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Import 2.3.36
[davej-history.git] / drivers / fc4 / socal.c
blobc63aaa6b812e385958a23dd97823cefa625157b9
1 /* socal.c: Sparc SUNW,socal (SOC+) Fibre Channel Sbus adapter support.
2 *
3 * Copyright (C) 1998,1999 Jakub Jelinek (jj@ultra.linux.cz)
4 *
5 * Sources:
6 * Fibre Channel Physical & Signaling Interface (FC-PH), dpANS, 1994
7 * dpANS Fibre Channel Protocol for SCSI (X3.269-199X), Rev. 012, 1995
8 * SOC+ Programming Guide 0.1
9 * Fibre Channel Arbitrated Loop (FC-AL), dpANS rev. 4.5, 1995
10 *
11 * Supported hardware:
12 * On-board SOC+ adapters of Ultra Enterprise servers and sun4d.
13 */
14
15 static char *version =
16 "socal.c: SOC+ driver v1.1 9/Feb/99 Jakub Jelinek (jj@ultra.linux.cz)\n";
17
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/sched.h>
21 #include <linux/types.h>
22 #include <linux/fcntl.h>
23 #include <linux/interrupt.h>
24 #include <linux/ptrace.h>
25 #include <linux/ioport.h>
26 #include <linux/in.h>
27 #include <linux/malloc.h>
28 #include <linux/string.h>
29 #include <linux/init.h>
30 #include <asm/system.h>
31 #include <asm/bitops.h>
32 #include <asm/io.h>
33 #include <asm/dma.h>
34 #include <linux/errno.h>
35 #include <asm/byteorder.h>
36
37 #include <asm/openprom.h>
38 #include <asm/oplib.h>
39 #include <asm/auxio.h>
40 #include <asm/pgtable.h>
41 #include <asm/irq.h>
42
43 /* #define SOCALDEBUG */
44 /* #define HAVE_SOCAL_UCODE */
45 /* #define USE_64BIT_MODE */
46
47 #include "fcp_impl.h"
48 #include "socal.h"
49 #ifdef HAVE_SOCAL_UCODE
50 #include "socal_asm.h"
51 #endif
52
53 #define socal_printk printk ("socal%d: ", s->socal_no); printk
54
55 #ifdef SOCALDEBUG
56 #define SOD(x) socal_printk x;
57 #else
58 #define SOD(x)
59 #endif
60
61 #define for_each_socal(s) for (s = socals; s; s = s->next)
62 struct socal *socals = NULL;
63
64 static void socal_copy_from_xram(void *d, unsigned long xram, long size)
65 {
66 u32 *dp = (u32 *) d;
67 while (size) {
68 *dp++ = sbus_readl(xram);
69 xram += sizeof(u32);
70 size -= sizeof(u32);
71 }
72 }
73
74 static void socal_copy_to_xram(unsigned long xram, void *s, long size)
75 {
76 u32 *sp = (u32 *) s;
77 while (size) {
78 u32 val = *sp++;
79 sbus_writel(val, xram);
80 xram += sizeof(u32);
81 size -= sizeof(u32);
82 }
83 }
84
85 #ifdef HAVE_SOCAL_UCODE
86 static void socal_bzero(unsigned long xram, int size)
87 {
88 while (size) {
89 sbus_writel(0, xram);
90 xram += sizeof(u32);
91 size -= sizeof(u32);
92 }
93 }
94 #endif
95
96 static inline void socal_disable(struct socal *s)
97 {
98 sbus_writel(0, s->regs + IMASK);
99 sbus_writel(SOCAL_CMD_SOFT_RESET, s->regs + CMD);
100 }
101
102 static inline void socal_enable(struct socal *s)
103 {
104 SOD(("enable %08x\n", s->cfg))
105 sbus_writel(0, s->regs + SAE);
106 sbus_writel(s->cfg, s->regs + CFG);
107 sbus_writel(SOCAL_CMD_RSP_QALL, s->regs + CMD);
108 SOCAL_SETIMASK(s, SOCAL_IMASK_RSP_QALL | SOCAL_IMASK_SAE);
109 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
110 }
111
112 static void socal_reset(fc_channel *fc)
113 {
114 socal_port *port = (socal_port *)fc;
115 struct socal *s = port->s;
116
117 /* FIXME */
118 socal_disable(s);
119 s->req[0].seqno = 1;
120 s->req[1].seqno = 1;
121 s->rsp[0].seqno = 1;
122 s->rsp[1].seqno = 1;
123 s->req[0].in = 0;
124 s->req[1].in = 0;
125 s->rsp[0].in = 0;
126 s->rsp[1].in = 0;
127 s->req[0].out = 0;
128 s->req[1].out = 0;
129 s->rsp[0].out = 0;
