]> bbs.cooldavid.org Git - net-next-2.6.git/blame - drivers/net/tokenring/ibmtr.c
git://bbs.cooldavid.org / net-next-2.6.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
net: trans_start cleanups
[net-next-2.6.git] / drivers / net / tokenring / ibmtr.c
CommitLineData
1da177e4
LT		 1/* ibmtr.c: A shared-memory IBM Token Ring 16/4 driver for linux
2 *
3 * Written 1993 by Mark Swanson and Peter De Schrijver.
4 * This software may be used and distributed according to the terms
5 * of the GNU General Public License, incorporated herein by reference.
6 *
7 * This device driver should work with Any IBM Token Ring Card that does
8 * not use DMA.
9 *
10 * I used Donald Becker's (becker@scyld.com) device driver work
11 * as a base for most of my initial work.
12 *
13 * Changes by Peter De Schrijver
14 * (Peter.Deschrijver@linux.cc.kuleuven.ac.be) :
15 *
16 * + changed name to ibmtr.c in anticipation of other tr boards.
17 * + changed reset code and adapter open code.
18 * + added SAP open code.
19 * + a first attempt to write interrupt, transmit and receive routines.
20 *
21 * Changes by David W. Morris (dwm@shell.portal.com) :
22 * 941003 dwm: - Restructure tok_probe for multiple adapters, devices.
23 * + Add comments, misc reorg for clarity.
24 * + Flatten interrupt handler levels.
25 *
26 * Changes by Farzad Farid (farzy@zen.via.ecp.fr)
27 * and Pascal Andre (andre@chimay.via.ecp.fr) (March 9 1995) :
28 * + multi ring support clean up.
29 * + RFC1042 compliance enhanced.
30 *
31 * Changes by Pascal Andre (andre@chimay.via.ecp.fr) (September 7 1995) :
32 * + bug correction in tr_tx
33 * + removed redundant information display
34 * + some code reworking
35 *
36 * Changes by Michel Lespinasse (walken@via.ecp.fr),
37 * Yann Doussot (doussot@via.ecp.fr) and Pascal Andre (andre@via.ecp.fr)
38 * (February 18, 1996) :
39 * + modified shared memory and mmio access port the driver to
40 * alpha platform (structure access -> readb/writeb)
41 *
42 * Changes by Steve Kipisz (bungy@ibm.net or kipisz@vnet.ibm.com)
43 * (January 18 1996):
44 * + swapped WWOR and WWCR in ibmtr.h
45 * + moved some init code from tok_probe into trdev_init. The
46 * PCMCIA code can call trdev_init to complete initializing
47 * the driver.
48 * + added -DPCMCIA to support PCMCIA
49 * + detecting PCMCIA Card Removal in interrupt handler. If
50 * ISRP is FF, then a PCMCIA card has been removed
51 * 10/2000 Burt needed a new method to avoid crashing the OS
52 *
53 * Changes by Paul Norton (pnorton@cts.com) :
54 * + restructured the READ.LOG logic to prevent the transmit SRB
55 * from being rudely overwritten before the transmit cycle is
56 * complete. (August 15 1996)
57 * + completed multiple adapter support. (November 20 1996)
58 * + implemented csum_partial_copy in tr_rx and increased receive
59 * buffer size and count. Minor fixes. (March 15, 1997)
60 *
61 * Changes by Christopher Turcksin <wabbit@rtfc.demon.co.uk>
62 * + Now compiles ok as a module again.
63 *
64 * Changes by Paul Norton (pnorton@ieee.org) :
65 * + moved the header manipulation code in tr_tx and tr_rx to
66 * net/802/tr.c. (July 12 1997)
67 * + add retry and timeout on open if cable disconnected. (May 5 1998)
68 * + lifted 2000 byte mtu limit. now depends on shared-RAM size.
69 * May 25 1998)
70 * + can't allocate 2k recv buff at 8k shared-RAM. (20 October 1998)
71 *
72 * Changes by Joel Sloan (jjs@c-me.com) :
73 * + disable verbose debug messages by default - to enable verbose
74 * debugging, edit the IBMTR_DEBUG_MESSAGES define below
75 *
76 * Changes by Mike Phillips <phillim@amtrak.com> :
77 * + Added extra #ifdef's to work with new PCMCIA Token Ring Code.
78 * The PCMCIA code now just sets up the card so it can be recognized
79 * by ibmtr_probe. Also checks allocated memory vs. on-board memory
80 * for correct figure to use.
81 *
82 * Changes by Tim Hockin (thockin@isunix.it.ilstu.edu) :
83 * + added spinlocks for SMP sanity (10 March 1999)
84 *
85 * Changes by Jochen Friedrich to enable RFC1469 Option 2 multicasting
86 * i.e. using functional address C0 00 00 04 00 00 to transmit and
87 * receive multicast packets.
88 *
89 * Changes by Mike Sullivan (based on original sram patch by Dave Grothe
90 * to support windowing into on adapter shared ram.
91 * i.e. Use LANAID to setup a PnP configuration with 16K RAM. Paging
92 * will shift this 16K window over the entire available shared RAM.
93 *
94 * Changes by Peter De Schrijver (p2@mind.be) :
95 * + fixed a problem with PCMCIA card removal
96 *
97 * Change by Mike Sullivan et al.:
98 * + added turbo card support. No need to use lanaid to configure
06fe9fb4 99 * the adapter into isa compatibility mode.
1da177e4
LT		 100 *
101 * Changes by Burt Silverman to allow the computer to behave nicely when
102 * a cable is pulled or not in place, or a PCMCIA card is removed hot.
103 */
104
105/* change the define of IBMTR_DEBUG_MESSAGES to a nonzero value
106in the event that chatty debug messages are desired - jjs 12/30/98 */
107
108#define IBMTR_DEBUG_MESSAGES 0
109
110#include <linux/module.h>
d43c36dc 111#include <linux/sched.h>
1da177e4
LT		 112
113#ifdef PCMCIA /* required for ibmtr_cs.c to build */
114#undef MODULE /* yes, really */
115#undef ENABLE_PAGING
116#else
117#define ENABLE_PAGING 1
118#endif
119
1da177e4
LT		 120/* changes the output format of driver initialization */
121#define TR_VERBOSE 0
122
123/* some 95 OS send many non UI frame; this allow removing the warning */
124#define TR_FILTERNONUI 1
125
126#include <linux/ioport.h>
127#include <linux/netdevice.h>
128#include <linux/ip.h>
129#include <linux/trdevice.h>
130#include <linux/ibmtr.h>
131
132#include <net/checksum.h>
133
134#include <asm/io.h>
135
136#define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args)
137#define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args)
138
139/* version and credits */
140#ifndef PCMCIA
6d2cdb4f 141static char version[] __devinitdata =
1da177e4
LT		 142 "\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n"
143 " v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n"
144 " v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n"
145 " v2.2.1 02/08/00 Mike Sullivan <sullivam@us.ibm.com>\n"
146 " v2.2.2 07/27/00 Burt Silverman <burts@us.ibm.com>\n"
147 " v2.4.0 03/01/01 Mike Sullivan <sullivan@us.ibm.com>\n";
148#endif
149
150/* this allows displaying full adapter information */
151
de70b4c8 152static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
1da177e4
LT		 153
154static char pcchannelid[] __devinitdata = {
155 0x05, 0x00, 0x04, 0x09,
156 0x04, 0x03, 0x04, 0x0f,
157 0x03, 0x06, 0x03, 0x01,
158 0x03, 0x01, 0x03, 0x00,
159 0x03, 0x09, 0x03, 0x09,
160 0x03, 0x00, 0x02, 0x00
161};
162
163static char mcchannelid[] __devinitdata = {
164 0x04, 0x0d, 0x04, 0x01,
165 0x05, 0x02, 0x05, 0x03,
166 0x03, 0x06, 0x03, 0x03,
167 0x05, 0x08, 0x03, 0x04,
168 0x03, 0x05, 0x03, 0x01,
169 0x03, 0x08, 0x02, 0x00
170};
171
de70b4c8 172static char __devinit *adapter_def(char type)
1da177e4
LT		 173{
174 switch (type) {
175 case 0xF: return "PC Adapter | PC Adapter II | Adapter/A";
176 case 0xE: return "16/4 Adapter | 16/4 Adapter/A (long)";
177 case 0xD: return "16/4 Adapter/A (short) | 16/4 ISA-16 Adapter";
178 case 0xC: return "Auto 16/4 Adapter";
179 default: return "adapter (unknown type)";
180 };
181};
182
183#define TRC_INIT 0x01 /* Trace initialization & PROBEs */
184#define TRC_INITV 0x02 /* verbose init trace points */
de70b4c8 185static unsigned char ibmtr_debug_trace = 0;
1da177e4 186
1da177e4
LT		 187static int ibmtr_probe1(struct net_device *dev, int ioaddr);
188static unsigned char get_sram_size(struct tok_info *adapt_info);
189static int trdev_init(struct net_device *dev);
190static int tok_open(struct net_device *dev);
191static int tok_init_card(struct net_device *dev);
de70b4c8 192static void tok_open_adapter(unsigned long dev_addr);
1da177e4
LT		 193static void open_sap(unsigned char type, struct net_device *dev);
194static void tok_set_multicast_list(struct net_device *dev);
61a84108
SH		 195static netdev_tx_t tok_send_packet(struct sk_buff *skb,
196 struct net_device *dev);
1da177e4 197static int tok_close(struct net_device *dev);
7d12e780 198static irqreturn_t tok_interrupt(int irq, void *dev_id);
1da177e4
LT		 199static void initial_tok_int(struct net_device *dev);
200static void tr_tx(struct net_device *dev);
201static void tr_rx(struct net_device *dev);
de70b4c8 202static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
1da177e4 203static void tok_rerun(unsigned long dev_addr);
de70b4c8 204static void ibmtr_readlog(struct net_device *dev);
de70b4c8 205static int ibmtr_change_mtu(struct net_device *dev, int mtu);
1da177e4
LT		 206static void find_turbo_adapters(int *iolist);
207
208static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = {
209 0xa20, 0xa24, 0, 0, 0
210};
211static int __devinitdata turbo_io[IBMTR_MAX_ADAPTERS] = {0};
212static int __devinitdata turbo_irq[IBMTR_MAX_ADAPTERS] = {0};
213static int __devinitdata turbo_searched = 0;
214
215#ifndef PCMCIA
6d2cdb4f 216static __u32 ibmtr_mem_base __devinitdata = 0xd0000;
1da177e4
LT		 217#endif
218
219static void __devinit PrtChanID(char *pcid, short stride)
220{
221 short i, j;
222 for (i = 0, j = 0; i < 24; i++, j += stride)
223 printk("%1x", ((int) pcid[j]) & 0x0f);
224 printk("\n");
225}
226
227static void __devinit HWPrtChanID(void __iomem *pcid, short stride)
228{
229 short i, j;
230 for (i = 0, j = 0; i < 24; i++, j += stride)
231 printk("%1x", ((int) readb(pcid + j)) & 0x0f);
232 printk("\n");
233}
234
235/* We have to ioremap every checked address, because isa_readb is
236 * going away.
