patch-2.3.21 linux/drivers/net/ibmtr.c
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- Lines: 1770
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.3.20/linux/drivers/net/ibmtr.c
- Orig date:
Fri Sep 10 23:57:30 1999
diff -u --recursive --new-file v2.3.20/linux/drivers/net/ibmtr.c linux/drivers/net/ibmtr.c
@@ -1,1769 +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 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@cesdis.gsfc.nasa.gov) 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
- *
- * 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)
- */
-
-/* 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
-
-#ifdef PCMCIA
-#define MODULE
-#endif
-
-#include <linux/module.h>
-
-#ifdef PCMCIA
-#undef MODULE
-#endif
-
-#define NO_AUTODETECT 1
-#undef NO_AUTODETECT
-#undef ENABLE_PAGING
-
-
-#define FALSE 0
-#define TRUE (!FALSE)
-
-/* changes the output format of driver initialisation */
-#define TR_NEWFORMAT 1
-#define TR_VERBOSE 0
-
-/* some 95 OS send many non UI frame; this allow removing the warning */
-#define TR_FILTERNONUI 1
-
-/* version and credits */
-static char *version =
-"ibmtr.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";
-
-static char pcchannelid[] = {
- 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[] = {
- 0x04, 0x0d, 0x04, 0x01,
- 0x05, 0x02, 0x05, 0x03,
- 0x03, 0x06, 0x03, 0x03,
- 0x05, 0x08, 0x03, 0x04,
- 0x03, 0x05, 0x03, 0x01,
- 0x03, 0x08, 0x02, 0x00
-};
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/timer.h>
-#include <linux/in.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/skbuff.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/netdevice.h>
-#include <linux/trdevice.h>
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <net/checksum.h>
-
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-
-#include "ibmtr.h"
-
-
-#define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args)
-#define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args)
-#define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
-#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
-
-#if TR_NEWFORMAT
-/* this allows displaying full adapter information */
-
-const char *channel_def[] __initdata = {
- "ISA", "MCA", "ISA P&P"
-};
-
-char __init *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)";
- };
-};
-#endif
-
-#if !TR_NEWFORMAT
-unsigned char ibmtr_debug_trace=1; /* Patch or otherwise alter to
- control tokenring tracing. */
-#else
-unsigned char ibmtr_debug_trace=0;
-#endif
-#define TRC_INIT 0x01 /* Trace initialization & PROBEs */
-#define TRC_INITV 0x02 /* verbose init trace points */
-
-int ibmtr_probe(struct net_device *dev);
-static int ibmtr_probe1(struct net_device *dev, int ioaddr);
-static unsigned char get_sram_size(struct tok_info *adapt_info);
-#ifdef PCMCIA
-extern unsigned char pcmcia_reality_check(unsigned char gss);
-#endif
-static int tok_init_card(struct net_device *dev);
-void tok_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static int trdev_init(struct net_device *dev);
-static void initial_tok_int(struct net_device *dev);
-static void open_sap(unsigned char type,struct net_device *dev);
-void tok_open_adapter(unsigned long dev_addr);
-static void tr_rx(struct net_device *dev);
-static void tr_tx(struct net_device *dev);
-static int tok_open(struct net_device *dev);
-static int tok_close(struct net_device *dev);
-static int tok_send_packet(struct sk_buff *skb, struct net_device *dev);
-static struct net_device_stats * tok_get_stats(struct net_device *dev);
-void ibmtr_readlog(struct net_device *dev);
-void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev);
-int ibmtr_change_mtu(struct net_device *dev, int mtu);
-
-static unsigned int ibmtr_portlist[] __initdata = {
- 0xa20, 0xa24, 0
-};
-
-static __u32 ibmtr_mem_base = 0xd0000;
-
-static void __init 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 __init HWPrtChanID (__u32 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");
-}
-
-/*
- * 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.
- * III. Initialize adapter operation
- *
- * We expect ibmtr_probe to be called once for each device entry
- * which references it.
- */
-
-int __init ibmtr_probe(struct net_device *dev)
-{
- int i;
- int base_addr = dev ? dev->base_addr : 0;
-
- if (base_addr > 0x1ff)
- {
- /*
- * Check a single specified location.
