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be2net: Fix CQE_STATUS_EXTD_SHIFT define
[linux-2.6/x86.git] / drivers / net / tokenring / ibmtr.c
blob6a3c7510afd98a04dcfeb5fe4ecd82f92848e4be
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
99 * the adapter into isa compatiblity mode.
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
106 in 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>
111
112 #ifdef PCMCIA /* required for ibmtr_cs.c to build */
113 #undef MODULE /* yes, really */
114 #undef ENABLE_PAGING
115 #else
116 #define ENABLE_PAGING 1
117 #endif
118
119 /* changes the output format of driver initialization */
120 #define TR_VERBOSE 0
121
122 /* some 95 OS send many non UI frame; this allow removing the warning */
123 #define TR_FILTERNONUI 1
124
125 #include <linux/ioport.h>
126 #include <linux/netdevice.h>
127 #include <linux/ip.h>
128 #include <linux/trdevice.h>
129 #include <linux/ibmtr.h>
130
131 #include <net/checksum.h>
132
133 #include <asm/io.h>
134
135 #define DPRINTK(format, args...) printk("%s: " format, dev->name , ## args)
136 #define DPRINTD(format, args...) DummyCall("%s: " format, dev->name , ## args)
137
138 /* version and credits */
139 #ifndef PCMCIA
140 static char version[] __devinitdata =
141 "\nibmtr.c: v1.3.57 8/ 7/94 Peter De Schrijver and Mark Swanson\n"
142 " v2.1.125 10/20/98 Paul Norton <pnorton@ieee.org>\n"
143 " v2.2.0 12/30/98 Joel Sloan <jjs@c-me.com>\n"
144 " v2.2.1 02/08/00 Mike Sullivan <sullivam@us.ibm.com>\n"
145 " v2.2.2 07/27/00 Burt Silverman <burts@us.ibm.com>\n"
146 " v2.4.0 03/01/01 Mike Sullivan <sullivan@us.ibm.com>\n";
147 #endif
148
149 /* this allows displaying full adapter information */
150
151 static char *channel_def[] __devinitdata = { "ISA", "MCA", "ISA P&P" };
152
153 static char pcchannelid[] __devinitdata = {
154 0x05, 0x00, 0x04, 0x09,
155 0x04, 0x03, 0x04, 0x0f,
156 0x03, 0x06, 0x03, 0x01,
157 0x03, 0x01, 0x03, 0x00,
158 0x03, 0x09, 0x03, 0x09,
159 0x03, 0x00, 0x02, 0x00
160 };
161
162 static char mcchannelid[] __devinitdata = {
163 0x04, 0x0d, 0x04, 0x01,
164 0x05, 0x02, 0x05, 0x03,
165 0x03, 0x06, 0x03, 0x03,
166 0x05, 0x08, 0x03, 0x04,
167 0x03, 0x05, 0x03, 0x01,
168 0x03, 0x08, 0x02, 0x00
169 };
170
171 static char __devinit *adapter_def(char type)
172 {
173 switch (type) {
174 case 0xF: return "PC Adapter | PC Adapter II | Adapter/A";
175 case 0xE: return "16/4 Adapter | 16/4 Adapter/A (long)";
176 case 0xD: return "16/4 Adapter/A (short) | 16/4 ISA-16 Adapter";
177 case 0xC: return "Auto 16/4 Adapter";
178 default: return "adapter (unknown type)";
179 };
180 };
181
182 #define TRC_INIT 0x01 /* Trace initialization & PROBEs */
183 #define TRC_INITV 0x02 /* verbose init trace points */
184 static unsigned char ibmtr_debug_trace = 0;
185
186 static int ibmtr_probe1(struct net_device *dev, int ioaddr);
187 static unsigned char get_sram_size(struct tok_info *adapt_info);
188 static int trdev_init(struct net_device *dev);
189 static int tok_open(struct net_device *dev);
190 static int tok_init_card(struct net_device *dev);
191 static void tok_open_adapter(unsigned long dev_addr);
192 static void open_sap(unsigned char type, struct net_device *dev);
193 static void tok_set_multicast_list(struct net_device *dev);
194 static netdev_tx_t tok_send_packet(struct sk_buff *skb,
195 struct net_device *dev);
196 static int tok_close(struct net_device *dev);
197 static irqreturn_t tok_interrupt(int irq, void *dev_id);
198 static void initial_tok_int(struct net_device *dev);
199 static void tr_tx(struct net_device *dev);
200 static void tr_rx(struct net_device *dev);
201 static void ibmtr_reset_timer(struct timer_list*tmr,struct net_device *dev);
202 static void tok_rerun(unsigned long dev_addr);
203 static void ibmtr_readlog(struct net_device *dev);
204 static int ibmtr_change_mtu(struct net_device *dev, int mtu);
205 static void find_turbo_adapters(int *iolist);
206
207 static int ibmtr_portlist[IBMTR_MAX_ADAPTERS+1] __devinitdata = {
208 0xa20, 0xa24, 0, 0, 0
209 };
210 static int __devinitdata turbo_io[IBMTR_MAX_ADAPTERS] = {0};
211 static int __devinitdata turbo_irq[IBMTR_MAX_ADAPTERS] = {0};
212 static int __devinitdata turbo_searched = 0;
213
214 #ifndef PCMCIA
215 static __u32 ibmtr_mem_base __devinitdata = 0xd0000;
216 #endif
217
218 static void __devinit PrtChanID(char *pcid, short stride)
219 {
220 short i, j;
221 for (i = 0, j = 0; i < 24; i++, j += stride)
222 printk("%1x", ((int) pcid[j]) & 0x0f);
223 printk("\n");
224 }
225
226 static void __devinit HWPrtChanID(void __iomem *pcid, short stride)
227 {
228 short i, j;
229 for (i = 0, j = 0; i < 24; i++, j += stride)
230 printk("%1x", ((int) readb(pcid + j)) & 0x0f);
231 printk("\n");
232 }
233
234 /* We have to ioremap every checked address, because isa_readb is
235 * going away.
236 */
237
238 static void __devinit find_turbo_adapters(int *iolist)
239 {
240 int ram_addr;
241 int index=0;
242 void __iomem *chanid;
243 int found_turbo=0;
244 unsigned char *tchanid, ctemp;
245 int i, j;
246 unsigned long jif;
247 void __iomem *ram_mapped ;
248
249 if (turbo_searched == 1) return;
250 turbo_searched=1;
251 for (ram_addr=0xC0000; ram_addr < 0xE0000; ram_addr+=0x2000) {
252
253 __u32 intf_tbl=0;
254
255 found_turbo=1;
256 ram_mapped = ioremap((u32)ram_addr,0x1fff) ;
257 if (ram_mapped==NULL)
258 continue ;
259 chanid=(CHANNEL_ID + ram_mapped);
260 tchanid=pcchannelid;
261 ctemp=readb(chanid) & 0x0f;
262 if (ctemp != *tchanid) continue;
263 for (i=2,j=1; i<=46; i=i+2,j++) {
264 if ((readb(chanid+i) & 0x0f) != tchanid[j]){
265 found_turbo=0;
266 break;
267 }
268 }
269 if (!found_turbo) continue;
270
271 writeb(0x90, ram_mapped+0x1E01);
272 for(i=2; i<0x0f; i++) {
273 writeb(0x00, ram_mapped+0x1E01+i);
274 }
275 writeb(0x00, ram_mapped+0x1E01);
276 for(jif=jiffies+TR_BUSY_INTERVAL; time_before_eq(jiffies,jif););
277 intf_tbl=ntohs(readw(ram_mapped+ACA_OFFSET+ACA_RW+WRBR_EVEN));
278 if (intf_tbl) {
279 #if IBMTR_DEBUG_MESSAGES
280 printk("ibmtr::find_turbo_adapters, Turbo found at "
281 "ram_addr %x\n",ram_addr);
282 printk("ibmtr::find_turbo_adapters, interface_table ");
283 for(i=0; i<6; i++) {
284 printk("%x:",readb(ram_addr+intf_tbl+i));
285 }
286 printk("\n");
287 #endif
288 turbo_io[index]=ntohs(readw(ram_mapped+intf_tbl+4));
289 turbo_irq[index]=readb(ram_mapped+intf_tbl+3);
290 outb(0, turbo_io[index] + ADAPTRESET);
291 for(jif=jiffies+TR_RST_TIME;time_before_eq(jiffies,jif););
292 outb(0, turbo_io[index] + ADAPTRESETREL);
293 index++;
294 continue;
295 }
296 #if IBMTR_DEBUG_MESSAGES
297 printk("ibmtr::find_turbo_adapters, ibmtr card found at"
298 " %x but not a Turbo model\n",ram_addr);
299 #endif
300 iounmap(ram_mapped) ;
301 } /* for */
302 for(i=0; i<IBMTR_MAX_ADAPTERS; i++) {
303 if(!turbo_io[i]) break;
304 for (j=0; j<IBMTR_MAX_ADAPTERS; j++) {
305 if ( iolist[j] && iolist[j] != turbo_io[i]) continue;
306 iolist[j]=turbo_io[i];
307 break;
308 }
309 }
310 }
311
312 static void ibmtr_cleanup_card(struct net_device *dev)
313 {
314 if (dev->base_addr) {
315 outb(0,dev->base_addr+ADAPTRESET);
316
317 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
318
319 outb(0,dev->base_addr+ADAPTRESETREL);
320 }
321
322 #ifndef PCMCIA
323 free_irq(dev->irq, dev);
324 release_region(dev->base_addr, IBMTR_IO_EXTENT);
325
326 {
327 struct tok_info *ti = netdev_priv(dev);
328 iounmap(ti->mmio);
329 iounmap(ti->sram_virt);
330 }
331 #endif
332 }
333
334 /****************************************************************************
335 * ibmtr_probe(): Routine specified in the network device structure
336 * to probe for an IBM Token Ring Adapter. Routine outline:
337 * I. Interrogate hardware to determine if an adapter exists
338 * and what the speeds and feeds are
339 * II. Setup data structures to control execution based upon
340 * adapter characteristics.
341 *
342 * We expect ibmtr_probe to be called once for each device entry
343 * which references it.