237 */
238
239static void __devinit find_turbo_adapters(int *iolist)
240{
241 int ram_addr;
242 int index=0;
243 void __iomem *chanid;
244 int found_turbo=0;
245 unsigned char *tchanid, ctemp;
246 int i, j;
247 unsigned long jif;
248 void __iomem *ram_mapped ;
249
250 if (turbo_searched == 1) return;
251 turbo_searched=1;
252 for (ram_addr=0xC0000; ram_addr < 0xE0000; ram_addr+=0x2000) {
253
254 __u32 intf_tbl=0;
255
256 found_turbo=1;
257 ram_mapped = ioremap((u32)ram_addr,0x1fff) ;
258 if (ram_mapped==NULL)
259 continue ;
260 chanid=(CHANNEL_ID + ram_mapped);
261 tchanid=pcchannelid;
262 ctemp=readb(chanid) & 0x0f;
263 if (ctemp != *tchanid) continue;
264 for (i=2,j=1; i<=46; i=i+2,j++) {
265 if ((readb(chanid+i) & 0x0f) != tchanid[j]){
266 found_turbo=0;
267 break;
268 }
269 }
270 if (!found_turbo) continue;
271
272 writeb(0x90, ram_mapped+0x1E01);
273 for(i=2; i<0x0f; i++) {
274 writeb(0x00, ram_mapped+0x1E01+i);
275 }
276 writeb(0x00, ram_mapped+0x1E01);
277 for(jif=jiffies+TR_BUSY_INTERVAL; time_before_eq(jiffies,jif););
278 intf_tbl=ntohs(readw(ram_mapped+ACA_OFFSET+ACA_RW+WRBR_EVEN));
279 if (intf_tbl) {
280#if IBMTR_DEBUG_MESSAGES
281 printk("ibmtr::find_turbo_adapters, Turbo found at "
282 "ram_addr %x\n",ram_addr);
283 printk("ibmtr::find_turbo_adapters, interface_table ");
284 for(i=0; i<6; i++) {
285 printk("%x:",readb(ram_addr+intf_tbl+i));
286 }
287 printk("\n");
288#endif
289 turbo_io[index]=ntohs(readw(ram_mapped+intf_tbl+4));
290 turbo_irq[index]=readb(ram_mapped+intf_tbl+3);
291 outb(0, turbo_io[index] + ADAPTRESET);
292 for(jif=jiffies+TR_RST_TIME;time_before_eq(jiffies,jif););
293 outb(0, turbo_io[index] + ADAPTRESETREL);
294 index++;
295 continue;
296 }
297#if IBMTR_DEBUG_MESSAGES
298 printk("ibmtr::find_turbo_adapters, ibmtr card found at"
299 " %x but not a Turbo model\n",ram_addr);
300#endif
301 iounmap(ram_mapped) ;
302 } /* for */
303 for(i=0; i<IBMTR_MAX_ADAPTERS; i++) {
304 if(!turbo_io[i]) break;
305 for (j=0; j<IBMTR_MAX_ADAPTERS; j++) {
306 if ( iolist[j] && iolist[j] != turbo_io[i]) continue;
307 iolist[j]=turbo_io[i];
308 break;
309 }
310 }
311}
312
313static void ibmtr_cleanup_card(struct net_device *dev)
314{
315 if (dev->base_addr) {
316 outb(0,dev->base_addr+ADAPTRESET);
317
3173c890 318 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
1da177e4
LT		 319
320 outb(0,dev->base_addr+ADAPTRESETREL);
321 }
322
323#ifndef PCMCIA
324 free_irq(dev->irq, dev);
325 release_region(dev->base_addr, IBMTR_IO_EXTENT);
326
327 {
eda10531 328 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 329 iounmap(ti->mmio);
330 iounmap(ti->sram_virt);
331 }
332#endif
333}
334
1da177e4
LT		 335/****************************************************************************
336 * ibmtr_probe(): Routine specified in the network device structure
337 * to probe for an IBM Token Ring Adapter. Routine outline:
338 * I. Interrogate hardware to determine if an adapter exists
339 * and what the speeds and feeds are
340 * II. Setup data structures to control execution based upon
341 * adapter characteristics.
342 *
343 * We expect ibmtr_probe to be called once for each device entry
344 * which references it.
345 ****************************************************************************/
346
abf0437b 347static int __devinit ibmtr_probe(struct net_device *dev)
1da177e4
LT		 348{
349 int i;
350 int base_addr = dev->base_addr;
351
352 if (base_addr && base_addr <= 0x1ff) /* Don't probe at all. */
353 return -ENXIO;
354 if (base_addr > 0x1ff) { /* Check a single specified location. */
355 if (!ibmtr_probe1(dev, base_addr)) return 0;
356 return -ENODEV;
357 }
358 find_turbo_adapters(ibmtr_portlist);
359 for (i = 0; ibmtr_portlist[i]; i++) {
360 int ioaddr = ibmtr_portlist[i];
361
362 if (!ibmtr_probe1(dev, ioaddr)) return 0;
363 }
364 return -ENODEV;
365}
366
abf0437b 367int __devinit ibmtr_probe_card(struct net_device *dev)
82c00b62
RB		 368{
369 int err = ibmtr_probe(dev);
370 if (!err) {
371 err = register_netdev(dev);
372 if (err)
373 ibmtr_cleanup_card(dev);
374 }
375 return err;
376}
377
1da177e4
LT		 378/*****************************************************************************/
379
380static int __devinit ibmtr_probe1(struct net_device *dev, int PIOaddr)
381{
382
383 unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0;
384 void __iomem * t_mmio = NULL;
eda10531 385 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 386 void __iomem *cd_chanid;
387 unsigned char *tchanid, ctemp;
388#ifndef PCMCIA
389 unsigned char t_irq=0;
390 unsigned long timeout;
391 static int version_printed;
392#endif
393
394 /* Query the adapter PIO base port which will return
395 * indication of where MMIO was placed. We also have a
396 * coded interrupt number.
397 */
398 segment = inb(PIOaddr);
399 if (segment < 0x40 || segment > 0xe0) {
400 /* Out of range values so we'll assume non-existent IO device
401 * but this is not necessarily a problem, esp if a turbo
402 * adapter is being used. */
403#if IBMTR_DEBUG_MESSAGES
404 DPRINTK("ibmtr_probe1(): unhappy that inb(0x%X) == 0x%X, "
405 "Hardware Problem?\n",PIOaddr,segment);
406#endif
407 return -ENODEV;
408 }
409 /*
410 * Compute the linear base address of the MMIO area
411 * as LINUX doesn't care about segments
412 */
413 t_mmio = ioremap(((__u32) (segment & 0xfc) << 11) + 0x80000,2048);
414 if (!t_mmio) {
415 DPRINTK("Cannot remap mmiobase memory area") ;
416 return -ENODEV ;
417 }
418 intr = segment & 0x03; /* low bits is coded interrupt # */
419 if (ibmtr_debug_trace & TRC_INIT)
420 DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %p intr: %d\n"
421 , PIOaddr, (int) segment, t_mmio, (int) intr);
422
423 /*
424 * Now we will compare expected 'channelid' strings with
425 * what we is there to learn of ISA/MCA or not TR card
426 */
427#ifdef PCMCIA
428 iounmap(t_mmio);
429 t_mmio = ti->mmio; /*BMS to get virtual address */
430 irq = ti->irq; /*BMS to display the irq! */
431#endif
432 cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */
433 tchanid = pcchannelid;
434 cardpresent = TR_ISA; /* try ISA */
435
436 /* Suboptimize knowing first byte different */
437 ctemp = readb(cd_chanid) & 0x0f;
438 if (ctemp != *tchanid) { /* NOT ISA card, try MCA */
439 tchanid = mcchannelid;
440 cardpresent = TR_MCA;
441 if (ctemp != *tchanid) /* Neither ISA nor MCA */
442 cardpresent = NOTOK;
443 }
444 if (cardpresent != NOTOK) {
445 /* Know presumed type, try rest of ID */
446 for (i = 2, j = 1; i <= 46; i = i + 2, j++) {
447 if( (readb(cd_chanid+i)&0x0f) == tchanid[j]) continue;
448 /* match failed, not TR card */
449 cardpresent = NOTOK;
450 break;
451 }
452 }
453 /*
454 * If we have an ISA board check for the ISA P&P version,
455 * as it has different IRQ settings
456 */
457 if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e))
458 cardpresent = TR_ISAPNP;
459 if (cardpresent == NOTOK) { /* "channel_id" did not match, report */
460 if (!(ibmtr_debug_trace & TRC_INIT)) {
461#ifndef PCMCIA
462 iounmap(t_mmio);
463#endif
464 return -ENODEV;
465 }
466 DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n",
467 PIOaddr);
468 DPRINTK("Expected for ISA: ");
469 PrtChanID(pcchannelid, 1);
470 DPRINTK(" found: ");
471/* BMS Note that this can be misleading, when hardware is flaky, because you
472 are reading it a second time here. So with my flaky hardware, I'll see my-
473 self in this block, with the HW ID matching the ISA ID exactly! */
474 HWPrtChanID(cd_chanid, 2);
475 DPRINTK("Expected for MCA: ");
476 PrtChanID(mcchannelid, 1);
477 }
478 /* Now, setup some of the pl0 buffers for this driver.. */
479 /* If called from PCMCIA, it is already set up, so no need to
480 waste the memory, just use the existing structure */
481#ifndef PCMCIA
482 ti->mmio = t_mmio;
483 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++) {
484 if (turbo_io[i] != PIOaddr)
485 continue;
486#if IBMTR_DEBUG_MESSAGES
487 printk("ibmtr::tr_probe1, setting PIOaddr %x to Turbo\n",
488 PIOaddr);
489#endif
490 ti->turbo = 1;
491 t_irq = turbo_irq[i];
492 }
