diff options
Diffstat (limited to 'drivers/net/ethernet/amd/depca.c')
| -rw-r--r-- | drivers/net/ethernet/amd/depca.c | 1910 |
1 files changed, 0 insertions, 1910 deletions
diff --git a/drivers/net/ethernet/amd/depca.c b/drivers/net/ethernet/amd/depca.c deleted file mode 100644 index 34a485363d5..00000000000 --- a/drivers/net/ethernet/amd/depca.c +++ /dev/null @@ -1,1910 +0,0 @@ -/* depca.c: A DIGITAL DEPCA & EtherWORKS ethernet driver for linux. - - Written 1994, 1995 by David C. Davies. - - - Copyright 1994 David C. Davies - and - United States Government - (as represented by the Director, National Security Agency). - - Copyright 1995 Digital Equipment Corporation. - - - This software may be used and distributed according to the terms of - the GNU General Public License, incorporated herein by reference. - - This driver is written for the Digital Equipment Corporation series - of DEPCA and EtherWORKS ethernet cards: - - DEPCA (the original) - DE100 - DE101 - DE200 Turbo - DE201 Turbo - DE202 Turbo (TP BNC) - DE210 - DE422 (EISA) - - The driver has been tested on DE100, DE200 and DE202 cards in a - relatively busy network. The DE422 has been tested a little. - - This driver will NOT work for the DE203, DE204 and DE205 series of - cards, since they have a new custom ASIC in place of the AMD LANCE - chip. See the 'ewrk3.c' driver in the Linux source tree for running - those cards. - - I have benchmarked the driver with a DE100 at 595kB/s to (542kB/s from) - a DECstation 5000/200. - - The author may be reached at davies@maniac.ultranet.com - - ========================================================================= - - The driver was originally based on the 'lance.c' driver from Donald - Becker which is included with the standard driver distribution for - linux. V0.4 is a complete re-write with only the kernel interface - remaining from the original code. - - 1) Lance.c code in /linux/drivers/net/ - 2) "Ethernet/IEEE 802.3 Family. 1992 World Network Data Book/Handbook", - AMD, 1992 [(800) 222-9323]. - 3) "Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE)", - AMD, Pub. #17881, May 1993. - 4) "Am79C960 PCnet-ISA(tm), Single-Chip Ethernet Controller for ISA", - AMD, Pub. #16907, May 1992 - 5) "DEC EtherWORKS LC Ethernet Controller Owners Manual", - Digital Equipment corporation, 1990, Pub. #EK-DE100-OM.003 - 6) "DEC EtherWORKS Turbo Ethernet Controller Owners Manual", - Digital Equipment corporation, 1990, Pub. #EK-DE200-OM.003 - 7) "DEPCA Hardware Reference Manual", Pub. #EK-DEPCA-PR - Digital Equipment Corporation, 1989 - 8) "DEC EtherWORKS Turbo_(TP BNC) Ethernet Controller Owners Manual", - Digital Equipment corporation, 1991, Pub. #EK-DE202-OM.001 - - - Peter Bauer's depca.c (V0.5) was referred to when debugging V0.1 of this - driver. - - The original DEPCA card requires that the ethernet ROM address counter - be enabled to count and has an 8 bit NICSR. The ROM counter enabling is - only done when a 0x08 is read as the first address octet (to minimise - the chances of writing over some other hardware's I/O register). The - NICSR accesses have been changed to byte accesses for all the cards - supported by this driver, since there is only one useful bit in the MSB - (remote boot timeout) and it is not used. Also, there is a maximum of - only 48kB network RAM for this card. My thanks to Torbjorn Lindh for - help debugging all this (and holding my feet to the fire until I got it - right). - - The DE200 series boards have on-board 64kB RAM for use as a shared - memory network buffer. Only the DE100 cards make use of a 2kB buffer - mode which has not been implemented in this driver (only the 32kB and - 64kB modes are supported [16kB/48kB for the original DEPCA]). - - At the most only 2 DEPCA cards can be supported on the ISA bus because - there is only provision for two I/O base addresses on each card (0x300 - and 0x200). The I/O address is detected by searching for a byte sequence - in the Ethernet station address PROM at the expected I/O address for the - Ethernet PROM. The shared memory base address is 'autoprobed' by - looking for the self test PROM and detecting the card name. When a - second DEPCA is detected, information is placed in the base_addr - variable of the next device structure (which is created if necessary), - thus enabling ethif_probe initialization for the device. More than 2 - EISA cards can be supported, but care will be needed assigning the - shared memory to ensure that each slot has the correct IRQ, I/O address - and shared memory address assigned. - - ************************************************************************ - - NOTE: If you are using two ISA DEPCAs, it is important that you assign - the base memory addresses correctly. The driver autoprobes I/O 0x300 - then 0x200. The base memory address for the first device must be less - than that of the second so that the auto probe will correctly assign the - I/O and memory addresses on the same card. I can't think of a way to do - this unambiguously at the moment, since there is nothing on the cards to - tie I/O and memory information together. - - I am unable to test 2 cards together for now, so this code is - unchecked. All reports, good or bad, are welcome. - - ************************************************************************ - - The board IRQ setting must be at an unused IRQ which is auto-probed - using Donald Becker's autoprobe routines. DEPCA and DE100 board IRQs are - {2,3,4,5,7}, whereas the DE200 is at {5,9,10,11,15}. Note that IRQ2 is - really IRQ9 in machines with 16 IRQ lines. - - No 16MB memory limitation should exist with this driver as DMA is not - used and the common memory area is in low memory on the network card (my - current system has 20MB and I've not had problems yet). - - The ability to load this driver as a loadable module has been added. To - utilise this ability, you have to do <8 things: - - 0) have a copy of the loadable modules code installed on your system. - 1) copy depca.c from the /linux/drivers/net directory to your favourite - temporary directory. - 2) if you wish, edit the source code near line 1530 to reflect the I/O - address and IRQ you're using (see also 5). - 3) compile depca.c, but include -DMODULE in the command line to ensure - that the correct bits are compiled (see end of source code). - 4) if you are wanting to add a new card, goto 5. Otherwise, recompile a - kernel with the depca configuration turned off and reboot. - 5) insmod depca.o [irq=7] [io=0x200] [mem=0xd0000] [adapter_name=DE100] - [Alan Cox: Changed the code to allow command line irq/io assignments] - [Dave Davies: Changed the code to allow command line mem/name - assignments] - 6) run the net startup bits for your eth?? interface manually - (usually /etc/rc.inet[12] at boot time). - 7) enjoy! - - Note that autoprobing is not allowed in loadable modules - the system is - already up and running