344 ****************************************************************************/
345
346 static int __devinit ibmtr_probe(struct net_device *dev)
347 {
348 int i;
349 int base_addr = dev->base_addr;
350
351 if (base_addr && base_addr <= 0x1ff) /* Don't probe at all. */
352 return -ENXIO;
353 if (base_addr > 0x1ff) { /* Check a single specified location. */
354 if (!ibmtr_probe1(dev, base_addr)) return 0;
355 return -ENODEV;
356 }
357 find_turbo_adapters(ibmtr_portlist);
358 for (i = 0; ibmtr_portlist[i]; i++) {
359 int ioaddr = ibmtr_portlist[i];
360
361 if (!ibmtr_probe1(dev, ioaddr)) return 0;
362 }
363 return -ENODEV;
364 }
365
366 int __devinit ibmtr_probe_card(struct net_device *dev)
367 {
368 int err = ibmtr_probe(dev);
369 if (!err) {
370 err = register_netdev(dev);
371 if (err)
372 ibmtr_cleanup_card(dev);
373 }
374 return err;
375 }
376
377 /*****************************************************************************/
378
379 static int __devinit ibmtr_probe1(struct net_device *dev, int PIOaddr)
380 {
381
382 unsigned char segment, intr=0, irq=0, i, j, cardpresent=NOTOK, temp=0;
383 void __iomem * t_mmio = NULL;
384 struct tok_info *ti = netdev_priv(dev);
385 void __iomem *cd_chanid;
386 unsigned char *tchanid, ctemp;
387 #ifndef PCMCIA
388 unsigned char t_irq=0;
389 unsigned long timeout;
390 static int version_printed;
391 #endif
392
393 /* Query the adapter PIO base port which will return
394 * indication of where MMIO was placed. We also have a
395 * coded interrupt number.
396 */
397 segment = inb(PIOaddr);
398 if (segment < 0x40 || segment > 0xe0) {
399 /* Out of range values so we'll assume non-existent IO device
400 * but this is not necessarily a problem, esp if a turbo
401 * adapter is being used. */
402 #if IBMTR_DEBUG_MESSAGES
403 DPRINTK("ibmtr_probe1(): unhappy that inb(0x%X) == 0x%X, "
404 "Hardware Problem?\n",PIOaddr,segment);
405 #endif
406 return -ENODEV;
407 }
408 /*
409 * Compute the linear base address of the MMIO area
410 * as LINUX doesn't care about segments
411 */
412 t_mmio = ioremap(((__u32) (segment & 0xfc) << 11) + 0x80000,2048);
413 if (!t_mmio) {
414 DPRINTK("Cannot remap mmiobase memory area") ;
415 return -ENODEV ;
416 }
417 intr = segment & 0x03; /* low bits is coded interrupt # */
418 if (ibmtr_debug_trace & TRC_INIT)
419 DPRINTK("PIOaddr: %4hx seg/intr: %2x mmio base: %p intr: %d\n"
420 , PIOaddr, (int) segment, t_mmio, (int) intr);
421
422 /*
423 * Now we will compare expected 'channelid' strings with
424 * what we is there to learn of ISA/MCA or not TR card
425 */
426 #ifdef PCMCIA
427 iounmap(t_mmio);
428 t_mmio = ti->mmio; /*BMS to get virtual address */
429 irq = ti->irq; /*BMS to display the irq! */
430 #endif
431 cd_chanid = (CHANNEL_ID + t_mmio); /* for efficiency */
432 tchanid = pcchannelid;
433 cardpresent = TR_ISA; /* try ISA */
434
435 /* Suboptimize knowing first byte different */
436 ctemp = readb(cd_chanid) & 0x0f;
437 if (ctemp != *tchanid) { /* NOT ISA card, try MCA */
438 tchanid = mcchannelid;
439 cardpresent = TR_MCA;
440 if (ctemp != *tchanid) /* Neither ISA nor MCA */
441 cardpresent = NOTOK;
442 }
443 if (cardpresent != NOTOK) {
444 /* Know presumed type, try rest of ID */
445 for (i = 2, j = 1; i <= 46; i = i + 2, j++) {
446 if( (readb(cd_chanid+i)&0x0f) == tchanid[j]) continue;
447 /* match failed, not TR card */
448 cardpresent = NOTOK;
449 break;
450 }
451 }
452 /*
453 * If we have an ISA board check for the ISA P&P version,
454 * as it has different IRQ settings
455 */
456 if (cardpresent == TR_ISA && (readb(AIPFID + t_mmio) == 0x0e))
457 cardpresent = TR_ISAPNP;
458 if (cardpresent == NOTOK) { /* "channel_id" did not match, report */
459 if (!(ibmtr_debug_trace & TRC_INIT)) {
460 #ifndef PCMCIA
461 iounmap(t_mmio);
462 #endif
463 return -ENODEV;
464 }
465 DPRINTK( "Channel ID string not found for PIOaddr: %4hx\n",
466 PIOaddr);
467 DPRINTK("Expected for ISA: ");
468 PrtChanID(pcchannelid, 1);
469 DPRINTK(" found: ");
470 /* BMS Note that this can be misleading, when hardware is flaky, because you
471 are reading it a second time here. So with my flaky hardware, I'll see my-
472 self in this block, with the HW ID matching the ISA ID exactly! */
473 HWPrtChanID(cd_chanid, 2);
474 DPRINTK("Expected for MCA: ");
475 PrtChanID(mcchannelid, 1);
476 }
477 /* Now, setup some of the pl0 buffers for this driver.. */
478 /* If called from PCMCIA, it is already set up, so no need to
479 waste the memory, just use the existing structure */
480 #ifndef PCMCIA
481 ti->mmio = t_mmio;
482 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++) {
483 if (turbo_io[i] != PIOaddr)
484 continue;
485 #if IBMTR_DEBUG_MESSAGES
486 printk("ibmtr::tr_probe1, setting PIOaddr %x to Turbo\n",
487 PIOaddr);
488 #endif
489 ti->turbo = 1;
490 t_irq = turbo_irq[i];
491 }
492 #endif /* !PCMCIA */
493 ti->readlog_pending = 0;
494 init_waitqueue_head(&ti->wait_for_reset);
495
496 /* if PCMCIA, the card can be recognized as either TR_ISA or TR_ISAPNP
497 * depending which card is inserted. */
498
499 #ifndef PCMCIA
500 switch (cardpresent) {
501 case TR_ISA:
502 if (intr == 0) irq = 9; /* irq2 really is irq9 */
503 if (intr == 1) irq = 3;
504 if (intr == 2) irq = 6;
505 if (intr == 3) irq = 7;
506 ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
507 break;
508 case TR_MCA:
509 if (intr == 0) irq = 9;
510 if (intr == 1) irq = 3;
511 if (intr == 2) irq = 10;
512 if (intr == 3) irq = 11;
513 ti->global_int_enable = 0;
514 ti->adapter_int_enable = 0;
515 ti->sram_phys=(__u32)(inb(PIOaddr+ADAPTRESETREL) & 0xfe) << 12;
516 break;
517 case TR_ISAPNP:
518 if (!t_irq) {
519 if (intr == 0) irq = 9;
520 if (intr == 1) irq = 3;
521 if (intr == 2) irq = 10;
522 if (intr == 3) irq = 11;
523 } else
524 irq=t_irq;
525 timeout = jiffies + TR_SPIN_INTERVAL;
526 while (!readb(ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN)){
527 if (!time_after(jiffies, timeout)) continue;
528 DPRINTK( "Hardware timeout during initialization.\n");
529 iounmap(t_mmio);
530 return -ENODEV;
531 }
532 ti->sram_phys =
533 ((__u32)readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_EVEN)<<12);
534 ti->adapter_int_enable = PIOaddr + ADAPTINTREL;
535 break;
536 } /*end switch (cardpresent) */
537 #endif /*not PCMCIA */
538
539 if (ibmtr_debug_trace & TRC_INIT) { /* just report int */
540 DPRINTK("irq=%d", irq);
541 printk(", sram_phys=0x%x", ti->sram_phys);
542 if(ibmtr_debug_trace&TRC_INITV){ /* full chat in verbose only */
543 DPRINTK(", ti->mmio=%p", ti->mmio);
544 printk(", segment=%02X", segment);
545 }
546 printk(".\n");
547 }
548
549 /* Get hw address of token ring card */
550 j = 0;
551 for (i = 0; i < 0x18; i = i + 2) {
552 /* technical reference states to do this */
553 temp = readb(ti->mmio + AIP + i) & 0x0f;
554 ti->hw_address[j] = temp;
555 if (j & 1)
556 dev->dev_addr[(j / 2)] =
557 ti->hw_address[j]+ (ti->hw_address[j - 1] << 4);
558 ++j;
559 }
560 /* get Adapter type: 'F' = Adapter/A, 'E' = 16/4 Adapter II,... */
561 ti->adapter_type = readb(ti->mmio + AIPADAPTYPE);
562
563 /* get Data Rate: F=4Mb, E=16Mb, D=4Mb & 16Mb ?? */
564 ti->data_rate = readb(ti->mmio + AIPDATARATE);
565
566 /* Get Early Token Release support?: F=no, E=4Mb, D=16Mb, C=4&16Mb */
567 ti->token_release = readb(ti->mmio + AIPEARLYTOKEN);
568
569 /* How much shared RAM is on adapter ? */
570 if (ti->turbo) {
571 ti->avail_shared_ram=127;
572 } else {
573 ti->avail_shared_ram = get_sram_size(ti);/*in 512 byte units */
574 }
575 /* We need to set or do a bunch of work here based on previous results*/
576 /* Support paging? What sizes?: F=no, E=16k, D=32k, C=16 & 32k */
577 ti->shared_ram_paging = readb(ti->mmio + AIPSHRAMPAGE);
578
579 /* Available DHB 4Mb size: F=2048, E=4096, D=4464 */
580 switch (readb(ti->mmio + AIP4MBDHB)) {
581 case 0xe: ti->dhb_size4mb = 4096; break;
582 case 0xd: ti->dhb_size4mb = 4464; break;
583 default: ti->dhb_size4mb = 2048; break;
584 }
585
586 /* Available DHB 16Mb size: F=2048, E=4096, D=8192, C=16384, B=17960 */
587 switch (readb(ti->mmio + AIP16MBDHB)) {
588 case 0xe: ti->dhb_size16mb = 4096; break;
589 case 0xd: ti->dhb_size16mb = 8192; break;
590 case 0xc: ti->dhb_size16mb = 16384; break;
591 case 0xb: ti->dhb_size16mb = 17960; break;
592 default: ti->dhb_size16mb = 2048; break;
593 }
594
595 /* We must figure out how much shared memory space this adapter
596 * will occupy so that if there are two adapters we can fit both
597 * in. Given a choice, we will limit this adapter to 32K. The
598 * maximum space will will use for two adapters is 64K so if the
599 * adapter we are working on demands 64K (it also doesn't support
600 * paging), then only one adapter can be supported.