493#endif /* !PCMCIA */
494 ti->readlog_pending = 0;
495 init_waitqueue_head(&ti->wait_for_reset);
496
497 /* if PCMCIA, the card can be recognized as either TR_ISA or TR_ISAPNP
498 * depending which card is inserted. */
499
500#ifndef PCMCIA
501 switch (cardpresent) {
502 case TR_ISA:
503 if (intr == 0) irq = 9; /* irq2 really is irq9 */
504 if (intr == 1) irq = 3;
505 if (intr == 2) irq = 6;
506 if (intr == 3) irq = 7;
507 ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
508 break;
509 case TR_MCA:
510 if (intr == 0) irq = 9;
511 if (intr == 1) irq = 3;
512 if (intr == 2) irq = 10;
513 if (intr == 3) irq = 11;
514 ti->global_int_enable = 0;
515 ti->adapter_int_enable = 0;
516 ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
517 break;
518 case TR_ISAPNP:
519 if (!t_irq) {
520 if (intr == 0) irq = 9;
521 if (intr == 1) irq = 3;
522 if (intr == 2) irq = 10;
523 if (intr == 3) irq = 11;
524 } else
525 irq=t_irq;
526 timeout = jiffies + TR_SPIN_INTERVAL;
527 while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){
528 if (!time_after(jiffies, timeout)) continue;
529 DPRINTK( "Hardware timeout during initialization.\n");
530 iounmap(t_mmio);
1da177e4
LT		 531 return -ENODEV;
532 }
533 ti->sram_phys =
534 ((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12);
535 ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
536 break;
537 } /*end switch (cardpresent) */
538#endif /*not PCMCIA */
539
540 if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
541 DPRINTK("irq=%d", irq);
542 printk(", sram_phys=0x%x", ti->sram_phys);
543 if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */
544 DPRINTK(", ti->mmio=%p", ti->mmio);
545 printk(", segment=%02X", segment);
546 }
547 printk(".\n");
548 }
549
550 /* Get hw address of token ring card */
551 j = 0;
552 for (i = 0; i < 0x18; i = i + 2) {
553 /* technical reference states to do this */
554 temp = readb(ti->mmio + AIP + i) & 0x0f;
555 ti->hw_address[j] = temp;
556 if (j & 1)
557 dev->dev_addr[(j / 2)] =
558 ti->hw_address[j]+ (ti->hw_address[j - 1] << 4);
559 ++j;
560 }
561 /* get Adapter type: 'F' = Adapter/A, 'E' = 16/4 Adapter II,... */
562 ti->adapter_type = readb(ti->mmio + AIPADAPTYPE);
563
564 /* get Data Rate: F=4Mb, E=16Mb, D=4Mb & 16Mb ?? */
565 ti->data_rate = readb(ti->mmio + AIPDATARATE);
566
567 /* Get Early Token Release support?: F=no, E=4Mb, D=16Mb, C=4&16Mb */
568 ti->token_release = readb(ti->mmio + AIPEARLYTOKEN);
569
570 /* How much shared RAM is on adapter ? */
571 if (ti->turbo) {
572 ti->avail_shared_ram=127;
573 } else {
574 ti->avail_shared_ram = get_sram_size(ti);/*in 512 byte units */
575 }
576 /* We need to set or do a bunch of work here based on previous results*/
577 /* Support paging? What sizes?: F=no, E=16k, D=32k, C=16 & 32k */
578 ti->shared_ram_paging = readb(ti->mmio + AIPSHRAMPAGE);
579
580 /* Available DHB 4Mb size: F=2048, E=4096, D=4464 */
581 switch (readb(ti->mmio + AIP4MBDHB)) {
582 case 0xe: ti->dhb_size4mb = 4096; break;
583 case 0xd: ti->dhb_size4mb = 4464; break;
584 default: ti->dhb_size4mb = 2048; break;
585 }
586
587 /* Available DHB 16Mb size: F=2048, E=4096, D=8192, C=16384, B=17960 */
588 switch (readb(ti->mmio + AIP16MBDHB)) {
589 case 0xe: ti->dhb_size16mb = 4096; break;
590 case 0xd: ti->dhb_size16mb = 8192; break;
591 case 0xc: ti->dhb_size16mb = 16384; break;
592 case 0xb: ti->dhb_size16mb = 17960; break;
593 default: ti->dhb_size16mb = 2048; break;
594 }
595
596 /* We must figure out how much shared memory space this adapter
597 * will occupy so that if there are two adapters we can fit both
598 * in. Given a choice, we will limit this adapter to 32K. The
599 * maximum space will will use for two adapters is 64K so if the
600 * adapter we are working on demands 64K (it also doesn't support
601 * paging), then only one adapter can be supported.
602 */
603
604 /*
605 * determine how much of total RAM is mapped into PC space
606 */
607 ti->mapped_ram_size= /*sixteen to onehundredtwentyeight 512byte blocks*/
608 1<< ((readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03) + 4);
609 ti->page_mask = 0;
610 if (ti->turbo) ti->page_mask=0xf0;
611 else if (ti->shared_ram_paging == 0xf); /* No paging in adapter */
612 else {
613#ifdef ENABLE_PAGING
614 unsigned char pg_size = 0;
615 /* BMS: page size: PCMCIA, use configuration register;
616 ISAPNP, use LANAIDC config tool from www.ibm.com */
617 switch (ti->shared_ram_paging) {
618 case 0xf:
619 break;
620 case 0xe:
621 ti->page_mask = (ti->mapped_ram_size == 32) ? 0xc0 : 0;
622 pg_size = 32; /* 16KB page size */
623 break;
624 case 0xd:
625 ti->page_mask = (ti->mapped_ram_size == 64) ? 0x80 : 0;
626 pg_size = 64; /* 32KB page size */
627 break;
628 case 0xc:
629 switch (ti->mapped_ram_size) {
630 case 32:
631 ti->page_mask = 0xc0;
632 pg_size = 32;
633 break;
634 case 64:
635 ti->page_mask = 0x80;
636 pg_size = 64;
637 break;
638 }
639 break;
640 default:
641 DPRINTK("Unknown shared ram paging info %01X\n",
642 ti->shared_ram_paging);
643 iounmap(t_mmio);
1da177e4
LT		 644 return -ENODEV;
645 break;
646 } /*end switch shared_ram_paging */
647
648 if (ibmtr_debug_trace & TRC_INIT)
649 DPRINTK("Shared RAM paging code: %02X, "
650 "mapped RAM size: %dK, shared RAM size: %dK, "
651 "page mask: %02X\n:",
652 ti->shared_ram_paging, ti->mapped_ram_size / 2,
653 ti->avail_shared_ram / 2, ti->page_mask);
654#endif /*ENABLE_PAGING */
655 }
656
657#ifndef PCMCIA
658 /* finish figuring the shared RAM address */
659 if (cardpresent == TR_ISA) {
660 static __u32 ram_bndry_mask[] =
661 { 0xffffe000, 0xffffc000, 0xffff8000, 0xffff0000 };
662 __u32 new_base, rrr_32, chk_base, rbm;
663
664 rrr_32=readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03;
665 rbm = ram_bndry_mask[rrr_32];
666 new_base = (ibmtr_mem_base + (~rbm)) & rbm;/* up to boundary */
667 chk_base = new_base + (ti->mapped_ram_size << 9);
668 if (chk_base > (ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE)) {
669 DPRINTK("Shared RAM for this adapter (%05x) exceeds "
670 "driver limit (%05x), adapter not started.\n",
671 chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
672 iounmap(t_mmio);
1da177e4
LT		 673 return -ENODEV;
674 } else { /* seems cool, record what we have figured out */
675 ti->sram_base = new_base >> 12;
676 ibmtr_mem_base = chk_base;
677 }
678 }
679 else ti->sram_base = ti->sram_phys >> 12;
680
681 /* The PCMCIA has already got the interrupt line and the io port,
682 so no chance of anybody else getting it - MLP */
a0607fd3 683 if (request_irq(dev->irq = irq, tok_interrupt, 0, "ibmtr", dev) != 0) {
1da177e4
LT		 684 DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
685 irq);
686 iounmap(t_mmio);
1da177e4
LT		 687 return -ENODEV;
688 }
689 /*?? Now, allocate some of the PIO PORTs for this driver.. */
690 /* record PIOaddr range as busy */
691 if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) {
692 DPRINTK("Could not grab PIO range. Halting driver.\n");
693 free_irq(dev->irq, dev);
694 iounmap(t_mmio);
1da177e4
LT		 695 return -EBUSY;
696 }
697
698 if (!version_printed++) {
699 printk(version);
700 }
701#endif /* !PCMCIA */
702 DPRINTK("%s %s found\n",
703 channel_def[cardpresent - 1], adapter_def(ti->adapter_type));
704 DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n",
705 irq, PIOaddr, ti->mapped_ram_size / 2);
e174961c 706 DPRINTK("Hardware address : %pM\n", dev->dev_addr);
1da177e4
LT		 707 if (ti->page_mask)
708 DPRINTK("Shared RAM paging enabled. "
709 "Page size: %uK Shared Ram size %dK\n",
710 ((ti->page_mask^0xff)+1) >>2, ti->avail_shared_ram / 2);
711 else
712 DPRINTK("Shared RAM paging disabled. ti->page_mask %x\n",
713 ti->page_mask);
714
715 /* Calculate the maximum DHB we can use */
716 /* two cases where avail_shared_ram doesn't equal mapped_ram_size:
717 1. avail_shared_ram is 127 but mapped_ram_size is 128 (typical)
718 2. user has configured adapter for less than avail_shared_ram
719 but is not using paging (she should use paging, I believe)
720 */
721 if (!ti->page_mask) {
722 ti->avail_shared_ram=