130 s->rsp[1].out = 0;
131
132 /* FIXME */
133 socal_enable(s);
134 }
135
136 static void inline socal_solicited(struct socal *s, unsigned long qno)
137 {
138 socal_rsp *hwrsp;
139 socal_cq *sw_cq;
140 int token;
141 int status;
142 fc_channel *fc;
143
144 sw_cq = &s->rsp[qno];
145
146 /* Finally an improvement against old SOC :) */
147 sw_cq->in = sbus_readb(s->regs + RESP + qno);
148 SOD (("socal_solicited, %d packets arrived\n",
149 (sw_cq->in - sw_cq->out) & sw_cq->last))
150 for (;;) {
151 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
152 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
153
154 #if defined(SOCALDEBUG) && 0
155 {
156 u32 *u = (u32 *)hwrsp;
157 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
158 u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
159 u += 8;
160 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
161 u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
162 u = (u32 *)s->xram;
163 while (u < ((u32 *)s->regs)) {
164 if (sbus_readl(&u[0]) == 0x00003000 ||
165 sbus_readl(&u[0]) == 0x00003801) {
166 SOD(("Found at %04lx\n",
167 (unsigned long)u - (unsigned long)s->xram))
168 SOD((" %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
169 sbus_readl(&u[0]), sbus_readl(&u[1]),
170 sbus_readl(&u[2]), sbus_readl(&u[3]),
171 sbus_readl(&u[4]), sbus_readl(&u[5]),
172 sbus_readl(&u[6]), sbus_readl(&u[7])))
173 u += 8;
174 SOD((" %08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
175 sbus_readl(&u[0]), sbus_readl(&u[1]),
176 sbus_readl(&u[2]), sbus_readl(&u[3]),
177 sbus_readl(&u[4]), sbus_readl(&u[5]),
178 sbus_readl(&u[6]), sbus_readl(&u[7])))
179 u -= 8;
180 }
181 u++;
182 }
183 }
184 #endif
185
186 token = hwrsp->shdr.token;
187 status = hwrsp->status;
188 fc = (fc_channel *)(&s->port[(token >> 11) & 1]);
189
190 SOD(("Solicited token %08x status %08x\n", token, status))
191 if (status == SOCAL_OK) {
192 fcp_receive_solicited(fc, token >> 12,
193 token & ((1 << 11) - 1),
194 FC_STATUS_OK, NULL);
195 } else {
196 /* We have intentionally defined FC_STATUS_* constants
197 * to match SOCAL_* constants, otherwise we'd have to
198 * translate status.
199 */
200 fcp_receive_solicited(fc, token >> 12,
201 token & ((1 << 11) - 1), status, &hwrsp->fchdr);
202 }
203
204 if (++sw_cq->out > sw_cq->last) {
205 sw_cq->seqno++;
206 sw_cq->out = 0;
207 }
208
209 if (sw_cq->out == sw_cq->in) {
210 sw_cq->in = sbus_readb(s->regs + RESP + qno);
211 if (sw_cq->out == sw_cq->in) {
212 /* Tell the hardware about it */
213 sbus_writel((sw_cq->out << 24) |
214 (SOCAL_CMD_RSP_QALL &
215 ~(SOCAL_CMD_RSP_Q0 << qno)),
216 s->regs + CMD);
217
218 /* Read it, so that we're sure it has been updated */
219 sbus_readl(s->regs + CMD);
220 sw_cq->in = sbus_readb(s->regs + RESP + qno);
221 if (sw_cq->out == sw_cq->in)
222 break;
223 }
224 }
225 }
226 }
227
228 static void inline socal_request (struct socal *s, u32 cmd)
229 {
230 SOCAL_SETIMASK(s, s->imask & ~(cmd & SOCAL_CMD_REQ_QALL));
231 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
232
233 SOD(("Queues available %08x OUT %X\n", cmd, s->regs->reqpr[0]))
234 if (s->port[s->curr_port].fc.state != FC_STATE_OFFLINE) {
235 fcp_queue_empty ((fc_channel *)&(s->port[s->curr_port]));
236 if (((s->req[1].in + 1) & s->req[1].last) != (s->req[1].out))
237 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
238 } else {
239 fcp_queue_empty ((fc_channel *)&(s->port[1 - s->curr_port]));
