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-rw-r--r--drivers/net/tokenring/ibmtr.c1964
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diff --git a/drivers/net/tokenring/ibmtr.c b/drivers/net/tokenring/ibmtr.c
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index b5c8c18f504..00000000000
--- a/drivers/net/tokenring/ibmtr.c
+++ /dev/null
@@ -1,1964 +0,0 @@
-/* ibmtr.c: A shared-memory IBM Token Ring 16/4 driver for linux
- *
- * Written 1993 by Mark Swanson and Peter De Schrijver.
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * This device driver should work with Any IBM Token Ring Card that does
- * not use DMA.
- *
- * I used Donald Becker's (becker@scyld.com) device driver work
- * as a base for most of my initial work.
- *
- * Changes by Peter De Schrijver
- * (Peter.Deschrijver@linux.cc.kuleuven.ac.be) :
- *
- * + changed name to ibmtr.c in anticipation of other tr boards.
- * + changed reset code and adapter open code.
- * + added SAP open code.
- * + a first attempt to write interrupt, transmit and receive routines.
- *
- * Changes by David W. Morris (dwm@shell.portal.com) :
- * 941003 dwm: - Restructure tok_probe for multiple adapters, devices.
- * + Add comments, misc reorg for clarity.
- * + Flatten interrupt handler levels.
- *
- * Changes by Farzad Farid (farzy@zen.via.ecp.fr)
- * and Pascal Andre (andre@chimay.via.ecp.fr) (March 9 1995) :
- * + multi ring support clean up.
- * + RFC1042 compliance enhanced.
- *
- * Changes by Pascal Andre (andre@chimay.via.ecp.fr) (September 7 1995) :
- * + bug correction in tr_tx
- * + removed redundant information display
- * + some code reworking
- *
- * Changes by Michel Lespinasse (walken@via.ecp.fr),
- * Yann Doussot (doussot@via.ecp.fr) and Pascal Andre (andre@via.ecp.fr)
- * (February 18, 1996) :
- * + modified shared memory and mmio access port the driver to
- * alpha platform (structure access -> readb/writeb)
- *
- * Changes by Steve Kipisz (bungy@ibm.net or kipisz@vnet.ibm.com)
- * (January 18 1996):
- * + swapped WWOR and WWCR in ibmtr.h
- * + moved some init code from tok_probe into trdev_init. The
- * PCMCIA code can call trdev_init to complete initializing
- * the driver.
- * + added -DPCMCIA to support PCMCIA
- * + detecting PCMCIA Card Removal in interrupt handler. If
- * ISRP is FF, then a PCMCIA card has been removed
- * 10/2000 Burt needed a new method to avoid crashing the OS
- *
- * Changes by Paul Norton (pnorton@cts.com) :
- * + restructured the READ.LOG logic to prevent the transmit SRB
- * from being rudely overwritten before the transmit cycle is
- * complete. (August 15 1996)
- * + completed multiple adapter support. (November 20 1996)
- * + implemented csum_partial_copy in tr_rx and increased receive
- * buffer size and count. Minor fixes. (March 15, 1997)
- *
- * Changes by Christopher Turcksin <wabbit@rtfc.demon.co.uk>
- * + Now compiles ok as a module again.
- *
- * Changes by Paul Norton (pnorton@ieee.org) :
- * + moved the header manipulation code in tr_tx and tr_rx to
- * net/802/tr.c. (July 12 1997)
- * + add retry and timeout on open if cable disconnected. (May 5 1998)
- * + lifted 2000 byte mtu limit. now depends on shared-RAM size.
- * May 25 1998)
- * + can't allocate 2k recv buff at 8k shared-RAM. (20 October 1998)
- *
- * Changes by Joel Sloan (jjs@c-me.com) :
- * + disable verbose debug messages by default - to enable verbose
- * debugging, edit the IBMTR_DEBUG_MESSAGES define below
- *
- * Changes by Mike Phillips <phillim@amtrak.com> :
- * + Added extra #ifdef's to work with new PCMCIA Token Ring Code.
- * The PCMCIA code now just sets up the card so it can be recognized
- * by ibmtr_probe. Also checks allocated memory vs. on-board memory
- * for correct figure to use.
- *
- * Changes by Tim Hockin (thockin@isunix.it.ilstu.edu) :
- * + added spinlocks for SMP sanity (10 March 1999)
- *
- * Changes by Jochen Friedrich to enable RFC1469 Option 2 multicasting
- * i.e. using functional address C0 00 00 04 00 00 to transmit and
- * receive multicast packets.
- *
- * Changes by Mike Sullivan (based on original sram patch by Dave Grothe
- * to support windowing into on adapter shared ram.
- * i.e. Use LANAID to setup a PnP configuration with 16K RAM. Paging
- * will shift this 16K window over the entire available shared RAM.
- *
- * Changes by Peter De Schrijver (p2@mind.be) :
- * + fixed a problem with PCMCIA card removal
- *
- * Change by Mike Sullivan et al.:
- * + added turbo card support. No need to use lanaid to configure
- * the adapter into isa compatibility mode.
- *
- * Changes by Burt Silverman to allow the computer to behave nicely when
- * a cable is pulled or not in place, or a PCMCIA card is removed hot.
- */
-
-/* change the define of IBMTR_DEBUG_MESSAGES to a nonzero value
-in the event that chatty debug messages are desired - jjs 12/30/98 */
-
-#define IBMTR_DEBUG_MESSAGES 0
-
-#include <linux/module.h>
-#include <linux/sched.h>
-
-#ifdef PCMCIA /* required for ibmtr_cs.c to build */
-#undef MODULE /* yes, really */
-#undef ENABLE_PAGING
-#else
-#define ENABLE_PAGING 1
-#endif
-
-/* changes the output format of driver initialization */
-#define TR_VERBOSE 0
-
-/* some 95 OS send many non UI frame; this allow removing the warning */
-#define TR_FILTERNONUI 1
-
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/netdevice.h>
-#include <linux/ip.h>
-#include <linux/trdevice.h>
-#include <linux/ibmtr.h>
-
-#include <net/checksum.h>
-
-#include <asm/io.h>
-
-#define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args)
-#define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args)
-
-/* version and credits */
-#ifndef PCMCIA
-static char version[] __devinitdata =
- "\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n"
- " v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n"
- " v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n"
- " v2.2.1 02/08/00 Mike Sullivan <sullivam@us.ibm.com>\n"
- " v2.2.2 07/27/00 Burt Silverman <burts@us.ibm.com>\n"
- " v2.4.0 03/01/01 Mike Sullivan <sullivan@us.ibm.com>\n";
-#endif
-
-/* this allows displaying full adapter information */
-
-static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
-
-static char pcchannelid[] __devinitdata = {
- 0x05, 0x00, 0x04, 0x09,
- 0x04, 0x03, 0x04, 0x0f,
- 0x03, 0x06, 0x03, 0x01,
- 0x03, 0x01, 0x03, 0x00,
- 0x03, 0x09, 0x03, 0x09,
- 0x03, 0x00, 0x02, 0x00
-};
-
-static char mcchannelid[] __devinitdata = {
- 0x04, 0x0d, 0x04, 0x01,
- 0x05, 0x02, 0x05, 0x03,
- 0x03, 0x06, 0x03, 0x03,
- 0x05, 0x08, 0x03, 0x04,
- 0x03, 0x05, 0x03, 0x01,
- 0x03, 0x08, 0x02, 0x00
-};
-
-static char __devinit *adapter_def(char type)
-{
- switch (type) {
- case 0xF: return "PC Adapter | PC Adapter II | Adapter/A";
- case 0xE: return "16/4 Adapter | 16/4 Adapter/A (long)";
- case 0xD: return "16/4 Adapter/A (short) | 16/4 ISA-16 Adapter";
- case 0xC: return "Auto 16/4 Adapter";
- default: return "adapter (unknown type)";
- }
-};
-
-#define TRC_INIT 0x01 /* Trace initialization & PROBEs */
-#define TRC_INITV 0x02 /* verbose init trace points */
-static unsigned char ibmtr_debug_trace = 0;
-
-static int ibmtr_probe1(struct net_device *dev, int ioaddr);
-static unsigned char get_sram_size(struct tok_info *adapt_info);
-static int trdev_init(struct net_device *dev);
-static int tok_open(struct net_device *dev);
-static int tok_init_card(struct net_device *dev);
-static void tok_open_adapter(unsigned long dev_addr);
-static void open_sap(unsigned char type, struct net_device *dev);
-static void tok_set_multicast_list(struct net_device *dev);
-static netdev_tx_t tok_send_packet(struct sk_buff *skb,
- struct net_device *dev);
-static int tok_close(struct net_device *dev);
-static irqreturn_t tok_interrupt(int irq, void *dev_id);
-static void initial_tok_int(struct net_device *dev);
-static void tr_tx(struct net_device *dev);
-static void tr_rx(struct net_device *dev);
-static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
-static void tok_rerun(unsigned long dev_addr);
-static void ibmtr_readlog(struct net_device *dev);
-static int ibmtr_change_mtu(struct net_device *dev, int mtu);
-static void find_turbo_adapters(int *iolist);
-
-static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = {
- 0xa20, 0xa24, 0, 0, 0
-};
-static int __devinitdata turbo_io[IBMTR_MAX_ADAPTERS] = {0};
-static int __devinitdata turbo_irq[IBMTR_MAX_ADAPTERS] = {0};
-static int __devinitdata turbo_searched = 0;
-
-#ifndef PCMCIA
-static __u32 ibmtr_mem_base __devinitdata = 0xd0000;
-#endif
-
-static void __devinit PrtChanID(char *pcid, short stride)
-{
- short i, j;
- for (i = 0, j = 0; i < 24; i++, j += stride)
- printk("%1x", ((int) pcid[j]) & 0x0f);
- printk("\n");
-}
-
-static void __devinit HWPrtChanID(void __iomem *pcid, short stride)
-{
- short i, j;
- for (i = 0, j = 0; i < 24; i++, j += stride)
- printk("%1x", ((int) readb(pcid + j)) & 0x0f);
- printk("\n");
-}
-
-/* We have to ioremap every checked address, because isa_readb is
- * going away.