723 min(ti->mapped_ram_size,ti->avail_shared_ram);
724 }
725
726 switch (ti->avail_shared_ram) {
727 case 16: /* 8KB shared RAM */
728 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)2048);
729 ti->rbuf_len4 = 1032;
730 ti->rbuf_cnt4=2;
731 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)2048);
732 ti->rbuf_len16 = 1032;
733 ti->rbuf_cnt16=2;
734 break;
735 case 32: /* 16KB shared RAM */
736 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
737 ti->rbuf_len4 = 1032;
738 ti->rbuf_cnt4=4;
739 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)4096);
740 ti->rbuf_len16 = 1032; /*1024 usable */
741 ti->rbuf_cnt16=4;
742 break;
743 case 64: /* 32KB shared RAM */
744 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
745 ti->rbuf_len4 = 1032;
746 ti->rbuf_cnt4=6;
747 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)10240);
748 ti->rbuf_len16 = 1032;
749 ti->rbuf_cnt16=6;
750 break;
751 case 127: /* 63.5KB shared RAM */
752 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
753 ti->rbuf_len4 = 1032;
754 ti->rbuf_cnt4=6;
755 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)16384);
756 ti->rbuf_len16 = 1032;
757 ti->rbuf_cnt16=16;
758 break;
759 case 128: /* 64KB shared RAM */
760 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
761 ti->rbuf_len4 = 1032;
762 ti->rbuf_cnt4=6;
763 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)17960);
764 ti->rbuf_len16 = 1032;
765 ti->rbuf_cnt16=16;
766 break;
767 default:
768 ti->dhb_size4mb = 2048;
769 ti->rbuf_len4 = 1032;
770 ti->rbuf_cnt4=2;
771 ti->dhb_size16mb = 2048;
772 ti->rbuf_len16 = 1032;
773 ti->rbuf_cnt16=2;
774 break;
775 }
776 /* this formula is not smart enough for the paging case
777 ti->rbuf_cnt<x> = (ti->avail_shared_ram * BLOCKSZ - ADAPT_PRIVATE -
778 ARBLENGTH - SSBLENGTH - DLC_MAX_SAP * SAPLENGTH -
779 DLC_MAX_STA * STALENGTH - ti->dhb_size<x>mb * NUM_DHB -
780 SRBLENGTH - ASBLENGTH) / ti->rbuf_len<x>;
781 */
782 ti->maxmtu16 = (ti->rbuf_len16 - 8) * ti->rbuf_cnt16 - TR_HLEN;
783 ti->maxmtu4 = (ti->rbuf_len4 - 8) * ti->rbuf_cnt4 - TR_HLEN;
784 /*BMS assuming 18 bytes of Routing Information (usually works) */
785 DPRINTK("Maximum Receive Internet Protocol MTU 16Mbps: %d, 4Mbps: %d\n",
786 ti->maxmtu16, ti->maxmtu4);
787
788 dev->base_addr = PIOaddr; /* set the value for device */
789 dev->mem_start = ti->sram_base << 12;
790 dev->mem_end = dev->mem_start + (ti->mapped_ram_size << 9) - 1;
791 trdev_init(dev);
792 return 0; /* Return 0 to indicate we have found a Token Ring card. */
793} /*ibmtr_probe1() */
794
795/*****************************************************************************/
796
797/* query the adapter for the size of shared RAM */
798/* the function returns the RAM size in units of 512 bytes */
799
800static unsigned char __devinit get_sram_size(struct tok_info *adapt_info)
801{
802 unsigned char avail_sram_code;
803 static unsigned char size_code[] = { 0, 16, 32, 64, 127, 128 };
804 /* Adapter gives
805 'F' -- use RRR bits 3,2
806 'E' -- 8kb 'D' -- 16kb
807 'C' -- 32kb 'A' -- 64KB
808 'B' - 64KB less 512 bytes at top
809 (WARNING ... must zero top bytes in INIT */
810
811 avail_sram_code = 0xf - readb(adapt_info->mmio + AIPAVAILSHRAM);
812 if (avail_sram_code) return size_code[avail_sram_code];
813 else /* for code 'F', must compute size from RRR(3,2) bits */
814 return 1 <<
815 ((readb(adapt_info->mmio+ACA_OFFSET+ACA_RW+RRR_ODD)>>2&3)+4);
816}
817
818/*****************************************************************************/
819
c86d8740
SH		 820static const struct net_device_ops trdev_netdev_ops = {
821 .ndo_open = tok_open,
822 .ndo_stop = tok_close,
823 .ndo_start_xmit = tok_send_packet,
824 .ndo_set_multicast_list = tok_set_multicast_list,
825 .ndo_change_mtu = ibmtr_change_mtu,
826};
827
1da177e4
LT		 828static int __devinit trdev_init(struct net_device *dev)
829{
eda10531 830 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 831
832 SET_PAGE(ti->srb_page);
833 ti->open_failure = NO ;
c86d8740 834 dev->netdev_ops = &trdev_netdev_ops;
1da177e4
LT		 835
836 return 0;
837}
838
839/*****************************************************************************/
840
841static int tok_init_card(struct net_device *dev)
842{
843 struct tok_info *ti;
844 short PIOaddr;
845 unsigned long i;
846
847 PIOaddr = dev->base_addr;
eda10531 848 ti = netdev_priv(dev);
1da177e4
LT		 849 /* Special processing for first interrupt after reset */
850 ti->do_tok_int = FIRST_INT;
851 /* Reset adapter */
852 writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
853 outb(0, PIOaddr + ADAPTRESET);
854
3173c890 855 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
1da177e4
LT		 856
857 outb(0, PIOaddr + ADAPTRESETREL);
858#ifdef ENABLE_PAGING
859 if (ti->page_mask)
860 writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN);
861#endif
862 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
863 i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ);
864 return i? 0 : -EAGAIN;
865}
866
867/*****************************************************************************/
868static int tok_open(struct net_device *dev)
869{
eda10531 870 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 871 int i;
872
873 /*the case we were left in a failure state during a previous open */
874 if (ti->open_failure == YES) {
875 DPRINTK("Last time you were disconnected, how about now?\n");
876 printk("You can't insert with an ICS connector half-cocked.\n");
877 }
878
879 ti->open_status = CLOSED; /* CLOSED or OPEN */
880 ti->sap_status = CLOSED; /* CLOSED or OPEN */
881 ti->open_failure = NO; /* NO or YES */
882 ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */
1da177e4
LT		 883
884 ti->sram_phys &= ~1; /* to reverse what we do in tok_close */
885 /* init the spinlock */
886 spin_lock_init(&ti->lock);
887 init_timer(&ti->tr_timer);
888
889 i = tok_init_card(dev);
890 if (i) return i;
891
892 while (1){
893 tok_open_adapter((unsigned long) dev);
894 i= interruptible_sleep_on_timeout(&ti->wait_for_reset, 25 * HZ);
895 /* sig catch: estimate opening adapter takes more than .5 sec*/
896 if (i>(245*HZ)/10) break; /* fancier than if (i==25*HZ) */
897 if (i==0) break;
898 if (ti->open_status == OPEN && ti->sap_status==OPEN) {
899 netif_start_queue(dev);
900 DPRINTK("Adapter is up and running\n");
901 return 0;
902 }
3173c890
NA		 903 i=schedule_timeout_interruptible(TR_RETRY_INTERVAL);
904 /* wait 30 seconds */
1da177e4
LT		 905 if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */
906 }
907 outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/
908 DPRINTK("TERMINATED via signal\n"); /*BMS useful */
909 return -EAGAIN;
910}
911
912/*****************************************************************************/
913
914#define COMMAND_OFST 0
915#define OPEN_OPTIONS_OFST 8
916#define NUM_RCV_BUF_OFST 24
917#define RCV_BUF_LEN_OFST 26
918#define DHB_LENGTH_OFST 28
919#define NUM_DHB_OFST 30
920#define DLC_MAX_SAP_OFST 32
921#define DLC_MAX_STA_OFST 33
922
de70b4c8 923static void tok_open_adapter(unsigned long dev_addr)
1da177e4
LT		 924{
925 struct net_device *dev = (struct net_device *) dev_addr;
926 struct tok_info *ti;
927 int i;
928
eda10531 929 ti = netdev_priv(dev);
1da177e4
LT		 930 SET_PAGE(ti->init_srb_page);
931 writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
932 for (i = 0; i < sizeof(struct dir_open_adapter); i++)
933 writeb(0, ti->init_srb + i);
934 writeb(DIR_OPEN_ADAPTER, ti->init_srb + COMMAND_OFST);
935 writew(htons(OPEN_PASS_BCON_MAC), ti->init_srb + OPEN_OPTIONS_OFST);
936 if (ti->ring_speed == 16) {
937 writew(htons(ti->dhb_size16mb), ti->init_srb + DHB_LENGTH_OFST);
938 writew(htons(ti->rbuf_cnt16), ti->init_srb + NUM_RCV_BUF_OFST);
939 writew(htons(ti->rbuf_len16), ti->init_srb + RCV_BUF_LEN_OFST);
940 } else {
941 writew(htons(ti->dhb_size4mb), ti->init_srb + DHB_LENGTH_OFST);
942 writew(htons(ti->rbuf_cnt4), ti->init_srb + NUM_RCV_BUF_OFST);
943 writew(htons(ti->rbuf_len4), ti->init_srb + RCV_BUF_LEN_OFST);
944 }
945 writeb(NUM_DHB, /* always 2 */ ti->init_srb + NUM_DHB_OFST);