and you're messing with interrupts. - - To unload a module, turn off the associated interface - 'ifconfig eth?? down' then 'rmmod depca'. - - To assign a base memory address for the shared memory when running as a - loadable module, see 5 above. To include the adapter name (if you have - no PROM but know the card name) also see 5 above. Note that this last - option will not work with kernel built-in depca's. - - The shared memory assignment for a loadable module makes sense to avoid - the 'memory autoprobe' picking the wrong shared memory (for the case of - 2 depca's in a PC). - - ************************************************************************ - Support for MCA EtherWORKS cards added 11-3-98. (MCA since deleted) - Verified to work with up to 2 DE212 cards in a system (although not - fully stress-tested). - - Revision History - ---------------- - - Version Date Description - - 0.1 25-jan-94 Initial writing. - 0.2 27-jan-94 Added LANCE TX hardware buffer chaining. - 0.3 1-feb-94 Added multiple DEPCA support. - 0.31 4-feb-94 Added DE202 recognition. - 0.32 19-feb-94 Tidy up. Improve multi-DEPCA support. - 0.33 25-feb-94 Fix DEPCA ethernet ROM counter enable. - Add jabber packet fix from murf@perftech.com - and becker@super.org - 0.34 7-mar-94 Fix DEPCA max network memory RAM & NICSR access. - 0.35 8-mar-94 Added DE201 recognition. Tidied up. - 0.351 30-apr-94 Added EISA support. Added DE422 recognition. - 0.36 16-may-94 DE422 fix released. - 0.37 22-jul-94 Added MODULE support - 0.38 15-aug-94 Added DBR ROM switch in depca_close(). - Multi DEPCA bug fix. - 0.38axp 15-sep-94 Special version for Alpha AXP Linux V1.0. - 0.381 12-dec-94 Added DE101 recognition, fix multicast bug. - 0.382 9-feb-95 Fix recognition bug reported by <bkm@star.rl.ac.uk>. - 0.383 22-feb-95 Fix for conflict with VESA SCSI reported by - <stromain@alf.dec.com> - 0.384 17-mar-95 Fix a ring full bug reported by <bkm@star.rl.ac.uk> - 0.385 3-apr-95 Fix a recognition bug reported by - <ryan.niemi@lastfrontier.com> - 0.386 21-apr-95 Fix the last fix...sorry, must be galloping senility - 0.40 25-May-95 Rewrite for portability & updated. - ALPHA support from <jestabro@amt.tay1.dec.com> - 0.41 26-Jun-95 Added verify_area() calls in depca_ioctl() from - suggestion by <heiko@colossus.escape.de> - 0.42 27-Dec-95 Add 'mem' shared memory assignment for loadable - modules. - Add 'adapter_name' for loadable modules when no PROM. - Both above from a suggestion by - <pchen@woodruffs121.residence.gatech.edu>. - Add new multicasting code. - 0.421 22-Apr-96 Fix alloc_device() bug <jari@markkus2.fimr.fi> - 0.422 29-Apr-96 Fix depca_hw_init() bug <jari@markkus2.fimr.fi> - 0.423 7-Jun-96 Fix module load bug <kmg@barco.be> - 0.43 16-Aug-96 Update alloc_device() to conform to de4x5.c - 0.44 1-Sep-97 Fix *_probe() to test check_region() first - bug - reported by <mmogilvi@elbert.uccs.edu> - 0.45 3-Nov-98 Added support for MCA EtherWORKS (DE210/DE212) cards - by <tymm@computer.org> - 0.451 5-Nov-98 Fixed mca stuff cuz I'm a dummy. <tymm@computer.org> - 0.5 14-Nov-98 Re-spin for 2.1.x kernels. - 0.51 27-Jun-99 Correct received packet length for CRC from - report by <worm@dkik.dk> - 0.52 16-Oct-00 Fixes for 2.3 io memory accesses - Fix show-stopper (ints left masked) in depca_interrupt - by <peterd@pnd-pc.demon.co.uk> - 0.53 12-Jan-01 Release resources on failure, bss tidbits - by acme@conectiva.com.br - 0.54 08-Nov-01 use library crc32 functions - by Matt_Domsch@dell.com - 0.55 01-Mar-03 Use EISA/sysfs framework <maz@wild-wind.fr.eu.org> - - ========================================================================= -*/ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/crc32.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/time.h> -#include <linux/types.h> -#include <linux/unistd.h> -#include <linux/ctype.h> -#include <linux/moduleparam.h> -#include <linux/platform_device.h> -#include <linux/bitops.h> - -#include <asm/uaccess.h> -#include <asm/io.h> -#include <asm/dma.h> - -#ifdef CONFIG_EISA -#include <linux/eisa.h> -#endif - -#include "depca.h" - -static char version[] __initdata = "depca.c:v0.53 2001/1/12 davies@maniac.ultranet.com\n"; - -#ifdef DEPCA_DEBUG -static int depca_debug = DEPCA_DEBUG; -#else -static int depca_debug = 1; -#endif - -#define DEPCA_NDA 0xffe0 /* No Device Address */ - -#define TX_TIMEOUT (1*HZ) - -/* -** Ethernet PROM defines -*/ -#define PROBE_LENGTH 32 -#define ETH_PROM_SIG 0xAA5500FFUL - -/* -** Set the number of Tx and Rx buffers. Ensure that the memory requested -** here is <= to the amount of shared memory set up by the board switches. -** The number of descriptors MUST BE A POWER OF 2. -** -** total_memory = NUM_RX_DESC*(8+RX_BUFF_SZ) + NUM_TX_DESC*(8+TX_BUFF_SZ) -*/ -#define NUM_RX_DESC 8 /* Number of RX descriptors */ -#define NUM_TX_DESC 8 /* Number of TX descriptors */ -#define RX_BUFF_SZ 1536 /* Buffer size for each Rx buffer */ -#define TX_BUFF_SZ 1536 /* Buffer size for each Tx buffer */ - -/* -** EISA bus defines -*/ -#define DEPCA_EISA_IO_PORTS 0x0c00 /* I/O port base address, slot 0 */ - -/* -** ISA Bus defines -*/ -#define DEPCA_RAM_BASE_ADDRESSES {0xc0000,0xd0000,0xe0000,0x00000} -#define DEPCA_TOTAL_SIZE 0x10 - -static struct { - u_long iobase; - struct platform_device *device; -} depca_io_ports[] = { - { 0x300, NULL }, - { 0x200, NULL }, - { 0 , NULL }, -}; - -/* -** Name <-> Adapter mapping -*/ -#define DEPCA_SIGNATURE {"DEPCA",\ - "DE100","DE101",\ - "DE200","DE201","DE202",\ - "DE210","DE212",\ - "DE422",\ - ""} - -static char* __initdata depca_signature[] = DEPCA_SIGNATURE; - -enum depca_type { - DEPCA, de100, de101, de200, de201, de202, de210, de212, de422, unknown -}; - -static char depca_string[] = "depca"; - -static int depca_device_remove (struct device *device); - -#ifdef CONFIG_EISA -static struct eisa_device_id depca_eisa_ids[] = { - { "DEC4220", de422 }, - { "" } -}; -MODULE_DEVICE_TABLE(eisa, depca_eisa_ids); - -static int depca_eisa_probe (struct device *device); - -static struct eisa_driver depca_eisa_driver = { - .id_table = depca_eisa_ids, - .driver = { - .name = depca_string, - .probe = depca_eisa_probe, - .remove = depca_device_remove - } -}; -#endif - -static int depca_isa_probe (struct platform_device *); - -static int depca_isa_remove(struct platform_device *pdev) -{ - return depca_device_remove(&pdev->dev); -} - -static struct platform_driver depca_isa_driver = { - .probe = depca_isa_probe, - .remove = depca_isa_remove, - .driver = { - .name = depca_string, - }, -}; - -/* -** Miscellaneous info... -*/ -#define DEPCA_STRLEN 16 - -/* -** Memory Alignment. Each descriptor is 4 longwords long. To force a -** particular alignment on the TX descriptor, adjust DESC_SKIP_LEN and -** DESC_ALIGN. DEPCA_ALIGN aligns the start address of the private memory area -** and hence the RX descriptor ring's first entry. -*/ -#define DEPCA_ALIGN4 ((u_long)4 - 1) /* 1 longword align */ -#define DEPCA_ALIGN8 ((u_long)8 - 1) /* 2 longword (quadword) align */ -#define DEPCA_ALIGN DEPCA_ALIGN8 /* Keep the LANCE happy... */ - -/* -** The DEPCA Rx and Tx ring descriptors. -*/ -struct depca_rx_desc { - volatile s32 base; - s16 buf_length; /* This length is negative 2's complement! */ - s16 msg_length; /* This length is "normal". */ -}; - -struct depca_tx_desc { - volatile s32 base; - s16 length; /* This length is negative 2's complement! */ - s16 misc; /* Errors and TDR info */ -}; - -#define LA_MASK 0x0000ffff /* LANCE address mask for mapping network RAM - to LANCE memory address space */ - -/* -** The Lance initialization block, described in databook, in common memory. -*/ -struct depca_init { - u16 mode; /* Mode register */ - u8 phys_addr[ETH_ALEN]; /* Physical ethernet address */ - u8 mcast_table[8]; /* Multicast Hash Table. */ - u32 rx_ring; /* Rx ring base pointer & ring length */ - u32 tx_ring; /* Tx ring base pointer & ring length */ -}; - -#define DEPCA_PKT_STAT_SZ 16 -#define DEPCA_PKT_BIN_SZ 128 /* Should be >=100 unless you - increase DEPCA_PKT_STAT_SZ */ -struct depca_private { - char adapter_name[DEPCA_STRLEN]; /* /proc/ioports string */ - enum depca_type adapter; /* Adapter type */ - enum { - DEPCA_BUS_ISA = 1, - DEPCA_BUS_EISA, - } depca_bus; /* type of bus */ - struct depca_init init_block; /* Shadow Initialization block */ -/* CPU address space fields */ - struct depca_rx_desc __iomem *rx_ring; /* Pointer to start of RX descriptor ring */ - struct depca_tx_desc __iomem *tx_ring; /* Pointer to start of TX descriptor ring */ - void __iomem *rx_buff[NUM_RX_DESC]; /* CPU virt address of sh'd memory buffs */ - void __iomem *tx_buff[NUM_TX_DESC]; /* CPU virt address of sh'd memory buffs */ - void __iomem *sh_mem; /* CPU mapped virt address of device RAM */ - u_long mem_start; /* Bus address of device RAM (before remap) */ - u_long mem_len; /* device memory size */ -/* Device address space fields */ - u_long device_ram_start; /* Start of RAM in device addr space */ -/* Offsets used in both address spaces */ - u_long rx_ring_offset; /* Offset from start of RAM to rx_ring */ - u_long tx_ring_offset; /* Offset from start of RAM to tx_ring */ - u_long buffs_offset; /* LANCE Rx and Tx buffers start address. */ -/* Kernel-only (not device) fields */ - int rx_new, tx_new; /* The next free ring entry */ - int rx_old, tx_old; /* The ring entries to be free()ed. */ - spinlock_t lock; - struct { /* Private stats counters */ - u32 bins[DEPCA_PKT_STAT_SZ]; - u32 unicast; - u32 multicast; - u32 broadcast; - u32 excessive_collisions; - u32 tx_underruns; - u32 excessive_underruns; - } pktStats; - int txRingMask; /* TX ring mask */ - int rxRingMask; /* RX ring mask */ - s32 rx_rlen; /* log2(rxRingMask+1) for the descriptors */ - s32 tx_rlen; /* log2(txRingMask+1) for the descriptors */ -}; - -/* -** The transmit ring full condition is described by the tx_old and tx_new -** pointers by: -** tx_old = tx_new Empty ring -** tx_old = tx_new+1 Full ring -** tx_old+txRingMask = tx_new Full ring (wrapped condition) -*/ -#define TX_BUFFS_AVAIL ((lp->tx_old<=lp->tx_new)?\ - lp->tx_old+lp->txRingMask-lp->tx_new:\ - lp->tx_old -lp->tx_new-1) - -/* -** Public Functions -*/ -static int depca_open(struct net_device *dev); -static netdev_tx_t depca_start_xmit(struct sk_buff *skb, - struct net_device *dev); -static irqreturn_t depca_interrupt(int irq, void *dev_id); -static int depca_close(struct net_device *dev); -static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); -static void depca_tx_timeout(struct net_device *dev); -static void set_multicast_list(struct net_device *dev); - -/* -** Private functions -*/ -static void depca_init_ring(struct net_device *dev); -static int depca_rx(struct net_device *dev); -static int depca_tx(struct net_device *dev); - -static void LoadCSRs(struct net_device *dev); -static int InitRestartDepca(struct net_device *dev); -static int DepcaSignature(char *name, u_long paddr); -static int DevicePresent(u_long ioaddr); -static int get_hw_addr(struct net_device *dev); -static void SetMulticastFilter(struct net_device *dev); -static int load_packet(struct net_device *dev, struct sk_buff *skb); -static void depca_dbg_open(struct net_device *dev); - -static u_char de1xx_irq[] __initdata = { 2, 3, 4, 5, 7, 9, 0 }; -static u_char de2xx_irq[] __initdata = { 5, 9, 10, 11, 15, 0 }; -static u_char de422_irq[] __initdata = { 5, 9, 10, 11, 0 }; -static u_char *depca_irq; - -static int irq; -static int io; -static char *adapter_name; -static int mem; /* For loadable module assignment - use insmod mem=0x????? .... */ -module_param (irq, int, 0); -module_param (io, int, 0); -module_param (adapter_name, charp, 0); -module_param (mem, int, 0); -MODULE_PARM_DESC(irq, "DEPCA IRQ number"); -MODULE_PARM_DESC(io, "DEPCA I/O base address"); -MODULE_PARM_DESC(adapter_name, "DEPCA adapter name"); -MODULE_PARM_DESC(mem, "DEPCA shared memory address"); -MODULE_LICENSE("GPL"); - -/* -** Miscellaneous defines... -*/ -#define STOP_DEPCA \ - outw(CSR0, DEPCA_ADDR);\ - outw(STOP, DEPCA_DATA) - -static const struct net_device_ops depca_netdev_ops = { - .ndo_open = depca_open, - .ndo_start_xmit = depca_start_xmit, - .ndo_stop = depca_close, - .ndo_set_rx_mode = set_multicast_list, - .ndo_do_ioctl = depca_ioctl, - .ndo_tx_timeout = depca_tx_timeout, - .ndo_change_mtu = eth_change_mtu, - .ndo_set_mac_address = eth_mac_addr, - .ndo_validate_addr = eth_validate_addr, -}; - -static int __init depca_hw_init (struct net_device *dev, struct device *device) -{ - struct depca_private *lp; - int i, j, offset, netRAM, mem_len, status = 0; - s16 nicsr; - u_long ioaddr; - u_long mem_start; - - /* - * We are now supposed to enter this function with the - * following fields filled with proper values : - * - * dev->base_addr - * lp->mem_start - * lp->depca_bus - * lp->adapter - * - * dev->irq can be set if known from device configuration (on - * MCA or EISA) or module option. Otherwise, it will be auto - * detected. - */ - - ioaddr = dev->base_addr; - - STOP_DEPCA; - - nicsr = inb(DEPCA_NICSR); - nicsr = ((nicsr & ~SHE & ~RBE & ~IEN) | IM); - outb(nicsr, DEPCA_NICSR); - - if (inw(DEPCA_DATA) != STOP) { - return -ENXIO; - } - - lp = netdev_priv(dev); - mem_start = lp->mem_start; - - if (!mem_start || lp->adapter < DEPCA || lp->adapter >=unknown) - return -ENXIO; - - printk("%s: %s at 0x%04lx", - dev_name(device), depca_signature[lp->adapter], ioaddr); - - switch (lp->depca_bus) { -#ifdef CONFIG_EISA - case DEPCA_BUS_EISA: - printk(" (EISA slot %d)", to_eisa_device(device)->slot); - break; -#endif - - case DEPCA_BUS_ISA: - break; - - default: - printk("Unknown DEPCA bus %d\n", lp->depca_bus); - return -ENXIO; - } - - printk(", h/w address "); - status = get_hw_addr(dev); - printk("%pM", dev->dev_addr); - if (status != 0) { - printk(" which has an Ethernet PROM CRC error.