- */
-
-static void __devinit find_turbo_adapters(int *iolist)
-{
- int ram_addr;
- int index=0;
- void __iomem *chanid;
- int found_turbo=0;
- unsigned char *tchanid, ctemp;
- int i, j;
- unsigned long jif;
- void __iomem *ram_mapped ;
-
- if (turbo_searched == 1) return;
- turbo_searched=1;
- for (ram_addr=0xC0000; ram_addr < 0xE0000; ram_addr+=0x2000) {
-
- __u32 intf_tbl=0;
-
- found_turbo=1;
- ram_mapped = ioremap((u32)ram_addr,0x1fff) ;
- if (ram_mapped==NULL)
- continue ;
- chanid=(CHANNEL_ID + ram_mapped);
- tchanid=pcchannelid;
- ctemp=readb(chanid) & 0x0f;
- if (ctemp != *tchanid) continue;
- for (i=2,j=1; i<=46; i=i+2,j++) {
- if ((readb(chanid+i) & 0x0f) != tchanid[j]){
- found_turbo=0;
- break;
- }
- }
- if (!found_turbo) continue;
-
- writeb(0x90, ram_mapped+0x1E01);
- for(i=2; i<0x0f; i++) {
- writeb(0x00, ram_mapped+0x1E01+i);
- }
- writeb(0x00, ram_mapped+0x1E01);
- for(jif=jiffies+TR_BUSY_INTERVAL; time_before_eq(jiffies,jif););
- intf_tbl=ntohs(readw(ram_mapped+ACA_OFFSET+ACA_RW+WRBR_EVEN));
- if (intf_tbl) {
-#if IBMTR_DEBUG_MESSAGES
- printk("ibmtr::find_turbo_adapters, Turbo found at "
- "ram_addr %x\n",ram_addr);
- printk("ibmtr::find_turbo_adapters, interface_table ");
- for(i=0; i<6; i++) {
- printk("%x:",readb(ram_addr+intf_tbl+i));
- }
- printk("\n");
-#endif
- turbo_io[index]=ntohs(readw(ram_mapped+intf_tbl+4));
- turbo_irq[index]=readb(ram_mapped+intf_tbl+3);
- outb(0, turbo_io[index] + ADAPTRESET);
- for(jif=jiffies+TR_RST_TIME;time_before_eq(jiffies,jif););
- outb(0, turbo_io[index] + ADAPTRESETREL);
- index++;
- continue;
- }
-#if IBMTR_DEBUG_MESSAGES
- printk("ibmtr::find_turbo_adapters, ibmtr card found at"
- " %x but not a Turbo model\n",ram_addr);
-#endif
- iounmap(ram_mapped) ;
- } /* for */
- for(i=0; i<IBMTR_MAX_ADAPTERS; i++) {
- if(!turbo_io[i]) break;
- for (j=0; j<IBMTR_MAX_ADAPTERS; j++) {
- if ( iolist[j] && iolist[j] != turbo_io[i]) continue;
- iolist[j]=turbo_io[i];
- break;
- }
- }
-}
-
-static void ibmtr_cleanup_card(struct net_device *dev)
-{
- if (dev->base_addr) {
- outb(0,dev->base_addr+ADAPTRESET);
-
- schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
-
- outb(0,dev->base_addr+ADAPTRESETREL);
- }
-
-#ifndef PCMCIA
- free_irq(dev->irq, dev);
- release_region(dev->base_addr, IBMTR_IO_EXTENT);
-
- {
- struct tok_info *ti = netdev_priv(dev);
- iounmap(ti->mmio);
- iounmap(ti->sram_virt);
- }
-#endif
-}
-
-/****************************************************************************
- * ibmtr_probe(): Routine specified in the network device structure
- * to probe for an IBM Token Ring Adapter. Routine outline:
- * I. Interrogate hardware to determine if an adapter exists
- * and what the speeds and feeds are
- * II. Setup data structures to control execution based upon
- * adapter characteristics.
- *
- * We expect ibmtr_probe to be called once for each device entry
- * which references it.
- ****************************************************************************/
-
-static int __devinit ibmtr_probe(struct net_device *dev)
-{
- int i;
- int base_addr = dev->base_addr;
-
- if (base_addr && base_addr <= 0x1ff) /* Don't probe at all. */
- return -ENXIO;
- if (base_addr > 0x1ff) { /* Check a single specified location. */
- if (!ibmtr_probe1(dev, base_addr)) return 0;
- return -ENODEV;
- }
- find_turbo_adapters(ibmtr_portlist);
- for (i = 0; ibmtr_portlist[i]; i++) {
- int ioaddr = ibmtr_portlist[i];
-
- if (!ibmtr_probe1(dev, ioaddr)) return 0;
- }
- return -ENODEV;
-}
-
-int __devinit ibmtr_probe_card(struct net_device *dev)
-{
- int err = ibmtr_probe(dev);
- if (!err) {
- err = register_netdev(dev);
- if (err)
- ibmtr_cleanup_card(dev);
- }
- return err;
-}
-
-/*****************************************************************************/
-
-static int __devinit ibmtr_probe1(struct net_device *dev, int PIOaddr)
-{
-
- unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0;
- void __iomem * t_mmio = NULL;
- struct tok_info *ti = netdev_priv(dev);
- void __iomem *cd_chanid;
- unsigned char *tchanid, ctemp;
-#ifndef PCMCIA
- unsigned char t_irq=0;
- unsigned long timeout;
- static int version_printed;
-#endif
-
- /* Query the adapter PIO base port which will return
- * indication of where MMIO was placed. We also have a
- * coded interrupt number.
- */
- segment = inb(PIOaddr);
- if (segment < 0x40 || segment > 0xe0) {
- /* Out of range values so we'll assume non-existent IO device
- * but this is not necessarily a problem, esp if a turbo
- * adapter is being used. */
-#if IBMTR_DEBUG_MESSAGES
- DPRINTK("ibmtr_probe1(): unhappy that inb(0x%X) == 0x%X, "
- "Hardware Problem?\n",PIOaddr,segment);
-#endif
- return -ENODEV;
- }
- /*
- * Compute the linear base address of the MMIO area
- * as LINUX doesn't care about segments
- */
- t_mmio = ioremap(((__u32) (segment & 0xfc) << 11) + 0x80000,2048);
- if (!t_mmio) {
- DPRINTK("Cannot remap mmiobase memory area") ;
- return -ENODEV ;
- }
- intr = segment & 0x03; /* low bits is coded interrupt # */
- if (ibmtr_debug_trace & TRC_INIT)
- DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %p intr: %d\n"
- , PIOaddr, (int) segment, t_mmio, (int) intr);
-
- /*
- * Now we will compare expected 'channelid' strings with
- * what we is there to learn of ISA/MCA or not TR card
- */
-#ifdef PCMCIA
- iounmap(t_mmio);
- t_mmio = ti->mmio; /*BMS to get virtual address */
- irq = ti->irq; /*BMS to display the irq! */
-#endif
- cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */
- tchanid = pcchannelid;
- cardpresent = TR_ISA; /* try ISA */
-
- /* Suboptimize knowing first byte different */
- ctemp = readb(cd_chanid) & 0x0f;
- if (ctemp != *tchanid) { /* NOT ISA card, try MCA */
- tchanid = mcchannelid;
- cardpresent = TR_MCA;
- if (ctemp != *tchanid) /* Neither ISA nor MCA */
- cardpresent = NOTOK;
- }
- if (cardpresent != NOTOK) {
- /* Know presumed type, try rest of ID */
- for (i = 2, j = 1; i <= 46; i = i + 2, j++) {
- if( (readb(cd_chanid+i)&0x0f) == tchanid[j]) continue;
- /* match failed, not TR card */
- cardpresent = NOTOK;
- break;
- }
- }
- /*
- * If we have an ISA board check for the ISA P&P version,
- * as it has different IRQ settings
- */
- if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e))
- cardpresent = TR_ISAPNP;
- if (cardpresent == NOTOK) { /* "channel_id" did not match, report */
- if (!(ibmtr_debug_trace & TRC_INIT)) {
-#ifndef PCMCIA
- iounmap(t_mmio);
-#endif
- return -ENODEV;
- }
- DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n",
- PIOaddr);
- DPRINTK("Expected for ISA: ");
- PrtChanID(pcchannelid, 1);
- DPRINTK(" found: ");
-/* BMS Note that this can be misleading, when hardware is flaky, because you
- are reading it a second time here. So with my flaky hardware, I'll see my-
- self in this block, with the HW ID matching the ISA ID exactly! */
- HWPrtChanID(cd_chanid, 2);
- DPRINTK("Expected for MCA: ");
- PrtChanID(mcchannelid, 1);
- }
- /* Now, setup some of the pl0 buffers for this driver.. */
- /* If called from PCMCIA, it is already set up, so no need to
- waste the memory, just use the existing structure */
-#ifndef PCMCIA
- ti->mmio = t_mmio;
- for (i = 0; i < IBMTR_MAX_ADAPTERS; i++) {
- if (turbo_io[i] != PIOaddr)
- continue;
-#if IBMTR_DEBUG_MESSAGES
