- pci_slot_ar[i] = 0xFF;
-
- return 0;
-}
-
-/*============================================================================
- * Module 'remove' entry point.
- * o release all remaining system resources
- */
-static void __exit sdladrv_cleanup(void)
-{
-}
-
-module_init(sdladrv_init);
-module_exit(sdladrv_cleanup);
-
-/******* Kernel APIs ********************************************************/
-
-/*============================================================================
- * Set up adapter.
- * o detect adapter type
- * o verify hardware configuration options
- * o check for hardware conflicts
- * o set up adapter shared memory
- * o test adapter memory
- * o load firmware
- * Return: 0 ok.
- * < 0 error
- */
-
-EXPORT_SYMBOL(sdla_setup);
-
-int sdla_setup (sdlahw_t* hw, void* sfm, unsigned len)
-{
- unsigned* irq_opt = NULL; /* IRQ options */
- unsigned* dpmbase_opt = NULL; /* DPM window base options */
- unsigned* pclk_opt = NULL; /* CPU clock rate options */
- int err=0;
-
- if (sdla_detect(hw)) {
- if(hw->type != SDLA_S514)
- printk(KERN_INFO "%s: no SDLA card found at port 0x%X\n",
- modname, hw->port);
- return -EINVAL;
- }
-
- if(hw->type != SDLA_S514) {
- printk(KERN_INFO "%s: found S%04u card at port 0x%X.\n",
- modname, hw->type, hw->port);
-
- hw->dpmsize = SDLA_WINDOWSIZE;
- switch (hw->type) {
- case SDLA_S502A:
- hw->io_range = S502A_IORANGE;
- irq_opt = s502a_irq_options;
- dpmbase_opt = s502a_dpmbase_options;
- pclk_opt = s502a_pclk_options;
- break;
-
- case SDLA_S502E:
- hw->io_range = S502E_IORANGE;
- irq_opt = s502e_irq_options;
- dpmbase_opt = s508_dpmbase_options;
- pclk_opt = s502e_pclk_options;
- break;
-
- case SDLA_S503:
- hw->io_range = S503_IORANGE;
- irq_opt = s503_irq_options;
- dpmbase_opt = s508_dpmbase_options;
- pclk_opt = s503_pclk_options;
- break;
-
- case SDLA_S507:
- hw->io_range = S507_IORANGE;
- irq_opt = s508_irq_options;
- dpmbase_opt = s507_dpmbase_options;
- pclk_opt = s507_pclk_options;
- break;
-
- case SDLA_S508:
- hw->io_range = S508_IORANGE;
- irq_opt = s508_irq_options;
- dpmbase_opt = s508_dpmbase_options;
- pclk_opt = s508_pclk_options;
- break;
- }
-
- /* Verify IRQ configuration options */
- if (!get_option_index(irq_opt, hw->irq)) {
- printk(KERN_INFO "%s: IRQ %d is invalid!\n",
- modname, hw->irq);
- return -EINVAL;
- }
-
- /* Verify CPU clock rate configuration options */
- if (hw->pclk == 0)
- hw->pclk = pclk_opt[1]; /* use default */
-
- else if (!get_option_index(pclk_opt, hw->pclk)) {
- printk(KERN_INFO "%s: CPU clock %u is invalid!\n",
- modname, hw->pclk);
- return -EINVAL;
- }
- printk(KERN_INFO "%s: assuming CPU clock rate of %u kHz.\n",
- modname, hw->pclk);
-
- /* Setup adapter dual-port memory window and test memory */
- if (hw->dpmbase == 0) {
- err = sdla_autodpm(hw);
- if (err) {
- printk(KERN_INFO
- "%s: can't find available memory region!\n",
- modname);
- return err;
- }
- }
- else if (!get_option_index(dpmbase_opt,
- virt_to_phys(hw->dpmbase))) {
- printk(KERN_INFO
- "%s: memory address 0x%lX is invalid!\n",
- modname, virt_to_phys(hw->dpmbase));
- return -EINVAL;
- }
- else if (sdla_setdpm(hw)) {
- printk(KERN_INFO
- "%s: 8K memory region at 0x%lX is not available!\n",
- modname, virt_to_phys(hw->dpmbase));
- return -EINVAL;
- }
- printk(KERN_INFO
- "%s: dual-port memory window is set at 0x%lX.\n",
- modname, virt_to_phys(hw->dpmbase));
-
-
- /* If we find memory in 0xE**** Memory region,
- * warn the user to disable the SHADOW RAM.
- * Since memory corruption can occur if SHADOW is
- * enabled. This can causes random crashes ! */
- if (virt_to_phys(hw->dpmbase) >= 0xE0000){
- printk(KERN_WARNING "\n%s: !!!!!!!! WARNING !!!!!!!!\n",modname);
- printk(KERN_WARNING "%s: WANPIPE is using 0x%lX memory region !!!\n",
- modname, virt_to_phys(hw->dpmbase));
- printk(KERN_WARNING " Please disable the SHADOW RAM, otherwise\n");
- printk(KERN_WARNING " your system might crash randomly from time to time !\n");
- printk(KERN_WARNING "%s: !!!!!!!! WARNING !!!!!!!!\n\n",modname);
- }
- }
-
- else {
- hw->memory = test_memregion((void*)hw->dpmbase,
- MAX_SIZEOF_S514_MEMORY);
- if(hw->memory < (256 * 1024)) {
- printk(KERN_INFO
- "%s: error in testing S514 memory (0x%lX)\n",
- modname, hw->memory);
- sdla_down(hw);
- return -EINVAL;
- }
- }
-
- printk(KERN_INFO "%s: found %luK bytes of on-board memory\n",
- modname, hw->memory / 1024);
-
- /* Load firmware. If loader fails then shut down adapter */
- err = sdla_load(hw, sfm, len);
- if (err) sdla_down(hw); /* shutdown adapter */
-
- return err;
-}
-
-/*============================================================================
- * Shut down SDLA: disable shared memory access and interrupts, stop CPU, etc.
- */
-
-EXPORT_SYMBOL(sdla_down);
-
-int sdla_down (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int i;
- unsigned char CPU_no;
- u32 int_config, int_status;
-
- if(!port && (hw->type != SDLA_S514))
- return -EFAULT;
-
- switch (hw->type) {
- case SDLA_S502A:
- _OUTB(port, 0x08); /* halt CPU */
- _OUTB(port, 0x08);
- _OUTB(port, 0x08);
- hw->regs[0] = 0x08;
- _OUTB(port + 1, 0xFF); /* close memory window */
- hw->regs[1] = 0xFF;
- break;
-
- case SDLA_S502E:
- _OUTB(port + 3, 0); /* stop CPU */
- _OUTB(port, 0); /* reset board */
- for (i = 0; i < S502E_IORANGE; ++i)
- hw->regs[i] = 0
- ;
- break;
-
- case SDLA_S503:
- case SDLA_S507:
- case SDLA_S508:
- _OUTB(port, 0); /* reset board logic */
- hw->regs[0] = 0;
- break;
-
- case SDLA_S514:
- /* halt the adapter */
- *(char *)hw->vector = S514_CPU_HALT;
- CPU_no = hw->S514_cpu_no[0];
-
- /* disable the PCI IRQ and disable memory access */
- pci_read_config_dword(hw->pci_dev, PCI_INT_CONFIG, &int_config);
- int_config &= (CPU_no == S514_CPU_A) ? ~PCI_DISABLE_IRQ_CPU_A : ~PCI_DISABLE_IRQ_CPU_B;
- pci_write_config_dword(hw->pci_dev, PCI_INT_CONFIG, int_config);
- read_S514_int_stat(hw, &int_status);
- S514_intack(hw, int_status);
- if(CPU_no == S514_CPU_A)
- pci_write_config_dword(hw->pci_dev, PCI_MAP0_DWORD,
- PCI_CPU_A_MEM_DISABLE);
- else
- pci_write_config_dword(hw->pci_dev, PCI_MAP1_DWORD,
- PCI_CPU_B_MEM_DISABLE);
-
- /* free up the allocated virtual memory */
- iounmap((void *)hw->dpmbase);
- iounmap((void *)hw->vector);
- break;
-
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/*============================================================================
- * Map shared memory window into SDLA address space.
- */
-
-EXPORT_SYMBOL(sdla_mapmem);
-
-int sdla_mapmem (sdlahw_t* hw, unsigned long addr)
-{
- unsigned port = hw->port;
- register int tmp;
-
- switch (hw->type) {
- case SDLA_S502A:
- case SDLA_S502E:
- if (addr < S502_MAXMEM) { /* verify parameter */
- tmp = addr >> 13; /* convert to register mask */
- _OUTB(port + 2, tmp);
- hw->regs[2] = tmp;
- }
- else return -EINVAL;
- break;
-
- case SDLA_S503:
- if (addr < S503_MAXMEM) { /* verify parameter */
- tmp = (hw->regs[0] & 0x8F) | ((addr >> 9) & 0x70);
- _OUTB(port, tmp);
- hw->regs[0] = tmp;
- }
- else return -EINVAL;
- break;
-
- case SDLA_S507:
- if (addr < S507_MAXMEM) {
- if (!(_INB(port) & 0x02))
- return -EIO;
- tmp = addr >> 13; /* convert to register mask */
- _OUTB(port + 2, tmp);
- hw->regs[2] = tmp;
- }
- else return -EINVAL;
- break;
-
- case SDLA_S508:
- if (addr < S508_MAXMEM) {
- tmp = addr >> 13; /* convert to register mask */
- _OUTB(port + 2, tmp);
- hw->regs[2] = tmp;
- }
- else return -EINVAL;
- break;
-
- case SDLA_S514:
- return 0;
-
- default:
- return -EINVAL;
- }
- hw->vector = addr & 0xFFFFE000L;
- return 0;
-}
-
-/*============================================================================
- * Enable interrupt generation.
- */
-
-static int sdla_inten (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- switch (hw->type) {
- case SDLA_S502E:
- /* Note thar interrupt control operations on S502E are allowed
- * only if CPU is enabled (bit 0 of status register is set).
- */
- if (_INB(port) & 0x01) {
- _OUTB(port, 0x02); /* bit1 = 1, bit2 = 0 */
- _OUTB(port, 0x06); /* bit1 = 1, bit2 = 1 */
- hw->regs[0] = 0x06;
- }
- else return -EIO;
- break;
-
- case SDLA_S503:
- tmp = hw->regs[0] | 0x04;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (!(_INB(port) & 0x02)) /* verify */
- return -EIO;
- break;
-
- case SDLA_S508:
- tmp = hw->regs[0] | 0x10;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (!(_INB(port + 1) & 0x10)) /* verify */
- return -EIO;
- break;
-
- case SDLA_S502A:
- case SDLA_S507:
- break;
-
- case SDLA_S514:
- break;
-
- default:
- return -EINVAL;
-
- }
- return 0;
-}
-
-/*============================================================================
- * Disable interrupt generation.
- */
-
-#if 0
-int sdla_intde (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- switch (hw->type) {
- case SDLA_S502E:
- /* Notes:
- * 1) interrupt control operations are allowed only if CPU is
- * enabled (bit 0 of status register is set).
- * 2) disabling interrupts using bit 1 of control register
- * causes IRQ line go high, therefore we are going to use
- * 0x04 instead: lower it to inhibit interrupts to PC.
- */
- if (_INB(port) & 0x01) {
- _OUTB(port, hw->regs[0] & ~0x04);
- hw->regs[0] &= ~0x04;
- }
- else return -EIO;
- break;
-
- case SDLA_S503:
- tmp = hw->regs[0] & ~0x04;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) & 0x02) /* verify */
- return -EIO;
- break;
-
- case SDLA_S508:
- tmp = hw->regs[0] & ~0x10;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) & 0x10) /* verify */
- return -EIO;
- break;
-
- case SDLA_S502A:
- case SDLA_S507:
- break;
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-#endif /* 0 */
-
-/*============================================================================
- * Acknowledge SDLA hardware interrupt.
- */
-
-static int sdla_intack (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp;
-
- switch (hw->type) {
- case SDLA_S502E:
- /* To acknoledge hardware interrupt we have to toggle bit 3 of
- * control register: \_/
- * Note that interrupt control operations on S502E are allowed
- * only if CPU is enabled (bit 1 of status register is set).
- */
- if (_INB(port) & 0x01) {
- tmp = hw->regs[0] & ~0x04;
- _OUTB(port, tmp);
- tmp |= 0x04;
- _OUTB(port, tmp);
- hw->regs[0] = tmp;
- }
- else return -EIO;
- break;
-
- case SDLA_S503:
- if (_INB(port) & 0x04) {
- tmp = hw->regs[0] & ~0x08;
- _OUTB(port, tmp);
- tmp |= 0x08;
- _OUTB(port, tmp);
- hw->regs[0] = tmp;
- }
- break;
-
- case SDLA_S502A:
- case SDLA_S507:
- case SDLA_S508:
- break;
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-
-/*============================================================================
- * Acknowledge S514 hardware interrupt.
- */
-
-EXPORT_SYMBOL(S514_intack);
-
-void S514_intack (sdlahw_t* hw, u32 int_status)
-{
- pci_write_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
-}
-
-
-/*============================================================================
- * Read the S514 hardware interrupt status.
- */
-
-EXPORT_SYMBOL(read_S514_int_stat);
-
-void read_S514_int_stat (sdlahw_t* hw, u32* int_status)
-{
- pci_read_config_dword(hw->pci_dev, PCI_INT_STATUS, int_status);
-}
-
-
-/*============================================================================
- * Generate an interrupt to adapter's CPU.
- */
-
-#if 0
-int sdla_intr (sdlahw_t* hw)
-{
- unsigned port = hw->port;
-
- switch (hw->type) {
- case SDLA_S502A:
- if (!(_INB(port) & 0x40)) {
- _OUTB(port, 0x10); /* issue NMI to CPU */
- hw->regs[0] = 0x10;
- }
- else return -EIO;
- break;
-
- case SDLA_S507:
- if ((_INB(port) & 0x06) == 0x06) {
- _OUTB(port + 3, 0);
- }
- else return -EIO;
- break;
-
- case SDLA_S508:
- if (_INB(port + 1) & 0x02) {
- _OUTB(port, 0x08);
- }
- else return -EIO;
- break;
-
- case SDLA_S502E:
- case SDLA_S503:
- default:
- return -EINVAL;
- }
- return 0;
-}
-#endif /* 0 */
-
-/*============================================================================
- * Execute Adapter Command.
- * o Set exec flag.
- * o Busy-wait until flag is reset.
- * o Return number of loops made, or 0 if command timed out.
- */
-
-EXPORT_SYMBOL(sdla_exec);
-
-int sdla_exec (void* opflag)
-{
- volatile unsigned char* flag = opflag;
- unsigned long tstop;
- int nloops;
-
- if(readb(flag) != 0x00) {
- printk(KERN_INFO
- "WANPIPE: opp flag set on entry to sdla_exec\n");
- return 0;
- }
-
- writeb(0x01, flag);
-
- tstop = SYSTEM_TICK + EXEC_TIMEOUT;
-
- for (nloops = 1; (readb(flag) == 0x01); ++ nloops) {
- unsigned delay = exec_idle;
- while (-- delay); /* delay */
- if (SYSTEM_TICK > tstop) return 0; /* time is up! */
- }
- return nloops;
-}
-
-/*============================================================================
- * Read absolute adapter memory.
- * Transfer data from adapter's memory to data buffer.
- *
- * Note:
- * Care should be taken when crossing dual-port memory window boundary.
- * This function is not atomic, so caller must disable interrupt if
- * interrupt routines are accessing adapter shared memory.
- */
-
-EXPORT_SYMBOL(sdla_peek);
-
-int sdla_peek (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
-{
-
- if (addr + len > hw->memory) /* verify arguments */
- return -EINVAL;
-
- if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */
- peek_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
- return 0;
- }
-
- else { /* copy data for the S508 adapter */
- unsigned long oldvec = hw->vector;
- unsigned winsize = hw->dpmsize;
- unsigned curpos, curlen; /* current offset and block size */
- unsigned long curvec; /* current DPM window vector */
- int err = 0;
-
- while (len && !err) {
- curpos = addr % winsize; /* current window offset */
- curvec = addr - curpos; /* current window vector */
- curlen = (len > (winsize - curpos)) ?
- (winsize - curpos) : len;
- /* Relocate window and copy block of data */
- err = sdla_mapmem(hw, curvec);
- peek_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
- curlen);
- addr += curlen;
- buf = (char*)buf + curlen;
- len -= curlen;
- }
-
- /* Restore DPM window position */
- sdla_mapmem(hw, oldvec);
- return err;
- }
-}
-
-
-/*============================================================================
- * Read data from adapter's memory to a data buffer in 4-byte chunks.
- * Note that we ensure that the SDLA memory address is on a 4-byte boundary
- * before we begin moving the data in 4-byte chunks.
-*/
-
-static void peek_by_4 (unsigned long src, void* buf, unsigned len)
-{
-
- /* byte copy data until we get to a 4-byte boundary */
- while (len && (src & 0x03)) {
- *(char *)buf ++ = readb(src ++);
- len --;
- }
-
- /* copy data in 4-byte chunks */
- while (len >= 4) {
- *(unsigned long *)buf = readl(src);
- buf += 4;
- src += 4;
- len -= 4;
- }
-
- /* byte copy any remaining data */
- while (len) {
- *(char *)buf ++ = readb(src ++);
- len --;
- }
-}
-
-
-/*============================================================================
- * Write Absolute Adapter Memory.
- * Transfer data from data buffer to adapter's memory.
- *
- * Note:
- * Care should be taken when crossing dual-port memory window boundary.
- * This function is not atomic, so caller must disable interrupt if
- * interrupt routines are accessing adapter shared memory.
- */
-
-EXPORT_SYMBOL(sdla_poke);
-
-int sdla_poke (sdlahw_t* hw, unsigned long addr, void* buf, unsigned len)
-{
-
- if (addr + len > hw->memory) /* verify arguments */
- return -EINVAL;
-
- if(hw->type == SDLA_S514) { /* copy data for the S514 adapter */
- poke_by_4 ((unsigned long)hw->dpmbase + addr, buf, len);
- return 0;
- }
-
- else { /* copy data for the S508 adapter */
- unsigned long oldvec = hw->vector;
- unsigned winsize = hw->dpmsize;
- unsigned curpos, curlen; /* current offset and block size */
- unsigned long curvec; /* current DPM window vector */
- int err = 0;
-
- while (len && !err) {
- curpos = addr % winsize; /* current window offset */
- curvec = addr - curpos; /* current window vector */
- curlen = (len > (winsize - curpos)) ?
- (winsize - curpos) : len;
- /* Relocate window and copy block of data */
- sdla_mapmem(hw, curvec);
- poke_by_4 ((unsigned long)hw->dpmbase + curpos, buf,
- curlen);
- addr += curlen;
- buf = (char*)buf + curlen;
- len -= curlen;
- }
-
- /* Restore DPM window position */
- sdla_mapmem(hw, oldvec);
- return err;
- }
-}
-
-
-/*============================================================================
- * Write from a data buffer to adapter's memory in 4-byte chunks.
- * Note that we ensure that the SDLA memory address is on a 4-byte boundary
- * before we begin moving the data in 4-byte chunks.
-*/
-
-static void poke_by_4 (unsigned long dest, void* buf, unsigned len)
-{
-
- /* byte copy data until we get to a 4-byte boundary */
- while (len && (dest & 0x03)) {
- writeb (*(char *)buf ++, dest ++);
- len --;
- }
-
- /* copy data in 4-byte chunks */
- while (len >= 4) {
- writel (*(unsigned long *)buf, dest);
- dest += 4;
- buf += 4;
- len -= 4;
- }
-
- /* byte copy any remaining data */
- while (len) {
- writeb (*(char *)buf ++ , dest ++);
- len --;
- }
-}
-
-
-#ifdef DONT_COMPIPLE_THIS
-#endif /* DONT_COMPIPLE_THIS */
-
-/****** Hardware-Specific Functions *****************************************/
-
-/*============================================================================
- * Detect adapter type.
- * o if adapter type is specified then call detection routine for that adapter
- * type. Otherwise call detection routines for every adapter types until
- * adapter is detected.
- *
- * Notes:
- * 1) Detection tests are destructive! Adapter will be left in shutdown state
- * after the test.
- */
-static int sdla_detect (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int err = 0;
-
- if (!port && (hw->type != SDLA_S514))
- return -EFAULT;
-
- switch (hw->type) {
- case SDLA_S502A:
- if (!detect_s502a(port)) err = -ENODEV;
- break;
-
- case SDLA_S502E:
- if (!detect_s502e(port)) err = -ENODEV;
- break;
-
- case SDLA_S503:
- if (!detect_s503(port)) err = -ENODEV;
- break;
-
- case SDLA_S507:
- if (!detect_s507(port)) err = -ENODEV;
- break;
-
- case SDLA_S508:
- if (!detect_s508(port)) err = -ENODEV;
- break;
-
- case SDLA_S514:
- if (!detect_s514(hw)) err = -ENODEV;
- break;
-
- default:
- if (detect_s502a(port))
- hw->type = SDLA_S502A;
- else if (detect_s502e(port))
- hw->type = SDLA_S502E;
- else if (detect_s503(port))
- hw->type = SDLA_S503;
- else if (detect_s507(port))
- hw->type = SDLA_S507;
- else if (detect_s508(port))
- hw->type = SDLA_S508;
- else err = -ENODEV;
- }
- return err;
-}
-
-/*============================================================================
- * Autoselect memory region.