946 writeb(DLC_MAX_SAP, ti->init_srb + DLC_MAX_SAP_OFST);
947 writeb(DLC_MAX_STA, ti->init_srb + DLC_MAX_STA_OFST);
948 ti->srb = ti->init_srb; /* We use this one in the interrupt handler */
949 ti->srb_page = ti->init_srb_page;
950 DPRINTK("Opening adapter: Xmit bfrs: %d X %d, Rcv bfrs: %d X %d\n",
951 readb(ti->init_srb + NUM_DHB_OFST),
952 ntohs(readw(ti->init_srb + DHB_LENGTH_OFST)),
953 ntohs(readw(ti->init_srb + NUM_RCV_BUF_OFST)),
954 ntohs(readw(ti->init_srb + RCV_BUF_LEN_OFST)));
955 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
956 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
957}
958
959/*****************************************************************************/
960
961static void open_sap(unsigned char type, struct net_device *dev)
962{
963 int i;
eda10531 964 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 965
966 SET_PAGE(ti->srb_page);
967 for (i = 0; i < sizeof(struct dlc_open_sap); i++)
968 writeb(0, ti->srb + i);
969
970#define MAX_I_FIELD_OFST 14
971#define SAP_VALUE_OFST 16
972#define SAP_OPTIONS_OFST 17
973#define STATION_COUNT_OFST 18
974
975 writeb(DLC_OPEN_SAP, ti->srb + COMMAND_OFST);
976 writew(htons(MAX_I_FIELD), ti->srb + MAX_I_FIELD_OFST);
977 writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY, ti->srb+ SAP_OPTIONS_OFST);
978 writeb(SAP_OPEN_STATION_CNT, ti->srb + STATION_COUNT_OFST);
979 writeb(type, ti->srb + SAP_VALUE_OFST);
980 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
981}
982
983
984/*****************************************************************************/
985
986static void tok_set_multicast_list(struct net_device *dev)
987{
eda10531 988 struct tok_info *ti = netdev_priv(dev);
22bedad3 989 struct netdev_hw_addr *ha;
1da177e4
LT		 990 unsigned char address[4];
991
992 int i;
993
994 /*BMS the next line is CRUCIAL or you may be sad when you */
995 /*BMS ifconfig tr down or hot unplug a PCMCIA card ??hownowbrowncow*/
996 if (/*BMSHELPdev->start == 0 ||*/ ti->open_status != OPEN) return;
997 address[0] = address[1] = address[2] = address[3] = 0;
22bedad3
JP		 998 netdev_for_each_mc_addr(ha, dev) {
999 address[0] |= ha->addr[2];
1000 address[1] |= ha->addr[3];
1001 address[2] |= ha->addr[4];
1002 address[3] |= ha->addr[5];
1da177e4
LT		 1003 }
1004 SET_PAGE(ti->srb_page);
1005 for (i = 0; i < sizeof(struct srb_set_funct_addr); i++)
1006 writeb(0, ti->srb + i);
1007
1008#define FUNCT_ADDRESS_OFST 6
1009
1010 writeb(DIR_SET_FUNC_ADDR, ti->srb + COMMAND_OFST);
1011 for (i = 0; i < 4; i++)
1012 writeb(address[i], ti->srb + FUNCT_ADDRESS_OFST + i);
1013 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1014#if TR_VERBOSE
1015 DPRINTK("Setting functional address: ");
1016 for (i=0;i<4;i++) printk("%02X ", address[i]);
1017 printk("\n");
1018#endif
1019}
1020
1021/*****************************************************************************/
1022
1023#define STATION_ID_OFST 4
1024
61a84108
SH		 1025static netdev_tx_t tok_send_packet(struct sk_buff *skb,
1026 struct net_device *dev)
1da177e4
LT		 1027{
1028 struct tok_info *ti;
1029 unsigned long flags;
eda10531 1030 ti = netdev_priv(dev);
1da177e4
LT		 1031
1032 netif_stop_queue(dev);
1033
1034 /* lock against other CPUs */
1035 spin_lock_irqsave(&(ti->lock), flags);
1036
1037 /* Save skb; we'll need it when the adapter asks for the data */
1038 ti->current_skb = skb;
1039 SET_PAGE(ti->srb_page);
1040 writeb(XMIT_UI_FRAME, ti->srb + COMMAND_OFST);
1041 writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
1042 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1043 spin_unlock_irqrestore(&(ti->lock), flags);
6ed10654 1044 return NETDEV_TX_OK;
1da177e4
LT		 1045}
1046
1047/*****************************************************************************/
1048
1049static int tok_close(struct net_device *dev)
1050{
eda10531 1051 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1052
1053 /* Important for PCMCIA hot unplug, otherwise, we'll pull the card, */
1054 /* unloading the module from memory, and then if a timer pops, ouch */
1055 del_timer_sync(&ti->tr_timer);
1056 outb(0, dev->base_addr + ADAPTRESET);
1057 ti->sram_phys |= 1;
1058 ti->open_status = CLOSED;
1059
1060 netif_stop_queue(dev);
1061 DPRINTK("Adapter is closed.\n");
1062 return 0;
1063}
1064
1065/*****************************************************************************/
1066
1067#define RETCODE_OFST 2
1068#define OPEN_ERROR_CODE_OFST 6
1069#define ASB_ADDRESS_OFST 8
1070#define SRB_ADDRESS_OFST 10
1071#define ARB_ADDRESS_OFST 12
1072#define SSB_ADDRESS_OFST 14
1073
1074static char *printphase[]= {"Lobe media test","Physical insertion",
1075 "Address verification","Roll call poll","Request Parameters"};
1076static char *printerror[]={"Function failure","Signal loss","Reserved",
1077 "Frequency error","Timeout","Ring failure","Ring beaconing",
1078 "Duplicate node address",
1079 "Parameter request-retry count exceeded","Remove received",
1080 "IMPL force received","Duplicate modifier",
1081 "No monitor detected","Monitor contention failed for RPL"};
1082
1083static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page)
1084{
1085 if (ti->page_mask) {
1086 *page = (index >> 8) & ti->page_mask;
1087 index &= ~(ti->page_mask << 8);
1088 }
1089 return ti->sram_virt + index;
1090}
1091
de70b4c8 1092static void dir_open_adapter (struct net_device *dev)
1da177e4 1093{
eda10531 1094 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1095 unsigned char ret_code;
1096 __u16 err;
1097
1098 ti->srb = map_address(ti,
1099 ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)),
1100 &ti->srb_page);
1101 ti->ssb = map_address(ti,
1102 ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)),
1103 &ti->ssb_page);
1104 ti->arb = map_address(ti,
1105 ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)),
1106 &ti->arb_page);
1107 ti->asb = map_address(ti,
1108 ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)),
1109 &ti->asb_page);
1110 ti->current_skb = NULL;
1111 ret_code = readb(ti->init_srb + RETCODE_OFST);
1112 err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST));
1113 if (!ret_code) {
1114 ti->open_status = OPEN; /* TR adapter is now available */
1115 if (ti->open_mode == AUTOMATIC) {
1116 DPRINTK("Adapter reopened.\n");
1117 }
1118 writeb(~SRB_RESP_INT, ti->mmio+ACA_OFFSET+ACA_RESET+ISRP_ODD);
1119 open_sap(EXTENDED_SAP, dev);
1120 return;
1121 }
1122 ti->open_failure = YES;
1123 if (ret_code == 7){
1124 if (err == 0x24) {
1125 if (!ti->auto_speedsave) {
1126 DPRINTK("Open failed: Adapter speed must match "
1127 "ring speed if Automatic Ring Speed Save is "
1128 "disabled.\n");
1129 ti->open_action = FAIL;
1130 }else
1131 DPRINTK("Retrying open to adjust to "
1132 "ring speed, ");
1133 } else if (err == 0x2d) {
1134 DPRINTK("Physical Insertion: No Monitor Detected, ");
1135 printk("retrying after %ds delay...\n",
1136 TR_RETRY_INTERVAL/HZ);
1137 } else if (err == 0x11) {
1138 DPRINTK("Lobe Media Function Failure (0x11), ");
1139 printk(" retrying after %ds delay...\n",
1140 TR_RETRY_INTERVAL/HZ);
1141 } else {
1142 char **prphase = printphase;
1143 char **prerror = printerror;
18eb0893 1144 int pnr = err / 16 - 1;
1145 int enr = err % 16 - 1;
1da177e4 1146 DPRINTK("TR Adapter misc open failure, error code = ");
18eb0893 1147 if (pnr < 0 || pnr >= ARRAY_SIZE(printphase) ||
1148 enr < 0 ||
1149 enr >= ARRAY_SIZE(printerror))
1150 printk("0x%x, invalid Phase/Error.", err);
1151 else
1152 printk("0x%x, Phase: %s, Error: %s\n", err,
1153 prphase[pnr], prerror[enr]);
1da177e4
LT		 1154 printk(" retrying after %ds delay...\n",
1155 TR_RETRY_INTERVAL/HZ);
1156 }
1157 } else DPRINTK("open failed: ret_code = %02X..., ", ret_code);
1158 if (ti->open_action != FAIL) {
1159 if (ti->open_mode==AUTOMATIC){
1160 ti->open_action = REOPEN;
1161 ibmtr_reset_timer(&(ti->tr_timer), dev);
1162 return;
1163 }
1164 wake_up(&ti->wait_for_reset);
1165 return;
1166 }
1167 DPRINTK("FAILURE, CAPUT\n");
1168}
1169
1170/******************************************************************************/