- printk("ibmtr::tr_probe1, setting PIOaddr %x to Turbo\n",
- PIOaddr);
-#endif
- ti->turbo = 1;
- t_irq = turbo_irq[i];
- }
-#endif /* !PCMCIA */
- ti->readlog_pending = 0;
- init_waitqueue_head(&ti->wait_for_reset);
-
- /* if PCMCIA, the card can be recognized as either TR_ISA or TR_ISAPNP
- * depending which card is inserted. */
-
-#ifndef PCMCIA
- switch (cardpresent) {
- case TR_ISA:
- if (intr == 0) irq = 9; /* irq2 really is irq9 */
- if (intr == 1) irq = 3;
- if (intr == 2) irq = 6;
- if (intr == 3) irq = 7;
- ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
- break;
- case TR_MCA:
- if (intr == 0) irq = 9;
- if (intr == 1) irq = 3;
- if (intr == 2) irq = 10;
- if (intr == 3) irq = 11;
- ti->global_int_enable = 0;
- ti->adapter_int_enable = 0;
- ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
- break;
- case TR_ISAPNP:
- if (!t_irq) {
- if (intr == 0) irq = 9;
- if (intr == 1) irq = 3;
- if (intr == 2) irq = 10;
- if (intr == 3) irq = 11;
- } else
- irq=t_irq;
- timeout = jiffies + TR_SPIN_INTERVAL;
- while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){
- if (!time_after(jiffies, timeout)) continue;
- DPRINTK( "Hardware timeout during initialization.\n");
- iounmap(t_mmio);
- return -ENODEV;
- }
- ti->sram_phys =
- ((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12);
- ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
- break;
- } /*end switch (cardpresent) */
-#endif /*not PCMCIA */
-
- if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
- DPRINTK("irq=%d", irq);
- printk(", sram_phys=0x%x", ti->sram_phys);
- if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */
- DPRINTK(", ti->mmio=%p", ti->mmio);
- printk(", segment=%02X", segment);
- }
- printk(".\n");
- }
-
- /* Get hw address of token ring card */
- j = 0;
- for (i = 0; i < 0x18; i = i + 2) {
- /* technical reference states to do this */
- temp = readb(ti->mmio + AIP + i) & 0x0f;
- ti->hw_address[j] = temp;
- if (j & 1)
- dev->dev_addr[(j / 2)] =
- ti->hw_address[j]+ (ti->hw_address[j - 1] << 4);
- ++j;
- }
- /* get Adapter type: 'F' = Adapter/A, 'E' = 16/4 Adapter II,... */
- ti->adapter_type = readb(ti->mmio + AIPADAPTYPE);
-
- /* get Data Rate: F=4Mb, E=16Mb, D=4Mb & 16Mb ?? */
- ti->data_rate = readb(ti->mmio + AIPDATARATE);
-
- /* Get Early Token Release support?: F=no, E=4Mb, D=16Mb, C=4&16Mb */
- ti->token_release = readb(ti->mmio + AIPEARLYTOKEN);
-
- /* How much shared RAM is on adapter ? */
- if (ti->turbo) {
- ti->avail_shared_ram=127;
- } else {
- ti->avail_shared_ram = get_sram_size(ti);/*in 512 byte units */
- }
- /* We need to set or do a bunch of work here based on previous results*/
- /* Support paging? What sizes?: F=no, E=16k, D=32k, C=16 & 32k */
- ti->shared_ram_paging = readb(ti->mmio + AIPSHRAMPAGE);
-
- /* Available DHB 4Mb size: F=2048, E=4096, D=4464 */
- switch (readb(ti->mmio + AIP4MBDHB)) {
- case 0xe: ti->dhb_size4mb = 4096; break;
- case 0xd: ti->dhb_size4mb = 4464; break;
- default: ti->dhb_size4mb = 2048; break;
- }
-
- /* Available DHB 16Mb size: F=2048, E=4096, D=8192, C=16384, B=17960 */
- switch (readb(ti->mmio + AIP16MBDHB)) {
- case 0xe: ti->dhb_size16mb = 4096; break;
- case 0xd: ti->dhb_size16mb = 8192; break;
- case 0xc: ti->dhb_size16mb = 16384; break;
- case 0xb: ti->dhb_size16mb = 17960; break;
- default: ti->dhb_size16mb = 2048; break;
- }
-
- /* We must figure out how much shared memory space this adapter
- * will occupy so that if there are two adapters we can fit both
- * in. Given a choice, we will limit this adapter to 32K. The
- * maximum space will will use for two adapters is 64K so if the
- * adapter we are working on demands 64K (it also doesn't support
- * paging), then only one adapter can be supported.
- */
-
- /*
- * determine how much of total RAM is mapped into PC space
- */
- ti->mapped_ram_size= /*sixteen to onehundredtwentyeight 512byte blocks*/
- 1<< ((readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03) + 4);
- ti->page_mask = 0;
- if (ti->turbo) ti->page_mask=0xf0;
- else if (ti->shared_ram_paging == 0xf); /* No paging in adapter */
- else {
-#ifdef ENABLE_PAGING
- unsigned char pg_size = 0;
- /* BMS: page size: PCMCIA, use configuration register;
- ISAPNP, use LANAIDC config tool from www.ibm.com */
- switch (ti->shared_ram_paging) {
- case 0xf:
- break;
- case 0xe:
- ti->page_mask = (ti->mapped_ram_size == 32) ? 0xc0 : 0;
- pg_size = 32; /* 16KB page size */
- break;
- case 0xd:
- ti->page_mask = (ti->mapped_ram_size == 64) ? 0x80 : 0;
- pg_size = 64; /* 32KB page size */
- break;
- case 0xc:
- switch (ti->mapped_ram_size) {
- case 32:
- ti->page_mask = 0xc0;
- pg_size = 32;
- break;
- case 64:
- ti->page_mask = 0x80;
- pg_size = 64;
- break;
- }
- break;
- default:
- DPRINTK("Unknown shared ram paging info %01X\n",
- ti->shared_ram_paging);
- iounmap(t_mmio);
- return -ENODEV;
- break;
- } /*end switch shared_ram_paging */
-
- if (ibmtr_debug_trace & TRC_INIT)
- DPRINTK("Shared RAM paging code: %02X, "
- "mapped RAM size: %dK, shared RAM size: %dK, "
- "page mask: %02X\n:",
- ti->shared_ram_paging, ti->mapped_ram_size / 2,
- ti->avail_shared_ram / 2, ti->page_mask);
-#endif /*ENABLE_PAGING */
- }
-
-#ifndef PCMCIA
- /* finish figuring the shared RAM address */
- if (cardpresent == TR_ISA) {
- static const __u32 ram_bndry_mask[] = {
- 0xffffe000, 0xffffc000, 0xffff8000, 0xffff0000
- };
- __u32 new_base, rrr_32, chk_base, rbm;
-
- rrr_32=readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03;
- rbm = ram_bndry_mask[rrr_32];
- new_base = (ibmtr_mem_base + (~rbm)) & rbm;/* up to boundary */
- chk_base = new_base + (ti->mapped_ram_size << 9);
- if (chk_base > (ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE)) {
- DPRINTK("Shared RAM for this adapter (%05x) exceeds "
- "driver limit (%05x), adapter not started.\n",
- chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
- iounmap(t_mmio);
- return -ENODEV;
- } else { /* seems cool, record what we have figured out */
- ti->sram_base = new_base >> 12;
- ibmtr_mem_base = chk_base;
- }
- }
- else ti->sram_base = ti->sram_phys >> 12;
-
- /* The PCMCIA has already got the interrupt line and the io port,
- so no chance of anybody else getting it - MLP */
- if (request_irq(dev->irq = irq, tok_interrupt, 0, "ibmtr", dev) != 0) {
- DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
- irq);
- iounmap(t_mmio);
- return -ENODEV;
- }
- /*?? Now, allocate some of the PIO PORTs for this driver.. */
- /* record PIOaddr range as busy */
- if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) {
- DPRINTK("Could not grab PIO range. Halting driver.\n");
- free_irq(dev->irq, dev);
- iounmap(t_mmio);
- return -EBUSY;
- }
-
- if (!version_printed++) {
- printk(version);
- }
-#endif /* !PCMCIA */
- DPRINTK("%s %s found\n",
- channel_def[cardpresent - 1], adapter_def(ti->adapter_type));
- DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n",
- irq, PIOaddr, ti->mapped_ram_size / 2);
- DPRINTK("Hardware address : %pM\n", dev->dev_addr);
- if (ti->page_mask)
- DPRINTK("Shared RAM paging enabled. "
- "Page size: %uK Shared Ram size %dK\n",
- ((ti->page_mask^0xff)+1) >>2, ti->avail_shared_ram / 2);
- else
- DPRINTK("Shared RAM paging disabled. ti->page_mask %x\n",
- ti->page_mask);
-
- /* Calculate the maximum DHB we can use */