- */
-
- if (ibmtr_probe1(dev, base_addr))
- {
-#ifndef MODULE
-#ifndef PCMCIA
- tr_freedev(dev);
-#endif
-#endif
- return -ENODEV;
- } else
- return 0;
- }
- else if (base_addr != 0) /* Don't probe at all. */
- return -ENXIO;
-
- for (i = 0; ibmtr_portlist[i]; i++)
- {
- int ioaddr = ibmtr_portlist[i];
- if (check_region(ioaddr, IBMTR_IO_EXTENT))
- continue;
- if (ibmtr_probe1(dev, ioaddr)) {
-#ifndef MODULE
-#ifndef PCMCIA
- tr_freedev(dev);
-#endif
-#endif
- } else
- return 0;
- }
-
- return -ENODEV;
-}
-
-static int __init ibmtr_probe1(struct net_device *dev, int PIOaddr)
-{
- unsigned char segment=0, intr=0, irq=0, i=0, j=0, cardpresent=NOTOK,temp=0;
- __u32 t_mmio=0;
- struct tok_info *ti=0;
- __u32 cd_chanid;
- unsigned char *tchanid, ctemp;
- unsigned long timeout;
-
-#ifndef MODULE
-#ifndef PCMCIA
- dev = init_trdev(dev,0);
-#endif
-#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);
-
- /*
- * Out of range values so we'll assume non-existent IO device
- */
-
- if (segment < 0x40 || segment > 0xe0)
- return -ENODEV;
-
- /*
- * Compute the linear base address of the MMIO area
- * as LINUX doesn't care about segments
- */
-
- t_mmio=(((__u32)(segment & 0xfc) << 11) + 0x80000);
- intr = segment & 0x03; /* low bits is coded interrupt # */
- if (ibmtr_debug_trace & TRC_INIT)
- DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %08X 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
- */
-
- 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]) {
- cardpresent=NOTOK; /* match failed, not TR card */
- 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) {
- DPRINTK("Channel ID string not found for PIOaddr: %4hx\n", PIOaddr);
- DPRINTK("Expected for ISA: "); PrtChanID(pcchannelid,1);
- DPRINTK(" found: "); HWPrtChanID(cd_chanid,2);
- DPRINTK("Expected for MCA: "); PrtChanID(mcchannelid,1);
- }
- return -ENODEV;
- }
-
- /* Now, allocate some of the pl0 buffers for this driver.. */
-
- /* If called from PCMCIA, ti is already set up, so no need to
- waste the memory, just use the existing structure */
-
-#ifndef PCMCIA
- ti = (struct tok_info *)kmalloc(sizeof(struct tok_info), GFP_KERNEL);
- if (ti == NULL)
- return -ENOMEM;
-
- memset(ti, 0, sizeof(struct tok_info));
-#else
- ti = dev->priv ;
-#endif
- ti->mmio= t_mmio;
- ti->readlog_pending = 0;
- init_waitqueue_head(&ti->wait_for_tok_int);
- init_waitqueue_head(&ti->wait_for_reset);
-
- dev->priv = ti; /* this seems like the logical use of the
- field ... let's try some empirical tests
- using the token-info structure -- that
- should fit with out future hope of multiple
- adapter support as well /dwm */
-
- /* if PCMCIA, then the card is recognized as TR_ISAPNP
- * and there is no need to set up the interrupt, it is already done. */
-
-#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->global_int_enable=GLOBAL_INT_ENABLE+((irq==9) ? 2 : irq);
- ti->adapter_int_enable=PIOaddr+ADAPTINTREL;
- ti->sram=0;
-#if !TR_NEWFORMAT
- DPRINTK("ti->global_int_enable: %04X\n",ti->global_int_enable);
-#endif
- 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=((__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12);
- break;
- case TR_ISAPNP:
- if (intr==0)
- irq=9;
- if (intr==1)
- irq=3;
- if (intr==2)
- irq=10;
- if (intr==3)
- irq=11;
- timeout = jiffies + TR_SPIN_INTERVAL;
- while(!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN))
- if (time_after(jiffies, timeout)) {
- DPRINTK("Hardware timeout during initialization.\n");
- kfree_s(ti, sizeof(struct tok_info));
- return -ENODEV;
- }
-
- ti->sram=((__u32)readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)<<12);
- ti->global_int_enable=PIOaddr+ADAPTINTREL;
- ti->adapter_int_enable=PIOaddr+ADAPTINTREL;
- break;
- }
-#endif
-
- if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
- DPRINTK("irq=%d",irq);
- if (ibmtr_debug_trace & TRC_INITV) { /* full chat in verbose only */
- DPRINTK(", ti->mmio=%08X",ti->mmio);
- printk(", segment=%02X",segment);
- }
- printk(".\n");
- }
-
- /* Get hw address of token ring card */
-#if !TR_NEWFORMAT
- DPRINTK("hw address: ");
-#endif
- j=0;
- for (i=0; i<0x18; i=i+2)
- {
- /* technical reference states to do this */
- temp = readb(ti->mmio + AIP + i) & 0x0f;
-#if !TR_NEWFORMAT
- printk("%1X",ti->hw_address[j]=temp);
-#else
- ti->hw_address[j]=temp;
-#endif
- if(j&1)
- dev->dev_addr[(j/2)]=ti->hw_address[j]+(ti->hw_address[j-1]<<4);
- ++j;
- }
-#ifndef TR_NEWFORMAT
- printk("\n");
-#endif
-
- /* 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 ? */
-#ifdef PCMCIA
- ti->avail_shared_ram = pcmcia_reality_check(get_sram_size(ti));
- ibmtr_mem_base = ti->sram_base << 12 ;
-#else
- ti->avail_shared_ram = get_sram_size(ti);
-#endif
- /* 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;
- }
-
-#if !TR_NEWFORMAT
- DPRINTK("atype=%x, drate=%x, trel=%x, asram=%dK, srp=%x, "
- "dhb(4mb=%x, 16mb=%x)\n",ti->adapter_type,
- ti->data_rate, ti->token_release, ti->avail_shared_ram/2,