240 }
241 if (s->port[1 - s->curr_port].fc.state != FC_STATE_OFFLINE)
242 s->curr_port ^= 1;
243 }
244
245 static void inline socal_unsolicited (struct socal *s, unsigned long qno)
246 {
247 socal_rsp *hwrsp, *hwrspc;
248 socal_cq *sw_cq;
249 int count;
250 int status;
251 int flags;
252 fc_channel *fc;
253
254 sw_cq = &s->rsp[qno];
255
256 sw_cq->in = sbus_readb(s->regs + RESP + qno);
257 SOD (("socal_unsolicited, %d packets arrived, in %d\n",
258 (sw_cq->in - sw_cq->out) & sw_cq->last, sw_cq->in))
259 while (sw_cq->in != sw_cq->out) {
260 /* ...real work per entry here... */
261 hwrsp = (socal_rsp *)sw_cq->pool + sw_cq->out;
262 SOD(("hwrsp %p out %d\n", hwrsp, sw_cq->out))
263
264 #if defined(SOCALDEBUG) && 0
265 {
266 u32 *u = (u32 *)hwrsp;
267 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
268 u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
269 u += 8;
270 SOD(("%08x.%08x.%08x.%08x.%08x.%08x.%08x.%08x\n",
271 u[0],u[1],u[2],u[3],u[4],u[5],u[6],u[7]))
272 }
273 #endif
274
275 hwrspc = NULL;
276 flags = hwrsp->shdr.flags;
277 count = hwrsp->count;
278 fc = (fc_channel *)&s->port[flags & SOCAL_PORT_B];
279 SOD(("FC %08lx\n", (long)fc))
280
281 if (count != 1) {
282 /* Ugh, continuation entries */
283 u8 in;
284
285 if (count != 2) {
286 printk("%s: Too many continuations entries %d\n",
287 fc->name, count);
288 goto update_out;
289 }
290
291 in = sw_cq->in;
292 if (in < sw_cq->out)
293 in += sw_cq->last + 1;
294 if (in < sw_cq->out + 2) {
295 /* Ask the hardware if they haven't arrived yet. */
296 sbus_writel((sw_cq->out << 24) |
297 (SOCAL_CMD_RSP_QALL &
298 ~(SOCAL_CMD_RSP_Q0 << qno)),
299 s->regs + CMD);
300
301 /* Read it, so that we're sure it has been updated */
302 sbus_readl(s->regs + CMD);
303 sw_cq->in = sbus_readb(s->regs + RESP + qno);
304 in = sw_cq->in;
305 if (in < sw_cq->out)
306 in += sw_cq->last + 1;
307 if (in < sw_cq->out + 2) /* Nothing came, let us wait */
308 return;
309 }
310 if (sw_cq->out == sw_cq->last)
311 hwrspc = (socal_rsp *)sw_cq->pool;
312 else
313 hwrspc = hwrsp + 1;
314 }
315
316 switch (flags & ~SOCAL_PORT_B) {
317 case SOCAL_STATUS:
318 status = hwrsp->status;
319 switch (status) {
320 case SOCAL_ONLINE:
321 SOD(("State change to ONLINE\n"));
322 fcp_state_change(fc, FC_STATE_ONLINE);
323 break;
324 case SOCAL_ONLINE_LOOP:
325 SOD(("State change to ONLINE_LOOP\n"));
326 fcp_state_change(fc, FC_STATE_ONLINE);
327 break;
328 case SOCAL_OFFLINE:
329 SOD(("State change to OFFLINE\n"));
330 fcp_state_change(fc, FC_STATE_OFFLINE);
331 break;
332 default:
333 printk ("%s: Unknown STATUS no %d\n",
334 fc->name, status);
335 break;
336 };
337
338 break;
339 case (SOCAL_UNSOLICITED|SOCAL_FC_HDR):
340 {
341 int r_ctl = *((u8 *)&hwrsp->fchdr);
342 unsigned len;
343
344 if ((r_ctl & 0xf0) == R_CTL_EXTENDED_SVC) {
345 len = hwrsp->shdr.bytecnt;
346 if (len < 4 || !hwrspc) {
347 printk ("%s: Invalid R_CTL %02x "
348 "continuation entries\n",
349 fc->name, r_ctl);
350 } else {
351 if (len > 60)
352 len = 60;
353 if (*(u32 *)hwrspc == LS_DISPLAY) {
354 int i;
355
356 for (i = 4; i < len; i++)
357 if (((u8 *)hwrspc)[i] == '\n')
358 ((u8 *)hwrspc)[i] = ' ';
359 ((u8 *)hwrspc)[len] = 0;
360 printk ("%s message: %s\n",
361 fc->name, ((u8 *)hwrspc) + 4);
362 } else {
363 printk ("%s: Unknown LS_CMD "
364 "%08x\n", fc->name,
365 *(u32 *)hwrspc);
366 }
367 }
368 } else {
369 printk ("%s: Unsolicited R_CTL %02x "