- /* two cases where avail_shared_ram doesn't equal mapped_ram_size:
- 1. avail_shared_ram is 127 but mapped_ram_size is 128 (typical)
- 2. user has configured adapter for less than avail_shared_ram
- but is not using paging (she should use paging, I believe)
- */
- if (!ti->page_mask) {
- ti->avail_shared_ram=
- min(ti->mapped_ram_size,ti->avail_shared_ram);
- }
-
- switch (ti->avail_shared_ram) {
- case 16: /* 8KB shared RAM */
- ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)2048);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=2;
- ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)2048);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16=2;
- break;
- case 32: /* 16KB shared RAM */
- ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=4;
- ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)4096);
- ti->rbuf_len16 = 1032; /*1024 usable */
- ti->rbuf_cnt16=4;
- break;
- case 64: /* 32KB shared RAM */
- ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=6;
- ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)10240);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16=6;
- break;
- case 127: /* 63.5KB shared RAM */
- ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=6;
- ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)16384);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16=16;
- break;
- case 128: /* 64KB shared RAM */
- ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=6;
- ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)17960);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16=16;
- break;
- default:
- ti->dhb_size4mb = 2048;
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4=2;
- ti->dhb_size16mb = 2048;
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16=2;
- break;
- }
- /* this formula is not smart enough for the paging case
- ti->rbuf_cnt<x> = (ti->avail_shared_ram * BLOCKSZ - ADAPT_PRIVATE -
- ARBLENGTH - SSBLENGTH - DLC_MAX_SAP * SAPLENGTH -
- DLC_MAX_STA * STALENGTH - ti->dhb_size<x>mb * NUM_DHB -
- SRBLENGTH - ASBLENGTH) / ti->rbuf_len<x>;
- */
- ti->maxmtu16 = (ti->rbuf_len16 - 8) * ti->rbuf_cnt16 - TR_HLEN;
- ti->maxmtu4 = (ti->rbuf_len4 - 8) * ti->rbuf_cnt4 - TR_HLEN;
- /*BMS assuming 18 bytes of Routing Information (usually works) */
- DPRINTK("Maximum Receive Internet Protocol MTU 16Mbps: %d, 4Mbps: %d\n",
- ti->maxmtu16, ti->maxmtu4);
-
- dev->base_addr = PIOaddr; /* set the value for device */
- dev->mem_start = ti->sram_base << 12;
- dev->mem_end = dev->mem_start + (ti->mapped_ram_size << 9) - 1;
- trdev_init(dev);
- return 0; /* Return 0 to indicate we have found a Token Ring card. */
-} /*ibmtr_probe1() */
-
-/*****************************************************************************/
-
-/* query the adapter for the size of shared RAM */
-/* the function returns the RAM size in units of 512 bytes */
-
-static unsigned char __devinit get_sram_size(struct tok_info *adapt_info)
-{
- unsigned char avail_sram_code;
- static unsigned char size_code[] = { 0, 16, 32, 64, 127, 128 };
- /* Adapter gives
- 'F' -- use RRR bits 3,2
- 'E' -- 8kb 'D' -- 16kb
- 'C' -- 32kb 'A' -- 64KB
- 'B' - 64KB less 512 bytes at top
- (WARNING ... must zero top bytes in INIT */
-
- avail_sram_code = 0xf - readb(adapt_info->mmio + AIPAVAILSHRAM);
- if (avail_sram_code) return size_code[avail_sram_code];
- else /* for code 'F', must compute size from RRR(3,2) bits */
- return 1 <<
- ((readb(adapt_info->mmio+ACA_OFFSET+ACA_RW+RRR_ODD)>>2&3)+4);
-}
-
-/*****************************************************************************/
-
-static const struct net_device_ops trdev_netdev_ops = {
- .ndo_open = tok_open,
- .ndo_stop = tok_close,
- .ndo_start_xmit = tok_send_packet,
- .ndo_set_rx_mode = tok_set_multicast_list,
- .ndo_change_mtu = ibmtr_change_mtu,
-};
-
-static int __devinit trdev_init(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
-
- SET_PAGE(ti->srb_page);
- ti->open_failure = NO ;
- dev->netdev_ops = &trdev_netdev_ops;
-
- return 0;
-}
-
-/*****************************************************************************/
-
-static int tok_init_card(struct net_device *dev)
-{
- struct tok_info *ti;
- short PIOaddr;
- unsigned long i;
-
- PIOaddr = dev->base_addr;
- ti = netdev_priv(dev);
- /* Special processing for first interrupt after reset */
- ti->do_tok_int = FIRST_INT;
- /* Reset adapter */
- writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
- outb(0, PIOaddr + ADAPTRESET);
-
- schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
-
- outb(0, PIOaddr + ADAPTRESETREL);
-#ifdef ENABLE_PAGING
- if (ti->page_mask)
- writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN);
-#endif
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ);
- return i? 0 : -EAGAIN;
-}
-
-/*****************************************************************************/
-static int tok_open(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
- int i;
-
- /*the case we were left in a failure state during a previous open */
- if (ti->open_failure == YES) {
- DPRINTK("Last time you were disconnected, how about now?\n");
- printk("You can't insert with an ICS connector half-cocked.\n");
- }
-
- ti->open_status = CLOSED; /* CLOSED or OPEN */
- ti->sap_status = CLOSED; /* CLOSED or OPEN */
- ti->open_failure = NO; /* NO or YES */
- ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */
-
- ti->sram_phys &= ~1; /* to reverse what we do in tok_close */
- /* init the spinlock */
- spin_lock_init(&ti->lock);
- init_timer(&ti->tr_timer);
-
- i = tok_init_card(dev);
- if (i) return i;
-
- while (1){
- tok_open_adapter((unsigned long) dev);
- i= interruptible_sleep_on_timeout(&ti->wait_for_reset, 25 * HZ);
- /* sig catch: estimate opening adapter takes more than .5 sec*/
- if (i>(245*HZ)/10) break; /* fancier than if (i==25*HZ) */
- if (i==0) break;
- if (ti->open_status == OPEN && ti->sap_status==OPEN) {
- netif_start_queue(dev);
- DPRINTK("Adapter is up and running\n");
- return 0;
- }
- i=schedule_timeout_interruptible(TR_RETRY_INTERVAL);
- /* wait 30 seconds */
- if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */
- }
- outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/
- DPRINTK("TERMINATED via signal\n"); /*BMS useful */
- return -EAGAIN;
-}
-
-/*****************************************************************************/
-
-#define COMMAND_OFST 0
-#define OPEN_OPTIONS_OFST 8
-#define NUM_RCV_BUF_OFST 24
-#define RCV_BUF_LEN_OFST 26
-#define DHB_LENGTH_OFST 28
-#define NUM_DHB_OFST 30
-#define DLC_MAX_SAP_OFST 32
-#define DLC_MAX_STA_OFST 33
-
-static void tok_open_adapter(unsigned long dev_addr)
-{
- struct net_device *dev = (struct net_device *) dev_addr;
- struct tok_info *ti;
- int i;
-
- ti = netdev_priv(dev);
- SET_PAGE(ti->init_srb_page);
- writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
- for (i = 0; i < sizeof(struct dir_open_adapter); i++)
- writeb(0, ti->init_srb + i);
- writeb(DIR_OPEN_ADAPTER, ti->init_srb + COMMAND_OFST);
- writew(htons(OPEN_PASS_BCON_MAC), ti->init_srb + OPEN_OPTIONS_OFST);
- if (ti->ring_speed == 16) {
- writew(htons(ti->dhb_size16mb), ti->init_srb + DHB_LENGTH_OFST);
- writew(htons(ti->rbuf_cnt16), ti->init_srb + NUM_RCV_BUF_OFST);
- writew(htons(ti->rbuf_len16), ti->init_srb + RCV_BUF_LEN_OFST);