\n"); - return -ENXIO; - } - - /* Set up the maximum amount of network RAM(kB) */ - netRAM = ((lp->adapter != DEPCA) ? 64 : 48); - if ((nicsr & _128KB) && (lp->adapter == de422)) - netRAM = 128; - - /* Shared Memory Base Address */ - if (nicsr & BUF) { - nicsr &= ~BS; /* DEPCA RAM in top 32k */ - netRAM -= 32; - mem_start += 0x8000; - } - - if ((mem_len = (NUM_RX_DESC * (sizeof(struct depca_rx_desc) + RX_BUFF_SZ) + NUM_TX_DESC * (sizeof(struct depca_tx_desc) + TX_BUFF_SZ) + sizeof(struct depca_init))) - > (netRAM << 10)) { - printk(",\n requests %dkB RAM: only %dkB is available!\n", (mem_len >> 10), netRAM); - return -ENXIO; - } - - printk(",\n has %dkB RAM at 0x%.5lx", netRAM, mem_start); - - /* Enable the shadow RAM. */ - if (lp->adapter != DEPCA) { - nicsr |= SHE; - outb(nicsr, DEPCA_NICSR); - } - - spin_lock_init(&lp->lock); - sprintf(lp->adapter_name, "%s (%s)", - depca_signature[lp->adapter], dev_name(device)); - status = -EBUSY; - - /* Initialisation Block */ - if (!request_mem_region (mem_start, mem_len, lp->adapter_name)) { - printk(KERN_ERR "depca: cannot request ISA memory, aborting\n"); - goto out_priv; - } - - status = -EIO; - lp->sh_mem = ioremap(mem_start, mem_len); - if (lp->sh_mem == NULL) { - printk(KERN_ERR "depca: cannot remap ISA memory, aborting\n"); - goto out1; - } - - lp->mem_start = mem_start; - lp->mem_len = mem_len; - lp->device_ram_start = mem_start & LA_MASK; - - offset = 0; - offset += sizeof(struct depca_init); - - /* Tx & Rx descriptors (aligned to a quadword boundary) */ - offset = (offset + DEPCA_ALIGN) & ~DEPCA_ALIGN; - lp->rx_ring = lp->sh_mem + offset; - lp->rx_ring_offset = offset; - - offset += (sizeof(struct depca_rx_desc) * NUM_RX_DESC); - lp->tx_ring = lp->sh_mem + offset; - lp->tx_ring_offset = offset; - - offset += (sizeof(struct depca_tx_desc) * NUM_TX_DESC); - - lp->buffs_offset = offset; - - /* Finish initialising the ring information. */ - lp->rxRingMask = NUM_RX_DESC - 1; - lp->txRingMask = NUM_TX_DESC - 1; - - /* Calculate Tx/Rx RLEN size for the descriptors. */ - for (i = 0, j = lp->rxRingMask; j > 0; i++) { - j >>= 1; - } - lp->rx_rlen = (s32) (i << 29); - for (i = 0, j = lp->txRingMask; j > 0; i++) { - j >>= 1; - } - lp->tx_rlen = (s32) (i << 29); - - /* Load the initialisation block */ - depca_init_ring(dev); - - /* Initialise the control and status registers */ - LoadCSRs(dev); - - /* Enable DEPCA board interrupts for autoprobing */ - nicsr = ((nicsr & ~IM) | IEN); - outb(nicsr, DEPCA_NICSR); - - /* To auto-IRQ we enable the initialization-done and DMA err, - interrupts. For now we will always get a DMA error. */ - if (dev->irq < 2) { - unsigned char irqnum; - unsigned long irq_mask, delay; - - irq_mask = probe_irq_on(); - - /* Assign the correct irq list */ - switch (lp->adapter) { - case DEPCA: - case de100: - case de101: - depca_irq = de1xx_irq; - break; - case de200: - case de201: - case de202: - case de210: - case de212: - depca_irq = de2xx_irq; - break; - case de422: - depca_irq = de422_irq; - break; - - default: - break; /* Not reached */ - } - - /* Trigger an initialization just for the interrupt. */ - outw(INEA | INIT, DEPCA_DATA); - - delay = jiffies + HZ/50; - while (time_before(jiffies, delay)) - yield(); - - irqnum = probe_irq_off(irq_mask); - - status = -ENXIO; - if (!irqnum) { - printk(" and failed to detect IRQ line.\n"); - goto out2; - } else { - for (dev->irq = 0, i = 0; (depca_irq[i]) && (!dev->irq); i++) - if (irqnum == depca_irq[i]) { - dev->irq = irqnum; - printk(" and uses IRQ%d.\n", dev->irq); - } - - if (!dev->irq) { - printk(" but incorrect IRQ line detected.\n"); - goto out2; - } - } - } else { - printk(" and assigned IRQ%d.\n", dev->irq); - } - - if (depca_debug > 1) { - printk(version); - } - - /* The DEPCA-specific entries in the device structure. */ - dev->netdev_ops = &depca_netdev_ops; - dev->watchdog_timeo = TX_TIMEOUT; - - dev->mem_start = 0; - - dev_set_drvdata(device, dev); - SET_NETDEV_DEV (dev, device); - - status = register_netdev(dev); - if (status == 0) - return 0; -out2: - iounmap(lp->sh_mem); -out1: - release_mem_region (mem_start, mem_len); -out_priv: - return status; -} - - -static int depca_open(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - s16 nicsr; - int status = 0; - - STOP_DEPCA; - nicsr = inb(DEPCA_NICSR); - - /* Make sure the shadow RAM is enabled */ - if (lp->adapter != DEPCA) { - nicsr |= SHE; - outb(nicsr, DEPCA_NICSR); - } - - /* Re-initialize the DEPCA... */ - depca_init_ring(dev); - LoadCSRs(dev); - - depca_dbg_open(dev); - - if (request_irq(dev->irq, depca_interrupt, 0, lp->adapter_name, dev)) { - printk("depca_open(): Requested IRQ%d is busy\n", dev->irq); - status = -EAGAIN; - } else { - - /* Enable DEPCA board interrupts and turn off LED */ - nicsr = ((nicsr & ~IM & ~LED) | IEN); - outb(nicsr, DEPCA_NICSR); - outw(CSR0, DEPCA_ADDR); - - netif_start_queue(dev); - - status = InitRestartDepca(dev); - - if (depca_debug > 1) { - printk("CSR0: 0x%4.4x\n", inw(DEPCA_DATA)); - printk("nicsr: 0x%02x\n", inb(DEPCA_NICSR)); - } - } - return status; -} - -/* Initialize the lance Rx and Tx descriptor rings. */ -static void depca_init_ring(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_int i; - u_long offset; - - /* Lock out other processes whilst setting up the hardware */ - netif_stop_queue(dev); - - lp->rx_new = lp->tx_new = 0; - lp->rx_old = lp->tx_old = 0; - - /* Initialize the base address and length of each buffer in the ring */ - for (i = 0; i <= lp->rxRingMask; i++) { - offset = lp->buffs_offset + i * RX_BUFF_SZ; - writel((lp->device_ram_start + offset) | R_OWN, &lp->rx_ring[i].base); - writew(-RX_BUFF_SZ, &lp->rx_ring[i].buf_length); - lp->rx_buff[i] = lp->sh_mem + offset; - } - - for (i = 0; i <= lp->txRingMask; i++) { - offset = lp->buffs_offset + (i + lp->rxRingMask + 1) * TX_BUFF_SZ; - writel((lp->device_ram_start + offset) & 0x00ffffff, &lp->tx_ring[i].base); - lp->tx_buff[i] = lp->sh_mem + offset; - } - - /* Set up the initialization block */ - lp->init_block.rx_ring = (lp->device_ram_start + lp->rx_ring_offset) | lp->rx_rlen; - lp->init_block.tx_ring = (lp->device_ram_start + lp->tx_ring_offset) | lp->tx_rlen; - - SetMulticastFilter(dev); - - for (i = 0; i < ETH_ALEN; i++) { - lp->init_block.phys_addr[i] = dev->dev_addr[i]; - } - - lp->init_block.mode = 0x0000; /* Enable the Tx and Rx */ -} - - -static void depca_tx_timeout(struct net_device *dev) -{ - u_long ioaddr = dev->base_addr; - - printk("%s: transmit timed out, status %04x, resetting.