370 "not handled\n", fc->name, r_ctl);
371 }
372 }
373 break;
374 default:
375 printk ("%s: Unexpected flags %08x\n", fc->name, flags);
376 break;
377 };
378 update_out:
379 if (++sw_cq->out > sw_cq->last) {
380 sw_cq->seqno++;
381 sw_cq->out = 0;
382 }
383
384 if (hwrspc) {
385 if (++sw_cq->out > sw_cq->last) {
386 sw_cq->seqno++;
387 sw_cq->out = 0;
388 }
389 }
390
391 if (sw_cq->out == sw_cq->in) {
392 sw_cq->in = sbus_readb(s->regs + RESP + qno);
393 if (sw_cq->out == sw_cq->in) {
394 /* Tell the hardware about it */
395 sbus_writel((sw_cq->out << 24) |
396 (SOCAL_CMD_RSP_QALL &
397 ~(SOCAL_CMD_RSP_Q0 << qno)),
398 s->regs + CMD);
399
400 /* Read it, so that we're sure it has been updated */
401 sbus_readl(s->regs + CMD);
402 sw_cq->in = sbus_readb(s->regs + RESP + qno);
403 }
404 }
405 }
406 }
407
408 static void socal_intr(int irq, void *dev_id, struct pt_regs *regs)
409 {
410 u32 cmd;
411 unsigned long flags;
412 register struct socal *s = (struct socal *)dev_id;
413
414 spin_lock_irqsave(&io_request_lock, flags);
415 cmd = sbus_readl(s->regs + CMD);
416 for (; (cmd = SOCAL_INTR (s, cmd)); cmd = sbus_readl(s->regs + CMD)) {
417 #ifdef SOCALDEBUG
418 static int cnt = 0;
419 if (cnt++ < 50)
420 printk("soc_intr %08x\n", cmd);
421 #endif
422 if (cmd & SOCAL_CMD_RSP_Q2)
423 socal_unsolicited (s, SOCAL_UNSOLICITED_RSP_Q);
424 if (cmd & SOCAL_CMD_RSP_Q1)
425 socal_unsolicited (s, SOCAL_SOLICITED_BAD_RSP_Q);
426 if (cmd & SOCAL_CMD_RSP_Q0)
427 socal_solicited (s, SOCAL_SOLICITED_RSP_Q);
428 if (cmd & SOCAL_CMD_REQ_QALL)
429 socal_request (s, cmd);
430 }
431 spin_unlock_irqrestore(&io_request_lock, flags);
432 }
433
434 #define TOKEN(proto, port, token) (((proto)<<12)|(token)|(port))
435
436 static int socal_hw_enque (fc_channel *fc, fcp_cmnd *fcmd)
437 {
438 socal_port *port = (socal_port *)fc;
439 struct socal *s = port->s;
440 unsigned long qno;
441 socal_cq *sw_cq;
442 int cq_next_in;
443 socal_req *request;
444 fc_hdr *fch;
445 int i;
446
447 if (fcmd->proto == TYPE_SCSI_FCP)
448 qno = 1;
449 else
450 qno = 0;
451 SOD(("Putting a FCP packet type %d into hw queue %d\n", fcmd->proto, qno))
452 if (s->imask & (SOCAL_IMASK_REQ_Q0 << qno)) {
453 SOD(("EIO %08x\n", s->imask))
454 return -EIO;
455 }
456 sw_cq = s->req + qno;
457 cq_next_in = (sw_cq->in + 1) & sw_cq->last;
458
459 if (cq_next_in == sw_cq->out &&
460 cq_next_in == (sw_cq->out = sbus_readb(s->regs + REQP + qno))) {
461 SOD(("%d IN %d OUT %d LAST %d\n",
462 qno, sw_cq->in,
463 sw_cq->out, sw_cq->last))
464 SOCAL_SETIMASK(s, s->imask | (SOCAL_IMASK_REQ_Q0 << qno));
465 SOD(("imask %08x %08x\n", s->imask, sbus_readl(s->regs + IMASK)));
466
467 /* If queue is full, just say NO. */
468 return -EBUSY;
469 }
470
471 request = sw_cq->pool + sw_cq->in;
472 fch = &request->fchdr;
473
474 switch (fcmd->proto) {
475 case TYPE_SCSI_FCP:
476 request->shdr.token = TOKEN(TYPE_SCSI_FCP, port->mask, fcmd->token);
477 request->data[0].base = fc->dma_scsi_cmd + fcmd->token * sizeof(fcp_cmd);
478 request->data[0].count = sizeof(fcp_cmd);
479 request->data[1].base = fc->dma_scsi_rsp + fcmd->token * fc->rsp_size;
480 request->data[1].count = fc->rsp_size;
481 if (fcmd->data) {
482 request->shdr.segcnt = 3;
483 i = fc->scsi_cmd_pool[fcmd->token].fcp_data_len;
484 request->shdr.bytecnt = i;
485 request->data[2].base = fcmd->data;
486 request->data[2].count = i;
487 request->type = (fc->scsi_cmd_pool[fcmd->token].fcp_cntl & FCP_CNTL_WRITE) ?