- } else {
- writew(htons(ti->dhb_size4mb), ti->init_srb + DHB_LENGTH_OFST);
- writew(htons(ti->rbuf_cnt4), ti->init_srb + NUM_RCV_BUF_OFST);
- writew(htons(ti->rbuf_len4), ti->init_srb + RCV_BUF_LEN_OFST);
- }
- writeb(NUM_DHB, /* always 2 */ ti->init_srb + NUM_DHB_OFST);
- writeb(DLC_MAX_SAP, ti->init_srb + DLC_MAX_SAP_OFST);
- writeb(DLC_MAX_STA, ti->init_srb + DLC_MAX_STA_OFST);
- ti->srb = ti->init_srb; /* We use this one in the interrupt handler */
- ti->srb_page = ti->init_srb_page;
- DPRINTK("Opening adapter: Xmit bfrs: %d X %d, Rcv bfrs: %d X %d\n",
- readb(ti->init_srb + NUM_DHB_OFST),
- ntohs(readw(ti->init_srb + DHB_LENGTH_OFST)),
- ntohs(readw(ti->init_srb + NUM_RCV_BUF_OFST)),
- ntohs(readw(ti->init_srb + RCV_BUF_LEN_OFST)));
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-}
-
-/*****************************************************************************/
-
-static void open_sap(unsigned char type, struct net_device *dev)
-{
- int i;
- struct tok_info *ti = netdev_priv(dev);
-
- SET_PAGE(ti->srb_page);
- for (i = 0; i < sizeof(struct dlc_open_sap); i++)
- writeb(0, ti->srb + i);
-
-#define MAX_I_FIELD_OFST 14
-#define SAP_VALUE_OFST 16
-#define SAP_OPTIONS_OFST 17
-#define STATION_COUNT_OFST 18
-
- writeb(DLC_OPEN_SAP, ti->srb + COMMAND_OFST);
- writew(htons(MAX_I_FIELD), ti->srb + MAX_I_FIELD_OFST);
- writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY, ti->srb+ SAP_OPTIONS_OFST);
- writeb(SAP_OPEN_STATION_CNT, ti->srb + STATION_COUNT_OFST);
- writeb(type, ti->srb + SAP_VALUE_OFST);
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-}
-
-
-/*****************************************************************************/
-
-static void tok_set_multicast_list(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
- struct netdev_hw_addr *ha;
- unsigned char address[4];
-
- int i;
-
- /*BMS the next line is CRUCIAL or you may be sad when you */
- /*BMS ifconfig tr down or hot unplug a PCMCIA card ??hownowbrowncow*/
- if (/*BMSHELPdev->start == 0 ||*/ ti->open_status != OPEN) return;
- address[0] = address[1] = address[2] = address[3] = 0;
- netdev_for_each_mc_addr(ha, dev) {
- address[0] |= ha->addr[2];
- address[1] |= ha->addr[3];
- address[2] |= ha->addr[4];
- address[3] |= ha->addr[5];
- }
- SET_PAGE(ti->srb_page);
- for (i = 0; i < sizeof(struct srb_set_funct_addr); i++)
- writeb(0, ti->srb + i);
-
-#define FUNCT_ADDRESS_OFST 6
-
- writeb(DIR_SET_FUNC_ADDR, ti->srb + COMMAND_OFST);
- for (i = 0; i < 4; i++)
- writeb(address[i], ti->srb + FUNCT_ADDRESS_OFST + i);
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-#if TR_VERBOSE
- DPRINTK("Setting functional address: ");
- for (i=0;i<4;i++) printk("%02X ", address[i]);
- printk("\n");
-#endif
-}
-
-/*****************************************************************************/
-
-#define STATION_ID_OFST 4
-
-static netdev_tx_t tok_send_packet(struct sk_buff *skb,
- struct net_device *dev)
-{
- struct tok_info *ti;
- unsigned long flags;
- ti = netdev_priv(dev);
-
- netif_stop_queue(dev);
-
- /* lock against other CPUs */
- spin_lock_irqsave(&(ti->lock), flags);
-
- /* Save skb; we'll need it when the adapter asks for the data */
- ti->current_skb = skb;
- SET_PAGE(ti->srb_page);
- writeb(XMIT_UI_FRAME, ti->srb + COMMAND_OFST);
- writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- spin_unlock_irqrestore(&(ti->lock), flags);
- return NETDEV_TX_OK;
-}
-
-/*****************************************************************************/
-
-static int tok_close(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
-
- /* Important for PCMCIA hot unplug, otherwise, we'll pull the card, */
- /* unloading the module from memory, and then if a timer pops, ouch */
- del_timer_sync(&ti->tr_timer);
- outb(0, dev->base_addr + ADAPTRESET);
- ti->sram_phys |= 1;
- ti->open_status = CLOSED;
-
- netif_stop_queue(dev);
- DPRINTK("Adapter is closed.\n");
- return 0;
-}
-
-/*****************************************************************************/
-
-#define RETCODE_OFST 2
-#define OPEN_ERROR_CODE_OFST 6
-#define ASB_ADDRESS_OFST 8
-#define SRB_ADDRESS_OFST 10
-#define ARB_ADDRESS_OFST 12
-#define SSB_ADDRESS_OFST 14
-
-static char *printphase[]= {"Lobe media test","Physical insertion",
- "Address verification","Roll call poll","Request Parameters"};
-static char *printerror[]={"Function failure","Signal loss","Reserved",
- "Frequency error","Timeout","Ring failure","Ring beaconing",
- "Duplicate node address",
- "Parameter request-retry count exceeded","Remove received",
- "IMPL force received","Duplicate modifier",
- "No monitor detected","Monitor contention failed for RPL"};
-
-static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page)
-{
- if (ti->page_mask) {
- *page = (index >> 8) & ti->page_mask;
- index &= ~(ti->page_mask << 8);
- }
- return ti->sram_virt + index;
-}
-
-static void dir_open_adapter (struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
- unsigned char ret_code;
- __u16 err;
-
- ti->srb = map_address(ti,
- ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)),
- &ti->srb_page);
- ti->ssb = map_address(ti,
- ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)),
- &ti->ssb_page);
- ti->arb = map_address(ti,
- ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)),
- &ti->arb_page);
- ti->asb = map_address(ti,
- ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)),
- &ti->asb_page);
- ti->current_skb = NULL;
- ret_code = readb(ti->init_srb + RETCODE_OFST);
- err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST));
- if (!ret_code) {
- ti->open_status = OPEN; /* TR adapter is now available */
- if (ti->open_mode == AUTOMATIC) {
- DPRINTK("Adapter reopened.\n");
- }
- writeb(~SRB_RESP_INT, ti->mmio+ACA_OFFSET+ACA_RESET+ISRP_ODD);
- open_sap(EXTENDED_SAP, dev);
- return;
- }
- ti->open_failure = YES;
- if (ret_code == 7){
- if (err == 0x24) {
- if (!ti->auto_speedsave) {
- DPRINTK("Open failed: Adapter speed must match "
- "ring speed if Automatic Ring Speed Save is "
- "disabled.\n");
- ti->open_action = FAIL;
- }else
- DPRINTK("Retrying open to adjust to "
- "ring speed, ");
- } else if (err == 0x2d) {
- DPRINTK("Physical Insertion: No Monitor Detected, ");
- printk("retrying after %ds delay...\n",
- TR_RETRY_INTERVAL/HZ);
- } else if (err == 0x11) {
- DPRINTK("Lobe Media Function Failure (0x11), ");
- printk(" retrying after %ds delay...\n",
- TR_RETRY_INTERVAL/HZ);
- } else {
- char **prphase = printphase;
- char **prerror = printerror;
- int pnr = err / 16 - 1;
- int enr = err % 16 - 1;
- DPRINTK("TR Adapter misc open failure, error code = ");
- if (pnr < 0 || pnr >= ARRAY_SIZE(printphase) ||
- enr < 0 ||
- enr >= ARRAY_SIZE(printerror))
- printk("0x%x, invalid Phase/Error.", err);
- else
- printk("0x%x, Phase: %s, Error: %s\n", err,
- prphase[pnr], prerror[enr]);
- printk(" retrying after %ds delay...\n",
- TR_RETRY_INTERVAL/HZ);
- }
- } else DPRINTK("open failed: ret_code = %02X..., ", ret_code);
- if (ti->open_action != FAIL) {
- if (ti->open_mode==AUTOMATIC){
- ti->open_action = REOPEN;
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- return;
- }
- wake_up(&ti->wait_for_reset);
- return;
- }
- DPRINTK("FAILURE, CAPUT\n");
-}
-
-/******************************************************************************/