601 */
602
603 /*
604 * determine how much of total RAM is mapped into PC space
605 */
606 ti->mapped_ram_size= /*sixteen to onehundredtwentyeight 512byte blocks*/
607 1<< ((readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03) + 4);
608 ti->page_mask = 0;
609 if (ti->turbo) ti->page_mask=0xf0;
610 else if (ti->shared_ram_paging == 0xf); /* No paging in adapter */
611 else {
612 #ifdef ENABLE_PAGING
613 unsigned char pg_size = 0;
614 /* BMS: page size: PCMCIA, use configuration register;
615 ISAPNP, use LANAIDC config tool from www.ibm.com */
616 switch (ti->shared_ram_paging) {
617 case 0xf:
618 break;
619 case 0xe:
620 ti->page_mask = (ti->mapped_ram_size == 32) ? 0xc0 : 0;
621 pg_size = 32; /* 16KB page size */
622 break;
623 case 0xd:
624 ti->page_mask = (ti->mapped_ram_size == 64) ? 0x80 : 0;
625 pg_size = 64; /* 32KB page size */
626 break;
627 case 0xc:
628 switch (ti->mapped_ram_size) {
629 case 32:
630 ti->page_mask = 0xc0;
631 pg_size = 32;
632 break;
633 case 64:
634 ti->page_mask = 0x80;
635 pg_size = 64;
636 break;
637 }
638 break;
639 default:
640 DPRINTK("Unknown shared ram paging info %01X\n",
641 ti->shared_ram_paging);
642 iounmap(t_mmio);
643 return -ENODEV;
644 break;
645 } /*end switch shared_ram_paging */
646
647 if (ibmtr_debug_trace & TRC_INIT)
648 DPRINTK("Shared RAM paging code: %02X, "
649 "mapped RAM size: %dK, shared RAM size: %dK, "
650 "page mask: %02X\n:",
651 ti->shared_ram_paging, ti->mapped_ram_size / 2,
652 ti->avail_shared_ram / 2, ti->page_mask);
653 #endif /*ENABLE_PAGING */
654 }
655
656 #ifndef PCMCIA
657 /* finish figuring the shared RAM address */
658 if (cardpresent == TR_ISA) {
659 static __u32 ram_bndry_mask[] =
660 { 0xffffe000, 0xffffc000, 0xffff8000, 0xffff0000 };
661 __u32 new_base, rrr_32, chk_base, rbm;
662
663 rrr_32=readb(ti->mmio+ACA_OFFSET+ACA_RW+RRR_ODD) >> 2 & 0x03;
664 rbm = ram_bndry_mask[rrr_32];
665 new_base = (ibmtr_mem_base + (~rbm)) & rbm;/* up to boundary */
666 chk_base = new_base + (ti->mapped_ram_size << 9);
667 if (chk_base > (ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE)) {
668 DPRINTK("Shared RAM for this adapter (%05x) exceeds "
669 "driver limit (%05x), adapter not started.\n",
670 chk_base, ibmtr_mem_base + IBMTR_SHARED_RAM_SIZE);
671 iounmap(t_mmio);
672 return -ENODEV;
673 } else { /* seems cool, record what we have figured out */
674 ti->sram_base = new_base >> 12;
675 ibmtr_mem_base = chk_base;
676 }
677 }
678 else ti->sram_base = ti->sram_phys >> 12;
679
680 /* The PCMCIA has already got the interrupt line and the io port,
681 so no chance of anybody else getting it - MLP */
682 if (request_irq(dev->irq = irq, &tok_interrupt, 0, "ibmtr", dev) != 0) {
683 DPRINTK("Could not grab irq %d. Halting Token Ring driver.\n",
684 irq);
685 iounmap(t_mmio);
686 return -ENODEV;
687 }
688 /*?? Now, allocate some of the PIO PORTs for this driver.. */
689 /* record PIOaddr range as busy */
690 if (!request_region(PIOaddr, IBMTR_IO_EXTENT, "ibmtr")) {
691 DPRINTK("Could not grab PIO range. Halting driver.\n");
692 free_irq(dev->irq, dev);
693 iounmap(t_mmio);
694 return -EBUSY;
695 }
696
697 if (!version_printed++) {
698 printk(version);
699 }
700 #endif /* !PCMCIA */
701 DPRINTK("%s %s found\n",
702 channel_def[cardpresent - 1], adapter_def(ti->adapter_type));
703 DPRINTK("using irq %d, PIOaddr %hx, %dK shared RAM.\n",
704 irq, PIOaddr, ti->mapped_ram_size / 2);
705 DPRINTK("Hardware address : %pM\n", dev->dev_addr);
706 if (ti->page_mask)
707 DPRINTK("Shared RAM paging enabled. "
708 "Page size: %uK Shared Ram size %dK\n",
709 ((ti->page_mask^0xff)+1) >>2, ti->avail_shared_ram / 2);
710 else
711 DPRINTK("Shared RAM paging disabled. ti->page_mask %x\n",
712 ti->page_mask);
713
714 /* Calculate the maximum DHB we can use */
715 /* two cases where avail_shared_ram doesn't equal mapped_ram_size:
716 1. avail_shared_ram is 127 but mapped_ram_size is 128 (typical)
717 2. user has configured adapter for less than avail_shared_ram
718 but is not using paging (she should use paging, I believe)
719 */
720 if (!ti->page_mask) {
721 ti->avail_shared_ram=
722 min(ti->mapped_ram_size,ti->avail_shared_ram);
723 }
724
725 switch (ti->avail_shared_ram) {
726 case 16: /* 8KB shared RAM */
727 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)2048);
728 ti->rbuf_len4 = 1032;
729 ti->rbuf_cnt4=2;
730 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)2048);
731 ti->rbuf_len16 = 1032;
732 ti->rbuf_cnt16=2;
733 break;
734 case 32: /* 16KB shared RAM */
735 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
736 ti->rbuf_len4 = 1032;
737 ti->rbuf_cnt4=4;
738 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)4096);
739 ti->rbuf_len16 = 1032; /*1024 usable */
740 ti->rbuf_cnt16=4;
741 break;
742 case 64: /* 32KB shared RAM */
743 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
744 ti->rbuf_len4 = 1032;
745 ti->rbuf_cnt4=6;
746 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)10240);
747 ti->rbuf_len16 = 1032;
748 ti->rbuf_cnt16=6;
749 break;
750 case 127: /* 63.5KB shared RAM */
751 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
752 ti->rbuf_len4 = 1032;
753 ti->rbuf_cnt4=6;
754 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)16384);
755 ti->rbuf_len16 = 1032;
756 ti->rbuf_cnt16=16;
757 break;
758 case 128: /* 64KB shared RAM */
759 ti->dhb_size4mb = min(ti->dhb_size4mb, (unsigned short)4464);
760 ti->rbuf_len4 = 1032;
761 ti->rbuf_cnt4=6;
762 ti->dhb_size16mb = min(ti->dhb_size16mb, (unsigned short)17960);
763 ti->rbuf_len16 = 1032;
764 ti->rbuf_cnt16=16;
765 break;
766 default:
767 ti->dhb_size4mb = 2048;
768 ti->rbuf_len4 = 1032;
769 ti->rbuf_cnt4=2;
770 ti->dhb_size16mb = 2048;
771 ti->rbuf_len16 = 1032;
772 ti->rbuf_cnt16=2;
773 break;
774 }
775 /* this formula is not smart enough for the paging case
776 ti->rbuf_cnt<x> = (ti->avail_shared_ram * BLOCKSZ - ADAPT_PRIVATE -
777 ARBLENGTH - SSBLENGTH - DLC_MAX_SAP * SAPLENGTH -
778 DLC_MAX_STA * STALENGTH - ti->dhb_size<x>mb * NUM_DHB -
779 SRBLENGTH - ASBLENGTH) / ti->rbuf_len<x>;
780 */
781 ti->maxmtu16 = (ti->rbuf_len16 - 8) * ti->rbuf_cnt16 - TR_HLEN;
782 ti->maxmtu4 = (ti->rbuf_len4 - 8) * ti->rbuf_cnt4 - TR_HLEN;
783 /*BMS assuming 18 bytes of Routing Information (usually works) */
784 DPRINTK("Maximum Receive Internet Protocol MTU 16Mbps: %d, 4Mbps: %d\n",
785 ti->maxmtu16, ti->maxmtu4);
786
787 dev->base_addr = PIOaddr; /* set the value for device */
788 dev->mem_start = ti->sram_base << 12;
789 dev->mem_end = dev->mem_start + (ti->mapped_ram_size << 9) - 1;
790 trdev_init(dev);
791 return 0; /* Return 0 to indicate we have found a Token Ring card. */
792 } /*ibmtr_probe1() */
793
794 /*****************************************************************************/
795
796 /* query the adapter for the size of shared RAM */
797 /* the function returns the RAM size in units of 512 bytes */
798
799 static unsigned char __devinit get_sram_size(struct tok_info *adapt_info)
800 {
801 unsigned char avail_sram_code;
802 static unsigned char size_code[] = { 0, 16, 32, 64, 127, 128 };
803 /* Adapter gives
804 'F' -- use RRR bits 3,2
805 'E' -- 8kb 'D' -- 16kb
806 'C' -- 32kb 'A' -- 64KB
807 'B' - 64KB less 512 bytes at top
808 (WARNING ... must zero top bytes in INIT */
809
810 avail_sram_code = 0xf - readb(adapt_info->mmio + AIPAVAILSHRAM);
811 if (avail_sram_code) return size_code[avail_sram_code];
812 else /* for code 'F', must compute size from RRR(3,2) bits */
813 return 1 <<
814 ((readb(adapt_info->mmio+ACA_OFFSET+ACA_RW+RRR_ODD)>>2&3)+4);
815 }
816
817 /*****************************************************************************/
818
819 static const struct net_device_ops trdev_netdev_ops = {
820 .ndo_open = tok_open,