- * o try all available DMP address options from the top down until success.
- */
-static int sdla_autodpm (sdlahw_t* hw)
-{
- int i, err = -EINVAL;
- unsigned* opt;
-
- switch (hw->type) {
- case SDLA_S502A:
- opt = s502a_dpmbase_options;
- break;
-
- case SDLA_S502E:
- case SDLA_S503:
- case SDLA_S508:
- opt = s508_dpmbase_options;
- break;
-
- case SDLA_S507:
- opt = s507_dpmbase_options;
- break;
-
- default:
- return -EINVAL;
- }
-
- /* Start testing from 8th position, address
- * 0xC8000 from the 508 address table.
- * We don't want to test A**** addresses, since
- * they are usually used for Video */
- for (i = 8; i <= opt[0] && err; i++) {
- hw->dpmbase = phys_to_virt(opt[i]);
- err = sdla_setdpm(hw);
- }
- return err;
-}
-
-/*============================================================================
- * Set up adapter dual-port memory window.
- * o shut down adapter
- * o make sure that no physical memory exists in this region, i.e entire
- * region reads 0xFF and is not writable when adapter is shut down.
- * o initialize adapter hardware
- * o make sure that region is usable with SDLA card, i.e. we can write to it
- * when adapter is configured.
- */
-static int sdla_setdpm (sdlahw_t* hw)
-{
- int err;
-
- /* Shut down card and verify memory region */
- sdla_down(hw);
- if (check_memregion(hw->dpmbase, hw->dpmsize))
- return -EINVAL;
-
- /* Initialize adapter and test on-board memory segment by segment.
- * If memory size appears to be less than shared memory window size,
- * assume that memory region is unusable.
- */
- err = sdla_init(hw);
- if (err) return err;
-
- if (sdla_memtest(hw) < hw->dpmsize) { /* less than window size */
- sdla_down(hw);
- return -EIO;
- }
- sdla_mapmem(hw, 0L); /* set window vector at bottom */
- return 0;
-}
-
-/*============================================================================
- * Load adapter from the memory image of the SDLA firmware module.
- * o verify firmware integrity and compatibility
- * o start adapter up
- */
-static int sdla_load (sdlahw_t* hw, sfm_t* sfm, unsigned len)
-{
-
- int i;
-
- /* Verify firmware signature */
- if (strcmp(sfm->signature, SFM_SIGNATURE)) {
- printk(KERN_INFO "%s: not SDLA firmware!\n",
- modname);
- return -EINVAL;
- }
-
- /* Verify firmware module format version */
- if (sfm->version != SFM_VERSION) {
- printk(KERN_INFO
- "%s: firmware format %u rejected! Expecting %u.\n",
- modname, sfm->version, SFM_VERSION);
- return -EINVAL;
- }
-
- /* Verify firmware module length and checksum */
- if ((len - offsetof(sfm_t, image) != sfm->info.codesize) ||
- (checksum((void*)&sfm->info,
- sizeof(sfm_info_t) + sfm->info.codesize) != sfm->checksum)) {
- printk(KERN_INFO "%s: firmware corrupted!\n", modname);
- return -EINVAL;
- }
-
- /* Announce */
- printk(KERN_INFO "%s: loading %s (ID=%u)...\n", modname,
- (sfm->descr[0] != '\0') ? sfm->descr : "unknown firmware",
- sfm->info.codeid);
-
- if(hw->type == SDLA_S514)
- printk(KERN_INFO "%s: loading S514 adapter, CPU %c\n",
- modname, hw->S514_cpu_no[0]);
-
- /* Scan through the list of compatible adapters and make sure our
- * adapter type is listed.
- */
- for (i = 0;
- (i < SFM_MAX_SDLA) && (sfm->info.adapter[i] != hw->type);
- ++i);
-
- if (i == SFM_MAX_SDLA) {
- printk(KERN_INFO "%s: firmware is not compatible with S%u!\n",
- modname, hw->type);
- return -EINVAL;
- }
-
-
- /* Make sure there is enough on-board memory */
- if (hw->memory < sfm->info.memsize) {
- printk(KERN_INFO
- "%s: firmware needs %lu bytes of on-board memory!\n",
- modname, sfm->info.memsize);
- return -EINVAL;
- }
-
- /* Move code onto adapter */
- if (sdla_poke(hw, sfm->info.codeoffs, sfm->image, sfm->info.codesize)) {
- printk(KERN_INFO "%s: failed to load code segment!\n",
- modname);
- return -EIO;
- }
-
- /* Prepare boot-time configuration data and kick-off CPU */
- sdla_bootcfg(hw, &sfm->info);
- if (sdla_start(hw, sfm->info.startoffs)) {
- printk(KERN_INFO "%s: Damn... Adapter won't start!\n",
- modname);
- return -EIO;
- }
-
- /* position DPM window over the mailbox and enable interrupts */
- if (sdla_mapmem(hw, sfm->info.winoffs) || sdla_inten(hw)) {
- printk(KERN_INFO "%s: adapter hardware failure!\n",
- modname);
- return -EIO;
- }
- hw->fwid = sfm->info.codeid; /* set firmware ID */
- return 0;
-}
-
-/*============================================================================
- * Initialize SDLA hardware: setup memory window, IRQ, etc.
- */
-static int sdla_init (sdlahw_t* hw)
-{
- int i;
-
- for (i = 0; i < SDLA_MAXIORANGE; ++i)
- hw->regs[i] = 0;
-
- switch (hw->type) {
- case SDLA_S502A: return init_s502a(hw);
- case SDLA_S502E: return init_s502e(hw);
- case SDLA_S503: return init_s503(hw);
- case SDLA_S507: return init_s507(hw);
- case SDLA_S508: return init_s508(hw);
- }
- return -EINVAL;
-}
-
-/*============================================================================
- * Test adapter on-board memory.
- * o slide DPM window from the bottom up and test adapter memory segment by
- * segment.
- * Return adapter memory size.
- */
-static unsigned long sdla_memtest (sdlahw_t* hw)
-{
- unsigned long memsize;
- unsigned winsize;
-
- for (memsize = 0, winsize = hw->dpmsize;
- !sdla_mapmem(hw, memsize) &&
- (test_memregion(hw->dpmbase, winsize) == winsize)
- ;
- memsize += winsize)
- ;
- hw->memory = memsize;
- return memsize;
-}
-
-/*============================================================================
- * Prepare boot-time firmware configuration data.
- * o position DPM window
- * o initialize configuration data area
- */
-static int sdla_bootcfg (sdlahw_t* hw, sfm_info_t* sfminfo)
-{
- unsigned char* data;
-
- if (!sfminfo->datasize) return 0; /* nothing to do */
-
- if (sdla_mapmem(hw, sfminfo->dataoffs) != 0)
- return -EIO;
-
- if(hw->type == SDLA_S514)
- data = (void*)(hw->dpmbase + sfminfo->dataoffs);
- else
- data = (void*)((u8 *)hw->dpmbase +
- (sfminfo->dataoffs - hw->vector));
-
- memset_io (data, 0, sfminfo->datasize);
-
- writeb (make_config_byte(hw), &data[0x00]);
-
- switch (sfminfo->codeid) {
- case SFID_X25_502:
- case SFID_X25_508:
- writeb (3, &data[0x01]); /* T1 timer */
- writeb (10, &data[0x03]); /* N2 */
- writeb (7, &data[0x06]); /* HDLC window size */
- writeb (1, &data[0x0B]); /* DTE */
- writeb (2, &data[0x0C]); /* X.25 packet window size */
- writew (128, &data[0x0D]); /* default X.25 data size */
- writew (128, &data[0x0F]); /* maximum X.25 data size */
- break;
- }
- return 0;
-}
-
-/*============================================================================
- * Prepare configuration byte identifying adapter type and CPU clock rate.
- */
-static unsigned char make_config_byte (sdlahw_t* hw)
-{
- unsigned char byte = 0;
-
- switch (hw->pclk) {
- case 5000: byte = 0x01; break;
- case 7200: byte = 0x02; break;
- case 8000: byte = 0x03; break;
- case 10000: byte = 0x04; break;
- case 16000: byte = 0x05; break;
- }
-
- switch (hw->type) {
- case SDLA_S502E: byte |= 0x80; break;
- case SDLA_S503: byte |= 0x40; break;
- }
- return byte;
-}
-
-/*============================================================================
- * Start adapter's CPU.
- * o calculate a pointer to adapter's cold boot entry point
- * o position DPM window
- * o place boot instruction (jp addr) at cold boot entry point
- * o start CPU
- */
-static int sdla_start (sdlahw_t* hw, unsigned addr)
-{
- unsigned port = hw->port;
- unsigned char *bootp;
- int err, tmp, i;
-
- if (!port && (hw->type != SDLA_S514)) return -EFAULT;
-
- switch (hw->type) {
- case SDLA_S502A:
- bootp = hw->dpmbase;
- bootp += 0x66;
- break;
-
- case SDLA_S502E:
- case SDLA_S503:
- case SDLA_S507:
- case SDLA_S508:
- case SDLA_S514:
- bootp = hw->dpmbase;
- break;
-
- default:
- return -EINVAL;
- }
-
- err = sdla_mapmem(hw, 0);
- if (err) return err;
-
- writeb (0xC3, bootp); /* Z80: 'jp' opcode */
- bootp ++;
- writew (addr, bootp);
-
- switch (hw->type) {
- case SDLA_S502A:
- _OUTB(port, 0x10); /* issue NMI to CPU */
- hw->regs[0] = 0x10;
- break;
-
- case SDLA_S502E:
- _OUTB(port + 3, 0x01); /* start CPU */
- hw->regs[3] = 0x01;
- for (i = 0; i < SDLA_IODELAY; ++i);
- if (_INB(port) & 0x01) { /* verify */
- /*
- * Enabling CPU changes functionality of the
- * control register, so we have to reset its
- * mirror.
- */
- _OUTB(port, 0); /* disable interrupts */
- hw->regs[0] = 0;
- }
- else return -EIO;
- break;
-
- case SDLA_S503:
- tmp = hw->regs[0] | 0x09; /* set bits 0 and 3 */
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i);
- if (!(_INB(port) & 0x01)) /* verify */
- return -EIO;
- break;
-
- case SDLA_S507:
- tmp = hw->regs[0] | 0x02;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i);
- if (!(_INB(port) & 0x04)) /* verify */
- return -EIO;
- break;
-
- case SDLA_S508:
- tmp = hw->regs[0] | 0x02;
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i);
- if (!(_INB(port + 1) & 0x02)) /* verify */
- return -EIO;
- break;
-
- case SDLA_S514:
- writeb (S514_CPU_START, hw->vector);
- break;
-
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-/*============================================================================
- * Initialize S502A adapter.
- */
-static int init_s502a (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- if (!detect_s502a(port))
- return -ENODEV;
-
- hw->regs[0] = 0x08;
- hw->regs[1] = 0xFF;
-
- /* Verify configuration options */
- i = get_option_index(s502a_dpmbase_options, virt_to_phys(hw->dpmbase));
- if (i == 0)
- return -EINVAL;
-
- tmp = s502a_hmcr[i - 1];
- switch (hw->dpmsize) {
- case 0x2000:
- tmp |= 0x01;
- break;
-
- case 0x10000L:
- break;
-
- default:
- return -EINVAL;
- }
-
- /* Setup dual-port memory window (this also enables memory access) */
- _OUTB(port + 1, tmp);
- hw->regs[1] = tmp;
- hw->regs[0] = 0x08;
- return 0;
-}
-
-/*============================================================================
- * Initialize S502E adapter.
- */
-static int init_s502e (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- if (!detect_s502e(port))
- return -ENODEV;
-
- /* Verify configuration options */
- i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
- if (i == 0)
- return -EINVAL;
-
- tmp = s502e_hmcr[i - 1];
- switch (hw->dpmsize) {
- case 0x2000:
- tmp |= 0x01;
- break;
-
- case 0x10000L:
- break;
-
- default:
- return -EINVAL;
- }
-
- /* Setup dual-port memory window */
- _OUTB(port + 1, tmp);
- hw->regs[1] = tmp;
-
- /* Enable memory access */
- _OUTB(port, 0x02);
- hw->regs[0] = 0x02;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- return (_INB(port) & 0x02) ? 0 : -EIO;
-}
-
-/*============================================================================
- * Initialize S503 adapter.
- * ---------------------------------------------------------------------------
- */
-static int init_s503 (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- if (!detect_s503(port))
- return -ENODEV;
-
- /* Verify configuration options */
- i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
- if (i == 0)
- return -EINVAL;
-
- tmp = s502e_hmcr[i - 1];
- switch (hw->dpmsize) {
- case 0x2000:
- tmp |= 0x01;
- break;
-
- case 0x10000L:
- break;
-
- default:
- return -EINVAL;
- }
-
- /* Setup dual-port memory window */
- _OUTB(port + 1, tmp);
- hw->regs[1] = tmp;
-
- /* Enable memory access */
- _OUTB(port, 0x02);
- hw->regs[0] = 0x02; /* update mirror */
- return 0;
-}
-
-/*============================================================================
- * Initialize S507 adapter.
- */
-static int init_s507 (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- if (!detect_s507(port))
- return -ENODEV;
-
- /* Verify configuration options */
- i = get_option_index(s507_dpmbase_options, virt_to_phys(hw->dpmbase));
- if (i == 0)
- return -EINVAL;
-
- tmp = s507_hmcr[i - 1];
- switch (hw->dpmsize) {
- case 0x2000:
- tmp |= 0x01;
- break;
-
- case 0x10000L:
- break;
-
- default:
- return -EINVAL;
- }
-
- /* Enable adapter's logic */
- _OUTB(port, 0x01);
- hw->regs[0] = 0x01;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (!(_INB(port) & 0x20))
- return -EIO;
-
- /* Setup dual-port memory window */
- _OUTB(port + 1, tmp);
- hw->regs[1] = tmp;
-
- /* Enable memory access */
- tmp = hw->regs[0] | 0x04;
- if (hw->irq) {
- i = get_option_index(s508_irq_options, hw->irq);
- if (i) tmp |= s507_irqmask[i - 1];
- }
- _OUTB(port, tmp);
- hw->regs[0] = tmp; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- return (_INB(port) & 0x08) ? 0 : -EIO;
-}
-
-/*============================================================================
- * Initialize S508 adapter.
- */
-static int init_s508 (sdlahw_t* hw)
-{
- unsigned port = hw->port;
- int tmp, i;
-
- if (!detect_s508(port))
- return -ENODEV;
-
- /* Verify configuration options */
- i = get_option_index(s508_dpmbase_options, virt_to_phys(hw->dpmbase));
- if (i == 0)
- return -EINVAL;
-
- /* Setup memory configuration */
- tmp = s508_hmcr[i - 1];
- _OUTB(port + 1, tmp);
- hw->regs[1] = tmp;
-
- /* Enable memory access */
- _OUTB(port, 0x04);
- hw->regs[0] = 0x04; /* update mirror */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- return (_INB(port + 1) & 0x04) ? 0 : -EIO;
-}
-
-/*============================================================================
- * Detect S502A adapter.
- * Following tests are used to detect S502A adapter:
- * 1. All registers other than status (BASE) should read 0xFF
- * 2. After writing 00001000b to control register, status register should
- * read 01000000b.
- * 3. After writing 0 to control register, status register should still
- * read 01000000b.
- * 4. After writing 00000100b to control register, status register should
- * read 01000100b.
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s502a (int port)
-{
- int i, j;
-
- if (!get_option_index(s502_port_options, port))
- return 0;
-
- for (j = 1; j < SDLA_MAXIORANGE; ++j) {
- if (_INB(port + j) != 0xFF)
- return 0;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- }
-
- _OUTB(port, 0x08); /* halt CPU */
- _OUTB(port, 0x08);
- _OUTB(port, 0x08);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0x40)
- return 0;
- _OUTB(port, 0x00);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0x40)
- return 0;
- _OUTB(port, 0x04);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0x44)
- return 0;
-
- /* Reset adapter */
- _OUTB(port, 0x08);
- _OUTB(port, 0x08);
- _OUTB(port, 0x08);
- _OUTB(port + 1, 0xFF);
- return 1;
-}
-
-/*============================================================================
- * Detect S502E adapter.
- * Following tests are used to verify adapter presence:
- * 1. All registers other than status (BASE) should read 0xFF.
- * 2. After writing 0 to CPU control register (BASE+3), status register
- * (BASE) should read 11111000b.
- * 3. After writing 00000100b to port BASE (set bit 2), status register
- * (BASE) should read 11111100b.
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s502e (int port)
-{
- int i, j;
-
- if (!get_option_index(s502_port_options, port))
- return 0;
- for (j = 1; j < SDLA_MAXIORANGE; ++j) {
- if (_INB(port + j) != 0xFF)
- return 0;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- }
-
- _OUTB(port + 3, 0); /* CPU control reg. */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0xF8) /* read status */
- return 0;
- _OUTB(port, 0x04); /* set bit 2 */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0xFC) /* verify */
- return 0;
-
- /* Reset adapter */
- _OUTB(port, 0);
- return 1;
-}
-
-/*============================================================================
- * Detect s503 adapter.
- * Following tests are used to verify adapter presence:
- * 1. All registers other than status (BASE) should read 0xFF.
- * 2. After writing 0 to control register (BASE), status register (BASE)
- * should read 11110000b.
- * 3. After writing 00000100b (set bit 2) to control register (BASE),
- * status register should read 11110010b.
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s503 (int port)
-{
- int i, j;
-
- if (!get_option_index(s503_port_options, port))
- return 0;
- for (j = 1; j < SDLA_MAXIORANGE; ++j) {
- if (_INB(port + j) != 0xFF)
- return 0;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- }
-
- _OUTB(port, 0); /* reset control reg.*/
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0xF0) /* read status */
- return 0;
- _OUTB(port, 0x04); /* set bit 2 */
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if (_INB(port) != 0xF2) /* verify */
- return 0;
-
- /* Reset adapter */
- _OUTB(port, 0);
- return 1;
-}
-
-/*============================================================================
- * Detect s507 adapter.
- * Following tests are used to detect s507 adapter:
- * 1. All ports should read the same value.
- * 2. After writing 0x00 to control register, status register should read
- * ?011000?b.
- * 3. After writing 0x01 to control register, status register should read
- * ?011001?b.
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s507 (int port)
-{
- int tmp, i, j;
-
- if (!get_option_index(s508_port_options, port))
- return 0;
- tmp = _INB(port);
- for (j = 1; j < S507_IORANGE; ++j) {
- if (_INB(port + j) != tmp)
- return 0;
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- }
-
- _OUTB(port, 0x00);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if ((_INB(port) & 0x7E) != 0x30)
- return 0;
- _OUTB(port, 0x01);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if ((_INB(port) & 0x7E) != 0x32)
- return 0;
-
- /* Reset adapter */
- _OUTB(port, 0x00);
- return 1;
-}
-
-/*============================================================================
- * Detect s508 adapter.
- * Following tests are used to detect s508 adapter:
- * 1. After writing 0x00 to control register, status register should read
- * ??000000b.
- * 2. After writing 0x10 to control register, status register should read
- * ??010000b
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s508 (int port)
-{
- int i;
-
- if (!get_option_index(s508_port_options, port))
- return 0;
- _OUTB(port, 0x00);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if ((_INB(port + 1) & 0x3F) != 0x00)
- return 0;
- _OUTB(port, 0x10);
- for (i = 0; i < SDLA_IODELAY; ++i); /* delay */
- if ((_INB(port + 1) & 0x3F) != 0x10)
- return 0;
-
- /* Reset adapter */
- _OUTB(port, 0x00);
- return 1;
-}
-
-/*============================================================================
- * Detect s514 PCI adapter.
- * Return 1 if detected o.k. or 0 if failed.
- * Note: This test is destructive! Adapter will be left in shutdown
- * state after the test.
- */
-static int detect_s514 (sdlahw_t* hw)
-{
- unsigned char CPU_no, slot_no, auto_slot_cfg;
- int number_S514_cards = 0;
- u32 S514_mem_base_addr = 0;
- u32 ut_u32;
- struct pci_dev *pci_dev;
-
-
-#ifndef CONFIG_PCI
- printk(KERN_INFO "%s: Linux not compiled for PCI usage!\n", modname);
- return 0;
-#endif
-
- /*
- The 'setup()' procedure in 'sdlamain.c' passes the CPU number and the
- slot number defined in 'router.conf' via the 'port' definition.