-
-static irqreturn_t tok_interrupt(int irq, void *dev_id)
-{
- unsigned char status;
- /* unsigned char status_even ; */
- struct tok_info *ti;
- struct net_device *dev;
-#ifdef ENABLE_PAGING
- unsigned char save_srpr;
-#endif
-
- dev = dev_id;
-#if TR_VERBOSE
- DPRINTK("Int from tok_driver, dev : %p irq%d\n", dev,irq);
-#endif
- ti = netdev_priv(dev);
- if (ti->sram_phys & 1)
- return IRQ_NONE; /* PCMCIA card extraction flag */
- spin_lock(&(ti->lock));
-#ifdef ENABLE_PAGING
- save_srpr = readb(ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
-#endif
-
- /* Disable interrupts till processing is finished */
- writeb((~INT_ENABLE), ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
-
- /* Reset interrupt for ISA boards */
- if (ti->adapter_int_enable)
- outb(0, ti->adapter_int_enable);
- else /* used for PCMCIA cards */
- outb(0, ti->global_int_enable);
- if (ti->do_tok_int == FIRST_INT){
- initial_tok_int(dev);
-#ifdef ENABLE_PAGING
- writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
-#endif
- spin_unlock(&(ti->lock));
- return IRQ_HANDLED;
- }
- /* Begin interrupt handler HERE inline to avoid the extra
- levels of logic and call depth for the original solution. */
- status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_ODD);
- /*BMSstatus_even = readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) */
- /*BMSdebugprintk("tok_interrupt: ISRP_ODD = 0x%x ISRP_EVEN = 0x%x\n", */
- /*BMS status,status_even); */
-
- if (status & ADAP_CHK_INT) {
- int i;
- void __iomem *check_reason;
- __u8 check_reason_page = 0;
- check_reason = map_address(ti,
- ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)),
- &check_reason_page);
- SET_PAGE(check_reason_page);
-
- DPRINTK("Adapter check interrupt\n");
- DPRINTK("8 reason bytes follow: ");
- for (i = 0; i < 8; i++, check_reason++)
- printk("%02X ", (int) readb(check_reason));
- printk("\n");
- writeb(~ADAP_CHK_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
- status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRA_EVEN);
- DPRINTK("ISRA_EVEN == 0x02%x\n",status);
- ti->open_status = CLOSED;
- ti->sap_status = CLOSED;
- ti->open_mode = AUTOMATIC;
- netif_carrier_off(dev);
- netif_stop_queue(dev);
- ti->open_action = RESTART;
- outb(0, dev->base_addr + ADAPTRESET);
- ibmtr_reset_timer(&(ti->tr_timer), dev);/*BMS try to reopen*/
- spin_unlock(&(ti->lock));
- return IRQ_HANDLED;
- }
- if (readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN)
- & (TCR_INT | ERR_INT | ACCESS_INT)) {
- DPRINTK("adapter error: ISRP_EVEN : %02x\n",
- (int)readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRP_EVEN));
- writeb(~(TCR_INT | ERR_INT | ACCESS_INT),
- ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
- status= readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRA_EVEN);/*BMS*/
- DPRINTK("ISRA_EVEN == 0x02%x\n",status);/*BMS*/
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
-#ifdef ENABLE_PAGING
- writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
-#endif
- spin_unlock(&(ti->lock));
- return IRQ_HANDLED;
- }
- if (status & SRB_RESP_INT) { /* SRB response */
- SET_PAGE(ti->srb_page);
-#if TR_VERBOSE
- DPRINTK("SRB resp: cmd=%02X rsp=%02X\n",
- readb(ti->srb), readb(ti->srb + RETCODE_OFST));
-#endif
- switch (readb(ti->srb)) { /* SRB command check */
- case XMIT_DIR_FRAME:{
- unsigned char xmit_ret_code;
- xmit_ret_code = readb(ti->srb + RETCODE_OFST);
- if (xmit_ret_code == 0xff) break;
- DPRINTK("error on xmit_dir_frame request: %02X\n",
- xmit_ret_code);
- if (ti->current_skb) {
- dev_kfree_skb_irq(ti->current_skb);
- ti->current_skb = NULL;
- }
- /*dev->tbusy = 0;*/
- netif_wake_queue(dev);
- if (ti->readlog_pending)
- ibmtr_readlog(dev);
- break;
- }
- case XMIT_UI_FRAME:{
- unsigned char xmit_ret_code;
-
- xmit_ret_code = readb(ti->srb + RETCODE_OFST);
- if (xmit_ret_code == 0xff) break;
- DPRINTK("error on xmit_ui_frame request: %02X\n",
- xmit_ret_code);
- if (ti->current_skb) {
- dev_kfree_skb_irq(ti->current_skb);
- ti->current_skb = NULL;
- }
- netif_wake_queue(dev);
- if (ti->readlog_pending)
- ibmtr_readlog(dev);
- break;
- }
- case DIR_OPEN_ADAPTER:
- dir_open_adapter(dev);
- break;
- case DLC_OPEN_SAP:
- if (readb(ti->srb + RETCODE_OFST)) {
- DPRINTK("open_sap failed: ret_code = %02X, "
- "retrying\n",
- (int) readb(ti->srb + RETCODE_OFST));
- ti->open_action = REOPEN;
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- break;
- }
- ti->exsap_station_id = readw(ti->srb + STATION_ID_OFST);
- ti->sap_status = OPEN;/* TR adapter is now available */
- if (ti->open_mode==MANUAL){
- wake_up(&ti->wait_for_reset);
- break;
- }
- netif_wake_queue(dev);
- netif_carrier_on(dev);
- break;
- case DIR_INTERRUPT:
- case DIR_MOD_OPEN_PARAMS:
- case DIR_SET_GRP_ADDR:
- case DIR_SET_FUNC_ADDR:
- case DLC_CLOSE_SAP:
- if (readb(ti->srb + RETCODE_OFST))
- DPRINTK("error on %02X: %02X\n",
- (int) readb(ti->srb + COMMAND_OFST),
- (int) readb(ti->srb + RETCODE_OFST));
- break;
- case DIR_READ_LOG:
- if (readb(ti->srb + RETCODE_OFST)){
- DPRINTK("error on dir_read_log: %02X\n",
- (int) readb(ti->srb + RETCODE_OFST));
- netif_wake_queue(dev);
- break;
- }
-#if IBMTR_DEBUG_MESSAGES
-
-#define LINE_ERRORS_OFST 0
-#define INTERNAL_ERRORS_OFST 1
-#define BURST_ERRORS_OFST 2
-#define AC_ERRORS_OFST 3
-#define ABORT_DELIMITERS_OFST 4
-#define LOST_FRAMES_OFST 6
-#define RECV_CONGEST_COUNT_OFST 7
-#define FRAME_COPIED_ERRORS_OFST 8
-#define FREQUENCY_ERRORS_OFST 9
-#define TOKEN_ERRORS_OFST 10
-
- DPRINTK("Line errors %02X, Internal errors %02X, "
- "Burst errors %02X\n" "A/C errors %02X, "
- "Abort delimiters %02X, Lost frames %02X\n"
- "Receive congestion count %02X, "
- "Frame copied errors %02X\nFrequency errors %02X, "
- "Token errors %02X\n",
- (int) readb(ti->srb + LINE_ERRORS_OFST),
- (int) readb(ti->srb + INTERNAL_ERRORS_OFST),
- (int) readb(ti->srb + BURST_ERRORS_OFST),
- (int) readb(ti->srb + AC_ERRORS_OFST),
- (int) readb(ti->srb + ABORT_DELIMITERS_OFST),
- (int) readb(ti->srb + LOST_FRAMES_OFST),
- (int) readb(ti->srb + RECV_CONGEST_COUNT_OFST),
- (int) readb(ti->srb + FRAME_COPIED_ERRORS_OFST),
- (int) readb(ti->srb + FREQUENCY_ERRORS_OFST),
- (int) readb(ti->srb + TOKEN_ERRORS_OFST));
-#endif
- netif_wake_queue(dev);
- break;
- default:
- DPRINTK("Unknown command %02X encountered\n",
- (int) readb(ti->srb));
- } /* end switch SRB command check */
- writeb(~SRB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
- } /* if SRB response */
- if (status & ASB_FREE_INT) { /* ASB response */
- SET_PAGE(ti->asb_page);
-#if TR_VERBOSE
- DPRINTK("ASB resp: cmd=%02X\n", readb(ti->asb));
-#endif
-
- switch (readb(ti->asb)) { /* ASB command check */
- case REC_DATA:
- case XMIT_UI_FRAME:
- case XMIT_DIR_FRAME:
- break;
- default:
- DPRINTK("unknown command in asb %02X\n",
- (int) readb(ti->asb));
- } /* switch ASB command check */
- if (readb(ti->asb + 2) != 0xff) /* checks ret_code */
- DPRINTK("ASB error %02X in cmd %02X\n",
- (int) readb(ti->asb + 2), (int) readb(ti->asb));
- writeb(~ASB_FREE_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
- } /* if ASB response */
-
-#define STATUS_OFST 6
-#define NETW_STATUS_OFST 6
-
- if (status & ARB_CMD_INT) { /* ARB response */
- SET_PAGE(ti->arb_page);