\n", dev->name, inw(DEPCA_DATA)); - - STOP_DEPCA; - depca_init_ring(dev); - LoadCSRs(dev); - dev->trans_start = jiffies; /* prevent tx timeout */ - netif_wake_queue(dev); - InitRestartDepca(dev); -} - - -/* -** Writes a socket buffer to TX descriptor ring and starts transmission -*/ -static netdev_tx_t depca_start_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - int status = 0; - - /* Transmitter timeout, serious problems. */ - if (skb->len < 1) - goto out; - - if (skb_padto(skb, ETH_ZLEN)) - goto out; - - netif_stop_queue(dev); - - if (TX_BUFFS_AVAIL) { /* Fill in a Tx ring entry */ - status = load_packet(dev, skb); - - if (!status) { - /* Trigger an immediate send demand. */ - outw(CSR0, DEPCA_ADDR); - outw(INEA | TDMD, DEPCA_DATA); - - dev_kfree_skb(skb); - } - if (TX_BUFFS_AVAIL) - netif_start_queue(dev); - } else - status = NETDEV_TX_LOCKED; - - out: - return status; -} - -/* -** The DEPCA interrupt handler. -*/ -static irqreturn_t depca_interrupt(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - struct depca_private *lp; - s16 csr0, nicsr; - u_long ioaddr; - - if (dev == NULL) { - printk("depca_interrupt(): irq %d for unknown device.\n", irq); - return IRQ_NONE; - } - - lp = netdev_priv(dev); - ioaddr = dev->base_addr; - - spin_lock(&lp->lock); - - /* mask the DEPCA board interrupts and turn on the LED */ - nicsr = inb(DEPCA_NICSR); - nicsr |= (IM | LED); - outb(nicsr, DEPCA_NICSR); - - outw(CSR0, DEPCA_ADDR); - csr0 = inw(DEPCA_DATA); - - /* Acknowledge all of the current interrupt sources ASAP. */ - outw(csr0 & INTE, DEPCA_DATA); - - if (csr0 & RINT) /* Rx interrupt (packet arrived) */ - depca_rx(dev); - - if (csr0 & TINT) /* Tx interrupt (packet sent) */ - depca_tx(dev); - - /* Any resources available? */ - if ((TX_BUFFS_AVAIL >= 0) && netif_queue_stopped(dev)) { - netif_wake_queue(dev); - } - - /* Unmask the DEPCA board interrupts and turn off the LED */ - nicsr = (nicsr & ~IM & ~LED); - outb(nicsr, DEPCA_NICSR); - - spin_unlock(&lp->lock); - return IRQ_HANDLED; -} - -/* Called with lp->lock held */ -static int depca_rx(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - int i, entry; - s32 status; - - for (entry = lp->rx_new; !(readl(&lp->rx_ring[entry].base) & R_OWN); entry = lp->rx_new) { - status = readl(&lp->rx_ring[entry].base) >> 16; - if (status & R_STP) { /* Remember start of frame */ - lp->rx_old = entry; - } - if (status & R_ENP) { /* Valid frame status */ - if (status & R_ERR) { /* There was an error. */ - dev->stats.rx_errors++; /* Update the error stats. */ - if (status & R_FRAM) - dev->stats.rx_frame_errors++; - if (status & R_OFLO) - dev->stats.rx_over_errors++; - if (status & R_CRC) - dev->stats.rx_crc_errors++; - if (status & R_BUFF) - dev->stats.rx_fifo_errors++; - } else { - short len, pkt_len = readw(&lp->rx_ring[entry].msg_length) - 4; - struct sk_buff *skb; - - skb = netdev_alloc_skb(dev, pkt_len + 2); - if (skb != NULL) { - unsigned char *buf; - skb_reserve(skb, 2); /* 16 byte align the IP header */ - buf = skb_put(skb, pkt_len); - if (entry < lp->rx_old) { /* Wrapped buffer */ - len = (lp->rxRingMask - lp->rx_old + 1) * RX_BUFF_SZ; - memcpy_fromio(buf, lp->rx_buff[lp->rx_old], len); - memcpy_fromio(buf + len, lp->rx_buff[0], pkt_len - len); - } else { /* Linear buffer */ - memcpy_fromio(buf, lp->rx_buff[lp->rx_old], pkt_len); - } - - /* - ** Notify the upper protocol layers that there is another - ** packet to handle - */ - skb->protocol = eth_type_trans(skb, dev); - netif_rx(skb); - - /* - ** Update stats - */ - dev->stats.rx_packets++; - dev->stats.rx_bytes += pkt_len; - for (i = 1; i < DEPCA_PKT_STAT_SZ - 1; i++) { - if (pkt_len < (i * DEPCA_PKT_BIN_SZ)) { - lp->pktStats.bins[i]++; - i = DEPCA_PKT_STAT_SZ; - } - } - if (is_multicast_ether_addr(buf)) { - if (is_broadcast_ether_addr(buf)) { - lp->pktStats.broadcast++; - } else { - lp->pktStats.multicast++; - } - } else if (ether_addr_equal(buf, - dev->dev_addr)) { - lp->pktStats.unicast++; - } - - lp->pktStats.bins[0]++; /* Duplicates stats.rx_packets */ - if (lp->pktStats.bins[0] == 0) { /* Reset counters */ - memset((char *) &lp->pktStats, 0, sizeof(lp->pktStats)); - } - } else { - printk("%s: Memory squeeze, deferring packet.\n", dev->name); - dev->stats.rx_dropped++; /* Really, deferred. */ - break; - } - } - /* Change buffer ownership for this last frame, back to the adapter */ - for (; lp->rx_old != entry; lp->rx_old = (lp->rx_old + 1) & lp->rxRingMask) { - writel(readl(&lp->rx_ring[lp->rx_old].base) | R_OWN, &lp->rx_ring[lp->rx_old].base); - } - writel(readl(&lp->rx_ring[entry].base) | R_OWN, &lp->rx_ring[entry].base); - } - - /* - ** Update entry information - */ - lp->rx_new = (lp->rx_new + 1) & lp->rxRingMask; - } - - return 0; -} - -/* -** Buffer sent - check for buffer errors. -** Called with lp->lock held -*/ -static int depca_tx(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - int entry; - s32 status; - u_long ioaddr = dev->base_addr; - - for (entry = lp->tx_old; entry != lp->tx_new; entry = lp->tx_old) { - status = readl(&lp->tx_ring[entry].base) >> 16; - - if (status < 0) { /* Packet not yet sent! */ - break; - } else if (status & T_ERR) { /* An error occurred. */ - status = readl(&lp->tx_ring[entry].misc); - dev->stats.tx_errors++; - if (status & TMD3_RTRY) - dev->stats.tx_aborted_errors++; - if (status & TMD3_LCAR) - dev->stats.tx_carrier_errors++; - if (status & TMD3_LCOL) - dev->stats.tx_window_errors++; - if (status & TMD3_UFLO) - dev->stats.tx_fifo_errors++; - if (status & (TMD3_BUFF | TMD3_UFLO)) { - /* Trigger an immediate send demand. */ - outw(CSR0, DEPCA_ADDR); - outw(INEA | TDMD, DEPCA_DATA); - } - } else if (status & (T_MORE | T_ONE)) { - dev->stats.collisions++; - } else { - dev->stats.tx_packets++; - } - - /* Update all the pointers */ - lp->tx_old = (lp->tx_old + 1) & lp->txRingMask; - } - - return 0; -} - -static int depca_close(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - s16 nicsr; - u_long ioaddr = dev->base_addr; - - netif_stop_queue(dev); - - outw(CSR0, DEPCA_ADDR); - - if (depca_debug > 1) { - printk("%s: Shutting down ethercard, status was %2.2x.\n", dev->name, inw(DEPCA_DATA)); - } - - /* - ** We stop the DEPCA here -- it occasionally polls - ** memory if we don't. - */ - outw(STOP, DEPCA_DATA); - - /* - ** Give back the ROM in case the user wants to go to DOS - */ - if (lp->adapter != DEPCA) { - nicsr = inb(DEPCA_NICSR); - nicsr &= ~SHE; - outb(nicsr, DEPCA_NICSR); - } - - /* - ** Free the associated irq - */ - free_irq(dev->irq, dev); - return 0; -} - -static void LoadCSRs(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - - outw(CSR1, DEPCA_ADDR); /* initialisation block address LSW */ - outw((u16) lp->device_ram_start, DEPCA_DATA); - outw(CSR2, DEPCA_ADDR); /* initialisation block address MSW */ - outw((u16) (lp->device_ram_start >> 16), DEPCA_DATA); - outw(CSR3, DEPCA_ADDR); /* ALE control */ - outw(ACON, DEPCA_DATA); - - outw(CSR0, DEPCA_ADDR); /* Point back to CSR0 */ -} - -static int InitRestartDepca(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - int i, status = 0; - - /* Copy the shadow init_block to shared memory */ - memcpy_toio(lp->sh_mem, &lp->init_block, sizeof(struct depca_init)); - - outw(CSR0, DEPCA_ADDR); /* point back to CSR0 */ - outw(INIT, DEPCA_DATA); /* initialize DEPCA */ - - /* wait for lance to complete initialisation */ - for (i = 0; (i < 100) && !