- */
- CPU_no = hw->S514_cpu_no[0];
- slot_no = hw->S514_slot_no;
- auto_slot_cfg = hw->auto_pci_cfg;
-
- if (auto_slot_cfg){
- printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot=Auto\n",
- modname, CPU_no);
-
- }else{
- printk(KERN_INFO "%s: srch... S514 card, CPU %c, Slot #%d\n",
- modname, CPU_no, slot_no);
- }
-
- /* check to see that CPU A or B has been selected in 'router.conf' */
- switch(CPU_no) {
- case S514_CPU_A:
- case S514_CPU_B:
- break;
-
- default:
- printk(KERN_INFO "%s: S514 CPU definition invalid.\n",
- modname);
- printk(KERN_INFO "Must be 'A' or 'B'\n");
- return 0;
- }
-
- number_S514_cards = find_s514_adapter(hw, 0);
- if(!number_S514_cards)
- return 0;
-
- /* we are using a single S514 adapter with a slot of 0 so re-read the */
- /* location of this adapter */
- if((number_S514_cards == 1) && auto_slot_cfg) {
- number_S514_cards = find_s514_adapter(hw, 1);
- if(!number_S514_cards) {
- printk(KERN_INFO "%s: Error finding PCI card\n",
- modname);
- return 0;
- }
- }
-
- pci_dev = hw->pci_dev;
- /* read the physical memory base address */
- S514_mem_base_addr = (CPU_no == S514_CPU_A) ?
- (pci_dev->resource[1].start) :
- (pci_dev->resource[2].start);
-
- printk(KERN_INFO "%s: S514 PCI memory at 0x%X\n",
- modname, S514_mem_base_addr);
- if(!S514_mem_base_addr) {
- if(CPU_no == S514_CPU_B)
- printk(KERN_INFO "%s: CPU #B not present on the card\n", modname);
- else
- printk(KERN_INFO "%s: No PCI memory allocated to card\n", modname);
- return 0;
- }
-
- /* enable the PCI memory */
- pci_read_config_dword(pci_dev,
- (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
- &ut_u32);
- pci_write_config_dword(pci_dev,
- (CPU_no == S514_CPU_A) ? PCI_MAP0_DWORD : PCI_MAP1_DWORD,
- (ut_u32 | PCI_MEMORY_ENABLE));
-
- /* check the IRQ allocated and enable IRQ usage */
- if(!(hw->irq = pci_dev->irq)) {
- printk(KERN_INFO "%s: IRQ not allocated to S514 adapter\n",
- modname);
- return 0;
- }
-
- /* BUG FIX : Mar 6 2000
- * On a initial loading of the card, we must check
- * and clear PCI interrupt bits, due to a reset
- * problem on some other boards. i.e. An interrupt
- * might be pending, even after system bootup,
- * in which case, when starting wanrouter the machine
- * would crash.
- */
- if (init_pci_slot(hw))
- return 0;
-
- pci_read_config_dword(pci_dev, PCI_INT_CONFIG, &ut_u32);
- ut_u32 |= (CPU_no == S514_CPU_A) ?
- PCI_ENABLE_IRQ_CPU_A : PCI_ENABLE_IRQ_CPU_B;
- pci_write_config_dword(pci_dev, PCI_INT_CONFIG, ut_u32);
-
- printk(KERN_INFO "%s: IRQ %d allocated to the S514 card\n",
- modname, hw->irq);
-
- /* map the physical PCI memory to virtual memory */
- hw->dpmbase = ioremap((unsigned long)S514_mem_base_addr,
- (unsigned long)MAX_SIZEOF_S514_MEMORY);
- /* map the physical control register memory to virtual memory */
- hw->vector = (unsigned long)ioremap(
- (unsigned long)(S514_mem_base_addr + S514_CTRL_REG_BYTE),
- (unsigned long)16);
-
- if(!hw->dpmbase || !hw->vector) {
- printk(KERN_INFO "%s: PCI virtual memory allocation failed\n",
- modname);
- return 0;
- }
-
- /* halt the adapter */
- writeb (S514_CPU_HALT, hw->vector);
-
- return 1;
-}
-
-/*============================================================================
- * Find the S514 PCI adapter in the PCI bus.
- * Return the number of S514 adapters found (0 if no adapter found).
- */
-static int find_s514_adapter(sdlahw_t* hw, char find_first_S514_card)
-{
- unsigned char slot_no;
- int number_S514_cards = 0;
- char S514_found_in_slot = 0;
- u16 PCI_subsys_vendor;
-
- struct pci_dev *pci_dev = NULL;
-
- slot_no = hw->S514_slot_no;
-
- while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
- != NULL) {
-
- pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
- &PCI_subsys_vendor);
-
- if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
- continue;
-
- hw->pci_dev = pci_dev;
-
- if(find_first_S514_card)
- return(1);
-
- number_S514_cards ++;
-
- printk(KERN_INFO
- "%s: S514 card found, slot #%d (devfn 0x%X)\n",
- modname, ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
- pci_dev->devfn);
-
- if (hw->auto_pci_cfg){
- hw->S514_slot_no = ((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK);
- slot_no = hw->S514_slot_no;
-
- }else if (((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK) == slot_no){
- S514_found_in_slot = 1;
- break;
- }
- }
-
- /* if no S514 adapter has been found, then exit */
- if (!number_S514_cards) {
- printk(KERN_INFO "%s: Error, no S514 adapters found\n", modname);
- return 0;
- }
- /* if more than one S514 card has been found, then the user must have */ /* defined a slot number so that the correct adapter is used */
- else if ((number_S514_cards > 1) && hw->auto_pci_cfg) {
- printk(KERN_INFO "%s: Error, PCI Slot autodetect Failed! \n"
- "%s: More than one S514 adapter found.\n"
- "%s: Disable the Autodetect feature and supply\n"
- "%s: the PCISLOT numbers for each card.\n",
- modname,modname,modname,modname);
- return 0;
- }
- /* if the user has specified a slot number and the S514 adapter has */
- /* not been found in that slot, then exit */
- else if (!hw->auto_pci_cfg && !S514_found_in_slot) {
- printk(KERN_INFO
- "%s: Error, S514 card not found in specified slot #%d\n",
- modname, slot_no);
- return 0;
- }
-
- return (number_S514_cards);
-}
-
-
-
-/******* Miscellaneous ******************************************************/
-
-/*============================================================================
- * Calibrate SDLA memory access delay.
- * Count number of idle loops made within 1 second and then calculate the
- * number of loops that should be made to achive desired delay.
- */
-static int calibrate_delay (int mks)
-{
- unsigned int delay;
- unsigned long stop;
-
- for (delay = 0, stop = SYSTEM_TICK + HZ; SYSTEM_TICK < stop; ++delay);
- return (delay/(1000000L/mks) + 1);
-}
-
-/*============================================================================
- * Get option's index into the options list.
- * Return option's index (1 .. N) or zero if option is invalid.
- */
-static int get_option_index (unsigned* optlist, unsigned optval)
-{
- int i;
-
- for (i = 1; i <= optlist[0]; ++i)
- if ( optlist[i] == optval)
- return i;
- return 0;
-}
-
-/*============================================================================
- * Check memory region to see if it's available.
- * Return: 0 ok.
- */
-static unsigned check_memregion (void* ptr, unsigned len)
-{
- volatile unsigned char* p = ptr;
-
- for (; len && (readb (p) == 0xFF); --len, ++p) {
- writeb (0, p); /* attempt to write 0 */
- if (readb(p) != 0xFF) { /* still has to read 0xFF */
- writeb (0xFF, p);/* restore original value */
- break; /* not good */
- }
- }
-
- return len;
-}
-
-/*============================================================================
- * Test memory region.
- * Return: size of the region that passed the test.
- * Note: Region size must be multiple of 2 !
- */
-static unsigned test_memregion (void* ptr, unsigned len)
-{
- volatile unsigned short* w_ptr;
- unsigned len_w = len >> 1; /* region len in words */
- unsigned i;
-
- for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
- writew (0xAA55, w_ptr);
-
- for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
- if (readw (w_ptr) != 0xAA55) {
- len_w = i;
- break;
- }
-
- for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
- writew (0x55AA, w_ptr);
-
- for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
- if (readw(w_ptr) != 0x55AA) {
- len_w = i;
- break;
- }
-
- for (i = 0, w_ptr = ptr; i < len_w; ++i, ++w_ptr)
- writew (0, w_ptr);
-
- return len_w << 1;
-}
-
-/*============================================================================
- * Calculate 16-bit CRC using CCITT polynomial.
- */
-static unsigned short checksum (unsigned char* buf, unsigned len)
-{
- unsigned short crc = 0;
- unsigned mask, flag;
-
- for (; len; --len, ++buf) {
- for (mask = 0x80; mask; mask >>= 1) {
- flag = (crc & 0x8000);
- crc <<= 1;
- crc |= ((*buf & mask) ? 1 : 0);
- if (flag) crc ^= 0x1021;
- }
- }
- return crc;
-}
-
-static int init_pci_slot(sdlahw_t *hw)
-{
-
- u32 int_status;
- int volatile found=0;
- int i=0;
-
- /* Check if this is a very first load for a specific
- * pci card. If it is, clear the interrput bits, and
- * set the flag indicating that this card was initialized.
- */
-
- for (i=0; (i<MAX_S514_CARDS) && !found; i++){
- if (pci_slot_ar[i] == hw->S514_slot_no){
- found=1;
- break;
- }
- if (pci_slot_ar[i] == 0xFF){
- break;
- }
- }
-
- if (!found){
- read_S514_int_stat(hw,&int_status);
- S514_intack(hw,int_status);
- if (i == MAX_S514_CARDS){
- printk(KERN_INFO "%s: Critical Error !!!\n",modname);
- printk(KERN_INFO
- "%s: Number of Sangoma PCI cards exceeded maximum limit.\n",
- modname);
- printk(KERN_INFO "Please contact Sangoma Technologies\n");
- return 1;
- }
- pci_slot_ar[i] = hw->S514_slot_no;
- }
- return 0;
-}
-
-static int pci_probe(sdlahw_t *hw)
-{
-
- unsigned char slot_no;
- int number_S514_cards = 0;
- u16 PCI_subsys_vendor;
- u16 PCI_card_type;
-
- struct pci_dev *pci_dev = NULL;
- struct pci_bus *bus = NULL;
-
- slot_no = 0;
-
- while ((pci_dev = pci_find_device(V3_VENDOR_ID, V3_DEVICE_ID, pci_dev))
- != NULL) {
-
- pci_read_config_word(pci_dev, PCI_SUBSYS_VENDOR_WORD,
- &PCI_subsys_vendor);
-
- if(PCI_subsys_vendor != SANGOMA_SUBSYS_VENDOR)
- continue;
-
- pci_read_config_word(pci_dev, PCI_CARD_TYPE,
- &PCI_card_type);
-
- bus = pci_dev->bus;
-
- /* A dual cpu card can support up to 4 physical connections,
- * where a single cpu card can support up to 2 physical
- * connections. The FT1 card can only support a single
- * connection, however we cannot distinguish between a Single
- * CPU card and an FT1 card. */
- if (PCI_card_type == S514_DUAL_CPU){
- number_S514_cards += 4;
- printk(KERN_INFO
- "wanpipe: S514-PCI card found, cpu(s) 2, bus #%d, slot #%d, irq #%d\n",
- bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
- pci_dev->irq);
- }else{
- number_S514_cards += 2;
- printk(KERN_INFO
- "wanpipe: S514-PCI card found, cpu(s) 1, bus #%d, slot #%d, irq #%d\n",
- bus->number,((pci_dev->devfn >> 3) & PCI_DEV_SLOT_MASK),
- pci_dev->irq);
- }
- }
-
- return number_S514_cards;
-
-}
-
-
-
-EXPORT_SYMBOL(wanpipe_hw_probe);
-
-unsigned wanpipe_hw_probe(void)
-{
- sdlahw_t hw;
- unsigned* opt = s508_port_options;
- unsigned cardno=0;
- int i;
-
- memset(&hw, 0, sizeof(hw));
-
- for (i = 1; i <= opt[0]; i++) {
- if (detect_s508(opt[i])){
- /* S508 card can support up to two physical links */
- cardno+=2;
- printk(KERN_INFO "wanpipe: S508-ISA card found, port 0x%x\n",opt[i]);
- }
- }
-
- #ifdef CONFIG_PCI
- hw.S514_slot_no = 0;
- cardno += pci_probe(&hw);
- #else
- printk(KERN_INFO "wanpipe: Warning, Kernel not compiled for PCI support!\n");
- printk(KERN_INFO "wanpipe: PCI Hardware Probe Failed!\n");
- #endif
-
- return cardno;
-}
-
-/****** End *****************************************************************/
diff --git a/drivers/net/wan/sdlamain.c b/drivers/net/wan/sdlamain.c
deleted file mode 100644
index 7a8b22a7ea3..00000000000
--- a/drivers/net/wan/sdlamain.c
+++ /dev/null
@@ -1,1346 +0,0 @@
-/****************************************************************************
-* sdlamain.c WANPIPE(tm) Multiprotocol WAN Link Driver. Main module.
-*
-* Author: Nenad Corbic <ncorbic@sangoma.com>
-* Gideon Hack
-*
-* Copyright: (c) 1995-2000 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Dec 22, 2000 Nenad Corbic Updated for 2.4.X kernels.
-* Removed the polling routine.
-* Nov 13, 2000 Nenad Corbic Added hw probing on module load and dynamic
-* device allocation.
-* Nov 7, 2000 Nenad Corbic Fixed the Multi-Port PPP for kernels
-* 2.2.16 and above.
-* Aug 2, 2000 Nenad Corbic Block the Multi-Port PPP from running on
-* kernels 2.2.16 or greater. The SyncPPP
-* has changed.
-* Jul 25, 2000 Nenad Corbic Updated the Piggiback support for MultPPPP.
-* Jul 13, 2000 Nenad Corbic Added Multi-PPP support.
-* Feb 02, 2000 Nenad Corbic Fixed up piggyback probing and selection.
-* Sep 23, 1999 Nenad Corbic Added support for SMP
-* Sep 13, 1999 Nenad Corbic Each port is treated as a separate device.
-* Jun 02, 1999 Gideon Hack Added support for the S514 adapter.
-* Updates for Linux 2.2.X kernels.
-* Sep 17, 1998 Jaspreet Singh Updated for 2.1.121+ kernel
-* Nov 28, 1997 Jaspreet Singh Changed DRV_RELEASE to 1
-* Nov 10, 1997 Jaspreet Singh Changed sti() to restore_flags();
-* Nov 06, 1997 Jaspreet Singh Changed DRV_VERSION to 4 and DRV_RELEASE to 0
-* Oct 20, 1997 Jaspreet Singh Modified sdla_isr routine so that card->in_isr
-* assignments are taken out and placed in the
-* sdla_ppp.c, sdla_fr.c and sdla_x25.c isr
-* routines. Took out 'wandev->tx_int_enabled' and
-* replaced it with 'wandev->enable_tx_int'.
-* May 29, 1997 Jaspreet Singh Flow Control Problem
-* added "wandev->tx_int_enabled=1" line in the
-* init module. This line initializes the flag for
-* preventing Interrupt disabled with device set to
-* busy
-* Jan 15, 1997 Gene Kozin Version 3.1.0
-* o added UDP management stuff
-* Jan 02, 1997 Gene Kozin Initial version.
-*****************************************************************************/
-
-#include <linux/config.h> /* OS configuration options */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/init.h>
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/module.h> /* support for loadable modules */
-#include <linux/ioport.h> /* request_region(), release_region() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/rcupdate.h>
-
-#include <linux/in.h>
-#include <asm/io.h> /* phys_to_virt() */
-#include <linux/pci.h>
-#include <linux/sdlapci.h>
-#include <linux/if_wanpipe_common.h>
-
-#include <asm/uaccess.h> /* kernel <-> user copy */
-#include <linux/inetdevice.h>
-
-#include <linux/ip.h>
-#include <net/route.h>
-
-#define KMEM_SAFETYZONE 8
-
-
-#ifndef CONFIG_WANPIPE_FR
- #define wpf_init(a,b) (-EPROTONOSUPPORT)
-#endif
-
-#ifndef CONFIG_WANPIPE_CHDLC
- #define wpc_init(a,b) (-EPROTONOSUPPORT)
-#endif
-
-#ifndef CONFIG_WANPIPE_X25
- #define wpx_init(a,b) (-EPROTONOSUPPORT)
-#endif
-
-#ifndef CONFIG_WANPIPE_PPP
- #define wpp_init(a,b) (-EPROTONOSUPPORT)
-#endif
-
-#ifndef CONFIG_WANPIPE_MULTPPP
- #define wsppp_init(a,b) (-EPROTONOSUPPORT)
-#endif
-
-
-/***********FOR DEBUGGING PURPOSES*********************************************
-static void * dbg_kmalloc(unsigned int size, int prio, int line) {
- int i = 0;
- void * v = kmalloc(size+sizeof(unsigned int)+2*KMEM_SAFETYZONE*8,prio);
- char * c1 = v;
- c1 += sizeof(unsigned int);
- *((unsigned int *)v) = size;
-
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- c1[0] = 'D'; c1[1] = 'E'; c1[2] = 'A'; c1[3] = 'D';
- c1[4] = 'B'; c1[5] = 'E'; c1[6] = 'E'; c1[7] = 'F';
- c1 += 8;
- }
- c1 += size;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- c1[0] = 'M'; c1[1] = 'U'; c1[2] = 'N'; c1[3] = 'G';
- c1[4] = 'W'; c1[5] = 'A'; c1[6] = 'L'; c1[7] = 'L';
- c1 += 8;
- }
- v = ((char *)v) + sizeof(unsigned int) + KMEM_SAFETYZONE*8;
- printk(KERN_INFO "line %d kmalloc(%d,%d) = %p\n",line,size,prio,v);
- return v;
-}
-static void dbg_kfree(void * v, int line) {
- unsigned int * sp = (unsigned int *)(((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8));
- unsigned int size = *sp;
- char * c1 = ((char *)v) - KMEM_SAFETYZONE*8;
- int i = 0;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- if ( c1[0] != 'D' || c1[1] != 'E' || c1[2] != 'A' || c1[3] != 'D'
- || c1[4] != 'B' || c1[5] != 'E' || c1[6] != 'E' || c1[7] != 'F') {
- printk(KERN_INFO "kmalloced block at %p has been corrupted (underrun)!\n",v);
- printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
- c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
- }
- c1 += 8;
- }
- c1 += size;
- for (i = 0; i < KMEM_SAFETYZONE; i++) {
- if ( c1[0] != 'M' || c1[1] != 'U' || c1[2] != 'N' || c1[3] != 'G'
- || c1[4] != 'W' || c1[5] != 'A' || c1[6] != 'L' || c1[7] != 'L'
- ) {
- printk(KERN_INFO "kmalloced block at %p has been corrupted (overrun):\n",v);
- printk(KERN_INFO " %4x: %2x %2x %2x %2x %2x %2x %2x %2x\n", i*8,
- c1[0],c1[1],c1[2],c1[3],c1[4],c1[5],c1[6],c1[7] );
- }
- c1 += 8;
- }
- printk(KERN_INFO "line %d kfree(%p)\n",line,v);
- v = ((char *)v) - (sizeof(unsigned int) + KMEM_SAFETYZONE*8);
- kfree(v);
-}
-
-#define kmalloc(x,y) dbg_kmalloc(x,y,__LINE__)
-#define kfree(x) dbg_kfree(x,__LINE__)
-******************************************************************************/
-
-
-
-/****** Defines & Macros ****************************************************/
-
-#ifdef _DEBUG_
-#define STATIC
-#else
-#define STATIC static
-#endif
-
-#define DRV_VERSION 5 /* version number */
-#define DRV_RELEASE 0 /* release (minor version) number */
-#define MAX_CARDS 16 /* max number of adapters */
-
-#ifndef CONFIG_WANPIPE_CARDS /* configurable option */
-#define CONFIG_WANPIPE_CARDS 1
-#endif
-
-#define CMD_OK 0 /* normal firmware return code */
-#define CMD_TIMEOUT 0xFF /* firmware command timed out */
-#define MAX_CMD_RETRY 10 /* max number of firmware retries */
-/****** Function Prototypes *************************************************/
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/* WAN link driver entry points */
-static int setup(struct wan_device* wandev, wandev_conf_t* conf);
-static int shutdown(struct wan_device* wandev);
-static int ioctl(struct wan_device* wandev, unsigned cmd, unsigned long arg);
-
-/* IOCTL handlers */
-static int ioctl_dump (sdla_t* card, sdla_dump_t* u_dump);
-static int ioctl_exec (sdla_t* card, sdla_exec_t* u_exec, int);
-
-/* Miscellaneous functions */
-STATIC irqreturn_t sdla_isr (int irq, void* dev_id, struct pt_regs *regs);
-static void release_hw (sdla_t *card);
-
-static int check_s508_conflicts (sdla_t* card,wandev_conf_t* conf, int*);
-static int check_s514_conflicts (sdla_t* card,wandev_conf_t* conf, int*);
-
-
-/****** Global Data **********************************************************
- * Note: All data must be explicitly initialized!!!