821 .ndo_stop = tok_close,
822 .ndo_start_xmit = tok_send_packet,
823 .ndo_set_multicast_list = tok_set_multicast_list,
824 .ndo_change_mtu = ibmtr_change_mtu,
825 };
826
827 static int __devinit trdev_init(struct net_device *dev)
828 {
829 struct tok_info *ti = netdev_priv(dev);
830
831 SET_PAGE(ti->srb_page);
832 ti->open_failure = NO ;
833 dev->netdev_ops = &trdev_netdev_ops;
834
835 return 0;
836 }
837
838 /*****************************************************************************/
839
840 static int tok_init_card(struct net_device *dev)
841 {
842 struct tok_info *ti;
843 short PIOaddr;
844 unsigned long i;
845
846 PIOaddr = dev->base_addr;
847 ti = netdev_priv(dev);
848 /* Special processing for first interrupt after reset */
849 ti->do_tok_int = FIRST_INT;
850 /* Reset adapter */
851 writeb(~INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
852 outb(0, PIOaddr + ADAPTRESET);
853
854 schedule_timeout_uninterruptible(TR_RST_TIME); /* wait 50ms */
855
856 outb(0, PIOaddr + ADAPTRESETREL);
857 #ifdef ENABLE_PAGING
858 if (ti->page_mask)
859 writeb(SRPR_ENABLE_PAGING,ti->mmio+ACA_OFFSET+ACA_RW+SRPR_EVEN);
860 #endif
861 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
862 i = sleep_on_timeout(&ti->wait_for_reset, 4 * HZ);
863 return i? 0 : -EAGAIN;
864 }
865
866 /*****************************************************************************/
867 static int tok_open(struct net_device *dev)
868 {
869 struct tok_info *ti = netdev_priv(dev);
870 int i;
871
872 /*the case we were left in a failure state during a previous open */
873 if (ti->open_failure == YES) {
874 DPRINTK("Last time you were disconnected, how about now?\n");
875 printk("You can't insert with an ICS connector half-cocked.\n");
876 }
877
878 ti->open_status = CLOSED; /* CLOSED or OPEN */
879 ti->sap_status = CLOSED; /* CLOSED or OPEN */
880 ti->open_failure = NO; /* NO or YES */
881 ti->open_mode = MANUAL; /* MANUAL or AUTOMATIC */
882
883 ti->sram_phys &= ~1; /* to reverse what we do in tok_close */
884 /* init the spinlock */
885 spin_lock_init(&ti->lock);
886 init_timer(&ti->tr_timer);
887
888 i = tok_init_card(dev);
889 if (i) return i;
890
891 while (1){
892 tok_open_adapter((unsigned long) dev);
893 i= interruptible_sleep_on_timeout(&ti->wait_for_reset, 25 * HZ);
894 /* sig catch: estimate opening adapter takes more than .5 sec*/
895 if (i>(245*HZ)/10) break; /* fancier than if (i==25*HZ) */
896 if (i==0) break;
897 if (ti->open_status == OPEN && ti->sap_status==OPEN) {
898 netif_start_queue(dev);
899 DPRINTK("Adapter is up and running\n");
900 return 0;
901 }
902 i=schedule_timeout_interruptible(TR_RETRY_INTERVAL);
903 /* wait 30 seconds */
904 if(i!=0) break; /*prob. a signal, like the i>24*HZ case above */
905 }
906 outb(0, dev->base_addr + ADAPTRESET);/* kill pending interrupts*/
907 DPRINTK("TERMINATED via signal\n"); /*BMS useful */
908 return -EAGAIN;
909 }
910
911 /*****************************************************************************/
912
913 #define COMMAND_OFST 0
914 #define OPEN_OPTIONS_OFST 8
915 #define NUM_RCV_BUF_OFST 24
916 #define RCV_BUF_LEN_OFST 26
917 #define DHB_LENGTH_OFST 28
918 #define NUM_DHB_OFST 30
919 #define DLC_MAX_SAP_OFST 32
920 #define DLC_MAX_STA_OFST 33
921
922 static void tok_open_adapter(unsigned long dev_addr)
923 {
924 struct net_device *dev = (struct net_device *) dev_addr;
925 struct tok_info *ti;
926 int i;
927
928 ti = netdev_priv(dev);
929 SET_PAGE(ti->init_srb_page);
930 writeb(~SRB_RESP_INT, ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_ODD);
931 for (i = 0; i < sizeof(struct dir_open_adapter); i++)
932 writeb(0, ti->init_srb + i);
933 writeb(DIR_OPEN_ADAPTER, ti->init_srb + COMMAND_OFST);
934 writew(htons(OPEN_PASS_BCON_MAC), ti->init_srb + OPEN_OPTIONS_OFST);
935 if (ti->ring_speed == 16) {
936 writew(htons(ti->dhb_size16mb), ti->init_srb + DHB_LENGTH_OFST);
937 writew(htons(ti->rbuf_cnt16), ti->init_srb + NUM_RCV_BUF_OFST);
938 writew(htons(ti->rbuf_len16), ti->init_srb + RCV_BUF_LEN_OFST);
939 } else {
940 writew(htons(ti->dhb_size4mb), ti->init_srb + DHB_LENGTH_OFST);
941 writew(htons(ti->rbuf_cnt4), ti->init_srb + NUM_RCV_BUF_OFST);
942 writew(htons(ti->rbuf_len4), ti->init_srb + RCV_BUF_LEN_OFST);
943 }
944 writeb(NUM_DHB, /* always 2 */ ti->init_srb + NUM_DHB_OFST);
945 writeb(DLC_MAX_SAP, ti->init_srb + DLC_MAX_SAP_OFST);
946 writeb(DLC_MAX_STA, ti->init_srb + DLC_MAX_STA_OFST);
947 ti->srb = ti->init_srb; /* We use this one in the interrupt handler */
948 ti->srb_page = ti->init_srb_page;
949 DPRINTK("Opening adapter: Xmit bfrs: %d X %d, Rcv bfrs: %d X %d\n",
950 readb(ti->init_srb + NUM_DHB_OFST),
951 ntohs(readw(ti->init_srb + DHB_LENGTH_OFST)),
952 ntohs(readw(ti->init_srb + NUM_RCV_BUF_OFST)),
953 ntohs(readw(ti->init_srb + RCV_BUF_LEN_OFST)));
954 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
955 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
956 }
957
958 /*****************************************************************************/
959
960 static void open_sap(unsigned char type, struct net_device *dev)
961 {
962 int i;
963 struct tok_info *ti = netdev_priv(dev);
964
965 SET_PAGE(ti->srb_page);
966 for (i = 0; i < sizeof(struct dlc_open_sap); i++)
967 writeb(0, ti->srb + i);
968
969 #define MAX_I_FIELD_OFST 14
970 #define SAP_VALUE_OFST 16
971 #define SAP_OPTIONS_OFST 17
972 #define STATION_COUNT_OFST 18
973
974 writeb(DLC_OPEN_SAP, ti->srb + COMMAND_OFST);
975 writew(htons(MAX_I_FIELD), ti->srb + MAX_I_FIELD_OFST);
976 writeb(SAP_OPEN_IND_SAP | SAP_OPEN_PRIORITY, ti->srb+ SAP_OPTIONS_OFST);
977 writeb(SAP_OPEN_STATION_CNT, ti->srb + STATION_COUNT_OFST);
978 writeb(type, ti->srb + SAP_VALUE_OFST);
979 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
980 }
981
982
983 /*****************************************************************************/
984
985 static void tok_set_multicast_list(struct net_device *dev)
986 {
987 struct tok_info *ti = netdev_priv(dev);
988 struct dev_mc_list *mclist;
989 unsigned char address[4];
990
991 int i;
992
993 /*BMS the next line is CRUCIAL or you may be sad when you */
994 /*BMS ifconfig tr down or hot unplug a PCMCIA card ??hownowbrowncow*/
995 if (/*BMSHELPdev->start == 0 ||*/ ti->open_status != OPEN) return;
996 address[0] = address[1] = address[2] = address[3] = 0;
997 mclist = dev->mc_list;
998 for (i = 0; i < dev->mc_count; i++) {
999 address[0] |= mclist->dmi_addr[2];
1000 address[1] |= mclist->dmi_addr[3];
1001 address[2] |= mclist->dmi_addr[4];
1002 address[3] |= mclist->dmi_addr[5];
1003 mclist = mclist->next;
1004 }
1005 SET_PAGE(ti->srb_page);
1006 for (i = 0; i < sizeof(struct srb_set_funct_addr); i++)
1007 writeb(0, ti->srb + i);
1008
1009 #define FUNCT_ADDRESS_OFST 6
1010
1011 writeb(DIR_SET_FUNC_ADDR, ti->srb + COMMAND_OFST);
1012 for (i = 0; i < 4; i++)
1013 writeb(address[i], ti->srb + FUNCT_ADDRESS_OFST + i);
1014 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1015 #if TR_VERBOSE
1016 DPRINTK("Setting functional address: ");
1017 for (i=0;i<4;i++) printk("%02X ", address[i]);
1018 printk("\n");
1019 #endif
1020 }
1021
1022 /*****************************************************************************/
1023
1024 #define STATION_ID_OFST 4
1025
1026 static netdev_tx_t tok_send_packet(struct sk_buff *skb,
1027 struct net_device *dev)
1028 {
1029 struct tok_info *ti;
1030 unsigned long flags;
1031 ti = netdev_priv(dev);
1032
1033 netif_stop_queue(dev);
1034
1035 /* lock against other CPUs */
1036 spin_lock_irqsave(&(ti->lock), flags);
1037
1038 /* Save skb; we'll need it when the adapter asks for the data */
1039 ti->current_skb = skb;
1040 SET_PAGE(ti->srb_page);
1041 writeb(XMIT_UI_FRAME, ti->srb + COMMAND_OFST);