1171
7d12e780 1172static irqreturn_t tok_interrupt(int irq, void *dev_id)
1da177e4
LT		 1173{
1174 unsigned char status;
1175 /* unsigned char status_even ; */
1176 struct tok_info *ti;
1177 struct net_device *dev;
1178#ifdef ENABLE_PAGING
1179 unsigned char save_srpr;
1180#endif
1181
1182 dev = dev_id;
1183#if TR_VERBOSE
7d12e780 1184 DPRINTK("Int from tok_driver, dev : %p irq%d\n", dev,irq);
1da177e4 1185#endif
eda10531 1186 ti = netdev_priv(dev);
1da177e4
LT		 1187 if (ti->sram_phys & 1)
1188 return IRQ_NONE; /* PCMCIA card extraction flag */
1189 spin_lock(&(ti->lock));
1190#ifdef ENABLE_PAGING
1191 save_srpr = readb(ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1192#endif
1193
1194 /* Disable interrupts till processing is finished */
1195 writeb((~INT_ENABLE), ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
1196
1197 /* Reset interrupt for ISA boards */
1198 if (ti->adapter_int_enable)
1199 outb(0, ti->adapter_int_enable);
1200 else /* used for PCMCIA cards */
1201 outb(0, ti->global_int_enable);
1202 if (ti->do_tok_int == FIRST_INT){
1203 initial_tok_int(dev);
1204#ifdef ENABLE_PAGING
1205 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1206#endif
1207 spin_unlock(&(ti->lock));
1208 return IRQ_HANDLED;
1209 }
1210 /* Begin interrupt handler HERE inline to avoid the extra
1211 levels of logic and call depth for the original solution. */
1212 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_ODD);
1213 /*BMSstatus_even = readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) */
1214 /*BMSdebugprintk("tok_interrupt: ISRP_ODD = 0x%x ISRP_EVEN = 0x%x\n", */
1215 /*BMS status,status_even); */
1216
1217 if (status & ADAP_CHK_INT) {
1218 int i;
1219 void __iomem *check_reason;
1220 __u8 check_reason_page = 0;
1221 check_reason = map_address(ti,
1222 ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)),
1223 &check_reason_page);
1224 SET_PAGE(check_reason_page);
1225
1226 DPRINTK("Adapter check interrupt\n");
1227 DPRINTK("8 reason bytes follow: ");
1228 for (i = 0; i < 8; i++, check_reason++)
1229 printk("%02X ", (int) readb(check_reason));
1230 printk("\n");
1231 writeb(~ADAP_CHK_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1232 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRA_EVEN);
1233 DPRINTK("ISRA_EVEN == 0x02%x\n",status);
1234 ti->open_status = CLOSED;
1235 ti->sap_status = CLOSED;
1236 ti->open_mode = AUTOMATIC;
7d17c1d6 1237 netif_carrier_off(dev);
1da177e4
LT		 1238 netif_stop_queue(dev);
1239 ti->open_action = RESTART;
1240 outb(0, dev->base_addr + ADAPTRESET);
1241 ibmtr_reset_timer(&(ti->tr_timer), dev);/*BMS try to reopen*/
1242 spin_unlock(&(ti->lock));
1243 return IRQ_HANDLED;
1244 }
1245 if (readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN)
1246 & (TCR_INT | ERR_INT | ACCESS_INT)) {
1247 DPRINTK("adapter error: ISRP_EVEN : %02x\n",
1248 (int)readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRP_EVEN));
1249 writeb(~(TCR_INT | ERR_INT | ACCESS_INT),
1250 ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
1251 status= readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRA_EVEN);/*BMS*/
1252 DPRINTK("ISRA_EVEN == 0x02%x\n",status);/*BMS*/
1253 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1254#ifdef ENABLE_PAGING
1255 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1256#endif
1257 spin_unlock(&(ti->lock));
1258 return IRQ_HANDLED;
1259 }
1260 if (status & SRB_RESP_INT) { /* SRB response */
1261 SET_PAGE(ti->srb_page);
1262#if TR_VERBOSE
1263 DPRINTK("SRB resp: cmd=%02X rsp=%02X\n",
1264 readb(ti->srb), readb(ti->srb + RETCODE_OFST));
1265#endif
1266 switch (readb(ti->srb)) { /* SRB command check */
1267 case XMIT_DIR_FRAME:{
1268 unsigned char xmit_ret_code;
1269 xmit_ret_code = readb(ti->srb + RETCODE_OFST);
1270 if (xmit_ret_code == 0xff) break;
1271 DPRINTK("error on xmit_dir_frame request: %02X\n",
1272 xmit_ret_code);
1273 if (ti->current_skb) {
1274 dev_kfree_skb_irq(ti->current_skb);
1275 ti->current_skb = NULL;
1276 }
1277 /*dev->tbusy = 0;*/
1278 netif_wake_queue(dev);
1279 if (ti->readlog_pending)
1280 ibmtr_readlog(dev);
1281 break;
1282 }
1283 case XMIT_UI_FRAME:{
1284 unsigned char xmit_ret_code;
1285
1286 xmit_ret_code = readb(ti->srb + RETCODE_OFST);
1287 if (xmit_ret_code == 0xff) break;
1288 DPRINTK("error on xmit_ui_frame request: %02X\n",
1289 xmit_ret_code);
1290 if (ti->current_skb) {
1291 dev_kfree_skb_irq(ti->current_skb);
1292 ti->current_skb = NULL;
1293 }
1294 netif_wake_queue(dev);
1295 if (ti->readlog_pending)
1296 ibmtr_readlog(dev);
1297 break;
1298 }
1299 case DIR_OPEN_ADAPTER:
1300 dir_open_adapter(dev);
1301 break;
1302 case DLC_OPEN_SAP:
1303 if (readb(ti->srb + RETCODE_OFST)) {
1304 DPRINTK("open_sap failed: ret_code = %02X, "
1305 "retrying\n",
1306 (int) readb(ti->srb + RETCODE_OFST));
1307 ti->open_action = REOPEN;
1308 ibmtr_reset_timer(&(ti->tr_timer), dev);
1309 break;
1310 }
1311 ti->exsap_station_id = readw(ti->srb + STATION_ID_OFST);
1312 ti->sap_status = OPEN;/* TR adapter is now available */
1313 if (ti->open_mode==MANUAL){
1314 wake_up(&ti->wait_for_reset);
1315 break;
1316 }
1317 netif_wake_queue(dev);
7d17c1d6 1318 netif_carrier_on(dev);
1da177e4
LT		 1319 break;
1320 case DIR_INTERRUPT:
1321 case DIR_MOD_OPEN_PARAMS:
1322 case DIR_SET_GRP_ADDR:
1323 case DIR_SET_FUNC_ADDR:
1324 case DLC_CLOSE_SAP:
1325 if (readb(ti->srb + RETCODE_OFST))
1326 DPRINTK("error on %02X: %02X\n",
1327 (int) readb(ti->srb + COMMAND_OFST),
1328 (int) readb(ti->srb + RETCODE_OFST));
1329 break;
1330 case DIR_READ_LOG:
1331 if (readb(ti->srb + RETCODE_OFST)){
1332 DPRINTK("error on dir_read_log: %02X\n",
1333 (int) readb(ti->srb + RETCODE_OFST));
1334 netif_wake_queue(dev);
1335 break;
1336 }
1337#if IBMTR_DEBUG_MESSAGES
1338
1339#define LINE_ERRORS_OFST 0
1340#define INTERNAL_ERRORS_OFST 1
1341#define BURST_ERRORS_OFST 2
1342#define AC_ERRORS_OFST 3
1343#define ABORT_DELIMITERS_OFST 4
1344#define LOST_FRAMES_OFST 6
1345#define RECV_CONGEST_COUNT_OFST 7
1346#define FRAME_COPIED_ERRORS_OFST 8
1347#define FREQUENCY_ERRORS_OFST 9
1348#define TOKEN_ERRORS_OFST 10
1349
1350 DPRINTK("Line errors %02X, Internal errors %02X, "
1351 "Burst errors %02X\n" "A/C errors %02X, "
1352 "Abort delimiters %02X, Lost frames %02X\n"
1353 "Receive congestion count %02X, "
1354 "Frame copied errors %02X\nFrequency errors %02X, "
1355 "Token errors %02X\n",
1356 (int) readb(ti->srb + LINE_ERRORS_OFST),
1357 (int) readb(ti->srb + INTERNAL_ERRORS_OFST),
1358 (int) readb(ti->srb + BURST_ERRORS_OFST),
1359 (int) readb(ti->srb + AC_ERRORS_OFST),
1360 (int) readb(ti->srb + ABORT_DELIMITERS_OFST),
1361 (int) readb(ti->srb + LOST_FRAMES_OFST),
1362 (int) readb(ti->srb + RECV_CONGEST_COUNT_OFST),
1363 (int) readb(ti->srb + FRAME_COPIED_ERRORS_OFST),
1364 (int) readb(ti->srb + FREQUENCY_ERRORS_OFST),
1365 (int) readb(ti->srb + TOKEN_ERRORS_OFST));
1366#endif
1367 netif_wake_queue(dev);
1368 break;
1369 default:
1370 DPRINTK("Unknown command %02X encountered\n",
1371 (int) readb(ti->srb));
1372 } /* end switch SRB command check */
1373 writeb(~SRB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1374 } /* if SRB response */
1375 if (status & ASB_FREE_INT) { /* ASB response */
1376 SET_PAGE(ti->asb_page);
1377#if TR_VERBOSE
1378 DPRINTK("ASB resp: cmd=%02X\n", readb(ti->asb));
1379#endif
1380
1381 switch (readb(ti->asb)) { /* ASB command check */
1382 case REC_DATA:
1383 case XMIT_UI_FRAME:
1384 case XMIT_DIR_FRAME:
1385 break;
1386 default:
1387 DPRINTK("unknown command in asb %02X\n",
1388 (int) readb(ti->asb));
1389 } /* switch ASB command check */
1390 if (readb(ti->asb + 2) != 0xff) /* checks ret_code */
1391 DPRINTK("ASB error %02X in cmd %02X\n",
1392 (int) readb(ti->asb + 2), (int) readb(ti->asb));
1393 writeb(~ASB_FREE_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1394 } /* if ASB response */
1395
1396#define STATUS_OFST 6
1397#define NETW_STATUS_OFST 6
1398
1399 if (status & ARB_CMD_INT) { /* ARB response */
1400 SET_PAGE(ti->arb_page);
1401#if TR_VERBOSE