- */
-
-/* private data */
-static char drvname[] = "wanpipe";
-static char fullname[] = "WANPIPE(tm) Multiprotocol Driver";
-static char copyright[] = "(c) 1995-2000 Sangoma Technologies Inc.";
-static int ncards;
-static sdla_t* card_array; /* adapter data space */
-
-/* Wanpipe's own workqueue, used for all API's.
- * All protocol specific tasks will be inserted
- * into the "wanpipe_wq" workqueue.
-
- * The kernel workqueue mechanism will execute
- * all pending tasks in the "wanpipe_wq" workqueue.
- */
-
-struct workqueue_struct *wanpipe_wq;
-DECLARE_WORK(wanpipe_work, NULL, NULL);
-
-static int wanpipe_bh_critical;
-
-/******* Kernel Loadable Module Entry Points ********************************/
-
-/*============================================================================
- * Module 'insert' entry point.
- * o print announcement
- * o allocate adapter data space
- * o initialize static data
- * o register all cards with WAN router
- * o calibrate SDLA shared memory access delay.
- *
- * Return: 0 Ok
- * < 0 error.
- * Context: process
- */
-
-static int __init wanpipe_init(void)
-{
- int cnt, err = 0;
-
- printk(KERN_INFO "%s v%u.%u %s\n",
- fullname, DRV_VERSION, DRV_RELEASE, copyright);
-
- wanpipe_wq = create_workqueue("wanpipe_wq");
- if (!wanpipe_wq)
- return -ENOMEM;
-
- /* Probe for wanpipe cards and return the number found */
- printk(KERN_INFO "wanpipe: Probing for WANPIPE hardware.\n");
- ncards = wanpipe_hw_probe();
- if (ncards){
- printk(KERN_INFO "wanpipe: Allocating maximum %i devices: wanpipe%i - wanpipe%i.\n",ncards,1,ncards);
- }else{
- printk(KERN_INFO "wanpipe: No S514/S508 cards found, unloading modules!\n");
- destroy_workqueue(wanpipe_wq);
- return -ENODEV;
- }
-
- /* Verify number of cards and allocate adapter data space */
- card_array = kmalloc(sizeof(sdla_t) * ncards, GFP_KERNEL);
- if (card_array == NULL) {
- destroy_workqueue(wanpipe_wq);
- return -ENOMEM;
- }
-
- memset(card_array, 0, sizeof(sdla_t) * ncards);
-
- /* Register adapters with WAN router */
- for (cnt = 0; cnt < ncards; ++ cnt) {
- sdla_t* card = &card_array[cnt];
- struct wan_device* wandev = &card->wandev;
-
- card->next = NULL;
- sprintf(card->devname, "%s%d", drvname, cnt + 1);
- wandev->magic = ROUTER_MAGIC;
- wandev->name = card->devname;
- wandev->private = card;
- wandev->enable_tx_int = 0;
- wandev->setup = &setup;
- wandev->shutdown = &shutdown;
- wandev->ioctl = &ioctl;
- err = register_wan_device(wandev);
- if (err) {
- printk(KERN_INFO
- "%s: %s registration failed with error %d!\n",
- drvname, card->devname, err);
- break;
- }
- }
- if (cnt){
- ncards = cnt; /* adjust actual number of cards */
- }else {
- kfree(card_array);
- destroy_workqueue(wanpipe_wq);
- printk(KERN_INFO "IN Init Module: NO Cards registered\n");
- err = -ENODEV;
- }
-
- return err;
-}
-
-/*============================================================================
- * Module 'remove' entry point.
- * o unregister all adapters from the WAN router
- * o release all remaining system resources
- */
-static void __exit wanpipe_cleanup(void)
-{
- int i;
-
- if (!ncards)
- return;
-
- for (i = 0; i < ncards; ++i) {
- sdla_t* card = &card_array[i];
- unregister_wan_device(card->devname);
- }
- destroy_workqueue(wanpipe_wq);
- kfree(card_array);
-
- printk(KERN_INFO "\nwanpipe: WANPIPE Modules Unloaded.\n");
-}
-
-module_init(wanpipe_init);
-module_exit(wanpipe_cleanup);
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Setup/configure WAN link driver.
- * o check adapter state
- * o make sure firmware is present in configuration
- * o make sure I/O port and IRQ are specified
- * o make sure I/O region is available
- * o allocate interrupt vector
- * o setup SDLA hardware
- * o call appropriate routine to perform protocol-specific initialization
- * o mark I/O region as used
- * o if this is the first active card, then schedule background task
- *
- * This function is called when router handles ROUTER_SETUP IOCTL. The
- * configuration structure is in kernel memory (including extended data, if
- * any).
- */
-
-static int setup(struct wan_device* wandev, wandev_conf_t* conf)
-{
- sdla_t* card;
- int err = 0;
- int irq=0;
-
- /* Sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL) || (conf == NULL)){
- printk(KERN_INFO
- "%s: Failed Sdlamain Setup wandev %u, card %u, conf %u !\n",
- wandev->name,
- (unsigned int)wandev,(unsigned int)wandev->private,
- (unsigned int)conf);
- return -EFAULT;
- }
-
- printk(KERN_INFO "%s: Starting WAN Setup\n", wandev->name);
-
- card = wandev->private;
- if (wandev->state != WAN_UNCONFIGURED){
- printk(KERN_INFO "%s: failed sdlamain setup, busy!\n",
- wandev->name);
- return -EBUSY; /* already configured */
- }
-
- printk(KERN_INFO "\nProcessing WAN device %s...\n", wandev->name);
-
- /* Initialize the counters for each wandev
- * Used for counting number of times new_if and
- * del_if get called.
- */
- wandev->del_if_cnt = 0;
- wandev->new_if_cnt = 0;
- wandev->config_id = conf->config_id;
-
- if (!conf->data_size || (conf->data == NULL)) {
- printk(KERN_INFO
- "%s: firmware not found in configuration data!\n",
- wandev->name);
- return -EINVAL;
- }
-
- /* Check for resource conflicts and setup the
- * card for piggibacking if necessary */
- if(!conf->S514_CPU_no[0]) {
- if ((err=check_s508_conflicts(card,conf,&irq)) != 0){
- return err;
- }
- }else {
- if ((err=check_s514_conflicts(card,conf,&irq)) != 0){
- return err;
- }
- }
-
- /* If the current card has already been configured
- * or it's a piggyback card, do not try to allocate
- * resources.
- */
- if (!card->wandev.piggyback && !card->configured){
-
- /* Configure hardware, load firmware, etc. */
- memset(&card->hw, 0, sizeof(sdlahw_t));
-
- /* for an S514 adapter, pass the CPU number and the slot number read */
- /* from 'router.conf' to the 'sdla_setup()' function via the 'port' */
- /* parameter */
- if (conf->S514_CPU_no[0]){
-
- card->hw.S514_cpu_no[0] = conf->S514_CPU_no[0];
- card->hw.S514_slot_no = conf->PCI_slot_no;
- card->hw.auto_pci_cfg = conf->auto_pci_cfg;
-
- if (card->hw.auto_pci_cfg == WANOPT_YES){
- printk(KERN_INFO "%s: Setting CPU to %c and Slot to Auto\n",
- card->devname, card->hw.S514_cpu_no[0]);
- }else{
- printk(KERN_INFO "%s: Setting CPU to %c and Slot to %i\n",
- card->devname, card->hw.S514_cpu_no[0], card->hw.S514_slot_no);
- }
-
- }else{
- /* 508 Card io port and irq initialization */
- card->hw.port = conf->ioport;
- card->hw.irq = (conf->irq == 9) ? 2 : conf->irq;
- }
-
-
- /* Compute the virtual address of the card in kernel space */
- if(conf->maddr){
- card->hw.dpmbase = phys_to_virt(conf->maddr);
- }else{
- card->hw.dpmbase = (void *)conf->maddr;
- }
-
- card->hw.dpmsize = SDLA_WINDOWSIZE;
-
- /* set the adapter type if using an S514 adapter */
- card->hw.type = (conf->S514_CPU_no[0]) ? SDLA_S514 : conf->hw_opt[0];
- card->hw.pclk = conf->hw_opt[1];
-
- err = sdla_setup(&card->hw, conf->data, conf->data_size);
- if (err){
- printk(KERN_INFO "%s: Hardware setup Failed %i\n",
- card->devname,err);
- return err;
- }
-
- if(card->hw.type != SDLA_S514)
- irq = (conf->irq == 2) ? 9 : conf->irq; /* IRQ2 -> IRQ9 */
- else
- irq = card->hw.irq;
-
- /* request an interrupt vector - note that interrupts may be shared */
- /* when using the S514 PCI adapter */
-
- if(request_irq(irq, sdla_isr,
- (card->hw.type == SDLA_S514) ? SA_SHIRQ : 0,
- wandev->name, card)){
-
- printk(KERN_INFO "%s: Can't reserve IRQ %d!\n", wandev->name, irq);
- return -EINVAL;
- }
-
- }else{
- printk(KERN_INFO "%s: Card Configured %lu or Piggybacking %i!\n",
- wandev->name,card->configured,card->wandev.piggyback);
- }
-
-
- if (!card->configured){
-
- /* Initialize the Spin lock */
- printk(KERN_INFO "%s: Initializing for SMP\n",wandev->name);
-
- /* Piggyback spin lock has already been initialized,
- * in check_s514/s508_conflicts() */
- if (!card->wandev.piggyback){
- spin_lock_init(&card->wandev.lock);
- }
-
- /* Intialize WAN device data space */
- wandev->irq = irq;
- wandev->dma = 0;
- if(card->hw.type != SDLA_S514){
- wandev->ioport = card->hw.port;
- }else{
- wandev->S514_cpu_no[0] = card->hw.S514_cpu_no[0];
- wandev->S514_slot_no = card->hw.S514_slot_no;
- }
- wandev->maddr = (unsigned long)card->hw.dpmbase;
- wandev->msize = card->hw.dpmsize;
- wandev->hw_opt[0] = card->hw.type;
- wandev->hw_opt[1] = card->hw.pclk;
- wandev->hw_opt[2] = card->hw.memory;
- wandev->hw_opt[3] = card->hw.fwid;
- }
-
- /* Protocol-specific initialization */
- switch (card->hw.fwid) {
-
- case SFID_X25_502:
- case SFID_X25_508:
- printk(KERN_INFO "%s: Starting X.25 Protocol Init.\n",
- card->devname);
- err = wpx_init(card, conf);
- break;
- case SFID_FR502:
- case SFID_FR508:
- printk(KERN_INFO "%s: Starting Frame Relay Protocol Init.\n",
- card->devname);
- err = wpf_init(card, conf);
- break;
- case SFID_PPP502:
- case SFID_PPP508:
- printk(KERN_INFO "%s: Starting PPP Protocol Init.\n",
- card->devname);
- err = wpp_init(card, conf);
- break;
-
- case SFID_CHDLC508:
- case SFID_CHDLC514:
- if (conf->ft1){
- printk(KERN_INFO "%s: Starting FT1 CSU/DSU Config Driver.\n",
- card->devname);
- err = wpft1_init(card, conf);
- break;
-
- }else if (conf->config_id == WANCONFIG_MPPP){
- printk(KERN_INFO "%s: Starting Multi-Port PPP Protocol Init.\n",
- card->devname);
- err = wsppp_init(card,conf);
- break;
-
- }else{
- printk(KERN_INFO "%s: Starting CHDLC Protocol Init.\n",
- card->devname);
- err = wpc_init(card, conf);
- break;
- }
- default:
- printk(KERN_INFO "%s: Error, Firmware is not supported %X %X!\n",
- wandev->name,card->hw.fwid,SFID_CHDLC508);
- err = -EPROTONOSUPPORT;
- }
-
- if (err != 0){
- if (err == -EPROTONOSUPPORT){
- printk(KERN_INFO
- "%s: Error, Protocol selected has not been compiled!\n",
- card->devname);
- printk(KERN_INFO
- "%s: Re-configure the kernel and re-build the modules!\n",
- card->devname);
- }
-
- release_hw(card);
- wandev->state = WAN_UNCONFIGURED;
- return err;
- }
-
-
- /* Reserve I/O region and schedule background task */
- if(card->hw.type != SDLA_S514 && !card->wandev.piggyback)
- if (!request_region(card->hw.port, card->hw.io_range,
- wandev->name)) {
- printk(KERN_WARNING "port 0x%04x busy\n", card->hw.port);
- release_hw(card);
- wandev->state = WAN_UNCONFIGURED;
- return -EBUSY;
- }
-
- /* Only use the polling routine for the X25 protocol */
-
- card->wandev.critical=0;
- return 0;
-}
-
-/*==================================================================
- * configure_s508_card
- *
- * For a S508 adapter, check for a possible configuration error in that
- * we are loading an adapter in the same IO port as a previously loaded S508
- * card.
- */
-
-static int check_s508_conflicts (sdla_t* card,wandev_conf_t* conf, int *irq)
-{
- unsigned long smp_flags;
- int i;
-
- if (conf->ioport <= 0) {
- printk(KERN_INFO
- "%s: can't configure without I/O port address!\n",
- card->wandev.name);
- return -EINVAL;
- }
-
- if (conf->irq <= 0) {
- printk(KERN_INFO "%s: can't configure without IRQ!\n",
- card->wandev.name);
- return -EINVAL;
- }
-
- if (test_bit(0,&card->configured))
- return 0;
-
-
- /* Check for already loaded card with the same IO port and IRQ
- * If found, copy its hardware configuration and use its
- * resources (i.e. piggybacking)
- */
-
- for (i = 0; i < ncards; i++) {
- sdla_t *nxt_card = &card_array[i];
-
- /* Skip the current card ptr */
- if (nxt_card == card)
- continue;
-
-
- /* Find a card that is already configured with the
- * same IO Port */
- if ((nxt_card->hw.type == SDLA_S508) &&
- (nxt_card->hw.port == conf->ioport) &&
- (nxt_card->next == NULL)){
-
- /* We found a card the card that has same configuration
- * as us. This means, that we must setup this card in
- * piggibacking mode. However, only CHDLC and MPPP protocol
- * support this setup */
-
- if ((conf->config_id == WANCONFIG_CHDLC ||
- conf->config_id == WANCONFIG_MPPP) &&
- (nxt_card->wandev.config_id == WANCONFIG_CHDLC ||
- nxt_card->wandev.config_id == WANCONFIG_MPPP)){
-
- *irq = nxt_card->hw.irq;
- memcpy(&card->hw, &nxt_card->hw, sizeof(sdlahw_t));
-
- /* The master could already be running, we must
- * set this as a critical area */
- lock_adapter_irq(&nxt_card->wandev.lock, &smp_flags);
-
- nxt_card->next = card;
- card->next = nxt_card;
-
- card->wandev.piggyback = WANOPT_YES;
-
- /* We must initialise the piggiback spin lock here
- * since isr will try to lock card->next if it
- * exists */
- spin_lock_init(&card->wandev.lock);
-
- unlock_adapter_irq(&nxt_card->wandev.lock, &smp_flags);
- break;
- }else{
- /* Trying to run piggibacking with a wrong protocol */
- printk(KERN_INFO "%s: ERROR: Resource busy, ioport: 0x%x\n"
- "%s: This protocol doesn't support\n"
- "%s: multi-port operation!\n",
- card->devname,nxt_card->hw.port,
- card->devname,card->devname);
- return -EEXIST;
- }
- }
- }
-
-
- /* Make sure I/O port region is available only if we are the
- * master device. If we are running in piggybacking mode,
- * we will use the resources of the master card. */
- if (!card->wandev.piggyback) {
- struct resource *rr =
- request_region(conf->ioport, SDLA_MAXIORANGE, "sdlamain");
- release_region(conf->ioport, SDLA_MAXIORANGE);
-
- if (!rr) {
- printk(KERN_INFO
- "%s: I/O region 0x%X - 0x%X is in use!\n",
- card->wandev.name, conf->ioport,
- conf->ioport + SDLA_MAXIORANGE - 1);
- return -EINVAL;
- }
- }
-
- return 0;
-}
-
-/*==================================================================
- * configure_s514_card
- *
- * For a S514 adapter, check for a possible configuration error in that
- * we are loading an adapter in the same slot as a previously loaded S514
- * card.
- */
-
-
-static int check_s514_conflicts(sdla_t* card,wandev_conf_t* conf, int *irq)
-{
- unsigned long smp_flags;
- int i;
-
- if (test_bit(0,&card->configured))
- return 0;
-
-
- /* Check for already loaded card with the same IO port and IRQ
- * If found, copy its hardware configuration and use its
- * resources (i.e. piggybacking)
- */
-
- for (i = 0; i < ncards; i ++) {
-
- sdla_t* nxt_card = &card_array[i];
- if(nxt_card == card)
- continue;
-
- if((nxt_card->hw.type == SDLA_S514) &&
- (nxt_card->hw.S514_slot_no == conf->PCI_slot_no) &&
- (nxt_card->hw.S514_cpu_no[0] == conf->S514_CPU_no[0])&&
- (nxt_card->next == NULL)){
-
-
- if ((conf->config_id == WANCONFIG_CHDLC ||
- conf->config_id == WANCONFIG_MPPP) &&
- (nxt_card->wandev.config_id == WANCONFIG_CHDLC ||
- nxt_card->wandev.config_id == WANCONFIG_MPPP)){
-
- *irq = nxt_card->hw.irq;
- memcpy(&card->hw, &nxt_card->hw, sizeof(sdlahw_t));
-
- /* The master could already be running, we must
- * set this as a critical area */
- lock_adapter_irq(&nxt_card->wandev.lock,&smp_flags);
- nxt_card->next = card;
- card->next = nxt_card;
-
- card->wandev.piggyback = WANOPT_YES;
-
- /* We must initialise the piggiback spin lock here
- * since isr will try to lock card->next if it
- * exists */
- spin_lock_init(&card->wandev.lock);
-
- unlock_adapter_irq(&nxt_card->wandev.lock,&smp_flags);
-
- }else{
- /* Trying to run piggibacking with a wrong protocol */
- printk(KERN_INFO "%s: ERROR: Resource busy: CPU %c PCISLOT %i\n"
- "%s: This protocol doesn't support\n"
- "%s: multi-port operation!\n",
- card->devname,
- conf->S514_CPU_no[0],conf->PCI_slot_no,
- card->devname,card->devname);
- return -EEXIST;
- }
- }
- }
-
- return 0;
-}
-
-
-
-/*============================================================================
- * Shut down WAN link driver.
- * o shut down adapter hardware
- * o release system resources.
- *
- * This function is called by the router when device is being unregistered or
- * when it handles ROUTER_DOWN IOCTL.
- */
-static int shutdown(struct wan_device* wandev)
-{
- sdla_t *card;
- int err=0;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL)){
- return -EFAULT;
- }
-
- if (wandev->state == WAN_UNCONFIGURED){
- return 0;
- }
-
- card = wandev->private;
-
- if (card->tty_opt){
- if (card->tty_open){
- printk(KERN_INFO
- "%s: Shutdown Failed: TTY is still open\n",
- card->devname);
- return -EBUSY;
- }
- }
-
- wandev->state = WAN_UNCONFIGURED;
-
- set_bit(PERI_CRIT,(void*)&wandev->critical);
-
- /* In case of piggibacking, make sure that
- * we never try to shutdown both devices at the same
- * time, because they depend on one another */
-
- if (card->disable_comm){
- card->disable_comm(card);
- }
-
- /* Release Resources */
- release_hw(card);
-
- /* only free the allocated I/O range if not an S514 adapter */
- if (wandev->hw_opt[0] != SDLA_S514 && !card->configured){
- release_region(card->hw.port, card->hw.io_range);
- }
-
- if (!card->configured){
- memset(&card->hw, 0, sizeof(sdlahw_t));
- if (card->next){
- memset(&card->next->hw, 0, sizeof(sdlahw_t));
- }
- }
-
-
- clear_bit(PERI_CRIT,(void*)&wandev->critical);
- return err;
-}
-
-static void release_hw (sdla_t *card)
-{
- sdla_t *nxt_card;
-
-
- /* Check if next device exists */
- if (card->next){
- nxt_card = card->next;
- /* If next device is down then release resources */
- if (nxt_card->wandev.state == WAN_UNCONFIGURED){
- if (card->wandev.piggyback){
- /* If this device is piggyback then use
- * information of the master device
- */
- printk(KERN_INFO "%s: Piggyback shutting down\n",card->devname);
- sdla_down(&card->next->hw);
- free_irq(card->wandev.irq, card->next);
- card->configured = 0;
- card->next->configured = 0;
- card->wandev.piggyback = 0;
- }else{
- /* Master device shutting down */
- printk(KERN_INFO "%s: Master shutting down\n",card->devname);
- sdla_down(&card->hw);
- free_irq(card->wandev.irq, card);
- card->configured = 0;
- card->next->configured = 0;
- }
- }else{
- printk(KERN_INFO "%s: Device still running %i\n",
- nxt_card->devname,nxt_card->wandev.state);
-
- card->configured = 1;
- }
- }else{
- printk(KERN_INFO "%s: Master shutting down\n",card->devname);
- sdla_down(&card->hw);
- free_irq(card->wandev.irq, card);
- card->configured = 0;
- }
- return;
-}
-
-
-/*============================================================================
- * Driver I/O control.