- ti->shared_ram_paging, ti->dhb_size4mb, ti->dhb_size16mb);
-#endif
-
- /* 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=1<<((((readb(ti->mmio+ ACA_OFFSET + ACA_RW + RRR_ODD)) >>2) & 0x03) + 4);
- ti->page_mask=0;
- if (ti->shared_ram_paging == 0xf) { /* No paging in adapter */
- ti->mapped_ram_size = ti->avail_shared_ram;
- } else {
-#ifdef ENABLE_PAGING
- unsigned char pg_size;
-#endif
-
-#if !TR_NEWFORMAT
- DPRINTK("shared ram page size: %dK\n",ti->mapped_ram_size/2);
-#endif
-#ifdef ENABLE_PAGING
- 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:
- ti->page_mask=(ti->mapped_ram_size==32) ? 0xc0 : 0;
- ti->page_mask=(ti->mapped_ram_size==64) ? 0x80 : 0;
- DPRINTK("Dual size shared RAM page (code=0xC), don't support it!\n");
- /* nb/dwm: I did this because RRR (3,2) bits are documented as
- R/O and I can't find how to select which page size
- Also, the above conditional statement sequence is invalid
- as page_mask will always be set by the second stmt */
- kfree_s(ti, sizeof(struct tok_info));
- return -ENODEV;
- break;
- default:
- DPRINTK("Unknown shared ram paging info %01X\n",ti->shared_ram_paging);
- kfree_s(ti, sizeof(struct tok_info));
- return -ENODEV;
- break;
- }
- if (ti->page_mask) {
- if (pg_size > ti->mapped_ram_size) {
- DPRINTK("Page size (%d) > mapped ram window (%d), can't page.\n",
- pg_size, ti->mapped_ram_size);
- ti->page_mask = 0; /* reset paging */
- } else {
- ti->mapped_ram_size=ti->avail_shared_ram;
- DPRINTK("Shared RAM paging enabled. Page size : %uK\n",
- ((ti->page_mask^ 0xff)+1)>>2);
- }
-#endif
- }
- /* finish figuring the shared RAM address */
- if (cardpresent==TR_ISA) {
- static __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) & 0x00000003;
- 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);
- kfree_s(ti, sizeof(struct tok_info));
- return -ENODEV;
- } else { /* seems cool, record what we have figured out */
- ti->sram_base = new_base >> 12;
- ibmtr_mem_base = chk_base;
- }
- }
-
-#if !TR_NEWFORMAT
- DPRINTK("Using %dK shared RAM\n",ti->mapped_ram_size/2);
-#endif
-
- /* The PCMCIA has already got the interrupt line and the io port,
- so no chance of anybody else getting it - MLP */
-
-#ifndef PCMCIA
- if (request_irq (dev->irq = irq, &tok_interrupt,0,"ibmtr", dev) != 0) {
- DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",irq);
- kfree_s(ti, sizeof(struct tok_info));
- return -ENODEV;
- }
-
- /*?? Now, allocate some of the PIO PORTs for this driver.. */
- request_region(PIOaddr,IBMTR_IO_EXTENT,"ibmtr"); /* record PIOaddr range as busy */
-#endif
-
-#if !TR_NEWFORMAT
- DPRINTK("%s",version); /* As we have passed card identification,
- let the world know we're here! */
-#else
-
- if (version) {
- printk("%s",version);
- version = NULL;
- }
- 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 : %02X:%02X:%02X:%02X:%02X:%02X\n",
- dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
- dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5]);
-#endif
- /* Calculate the maximum DHB we can use */
- switch (ti->mapped_ram_size) {
- case 16 : /* 8KB shared RAM */
- ti->dhb_size4mb = MIN(ti->dhb_size4mb, 2048);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4 = 2;
- ti->dhb_size16mb = MIN(ti->dhb_size16mb, 2048);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16 = 2;
- break;
- case 32 : /* 16KB shared RAM */
- ti->dhb_size4mb = MIN(ti->dhb_size4mb, 4464);
- ti->rbuf_len4 = 520;
- ti->rbuf_cnt4 = 9;
- ti->dhb_size16mb = MIN(ti->dhb_size16mb, 4096);
- ti->rbuf_len16 = 1032; /* 1024 usable */
- ti->rbuf_cnt16 = 4;
- break;
- case 64 : /* 32KB shared RAM */
- ti->dhb_size4mb = MIN(ti->dhb_size4mb, 4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4 = 6;
- ti->dhb_size16mb = MIN(ti->dhb_size16mb, 10240);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16 = 10;
- break;
- case 127 : /* 63KB shared RAM */
- ti->dhb_size4mb = MIN(ti->dhb_size4mb, 4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4 = 6;
- ti->dhb_size16mb = MIN(ti->dhb_size16mb, 16384);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16 = 16;
- break;
- case 128 : /* 64KB shared RAM */
- ti->dhb_size4mb = MIN(ti->dhb_size4mb, 4464);
- ti->rbuf_len4 = 1032;
- ti->rbuf_cnt4 = 6;
- ti->dhb_size16mb = MIN(ti->dhb_size16mb, 17960);
- ti->rbuf_len16 = 1032;
- ti->rbuf_cnt16 = 18;
- 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;
- }
-
- ti->maxmtu16 = (ti->rbuf_len16*ti->rbuf_cnt16)-((ti->rbuf_cnt16)<<3)-TR_HLEN;
- ti->maxmtu4 = (ti->rbuf_len4*ti->rbuf_cnt4)-((ti->rbuf_cnt4)<<3)-TR_HLEN;
- DPRINTK("Maximum MTU 16Mbps: %d, 4Mbps: %d\n",
- ti->maxmtu16, ti->maxmtu4);
-
- dev->base_addr=PIOaddr; /* set the value for device */
-
- trdev_init(dev);
- tok_init_card(dev);
-
- return 0; /* Return 0 to indicate we have found a Token Ring card. */
-}
-
-/* query the adapter for the size of shared RAM */
-
-static unsigned char __init 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)+4);
-}
-