(inw(DEPCA_DATA) & IDON); i++); - - if (i != 100) { - /* clear IDON by writing a "1", enable interrupts and start lance */ - outw(IDON | INEA | STRT, DEPCA_DATA); - if (depca_debug > 2) { - printk("%s: DEPCA open after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); - } - } else { - printk("%s: DEPCA unopen after %d ticks, init block 0x%08lx csr0 %4.4x.\n", dev->name, i, lp->mem_start, inw(DEPCA_DATA)); - status = -1; - } - - return status; -} - -/* -** Set or clear the multicast filter for this adaptor. -*/ -static void set_multicast_list(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - - netif_stop_queue(dev); - while (lp->tx_old != lp->tx_new); /* Wait for the ring to empty */ - - STOP_DEPCA; /* Temporarily stop the depca. */ - depca_init_ring(dev); /* Initialize the descriptor rings */ - - if (dev->flags & IFF_PROMISC) { /* Set promiscuous mode */ - lp->init_block.mode |= PROM; - } else { - SetMulticastFilter(dev); - lp->init_block.mode &= ~PROM; /* Unset promiscuous mode */ - } - - LoadCSRs(dev); /* Reload CSR3 */ - InitRestartDepca(dev); /* Resume normal operation. */ - netif_start_queue(dev); /* Unlock the TX ring */ -} - -/* -** Calculate the hash code and update the logical address filter -** from a list of ethernet multicast addresses. -** Big endian crc one liner is mine, all mine, ha ha ha ha! -** LANCE calculates its hash codes big endian. -*/ -static void SetMulticastFilter(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - struct netdev_hw_addr *ha; - int i, j, bit, byte; - u16 hashcode; - u32 crc; - - if (dev->flags & IFF_ALLMULTI) { /* Set all multicast bits */ - for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { - lp->init_block.mcast_table[i] = (char) 0xff; - } - } else { - for (i = 0; i < (HASH_TABLE_LEN >> 3); i++) { /* Clear the multicast table */ - lp->init_block.mcast_table[i] = 0; - } - /* Add multicast addresses */ - netdev_for_each_mc_addr(ha, dev) { - crc = ether_crc(ETH_ALEN, ha->addr); - hashcode = (crc & 1); /* hashcode is 6 LSb of CRC ... */ - for (j = 0; j < 5; j++) { /* ... in reverse order. */ - hashcode = (hashcode << 1) | ((crc >>= 1) & 1); - } - - byte = hashcode >> 3; /* bit[3-5] -> byte in filter */ - bit = 1 << (hashcode & 0x07); /* bit[0-2] -> bit in byte */ - lp->init_block.mcast_table[byte] |= bit; - } - } -} - -static int __init depca_common_init (u_long ioaddr, struct net_device **devp) -{ - int status = 0; - - if (!request_region (ioaddr, DEPCA_TOTAL_SIZE, depca_string)) { - status = -EBUSY; - goto out; - } - - if (DevicePresent(ioaddr)) { - status = -ENODEV; - goto out_release; - } - - if (!(*devp = alloc_etherdev (sizeof (struct depca_private)))) { - status = -ENOMEM; - goto out_release; - } - - return 0; - - out_release: - release_region (ioaddr, DEPCA_TOTAL_SIZE); - out: - return status; -} - -/* -** ISA bus I/O device probe -*/ - -static void __init depca_platform_probe (void) -{ - int i; - struct platform_device *pldev; - - for (i = 0; depca_io_ports[i].iobase; i++) { - depca_io_ports[i].device = NULL; - - /* if an address has been specified on the command - * line, use it (if valid) */ - if (io && io != depca_io_ports[i].iobase) - continue; - - pldev = platform_device_alloc(depca_string, i); - if (!pldev) - continue; - - pldev->dev.platform_data = (void *) depca_io_ports[i].iobase; - depca_io_ports[i].device = pldev; - - if (platform_device_add(pldev)) { - depca_io_ports[i].device = NULL; - pldev->dev.platform_data = NULL; - platform_device_put(pldev); - continue; - } - - if (!pldev->dev.driver) { - /* The driver was not bound to this device, there was - * no hardware at this address. Unregister it, as the - * release function will take care of freeing the - * allocated structure */ - - depca_io_ports[i].device = NULL; - pldev->dev.platform_data = NULL; - platform_device_unregister (pldev); - } - } -} - -static enum depca_type __init depca_shmem_probe (ulong *mem_start) -{ - u_long mem_base[] = DEPCA_RAM_BASE_ADDRESSES; - enum depca_type adapter = unknown; - int i; - - for (i = 0; mem_base[i]; i++) { - *mem_start = mem ? mem : mem_base[i]; - adapter = DepcaSignature (adapter_name, *mem_start); - if (adapter != unknown) - break; - } - - return adapter; -} - -static int depca_isa_probe(struct platform_device *device) -{ - struct net_device *dev; - struct depca_private *lp; - u_long ioaddr, mem_start = 0; - enum depca_type adapter = unknown; - int status = 0; - - ioaddr = (u_long) device->dev.platform_data; - - if ((status = depca_common_init (ioaddr, &dev))) - goto out; - - adapter = depca_shmem_probe (&mem_start); - - if (adapter == unknown) { - status = -ENODEV; - goto out_free; - } - - dev->base_addr = ioaddr; - dev->irq = irq; /* Use whatever value the user gave - * us, and 0 if he didn't. */ - lp = netdev_priv(dev); - lp->depca_bus = DEPCA_BUS_ISA; - lp->adapter = adapter; - lp->mem_start = mem_start; - - if ((status = depca_hw_init(dev, &device->dev))) - goto out_free; - - return 0; - - out_free: - free_netdev (dev); - release_region (ioaddr, DEPCA_TOTAL_SIZE); - out: - return status; -} - -/* -** EISA callbacks from sysfs. -*/ - -#ifdef CONFIG_EISA -static int __init depca_eisa_probe (struct device *device) -{ - enum depca_type adapter = unknown; - struct eisa_device *edev; - struct net_device *dev; - struct depca_private *lp; - u_long ioaddr, mem_start; - int status = 0; - - edev = to_eisa_device (device); - ioaddr = edev->base_addr + DEPCA_EISA_IO_PORTS; - - if ((status = depca_common_init (ioaddr, &dev))) - goto out; - - /* It would have been nice to get card configuration from the - * card. Unfortunately, this register is write-only (shares - * it's address with the ethernet prom)... As we don't parse - * the EISA configuration structures (yet... :-), just rely on - * the ISA probing to sort it out... */ - - adapter = depca_shmem_probe (&mem_start); - if (adapter == unknown) { - status = -ENODEV; - goto out_free; - } - - dev->base_addr = ioaddr; - dev->irq = irq; - lp = netdev_priv(dev); - lp->depca_bus = DEPCA_BUS_EISA; - lp->adapter = edev->id.driver_data; - lp->mem_start = mem_start; - - if ((status = depca_hw_init(dev, device))) - goto out_free; - - return 0; - - out_free: - free_netdev (dev); - release_region (ioaddr, DEPCA_TOTAL_SIZE); - out: - return status; -} -#endif - -static int depca_device_remove(struct device *device) -{ - struct net_device *dev; - struct depca_private *lp; - int bus; - - dev = dev_get_drvdata(device); - lp = netdev_priv(dev); - - unregister_netdev (dev); - iounmap (lp->sh_mem); - release_mem_region (lp->mem_start, lp->mem_len); - release_region (dev->base_addr, DEPCA_TOTAL_SIZE); - bus = lp->depca_bus; - free_netdev (dev); - - return 0; -} - -/* -** Look for a particular board name in the on-board Remote Diagnostics -** and Boot (readb) ROM. This will also give us a clue to the network RAM -** base address. -*/ -static int __init DepcaSignature(char *name, u_long