- * o verify arguments
- * o perform requested action
- *
- * This function is called when router handles one of the reserved user
- * IOCTLs. Note that 'arg' stil points to user address space.
- */
-static int ioctl(struct wan_device* wandev, unsigned cmd, unsigned long arg)
-{
- sdla_t* card;
- int err;
-
- /* sanity checks */
- if ((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
- if (wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- card = wandev->private;
-
- if(card->hw.type != SDLA_S514){
- disable_irq(card->hw.irq);
- }
-
- if (test_bit(SEND_CRIT, (void*)&wandev->critical)) {
- return -EAGAIN;
- }
-
- switch (cmd) {
- case WANPIPE_DUMP:
- err = ioctl_dump(wandev->private, (void*)arg);
- break;
-
- case WANPIPE_EXEC:
- err = ioctl_exec(wandev->private, (void*)arg, cmd);
- break;
- default:
- err = -EINVAL;
- }
-
- return err;
-}
-
-/****** Driver IOCTL Handlers ***********************************************/
-
-/*============================================================================
- * Dump adapter memory to user buffer.
- * o verify request structure
- * o copy request structure to kernel data space
- * o verify length/offset
- * o verify user buffer
- * o copy adapter memory image to user buffer
- *
- * Note: when dumping memory, this routine switches curent dual-port memory
- * vector, so care must be taken to avoid racing conditions.
- */
-static int ioctl_dump (sdla_t* card, sdla_dump_t* u_dump)
-{
- sdla_dump_t dump;
- unsigned winsize;
- unsigned long oldvec; /* DPM window vector */
- unsigned long smp_flags;
- int err = 0;
-
- if(copy_from_user((void*)&dump, (void*)u_dump, sizeof(sdla_dump_t)))
- return -EFAULT;
-
- if ((dump.magic != WANPIPE_MAGIC) ||
- (dump.offset + dump.length > card->hw.memory))
- return -EINVAL;
-
- winsize = card->hw.dpmsize;
-
- if(card->hw.type != SDLA_S514) {
-
- lock_adapter_irq(&card->wandev.lock, &smp_flags);
-
- oldvec = card->hw.vector;
- while (dump.length) {
- /* current offset */
- unsigned pos = dump.offset % winsize;
- /* current vector */
- unsigned long vec = dump.offset - pos;
- unsigned len = (dump.length > (winsize - pos)) ?
- (winsize - pos) : dump.length;
- /* relocate window */
- if (sdla_mapmem(&card->hw, vec) != 0) {
- err = -EIO;
- break;
- }
-
- if(copy_to_user((void *)dump.ptr,
- (u8 *)card->hw.dpmbase + pos, len)){
-
- unlock_adapter_irq(&card->wandev.lock, &smp_flags);
- return -EFAULT;
- }
-
- dump.length -= len;
- dump.offset += len;
- dump.ptr = (char*)dump.ptr + len;
- }
-
- sdla_mapmem(&card->hw, oldvec);/* restore DPM window position */
- unlock_adapter_irq(&card->wandev.lock, &smp_flags);
-
- }else {
-
- if(copy_to_user((void *)dump.ptr,
- (u8 *)card->hw.dpmbase + dump.offset, dump.length)){
- return -EFAULT;
- }
- }
-
- return err;
-}
-
-/*============================================================================
- * Execute adapter firmware command.
- * o verify request structure
- * o copy request structure to kernel data space
- * o call protocol-specific 'exec' function
- */
-static int ioctl_exec (sdla_t* card, sdla_exec_t* u_exec, int cmd)
-{
- sdla_exec_t exec;
- int err=0;
-
- if (card->exec == NULL && cmd == WANPIPE_EXEC){
- return -ENODEV;
- }
-
- if(copy_from_user((void*)&exec, (void*)u_exec, sizeof(sdla_exec_t)))
- return -EFAULT;
-
- if ((exec.magic != WANPIPE_MAGIC) || (exec.cmd == NULL))
- return -EINVAL;
-
- switch (cmd) {
- case WANPIPE_EXEC:
- err = card->exec(card, exec.cmd, exec.data);
- break;
- }
- return err;
-}
-
-/******* Miscellaneous ******************************************************/
-
-/*============================================================================
- * SDLA Interrupt Service Routine.
- * o acknowledge SDLA hardware interrupt.
- * o call protocol-specific interrupt service routine, if any.
- */
-STATIC irqreturn_t sdla_isr (int irq, void* dev_id, struct pt_regs *regs)
-{
-#define card ((sdla_t*)dev_id)
-
- if(card->hw.type == SDLA_S514) { /* handle interrrupt on S514 */
- u32 int_status;
- unsigned char CPU_no = card->hw.S514_cpu_no[0];
- unsigned char card_found_for_IRQ;
- u8 IRQ_count = 0;
-
- for(;;) {
-
- read_S514_int_stat(&card->hw, &int_status);
-
- /* check if the interrupt is for this device */
- if(!((unsigned char)int_status &
- (IRQ_CPU_A | IRQ_CPU_B)))
- return IRQ_HANDLED;
-
- /* if the IRQ is for both CPUs on the same adapter, */
- /* then alter the interrupt status so as to handle */
- /* one CPU at a time */
- if(((unsigned char)int_status & (IRQ_CPU_A | IRQ_CPU_B))
- == (IRQ_CPU_A | IRQ_CPU_B)) {
- int_status &= (CPU_no == S514_CPU_A) ?
- ~IRQ_CPU_B : ~IRQ_CPU_A;
- }
-
- card_found_for_IRQ = 0;
-
- /* check to see that the CPU number for this device */
- /* corresponds to the interrupt status read */
- switch (CPU_no) {
- case S514_CPU_A:
- if((unsigned char)int_status &
- IRQ_CPU_A)
- card_found_for_IRQ = 1;
- break;
-
- case S514_CPU_B:
- if((unsigned char)int_status &
- IRQ_CPU_B)
- card_found_for_IRQ = 1;
- break;
- }
-
- /* exit if the interrupt is for another CPU on the */
- /* same IRQ */
- if(!card_found_for_IRQ)
- return IRQ_HANDLED;
-
- if (!card ||
- (card->wandev.state == WAN_UNCONFIGURED && !card->configured)){
- printk(KERN_INFO
- "Received IRQ %d for CPU #%c\n",
- irq, CPU_no);
- printk(KERN_INFO
- "IRQ for unconfigured adapter\n");
- S514_intack(&card->hw, int_status);
- return IRQ_HANDLED;
- }
-
- if (card->in_isr) {
- printk(KERN_INFO
- "%s: interrupt re-entrancy on IRQ %d\n",
- card->devname, card->wandev.irq);
- S514_intack(&card->hw, int_status);
- return IRQ_HANDLED;
- }
-
- spin_lock(&card->wandev.lock);
- if (card->next){
- spin_lock(&card->next->wandev.lock);
- }
-
- S514_intack(&card->hw, int_status);
- if (card->isr)
- card->isr(card);
-
- if (card->next){
- spin_unlock(&card->next->wandev.lock);
- }
- spin_unlock(&card->wandev.lock);
-
- /* handle a maximum of two interrupts (one for each */
- /* CPU on the adapter) before returning */
- if((++ IRQ_count) == 2)
- return IRQ_HANDLED;
- }
- }
-
- else { /* handle interrupt on S508 adapter */
-
- if (!card || ((card->wandev.state == WAN_UNCONFIGURED) && !card->configured))
- return IRQ_HANDLED;
-
- if (card->in_isr) {
- printk(KERN_INFO
- "%s: interrupt re-entrancy on IRQ %d!\n",
- card->devname, card->wandev.irq);
- return IRQ_HANDLED;
- }
-
- spin_lock(&card->wandev.lock);
- if (card->next){
- spin_lock(&card->next->wandev.lock);
- }
-
- sdla_intack(&card->hw);
- if (card->isr)
- card->isr(card);
-
- if (card->next){
- spin_unlock(&card->next->wandev.lock);
- }
- spin_unlock(&card->wandev.lock);
-
- }
- return IRQ_HANDLED;
-#undef card
-}
-
-/*============================================================================
- * This routine is called by the protocol-specific modules when network
- * interface is being open. The only reason we need this, is because we
- * have to call MOD_INC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void wanpipe_open (sdla_t* card)
-{
- ++card->open_cnt;
-}
-
-/*============================================================================
- * This routine is called by the protocol-specific modules when network
- * interface is being closed. The only reason we need this, is because we
- * have to call MOD_DEC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void wanpipe_close (sdla_t* card)
-{
- --card->open_cnt;
-}
-
-/*============================================================================
- * Set WAN device state.
- */
-void wanpipe_set_state (sdla_t* card, int state)
-{
- if (card->wandev.state != state) {
- switch (state) {
- case WAN_CONNECTED:
- printk (KERN_INFO "%s: link connected!\n",
- card->devname);
- break;
-
- case WAN_CONNECTING:
- printk (KERN_INFO "%s: link connecting...\n",
- card->devname);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO "%s: link disconnected!\n",
- card->devname);
- break;
- }
- card->wandev.state = state;
- }
- card->state_tick = jiffies;
-}
-
-sdla_t * wanpipe_find_card (char *name)
-{
- int cnt;
- for (cnt = 0; cnt < ncards; ++ cnt) {
- sdla_t* card = &card_array[cnt];
- if (!strcmp(card->devname,name))
- return card;
- }
- return NULL;
-}
-
-sdla_t * wanpipe_find_card_num (int num)
-{
- if (num < 1 || num > ncards)
- return NULL;
- num--;
- return &card_array[num];
-}
-
-/*
- * @work_pointer: work_struct to be done;
- * should already have PREPARE_WORK() or
- * INIT_WORK() done on it by caller;
- */
-void wanpipe_queue_work (struct work_struct *work_pointer)
-{
- if (test_and_set_bit(1, (void*)&wanpipe_bh_critical))
- printk(KERN_INFO "CRITICAL IN QUEUING WORK\n");
-
- queue_work(wanpipe_wq, work_pointer);
- clear_bit(1,(void*)&wanpipe_bh_critical);
-}
-
-void wakeup_sk_bh(struct net_device *dev)
-{
- wanpipe_common_t *chan = dev->priv;
-
- if (test_bit(0,&chan->common_critical))
- return;
-
- if (chan->sk && chan->tx_timer){
- chan->tx_timer->expires=jiffies+1;
- add_timer(chan->tx_timer);
- }
-}
-
-int change_dev_flags(struct net_device *dev, unsigned flags)
-{
- struct ifreq if_info;
- mm_segment_t fs = get_fs();
- int err;
-
- memset(&if_info, 0, sizeof(if_info));
- strcpy(if_info.ifr_name, dev->name);
- if_info.ifr_flags = flags;
-
- set_fs(get_ds()); /* get user space block */
- err = devinet_ioctl(SIOCSIFFLAGS, &if_info);
- set_fs(fs);
-
- return err;
-}
-
-unsigned long get_ip_address(struct net_device *dev, int option)
-{
-
- struct in_ifaddr *ifaddr;
- struct in_device *in_dev;
- unsigned long addr = 0;
-
- rcu_read_lock();
- if ((in_dev = __in_dev_get_rcu(dev)) == NULL){
- goto out;
- }
-
- if ((ifaddr = in_dev->ifa_list)== NULL ){
- goto out;
- }
-
- switch (option){
-
- case WAN_LOCAL_IP:
- addr = ifaddr->ifa_local;
- break;
-
- case WAN_POINTOPOINT_IP:
- addr = ifaddr->ifa_address;
- break;
-
- case WAN_NETMASK_IP:
- addr = ifaddr->ifa_mask;
- break;
-
- case WAN_BROADCAST_IP:
- addr = ifaddr->ifa_broadcast;
- break;
- default:
- break;
- }
-
-out:
- rcu_read_unlock();
- return addr;
-}
-
-void add_gateway(sdla_t *card, struct net_device *dev)
-{
- mm_segment_t oldfs;
- struct rtentry route;
- int res;
-
- memset((char*)&route,0,sizeof(struct rtentry));
-
- ((struct sockaddr_in *)
- &(route.rt_dst))->sin_addr.s_addr = 0;
- ((struct sockaddr_in *)
- &(route.rt_dst))->sin_family = AF_INET;
-
- ((struct sockaddr_in *)
- &(route.rt_genmask))->sin_addr.s_addr = 0;
- ((struct sockaddr_in *)
- &(route.rt_genmask)) ->sin_family = AF_INET;
-
-
- route.rt_flags = 0;
- route.rt_dev = dev->name;
-
- oldfs = get_fs();
- set_fs(get_ds());
- res = ip_rt_ioctl(SIOCADDRT,&route);
- set_fs(oldfs);
-
- if (res == 0){
- printk(KERN_INFO "%s: Gateway added for %s\n",
- card->devname,dev->name);
- }
-
- return;
-}
-
-MODULE_LICENSE("GPL");
-
-/****** End *********************************************************/
diff --git a/drivers/net/wan/wanpipe_multppp.c b/drivers/net/wan/wanpipe_multppp.c
deleted file mode 100644
index 812a1183c50..00000000000
--- a/drivers/net/wan/wanpipe_multppp.c
+++ /dev/null
@@ -1,2358 +0,0 @@
-/*****************************************************************************
-* wanpipe_multppp.c Multi-Port PPP driver module.
-*
-* Authors: Nenad Corbic <ncorbic@sangoma.com>
-*
-* Copyright: (c) 1995-2001 Sangoma Technologies Inc.
-*
-* This program is free software; you can redistribute it and/or
-* modify it under the terms of the GNU General Public License
-* as published by the Free Software Foundation; either version
-* 2 of the License, or (at your option) any later version.
-* ============================================================================
-* Dec 15 2000 Updated for 2.4.X kernel
-* Nov 15 2000 Fixed the SyncPPP support for kernels 2.2.16 and higher.
-* The pppstruct has changed.
-* Jul 13 2000 Using the kernel Syncppp module on top of RAW Wanpipe CHDLC
-* module.
-*****************************************************************************/
-
-#include <linux/module.h>
-#include <linux/kernel.h> /* printk(), and other useful stuff */
-#include <linux/stddef.h> /* offsetof(), etc. */
-#include <linux/errno.h> /* return codes */
-#include <linux/string.h> /* inline memset(), etc. */
-#include <linux/slab.h> /* kmalloc(), kfree() */
-#include <linux/wanrouter.h> /* WAN router definitions */
-#include <linux/wanpipe.h> /* WANPIPE common user API definitions */
-#include <linux/if_arp.h> /* ARPHRD_* defines */
-#include <linux/jiffies.h> /* time_after() macro */
-
-#include <linux/in.h> /* sockaddr_in */
-#include <linux/inet.h>
-#include <linux/if.h>
-#include <asm/byteorder.h> /* htons(), etc. */
-#include <linux/sdlapci.h>
-#include <asm/io.h>
-
-#include <linux/sdla_chdlc.h> /* CHDLC firmware API definitions */
-#include <linux/sdla_asy.h> /* CHDLC (async) API definitions */
-
-#include <linux/if_wanpipe_common.h> /* Socket Driver common area */
-#include <linux/if_wanpipe.h>
-
-
-#include <linux/inetdevice.h>
-#include <asm/uaccess.h>
-
-#include <net/syncppp.h>
-
-
-/****** Defines & Macros ****************************************************/
-
-#ifdef _DEBUG_
-#define STATIC
-#else
-#define STATIC static
-#endif
-
-/* reasons for enabling the timer interrupt on the adapter */
-#define TMR_INT_ENABLED_UDP 0x01
-#define TMR_INT_ENABLED_UPDATE 0x02
-#define TMR_INT_ENABLED_CONFIG 0x04
-
-#define CHDLC_DFLT_DATA_LEN 1500 /* default MTU */
-#define CHDLC_HDR_LEN 1
-
-#define IFF_POINTTOPOINT 0x10
-
-#define CHDLC_API 0x01
-
-#define PORT(x) (x == 0 ? "PRIMARY" : "SECONDARY" )
-#define MAX_BH_BUFF 10
-
-#define CRC_LENGTH 2
-#define PPP_HEADER_LEN 4
-
-/******Data Structures*****************************************************/
-
-/* This structure is placed in the private data area of the device structure.
- * The card structure used to occupy the private area but now the following
- * structure will incorporate the card structure along with CHDLC specific data
- */
-
-typedef struct chdlc_private_area
-{
- void *if_ptr; /* General Pointer used by SPPP */
- wanpipe_common_t common;
- sdla_t *card;
- int TracingEnabled; /* For enabling Tracing */
- unsigned long curr_trace_addr; /* Used for Tracing */
- unsigned long start_trace_addr;
- unsigned long end_trace_addr;
- unsigned long base_addr_trace_buffer;
- unsigned long end_addr_trace_buffer;
- unsigned short number_trace_elements;
- unsigned available_buffer_space;
- unsigned long router_start_time;
- unsigned char route_status;
- unsigned char route_removed;
- unsigned long tick_counter; /* For 5s timeout counter */
- unsigned long router_up_time;
- u32 IP_address; /* IP addressing */
- u32 IP_netmask;
- unsigned char mc; /* Mulitcast support on/off */
- unsigned short udp_pkt_lgth; /* udp packet processing */
- char udp_pkt_src;
- char udp_pkt_data[MAX_LGTH_UDP_MGNT_PKT];
- unsigned short timer_int_enabled;
- char update_comms_stats; /* updating comms stats */
-
- //FIXME: add driver stats as per frame relay!
-
-} chdlc_private_area_t;
-
-/* Route Status options */
-#define NO_ROUTE 0x00
-#define ADD_ROUTE 0x01
-#define ROUTE_ADDED 0x02
-#define REMOVE_ROUTE 0x03
-
-
-/* variable for keeping track of enabling/disabling FT1 monitor status */
-static int rCount = 0;
-
-/* variable for tracking how many interfaces to open for WANPIPE on the
- two ports */
-
-extern void disable_irq(unsigned int);
-extern void enable_irq(unsigned int);
-
-/****** Function Prototypes *************************************************/
-/* WAN link driver entry points. These are called by the WAN router module. */
-static int update(struct wan_device* wandev);
-static int new_if(struct wan_device* wandev, struct net_device* dev,
- wanif_conf_t* conf);
-static int del_if(struct wan_device* wandev, struct net_device* dev);
-
-/* Network device interface */
-static int if_init(struct net_device* dev);
-static int if_open(struct net_device* dev);
-static int if_close(struct net_device* dev);
-static int if_send(struct sk_buff* skb, struct net_device* dev);
-static struct net_device_stats* if_stats(struct net_device* dev);
-
-static void if_tx_timeout(struct net_device *dev);
-
-/* CHDLC Firmware interface functions */
-static int chdlc_configure (sdla_t* card, void* data);
-static int chdlc_comm_enable (sdla_t* card);
-static int chdlc_comm_disable (sdla_t* card);
-static int chdlc_read_version (sdla_t* card, char* str);
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode);
-static int chdlc_send (sdla_t* card, void* data, unsigned len);
-static int chdlc_read_comm_err_stats (sdla_t* card);
-static int chdlc_read_op_stats (sdla_t* card);
-static int config_chdlc (sdla_t *card);
-
-
-/* Miscellaneous CHDLC Functions */
-static int set_chdlc_config (sdla_t* card);
-static void init_chdlc_tx_rx_buff(sdla_t* card, struct net_device *dev);
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb);
-static int process_chdlc_exception(sdla_t *card);
-static int process_global_exception(sdla_t *card);
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area);
-static void port_set_state (sdla_t *card, int);
-
-/* Interrupt handlers */
-static void wsppp_isr (sdla_t* card);
-static void rx_intr (sdla_t* card);
-static void timer_intr(sdla_t *);
-
-/* Miscellaneous functions */
-static int reply_udp( unsigned char *data, unsigned int mbox_len );
-static int intr_test( sdla_t* card);
-static int udp_pkt_type( struct sk_buff *skb , sdla_t* card);
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area);
-static unsigned short calc_checksum (char *, int);
-static void s508_lock (sdla_t *card, unsigned long *smp_flags);
-static void s508_unlock (sdla_t *card, unsigned long *smp_flags);
-static void send_ppp_term_request(struct net_device *dev);
-
-
-static int Intr_test_counter;
-/****** Public Functions ****************************************************/
-
-/*============================================================================
- * Cisco HDLC protocol initialization routine.
- *
- * This routine is called by the main WANPIPE module during setup. At this
- * point adapter is completely initialized and firmware is running.
- * o read firmware version (to make sure it's alive)
- * o configure adapter
- * o initialize protocol-specific fields of the adapter data space.
- *
- * Return: 0 o.k.
- * < 0 failure.