-static int __init trdev_init(struct net_device *dev)
-{
- struct tok_info *ti=(struct tok_info *)dev->priv;
-
- ti->open_status = CLOSED;
-
- dev->init = tok_init_card;
- dev->open = tok_open;
- dev->stop = tok_close;
- dev->hard_start_xmit = tok_send_packet;
- dev->get_stats = tok_get_stats;
- dev->set_multicast_list = NULL;
- dev->change_mtu = ibmtr_change_mtu;
-
-#ifndef MODULE
-#ifndef PCMCIA
- tr_setup(dev);
-#endif
-#endif
- return 0;
-}
-
-
-
-static int tok_open(struct net_device *dev)
-{
- struct tok_info *ti=(struct tok_info *)dev->priv;
-
- /* init the spinlock */
- ti->lock = (spinlock_t) SPIN_LOCK_UNLOCKED;
-
- if (ti->open_status==CLOSED) tok_init_card(dev);
-
- if (ti->open_status==IN_PROGRESS) sleep_on(&ti->wait_for_reset);
-
- if (ti->open_status==SUCCESS) {
- dev->tbusy=0;
- dev->interrupt=0;
- dev->start=1;
- /* NEED to see smem size *AND* reset high 512 bytes if needed */
-
- MOD_INC_USE_COUNT;
-
- return 0;
- } else return -EAGAIN;
-
-}
-
-static int tok_close(struct net_device *dev)
-{
-
- struct tok_info *ti=(struct tok_info *) dev->priv;
-
- writeb(DIR_CLOSE_ADAPTER,
- ti->srb + offsetof(struct srb_close_adapter, command));
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-
- ti->open_status=CLOSED;
-
- sleep_on(&ti->wait_for_tok_int);
-
- if (readb(ti->srb + offsetof(struct srb_close_adapter, ret_code)))
- DPRINTK("close adapter failed: %02X\n",
- (int)readb(ti->srb + offsetof(struct srb_close_adapter, ret_code)));
-
- dev->start = 0;
-#ifdef PCMCIA
- ti->sram = 0 ;
-#endif
- DPRINTK("Adapter closed.\n");
- MOD_DEC_USE_COUNT;
-
- return 0;
-}
-
-void tok_interrupt (int irq, void *dev_id, struct pt_regs *regs)
-{
- unsigned char status;
- struct tok_info *ti;
- struct net_device *dev;
-
- dev = dev_id;
-#if TR_VERBOSE
- DPRINTK("Int from tok_driver, dev : %p\n",dev);
-#endif
- ti = (struct tok_info *) dev->priv;
- spin_lock(&(ti->lock));
-
- /* Disable interrupts till processing is finished */
- dev->interrupt=1;
- 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
- outb(0,ti->global_int_enable);
-
-
- switch (ti->do_tok_int) {
-
- case NOT_FIRST:
-
- /* Begin the regular 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);
-#ifdef PCMCIA
- /* Check if the PCMCIA card was pulled. */
- if (status == 0xFF)
- {
- DPRINTK("PCMCIA card removed.\n");
- spin_unlock(&(ti->lock));
- dev->interrupt = 0;
- return;
- }
-
- /* Check ISRP EVEN too. */
- if ( readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) == 0xFF)
- {
- DPRINTK("PCMCIA card removed.\n");
- spin_unlock(&(ti->lock));
- dev->interrupt = 0;
- return;
- }
-#endif
-
-
- if (status & ADAP_CHK_INT) {
-
- int i;
- __u32 check_reason;
-
- check_reason=ti->mmio + ntohs(readw(ti->sram + ACA_OFFSET + ACA_RW +WWCR_EVEN));
-
- 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);
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- dev->interrupt=0;
-
- } else 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);
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- dev->interrupt=0;
-
- } else if (status
- & (SRB_RESP_INT | ASB_FREE_INT | ARB_CMD_INT | SSB_RESP_INT)) {
- /* SRB, ASB, ARB or SSB response */
-
- if (status & SRB_RESP_INT) { /* SRB response */
-
- switch(readb(ti->srb)) { /* SRB command check */
-
- case XMIT_DIR_FRAME: {
- unsigned char xmit_ret_code;
-
- xmit_ret_code=readb(ti->srb + offsetof(struct srb_xmit, ret_code));
- if (xmit_ret_code != 0xff) {
- DPRINTK("error on xmit_dir_frame request: %02X\n",
- xmit_ret_code);
- if (ti->current_skb) {
- dev_kfree_skb(ti->current_skb);
- ti->current_skb=NULL;
- }
- dev->tbusy=0;
- if (ti->readlog_pending) ibmtr_readlog(dev);
- }
- }
- break;
-
- case XMIT_UI_FRAME: {
- unsigned char xmit_ret_code;
-
- xmit_ret_code=readb(ti->srb + offsetof(struct srb_xmit, ret_code));
- if (xmit_ret_code != 0xff) {
- DPRINTK("error on xmit_ui_frame request: %02X\n",
- xmit_ret_code);
- if (ti->current_skb) {
- dev_kfree_skb(ti->current_skb);
- ti->current_skb=NULL;
- }
- dev->tbusy=0;
- if (ti->readlog_pending) ibmtr_readlog(dev);
- }
- }
- break;
-
- case DIR_OPEN_ADAPTER: {
- unsigned char open_ret_code;
- __u16 open_error_code;
-
- ti->srb=ti->sram+ntohs(readw(ti->init_srb +offsetof(struct srb_open_response, srb_addr)));
- ti->ssb=ti->sram+ntohs(readw(ti->init_srb +offsetof(struct srb_open_response, ssb_addr)));
- ti->arb=ti->sram+ntohs(readw(ti->init_srb +offsetof(struct srb_open_response, arb_addr)));
- ti->asb=ti->sram+ntohs(readw(ti->init_srb +offsetof(struct srb_open_response, asb_addr)));
- ti->current_skb=NULL;
-
- open_ret_code = readb(ti->init_srb +offsetof(struct srb_open_response, ret_code));
- open_error_code = ntohs(readw(ti->init_srb +offsetof(struct srb_open_response, error_code)));
-
- if (open_ret_code==7) {
-
- if (!ti->auto_ringspeedsave && (open_error_code==0x24)) {
- DPRINTK("Open failed: Adapter speed must match ring "
- "speed if Automatic Ring Speed Save is disabled.\n");
- ti->open_status=FAILURE;