base_addr) -{ - u_int i, j, k; - void __iomem *ptr; - char tmpstr[16]; - u_long prom_addr = base_addr + 0xc000; - u_long mem_addr = base_addr + 0x8000; /* 32KB */ - - /* Can't reserve the prom region, it is already marked as - * used, at least on x86. Instead, reserve a memory region a - * board would certainly use. If it works, go ahead. If not, - * run like hell... */ - - if (!request_mem_region (mem_addr, 16, depca_string)) - return unknown; - - /* Copy the first 16 bytes of ROM */ - - ptr = ioremap(prom_addr, 16); - if (ptr == NULL) { - printk(KERN_ERR "depca: I/O remap failed at %lx\n", prom_addr); - return unknown; - } - for (i = 0; i < 16; i++) { - tmpstr[i] = readb(ptr + i); - } - iounmap(ptr); - - release_mem_region (mem_addr, 16); - - /* Check if PROM contains a valid string */ - for (i = 0; *depca_signature[i] != '\0'; i++) { - for (j = 0, k = 0; j < 16 && k < strlen(depca_signature[i]); j++) { - if (depca_signature[i][k] == tmpstr[j]) { /* track signature */ - k++; - } else { /* lost signature; begin search again */ - k = 0; - } - } - if (k == strlen(depca_signature[i])) - break; - } - - /* Check if name string is valid, provided there's no PROM */ - if (name && *name && (i == unknown)) { - for (i = 0; *depca_signature[i] != '\0'; i++) { - if (strcmp(name, depca_signature[i]) == 0) - break; - } - } - - return i; -} - -/* -** Look for a special sequence in the Ethernet station address PROM that -** is common across all DEPCA products. Note that the original DEPCA needs -** its ROM address counter to be initialized and enabled. Only enable -** if the first address octet is a 0x08 - this minimises the chances of -** messing around with some other hardware, but it assumes that this DEPCA -** card initialized itself correctly. -** -** Search the Ethernet address ROM for the signature. Since the ROM address -** counter can start at an arbitrary point, the search must include the entire -** probe sequence length plus the (length_of_the_signature - 1). -** Stop the search IMMEDIATELY after the signature is found so that the -** PROM address counter is correctly positioned at the start of the -** ethernet address for later read out. -*/ -static int __init DevicePresent(u_long ioaddr) -{ - union { - struct { - u32 a; - u32 b; - } llsig; - char Sig[sizeof(u32) << 1]; - } - dev; - short sigLength = 0; - s8 data; - s16 nicsr; - int i, j, status = 0; - - data = inb(DEPCA_PROM); /* clear counter on DEPCA */ - data = inb(DEPCA_PROM); /* read data */ - - if (data == 0x08) { /* Enable counter on DEPCA */ - nicsr = inb(DEPCA_NICSR); - nicsr |= AAC; - outb(nicsr, DEPCA_NICSR); - } - - dev.llsig.a = ETH_PROM_SIG; - dev.llsig.b = ETH_PROM_SIG; - sigLength = sizeof(u32) << 1; - - for (i = 0, j = 0; j < sigLength && i < PROBE_LENGTH + sigLength - 1; i++) { - data = inb(DEPCA_PROM); - if (dev.Sig[j] == data) { /* track signature */ - j++; - } else { /* lost signature; begin search again */ - if (data == dev.Sig[0]) { /* rare case.... */ - j = 1; - } else { - j = 0; - } - } - } - - if (j != sigLength) { - status = -ENODEV; /* search failed */ - } - - return status; -} - -/* -** The DE100 and DE101 PROM accesses were made non-standard for some bizarre -** reason: access the upper half of the PROM with x=0; access the lower half -** with x=1. -*/ -static int __init get_hw_addr(struct net_device *dev) -{ - u_long ioaddr = dev->base_addr; - struct depca_private *lp = netdev_priv(dev); - int i, k, tmp, status = 0; - u_short j, x, chksum; - - x = (((lp->adapter == de100) || (lp->adapter == de101)) ? 1 : 0); - - for (i = 0, k = 0, j = 0; j < 3; j++) { - k <<= 1; - if (k > 0xffff) - k -= 0xffff; - - k += (u_char) (tmp = inb(DEPCA_PROM + x)); - dev->dev_addr[i++] = (u_char) tmp; - k += (u_short) ((tmp = inb(DEPCA_PROM + x)) << 8); - dev->dev_addr[i++] = (u_char) tmp; - - if (k > 0xffff) - k -= 0xffff; - } - if (k == 0xffff) - k = 0; - - chksum = (u_char) inb(DEPCA_PROM + x); - chksum |= (u_short) (inb(DEPCA_PROM + x) << 8); - if (k != chksum) - status = -1; - - return status; -} - -/* -** Load a packet into the shared memory -*/ -static int load_packet(struct net_device *dev, struct sk_buff *skb) -{ - struct depca_private *lp = netdev_priv(dev); - int i, entry, end, len, status = NETDEV_TX_OK; - - entry = lp->tx_new; /* Ring around buffer number. */ - end = (entry + (skb->len - 1) / TX_BUFF_SZ) & lp->txRingMask; - if (!(readl(&lp->tx_ring[end].base) & T_OWN)) { /* Enough room? */ - /* - ** Caution: the write order is important here... don't set up the - ** ownership rights until all the other information is in place. - */ - if (end < entry) { /* wrapped buffer */ - len = (lp->txRingMask - entry + 1) * TX_BUFF_SZ; - memcpy_toio(lp->tx_buff[entry], skb->data, len); - memcpy_toio(lp->tx_buff[0], skb->data + len, skb->len - len); - } else { /* linear buffer */ - memcpy_toio(lp->tx_buff[entry], skb->data, skb->len); - } - - /* set up the buffer descriptors */ - len = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; - for (i = entry; i != end; i = (i+1) & lp->txRingMask) { - /* clean out flags */ - writel(readl(&lp->tx_ring[i].base) & ~T_FLAGS, &lp->tx_ring[i].base); - writew(0x0000, &lp->tx_ring[i].misc); /* clears other error flags */ - writew(-TX_BUFF_SZ, &lp->tx_ring[i].length); /* packet length in buffer */ - len -= TX_BUFF_SZ; - } - /* clean out flags */ - writel(readl(&lp->tx_ring[end].base) & ~T_FLAGS, &lp->tx_ring[end].base); - writew(0x0000, &lp->tx_ring[end].misc); /* clears other error flags */ - writew(-len, &lp->tx_ring[end].length); /* packet length in last buff */ - - /* start of packet */ - writel(readl(&lp->tx_ring[entry].base) | T_STP, &lp->tx_ring[entry].base); - /* end of packet */ - writel(readl(&lp->tx_ring[end].base) | T_ENP, &lp->tx_ring[end].base); - - for (i = end; i != entry; --i) { - /* ownership of packet */ - writel(readl(&lp->tx_ring[i].base) | T_OWN, &lp->tx_ring[i].base); - if (i == 0) - i = lp->txRingMask + 1; - } - writel(readl(&lp->tx_ring[entry].base) | T_OWN, &lp->tx_ring[entry].base); - - lp->tx_new = (++end) & lp->txRingMask; /* update current pointers */ - } else { - status = NETDEV_TX_LOCKED; - } - - return status; -} - -static void depca_dbg_open(struct net_device *dev) -{ - struct depca_private *lp = netdev_priv(dev); - u_long ioaddr = dev->base_addr; - struct depca_init *p = &lp->init_block; - int i; - - if (depca_debug > 1) { - /* Do not copy the shadow init block into shared memory */ - /* Debugging should not affect normal operation! */ - /* The shadow init block will get copied across during InitRestartDepca */ - printk("%s: depca open with irq %d\n", dev->name, dev->irq); - printk("Descriptor head addresses (CPU):\n"); - printk(" 0x%lx 0x%lx\n", (u_long) lp->rx_ring, (u_long) lp->tx_ring); - printk("Descriptor addresses (CPU):\nRX: "); - for (i = 0; i < lp->rxRingMask; i++) { - if (i < 3) { - printk("%p ", &lp->rx_ring[i].base); - } - } - printk("...