- */
-int wsppp_init (sdla_t* card, wandev_conf_t* conf)
-{
- unsigned char port_num;
- int err;
- unsigned long max_permitted_baud = 0;
- SHARED_MEMORY_INFO_STRUCT *flags;
-
- union
- {
- char str[80];
- } u;
- volatile CHDLC_MAILBOX_STRUCT* mb;
- CHDLC_MAILBOX_STRUCT* mb1;
- unsigned long timeout;
-
- /* Verify configuration ID */
- if (conf->config_id != WANCONFIG_MPPP) {
- printk(KERN_INFO "%s: invalid configuration ID %u!\n",
- card->devname, conf->config_id);
- return -EINVAL;
- }
-
- /* Find out which Port to use */
- if ((conf->comm_port == WANOPT_PRI) || (conf->comm_port == WANOPT_SEC)){
- if (card->next){
-
- if (conf->comm_port != card->next->u.c.comm_port){
- card->u.c.comm_port = conf->comm_port;
- }else{
- printk(KERN_ERR "%s: ERROR - %s port used!\n",
- card->wandev.name, PORT(conf->comm_port));
- return -EINVAL;
- }
- }else{
- card->u.c.comm_port = conf->comm_port;
- }
- }else{
- printk(KERN_ERR "%s: ERROR - Invalid Port Selected!\n",
- card->wandev.name);
- return -EINVAL;
- }
-
-
- /* Initialize protocol-specific fields */
- if(card->hw.type != SDLA_S514){
-
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase;
- }else{
- card->mbox = (void *) card->hw.dpmbase +
- SEC_BASE_ADDR_MB_STRUCT - PRI_BASE_ADDR_MB_STRUCT;
- }
- }else{
- /* for a S514 adapter, set a pointer to the actual mailbox in the */
- /* allocated virtual memory area */
- if (card->u.c.comm_port == WANOPT_PRI){
- card->mbox = (void *) card->hw.dpmbase + PRI_BASE_ADDR_MB_STRUCT;
- }else{
- card->mbox = (void *) card->hw.dpmbase + SEC_BASE_ADDR_MB_STRUCT;
- }
- }
-
- mb = mb1 = card->mbox;
-
- if (!card->configured){
-
- /* The board will place an 'I' in the return code to indicate that it is
- ready to accept commands. We expect this to be completed in less
- than 1 second. */
-
- timeout = jiffies + 1 * HZ;
- while (mb->return_code != 'I') /* Wait 1s for board to initialize */
- if (time_after(jiffies, timeout)) break;
-
- if (mb->return_code != 'I') {
- printk(KERN_INFO
- "%s: Initialization not completed by adapter\n",
- card->devname);
- printk(KERN_INFO "Please contact Sangoma representative.\n");
- return -EIO;
- }
- }
-
- /* Read firmware version. Note that when adapter initializes, it
- * clears the mailbox, so it may appear that the first command was
- * executed successfully when in fact it was merely erased. To work
- * around this, we execute the first command twice.
- */
-
- if (chdlc_read_version(card, u.str))
- return -EIO;
-
- printk(KERN_INFO "%s: Running Raw CHDLC firmware v%s\n"
- "%s: for Multi-Port PPP protocol.\n",
- card->devname,u.str,card->devname);
-
- card->isr = &wsppp_isr;
- card->poll = NULL;
- card->exec = NULL;
- card->wandev.update = &update;
- card->wandev.new_if = &new_if;
- card->wandev.del_if = &del_if;
- card->wandev.udp_port = conf->udp_port;
-
- card->wandev.new_if_cnt = 0;
-
- /* reset the number of times the 'update()' proc has been called */
- card->u.c.update_call_count = 0;
-
- card->wandev.ttl = conf->ttl;
- card->wandev.interface = conf->interface;
-
- if ((card->u.c.comm_port == WANOPT_SEC && conf->interface == WANOPT_V35)&&
- card->hw.type != SDLA_S514){
- printk(KERN_INFO "%s: ERROR - V35 Interface not supported on S508 %s port \n",
- card->devname, PORT(card->u.c.comm_port));
- return -EIO;
- }
-
-
- card->wandev.clocking = conf->clocking;
-
- port_num = card->u.c.comm_port;
-
- /* Setup Port Bps */
-
- if(card->wandev.clocking) {
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
- /* For Primary Port 0 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- PRI_MAX_BAUD_RATE_S514 :
- PRI_MAX_BAUD_RATE_S508;
- }
- else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- max_permitted_baud =
- (card->hw.type == SDLA_S514) ?
- SEC_MAX_BAUD_RATE_S514 :
- SEC_MAX_BAUD_RATE_S508;
- }
-
- if(conf->bps > max_permitted_baud) {
- conf->bps = max_permitted_baud;
- printk(KERN_INFO "%s: Baud too high!\n",
- card->wandev.name);
- printk(KERN_INFO "%s: Baud rate set to %lu bps\n",
- card->wandev.name, max_permitted_baud);
- }
-
- card->wandev.bps = conf->bps;
- }else{
- card->wandev.bps = 0;
- }
-
- /* Setup the Port MTU */
- if((port_num == WANOPT_PRI) || card->u.c.receive_only) {
-
- /* For Primary Port 0 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, PRI_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- } else if(port_num == WANOPT_SEC) {
- /* For Secondary Port 1 */
- card->wandev.mtu =
- (conf->mtu >= MIN_LGTH_CHDLC_DATA_CFG) ?
- min_t(unsigned int, conf->mtu, SEC_MAX_NO_DATA_BYTES_IN_FRAME) :
- CHDLC_DFLT_DATA_LEN;
- }
-
- /* Add on a PPP Header */
- card->wandev.mtu += PPP_HEADER_LEN;
-
- /* Set up the interrupt status area */
- /* Read the CHDLC Configuration and obtain:
- * Ptr to shared memory infor struct
- * Use this pointer to calculate the value of card->u.c.flags !
- */
- mb1->buffer_length = 0;
- mb1->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb1) ? mb1->return_code : CMD_TIMEOUT;
- if(err != COMMAND_OK) {
- clear_bit(1, (void*)&card->wandev.critical);
-
- if(card->hw.type != SDLA_S514)
- enable_irq(card->hw.irq);
-
- chdlc_error(card, err, mb1);
- return -EIO;
- }
-
- if(card->hw.type == SDLA_S514){
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct));
- }else{
- card->u.c.flags = (void *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb1->data)->
- ptr_shared_mem_info_struct % SDLA_WINDOWSIZE));
- }
-
- flags = card->u.c.flags;
-
- /* This is for the ports link state */
- card->wandev.state = WAN_DUALPORT;
- card->u.c.state = WAN_DISCONNECTED;
-
-
- if (!card->wandev.piggyback){
- err = intr_test(card);
-
- if(err || (Intr_test_counter < MAX_INTR_TEST_COUNTER)) {
- printk(KERN_ERR "%s: Interrupt test failed (%i)\n",
- card->devname, Intr_test_counter);
- printk(KERN_ERR "%s: Please choose another interrupt\n",
- card->devname);
- return -EIO;
- }
-
- printk(KERN_INFO "%s: Interrupt test passed (%i)\n",
- card->devname, Intr_test_counter);
- }
-
-
- if (chdlc_set_intr_mode(card, APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return -EIO;
- }
-
- /* Mask the Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
-
- printk(KERN_INFO "\n");
-
- return 0;
-}
-
-/******* WAN Device Driver Entry Points *************************************/
-
-/*============================================================================
- * Update device status & statistics
- * This procedure is called when updating the PROC file system and returns
- * various communications statistics. These statistics are accumulated from 3
- * different locations:
- * 1) The 'if_stats' recorded for the device.
- * 2) Communication error statistics on the adapter.
- * 3) CHDLC operational statistics on the adapter.
- * The board level statistics are read during a timer interrupt. Note that we
- * read the error and operational statistics during consecitive timer ticks so
- * as to minimize the time that we are inside the interrupt handler.
- *
- */
-static int update(struct wan_device* wandev)
-{
- sdla_t* card = wandev->private;
- struct net_device* dev;
- volatile chdlc_private_area_t* chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags;
- unsigned long timeout;
-
- /* sanity checks */
- if((wandev == NULL) || (wandev->private == NULL))
- return -EFAULT;
-
- if(wandev->state == WAN_UNCONFIGURED)
- return -ENODEV;
-
- /* more sanity checks */
- if(!card->u.c.flags)
- return -ENODEV;
-
- if((dev=card->wandev.dev) == NULL)
- return -ENODEV;
-
- if((chdlc_priv_area=dev->priv) == NULL)
- return -ENODEV;
-
- flags = card->u.c.flags;
-
- if(chdlc_priv_area->update_comms_stats){
- return -EAGAIN;
- }
-
- /* we will need 2 timer interrupts to complete the */
- /* reading of the statistics */
- chdlc_priv_area->update_comms_stats = 2;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UPDATE;
-
- /* wait a maximum of 1 second for the statistics to be updated */
- timeout = jiffies + 1 * HZ;
- for(;;) {
- if(chdlc_priv_area->update_comms_stats == 0)
- break;
- if (time_after(jiffies, timeout)){
- chdlc_priv_area->update_comms_stats = 0;
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- return -EAGAIN;
- }
- }
-
- return 0;
-}
-
-
-/*============================================================================
- * Create new logical channel.
- * This routine is called by the router when ROUTER_IFNEW IOCTL is being
- * handled.
- * o parse media- and hardware-specific configuration
- * o make sure that a new channel can be created
- * o allocate resources, if necessary
- * o prepare network device structure for registaration.
- *
- * Return: 0 o.k.
- * < 0 failure (channel will not be created)
- */
-static int new_if(struct wan_device* wandev, struct net_device* pdev,
- wanif_conf_t* conf)
-{
-
- struct ppp_device *pppdev = (struct ppp_device *)pdev;
- struct net_device *dev = NULL;
- struct sppp *sp;
- sdla_t* card = wandev->private;
- chdlc_private_area_t* chdlc_priv_area;
-
- if ((conf->name[0] == '\0') || (strlen(conf->name) > WAN_IFNAME_SZ)) {
- printk(KERN_INFO "%s: invalid interface name!\n",
- card->devname);
- return -EINVAL;
- }
-
- /* allocate and initialize private data */
- chdlc_priv_area = kmalloc(sizeof(chdlc_private_area_t), GFP_KERNEL);
-
- if(chdlc_priv_area == NULL)
- return -ENOMEM;
-
- memset(chdlc_priv_area, 0, sizeof(chdlc_private_area_t));
-
- chdlc_priv_area->card = card;
-
- /* initialize data */
- strcpy(card->u.c.if_name, conf->name);
-
- if(card->wandev.new_if_cnt > 0) {
- kfree(chdlc_priv_area);
- return -EEXIST;
- }
-
- card->wandev.new_if_cnt++;
-
- chdlc_priv_area->TracingEnabled = 0;
-
- //We don't need this any more
- chdlc_priv_area->route_status = NO_ROUTE;
- chdlc_priv_area->route_removed = 0;
-
- printk(KERN_INFO "%s: Firmware running in HDLC STREAMING Mode\n",
- wandev->name);
-
- /* Setup wanpipe as a router (WANPIPE) or as an API */
- if( strcmp(conf->usedby, "WANPIPE") == 0) {
- printk(KERN_INFO "%s: Driver running in WANPIPE mode!\n",
- wandev->name);
- card->u.c.usedby = WANPIPE;
- } else {
- printk(KERN_INFO
- "%s: API Mode is not supported for SyncPPP!\n",
- wandev->name);
- kfree(chdlc_priv_area);
- return -EINVAL;
- }
-
- /* Get Multicast Information */
- chdlc_priv_area->mc = conf->mc;
-
-
- chdlc_priv_area->if_ptr = pppdev;
-
- /* prepare network device data space for registration */
-
- strcpy(dev->name,card->u.c.if_name);
-
- /* Attach PPP protocol layer to pppdev
- * The sppp_attach() will initilize the dev structure
- * and setup ppp layer protocols.
- * All we have to do is to bind in:
- * if_open(), if_close(), if_send() and get_stats() functions.
- */
- sppp_attach(pppdev);
- dev = pppdev->dev;
- sp = &pppdev->sppp;
-
- /* Enable PPP Debugging */
- // FIXME Fix this up somehow
- //sp->pp_flags |= PP_DEBUG;
- sp->pp_flags &= ~PP_CISCO;
-
- dev->init = &if_init;
- dev->priv = chdlc_priv_area;
-
- return 0;
-}
-
-
-
-
-/*============================================================================
- * Delete logical channel.
- */
-static int del_if(struct wan_device* wandev, struct net_device* dev)
-{
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- sdla_t *card = chdlc_priv_area->card;
- unsigned long smp_lock;
-
- /* Detach the PPP layer */
- printk(KERN_INFO "%s: Detaching SyncPPP Module from %s\n",
- wandev->name,dev->name);
-
- lock_adapter_irq(&wandev->lock,&smp_lock);
-
- sppp_detach(dev);
- chdlc_priv_area->if_ptr=NULL;
-
- chdlc_set_intr_mode(card, 0);
- if (card->u.c.comm_enabled)
- chdlc_comm_disable(card);
- unlock_adapter_irq(&wandev->lock,&smp_lock);
-
- port_set_state(card, WAN_DISCONNECTED);
-
- return 0;
-}
-
-
-/****** Network Device Interface ********************************************/
-
-/*============================================================================
- * Initialize Linux network interface.
- *
- * This routine is called only once for each interface, during Linux network
- * interface registration. Returning anything but zero will fail interface
- * registration.
- */
-static int if_init(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct wan_device* wandev = &card->wandev;
-
- /* NOTE: Most of the dev initialization was
- * done in sppp_attach(), called by new_if()
- * function. All we have to do here is
- * to link four major routines below.
- */
-
- /* Initialize device driver entry points */
- dev->open = &if_open;
- dev->stop = &if_close;
- dev->hard_start_xmit = &if_send;
- dev->get_stats = &if_stats;
- dev->tx_timeout = &if_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
-
- /* Initialize hardware parameters */
- dev->irq = wandev->irq;
- dev->dma = wandev->dma;
- dev->base_addr = wandev->ioport;
- dev->mem_start = wandev->maddr;
- dev->mem_end = wandev->maddr + wandev->msize - 1;
-
- /* Set transmit buffer queue length
- * If we over fill this queue the packets will
- * be droped by the kernel.
- * sppp_attach() sets this to 10, but
- * 100 will give us more room at low speeds.
- */
- dev->tx_queue_len = 100;
-
- return 0;
-}
-
-
-/*============================================================================
- * Handle transmit timeout event from netif watchdog
- */
-static void if_tx_timeout(struct net_device *dev)
-{
- chdlc_private_area_t* chan = dev->priv;
- sdla_t *card = chan->card;
-
- /* If our device stays busy for at least 5 seconds then we will
- * kick start the device by making dev->tbusy = 0. We expect
- * that our device never stays busy more than 5 seconds. So this
- * is only used as a last resort.
- */
-
- ++card->wandev.stats.collisions;
-
- printk (KERN_INFO "%s: Transmit timed out on %s\n", card->devname,dev->name);
- netif_wake_queue (dev);
-}
-
-
-/*============================================================================
- * Open network interface.
- * o enable communications and interrupts.
- * o prevent module from unloading by incrementing use count
- *
- * Return 0 if O.k. or errno.
- */
-static int if_open(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
- struct timeval tv;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- /* Only one open per interface is allowed */
- if (netif_running(dev))
- return -EBUSY;
-
- /* Start PPP Layer */
- if (sppp_open(dev)){
- return -EIO;
- }
-
- do_gettimeofday(&tv);
- chdlc_priv_area->router_start_time = tv.tv_sec;
-
- netif_start_queue(dev);
-
- wanpipe_open(card);
-
- chdlc_priv_area->timer_int_enabled |= TMR_INT_ENABLED_CONFIG;
- flags->interrupt_info_struct.interrupt_permission |= APP_INT_ON_TIMER;
- return 0;
-}
-
-/*============================================================================
- * Close network interface.
- * o if this is the last close, then disable communications and interrupts.
- * o reset flags.
- */
-static int if_close(struct net_device* dev)
-{
- chdlc_private_area_t* chdlc_priv_area = dev->priv;
- sdla_t* card = chdlc_priv_area->card;
-
- /* Stop the PPP Layer */
- sppp_close(dev);
- netif_stop_queue(dev);
-
- wanpipe_close(card);
-
- return 0;
-}
-
-/*============================================================================
- * Send a packet on a network interface.
- * o set tbusy flag (marks start of the transmission) to block a timer-based
- * transmit from overlapping.
- * o check link state. If link is not up, then drop the packet.
- * o execute adapter send command.
- * o free socket buffer
- *
- * Return: 0 complete (socket buffer must be freed)
- * non-0 packet may be re-transmitted (tbusy must be set)
- *
- * Notes:
- * 1. This routine is called either by the protocol stack or by the "net
- * bottom half" (with interrupts enabled).
- * 2. Setting tbusy flag will inhibit further transmit requests from the
- * protocol stack and can be used for flow control with protocol layer.
- */
-static int if_send(struct sk_buff* skb, struct net_device* dev)
-{
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
- sdla_t *card = chdlc_priv_area->card;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- INTERRUPT_INFORMATION_STRUCT *chdlc_int = &flags->interrupt_info_struct;
- int udp_type = 0;
- unsigned long smp_flags;
- int err=0;
-
- netif_stop_queue(dev);
-
-
- if (skb == NULL){
- /* If we get here, some higher layer thinks we've missed an
- * tx-done interrupt.
- */
- printk(KERN_INFO "%s: Received NULL skb buffer! interface %s got kicked!\n",
- card->devname, dev->name);
-
- netif_wake_queue(dev);
- return 0;
- }
-
- if (ntohs(skb->protocol) != htons(PVC_PROT)){
- /* check the udp packet type */
-
- udp_type = udp_pkt_type(skb, card);
- if (udp_type == UDP_CPIPE_TYPE){
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_STACK, card, skb, dev,
- chdlc_priv_area)){
- chdlc_int->interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- netif_start_queue(dev);
- return 0;
- }
- }
-
- /* Lock the 508 Card: SMP is supported */
- if(card->hw.type != SDLA_S514){
- s508_lock(card,&smp_flags);
- }
-
- if (test_and_set_bit(SEND_CRIT, (void*)&card->wandev.critical)){
-
- printk(KERN_INFO "%s: Critical in if_send: %lx\n",
- card->wandev.name,card->wandev.critical);
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_crit_exit;
- }
-
- if (card->wandev.state != WAN_CONNECTED){
- ++card->wandev.stats.tx_dropped;
- netif_start_queue(dev);
- goto if_send_crit_exit;
- }
-
- if (chdlc_send(card, skb->data, skb->len)){
- netif_stop_queue(dev);
-
- }else{
- ++card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += skb->len;
- dev->trans_start = jiffies;
- netif_start_queue(dev);
- }
-
-if_send_crit_exit:
- if (!(err=netif_queue_stopped(dev))){
- dev_kfree_skb_any(skb);
- }else{
- chdlc_priv_area->tick_counter = jiffies;
- chdlc_int->interrupt_permission |= APP_INT_ON_TX_FRAME;
- }
-
- clear_bit(SEND_CRIT, (void*)&card->wandev.critical);
- if(card->hw.type != SDLA_S514){
- s508_unlock(card,&smp_flags);
- }
-
- return err;
-}
-
-
-/*============================================================================
- * Reply to UDP Management system.
- * Return length of reply.
- */
-static int reply_udp( unsigned char *data, unsigned int mbox_len )
-{
-
- unsigned short len, udp_length, temp, ip_length;
- unsigned long ip_temp;
- int even_bound = 0;
- chdlc_udp_pkt_t *c_udp_pkt = (chdlc_udp_pkt_t *)data;
-
- /* Set length of packet */
- len = sizeof(ip_pkt_t)+
- sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* fill in UDP reply */
- c_udp_pkt->wp_mgmt.request_reply = UDPMGMT_REPLY;
-
- /* fill in UDP length */
- udp_length = sizeof(udp_pkt_t)+
- sizeof(wp_mgmt_t)+
- sizeof(cblock_t)+
- sizeof(trace_info_t)+
- mbox_len;
-
- /* put it on an even boundary */
- if ( udp_length & 0x0001 ) {
- udp_length += 1;
- len += 1;
- even_bound = 1;
- }
-
- temp = (udp_length<<8)|(udp_length>>8);
- c_udp_pkt->udp_pkt.udp_length = temp;
-
- /* swap UDP ports */
- temp = c_udp_pkt->udp_pkt.udp_src_port;
- c_udp_pkt->udp_pkt.udp_src_port =
- c_udp_pkt->udp_pkt.udp_dst_port;
- c_udp_pkt->udp_pkt.udp_dst_port = temp;
-
- /* add UDP pseudo header */
- temp = 0x1100;
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound)) = temp;
- temp = (udp_length<<8)|(udp_length>>8);
- *((unsigned short *)(c_udp_pkt->data+mbox_len+even_bound+2)) = temp;
-
-
- /* calculate UDP checksum */
- c_udp_pkt->udp_pkt.udp_checksum = 0;
- c_udp_pkt->udp_pkt.udp_checksum = calc_checksum(&data[UDP_OFFSET],udp_length+UDP_OFFSET);
-
- /* fill in IP length */
- ip_length = len;
- temp = (ip_length<<8)|(ip_length>>8);
- c_udp_pkt->ip_pkt.total_length = temp;
-
- /* swap IP addresses */
- ip_temp = c_udp_pkt->ip_pkt.ip_src_address;
- c_udp_pkt->ip_pkt.ip_src_address = c_udp_pkt->ip_pkt.ip_dst_address;
- c_udp_pkt->ip_pkt.ip_dst_address = ip_temp;
-
- /* fill in IP checksum */
- c_udp_pkt->ip_pkt.hdr_checksum = 0;
- c_udp_pkt->ip_pkt.hdr_checksum = calc_checksum(data,sizeof(ip_pkt_t));
-
- return len;
-
-} /* reply_udp */
-
-unsigned short calc_checksum (char *data, int len)
-{
- unsigned short temp;
- unsigned long sum=0;
- int i;
-
- for( i = 0; i <len; i+=2 ) {
- memcpy(&temp,&data[i],2);
- sum += (unsigned long)temp;
- }
-
- while (sum >> 16 ) {
- sum = (sum & 0xffffUL) + (sum >> 16);
- }
-
- temp = (unsigned short)sum;
- temp = ~temp;
-
- if( temp == 0 )
- temp = 0xffff;
-
- return temp;
-}
-
-
-/*============================================================================
- * Get ethernet-style interface statistics.