- wake_up(&ti->wait_for_reset);
- } else if (open_error_code==0x24)
- DPRINTK("Retrying open to adjust to ring speed.\n");
- else if ((open_error_code==0x2d) && ti->auto_ringspeedsave)
- DPRINTK("No signal detected for Auto Speed Detection.\n");
- else if (open_error_code==0x11)
- {
- if (ti->retry_count--)
- DPRINTK("Ring broken/disconnected, retrying...\n");
- else {
- DPRINTK("Ring broken/disconnected, open failed.\n");
- ti->open_status = FAILURE;
- }
- }
- else DPRINTK("Unrecoverable error: error code = %04x.\n",
- open_error_code);
-
- } else if (!open_ret_code) {
-#if !TR_NEWFORMAT
- DPRINTK("board opened...\n");
-#else
- DPRINTK("Adapter initialized and opened.\n");
-#endif
- writeb(~(SRB_RESP_INT),
- ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
- writeb(~(CMD_IN_SRB),
- ti->mmio + ACA_OFFSET + ACA_RESET + ISRA_ODD);
- open_sap(EXTENDED_SAP,dev);
-
- /* YdW probably hates me */
- goto skip_reset;
- } else
- DPRINTK("open failed: ret_code = %02X, retrying\n",
- open_ret_code);
-
- if (ti->open_status != FAILURE) {
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- }
-
- }
- break;
-
- case DIR_CLOSE_ADAPTER:
- wake_up(&ti->wait_for_tok_int);
- break;
-
- case DLC_OPEN_SAP:
- if (readb(ti->srb+offsetof(struct dlc_open_sap, ret_code))) {
- DPRINTK("open_sap failed: ret_code = %02X,retrying\n",
- (int)readb(ti->srb+offsetof(struct dlc_open_sap, ret_code)));
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- } else {
- ti->exsap_station_id=
- readw(ti->srb+offsetof(struct dlc_open_sap, station_id));
- ti->open_status=SUCCESS; /* TR adapter is now available */
- wake_up(&ti->wait_for_reset);
- }
- 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+offsetof(struct srb_interrupt, ret_code)))
- DPRINTK("error on %02X: %02X\n",
- (int)readb(ti->srb+offsetof(struct srb_interrupt, command)),
- (int)readb(ti->srb+offsetof(struct srb_interrupt, ret_code)));
- break;
-
- case DIR_READ_LOG:
- if (readb(ti->srb+offsetof(struct srb_read_log, ret_code)))
- DPRINTK("error on dir_read_log: %02X\n",
- (int)readb(ti->srb+offsetof(struct srb_read_log, ret_code)));
- else
- if (IBMTR_DEBUG_MESSAGES) {
- 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\n"
- "Frequency errors %02X, Token errors %02X\n",
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- line_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- internal_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- burst_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log, A_C_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- abort_delimiters)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- lost_frames)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- recv_congest_count)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- frame_copied_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- frequency_errors)),
- (int)readb(ti->srb+offsetof(struct srb_read_log,
- token_errors)));
- }
- dev->tbusy=0;
- break;
-
- default:
- DPRINTK("Unknown command %02X encountered\n",
- (int)readb(ti->srb));
-
- } /* SRB command check */
-
- writeb(~CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_RESET + ISRA_ODD);
- writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
-
- skip_reset:
- } /* SRB response */
-
- if (status & ASB_FREE_INT) { /* ASB response */
-
- 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));
-
- } /* 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);
-
- } /* ASB response */
-
- if (status & ARB_CMD_INT) { /* ARB response */
-
- switch (readb(ti->arb)) { /* ARB command check */
-
- case DLC_STATUS:
- DPRINTK("DLC_STATUS new status: %02X on station %02X\n",
- ntohs(readw(ti->arb + offsetof(struct arb_dlc_status, status))),
- ntohs(readw(ti->arb
- +offsetof(struct arb_dlc_status, station_id))));
- break;
-
- case REC_DATA:
- tr_rx(dev);
- break;
-
- case RING_STAT_CHANGE: {
- unsigned short ring_status;
-
- ring_status=ntohs(readw(ti->arb
- +offsetof(struct arb_ring_stat_change, ring_status)));
-
- if (ring_status & (SIGNAL_LOSS | LOBE_FAULT)) {
-
- DPRINTK("Signal loss/Lobe fault\n");
- DPRINTK("We try to reopen the adapter.\n");
- ibmtr_reset_timer(&(ti->tr_timer), dev);
- } else if (ring_status & (HARD_ERROR | XMIT_BEACON
- | AUTO_REMOVAL | REMOVE_RECV | RING_RECOVER))
- DPRINTK("New ring status: %02X\n", ring_status);
-
- if (ring_status & LOG_OVERFLOW) {
- if (dev->tbusy)
- 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;
-
- } /* 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);
-
- } /* ARB response */
-
- if (status & SSB_RESP_INT) { /* SSB response */
- unsigned char retcode;
- 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 ti->tr_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);
-
- } /* SSB response */
-
- } /* SRB, ARB, ASB or SSB response */
-
- dev->interrupt=0;
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- break;
-
- case FIRST_INT:
- initial_tok_int(dev);
- break;
-
- default:
- DPRINTK("Unexpected interrupt from tr adapter\n");
-
- }
- spin_unlock(&(ti->lock));
-}
-
-static void initial_tok_int(struct net_device *dev)
-{
-
- __u32 encoded_addr;
- __u32 hw_encoded_addr;
- struct tok_info *ti;
- ti=(struct tok_info *) dev->priv;
-
- ti->do_tok_int=NOT_FIRST;
-
-#ifndef TR_NEWFORMAT
- DPRINTK("Initial tok int received\n");
-#endif
-
- /* we assign the shared-ram address for ISA devices */
- if(!ti->sram) {
- writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
- ti->sram=((__u32)ti->sram_base << 12);
- }
- ti->init_srb=ti->sram
- +ntohs((unsigned short)readw(ti->mmio+ ACA_OFFSET + WRBR_EVEN));
- SET_PAGE(ntohs((unsigned short)readw(ti->mmio+ACA_OFFSET + WRBR_EVEN)));
-
- dev->mem_start = ti->sram;
- dev->mem_end = ti->sram + (ti->mapped_ram_size<<9) - 1;
-
-#if TR_VERBOSE
- {
- int i;
- DPRINTK("init_srb(%p):", ti->init_srb);
- for (i=0;i<17;i++) printk("%02X ", (int)readb(ti->init_srb+i));
- printk("\n");
- }
-#endif
-
- hw_encoded_addr = readw(ti->init_srb
- + offsetof(struct srb_init_response, encoded_address));
-
-#if !TR_NEWFORMAT
- DPRINTK("srb_init_response->encoded_address: %04X\n", hw_encoded_addr);
- DPRINTK("ntohs(srb_init_response->encoded_address): %04X\n",
- ntohs(hw_encoded_addr));
-#endif
-
- encoded_addr=(ti->sram + ntohs(hw_encoded_addr));
- ti->ring_speed = readb(ti->init_srb+offsetof(struct srb_init_response, init_status)) & 0x01 ? 16 : 4;
-#if !TR_NEWFORMAT
- DPRINTK("encoded addr (%04X,%04X,%08X): ", hw_encoded_addr,
- ntohs(hw_encoded_addr), encoded_addr);
-#else
- DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n",
- ti->ring_speed, ti->sram);
-#endif
-
- ti->auto_ringspeedsave=readb(ti->init_srb
- +offsetof(struct srb_init_response, init_status_2)) & 0x4 ? TRUE : FALSE;
-
-#if !TR_NEWFORMAT
- for(i=0;i<TR_ALEN;i++) {
- dev->dev_addr[i]=readb(encoded_addr + i);
- printk("%02X%s", dev->dev_addr[i], (i==TR_ALEN-1) ? "" : ":" );
- }
- printk("\n");
-#endif
-
- tok_open_adapter((unsigned long)dev);
-}
-
-static int tok_init_card(struct net_device *dev)
-{
- struct tok_info *ti;
- short PIOaddr;
- unsigned long i;
- PIOaddr = dev->base_addr;
- ti=(struct tok_info *) dev->priv;
-
- /* Special processing for first interrupt after reset */
- ti->do_tok_int=FIRST_INT;
-
- /* Reset adapter */
- dev->tbusy=1; /* nothing can be done before reset and open completed */
-
-#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_RESET + ISRP_EVEN);
-
-#if !TR_NEWFORMAT
- DPRINTK("resetting card\n");
-#endif
-
- outb(0, PIOaddr+ADAPTRESET);
- for (i=jiffies+TR_RESET_INTERVAL; time_before_eq(jiffies, i);); /* wait 50ms */
- outb(0,PIOaddr+ADAPTRESETREL);
-
-#if !TR_NEWFORMAT
- DPRINTK("card reset\n");
-#endif
-
- ti->open_status=IN_PROGRESS;
- writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
- return 0;
-}
-
-static void open_sap(unsigned char type,struct net_device *dev)
-{
- int i;
- struct tok_info *ti=(struct tok_info *) dev->priv;
-
- SET_PAGE(ti->srb);
- for (i=0; i<sizeof(struct dlc_open_sap); i++)
- writeb(0, ti->srb+i);
-
- writeb(DLC_OPEN_SAP, ti->srb + offsetof(struct dlc_open_sap, command));
- writew(htons(MAX_I_FIELD),
- ti->srb + offsetof(struct dlc_open_sap, max_i_field));
- writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY,
- ti->srb + offsetof(struct dlc_open_sap, sap_options));
- writeb(SAP_OPEN_STATION_CNT,
- ti->srb + offsetof(struct dlc_open_sap, station_count));
- writeb(type, ti->srb + offsetof(struct dlc_open_sap, sap_value));
-
- writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-
-}
-
-void tok_open_adapter(unsigned long dev_addr)
-{
-
- struct net_device *dev=(struct net_device *)dev_addr;
- struct tok_info *ti;
- int i;
-
- ti=(struct tok_info *) dev->priv;
-
-#if !TR_NEWFORMAT
- DPRINTK("now opening the board...\n");
-#endif
-
- writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
- writeb(~CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_RESET + ISRA_ODD);
-
- for (i=0; i<sizeof(struct dir_open_adapter); i++)
- writeb(0, ti->init_srb+i);
-
- writeb(DIR_OPEN_ADAPTER,
- ti->init_srb + offsetof(struct dir_open_adapter, command));
- writew(htons(OPEN_PASS_BCON_MAC),
- ti->init_srb + offsetof(struct dir_open_adapter, open_options));
- if (ti->ring_speed == 16) {
- writew(htons(ti->dhb_size16mb),
- ti->init_srb + offsetof(struct dir_open_adapter, dhb_length));
- writew(htons(ti->rbuf_cnt16),
- ti->init_srb + offsetof(struct dir_open_adapter, num_rcv_buf));
- writew(htons(ti->rbuf_len16),
- ti->init_srb + offsetof(struct dir_open_adapter, rcv_buf_len));
- } else {
- writew(htons(ti->dhb_size4mb),
- ti->init_srb + offsetof(struct dir_open_adapter, dhb_length));
- writew(htons(ti->rbuf_cnt4),
- ti->init_srb + offsetof(struct dir_open_adapter, num_rcv_buf));
- writew(htons(ti->rbuf_len4),
- ti->init_srb + offsetof(struct dir_open_adapter, rcv_buf_len));
- }
- writeb(NUM_DHB, /* always 2 */
- ti->init_srb + offsetof(struct dir_open_adapter, num_dhb));
- writeb(DLC_MAX_SAP,