%p\n", &lp->rx_ring[i].base); - printk("TX: "); - for (i = 0; i < lp->txRingMask; i++) { - if (i < 3) { - printk("%p ", &lp->tx_ring[i].base); - } - } - printk("...%p\n", &lp->tx_ring[i].base); - printk("\nDescriptor buffers (Device):\nRX: "); - for (i = 0; i < lp->rxRingMask; i++) { - if (i < 3) { - printk("0x%8.8x ", readl(&lp->rx_ring[i].base)); - } - } - printk("...0x%8.8x\n", readl(&lp->rx_ring[i].base)); - printk("TX: "); - for (i = 0; i < lp->txRingMask; i++) { - if (i < 3) { - printk("0x%8.8x ", readl(&lp->tx_ring[i].base)); - } - } - printk("...0x%8.8x\n", readl(&lp->tx_ring[i].base)); - printk("Initialisation block at 0x%8.8lx(Phys)\n", lp->mem_start); - printk(" mode: 0x%4.4x\n", p->mode); - printk(" physical address: %pM\n", p->phys_addr); - printk(" multicast hash table: "); - for (i = 0; i < (HASH_TABLE_LEN >> 3) - 1; i++) { - printk("%2.2x:", p->mcast_table[i]); - } - printk("%2.2x\n", p->mcast_table[i]); - printk(" rx_ring at: 0x%8.8x\n", p->rx_ring); - printk(" tx_ring at: 0x%8.8x\n", p->tx_ring); - printk("buffers (Phys): 0x%8.8lx\n", lp->mem_start + lp->buffs_offset); - printk("Ring size:\nRX: %d Log2(rxRingMask): 0x%8.8x\n", (int) lp->rxRingMask + 1, lp->rx_rlen); - printk("TX: %d Log2(txRingMask): 0x%8.8x\n", (int) lp->txRingMask + 1, lp->tx_rlen); - outw(CSR2, DEPCA_ADDR); - printk("CSR2&1: 0x%4.4x", inw(DEPCA_DATA)); - outw(CSR1, DEPCA_ADDR); - printk("%4.4x\n", inw(DEPCA_DATA)); - outw(CSR3, DEPCA_ADDR); - printk("CSR3: 0x%4.4x\n", inw(DEPCA_DATA)); - } -} - -/* -** Perform IOCTL call functions here. Some are privileged operations and the -** effective uid is checked in those cases. -** All multicast IOCTLs will not work here and are for testing purposes only. -*/ -static int depca_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct depca_private *lp = netdev_priv(dev); - struct depca_ioctl *ioc = (struct depca_ioctl *) &rq->ifr_ifru; - int i, status = 0; - u_long ioaddr = dev->base_addr; - union { - u8 addr[(HASH_TABLE_LEN * ETH_ALEN)]; - u16 sval[(HASH_TABLE_LEN * ETH_ALEN) >> 1]; - u32 lval[(HASH_TABLE_LEN * ETH_ALEN) >> 2]; - } tmp; - unsigned long flags; - void *buf; - - switch (ioc->cmd) { - case DEPCA_GET_HWADDR: /* Get the hardware address */ - for (i = 0; i < ETH_ALEN; i++) { - tmp.addr[i] = dev->dev_addr[i]; - } - ioc->len = ETH_ALEN; - if (copy_to_user(ioc->data, tmp.addr, ioc->len)) - return -EFAULT; - break; - - case DEPCA_SET_HWADDR: /* Set the hardware address */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN)) - return -EFAULT; - for (i = 0; i < ETH_ALEN; i++) { - dev->dev_addr[i] = tmp.addr[i]; - } - netif_stop_queue(dev); - while (lp->tx_old != lp->tx_new) - cpu_relax(); /* Wait for the ring to empty */ - - STOP_DEPCA; /* Temporarily stop the depca. */ - depca_init_ring(dev); /* Initialize the descriptor rings */ - LoadCSRs(dev); /* Reload CSR3 */ - InitRestartDepca(dev); /* Resume normal operation. */ - netif_start_queue(dev); /* Unlock the TX ring */ - break; - - case DEPCA_SET_PROM: /* Set Promiscuous Mode */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - netif_stop_queue(dev); - while (lp->tx_old != lp->tx_new) - cpu_relax(); /* Wait for the ring to empty */ - - STOP_DEPCA; /* Temporarily stop the depca. */ - depca_init_ring(dev); /* Initialize the descriptor rings */ - lp->init_block.mode |= PROM; /* Set promiscuous mode */ - - LoadCSRs(dev); /* Reload CSR3 */ - InitRestartDepca(dev); /* Resume normal operation. */ - netif_start_queue(dev); /* Unlock the TX ring */ - break; - - case DEPCA_CLR_PROM: /* Clear Promiscuous Mode */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - netif_stop_queue(dev); - while (lp->tx_old != lp->tx_new) - cpu_relax(); /* Wait for the ring to empty */ - - STOP_DEPCA; /* Temporarily stop the depca. */ - depca_init_ring(dev); /* Initialize the descriptor rings */ - lp->init_block.mode &= ~PROM; /* Clear promiscuous mode */ - - LoadCSRs(dev); /* Reload CSR3 */ - InitRestartDepca(dev); /* Resume normal operation. */ - netif_start_queue(dev); /* Unlock the TX ring */ - break; - - case DEPCA_SAY_BOO: /* Say "Boo!" to the kernel log file */ - if(!capable(CAP_NET_ADMIN)) - return -EPERM; - printk("%s: Boo!\n", dev->name); - break; - - case DEPCA_GET_MCA: /* Get the multicast address table */ - ioc->len = (HASH_TABLE_LEN >> 3); - if (copy_to_user(ioc->data, lp->init_block.mcast_table, ioc->len)) - return -EFAULT; - break; - - case DEPCA_SET_MCA: /* Set a multicast address */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - if (ioc->len >= HASH_TABLE_LEN) - return -EINVAL; - if (copy_from_user(tmp.addr, ioc->data, ETH_ALEN * ioc->len)) - return -EFAULT; - set_multicast_list(dev); - break; - - case DEPCA_CLR_MCA: /* Clear all multicast addresses */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - set_multicast_list(dev); - break; - - case DEPCA_MCA_EN: /* Enable pass all multicast addressing */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - set_multicast_list(dev); - break; - - case DEPCA_GET_STATS: /* Get the driver statistics */ - ioc->len = sizeof(lp->pktStats); - buf = kmalloc(ioc->len, GFP_KERNEL); - if(!buf) - return -ENOMEM; - spin_lock_irqsave(&lp->lock, flags); - memcpy(buf, &lp->pktStats, ioc->len); - spin_unlock_irqrestore(&lp->lock, flags); - if (copy_to_user(ioc->data, buf, ioc->len)) - status = -EFAULT; - kfree(buf); - break; - - case DEPCA_CLR_STATS: /* Zero out the driver statistics */ - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - spin_lock_irqsave(&lp->lock, flags); - memset(&lp->pktStats, 0, sizeof(lp->pktStats)); - spin_unlock_irqrestore(&lp->lock, flags); - break; - - case DEPCA_GET_REG: /* Get the DEPCA Registers */ - i = 0; - tmp.sval[i++] = inw(DEPCA_NICSR); - outw(CSR0, DEPCA_ADDR); /* status register */ - tmp.sval[i++] = inw(DEPCA_DATA); - memcpy(&tmp.sval[i], &lp->init_block, sizeof(struct depca_init)); - ioc->len = i + sizeof(struct depca_init); - if (copy_to_user(ioc->data, tmp.addr, ioc->len)) - return -EFAULT; - break; - - default: - return -EOPNOTSUPP; - } - - return status; -} - -static int __init depca_module_init (void) -{ - int err = 0; - -#ifdef CONFIG_EISA - err = eisa_driver_register(&depca_eisa_driver); - if (err) - goto err_eisa; -#endif - err = platform_driver_register(&depca_isa_driver); - if (err) - goto err_eisa; - - depca_platform_probe(); - return 0; - -err_eisa: -#ifdef CONFIG_EISA - eisa_driver_unregister(&depca_eisa_driver); -#endif - return err; -} - -static void __exit depca_module_exit (void) -{ - int i; -#ifdef CONFIG_EISA - eisa_driver_unregister (&depca_eisa_driver); -#endif - platform_driver_unregister (&depca_isa_driver); - - for (i = 0; depca_io_ports[i].iobase; i++) { - if (depca_io_ports[i].device) { - depca_io_ports[i].device->dev.platform_data = NULL; - platform_device_unregister (depca_io_ports[i].device); - depca_io_ports[i].device = NULL; - } - } -} - -module_init (depca_module_init); -module_exit (depca_module_exit); |