- * Return a pointer to struct enet_statistics.
- */
-static struct net_device_stats* if_stats(struct net_device* dev)
-{
- sdla_t *my_card;
- chdlc_private_area_t* chdlc_priv_area;
-
- /* Shutdown bug fix. In del_if() we kill
- * dev->priv pointer. This function, gets
- * called after del_if(), thus check
- * if pointer has been deleted */
- if ((chdlc_priv_area=dev->priv) == NULL)
- return NULL;
-
- my_card = chdlc_priv_area->card;
- return &my_card->wandev.stats;
-}
-
-
-/****** Cisco HDLC Firmware Interface Functions *******************************/
-
-/*============================================================================
- * Read firmware code version.
- * Put code version as ASCII string in str.
- */
-static int chdlc_read_version (sdla_t* card, char* str)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int len;
- char err;
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- }
- else if (str) { /* is not null */
- len = mb->buffer_length;
- memcpy(str, mb->data, len);
- str[len] = '\0';
- }
- return (err);
-}
-
-/*-----------------------------------------------------------------------------
- * Configure CHDLC firmware.
- */
-static int chdlc_configure (sdla_t* card, void* data)
-{
- int err;
- CHDLC_MAILBOX_STRUCT *mailbox = card->mbox;
- int data_length = sizeof(CHDLC_CONFIGURATION_STRUCT);
-
- mailbox->buffer_length = data_length;
- memcpy(mailbox->data, data, data_length);
- mailbox->command = SET_CHDLC_CONFIGURATION;
- err = sdla_exec(mailbox) ? mailbox->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) chdlc_error (card, err, mailbox);
-
- return err;
-}
-
-
-/*============================================================================
- * Set interrupt mode -- HDLC Version.
- */
-
-static int chdlc_set_intr_mode (sdla_t* card, unsigned mode)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_INT_TRIGGERS_STRUCT* int_data =
- (CHDLC_INT_TRIGGERS_STRUCT *)mb->data;
- int err;
-
- int_data->CHDLC_interrupt_triggers = mode;
- int_data->IRQ = card->hw.irq;
- int_data->interrupt_timer = 1;
-
- mb->buffer_length = sizeof(CHDLC_INT_TRIGGERS_STRUCT);
- mb->command = SET_CHDLC_INTERRUPT_TRIGGERS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error (card, err, mb);
- return err;
-}
-
-
-/*============================================================================
- * Enable communications.
- */
-
-static int chdlc_comm_enable (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = ENABLE_CHDLC_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card, err, mb);
- else
- card->u.c.comm_enabled=1;
-
- return err;
-}
-
-/*============================================================================
- * Disable communications and Drop the Modem lines (DCD and RTS).
- */
-static int chdlc_comm_disable (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = DISABLE_CHDLC_COMMUNICATIONS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
-
- return err;
-}
-
-/*============================================================================
- * Read communication error statistics.
- */
-static int chdlc_read_comm_err_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_COMMS_ERROR_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Read CHDLC operational statistics.
- */
-static int chdlc_read_op_stats (sdla_t* card)
-{
- int err;
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_OPERATIONAL_STATS;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK)
- chdlc_error(card,err,mb);
- return err;
-}
-
-
-/*============================================================================
- * Update communications error and general packet statistics.
- */
-static int update_comms_stats(sdla_t* card,
- chdlc_private_area_t* chdlc_priv_area)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- COMMS_ERROR_STATS_STRUCT* err_stats;
- CHDLC_OPERATIONAL_STATS_STRUCT *op_stats;
-
- /* on the first timer interrupt, read the comms error statistics */
- if(chdlc_priv_area->update_comms_stats == 2) {
- if(chdlc_read_comm_err_stats(card))
- return 1;
- err_stats = (COMMS_ERROR_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_over_errors =
- err_stats->Rx_overrun_err_count;
- card->wandev.stats.rx_crc_errors =
- err_stats->CRC_err_count;
- card->wandev.stats.rx_frame_errors =
- err_stats->Rx_abort_count;
- card->wandev.stats.rx_fifo_errors =
- err_stats->Rx_dis_pri_bfrs_full_count;
- card->wandev.stats.rx_missed_errors =
- card->wandev.stats.rx_fifo_errors;
- card->wandev.stats.tx_aborted_errors =
- err_stats->sec_Tx_abort_count;
- }
-
- /* on the second timer interrupt, read the operational statistics */
- else {
- if(chdlc_read_op_stats(card))
- return 1;
- op_stats = (CHDLC_OPERATIONAL_STATS_STRUCT *)mb->data;
- card->wandev.stats.rx_length_errors =
- (op_stats->Rx_Data_discard_short_count +
- op_stats->Rx_Data_discard_long_count);
- }
-
- return 0;
-}
-
-/*============================================================================
- * Send packet.
- * Return: 0 - o.k.
- * 1 - no transmit buffers available
- */
-static int chdlc_send (sdla_t* card, void* data, unsigned len)
-{
- CHDLC_DATA_TX_STATUS_EL_STRUCT *txbuf = card->u.c.txbuf;
-
- if (txbuf->opp_flag)
- return 1;
-
- sdla_poke(&card->hw, txbuf->ptr_data_bfr, data, len);
-
- txbuf->frame_length = len;
- txbuf->opp_flag = 1; /* start transmission */
-
- /* Update transmit buffer control fields */
- card->u.c.txbuf = ++txbuf;
-
- if ((void*)txbuf > card->u.c.txbuf_last)
- card->u.c.txbuf = card->u.c.txbuf_base;
-
- return 0;
-}
-
-/****** Firmware Error Handler **********************************************/
-
-/*============================================================================
- * Firmware error handler.
- * This routine is called whenever firmware command returns non-zero
- * return code.
- *
- * Return zero if previous command has to be cancelled.
- */
-static int chdlc_error (sdla_t *card, int err, CHDLC_MAILBOX_STRUCT *mb)
-{
- unsigned cmd = mb->command;
-
- switch (err) {
-
- case CMD_TIMEOUT:
- printk(KERN_ERR "%s: command 0x%02X timed out!\n",
- card->devname, cmd);
- break;
-
- case S514_BOTH_PORTS_SAME_CLK_MODE:
- if(cmd == SET_CHDLC_CONFIGURATION) {
- printk(KERN_INFO
- "%s: Configure both ports for the same clock source\n",
- card->devname);
- break;
- }
-
- default:
- printk(KERN_INFO "%s: command 0x%02X returned 0x%02X!\n",
- card->devname, cmd, err);
- }
-
- return 0;
-}
-
-/****** Interrupt Handlers **************************************************/
-
-/*============================================================================
- * Cisco HDLC interrupt service routine.
- */
-STATIC void wsppp_isr (sdla_t* card)
-{
- struct net_device* dev;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
- int i;
- sdla_t *my_card;
-
-
- /* Check for which port the interrupt has been generated
- * Since Secondary Port is piggybacking on the Primary
- * the check must be done here.
- */
-
- flags = card->u.c.flags;
- if (!flags->interrupt_info_struct.interrupt_type){
- /* Check for a second port (piggybacking) */
- if((my_card = card->next)){
- flags = my_card->u.c.flags;
- if (flags->interrupt_info_struct.interrupt_type){
- card = my_card;
- card->isr(card);
- return;
- }
- }
- }
-
- dev = card->wandev.dev;
- card->in_isr = 1;
- flags = card->u.c.flags;
-
- /* If we get an interrupt with no network device, stop the interrupts
- * and issue an error */
- if ((!dev || !dev->priv) && flags->interrupt_info_struct.interrupt_type !=
- COMMAND_COMPLETE_APP_INT_PEND){
- goto isr_done;
- }
-
-
- /* if critical due to peripheral operations
- * ie. update() or getstats() then reset the interrupt and
- * wait for the board to retrigger.
- */
- if(test_bit(PERI_CRIT, (void*)&card->wandev.critical)) {
- flags->interrupt_info_struct.
- interrupt_type = 0;
- goto isr_done;
- }
-
-
- /* On a 508 Card, if critical due to if_send
- * Major Error !!!
- */
- if(card->hw.type != SDLA_S514) {
- if(test_bit(0, (void*)&card->wandev.critical)) {
- printk(KERN_INFO "%s: Critical while in ISR: %lx\n",
- card->devname, card->wandev.critical);
- goto isr_done;
- }
- }
-
- switch(flags->interrupt_info_struct.interrupt_type) {
-
- case RX_APP_INT_PEND: /* 0x01: receive interrupt */
- rx_intr(card);
- break;
-
- case TX_APP_INT_PEND: /* 0x02: transmit interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TX_FRAME;
-
- netif_wake_queue(dev);
- break;
-
- case COMMAND_COMPLETE_APP_INT_PEND:/* 0x04: cmd cplt */
- ++ Intr_test_counter;
- break;
-
- case CHDLC_EXCEP_COND_APP_INT_PEND: /* 0x20 */
- process_chdlc_exception(card);
- break;
-
- case GLOBAL_EXCEP_COND_APP_INT_PEND:
- process_global_exception(card);
- break;
-
- case TIMER_APP_INT_PEND:
- timer_intr(card);
- break;
-
- default:
- printk(KERN_INFO "%s: spurious interrupt 0x%02X!\n",
- card->devname,
- flags->interrupt_info_struct.interrupt_type);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
- break;
- }
-
-isr_done:
- card->in_isr = 0;
- flags->interrupt_info_struct.interrupt_type = 0;
-}
-
-/*============================================================================
- * Receive interrupt handler.
- */
-static void rx_intr (sdla_t* card)
-{
- struct net_device *dev;
- chdlc_private_area_t *chdlc_priv_area;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- CHDLC_DATA_RX_STATUS_EL_STRUCT *rxbuf = card->u.c.rxmb;
- struct sk_buff *skb;
- unsigned len;
- unsigned addr = rxbuf->ptr_data_bfr;
- void *buf;
- int i,udp_type;
-
- if (rxbuf->opp_flag != 0x01) {
- printk(KERN_INFO
- "%s: corrupted Rx buffer @ 0x%X, flag = 0x%02X!\n",
- card->devname, (unsigned)rxbuf, rxbuf->opp_flag);
- printk(KERN_INFO "Code name: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codename[i]);
- printk(KERN_INFO "\nCode version: ");
- for(i = 0; i < 4; i ++)
- printk(KERN_INFO "%c",
- flags->global_info_struct.codeversion[i]);
- printk(KERN_INFO "\n");
-
-
- /* Bug Fix: Mar 6 2000
- * If we get a corrupted mailbox, it measn that driver
- * is out of sync with the firmware. There is no recovery.
- * If we don't turn off all interrupts for this card
- * the machine will crash.
- */
- printk(KERN_INFO "%s: Critical router failure ...!!!\n", card->devname);
- printk(KERN_INFO "Please contact Sangoma Technologies !\n");
- chdlc_set_intr_mode(card,0);
- return;
- }
-
- dev = card->wandev.dev;
-
- if (!dev){
- goto rx_exit;
- }
-
- if (!netif_running(dev)){
- goto rx_exit;
- }
-
- chdlc_priv_area = dev->priv;
-
- if (rxbuf->error_flag){
- goto rx_exit;
- }
- /* Take off two CRC bytes */
-
- if (rxbuf->frame_length < 7 || rxbuf->frame_length > 1506 ){
- goto rx_exit;
- }
-
- len = rxbuf->frame_length - CRC_LENGTH;
-
- /* Allocate socket buffer */
- skb = dev_alloc_skb(len);
-
- if (skb == NULL) {
- if (net_ratelimit()){
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- ++card->wandev.stats.rx_dropped;
- goto rx_exit;
- }
-
- /* Copy data to the socket buffer */
- if((addr + len) > card->u.c.rx_top + 1) {
- unsigned tmp = card->u.c.rx_top - addr + 1;
- buf = skb_put(skb, tmp);
- sdla_peek(&card->hw, addr, buf, tmp);
- addr = card->u.c.rx_base;
- len -= tmp;
- }
-
- buf = skb_put(skb, len);
- sdla_peek(&card->hw, addr, buf, len);
-
- skb->protocol = htons(ETH_P_WAN_PPP);
-
- card->wandev.stats.rx_packets ++;
- card->wandev.stats.rx_bytes += skb->len;
- udp_type = udp_pkt_type( skb, card );
-
- if(udp_type == UDP_CPIPE_TYPE) {
- if(store_udp_mgmt_pkt(UDP_PKT_FRM_NETWORK,
- card, skb, dev, chdlc_priv_area)) {
- flags->interrupt_info_struct.
- interrupt_permission |=
- APP_INT_ON_TIMER;
- }
- }else{
- /* Pass it up the protocol stack */
- skb->dev = dev;
- skb->mac.raw = skb->data;
- netif_rx(skb);
- dev->last_rx = jiffies;
- }
-
-rx_exit:
- /* Release buffer element and calculate a pointer to the next one */
- rxbuf->opp_flag = 0x00;
- card->u.c.rxmb = ++ rxbuf;
- if((void*)rxbuf > card->u.c.rxbuf_last){
- card->u.c.rxmb = card->u.c.rxbuf_base;
- }
-}
-
-/*============================================================================
- * Timer interrupt handler.
- * The timer interrupt is used for two purposes:
- * 1) Processing udp calls from 'cpipemon'.
- * 2) Reading board-level statistics for updating the proc file system.
- */
-void timer_intr(sdla_t *card)
-{
- struct net_device* dev;
- chdlc_private_area_t* chdlc_priv_area = NULL;
- SHARED_MEMORY_INFO_STRUCT* flags = NULL;
-
- dev = card->wandev.dev;
- chdlc_priv_area = dev->priv;
-
- if (chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_CONFIG) {
- if (!config_chdlc(card)){
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_CONFIG;
- }
- }
-
- /* process a udp call if pending */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UDP) {
- process_udp_mgmt_pkt(card, dev,
- chdlc_priv_area);
- chdlc_priv_area->timer_int_enabled &= ~TMR_INT_ENABLED_UDP;
- }
-
-
- /* read the communications statistics if required */
- if(chdlc_priv_area->timer_int_enabled & TMR_INT_ENABLED_UPDATE) {
- update_comms_stats(card, chdlc_priv_area);
- if(!(-- chdlc_priv_area->update_comms_stats)) {
- chdlc_priv_area->timer_int_enabled &=
- ~TMR_INT_ENABLED_UPDATE;
- }
- }
-
- /* only disable the timer interrupt if there are no udp or statistic */
- /* updates pending */
- if(!chdlc_priv_area->timer_int_enabled) {
- flags = card->u.c.flags;
- flags->interrupt_info_struct.interrupt_permission &=
- ~APP_INT_ON_TIMER;
- }
-}
-
-/*------------------------------------------------------------------------------
- Miscellaneous Functions
- - set_chdlc_config() used to set configuration options on the board
-------------------------------------------------------------------------------*/
-
-static int set_chdlc_config(sdla_t* card)
-{
-
- CHDLC_CONFIGURATION_STRUCT cfg;
-
- memset(&cfg, 0, sizeof(CHDLC_CONFIGURATION_STRUCT));
-
- if(card->wandev.clocking)
- cfg.baud_rate = card->wandev.bps;
-
- cfg.line_config_options = (card->wandev.interface == WANOPT_RS232) ?
- INTERFACE_LEVEL_RS232 : INTERFACE_LEVEL_V35;
-
- cfg.modem_config_options = 0;
- //API OPTIONS
- cfg.CHDLC_API_options = DISCARD_RX_ERROR_FRAMES;
- cfg.modem_status_timer = 100;
- cfg.CHDLC_protocol_options = HDLC_STREAMING_MODE;
- cfg.percent_data_buffer_for_Tx = 50;
- cfg.CHDLC_statistics_options = (CHDLC_TX_DATA_BYTE_COUNT_STAT |
- CHDLC_RX_DATA_BYTE_COUNT_STAT);
- cfg.max_CHDLC_data_field_length = card->wandev.mtu;
-
- cfg.transmit_keepalive_timer = 0;
- cfg.receive_keepalive_timer = 0;
- cfg.keepalive_error_tolerance = 0;
- cfg.SLARP_request_timer = 0;
-
- cfg.IP_address = 0;
- cfg.IP_netmask = 0;
-
- return chdlc_configure(card, &cfg);
-}
-
-/*============================================================================
- * Process global exception condition
- */
-static int process_global_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mbox = card->mbox;
- int err;
-
- mbox->buffer_length = 0;
- mbox->command = READ_GLOBAL_EXCEPTION_CONDITION;
- err = sdla_exec(mbox) ? mbox->return_code : CMD_TIMEOUT;
-
- if(err != CMD_TIMEOUT ){
-
- switch(mbox->return_code) {
-
- case EXCEP_MODEM_STATUS_CHANGE:
-
- printk(KERN_INFO "%s: Modem status change\n",
- card->devname);
-
- switch(mbox->data[0] & (DCD_HIGH | CTS_HIGH)) {
- case (DCD_HIGH):
- printk(KERN_INFO "%s: DCD high, CTS low\n",card->devname);
- break;
- case (CTS_HIGH):
- printk(KERN_INFO "%s: DCD low, CTS high\n",card->devname);
- break;
- case ((DCD_HIGH | CTS_HIGH)):
- printk(KERN_INFO "%s: DCD high, CTS high\n",card->devname);
- break;
- default:
- printk(KERN_INFO "%s: DCD low, CTS low\n",card->devname);
- break;
- }
-
- if (!(mbox->data[0] & DCD_HIGH) || !(mbox->data[0] & DCD_HIGH)){
- //printk(KERN_INFO "Sending TERM Request Manually !\n");
- send_ppp_term_request(card->wandev.dev);
- }
- break;
-
- case EXCEP_TRC_DISABLED:
- printk(KERN_INFO "%s: Line trace disabled\n",
- card->devname);
- break;
-
- case EXCEP_IRQ_TIMEOUT:
- printk(KERN_INFO "%s: IRQ timeout occurred\n",
- card->devname);
- break;
-
- default:
- printk(KERN_INFO "%s: Global exception %x\n",
- card->devname, mbox->return_code);
- break;
- }
- }
- return 0;
-}
-
-
-/*============================================================================
- * Process chdlc exception condition
- */
-static int process_chdlc_exception(sdla_t *card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_EXCEPTION_CONDITION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if(err != CMD_TIMEOUT) {
-
- switch (err) {
-
- case EXCEP_LINK_ACTIVE:
- port_set_state(card, WAN_CONNECTED);
- break;
-
- case EXCEP_LINK_INACTIVE_MODEM:
- port_set_state(card, WAN_DISCONNECTED);
- break;
-
- case EXCEP_LOOPBACK_CONDITION:
- printk(KERN_INFO "%s: Loopback Condition Detected.\n",
- card->devname);
- break;
-
- case NO_CHDLC_EXCEP_COND_TO_REPORT:
- printk(KERN_INFO "%s: No exceptions reported.\n",
- card->devname);
- break;
- default:
- printk(KERN_INFO "%s: Exception Condition %x!\n",
- card->devname,err);
- break;
- }
-
- }
- return 0;
-}
-
-
-/*=============================================================================
- * Store a UDP management packet for later processing.
- */
-
-static int store_udp_mgmt_pkt(char udp_pkt_src, sdla_t* card,
- struct sk_buff *skb, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area )
-{
- int udp_pkt_stored = 0;
-
- if(!chdlc_priv_area->udp_pkt_lgth &&
- (skb->len <= MAX_LGTH_UDP_MGNT_PKT)) {
- chdlc_priv_area->udp_pkt_lgth = skb->len;
- chdlc_priv_area->udp_pkt_src = udp_pkt_src;
- memcpy(chdlc_priv_area->udp_pkt_data, skb->data, skb->len);
- chdlc_priv_area->timer_int_enabled = TMR_INT_ENABLED_UDP;
- udp_pkt_stored = 1;
- }
-
- if(udp_pkt_src == UDP_PKT_FRM_STACK)
- dev_kfree_skb_any(skb);
- else
- dev_kfree_skb_any(skb);
-
- return(udp_pkt_stored);
-}
-
-
-/*=============================================================================
- * Process UDP management packet.