- ti->init_srb + offsetof(struct dir_open_adapter, dlc_max_sap));
- writeb(DLC_MAX_STA,
- ti->init_srb + offsetof(struct dir_open_adapter, dlc_max_sta));
-
- ti->srb=ti->init_srb; /* We use this one in the interrupt handler */
-
- 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 tr_tx(struct net_device *dev)
-{
- struct tok_info *ti=(struct tok_info *) dev->priv;
- struct trh_hdr *trhdr=(struct trh_hdr *)ti->current_skb->data;
- unsigned int hdr_len;
- __u32 dhb;
- unsigned char xmit_command;
- int i;
- struct trllc *llc;
-
- if (readb(ti->asb + offsetof(struct asb_xmit_resp, ret_code))!=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.*/
- dhb=ti->sram
- +ntohs(readw(ti->arb + offsetof(struct arb_xmit_req, dhb_address)));
-
- /* 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);
-
- xmit_command = readb(ti->srb + offsetof(struct srb_xmit, command));
-
- writeb(xmit_command, ti->asb + offsetof(struct asb_xmit_resp, command));
- writew(readb(ti->srb + offsetof(struct srb_xmit, station_id)),
- ti->asb + offsetof(struct asb_xmit_resp, station_id));
- writeb(llc->ssap, ti->asb + offsetof(struct asb_xmit_resp, rsap_value));
- writeb(readb(ti->srb + offsetof(struct srb_xmit, cmd_corr)),
- ti->asb + offsetof(struct asb_xmit_resp, cmd_corr));
- writeb(0, ti->asb + offsetof(struct asb_xmit_resp, ret_code));
-
- if ((xmit_command==XMIT_XID_CMD) || (xmit_command==XMIT_TEST_CMD)) {
-
- writew(htons(0x11),
- ti->asb + offsetof(struct asb_xmit_resp, frame_length));
- writeb(0x0e, ti->asb + offsetof(struct asb_xmit_resp, hdr_length));
- writeb(AC, dhb);
- writeb(LLC_FRAME, dhb+1);
-
- for (i=0; i<TR_ALEN; i++) writeb((int)0x0FF, dhb+i+2);
- for (i=0; i<TR_ALEN; i++) writeb(0, dhb+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 + offsetof(struct asb_xmit_resp, hdr_length));
- writew(htons(ti->current_skb->len),
- ti->asb + offsetof(struct asb_xmit_resp, frame_length));
-
- memcpy_toio(dhb, ti->current_skb->data, ti->current_skb->len);
-
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- ti->tr_stats.tx_bytes+=ti->current_skb->len;
- dev->tbusy=0;
- dev_kfree_skb(ti->current_skb);
- ti->current_skb=NULL;
- mark_bh(NET_BH);
- if (ti->readlog_pending) ibmtr_readlog(dev);
-}
-
-static void tr_rx(struct net_device *dev)
-{
- struct tok_info *ti=(struct tok_info *) dev->priv;
- __u32 rbuffer, rbufdata;
- __u32 llc;
- unsigned char *data;
- unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
- struct sk_buff *skb;
- unsigned int skb_size = 0;
- int IPv4_p = 0;
- unsigned int chksum = 0;
- struct iphdr *iph;
-
- rbuffer=(ti->sram
- +ntohs(readw(ti->arb + offsetof(struct arb_rec_req, rec_buf_addr))))+2;
-
- if(readb(ti->asb + offsetof(struct asb_rec, ret_code))!=0xFF)
- DPRINTK("ASB not free !!!\n");
-
- writeb(REC_DATA,
- ti->asb + offsetof(struct asb_rec, command));
- writew(readw(ti->arb + offsetof(struct arb_rec_req, station_id)),
- ti->asb + offsetof(struct asb_rec, station_id));
- writew(readw(ti->arb + offsetof(struct arb_rec_req, rec_buf_addr)),
- ti->asb + offsetof(struct asb_rec, rec_buf_addr));
-
- lan_hdr_len=readb(ti->arb + offsetof(struct arb_rec_req, lan_hdr_len));
- hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
-
- llc=(rbuffer + offsetof(struct rec_buf, data) + lan_hdr_len);
-
-#if TR_VERBOSE
- DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
- (unsigned int)offsetof(struct rec_buf,data), (unsigned int)lan_hdr_len);
- DPRINTK("llc: %08X rec_buf_addr: %04X ti->sram: %p\n", llc,
- ntohs(readw(ti->arb + offsetof(struct arb_rec_req, rec_buf_addr))),
- ti->sram);
- DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, "
- "ethertype: %04X\n",
- (int)readb(llc + offsetof(struct trllc, dsap)),
- (int)readb(llc + offsetof(struct trllc, ssap)),
- (int)readb(llc + offsetof(struct trllc, llc)),
- (int)readb(llc + offsetof(struct trllc, protid)),
- (int)readb(llc + offsetof(struct trllc, protid)+1),
- (int)readb(llc + offsetof(struct trllc, protid)+2),
- (int)readw(llc + offsetof(struct trllc, ethertype)));
-#endif
- if (readb(llc + offsetof(struct trllc, llc))!=UI_CMD) {
- writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
- ti->tr_stats.rx_dropped++;
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- return;
- }
-
- length = ntohs(readw(ti->arb+offsetof(struct arb_rec_req, frame_len)));
- if ((readb(llc + offsetof(struct trllc, dsap))==EXTENDED_SAP) &&
- (readb(llc + offsetof(struct trllc, ssap))==EXTENDED_SAP) &&
- (length>=hdr_len)) {
- IPv4_p = 1;
- }
-
-#if TR_VERBOSE
- if (!IPv4_p){
-
- __u32 trhhdr;
-
- trhhdr=(rbuffer+offsetof(struct rec_buf,data));
-
- DPRINTK("Probably non-IP frame received.\n");
- DPRINTK("ssap: %02X dsap: %02X saddr: %02X:%02X:%02X:%02X:%02X:%02X "
- "daddr: %02X:%02X:%02X:%02X:%02X:%02X\n",
- (int)readb(llc + offsetof(struct trllc, ssap)),
- (int)readb(llc + offsetof(struct trllc, dsap)),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)+1),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)+2),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)+3),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)+4),