1402 DPRINTK("ARB resp: cmd=%02X\n", readb(ti->arb));
1403#endif
1404
1405 switch (readb(ti->arb)) { /* ARB command check */
1406 case DLC_STATUS:
1407 DPRINTK("DLC_STATUS new status: %02X on station %02X\n",
1408 ntohs(readw(ti->arb + STATUS_OFST)),
1409 ntohs(readw(ti->arb+ STATION_ID_OFST)));
1410 break;
1411 case REC_DATA:
1412 tr_rx(dev);
1413 break;
1414 case RING_STAT_CHANGE:{
1415 unsigned short ring_status;
1416 ring_status= ntohs(readw(ti->arb + NETW_STATUS_OFST));
1417 if (ibmtr_debug_trace & TRC_INIT)
1418 DPRINTK("Ring Status Change...(0x%x)\n",
1419 ring_status);
1420 if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){
1421 netif_stop_queue(dev);
7d17c1d6 1422 netif_carrier_off(dev);
1da177e4
LT		 1423 DPRINTK("Remove received, or Auto-removal error"
1424 ", or Lobe fault\n");
1425 DPRINTK("We'll try to reopen the closed adapter"
1426 " after a %d second delay.\n",
1427 TR_RETRY_INTERVAL/HZ);
1428 /*I was confused: I saw the TR reopening but */
1429 /*forgot:with an RJ45 in an RJ45/ICS adapter */
1430 /*but adapter not in the ring, the TR will */
1431 /* open, and then soon close and come here. */
1432 ti->open_mode = AUTOMATIC;
1433 ti->open_status = CLOSED; /*12/2000 BMS*/
1434 ti->open_action = REOPEN;
1435 ibmtr_reset_timer(&(ti->tr_timer), dev);
1436 } else if (ring_status & LOG_OVERFLOW) {
1437 if(netif_queue_stopped(dev))
1438 ti->readlog_pending = 1;
1439 else
1440 ibmtr_readlog(dev);
1441 }
1442 break;
1443 }
1444 case XMIT_DATA_REQ:
1445 tr_tx(dev);
1446 break;
1447 default:
1448 DPRINTK("Unknown command %02X in arb\n",
1449 (int) readb(ti->arb));
1450 break;
1451 } /* switch ARB command check */
1452 writeb(~ARB_CMD_INT, ti->mmio+ ACA_OFFSET+ACA_RESET + ISRP_ODD);
1453 writeb(ARB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1454 } /* if ARB response */
1455 if (status & SSB_RESP_INT) { /* SSB response */
1456 unsigned char retcode;
1457 SET_PAGE(ti->ssb_page);
1458#if TR_VERBOSE
1459 DPRINTK("SSB resp: cmd=%02X rsp=%02X\n",
1460 readb(ti->ssb), readb(ti->ssb + 2));
1461#endif
1462
1463 switch (readb(ti->ssb)) { /* SSB command check */
1464 case XMIT_DIR_FRAME:
1465 case XMIT_UI_FRAME:
1466 retcode = readb(ti->ssb + 2);
1467 if (retcode && (retcode != 0x22))/* checks ret_code */
1468 DPRINTK("xmit ret_code: %02X xmit error code: "
1469 "%02X\n",
1470 (int)retcode, (int)readb(ti->ssb + 6));
1471 else
9fd3238e 1472 dev->stats.tx_packets++;
1da177e4
LT		 1473 break;
1474 case XMIT_XID_CMD:
1475 DPRINTK("xmit xid ret_code: %02X\n",
1476 (int) readb(ti->ssb + 2));
1477 default:
1478 DPRINTK("Unknown command %02X in ssb\n",
1479 (int) readb(ti->ssb));
1480 } /* SSB command check */
1481 writeb(~SSB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1482 writeb(SSB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1483 } /* if SSB response */
1484#ifdef ENABLE_PAGING
1485 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1486#endif
1487 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1488 spin_unlock(&(ti->lock));
1489 return IRQ_HANDLED;
1490} /*tok_interrupt */
1491
1492/*****************************************************************************/
1493
1494#define INIT_STATUS_OFST 1
1495#define INIT_STATUS_2_OFST 2
1496#define ENCODED_ADDRESS_OFST 8
1497
1498static void initial_tok_int(struct net_device *dev)
1499{
1500
1501 __u32 encoded_addr, hw_encoded_addr;
1502 struct tok_info *ti;
1503 unsigned char init_status; /*BMS 12/2000*/
1504
eda10531 1505 ti = netdev_priv(dev);
1da177e4
LT		 1506
1507 ti->do_tok_int = NOT_FIRST;
1508
1509 /* we assign the shared-ram address for ISA devices */
1510 writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
1511#ifndef PCMCIA
1512 ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
1513#endif
1514 ti->init_srb = map_address(ti,
1515 ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)),
1516 &ti->init_srb_page);
1517 if (ti->page_mask && ti->avail_shared_ram == 127) {
1518 void __iomem *last_512;
1519 __u8 last_512_page=0;
1520 int i;
1521 last_512 = map_address(ti, 0xfe00, &last_512_page);
1522 /* initialize high section of ram (if necessary) */
1523 SET_PAGE(last_512_page);
1524 for (i = 0; i < 512; i++)
1525 writeb(0, last_512 + i);
1526 }
1527 SET_PAGE(ti->init_srb_page);
1528
1529#if TR_VERBOSE
1530 {
1531 int i;
1532
1533 DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page);
1534 DPRINTK("init_srb(%p):", ti->init_srb );
1535 for (i = 0; i < 20; i++)
1536 printk("%02X ", (int) readb(ti->init_srb + i));
1537 printk("\n");
1538 }
1539#endif
1540
1541 hw_encoded_addr = readw(ti->init_srb + ENCODED_ADDRESS_OFST);
1542 encoded_addr = ntohs(hw_encoded_addr);
1543 init_status= /*BMS 12/2000 check for shallow mode possibility (Turbo)*/
1544 readb(ti->init_srb+offsetof(struct srb_init_response,init_status));
1545 /*printk("Initial interrupt: init_status= 0x%02x\n",init_status);*/
1546 ti->ring_speed = init_status & 0x01 ? 16 : 4;
1547 DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n",
1548 ti->ring_speed, (unsigned int)dev->mem_start);
2d6d749d 1549 ti->auto_speedsave = (readb(ti->init_srb+INIT_STATUS_2_OFST) & 4) != 0;
1da177e4
LT		 1550
1551 if (ti->open_mode == MANUAL) wake_up(&ti->wait_for_reset);
1552 else tok_open_adapter((unsigned long)dev);
1553
1554} /*initial_tok_int() */
1555
1556/*****************************************************************************/
1557
1558#define CMD_CORRELATE_OFST 1
1559#define DHB_ADDRESS_OFST 6
1560
1561#define FRAME_LENGTH_OFST 6
1562#define HEADER_LENGTH_OFST 8
1563#define RSAP_VALUE_OFST 9
1564
1565static void tr_tx(struct net_device *dev)
1566{
eda10531 1567 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1568 struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data;
1569 unsigned int hdr_len;
1570 __u32 dhb=0,dhb_base;
1571 void __iomem *dhbuf = NULL;
1572 unsigned char xmit_command;
1573 int i,dhb_len=0x4000,src_len,src_offset;
1574 struct trllc *llc;
1575 struct srb_xmit xsrb;
1576 __u8 dhb_page = 0;
1577 __u8 llc_ssap;
1578
1579 SET_PAGE(ti->asb_page);
1580
1581 if (readb(ti->asb+RETCODE_OFST) != 0xFF) DPRINTK("ASB not free !!!\n");
1582
1583 /* in providing the transmit interrupts, is telling us it is ready for
1584 data and providing a shared memory address for us to stuff with data.
1585 Here we compute the effective address where we will place data.
1586 */
1587 SET_PAGE(ti->arb_page);
1588 dhb=dhb_base=ntohs(readw(ti->arb + DHB_ADDRESS_OFST));
1589 if (ti->page_mask) {
1590 dhb_page = (dhb_base >> 8) & ti->page_mask;
1591 dhb=dhb_base & ~(ti->page_mask << 8);
1592 }
1593 dhbuf = ti->sram_virt + dhb;
1594
1595 /* Figure out the size of the 802.5 header */
1596 if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */
1597 hdr_len = sizeof(struct trh_hdr) - TR_MAXRIFLEN;
1598 else
1599 hdr_len = ((ntohs(trhdr->rcf) & TR_RCF_LEN_MASK) >> 8)
1600 + sizeof(struct trh_hdr) - TR_MAXRIFLEN;
1601
1602 llc = (struct trllc *) (ti->current_skb->data + hdr_len);
1603
1604 llc_ssap = llc->ssap;
1605 SET_PAGE(ti->srb_page);
1606 memcpy_fromio(&xsrb, ti->srb, sizeof(xsrb));
1607 SET_PAGE(ti->asb_page);
1608 xmit_command = xsrb.command;
1609
1610 writeb(xmit_command, ti->asb + COMMAND_OFST);
1611 writew(xsrb.station_id, ti->asb + STATION_ID_OFST);
1612 writeb(llc_ssap, ti->asb + RSAP_VALUE_OFST);
1613 writeb(xsrb.cmd_corr, ti->asb + CMD_CORRELATE_OFST);
1614 writeb(0, ti->asb + RETCODE_OFST);
1615 if ((xmit_command == XMIT_XID_CMD) || (xmit_command == XMIT_TEST_CMD)) {
1616 writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST);
1617 writeb(0x0e, ti->asb + HEADER_LENGTH_OFST);
1618 SET_PAGE(dhb_page);
1619 writeb(AC, dhbuf);
1620 writeb(LLC_FRAME, dhbuf + 1);
1621 for (i = 0; i < TR_ALEN; i++)
1622 writeb((int) 0x0FF, dhbuf + i + 2);
1623 for (i = 0; i < TR_ALEN; i++)
1624 writeb(0, dhbuf + i + TR_ALEN + 2);
1625 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1626 return;
1627 }
1628 /*
1629 * the token ring packet is copied from sk_buff to the adapter
1630 * buffer identified in the command data received with the interrupt.