1042 writew(ti->exsap_station_id, ti->srb + STATION_ID_OFST);
1043 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1044 spin_unlock_irqrestore(&(ti->lock), flags);
1045 dev->trans_start = jiffies;
1046 return NETDEV_TX_OK;
1047 }
1048
1049 /*****************************************************************************/
1050
1051 static int tok_close(struct net_device *dev)
1052 {
1053 struct tok_info *ti = netdev_priv(dev);
1054
1055 /* Important for PCMCIA hot unplug, otherwise, we'll pull the card, */
1056 /* unloading the module from memory, and then if a timer pops, ouch */
1057 del_timer_sync(&ti->tr_timer);
1058 outb(0, dev->base_addr + ADAPTRESET);
1059 ti->sram_phys |= 1;
1060 ti->open_status = CLOSED;
1061
1062 netif_stop_queue(dev);
1063 DPRINTK("Adapter is closed.\n");
1064 return 0;
1065 }
1066
1067 /*****************************************************************************/
1068
1069 #define RETCODE_OFST 2
1070 #define OPEN_ERROR_CODE_OFST 6
1071 #define ASB_ADDRESS_OFST 8
1072 #define SRB_ADDRESS_OFST 10
1073 #define ARB_ADDRESS_OFST 12
1074 #define SSB_ADDRESS_OFST 14
1075
1076 static char *printphase[]= {"Lobe media test","Physical insertion",
1077 "Address verification","Roll call poll","Request Parameters"};
1078 static char *printerror[]={"Function failure","Signal loss","Reserved",
1079 "Frequency error","Timeout","Ring failure","Ring beaconing",
1080 "Duplicate node address",
1081 "Parameter request-retry count exceeded","Remove received",
1082 "IMPL force received","Duplicate modifier",
1083 "No monitor detected","Monitor contention failed for RPL"};
1084
1085 static void __iomem *map_address(struct tok_info *ti, unsigned index, __u8 *page)
1086 {
1087 if (ti->page_mask) {
1088 *page = (index >> 8) & ti->page_mask;
1089 index &= ~(ti->page_mask << 8);
1090 }
1091 return ti->sram_virt + index;
1092 }
1093
1094 static void dir_open_adapter (struct net_device *dev)
1095 {
1096 struct tok_info *ti = netdev_priv(dev);
1097 unsigned char ret_code;
1098 __u16 err;
1099
1100 ti->srb = map_address(ti,
1101 ntohs(readw(ti->init_srb + SRB_ADDRESS_OFST)),
1102 &ti->srb_page);
1103 ti->ssb = map_address(ti,
1104 ntohs(readw(ti->init_srb + SSB_ADDRESS_OFST)),
1105 &ti->ssb_page);
1106 ti->arb = map_address(ti,
1107 ntohs(readw(ti->init_srb + ARB_ADDRESS_OFST)),
1108 &ti->arb_page);
1109 ti->asb = map_address(ti,
1110 ntohs(readw(ti->init_srb + ASB_ADDRESS_OFST)),
1111 &ti->asb_page);
1112 ti->current_skb = NULL;
1113 ret_code = readb(ti->init_srb + RETCODE_OFST);
1114 err = ntohs(readw(ti->init_srb + OPEN_ERROR_CODE_OFST));
1115 if (!ret_code) {
1116 ti->open_status = OPEN; /* TR adapter is now available */
1117 if (ti->open_mode == AUTOMATIC) {
1118 DPRINTK("Adapter reopened.\n");
1119 }
1120 writeb(~SRB_RESP_INT, ti->mmio+ACA_OFFSET+ACA_RESET+ISRP_ODD);
1121 open_sap(EXTENDED_SAP, dev);
1122 return;
1123 }
1124 ti->open_failure = YES;
1125 if (ret_code == 7){
1126 if (err == 0x24) {
1127 if (!ti->auto_speedsave) {
1128 DPRINTK("Open failed: Adapter speed must match "
1129 "ring speed if Automatic Ring Speed Save is "
1130 "disabled.\n");
1131 ti->open_action = FAIL;
1132 }else
1133 DPRINTK("Retrying open to adjust to "
1134 "ring speed, ");
1135 } else if (err == 0x2d) {
1136 DPRINTK("Physical Insertion: No Monitor Detected, ");
1137 printk("retrying after %ds delay...\n",
1138 TR_RETRY_INTERVAL/HZ);
1139 } else if (err == 0x11) {
1140 DPRINTK("Lobe Media Function Failure (0x11), ");
1141 printk(" retrying after %ds delay...\n",
1142 TR_RETRY_INTERVAL/HZ);
1143 } else {
1144 char **prphase = printphase;
1145 char **prerror = printerror;
1146 int pnr = err / 16 - 1;
1147 int enr = err % 16 - 1;
1148 DPRINTK("TR Adapter misc open failure, error code = ");
1149 if (pnr < 0 || pnr >= ARRAY_SIZE(printphase) ||
1150 enr < 0 ||
1151 enr >= ARRAY_SIZE(printerror))
1152 printk("0x%x, invalid Phase/Error.", err);
1153 else
1154 printk("0x%x, Phase: %s, Error: %s\n", err,
1155 prphase[pnr], prerror[enr]);
1156 printk(" retrying after %ds delay...\n",
1157 TR_RETRY_INTERVAL/HZ);
1158 }
1159 } else DPRINTK("open failed: ret_code = %02X..., ", ret_code);
1160 if (ti->open_action != FAIL) {
1161 if (ti->open_mode==AUTOMATIC){
1162 ti->open_action = REOPEN;
1163 ibmtr_reset_timer(&(ti->tr_timer), dev);
1164 return;
1165 }
1166 wake_up(&ti->wait_for_reset);
1167 return;
1168 }
1169 DPRINTK("FAILURE, CAPUT\n");
1170 }
1171
1172 /******************************************************************************/
1173
1174 static irqreturn_t tok_interrupt(int irq, void *dev_id)
1175 {
1176 unsigned char status;
1177 /* unsigned char status_even ; */
1178 struct tok_info *ti;
1179 struct net_device *dev;
1180 #ifdef ENABLE_PAGING
1181 unsigned char save_srpr;
1182 #endif
1183
1184 dev = dev_id;
1185 #if TR_VERBOSE
1186 DPRINTK("Int from tok_driver, dev : %p irq%d\n", dev,irq);
1187 #endif
1188 ti = netdev_priv(dev);
1189 if (ti->sram_phys & 1)
1190 return IRQ_NONE; /* PCMCIA card extraction flag */
1191 spin_lock(&(ti->lock));
1192 #ifdef ENABLE_PAGING
1193 save_srpr = readb(ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1194 #endif
1195
1196 /* Disable interrupts till processing is finished */
1197 writeb((~INT_ENABLE), ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
1198
1199 /* Reset interrupt for ISA boards */
1200 if (ti->adapter_int_enable)
1201 outb(0, ti->adapter_int_enable);
1202 else /* used for PCMCIA cards */
1203 outb(0, ti->global_int_enable);
1204 if (ti->do_tok_int == FIRST_INT){
1205 initial_tok_int(dev);
1206 #ifdef ENABLE_PAGING
1207 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1208 #endif
1209 spin_unlock(&(ti->lock));
1210 return IRQ_HANDLED;
1211 }
1212 /* Begin interrupt handler HERE inline to avoid the extra
1213 levels of logic and call depth for the original solution. */
1214 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_ODD);
1215 /*BMSstatus_even = readb (ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN) */
1216 /*BMSdebugprintk("tok_interrupt: ISRP_ODD = 0x%x ISRP_EVEN = 0x%x\n", */
1217 /*BMS status,status_even); */
1218
1219 if (status & ADAP_CHK_INT) {
1220 int i;
1221 void __iomem *check_reason;
1222 __u8 check_reason_page = 0;
1223 check_reason = map_address(ti,
1224 ntohs(readw(ti->mmio+ ACA_OFFSET+ACA_RW + WWCR_EVEN)),
1225 &check_reason_page);
1226 SET_PAGE(check_reason_page);
1227
1228 DPRINTK("Adapter check interrupt\n");
1229 DPRINTK("8 reason bytes follow: ");
1230 for (i = 0; i < 8; i++, check_reason++)
1231 printk("%02X ", (int) readb(check_reason));
1232 printk("\n");
1233 writeb(~ADAP_CHK_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1234 status = readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRA_EVEN);
1235 DPRINTK("ISRA_EVEN == 0x02%x\n",status);
1236 ti->open_status = CLOSED;
1237 ti->sap_status = CLOSED;
1238 ti->open_mode = AUTOMATIC;
1239 netif_carrier_off(dev);
1240 netif_stop_queue(dev);
1241 ti->open_action = RESTART;
1242 outb(0, dev->base_addr + ADAPTRESET);
1243 ibmtr_reset_timer(&(ti->tr_timer), dev);/*BMS try to reopen*/
1244 spin_unlock(&(ti->lock));
1245 return IRQ_HANDLED;
1246 }
1247 if (readb(ti->mmio + ACA_OFFSET + ACA_RW + ISRP_EVEN)
1248 & (TCR_INT | ERR_INT | ACCESS_INT)) {
1249 DPRINTK("adapter error: ISRP_EVEN : %02x\n",
1250 (int)readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRP_EVEN));
1251 writeb(~(TCR_INT | ERR_INT | ACCESS_INT),
1252 ti->mmio + ACA_OFFSET + ACA_RESET + ISRP_EVEN);
1253 status= readb(ti->mmio+ ACA_OFFSET + ACA_RW + ISRA_EVEN);/*BMS*/
1254 DPRINTK("ISRA_EVEN == 0x02%x\n",status);/*BMS*/
1255 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1256 #ifdef ENABLE_PAGING
1257 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1258 #endif