488 SOCAL_CQTYPE_IO_WRITE : SOCAL_CQTYPE_IO_READ;
489 } else {
490 request->shdr.segcnt = 2;
491 request->shdr.bytecnt = 0;
492 request->data[2].base = 0;
493 request->data[2].count = 0;
494 request->type = SOCAL_CQTYPE_SIMPLE;
495 }
496 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
497 FILL_FCHDR_SID(fch, fc->sid);
498 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
499 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
500 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
501 fch->param = 0;
502 request->shdr.flags = port->flags;
503 request->shdr.class = fc->posmap ? 3 : 2;
504 break;
505
506 case PROTO_OFFLINE:
507 memset (request, 0, sizeof(*request));
508 request->shdr.token = TOKEN(PROTO_OFFLINE, port->mask, fcmd->token);
509 request->type = SOCAL_CQTYPE_OFFLINE;
510 FILL_FCHDR_RCTL_DID(fch, R_CTL_COMMAND, fcmd->did);
511 FILL_FCHDR_SID(fch, fc->sid);
512 FILL_FCHDR_TYPE_FCTL(fch, TYPE_SCSI_FCP, F_CTL_FIRST_SEQ | F_CTL_SEQ_INITIATIVE);
513 FILL_FCHDR_SEQ_DF_SEQ(fch, 0, 0, 0);
514 FILL_FCHDR_OXRX(fch, 0xffff, 0xffff);
515 request->shdr.flags = port->flags;
516 break;
517
518 case PROTO_REPORT_AL_MAP:
519 memset (request, 0, sizeof(*request));
520 request->shdr.token = TOKEN(PROTO_REPORT_AL_MAP, port->mask, fcmd->token);
521 request->type = SOCAL_CQTYPE_REPORT_MAP;
522 request->shdr.flags = port->flags;
523 request->shdr.segcnt = 1;
524 request->shdr.bytecnt = sizeof(fc_al_posmap);
525 request->data[0].base = fcmd->cmd;
526 request->data[0].count = sizeof(fc_al_posmap);
527 break;
528
529 default:
530 request->shdr.token = TOKEN(fcmd->proto, port->mask, fcmd->token);
531 request->shdr.class = fc->posmap ? 3 : 2;
532 request->shdr.flags = port->flags;
533 memcpy (fch, &fcmd->fch, sizeof(fc_hdr));
534 request->data[0].count = fcmd->cmdlen;
535 request->data[1].count = fcmd->rsplen;
536 request->type = fcmd->class;
537 switch (fcmd->class) {
538 case FC_CLASS_OUTBOUND:
539 request->data[0].base = fcmd->cmd;
540 request->data[0].count = fcmd->cmdlen;
541 request->type = SOCAL_CQTYPE_OUTBOUND;
542 request->shdr.bytecnt = fcmd->cmdlen;
543 request->shdr.segcnt = 1;
544 break;
545 case FC_CLASS_INBOUND:
546 request->data[0].base = fcmd->rsp;
547 request->data[0].count = fcmd->rsplen;
548 request->type = SOCAL_CQTYPE_INBOUND;
549 request->shdr.bytecnt = 0;
550 request->shdr.segcnt = 1;
551 break;
552 case FC_CLASS_SIMPLE:
553 request->data[0].base = fcmd->cmd;
554 request->data[1].base = fcmd->rsp;
555 request->data[0].count = fcmd->cmdlen;
556 request->data[1].count = fcmd->rsplen;
557 request->type = SOCAL_CQTYPE_SIMPLE;
558 request->shdr.bytecnt = fcmd->cmdlen;
559 request->shdr.segcnt = 2;
560 break;
561 case FC_CLASS_IO_READ:
562 case FC_CLASS_IO_WRITE:
563 request->data[0].base = fcmd->cmd;
564 request->data[1].base = fcmd->rsp;
565 request->data[0].count = fcmd->cmdlen;
566 request->data[1].count = fcmd->rsplen;
567 request->type = (fcmd->class == FC_CLASS_IO_READ) ? SOCAL_CQTYPE_IO_READ : SOCAL_CQTYPE_IO_WRITE;
568 if (fcmd->data) {
569 request->data[2].base = fcmd->data;
570 request->data[2].count = fcmd->datalen;
571 request->shdr.bytecnt = fcmd->datalen;