1631 */
1632 writeb(hdr_len, ti->asb + HEADER_LENGTH_OFST);
1633 writew(htons(ti->current_skb->len), ti->asb + FRAME_LENGTH_OFST);
1634 src_len=ti->current_skb->len;
1635 src_offset=0;
1636 dhb=dhb_base;
1637 while(1) {
1638 if (ti->page_mask) {
1639 dhb_page=(dhb >> 8) & ti->page_mask;
1640 dhb=dhb & ~(ti->page_mask << 8);
1641 dhb_len=0x4000-dhb; /* remaining size of this page */
1642 }
1643 dhbuf = ti->sram_virt + dhb;
1644 SET_PAGE(dhb_page);
1645 if (src_len > dhb_len) {
1646 memcpy_toio(dhbuf,&ti->current_skb->data[src_offset],
1647 dhb_len);
1648 src_len -= dhb_len;
1649 src_offset += dhb_len;
1650 dhb_base+=dhb_len;
1651 dhb=dhb_base;
1652 continue;
1653 }
1654 memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len);
1655 break;
1656 }
1657 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
9fd3238e 1658 dev->stats.tx_bytes += ti->current_skb->len;
1da177e4
LT		 1659 dev_kfree_skb_irq(ti->current_skb);
1660 ti->current_skb = NULL;
1661 netif_wake_queue(dev);
1662 if (ti->readlog_pending)
1663 ibmtr_readlog(dev);
1664} /*tr_tx */
1665
1666/*****************************************************************************/
1667
1668
1669#define RECEIVE_BUFFER_OFST 6
1670#define LAN_HDR_LENGTH_OFST 8
1671#define DLC_HDR_LENGTH_OFST 9
1672
1673#define DSAP_OFST 0
1674#define SSAP_OFST 1
1675#define LLC_OFST 2
1676#define PROTID_OFST 3
1677#define ETHERTYPE_OFST 6
1678
1679static void tr_rx(struct net_device *dev)
1680{
eda10531 1681 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1682 __u32 rbuffer;
1683 void __iomem *rbuf, *rbufdata, *llc;
1684 __u8 rbuffer_page = 0;
1685 unsigned char *data;
1686 unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
1687 unsigned char dlc_hdr_len;
1688 struct sk_buff *skb;
1689 unsigned int skb_size = 0;
1690 int IPv4_p = 0;
1691 unsigned int chksum = 0;
1692 struct iphdr *iph;
1693 struct arb_rec_req rarb;
1694
1695 SET_PAGE(ti->arb_page);
1696 memcpy_fromio(&rarb, ti->arb, sizeof(rarb));
1697 rbuffer = ntohs(rarb.rec_buf_addr) ;
1698 rbuf = map_address(ti, rbuffer, &rbuffer_page);
1699
1700 SET_PAGE(ti->asb_page);
1701
1702 if (readb(ti->asb + RETCODE_OFST) !=0xFF) DPRINTK("ASB not free !!!\n");
1703
1704 writeb(REC_DATA, ti->asb + COMMAND_OFST);
1705 writew(rarb.station_id, ti->asb + STATION_ID_OFST);
1706 writew(rarb.rec_buf_addr, ti->asb + RECEIVE_BUFFER_OFST);
1707
1708 lan_hdr_len = rarb.lan_hdr_len;
1709 if (lan_hdr_len > sizeof(struct trh_hdr)) {
1710 DPRINTK("Linux cannot handle greater than 18 bytes RIF\n");
1711 return;
1712 } /*BMS I added this above just to be very safe */
1713 dlc_hdr_len = readb(ti->arb + DLC_HDR_LENGTH_OFST);
1714 hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
1715
1716 SET_PAGE(rbuffer_page);
1717 llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len;
1718
1719#if TR_VERBOSE
1720 DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
1721 (__u32) offsetof(struct rec_buf, data), (unsigned int) lan_hdr_len);
1722 DPRINTK("llc: %08X rec_buf_addr: %04X dev->mem_start: %lX\n",
1723 llc, ntohs(rarb.rec_buf_addr), dev->mem_start);
1724 DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, "
1725 "ethertype: %04X\n",
1726 (int) readb(llc + DSAP_OFST), (int) readb(llc + SSAP_OFST),
1727 (int) readb(llc + LLC_OFST), (int) readb(llc + PROTID_OFST),
1728 (int) readb(llc+PROTID_OFST+1),(int)readb(llc+PROTID_OFST + 2),
1729 (int) ntohs(readw(llc + ETHERTYPE_OFST)));
1730#endif
1731 if (readb(llc + offsetof(struct trllc, llc)) != UI_CMD) {
1732 SET_PAGE(ti->asb_page);
1733 writeb(DATA_LOST, ti->asb + RETCODE_OFST);
9fd3238e 1734 dev->stats.rx_dropped++;
1da177e4
LT		 1735 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1736 return;
1737 }
1738 length = ntohs(rarb.frame_len);
1739 if (readb(llc + DSAP_OFST) == EXTENDED_SAP &&
1740 readb(llc + SSAP_OFST) == EXTENDED_SAP &&
1741 length >= hdr_len) IPv4_p = 1;
1742#if TR_VERBOSE
1743#define SADDR_OFST 8
1744#define DADDR_OFST 2
1745
1746 if (!IPv4_p) {
1747
1748 void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data);
0795af57
JP		 1749 u8 saddr[6];
1750 u8 daddr[6];
0795af57
JP		 1751 int i;
1752 for (i = 0 ; i < 6 ; i++)
1753 saddr[i] = readb(trhhdr + SADDR_OFST + i);
1754 for (i = 0 ; i < 6 ; i++)
1755 daddr[i] = readb(trhhdr + DADDR_OFST + i);
1da177e4
LT		 1756 DPRINTK("Probably non-IP frame received.\n");
1757 DPRINTK("ssap: %02X dsap: %02X "
e174961c 1758 "saddr: %pM daddr: %pM\n",
1da177e4 1759 readb(llc + SSAP_OFST), readb(llc + DSAP_OFST),
e174961c 1760 saddr, daddr);
1da177e4
LT		 1761 }
1762#endif
1763
1764 /*BMS handle the case she comes in with few hops but leaves with many */
1765 skb_size=length-lan_hdr_len+sizeof(struct trh_hdr)+sizeof(struct trllc);
1766
1767 if (!(skb = dev_alloc_skb(skb_size))) {
1768 DPRINTK("out of memory. frame dropped.\n");
9fd3238e 1769 dev->stats.rx_dropped++;
1da177e4
LT		 1770 SET_PAGE(ti->asb_page);
1771 writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
1772 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1773 return;
1774 }
1775 /*BMS again, if she comes in with few but leaves with many */
1776 skb_reserve(skb, sizeof(struct trh_hdr) - lan_hdr_len);
1777 skb_put(skb, length);
1da177e4
LT		 1778 data = skb->data;
1779 rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len)));
1780 rbufdata = rbuf + offsetof(struct rec_buf, data);
1781
1782 if (IPv4_p) {
1783 /* Copy the headers without checksumming */
1784 memcpy_fromio(data, rbufdata, hdr_len);
1785
1786 /* Watch for padded packets and bogons */
1787 iph= (struct iphdr *)(data+ lan_hdr_len + sizeof(struct trllc));
1788 ip_len = ntohs(iph->tot_len) - sizeof(struct iphdr);
1789 length -= hdr_len;
1790 if ((ip_len <= length) && (ip_len > 7))
1791 length = ip_len;
1792 data += hdr_len;
1793 rbuffer_len -= hdr_len;
1794 rbufdata += hdr_len;
1795 }
1796 /* Copy the payload... */
1797#define BUFFER_POINTER_OFST 2
1798#define BUFFER_LENGTH_OFST 6
1799 for (;;) {
1800 if (ibmtr_debug_trace&TRC_INITV && length < rbuffer_len)
1801 DPRINTK("CURIOUS, length=%d < rbuffer_len=%d\n",
1802 length,rbuffer_len);
1803 if (IPv4_p)
1804 chksum=csum_partial_copy_nocheck((void*)rbufdata,
1805 data,length<rbuffer_len?length:rbuffer_len,chksum);
1806 else
1807 memcpy_fromio(data, rbufdata, rbuffer_len);
1808 rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ;
1809 if (!rbuffer)
1810 break;
1811 rbuffer -= 2;
1812 length -= rbuffer_len;
1813 data += rbuffer_len;
1814 rbuf = map_address(ti, rbuffer, &rbuffer_page);
1815 SET_PAGE(rbuffer_page);
1816 rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST));
1817 rbufdata = rbuf + offsetof(struct rec_buf, data);
1818 }
1819
1820 SET_PAGE(ti->asb_page);
1821 writeb(0, ti->asb + offsetof(struct asb_rec, ret_code));
1822
1823 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1824
9fd3238e
SH		 1825 dev->stats.rx_bytes += skb->len;
1826 dev->stats.rx_packets++;
1da177e4
LT		 1827
1828 skb->protocol = tr_type_trans(skb, dev);
1829 if (IPv4_p) {
1830 skb->csum = chksum;
ee28b0da 1831 skb->ip_summed = CHECKSUM_COMPLETE;
1da177e4
LT		 1832 }
1833 netif_rx(skb);
1da177e4
LT		 1834} /*tr_rx */
1835
1836/*****************************************************************************/
1837
de70b4c8 1838static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
1da177e4
LT		 1839{
1840 tmr->expires = jiffies + TR_RETRY_INTERVAL;
1841 tmr->data = (unsigned long) dev;
1842 tmr->function = tok_rerun;
1843 init_timer(tmr);
1844 add_timer(tmr);
1845}
1846
1847/*****************************************************************************/
1848
27cd6ae5
HE		 1849static void tok_rerun(unsigned long dev_addr)
1850{
1da177e4 1851 struct net_device *dev = (struct net_device *)dev_addr;
eda10531 1852 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1853
1854 if ( ti->open_action == RESTART){
1855 ti->do_tok_int = FIRST_INT;
1856 outb(0, dev->base_addr + ADAPTRESETREL);
1857#ifdef ENABLE_PAGING
1858 if (ti->page_mask)
1859 writeb(SRPR_ENABLE_PAGING,
1860 ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1861#endif
1862
1863 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1864 } else
1865 tok_open_adapter(dev_addr);
1866}
1867
1868/*****************************************************************************/
1869
de70b4c8 1870static void ibmtr_readlog(struct net_device *dev)
1da177e4
LT		 1871{
1872 struct tok_info *ti;
1873
eda10531 1874 ti = netdev_priv(dev);
1da177e4
LT		 1875
1876 ti->readlog_pending = 0;
1877 SET_PAGE(ti->srb_page);
1878 writeb(DIR_READ_LOG, ti->srb);
1879 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1880 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1881
1882 netif_stop_queue(dev);
1883
1884}
1885
1886/*****************************************************************************/
1887
de70b4c8 1888static int ibmtr_change_mtu(struct net_device *dev, int mtu)
1da177e4 1889{
eda10531 1890 struct tok_info *ti = netdev_priv(dev);
1da177e4
LT		 1891
1892 if (ti->ring_speed == 16 && mtu > ti->maxmtu16)
1893 return -EINVAL;
1894 if (ti->ring_speed == 4 && mtu > ti->maxmtu4)
1895 return -EINVAL;
1896 dev->mtu = mtu;
1897 return 0;
1898}
1899
1900/*****************************************************************************/
1901#ifdef MODULE
1902
1903/* 3COM 3C619C supports 8 interrupts, 32 I/O ports */
1904static struct net_device *dev_ibmtr[IBMTR_MAX_ADAPTERS];
1905static int io[IBMTR_MAX_ADAPTERS] = { 0xa20, 0xa24 };
1906static int irq[IBMTR_MAX_ADAPTERS];
1907static int mem[IBMTR_MAX_ADAPTERS];
1908
1909MODULE_LICENSE("GPL");
1910
1911module_param_array(io, int, NULL, 0);
1912module_param_array(irq, int, NULL, 0);
1913module_param_array(mem, int, NULL, 0);
1914
1915static int __init ibmtr_init(void)
1916{
1917 int i;
1918 int count=0;
1919
1920 find_turbo_adapters(io);
1921
c65d3198 1922 for (i = 0; i < IBMTR_MAX_ADAPTERS && io[i]; i++) {
1da177e4
LT		 1923 struct net_device *dev;
1924 irq[i] = 0;
1925 mem[i] = 0;
1926 dev = alloc_trdev(sizeof(struct tok_info));
1927 if (dev == NULL) {
1928 if (i == 0)
1929 return -ENOMEM;
1930 break;
1931 }
1932 dev->base_addr = io[i];
1933 dev->irq = irq[i];
1934 dev->mem_start = mem[i];
1935
1936 if (ibmtr_probe_card(dev)) {
1937 free_netdev(dev);
1938 continue;
1939 }
1940 dev_ibmtr[i] = dev;
1941 count++;
1942 }
1943 if (count) return 0;
1944 printk("ibmtr: register_netdev() returned non-zero.\n");
1945 return -EIO;
1946}
1947module_init(ibmtr_init);
1948
1949static void __exit ibmtr_cleanup(void)
1950{
1951 int i;
1952
1953 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++){
1954 if (!dev_ibmtr[i])
1955 continue;
1956 unregister_netdev(dev_ibmtr[i]);
1957 ibmtr_cleanup_card(dev_ibmtr[i]);
1958 free_netdev(dev_ibmtr[i]);
1959 }
1960}
1961module_exit(ibmtr_cleanup);
1962#endif
Clone of davem's net-next-2.6 tree