1259 spin_unlock(&(ti->lock));
1260 return IRQ_HANDLED;
1261 }
1262 if (status & SRB_RESP_INT) { /* SRB response */
1263 SET_PAGE(ti->srb_page);
1264 #if TR_VERBOSE
1265 DPRINTK("SRB resp: cmd=%02X rsp=%02X\n",
1266 readb(ti->srb), readb(ti->srb + RETCODE_OFST));
1267 #endif
1268 switch (readb(ti->srb)) { /* SRB command check */
1269 case XMIT_DIR_FRAME:{
1270 unsigned char xmit_ret_code;
1271 xmit_ret_code = readb(ti->srb + RETCODE_OFST);
1272 if (xmit_ret_code == 0xff) break;
1273 DPRINTK("error on xmit_dir_frame request: %02X\n",
1274 xmit_ret_code);
1275 if (ti->current_skb) {
1276 dev_kfree_skb_irq(ti->current_skb);
1277 ti->current_skb = NULL;
1278 }
1279 /*dev->tbusy = 0;*/
1280 netif_wake_queue(dev);
1281 if (ti->readlog_pending)
1282 ibmtr_readlog(dev);
1283 break;
1284 }
1285 case XMIT_UI_FRAME:{
1286 unsigned char xmit_ret_code;
1287
1288 xmit_ret_code = readb(ti->srb + RETCODE_OFST);
1289 if (xmit_ret_code == 0xff) break;
1290 DPRINTK("error on xmit_ui_frame request: %02X\n",
1291 xmit_ret_code);
1292 if (ti->current_skb) {
1293 dev_kfree_skb_irq(ti->current_skb);
1294 ti->current_skb = NULL;
1295 }
1296 netif_wake_queue(dev);
1297 if (ti->readlog_pending)
1298 ibmtr_readlog(dev);
1299 break;
1300 }
1301 case DIR_OPEN_ADAPTER:
1302 dir_open_adapter(dev);
1303 break;
1304 case DLC_OPEN_SAP:
1305 if (readb(ti->srb + RETCODE_OFST)) {
1306 DPRINTK("open_sap failed: ret_code = %02X, "
1307 "retrying\n",
1308 (int) readb(ti->srb + RETCODE_OFST));
1309 ti->open_action = REOPEN;
1310 ibmtr_reset_timer(&(ti->tr_timer), dev);
1311 break;
1312 }
1313 ti->exsap_station_id = readw(ti->srb + STATION_ID_OFST);
1314 ti->sap_status = OPEN;/* TR adapter is now available */
1315 if (ti->open_mode==MANUAL){
1316 wake_up(&ti->wait_for_reset);
1317 break;
1318 }
1319 netif_wake_queue(dev);
1320 netif_carrier_on(dev);
1321 break;
1322 case DIR_INTERRUPT:
1323 case DIR_MOD_OPEN_PARAMS:
1324 case DIR_SET_GRP_ADDR:
1325 case DIR_SET_FUNC_ADDR:
1326 case DLC_CLOSE_SAP:
1327 if (readb(ti->srb + RETCODE_OFST))
1328 DPRINTK("error on %02X: %02X\n",
1329 (int) readb(ti->srb + COMMAND_OFST),
1330 (int) readb(ti->srb + RETCODE_OFST));
1331 break;
1332 case DIR_READ_LOG:
1333 if (readb(ti->srb + RETCODE_OFST)){
1334 DPRINTK("error on dir_read_log: %02X\n",
1335 (int) readb(ti->srb + RETCODE_OFST));
1336 netif_wake_queue(dev);
1337 break;
1338 }
1339 #if IBMTR_DEBUG_MESSAGES
1340
1341 #define LINE_ERRORS_OFST 0
1342 #define INTERNAL_ERRORS_OFST 1
1343 #define BURST_ERRORS_OFST 2
1344 #define AC_ERRORS_OFST 3
1345 #define ABORT_DELIMITERS_OFST 4
1346 #define LOST_FRAMES_OFST 6
1347 #define RECV_CONGEST_COUNT_OFST 7
1348 #define FRAME_COPIED_ERRORS_OFST 8
1349 #define FREQUENCY_ERRORS_OFST 9
1350 #define TOKEN_ERRORS_OFST 10
1351
1352 DPRINTK("Line errors %02X, Internal errors %02X, "
1353 "Burst errors %02X\n" "A/C errors %02X, "
1354 "Abort delimiters %02X, Lost frames %02X\n"
1355 "Receive congestion count %02X, "
1356 "Frame copied errors %02X\nFrequency errors %02X, "
1357 "Token errors %02X\n",
1358 (int) readb(ti->srb + LINE_ERRORS_OFST),
1359 (int) readb(ti->srb + INTERNAL_ERRORS_OFST),
1360 (int) readb(ti->srb + BURST_ERRORS_OFST),
1361 (int) readb(ti->srb + AC_ERRORS_OFST),
1362 (int) readb(ti->srb + ABORT_DELIMITERS_OFST),
1363 (int) readb(ti->srb + LOST_FRAMES_OFST),
1364 (int) readb(ti->srb + RECV_CONGEST_COUNT_OFST),
1365 (int) readb(ti->srb + FRAME_COPIED_ERRORS_OFST),
1366 (int) readb(ti->srb + FREQUENCY_ERRORS_OFST),
1367 (int) readb(ti->srb + TOKEN_ERRORS_OFST));
1368 #endif
1369 netif_wake_queue(dev);
1370 break;
1371 default:
1372 DPRINTK("Unknown command %02X encountered\n",
1373 (int) readb(ti->srb));
1374 } /* end switch SRB command check */
1375 writeb(~SRB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1376 } /* if SRB response */
1377 if (status & ASB_FREE_INT) { /* ASB response */
1378 SET_PAGE(ti->asb_page);
1379 #if TR_VERBOSE
1380 DPRINTK("ASB resp: cmd=%02X\n", readb(ti->asb));
1381 #endif
1382
1383 switch (readb(ti->asb)) { /* ASB command check */
1384 case REC_DATA:
1385 case XMIT_UI_FRAME:
1386 case XMIT_DIR_FRAME:
1387 break;
1388 default:
1389 DPRINTK("unknown command in asb %02X\n",
1390 (int) readb(ti->asb));
1391 } /* switch ASB command check */
1392 if (readb(ti->asb + 2) != 0xff) /* checks ret_code */
1393 DPRINTK("ASB error %02X in cmd %02X\n",
1394 (int) readb(ti->asb + 2), (int) readb(ti->asb));
1395 writeb(~ASB_FREE_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1396 } /* if ASB response */
1397
1398 #define STATUS_OFST 6
1399 #define NETW_STATUS_OFST 6
1400
1401 if (status & ARB_CMD_INT) { /* ARB response */
1402 SET_PAGE(ti->arb_page);
1403 #if TR_VERBOSE
1404 DPRINTK("ARB resp: cmd=%02X\n", readb(ti->arb));
1405 #endif
1406
1407 switch (readb(ti->arb)) { /* ARB command check */
1408 case DLC_STATUS:
1409 DPRINTK("DLC_STATUS new status: %02X on station %02X\n",
1410 ntohs(readw(ti->arb + STATUS_OFST)),
1411 ntohs(readw(ti->arb+ STATION_ID_OFST)));
1412 break;
1413 case REC_DATA:
1414 tr_rx(dev);
1415 break;
1416 case RING_STAT_CHANGE:{
1417 unsigned short ring_status;
1418 ring_status= ntohs(readw(ti->arb + NETW_STATUS_OFST));
1419 if (ibmtr_debug_trace & TRC_INIT)
1420 DPRINTK("Ring Status Change...(0x%x)\n",
1421 ring_status);
1422 if(ring_status& (REMOVE_RECV|AUTO_REMOVAL|LOBE_FAULT)){
1423 netif_stop_queue(dev);
1424 netif_carrier_off(dev);
1425 DPRINTK("Remove received, or Auto-removal error"
1426 ", or Lobe fault\n");
1427 DPRINTK("We'll try to reopen the closed adapter"
1428 " after a %d second delay.\n",
1429 TR_RETRY_INTERVAL/HZ);
1430 /*I was confused: I saw the TR reopening but */
1431 /*forgot:with an RJ45 in an RJ45/ICS adapter */
1432 /*but adapter not in the ring, the TR will */
1433 /* open, and then soon close and come here. */
1434 ti->open_mode = AUTOMATIC;
1435 ti->open_status = CLOSED; /*12/2000 BMS*/
1436 ti->open_action = REOPEN;
1437 ibmtr_reset_timer(&(ti->tr_timer), dev);
1438 } else if (ring_status & LOG_OVERFLOW) {
1439 if(netif_queue_stopped(dev))
1440 ti->readlog_pending = 1;
1441 else
1442 ibmtr_readlog(dev);
1443 }
1444 break;
1445 }
1446 case XMIT_DATA_REQ:
1447 tr_tx(dev);
1448 break;
1449 default:
1450 DPRINTK("Unknown command %02X in arb\n",
1451 (int) readb(ti->arb));
1452 break;
1453 } /* switch ARB command check */
1454 writeb(~ARB_CMD_INT, ti->mmio+ ACA_OFFSET+ACA_RESET + ISRP_ODD);
1455 writeb(ARB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1456 } /* if ARB response */
1457 if (status & SSB_RESP_INT) { /* SSB response */
1458 unsigned char retcode;
1459 SET_PAGE(ti->ssb_page);
1460 #if TR_VERBOSE
1461 DPRINTK("SSB resp: cmd=%02X rsp=%02X\n",
1462 readb(ti->ssb), readb(ti->ssb + 2));
1463 #endif
1464
1465 switch (readb(ti->ssb)) { /* SSB command check */
1466 case XMIT_DIR_FRAME:
1467 case XMIT_UI_FRAME:
1468 retcode = readb(ti->ssb + 2);
1469 if (retcode && (retcode != 0x22))/* checks ret_code */
1470 DPRINTK("xmit ret_code: %02X xmit error code: "
1471 "%02X\n",
1472 (int)retcode, (int)readb(ti->ssb + 6));
1473 else
1474 dev->stats.tx_packets++;
1475 break;
1476 case XMIT_XID_CMD:
1477 DPRINTK("xmit xid ret_code: %02X\n",
1478 (int) readb(ti->ssb + 2));
1479 default:
1480 DPRINTK("Unknown command %02X in ssb\n",
1481 (int) readb(ti->ssb));
1482 } /* SSB command check */
1483 writeb(~SSB_RESP_INT, ti->mmio+ ACA_OFFSET+ACA_RESET+ ISRP_ODD);
1484 writeb(SSB_FREE, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1485 } /* if SSB response */
1486 #ifdef ENABLE_PAGING
1487 writeb(save_srpr, ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1488 #endif
1489 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1490 spin_unlock(&(ti->lock));
1491 return IRQ_HANDLED;