572 request->shdr.segcnt = 3;
573 } else {
574 request->shdr.bytecnt = 0;
575 request->shdr.segcnt = 2;
576 }
577 break;
578 }
579 break;
580 }
581
582 request->count = 1;
583 request->flags = 0;
584 request->seqno = sw_cq->seqno;
585
586 SOD(("queueing token %08x\n", request->shdr.token))
587
588 /* And now tell the SOCAL about it */
589
590 if (++sw_cq->in > sw_cq->last) {
591 sw_cq->in = 0;
592 sw_cq->seqno++;
593 }
594
595 SOD(("Putting %08x into cmd\n", SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno)))
596
597 sbus_writel(SOCAL_CMD_RSP_QALL | (sw_cq->in << 24) | (SOCAL_CMD_REQ_Q0 << qno),
598 s->regs + CMD);
599
600 /* Read so that command is completed */
601 sbus_readl(s->regs + CMD);
602
603 return 0;
604 }
605
606 static inline void socal_download_fw(struct socal *s)
607 {
608 #ifdef HAVE_SOCAL_UCODE
609 SOD(("Loading %ld bytes from %p to %p\n", sizeof(socal_ucode), socal_ucode, s->xram))
610 socal_copy_to_xram(s->xram, socal_ucode, sizeof(socal_ucode));
611 SOD(("Clearing the rest of memory\n"))
612 socal_bzero (s->xram + sizeof(socal_ucode), 65536 - sizeof(socal_ucode));
613 SOD(("Done\n"))
614 #endif
615 }
616
617 /* Check for what the best SBUS burst we can use happens
618 * to be on this machine.
619 */
620 static inline void socal_init_bursts(struct socal *s, struct sbus_dev *sdev)
621 {
622 int bsizes, bsizes_more;
623 u32 cfg;
624
625 bsizes = (prom_getintdefault(sdev->prom_node,"burst-sizes",0xff) & 0xff);
626 bsizes_more = (prom_getintdefault(sdev->bus->prom_node, "burst-sizes", 0xff) & 0xff);
627 bsizes &= bsizes_more;
628 #ifdef USE_64BIT_MODE
629 #ifdef __sparc_v9__
630 mmu_set_sbus64(sdev, bsizes >> 16);
631 #endif
632 #endif
633 if ((bsizes & 0x7f) == 0x7f)
634 cfg = SOCAL_CFG_BURST_64;
635 else if ((bsizes & 0x3f) == 0x3f)
636 cfg = SOCAL_CFG_BURST_32;
637 else if ((bsizes & 0x1f) == 0x1f)
638 cfg = SOCAL_CFG_BURST_16;
639 else
640 cfg = SOCAL_CFG_BURST_4;
641 #ifdef USE_64BIT_MODE
642 #ifdef __sparc_v9__
643 /* What is BURST_128? -jj */
644 if ((bsizes & 0x780000) == 0x780000)
645 cfg |= (SOCAL_CFG_BURST_64 << 8) | SOCAL_CFG_SBUS_ENHANCED;
646 else if ((bsizes & 0x380000) == 0x380000)
647 cfg |= (SOCAL_CFG_BURST_32 << 8) | SOCAL_CFG_SBUS_ENHANCED;
648 else if ((bsizes & 0x180000) == 0x180000)
649 cfg |= (SOCAL_CFG_BURST_16 << 8) | SOCAL_CFG_SBUS_ENHANCED;
650 else
651 cfg |= (SOCAL_CFG_BURST_8 << 8) | SOCAL_CFG_SBUS_ENHANCED;
652 #endif
653 #endif
654 s->cfg = cfg;
655 }
656
657 static inline void socal_init(struct sbus_dev *sdev, int no)
658 {
659 unsigned char tmp[60];
660 int propl;
661 struct socal *s;
662 static unsigned version_printed = 0;
663 socal_hw_cq cq[8];
664 int size, i;
665 int irq, node;
666
667 s = kmalloc (sizeof (struct socal), GFP_KERNEL);
668 if (!s) return;
669 memset (s, 0, sizeof(struct socal));
670 s->socal_no = no;
671
672 SOD(("socals %08lx socal_intr %08lx socal_hw_enque %08lx\n",
673 (long)socals, (long)socal_intr, (long)socal_hw_enque))
674 if (version_printed++ == 0)
675 printk (version);
676 #ifdef MODULE
677 s->port[0].fc.module = &__this_module;
678 s->port[1].fc.module = &__this_module;
679 #else
680 s->port[0].fc.module = NULL;