- */
-
-static int process_udp_mgmt_pkt(sdla_t* card, struct net_device* dev,
- chdlc_private_area_t* chdlc_priv_area )
-{
- unsigned char *buf;
- unsigned int frames, len;
- struct sk_buff *new_skb;
- unsigned short buffer_length, real_len;
- unsigned long data_ptr;
- unsigned data_length;
- int udp_mgmt_req_valid = 1;
- CHDLC_MAILBOX_STRUCT *mb = card->mbox;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
- chdlc_udp_pkt_t *chdlc_udp_pkt;
- struct timeval tv;
- int err;
- char ut_char;
-
- chdlc_udp_pkt = (chdlc_udp_pkt_t *) chdlc_priv_area->udp_pkt_data;
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
-
- switch(chdlc_udp_pkt->cblock.command) {
- case READ_GLOBAL_STATISTICS:
- case READ_MODEM_STATUS:
- case READ_CHDLC_LINK_STATUS:
- case CPIPE_ROUTER_UP_TIME:
- case READ_COMMS_ERROR_STATS:
- case READ_CHDLC_OPERATIONAL_STATS:
-
- /* These two commands are executed for
- * each request */
- case READ_CHDLC_CONFIGURATION:
- case READ_CHDLC_CODE_VERSION:
- udp_mgmt_req_valid = 1;
- break;
- default:
- udp_mgmt_req_valid = 0;
- break;
- }
- }
-
- if(!udp_mgmt_req_valid) {
-
- /* set length to 0 */
- chdlc_udp_pkt->cblock.buffer_length = 0;
-
- /* set return code */
- chdlc_udp_pkt->cblock.return_code = 0xCD;
-
- if (net_ratelimit()){
- printk(KERN_INFO
- "%s: Warning, Illegal UDP command attempted from network: %x\n",
- card->devname,chdlc_udp_pkt->cblock.command);
- }
-
- } else {
- unsigned long trace_status_cfg_addr = 0;
- TRACE_STATUS_EL_CFG_STRUCT trace_cfg_struct;
- TRACE_STATUS_ELEMENT_STRUCT trace_element_struct;
-
- switch(chdlc_udp_pkt->cblock.command) {
-
- case CPIPE_ENABLE_TRACING:
- if (!chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
-
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_ACTIVE;
- /* Trace delay mode is not used because it slows
- down transfer and results in a standoff situation
- when there is a lot of data */
-
- /* Configure the Trace based on user inputs */
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->trace_config |=
- chdlc_udp_pkt->data[0];
-
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_deactivation_timer = 4000;
-
-
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- card->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- /* Get the base address of the trace element list */
- mb->buffer_length = 0;
- mb->command = READ_TRACE_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if (err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = err;
- mb->buffer_length = 0;
- break;
- }
-
- trace_status_cfg_addr =((LINE_TRACE_CONFIG_STRUCT *)
- mb->data) -> ptr_trace_stat_el_cfg_struct;
-
- sdla_peek(&card->hw, trace_status_cfg_addr,
- &trace_cfg_struct, sizeof(trace_cfg_struct));
-
- chdlc_priv_area->start_trace_addr = trace_cfg_struct.
- base_addr_trace_status_elements;
-
- chdlc_priv_area->number_trace_elements =
- trace_cfg_struct.number_trace_status_elements;
-
- chdlc_priv_area->end_trace_addr = (unsigned long)
- ((TRACE_STATUS_ELEMENT_STRUCT *)
- chdlc_priv_area->start_trace_addr +
- (chdlc_priv_area->number_trace_elements - 1));
-
- chdlc_priv_area->base_addr_trace_buffer =
- trace_cfg_struct.base_addr_trace_buffer;
-
- chdlc_priv_area->end_addr_trace_buffer =
- trace_cfg_struct.end_addr_trace_buffer;
-
- chdlc_priv_area->curr_trace_addr =
- trace_cfg_struct.next_trace_element_to_use;
-
- chdlc_priv_area->available_buffer_space = 2000 -
- sizeof(ip_pkt_t) -
- sizeof(udp_pkt_t) -
- sizeof(wp_mgmt_t) -
- sizeof(cblock_t) -
- sizeof(trace_info_t);
- }
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- chdlc_priv_area->TracingEnabled = 1;
- break;
-
-
- case CPIPE_DISABLE_TRACING:
- if (chdlc_priv_area->TracingEnabled) {
-
- /* OPERATE_DATALINE_MONITOR */
- mb->buffer_length = sizeof(LINE_TRACE_CONFIG_STRUCT);
- mb->command = SET_TRACE_CONFIGURATION;
- ((LINE_TRACE_CONFIG_STRUCT *)mb->data)->
- trace_config = TRACE_INACTIVE;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- }
-
- chdlc_priv_area->TracingEnabled = 0;
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 0;
- break;
-
-
- case CPIPE_GET_TRACE_INFO:
-
- if (!chdlc_priv_area->TracingEnabled) {
- chdlc_udp_pkt->cblock.return_code = 1;
- mb->buffer_length = 0;
- break;
- }
-
- chdlc_udp_pkt->trace_info.ismoredata = 0x00;
- buffer_length = 0; /* offset of packet already occupied */
-
- for (frames=0; frames < chdlc_priv_area->number_trace_elements; frames++){
-
- trace_pkt_t *trace_pkt = (trace_pkt_t *)
- &chdlc_udp_pkt->data[buffer_length];
-
- sdla_peek(&card->hw, chdlc_priv_area->curr_trace_addr,
- (unsigned char *)&trace_element_struct,
- sizeof(TRACE_STATUS_ELEMENT_STRUCT));
-
- if (trace_element_struct.opp_flag == 0x00) {
- break;
- }
-
- /* get pointer to real data */
- data_ptr = trace_element_struct.ptr_data_bfr;
-
- /* See if there is actual data on the trace buffer */
- if (data_ptr){
- data_length = trace_element_struct.trace_length;
- }else{
- data_length = 0;
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
-
- if( (chdlc_priv_area->available_buffer_space - buffer_length)
- < ( sizeof(trace_pkt_t) + data_length) ) {
-
- /* indicate there are more frames on board & exit */
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- break;
- }
-
- trace_pkt->status = trace_element_struct.trace_type;
-
- trace_pkt->time_stamp =
- trace_element_struct.trace_time_stamp;
-
- trace_pkt->real_length =
- trace_element_struct.trace_length;
-
- /* see if we can fit the frame into the user buffer */
- real_len = trace_pkt->real_length;
-
- if (data_ptr == 0) {
- trace_pkt->data_avail = 0x00;
- } else {
- unsigned tmp = 0;
-
- /* get the data from circular buffer
- must check for end of buffer */
- trace_pkt->data_avail = 0x01;
-
- if ((data_ptr + real_len) >
- chdlc_priv_area->end_addr_trace_buffer + 1){
-
- tmp = chdlc_priv_area->end_addr_trace_buffer - data_ptr + 1;
- sdla_peek(&card->hw, data_ptr,
- trace_pkt->data,tmp);
- data_ptr = chdlc_priv_area->base_addr_trace_buffer;
- }
-
- sdla_peek(&card->hw, data_ptr,
- &trace_pkt->data[tmp], real_len - tmp);
- }
-
- /* zero the opp flag to show we got the frame */
- ut_char = 0x00;
- sdla_poke(&card->hw, chdlc_priv_area->curr_trace_addr, &ut_char, 1);
-
- /* now move onto the next frame */
- chdlc_priv_area->curr_trace_addr += sizeof(TRACE_STATUS_ELEMENT_STRUCT);
-
- /* check if we went over the last address */
- if ( chdlc_priv_area->curr_trace_addr > chdlc_priv_area->end_trace_addr ) {
- chdlc_priv_area->curr_trace_addr = chdlc_priv_area->start_trace_addr;
- }
-
- if(trace_pkt->data_avail == 0x01) {
- buffer_length += real_len - 1;
- }
-
- /* for the header */
- buffer_length += sizeof(trace_pkt_t);
-
- } /* For Loop */
-
- if (frames == chdlc_priv_area->number_trace_elements){
- chdlc_udp_pkt->trace_info.ismoredata = 0x01;
- }
- chdlc_udp_pkt->trace_info.num_frames = frames;
-
- mb->buffer_length = buffer_length;
- chdlc_udp_pkt->cblock.buffer_length = buffer_length;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
-
- break;
-
-
- case CPIPE_FT1_READ_STATUS:
- ((unsigned char *)chdlc_udp_pkt->data )[0] =
- flags->FT1_info_struct.parallel_port_A_input;
-
- ((unsigned char *)chdlc_udp_pkt->data )[1] =
- flags->FT1_info_struct.parallel_port_B_input;
-
- chdlc_udp_pkt->cblock.return_code = COMMAND_OK;
- mb->buffer_length = 2;
- break;
-
- case CPIPE_ROUTER_UP_TIME:
- do_gettimeofday( &tv );
- chdlc_priv_area->router_up_time = tv.tv_sec -
- chdlc_priv_area->router_start_time;
- *(unsigned long *)&chdlc_udp_pkt->data =
- chdlc_priv_area->router_up_time;
- mb->buffer_length = sizeof(unsigned long);
- break;
-
- case FT1_MONITOR_STATUS_CTRL:
- /* Enable FT1 MONITOR STATUS */
- if ((chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_STATUS) ||
- (chdlc_udp_pkt->data[0] & ENABLE_READ_FT1_OP_STATS)) {
-
- if( rCount++ != 0 ) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
-
- /* Disable FT1 MONITOR STATUS */
- if( chdlc_udp_pkt->data[0] == 0) {
-
- if( --rCount != 0) {
- chdlc_udp_pkt->cblock.
- return_code = COMMAND_OK;
- mb->buffer_length = 1;
- break;
- }
- }
-
- default:
- /* it's a board command */
- mb->command = chdlc_udp_pkt->cblock.command;
- mb->buffer_length = chdlc_udp_pkt->cblock.buffer_length;
- if (mb->buffer_length) {
- memcpy(&mb->data, (unsigned char *) chdlc_udp_pkt->
- data, mb->buffer_length);
- }
- /* run the command on the board */
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- if (err != COMMAND_OK) {
- break;
- }
-
- /* copy the result back to our buffer */
- memcpy(&chdlc_udp_pkt->cblock, mb, sizeof(cblock_t));
-
- if (mb->buffer_length) {
- memcpy(&chdlc_udp_pkt->data, &mb->data,
- mb->buffer_length);
- }
-
- } /* end of switch */
- } /* end of else */
-
- /* Fill UDP TTL */
- chdlc_udp_pkt->ip_pkt.ttl = card->wandev.ttl;
-
- len = reply_udp(chdlc_priv_area->udp_pkt_data, mb->buffer_length);
-
- if(chdlc_priv_area->udp_pkt_src == UDP_PKT_FRM_NETWORK) {
- if(!chdlc_send(card, chdlc_priv_area->udp_pkt_data, len)) {
- ++ card->wandev.stats.tx_packets;
- card->wandev.stats.tx_bytes += len;
- }
- } else {
-
- /* Pass it up the stack
- Allocate socket buffer */
- if ((new_skb = dev_alloc_skb(len)) != NULL) {
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, len);
- memcpy(buf, chdlc_priv_area->udp_pkt_data, len);
-
- /* Decapsulate pkt and pass it up the protocol stack */
- new_skb->protocol = htons(ETH_P_IP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
-
- netif_rx(new_skb);
- dev->last_rx = jiffies;
- } else {
-
- printk(KERN_INFO "%s: no socket buffers available!\n",
- card->devname);
- }
- }
-
- chdlc_priv_area->udp_pkt_lgth = 0;
-
- return 0;
-}
-
-/*============================================================================
- * Initialize Receive and Transmit Buffers.
- */
-
-static void init_chdlc_tx_rx_buff(sdla_t* card, struct net_device *dev)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- CHDLC_TX_STATUS_EL_CFG_STRUCT *tx_config;
- CHDLC_RX_STATUS_EL_CFG_STRUCT *rx_config;
- char err;
-
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CONFIGURATION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
-
- if(err != COMMAND_OK) {
- chdlc_error(card,err,mb);
- return;
- }
-
- if(card->hw.type == SDLA_S514) {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct));
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- tx_config->base_addr_Tx_status_elements);
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)
- card->u.c.txbuf_base +
- (tx_config->number_Tx_status_elements - 1);
-
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- rx_config->base_addr_Rx_status_elements);
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)
- card->u.c.rxbuf_base +
- (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- tx_config->next_Tx_status_element_to_use);
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- rx_config->next_Rx_status_element_to_use);
- }
- else {
- tx_config = (CHDLC_TX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Tx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- rx_config = (CHDLC_RX_STATUS_EL_CFG_STRUCT *)(card->hw.dpmbase +
- (((CHDLC_CONFIGURATION_STRUCT *)mb->data)->
- ptr_CHDLC_Rx_stat_el_cfg_struct % SDLA_WINDOWSIZE));
-
- /* Setup Head and Tails for buffers */
- card->u.c.txbuf_base = (void *)(card->hw.dpmbase +
- (tx_config->base_addr_Tx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.txbuf_last =
- (CHDLC_DATA_TX_STATUS_EL_STRUCT *)card->u.c.txbuf_base
- + (tx_config->number_Tx_status_elements - 1);
- card->u.c.rxbuf_base = (void *)(card->hw.dpmbase +
- (rx_config->base_addr_Rx_status_elements % SDLA_WINDOWSIZE));
- card->u.c.rxbuf_last =
- (CHDLC_DATA_RX_STATUS_EL_STRUCT *)card->u.c.rxbuf_base
- + (rx_config->number_Rx_status_elements - 1);
-
- /* Set up next pointer to be used */
- card->u.c.txbuf = (void *)(card->hw.dpmbase +
- (tx_config->next_Tx_status_element_to_use % SDLA_WINDOWSIZE));
- card->u.c.rxmb = (void *)(card->hw.dpmbase +
- (rx_config->next_Rx_status_element_to_use % SDLA_WINDOWSIZE));
- }
-
- /* Setup Actual Buffer Start and end addresses */
- card->u.c.rx_base = rx_config->base_addr_Rx_buffer;
- card->u.c.rx_top = rx_config->end_addr_Rx_buffer;
-
-}
-
-/*=============================================================================
- * Perform Interrupt Test by running READ_CHDLC_CODE_VERSION command MAX_INTR
- * _TEST_COUNTER times.
- */
-static int intr_test( sdla_t* card)
-{
- CHDLC_MAILBOX_STRUCT* mb = card->mbox;
- int err,i;
-
- Intr_test_counter = 0;
-
- /* The critical flag is unset because during initialization (if_open)
- * we want the interrupts to be enabled so that when the wpc_isr is
- * called it does not exit due to critical flag set.
- */
-
- err = chdlc_set_intr_mode(card, APP_INT_ON_COMMAND_COMPLETE);
-
- if (err == CMD_OK) {
- for (i = 0; i < MAX_INTR_TEST_COUNTER; i ++) {
- mb->buffer_length = 0;
- mb->command = READ_CHDLC_CODE_VERSION;
- err = sdla_exec(mb) ? mb->return_code : CMD_TIMEOUT;
- }
- }
- else {
- return err;
- }
-
- err = chdlc_set_intr_mode(card, 0);
-
- if (err != CMD_OK)
- return err;
-
- return 0;
-}
-
-/*==============================================================================
- * Determine what type of UDP call it is. CPIPEAB ?
- */
-static int udp_pkt_type(struct sk_buff *skb, sdla_t* card)
-{
- chdlc_udp_pkt_t *chdlc_udp_pkt = (chdlc_udp_pkt_t *)skb->data;
-
- if (!strncmp(chdlc_udp_pkt->wp_mgmt.signature,UDPMGMT_SIGNATURE,8) &&
- (chdlc_udp_pkt->udp_pkt.udp_dst_port == ntohs(card->wandev.udp_port)) &&
- (chdlc_udp_pkt->ip_pkt.protocol == UDPMGMT_UDP_PROTOCOL) &&
- (chdlc_udp_pkt->wp_mgmt.request_reply == UDPMGMT_REQUEST)) {
- return UDP_CPIPE_TYPE;
- }
- else return UDP_INVALID_TYPE;
-}
-
-/*============================================================================
- * Set PORT state.
- */
-static void port_set_state (sdla_t *card, int state)
-{
- struct net_device *dev = card->wandev.dev;
- chdlc_private_area_t *chdlc_priv_area = dev->priv;
-
- if (card->u.c.state != state)
- {
- switch (state)
- {
- case WAN_CONNECTED:
- printk (KERN_INFO "%s: HDLC link connected!\n",
- card->devname);
- break;
-
- case WAN_CONNECTING:
- printk (KERN_INFO "%s: HDLC link connecting...\n",
- card->devname);
- break;
-
- case WAN_DISCONNECTED:
- printk (KERN_INFO "%s: HDLC link disconnected!\n",
- card->devname);
- break;
- }
-
- card->wandev.state = card->u.c.state = state;
- chdlc_priv_area->common.state = state;
- }
-}
-
-void s508_lock (sdla_t *card, unsigned long *smp_flags)
-{
- spin_lock_irqsave(&card->wandev.lock, *smp_flags);
- if (card->next){
- /* It is ok to use spin_lock here, since we
- * already turned off interrupts */
- spin_lock(&card->next->wandev.lock);
- }
-}
-
-void s508_unlock (sdla_t *card, unsigned long *smp_flags)
-{
- if (card->next){
- spin_unlock(&card->next->wandev.lock);
- }
- spin_unlock_irqrestore(&card->wandev.lock, *smp_flags);
-}
-
-
-
-/*===========================================================================
- * config_chdlc
- *
- * Configure the chdlc protocol and enable communications.
- *
- * The if_open() function binds this function to the poll routine.
- * Therefore, this function will run every time the chdlc interface
- * is brought up. We cannot run this function from the if_open
- * because if_open does not have access to the remote IP address.
- *
- * If the communications are not enabled, proceed to configure
- * the card and enable communications.
- *
- * If the communications are enabled, it means that the interface
- * was shutdown by ether the user or driver. In this case, we
- * have to check that the IP addresses have not changed. If
- * the IP addresses have changed, we have to reconfigure the firmware
- * and update the changed IP addresses. Otherwise, just exit.
- *
- */
-
-static int config_chdlc (sdla_t *card)
-{
- struct net_device *dev = card->wandev.dev;
- SHARED_MEMORY_INFO_STRUCT *flags = card->u.c.flags;
-
- if (card->u.c.comm_enabled){
- chdlc_comm_disable(card);
- port_set_state(card, WAN_DISCONNECTED);
- }
-
- if (set_chdlc_config(card)) {
- printk(KERN_INFO "%s: CHDLC Configuration Failed!\n",
- card->devname);
- return 0;
- }
- init_chdlc_tx_rx_buff(card, dev);
-
- /* Set interrupt mode and mask */
- if (chdlc_set_intr_mode(card, APP_INT_ON_RX_FRAME |
- APP_INT_ON_GLOBAL_EXCEP_COND |
- APP_INT_ON_TX_FRAME |
- APP_INT_ON_CHDLC_EXCEP_COND | APP_INT_ON_TIMER)){
- printk (KERN_INFO "%s: Failed to set interrupt triggers!\n",
- card->devname);
- return 0;
- }
-
-
- /* Mask the Transmit and Timer interrupt */
- flags->interrupt_info_struct.interrupt_permission &=
- ~(APP_INT_ON_TX_FRAME | APP_INT_ON_TIMER);
-
-
- if (chdlc_comm_enable(card) != 0) {
- printk(KERN_INFO "%s: Failed to enable chdlc communications!\n",
- card->devname);
- flags->interrupt_info_struct.interrupt_permission = 0;
- card->u.c.comm_enabled=0;
- chdlc_set_intr_mode(card,0);
- return 0;
- }
-
- /* Initialize Rx/Tx buffer control fields */
- port_set_state(card, WAN_CONNECTING);
- return 0;
-}
-
-
-static void send_ppp_term_request(struct net_device *dev)
-{
- struct sk_buff *new_skb;
- unsigned char *buf;
-
- if ((new_skb = dev_alloc_skb(8)) != NULL) {
- /* copy data into new_skb */
-
- buf = skb_put(new_skb, 8);
- sprintf(buf,"%c%c%c%c%c%c%c%c", 0xFF,0x03,0xC0,0x21,0x05,0x98,0x00,0x07);
-
- /* Decapsulate pkt and pass it up the protocol stack */
- new_skb->protocol = htons(ETH_P_WAN_PPP);
- new_skb->dev = dev;
- new_skb->mac.raw = new_skb->data;
-
- netif_rx(new_skb);
- dev->last_rx = jiffies;
- }
-}
-
-
-MODULE_LICENSE("GPL");
-
-/****** End ****************************************************************/
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-25 08:46:36 +0000