- (int)readb(trhhdr + offsetof(struct trh_hdr, saddr)+5),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)+1),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)+2),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)+3),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)+4),
- (int)readb(trhhdr + offsetof(struct trh_hdr, daddr)+5));
- }
-#endif
-
- 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");
- ti->tr_stats.rx_dropped++;
- writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
- return;
- }
-
- skb_put(skb, length);
- skb_reserve(skb, sizeof(struct trh_hdr)-lan_hdr_len+sizeof(struct trllc));
- skb->dev=dev;
- data=skb->data;
- rbuffer_len=ntohs(readw(rbuffer + offsetof(struct rec_buf, buf_len)));
- rbufdata = rbuffer + 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... */
- for (;;) {
- if (IPv4_p)
- chksum = csum_partial_copy(bus_to_virt(rbufdata), data,
- length < rbuffer_len ? length : rbuffer_len,
- chksum);
- else
- memcpy_fromio(data, rbufdata, rbuffer_len);
- rbuffer = ntohs(readw(rbuffer));
- if (!rbuffer)
- break;
- length -= rbuffer_len;
- data += rbuffer_len;
- rbuffer += ti->sram;
- rbuffer_len = ntohs(readw(rbuffer + offsetof(struct rec_buf, buf_len)));
- rbufdata = rbuffer + offsetof(struct rec_buf, data);
- }
-
- writeb(0, ti->asb + offsetof(struct asb_rec, ret_code));
-
- writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
-
- ti->tr_stats.rx_bytes += skb->len;
- ti->tr_stats.rx_packets++;
-
- skb->protocol = tr_type_trans(skb,dev);
-
- if (IPv4_p){
- skb->csum = chksum;
- skb->ip_summed = 1;
- }
-
- netif_rx(skb);
-}
-
-static int tok_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
- struct tok_info *ti;
- ti=(struct tok_info *) dev->priv;
-
- if (dev->tbusy) {
- int ticks_waited;
-
- ticks_waited=jiffies - dev->trans_start;
- if (ticks_waited<TR_BUSY_INTERVAL) return 1;
-
- DPRINTK("Arrg. Transmitter busy.\n");
- dev->trans_start+=5; /* we fake the transmission start time... */
- return 1;
- }
-
- if (test_and_set_bit(0,(void *)&dev->tbusy)!=0)
- DPRINTK("Transmitter access conflict\n");
- else {
- int flags;
-
- /* 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;
- writeb(XMIT_UI_FRAME, ti->srb + offsetof(struct srb_xmit, command));
- writew(ti->exsap_station_id, ti->srb
- +offsetof(struct srb_xmit, station_id));
- writeb(CMD_IN_SRB, (ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD));
- spin_unlock_irqrestore(&(ti->lock), flags);
-
- dev->trans_start=jiffies;
- }
-
- return 0;
-}
-
-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_open_adapter;
- init_timer(tmr);
- add_timer(tmr);
-}
-
-void ibmtr_readlog(struct net_device *dev) {
- struct tok_info *ti;
- ti=(struct tok_info *) dev->priv;
-
- ti->readlog_pending = 0;
- 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);
- dev->tbusy=1; /* really srb busy... */
-}
-
-/* tok_get_stats(): Basically a scaffold routine which will return
- the address of the tr_statistics structure associated with
- this device -- the tr.... structure is an ethnet look-alike
- so at least for this iteration may suffice. */
-
-static struct net_device_stats * tok_get_stats(struct net_device *dev) {
-
- struct tok_info *toki;
- toki=(struct tok_info *) dev->priv;
- return (struct net_device_stats *) &toki->tr_stats;
-}
-
-int ibmtr_change_mtu(struct net_device *dev, int mtu) {
- struct tok_info *ti = (struct tok_info *) dev->priv;
-
- 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] = {0,0};
-static int mem[IBMTR_MAX_ADAPTERS] = {0,0};
-
-MODULE_PARM(io, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
-MODULE_PARM(irq, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
-MODULE_PARM(mem, "1-" __MODULE_STRING(IBMTR_MAX_ADAPTERS) "i");
-
-int init_module(void)
-{
- int i;
- for (i = 0; io[i] && (i<IBMTR_MAX_ADAPTERS); i++) {
- irq[i] = 0;
- mem[i] = 0;
- dev_ibmtr[i] = NULL;
- dev_ibmtr[i] = init_trdev(dev_ibmtr[i], 0);
- if (dev_ibmtr[i] == NULL)
- return -ENOMEM;
-
- dev_ibmtr[i]->base_addr = io[i];
- dev_ibmtr[i]->irq = irq[i];
- dev_ibmtr[i]->mem_start = mem[i];
- dev_ibmtr[i]->init = &ibmtr_probe;
-
- if (register_trdev(dev_ibmtr[i]) != 0) {
- kfree_s(dev_ibmtr[i], sizeof(struct net_device));
- dev_ibmtr[i] = NULL;
- if (i == 0) {
- printk("ibmtr: register_trdev() returned non-zero.\n");
- return -EIO;
- } else {
- return 0;
- }
- }
- }
- return 0;
-}
-
-void cleanup_module(void)
-{
- int i;
-
- for (i = 0; i < IBMTR_MAX_ADAPTERS; i++)
- if (dev_ibmtr[i]) {
- unregister_trdev(dev_ibmtr[i]);
- free_irq(dev_ibmtr[i]->irq, dev_ibmtr[i]);
- release_region(dev_ibmtr[i]->base_addr, IBMTR_IO_EXTENT);
- kfree_s(dev_ibmtr[i]->priv, sizeof(struct tok_info));
- kfree_s(dev_ibmtr[i], sizeof(struct net_device));
- dev_ibmtr[i] = NULL;
- }
-}
-#endif /* MODULE */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)