681 s->port[1].fc.module = NULL;
682 #endif
683
684 s->next = socals;
685 socals = s;
686 s->port[0].fc.dev = sdev;
687 s->port[1].fc.dev = sdev;
688 s->port[0].s = s;
689 s->port[1].s = s;
690
691 s->port[0].fc.next = &s->port[1].fc;
692
693 /* World Wide Name of SOCAL */
694 propl = prom_getproperty (sdev->prom_node, "wwn", tmp, sizeof(tmp));
695 if (propl != sizeof (fc_wwn)) {
696 s->wwn.naaid = NAAID_IEEE_REG;
697 s->wwn.nportid = 0x123;
698 s->wwn.hi = 0x1234;
699 s->wwn.lo = 0x12345678;
700 } else
701 memcpy (&s->wwn, tmp, sizeof (fc_wwn));
702
703 memcpy (&s->port[0].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
704 s->port[0].fc.wwn_nport.lo++;
705 memcpy (&s->port[1].fc.wwn_nport, &s->wwn, sizeof (fc_wwn));
706 s->port[1].fc.wwn_nport.lo+=2;
707
708 node = prom_getchild (sdev->prom_node);
709 while (node && (node = prom_searchsiblings (node, "sf"))) {
710 int port;
711
712 port = prom_getintdefault(node, "port#", -1);
713 switch (port) {
714 case 0:
715 case 1:
716 if (prom_getproplen(node, "port-wwn") == sizeof (fc_wwn))
717 prom_getproperty (node, "port-wwn",
718 (char *)&s->port[port].fc.wwn_nport,
719 sizeof (fc_wwn));
720 break;
721 default:
722 break;
723 };
724
725 node = prom_getsibling(node);
726 }
727
728 memcpy (&s->port[0].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
729 memcpy (&s->port[1].fc.wwn_node, &s->wwn, sizeof (fc_wwn));
730 SOD(("Got wwns %08x%08x ports %08x%08x and %08x%08x\n",
731 *(u32 *)&s->port[0].fc.wwn_node, s->port[0].fc.wwn_node.lo,
732 *(u32 *)&s->port[0].fc.wwn_nport, s->port[0].fc.wwn_nport.lo,
733 *(u32 *)&s->port[1].fc.wwn_nport, s->port[1].fc.wwn_nport.lo))
734
735 s->port[0].fc.sid = 1;
736 s->port[1].fc.sid = 17;
737 s->port[0].fc.did = 2;
738 s->port[1].fc.did = 18;
739
740 s->port[0].fc.reset = socal_reset;
741 s->port[1].fc.reset = socal_reset;
742
743 if (sdev->num_registers == 1) {
744 s->eeprom = sbus_ioremap(&sdev->resource[0], 0,
745 sdev->reg_addrs[0].reg_size, "socal xram");
746 if (sdev->reg_addrs[0].reg_size > 0x20000)
747 s->xram = s->eeprom + 0x10000UL;
748 else
749 s->xram = s->eeprom;
750 s->regs = (s->xram + 0x10000UL);
751 } else {
752 /* E.g. starfire presents 3 registers for SOCAL */
753 s->xram = sbus_ioremap(&sdev->resource[1], 0,
754 sdev->reg_addrs[1].reg_size, "socal xram");
755 s->regs = sbus_ioremap(&sdev->resource[2], 0,
756 sdev->reg_addrs[2].reg_size, "socal regs");
757 }
758
759 socal_init_bursts(s, sdev);
760
761 SOD(("Disabling SOCAL\n"))
762
763 socal_disable (s);
764
765 irq = sdev->irqs[0];
766
767 if (request_irq (irq, socal_intr, SA_SHIRQ, "SOCAL", (void *)s)) {
768 socal_printk ("Cannot order irq %d to go\n", irq);
769 socals = s->next;
770 return;
771 }
772
773 SOD(("SOCAL uses IRQ %s\n", __irq_itoa(irq)))
774
775 s->port[0].fc.irq = irq;
776 s->port[1].fc.irq = irq;
777
778 sprintf (s->port[0].fc.name, "socal%d port A", no);
779 sprintf (s->port[1].fc.name, "socal%d port B", no);
780 s->port[0].flags = SOCAL_FC_HDR | SOCAL_PORT_A;
781 s->port[1].flags = SOCAL_FC_HDR | SOCAL_PORT_B;
782 s->port[1].mask = (1 << 11);
783
784 s->port[0].fc.hw_enque = socal_hw_enque;