-#if TR_VERBOSE
- DPRINTK("ARB resp: cmd=%02X\n", readb(ti->arb));
-#endif
-
- switch (readb(ti->arb)) { /* ARB command check */
- case DLC_STATUS:
- DPRINTK("DLC_STATUS new status: %02X on station %02X\n",
- ntohs(readw(ti->arb + STATUS_OFST)),
- ntohs(readw(ti->arb+ STATION_ID_OFST)));
- break;
- case REC_DATA:
- tr_rx(dev);
- break;
- case RING_STAT_CHANGE:{
- unsigned short ring_status;
- ring_status= ntohs(readw(ti->arb + NETW_STATUS_OFST));
- if (ibmtr_debug_trace & TRC_INIT)
- DPRINTK("Ring Status Change...(0x%x)\n",
- ring_status);
- if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){
- netif_stop_queue(dev);
- netif_carrier_off(dev);
- DPRINTK("Remove received, or Auto-removal error"
- ", or Lobe fault\n");
- DPRINTK("We'll try to reopen the closed adapter"
- " after a %d second delay.\n",
- TR_RETRY_INTERVAL/HZ);
- /*I was confused: I saw the TR reopening but */
- /*forgot:with an RJ45 in an RJ45/ICS adapter */
- /*but adapter not in the ring, the TR will */
- /* open, and then soon close and come here. */
- ti->open_mode = AUTOMATIC;
- ti->open_status = CLOSED; /*12/2000 BMS*/
- ti->open_action = REOPEN;
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- } else if (ring_status & LOG_OVERFLOW) {
- if(netif_queue_stopped(dev))
- ti->readlog_pending = 1;
- else
- ibmtr_readlog(dev);
- }
- break;
- }
- case XMIT_DATA_REQ:
- tr_tx(dev);
- break;
- default:
- DPRINTK("Unknown command %02X in arb\n",
- (int) readb(ti->arb));
- break;
- } /* switch ARB command check */
- writeb(~ARB_CMD_INT, ti->mmio+ ACA_OFFSET+ACA_RESET + ISRP_ODD);
- writeb(ARB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- } /* if ARB response */
- if (status & SSB_RESP_INT) { /* SSB response */
- unsigned char retcode;
- SET_PAGE(ti->ssb_page);
-#if TR_VERBOSE
- DPRINTK("SSB resp: cmd=%02X rsp=%02X\n",
- readb(ti->ssb), readb(ti->ssb + 2));
-#endif
-
- switch (readb(ti->ssb)) { /* SSB command check */
- case XMIT_DIR_FRAME:
- case XMIT_UI_FRAME:
- retcode = readb(ti->ssb + 2);
- if (retcode && (retcode != 0x22))/* checks ret_code */
- DPRINTK("xmit ret_code: %02X xmit error code: "
- "%02X\n",
- (int)retcode, (int)readb(ti->ssb + 6));
- else
- dev->stats.tx_packets++;
- break;
- case XMIT_XID_CMD:
- DPRINTK("xmit xid ret_code: %02X\n",
- (int) readb(ti->ssb + 2));
- default:
- DPRINTK("Unknown command %02X in ssb\n",
- (int) readb(ti->ssb));
- } /* SSB command check */
- writeb(~SSB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
- writeb(SSB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- } /* if SSB response */
-#ifdef ENABLE_PAGING
- writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
-#endif
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- spin_unlock(&(ti->lock));
- return IRQ_HANDLED;
-} /*tok_interrupt */
-
-/*****************************************************************************/
-
-#define INIT_STATUS_OFST 1
-#define INIT_STATUS_2_OFST 2
-#define ENCODED_ADDRESS_OFST 8
-
-static void initial_tok_int(struct net_device *dev)
-{
-
- __u32 encoded_addr, hw_encoded_addr;
- struct tok_info *ti;
- unsigned char init_status; /*BMS 12/2000*/
-
- ti = netdev_priv(dev);
-
- ti->do_tok_int = NOT_FIRST;
-
- /* we assign the shared-ram address for ISA devices */
- writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
-#ifndef PCMCIA
- ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
-#endif
- ti->init_srb = map_address(ti,
- ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)),
- &ti->init_srb_page);
- if (ti->page_mask && ti->avail_shared_ram == 127) {
- void __iomem *last_512;
- __u8 last_512_page=0;
- int i;
- last_512 = map_address(ti, 0xfe00, &last_512_page);
- /* initialize high section of ram (if necessary) */
- SET_PAGE(last_512_page);
- for (i = 0; i < 512; i++)
- writeb(0, last_512 + i);
- }
- SET_PAGE(ti->init_srb_page);
-
-#if TR_VERBOSE
- {
- int i;
-
- DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page);
- DPRINTK("init_srb(%p):", ti->init_srb );
- for (i = 0; i < 20; i++)
- printk("%02X ", (int) readb(ti->init_srb + i));
- printk("\n");
- }
-#endif
-
- hw_encoded_addr = readw(ti->init_srb + ENCODED_ADDRESS_OFST);
- encoded_addr = ntohs(hw_encoded_addr);
- init_status= /*BMS 12/2000 check for shallow mode possibility (Turbo)*/
- readb(ti->init_srb+offsetof(struct srb_init_response,init_status));
- /*printk("Initial interrupt: init_status= 0x%02x\n",init_status);*/
- ti->ring_speed = init_status & 0x01 ? 16 : 4;
- DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n",
- ti->ring_speed, (unsigned int)dev->mem_start);
- ti->auto_speedsave = (readb(ti->init_srb+INIT_STATUS_2_OFST) & 4) != 0;
-
- if (ti->open_mode == MANUAL) wake_up(&ti->wait_for_reset);
- else tok_open_adapter((unsigned long)dev);
-
-} /*initial_tok_int() */
-
-/*****************************************************************************/
-
-#define CMD_CORRELATE_OFST 1
-#define DHB_ADDRESS_OFST 6
-
-#define FRAME_LENGTH_OFST 6
-#define HEADER_LENGTH_OFST 8
-#define RSAP_VALUE_OFST 9
-
-static void tr_tx(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
- struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data;
- unsigned int hdr_len;
- __u32 dhb=0,dhb_base;
- void __iomem *dhbuf = NULL;
- unsigned char xmit_command;
- int i,dhb_len=0x4000,src_len,src_offset;
- struct trllc *llc;
- struct srb_xmit xsrb;
- __u8 dhb_page = 0;
- __u8 llc_ssap;
-
- SET_PAGE(ti->asb_page);
-
- if (readb(ti->asb+RETCODE_OFST) != 0xFF) DPRINTK("ASB not free !!!\n");
-
- /* in providing the transmit interrupts, is telling us it is ready for
- data and providing a shared memory address for us to stuff with data.
- Here we compute the effective address where we will place data.
- */
- SET_PAGE(ti->arb_page);
- dhb=dhb_base=ntohs(readw(ti->arb + DHB_ADDRESS_OFST));
- if (ti->page_mask) {
- dhb_page = (dhb_base >> 8) & ti->page_mask;
- dhb=dhb_base & ~(ti->page_mask << 8);
- }
- dhbuf = ti->sram_virt + dhb;
-
- /* Figure out the size of the 802.5 header */
- if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */
- hdr_len = sizeof(struct trh_hdr) - TR_MAXRIFLEN;
- else
- hdr_len = ((ntohs(trhdr->rcf) & TR_RCF_LEN_MASK) >> 8)
- + sizeof(struct trh_hdr) - TR_MAXRIFLEN;
-
- llc = (struct trllc *) (ti->current_skb->data + hdr_len);
-
- llc_ssap = llc->ssap;
- SET_PAGE(ti->srb_page);
- memcpy_fromio(&xsrb, ti->srb, sizeof(xsrb));
- SET_PAGE(ti->asb_page);
- xmit_command = xsrb.command;
-
- writeb(xmit_command, ti->asb + COMMAND_OFST);
- writew(xsrb.station_id, ti->asb + STATION_ID_OFST);
- writeb(llc_ssap, ti->asb + RSAP_VALUE_OFST);
- writeb(xsrb.cmd_corr, ti->asb + CMD_CORRELATE_OFST);
- writeb(0, ti->asb + RETCODE_OFST);
- if ((xmit_command == XMIT_XID_CMD) || (xmit_command == XMIT_TEST_CMD)) {
- writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST);
- writeb(0x0e, ti->asb + HEADER_LENGTH_OFST);
- SET_PAGE(dhb_page);
- writeb(AC, dhbuf);
- writeb(LLC_FRAME, dhbuf + 1);
- for (i = 0; i < TR_ALEN; i++)
- writeb((int) 0x0FF, dhbuf + i + 2);
- for (i = 0; i < TR_ALEN; i++)
- writeb(0, dhbuf + i + TR_ALEN + 2);
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- return;
- }
- /*
- * the token ring packet is copied from sk_buff to the adapter
- * buffer identified in the command data received with the interrupt.