1492 } /*tok_interrupt */
1493
1494 /*****************************************************************************/
1495
1496 #define INIT_STATUS_OFST 1
1497 #define INIT_STATUS_2_OFST 2
1498 #define ENCODED_ADDRESS_OFST 8
1499
1500 static void initial_tok_int(struct net_device *dev)
1501 {
1502
1503 __u32 encoded_addr, hw_encoded_addr;
1504 struct tok_info *ti;
1505 unsigned char init_status; /*BMS 12/2000*/
1506
1507 ti = netdev_priv(dev);
1508
1509 ti->do_tok_int = NOT_FIRST;
1510
1511 /* we assign the shared-ram address for ISA devices */
1512 writeb(ti->sram_base, ti->mmio + ACA_OFFSET + ACA_RW + RRR_EVEN);
1513 #ifndef PCMCIA
1514 ti->sram_virt = ioremap(((__u32)ti->sram_base << 12), ti->avail_shared_ram);
1515 #endif
1516 ti->init_srb = map_address(ti,
1517 ntohs(readw(ti->mmio + ACA_OFFSET + WRBR_EVEN)),
1518 &ti->init_srb_page);
1519 if (ti->page_mask && ti->avail_shared_ram == 127) {
1520 void __iomem *last_512;
1521 __u8 last_512_page=0;
1522 int i;
1523 last_512 = map_address(ti, 0xfe00, &last_512_page);
1524 /* initialize high section of ram (if necessary) */
1525 SET_PAGE(last_512_page);
1526 for (i = 0; i < 512; i++)
1527 writeb(0, last_512 + i);
1528 }
1529 SET_PAGE(ti->init_srb_page);
1530
1531 #if TR_VERBOSE
1532 {
1533 int i;
1534
1535 DPRINTK("ti->init_srb_page=0x%x\n", ti->init_srb_page);
1536 DPRINTK("init_srb(%p):", ti->init_srb );
1537 for (i = 0; i < 20; i++)
1538 printk("%02X ", (int) readb(ti->init_srb + i));
1539 printk("\n");
1540 }
1541 #endif
1542
1543 hw_encoded_addr = readw(ti->init_srb + ENCODED_ADDRESS_OFST);
1544 encoded_addr = ntohs(hw_encoded_addr);
1545 init_status= /*BMS 12/2000 check for shallow mode possibility (Turbo)*/
1546 readb(ti->init_srb+offsetof(struct srb_init_response,init_status));
1547 /*printk("Initial interrupt: init_status= 0x%02x\n",init_status);*/
1548 ti->ring_speed = init_status & 0x01 ? 16 : 4;
1549 DPRINTK("Initial interrupt : %d Mbps, shared RAM base %08x.\n",
1550 ti->ring_speed, (unsigned int)dev->mem_start);
1551 ti->auto_speedsave = (readb(ti->init_srb+INIT_STATUS_2_OFST) & 4) != 0;
1552
1553 if (ti->open_mode == MANUAL) wake_up(&ti->wait_for_reset);
1554 else tok_open_adapter((unsigned long)dev);
1555
1556 } /*initial_tok_int() */
1557
1558 /*****************************************************************************/
1559
1560 #define CMD_CORRELATE_OFST 1
1561 #define DHB_ADDRESS_OFST 6
1562
1563 #define FRAME_LENGTH_OFST 6
1564 #define HEADER_LENGTH_OFST 8
1565 #define RSAP_VALUE_OFST 9
1566
1567 static void tr_tx(struct net_device *dev)
1568 {
1569 struct tok_info *ti = netdev_priv(dev);
1570 struct trh_hdr *trhdr = (struct trh_hdr *) ti->current_skb->data;
1571 unsigned int hdr_len;
1572 __u32 dhb=0,dhb_base;
1573 void __iomem *dhbuf = NULL;
1574 unsigned char xmit_command;
1575 int i,dhb_len=0x4000,src_len,src_offset;
1576 struct trllc *llc;
1577 struct srb_xmit xsrb;
1578 __u8 dhb_page = 0;
1579 __u8 llc_ssap;
1580
1581 SET_PAGE(ti->asb_page);
1582
1583 if (readb(ti->asb+RETCODE_OFST) != 0xFF) DPRINTK("ASB not free !!!\n");
1584
1585 /* in providing the transmit interrupts, is telling us it is ready for
1586 data and providing a shared memory address for us to stuff with data.
1587 Here we compute the effective address where we will place data.
1588 */
1589 SET_PAGE(ti->arb_page);
1590 dhb=dhb_base=ntohs(readw(ti->arb + DHB_ADDRESS_OFST));
1591 if (ti->page_mask) {
1592 dhb_page = (dhb_base >> 8) & ti->page_mask;
1593 dhb=dhb_base & ~(ti->page_mask << 8);
1594 }
1595 dhbuf = ti->sram_virt + dhb;
1596
1597 /* Figure out the size of the 802.5 header */
1598 if (!(trhdr->saddr[0] & 0x80)) /* RIF present? */
1599 hdr_len = sizeof(struct trh_hdr) - TR_MAXRIFLEN;
1600 else
1601 hdr_len = ((ntohs(trhdr->rcf) & TR_RCF_LEN_MASK) >> 8)
1602 + sizeof(struct trh_hdr) - TR_MAXRIFLEN;
1603
1604 llc = (struct trllc *) (ti->current_skb->data + hdr_len);
1605
1606 llc_ssap = llc->ssap;
1607 SET_PAGE(ti->srb_page);
1608 memcpy_fromio(&xsrb, ti->srb, sizeof(xsrb));
1609 SET_PAGE(ti->asb_page);
1610 xmit_command = xsrb.command;
1611
1612 writeb(xmit_command, ti->asb + COMMAND_OFST);
1613 writew(xsrb.station_id, ti->asb + STATION_ID_OFST);
1614 writeb(llc_ssap, ti->asb + RSAP_VALUE_OFST);
1615 writeb(xsrb.cmd_corr, ti->asb + CMD_CORRELATE_OFST);
1616 writeb(0, ti->asb + RETCODE_OFST);
1617 if ((xmit_command == XMIT_XID_CMD) || (xmit_command == XMIT_TEST_CMD)) {
1618 writew(htons(0x11), ti->asb + FRAME_LENGTH_OFST);
1619 writeb(0x0e, ti->asb + HEADER_LENGTH_OFST);
1620 SET_PAGE(dhb_page);
1621 writeb(AC, dhbuf);
1622 writeb(LLC_FRAME, dhbuf + 1);
1623 for (i = 0; i < TR_ALEN; i++)
1624 writeb((int) 0x0FF, dhbuf + i + 2);
1625 for (i = 0; i < TR_ALEN; i++)
1626 writeb(0, dhbuf + i + TR_ALEN + 2);
1627 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1628 return;
1629 }
1630 /*
1631 * the token ring packet is copied from sk_buff to the adapter
1632 * buffer identified in the command data received with the interrupt.
1633 */
1634 writeb(hdr_len, ti->asb + HEADER_LENGTH_OFST);
1635 writew(htons(ti->current_skb->len), ti->asb + FRAME_LENGTH_OFST);
1636 src_len=ti->current_skb->len;
1637 src_offset=0;
1638 dhb=dhb_base;
1639 while(1) {
1640 if (ti->page_mask) {
1641 dhb_page=(dhb >> 8) & ti->page_mask;
1642 dhb=dhb & ~(ti->page_mask << 8);
1643 dhb_len=0x4000-dhb; /* remaining size of this page */
1644 }
1645 dhbuf = ti->sram_virt + dhb;
1646 SET_PAGE(dhb_page);
1647 if (src_len > dhb_len) {
1648 memcpy_toio(dhbuf,&ti->current_skb->data[src_offset],
1649 dhb_len);
1650 src_len -= dhb_len;
1651 src_offset += dhb_len;
1652 dhb_base+=dhb_len;
1653 dhb=dhb_base;
1654 continue;
1655 }
1656 memcpy_toio(dhbuf, &ti->current_skb->data[src_offset], src_len);
1657 break;
1658 }
1659 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1660 dev->stats.tx_bytes += ti->current_skb->len;
1661 dev_kfree_skb_irq(ti->current_skb);
1662 ti->current_skb = NULL;
1663 netif_wake_queue(dev);
1664 if (ti->readlog_pending)
1665 ibmtr_readlog(dev);
1666 } /*tr_tx */
1667
1668 /*****************************************************************************/
1669
1670
1671 #define RECEIVE_BUFFER_OFST 6
1672 #define LAN_HDR_LENGTH_OFST 8
1673 #define DLC_HDR_LENGTH_OFST 9
1674
1675 #define DSAP_OFST 0
1676 #define SSAP_OFST 1
1677 #define LLC_OFST 2
1678 #define PROTID_OFST 3
1679 #define ETHERTYPE_OFST 6
1680
1681 static void tr_rx(struct net_device *dev)
1682 {
1683 struct tok_info *ti = netdev_priv(dev);
1684 __u32 rbuffer;
1685 void __iomem *rbuf, *rbufdata, *llc;
1686 __u8 rbuffer_page = 0;
1687 unsigned char *data;
1688 unsigned int rbuffer_len, lan_hdr_len, hdr_len, ip_len, length;
1689 unsigned char dlc_hdr_len;
1690 struct sk_buff *skb;
1691 unsigned int skb_size = 0;
1692 int IPv4_p = 0;
1693 unsigned int chksum = 0;
1694 struct iphdr *iph;
1695 struct arb_rec_req rarb;
1696
1697 SET_PAGE(ti->arb_page);
1698 memcpy_fromio(&rarb, ti->arb, sizeof(rarb));
1699 rbuffer = ntohs(rarb.rec_buf_addr) ;
1700 rbuf = map_address(ti, rbuffer, &rbuffer_page);
1701
1702 SET_PAGE(ti->asb_page);
1703
1704 if (readb(ti->asb + RETCODE_OFST) !=0xFF) DPRINTK("ASB not free !!!\n");
1705
1706 writeb(REC_DATA, ti->asb + COMMAND_OFST);
1707 writew(rarb.station_id, ti->asb + STATION_ID_OFST);
1708 writew(rarb.rec_buf_addr, ti->asb + RECEIVE_BUFFER_OFST);
1709
1710 lan_hdr_len = rarb.lan_hdr_len;
1711 if (lan_hdr_len > sizeof(struct trh_hdr)) {
1712 DPRINTK("Linux cannot handle greater than 18 bytes RIF\n");
1713 return;
1714 } /*BMS I added this above just to be very safe */
1715 dlc_hdr_len = readb(ti->arb + DLC_HDR_LENGTH_OFST);
1716 hdr_len = lan_hdr_len + sizeof(struct trllc) + sizeof(struct iphdr);
1717
1718 SET_PAGE(rbuffer_page);