- */
- writeb(hdr_len, ti->asb + HEADER_LENGTH_OFST);
- writew(htons(ti->current_skb->len), ti->asb + FRAME_LENGTH_OFST);
- src_len=ti->current_skb->len;
- src_offset=0;
- dhb=dhb_base;
- while(1) {
- if (ti->page_mask) {
- dhb_page=(dhb >> 8) & ti->page_mask;
- dhb=dhb & ~(ti->page_mask << 8);
- dhb_len=0x4000-dhb; /* remaining size of this page */
- }
- dhbuf = ti->sram_virt + dhb;
- SET_PAGE(dhb_page);
- if (src_len > dhb_len) {
- memcpy_toio(dhbuf,&ti->current_skb->data[src_offset],
- dhb_len);
- src_len -= dhb_len;
- src_offset += dhb_len;
- dhb_base+=dhb_len;
- dhb=dhb_base;
- continue;
- }
- memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len);
- break;
- }
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- dev->stats.tx_bytes += ti->current_skb->len;
- dev_kfree_skb_irq(ti->current_skb);
- ti->current_skb = NULL;
- netif_wake_queue(dev);
- if (ti->readlog_pending)
- ibmtr_readlog(dev);
-} /*tr_tx */
-
-/*****************************************************************************/
-
-
-#define RECEIVE_BUFFER_OFST 6
-#define LAN_HDR_LENGTH_OFST 8
-#define DLC_HDR_LENGTH_OFST 9
-
-#define DSAP_OFST 0
-#define SSAP_OFST 1
-#define LLC_OFST 2
-#define PROTID_OFST 3
-#define ETHERTYPE_OFST 6
-
-static void tr_rx(struct net_device *dev)
-{
- struct tok_info *ti = netdev_priv(dev);
- __u32 rbuffer;
- void __iomem *rbuf, *rbufdata, *llc;
- __u8 rbuffer_page = 0;
- unsigned char *data;
- unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
- unsigned char dlc_hdr_len;
- struct sk_buff *skb;
- unsigned int skb_size = 0;
- int IPv4_p = 0;
- unsigned int chksum = 0;
- struct iphdr *iph;
- struct arb_rec_req rarb;
-
- SET_PAGE(ti->arb_page);
- memcpy_fromio(&rarb, ti->arb, sizeof(rarb));
- rbuffer = ntohs(rarb.rec_buf_addr) ;
- rbuf = map_address(ti, rbuffer, &rbuffer_page);
-
- SET_PAGE(ti->asb_page);
-
- if (readb(ti->asb + RETCODE_OFST) !=0xFF) DPRINTK("ASB not free !!!\n");
-
- writeb(REC_DATA, ti->asb + COMMAND_OFST);
- writew(rarb.station_id, ti->asb + STATION_ID_OFST);
- writew(rarb.rec_buf_addr, ti->asb + RECEIVE_BUFFER_OFST);
-
- lan_hdr_len = rarb.lan_hdr_len;
- if (lan_hdr_len > sizeof(struct trh_hdr)) {
- DPRINTK("Linux cannot handle greater than 18 bytes RIF\n");
- return;
- } /*BMS I added this above just to be very safe */
- dlc_hdr_len = readb(ti->arb + DLC_HDR_LENGTH_OFST);
- hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
-
- SET_PAGE(rbuffer_page);
- llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len;
-
-#if TR_VERBOSE
- DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
- (__u32) offsetof(struct rec_buf, data), (unsigned int) lan_hdr_len);
- DPRINTK("llc: %08X rec_buf_addr: %04X dev->mem_start: %lX\n",
- llc, ntohs(rarb.rec_buf_addr), dev->mem_start);
- DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, "
- "ethertype: %04X\n",
- (int) readb(llc + DSAP_OFST), (int) readb(llc + SSAP_OFST),
- (int) readb(llc + LLC_OFST), (int) readb(llc + PROTID_OFST),
- (int) readb(llc+PROTID_OFST+1),(int)readb(llc+PROTID_OFST + 2),
- (int) ntohs(readw(llc + ETHERTYPE_OFST)));
-#endif
- if (readb(llc + offsetof(struct trllc, llc)) != UI_CMD) {
- SET_PAGE(ti->asb_page);
- writeb(DATA_LOST, ti->asb + RETCODE_OFST);
- dev->stats.rx_dropped++;
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- return;
- }
- length = ntohs(rarb.frame_len);
- if (readb(llc + DSAP_OFST) == EXTENDED_SAP &&
- readb(llc + SSAP_OFST) == EXTENDED_SAP &&
- length >= hdr_len) IPv4_p = 1;
-#if TR_VERBOSE
-#define SADDR_OFST 8
-#define DADDR_OFST 2
-
- if (!IPv4_p) {
-
- void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data);
- u8 saddr[6];
- u8 daddr[6];
- int i;
- for (i = 0 ; i < 6 ; i++)
- saddr[i] = readb(trhhdr + SADDR_OFST + i);
- for (i = 0 ; i < 6 ; i++)
- daddr[i] = readb(trhhdr + DADDR_OFST + i);
- DPRINTK("Probably non-IP frame received.\n");
- DPRINTK("ssap: %02X dsap: %02X "
- "saddr: %pM daddr: %pM\n",
- readb(llc + SSAP_OFST), readb(llc + DSAP_OFST),
- saddr, daddr);
- }
-#endif
-
- /*BMS handle the case she comes in with few hops but leaves with many */
- skb_size=length-lan_hdr_len+sizeof(struct trh_hdr)+sizeof(struct trllc);
-
- if (!(skb = dev_alloc_skb(skb_size))) {
- DPRINTK("out of memory. frame dropped.\n");
- dev->stats.rx_dropped++;
- SET_PAGE(ti->asb_page);
- writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- return;
- }
- /*BMS again, if she comes in with few but leaves with many */
- skb_reserve(skb, sizeof(struct trh_hdr) - lan_hdr_len);
- skb_put(skb, length);
- data = skb->data;
- rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len)));
- rbufdata = rbuf + offsetof(struct rec_buf, data);
-
- if (IPv4_p) {
- /* Copy the headers without checksumming */
- memcpy_fromio(data, rbufdata, hdr_len);
-
- /* Watch for padded packets and bogons */
- iph= (struct iphdr *)(data+ lan_hdr_len + sizeof(struct trllc));
- ip_len = ntohs(iph->tot_len) - sizeof(struct iphdr);
- length -= hdr_len;
- if ((ip_len <= length) && (ip_len > 7))
- length = ip_len;
- data += hdr_len;
- rbuffer_len -= hdr_len;
- rbufdata += hdr_len;
- }
- /* Copy the payload... */
-#define BUFFER_POINTER_OFST 2
-#define BUFFER_LENGTH_OFST 6
- for (;;) {
- if (ibmtr_debug_trace&TRC_INITV && length < rbuffer_len)
- DPRINTK("CURIOUS, length=%d < rbuffer_len=%d\n",
- length,rbuffer_len);
- if (IPv4_p)
- chksum=csum_partial_copy_nocheck((void*)rbufdata,
- data,length<rbuffer_len?length:rbuffer_len,chksum);
- else
- memcpy_fromio(data, rbufdata, rbuffer_len);
- rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ;
- if (!rbuffer)
- break;
- rbuffer -= 2;
- length -= rbuffer_len;
- data += rbuffer_len;
- rbuf = map_address(ti, rbuffer, &rbuffer_page);
- SET_PAGE(rbuffer_page);
- rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST));
- rbufdata = rbuf + offsetof(struct rec_buf, data);
- }
-
- SET_PAGE(ti->asb_page);
- writeb(0, ti->asb + offsetof(struct asb_rec, ret_code));
-
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-
- dev->stats.rx_bytes += skb->len;
- dev->stats.rx_packets++;
-
- skb->protocol = tr_type_trans(skb, dev);
- if (IPv4_p) {
- skb->csum = chksum;
- skb->ip_summed = CHECKSUM_COMPLETE;
- }
- netif_rx(skb);
-} /*tr_rx */
-
-/*****************************************************************************/
-
-static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
-{
- tmr->expires = jiffies + TR_RETRY_INTERVAL;
- tmr->data = (unsigned long) dev;
- tmr->function = tok_rerun;
- init_timer(tmr);
- add_timer(tmr);
-}
-
-/*****************************************************************************/
-
-static void tok_rerun(unsigned long dev_addr)
-{
- struct net_device *dev = (struct net_device *)dev_addr;
- struct tok_info *ti = netdev_priv(dev);
-
- if ( ti->open_action == RESTART){
- ti->do_tok_int = FIRST_INT;
- outb(0, dev->base_addr + ADAPTRESETREL);
-#ifdef ENABLE_PAGING
- if (ti->page_mask)
- writeb(SRPR_ENABLE_PAGING,
- ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
-#endif
-
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- } else
- tok_open_adapter(dev_addr);
-}
-
-/*****************************************************************************/
-
-static void ibmtr_readlog(struct net_device *dev)
-{
- struct tok_info *ti;
-
- ti = netdev_priv(dev);
-
- ti->readlog_pending = 0;
- SET_PAGE(ti->srb_page);
- writeb(DIR_READ_LOG, ti->srb);
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-
- netif_stop_queue(dev);
-
-}
-
-/*****************************************************************************/
-
-static int ibmtr_change_mtu(struct net_device *dev, int mtu)
-{
- struct tok_info *ti = netdev_priv(dev);
-
- if (ti->ring_speed == 16 && mtu > ti->maxmtu16)
- return -EINVAL;
- if (ti->ring_speed == 4 && mtu > ti->maxmtu4)
- return -EINVAL;
- dev->mtu = mtu;
- return 0;
-}
-
-/*****************************************************************************/
-#ifdef MODULE
-
-/* 3COM 3C619C supports 8 interrupts, 32 I/O ports */
-static struct net_device *dev_ibmtr[IBMTR_MAX_ADAPTERS];
-static int io[IBMTR_MAX_ADAPTERS] = { 0xa20, 0xa24 };
-static int irq[IBMTR_MAX_ADAPTERS];
-static int mem[IBMTR_MAX_ADAPTERS];
-
-MODULE_LICENSE("GPL");
-
-module_param_array(io, int, NULL, 0);
-module_param_array(irq, int, NULL, 0);
-module_param_array(mem, int, NULL, 0);
-
-static int __init ibmtr_init(void)
-{
- int i;
- int count=0;
-
- find_turbo_adapters(io);
-
- for (i = 0; i < IBMTR_MAX_ADAPTERS && io[i]; i++) {
- struct net_device *dev;
- irq[i] = 0;
- mem[i] = 0;
- dev = alloc_trdev(sizeof(struct tok_info));
- if (dev == NULL) {
- if (i == 0)
- return -ENOMEM;
- break;
- }
- dev->base_addr = io[i];
- dev->irq = irq[i];
- dev->mem_start = mem[i];
-
- if (ibmtr_probe_card(dev)) {
- free_netdev(dev);
- continue;
- }
- dev_ibmtr[i] = dev;
- count++;
- }
- if (count) return 0;
- printk("ibmtr: register_netdev() returned non-zero.\n");
- return -EIO;
-}
-module_init(ibmtr_init);
-
-static void __exit ibmtr_cleanup(void)
-{
- int i;
-
- for (i = 0; i < IBMTR_MAX_ADAPTERS; i++){
- if (!dev_ibmtr[i])
- continue;
- unregister_netdev(dev_ibmtr[i]);
- ibmtr_cleanup_card(dev_ibmtr[i]);
- free_netdev(dev_ibmtr[i]);
- }
-}
-module_exit(ibmtr_cleanup);
-#endif