1719 llc = rbuf + offsetof(struct rec_buf, data) + lan_hdr_len;
1720
1721 #if TR_VERBOSE
1722 DPRINTK("offsetof data: %02X lan_hdr_len: %02X\n",
1723 (__u32) offsetof(struct rec_buf, data), (unsigned int) lan_hdr_len);
1724 DPRINTK("llc: %08X rec_buf_addr: %04X dev->mem_start: %lX\n",
1725 llc, ntohs(rarb.rec_buf_addr), dev->mem_start);
1726 DPRINTK("dsap: %02X, ssap: %02X, llc: %02X, protid: %02X%02X%02X, "
1727 "ethertype: %04X\n",
1728 (int) readb(llc + DSAP_OFST), (int) readb(llc + SSAP_OFST),
1729 (int) readb(llc + LLC_OFST), (int) readb(llc + PROTID_OFST),
1730 (int) readb(llc+PROTID_OFST+1),(int)readb(llc+PROTID_OFST + 2),
1731 (int) ntohs(readw(llc + ETHERTYPE_OFST)));
1732 #endif
1733 if (readb(llc + offsetof(struct trllc, llc)) != UI_CMD) {
1734 SET_PAGE(ti->asb_page);
1735 writeb(DATA_LOST, ti->asb + RETCODE_OFST);
1736 dev->stats.rx_dropped++;
1737 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1738 return;
1739 }
1740 length = ntohs(rarb.frame_len);
1741 if (readb(llc + DSAP_OFST) == EXTENDED_SAP &&
1742 readb(llc + SSAP_OFST) == EXTENDED_SAP &&
1743 length >= hdr_len) IPv4_p = 1;
1744 #if TR_VERBOSE
1745 #define SADDR_OFST 8
1746 #define DADDR_OFST 2
1747
1748 if (!IPv4_p) {
1749
1750 void __iomem *trhhdr = rbuf + offsetof(struct rec_buf, data);
1751 u8 saddr[6];
1752 u8 daddr[6];
1753 int i;
1754 for (i = 0 ; i < 6 ; i++)
1755 saddr[i] = readb(trhhdr + SADDR_OFST + i);
1756 for (i = 0 ; i < 6 ; i++)
1757 daddr[i] = readb(trhhdr + DADDR_OFST + i);
1758 DPRINTK("Probably non-IP frame received.\n");
1759 DPRINTK("ssap: %02X dsap: %02X "
1760 "saddr: %pM daddr: %pM\n",
1761 readb(llc + SSAP_OFST), readb(llc + DSAP_OFST),
1762 saddr, daddr);
1763 }
1764 #endif
1765
1766 /*BMS handle the case she comes in with few hops but leaves with many */
1767 skb_size=length-lan_hdr_len+sizeof(struct trh_hdr)+sizeof(struct trllc);
1768
1769 if (!(skb = dev_alloc_skb(skb_size))) {
1770 DPRINTK("out of memory. frame dropped.\n");
1771 dev->stats.rx_dropped++;
1772 SET_PAGE(ti->asb_page);
1773 writeb(DATA_LOST, ti->asb + offsetof(struct asb_rec, ret_code));
1774 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1775 return;
1776 }
1777 /*BMS again, if she comes in with few but leaves with many */
1778 skb_reserve(skb, sizeof(struct trh_hdr) - lan_hdr_len);
1779 skb_put(skb, length);
1780 data = skb->data;
1781 rbuffer_len = ntohs(readw(rbuf + offsetof(struct rec_buf, buf_len)));
1782 rbufdata = rbuf + offsetof(struct rec_buf, data);
1783
1784 if (IPv4_p) {
1785 /* Copy the headers without checksumming */
1786 memcpy_fromio(data, rbufdata, hdr_len);
1787
1788 /* Watch for padded packets and bogons */
1789 iph= (struct iphdr *)(data+ lan_hdr_len + sizeof(struct trllc));
1790 ip_len = ntohs(iph->tot_len) - sizeof(struct iphdr);
1791 length -= hdr_len;
1792 if ((ip_len <= length) && (ip_len > 7))
1793 length = ip_len;
1794 data += hdr_len;
1795 rbuffer_len -= hdr_len;
1796 rbufdata += hdr_len;
1797 }
1798 /* Copy the payload... */
1799 #define BUFFER_POINTER_OFST 2
1800 #define BUFFER_LENGTH_OFST 6
1801 for (;;) {
1802 if (ibmtr_debug_trace&TRC_INITV && length < rbuffer_len)
1803 DPRINTK("CURIOUS, length=%d < rbuffer_len=%d\n",
1804 length,rbuffer_len);
1805 if (IPv4_p)
1806 chksum=csum_partial_copy_nocheck((void*)rbufdata,
1807 data,length<rbuffer_len?length:rbuffer_len,chksum);
1808 else
1809 memcpy_fromio(data, rbufdata, rbuffer_len);
1810 rbuffer = ntohs(readw(rbuf+BUFFER_POINTER_OFST)) ;
1811 if (!rbuffer)
1812 break;
1813 rbuffer -= 2;
1814 length -= rbuffer_len;
1815 data += rbuffer_len;
1816 rbuf = map_address(ti, rbuffer, &rbuffer_page);
1817 SET_PAGE(rbuffer_page);
1818 rbuffer_len = ntohs(readw(rbuf + BUFFER_LENGTH_OFST));
1819 rbufdata = rbuf + offsetof(struct rec_buf, data);
1820 }
1821
1822 SET_PAGE(ti->asb_page);
1823 writeb(0, ti->asb + offsetof(struct asb_rec, ret_code));
1824
1825 writeb(RESP_IN_ASB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1826
1827 dev->stats.rx_bytes += skb->len;
1828 dev->stats.rx_packets++;
1829
1830 skb->protocol = tr_type_trans(skb, dev);
1831 if (IPv4_p) {
1832 skb->csum = chksum;
1833 skb->ip_summed = CHECKSUM_COMPLETE;
1834 }
1835 netif_rx(skb);
1836 } /*tr_rx */
1837
1838 /*****************************************************************************/
1839
1840 static void ibmtr_reset_timer(struct timer_list *tmr, struct net_device *dev)
1841 {
1842 tmr->expires = jiffies + TR_RETRY_INTERVAL;
1843 tmr->data = (unsigned long) dev;
1844 tmr->function = tok_rerun;
1845 init_timer(tmr);
1846 add_timer(tmr);
1847 }
1848
1849 /*****************************************************************************/
1850
1851 static void tok_rerun(unsigned long dev_addr)
1852 {
1853 struct net_device *dev = (struct net_device *)dev_addr;
1854 struct tok_info *ti = netdev_priv(dev);
1855
1856 if ( ti->open_action == RESTART){
1857 ti->do_tok_int = FIRST_INT;
1858 outb(0, dev->base_addr + ADAPTRESETREL);
1859 #ifdef ENABLE_PAGING
1860 if (ti->page_mask)
1861 writeb(SRPR_ENABLE_PAGING,
1862 ti->mmio + ACA_OFFSET + ACA_RW + SRPR_EVEN);
1863 #endif
1864
1865 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1866 } else
1867 tok_open_adapter(dev_addr);
1868 }
1869
1870 /*****************************************************************************/
1871
1872 static void ibmtr_readlog(struct net_device *dev)
1873 {
1874 struct tok_info *ti;
1875
1876 ti = netdev_priv(dev);
1877
1878 ti->readlog_pending = 0;
1879 SET_PAGE(ti->srb_page);
1880 writeb(DIR_READ_LOG, ti->srb);
1881 writeb(INT_ENABLE, ti->mmio + ACA_OFFSET + ACA_SET + ISRP_EVEN);
1882 writeb(CMD_IN_SRB, ti->mmio + ACA_OFFSET + ACA_SET + ISRA_ODD);
1883
1884 netif_stop_queue(dev);
1885
1886 }
1887
1888 /*****************************************************************************/
1889
1890 static int ibmtr_change_mtu(struct net_device *dev, int mtu)
1891 {
1892 struct tok_info *ti = netdev_priv(dev);
1893
1894 if (ti->ring_speed == 16 && mtu > ti->maxmtu16)
1895 return -EINVAL;
1896 if (ti->ring_speed == 4 && mtu > ti->maxmtu4)
1897 return -EINVAL;
1898 dev->mtu = mtu;
1899 return 0;
1900 }
1901
1902 /*****************************************************************************/
1903 #ifdef MODULE
1904
1905 /* 3COM 3C619C supports 8 interrupts, 32 I/O ports */
1906 static struct net_device *dev_ibmtr[IBMTR_MAX_ADAPTERS];
1907 static int io[IBMTR_MAX_ADAPTERS] = { 0xa20, 0xa24 };
1908 static int irq[IBMTR_MAX_ADAPTERS];
1909 static int mem[IBMTR_MAX_ADAPTERS];
1910
1911 MODULE_LICENSE("GPL");
1912
1913 module_param_array(io, int, NULL, 0);
1914 module_param_array(irq, int, NULL, 0);
1915 module_param_array(mem, int, NULL, 0);
1916
1917 static int __init ibmtr_init(void)
1918 {
1919 int i;
1920 int count=0;
1921
1922 find_turbo_adapters(io);
1923
1924 for (i = 0; i < IBMTR_MAX_ADAPTERS && io[i]; i++) {
1925 struct net_device *dev;
1926 irq[i] = 0;
1927 mem[i] = 0;
1928 dev = alloc_trdev(sizeof(struct tok_info));
1929 if (dev == NULL) {
1930 if (i == 0)
1931 return -ENOMEM;
1932 break;
1933 }
1934 dev->base_addr = io[i];
1935 dev->irq = irq[i];
1936 dev->mem_start = mem[i];
1937
1938 if (ibmtr_probe_card(dev)) {
1939 free_netdev(dev);
1940 continue;
1941 }
1942 dev_ibmtr[i] = dev;
1943 count++;
1944 }
1945 if (count) return 0;
1946 printk("ibmtr: register_netdev() returned non-zero.\n");
1947 return -EIO;
1948 }
1949 module_init(ibmtr_init);
1950
1951 static void __exit ibmtr_cleanup(void)
1952 {
1953 int i;
1954
1955 for (i = 0; i < IBMTR_MAX_ADAPTERS; i++){
1956 if (!dev_ibmtr[i])
1957 continue;
1958 unregister_netdev(dev_ibmtr[i]);
1959 ibmtr_cleanup_card(dev_ibmtr[i]);
1960 free_netdev(dev_ibmtr[i]);
1961 }
1962 }
1963 module_exit(ibmtr_cleanup);
1964 #endif
x86 "subsystem" repository