785 s->port[1].fc.hw_enque = socal_hw_enque;
786
787 socal_download_fw (s);
788
789 SOD(("Downloaded firmware\n"))
790
791 /* Now setup xram circular queues */
792 memset (cq, 0, sizeof(cq));
793
794 size = (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
795 SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
796 SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req);
797 s->req_cpu = sbus_alloc_consistant(sdev, size, &s->req_dvma);
798 s->req[0].pool = s->req_cpu;
799 cq[0].address = s->req_dvma;
800 s->req[1].pool = s->req[0].pool + SOCAL_CQ_REQ0_SIZE;
801 s->rsp[0].pool = s->req[1].pool + SOCAL_CQ_REQ1_SIZE;
802 s->rsp[1].pool = s->rsp[0].pool + SOCAL_CQ_RSP0_SIZE;
803 s->rsp[2].pool = s->rsp[1].pool + SOCAL_CQ_RSP1_SIZE;
804
805 s->req[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET);
806 s->req[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_REQ_OFFSET + sizeof(socal_hw_cq));
807 s->rsp[0].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET);
808 s->rsp[1].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + sizeof(socal_hw_cq));
809 s->rsp[2].hw_cq = (socal_hw_cq *)(s->xram + SOCAL_CQ_RSP_OFFSET + 2 * sizeof(socal_hw_cq));
810
811 cq[1].address = cq[0].address + (SOCAL_CQ_REQ0_SIZE * sizeof(socal_req));
812 cq[4].address = cq[1].address + (SOCAL_CQ_REQ1_SIZE * sizeof(socal_req));
813 cq[5].address = cq[4].address + (SOCAL_CQ_RSP0_SIZE * sizeof(socal_req));
814 cq[6].address = cq[5].address + (SOCAL_CQ_RSP1_SIZE * sizeof(socal_req));
815
816 cq[0].last = SOCAL_CQ_REQ0_SIZE - 1;
817 cq[1].last = SOCAL_CQ_REQ1_SIZE - 1;
818 cq[4].last = SOCAL_CQ_RSP0_SIZE - 1;
819 cq[5].last = SOCAL_CQ_RSP1_SIZE - 1;
820 cq[6].last = SOCAL_CQ_RSP2_SIZE - 1;
821 for (i = 0; i < 8; i++)
822 cq[i].seqno = 1;
823
824 s->req[0].last = SOCAL_CQ_REQ0_SIZE - 1;
825 s->req[1].last = SOCAL_CQ_REQ1_SIZE - 1;
826 s->rsp[0].last = SOCAL_CQ_RSP0_SIZE - 1;
827 s->rsp[1].last = SOCAL_CQ_RSP1_SIZE - 1;
828 s->rsp[2].last = SOCAL_CQ_RSP2_SIZE - 1;
829
830 s->req[0].seqno = 1;
831 s->req[1].seqno = 1;
832 s->rsp[0].seqno = 1;
833 s->rsp[1].seqno = 1;
834 s->rsp[2].seqno = 1;
835
836 socal_copy_to_xram(s->xram + SOCAL_CQ_REQ_OFFSET, cq, sizeof(cq));
837
838 SOD(("Setting up params\n"))
839
840 /* Make our sw copy of SOCAL service parameters */
841 socal_copy_from_xram(s->serv_params, s->xram + 0x280, sizeof (s->serv_params));
842
843 s->port[0].fc.common_svc = (common_svc_parm *)s->serv_params;
844 s->port[0].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
845 s->port[1].fc.common_svc = (common_svc_parm *)&s->serv_params;
846 s->port[1].fc.class_svcs = (svc_parm *)(s->serv_params + 0x20);
847
848 socal_enable (s);
849
850 SOD(("Enabled SOCAL\n"))
851 }
852
853 #ifndef MODULE
854 int __init socal_probe(void)
855 #else
856 int init_module(void)
857 #endif
858 {
859 struct sbus_bus *sbus;
860 struct sbus_dev *sdev = 0;
861 struct socal *s;
862 int cards = 0;
863
864 for_each_sbus(sbus) {
865 for_each_sbusdev(sdev, sbus) {
866 if(!strcmp(sdev->prom_name, "SUNW,socal")) {
867 socal_init(sdev, cards);
868 cards++;
869 }
870 }
871 }
872 if (!cards)
873 return -EIO;
874
875 for_each_socal(s)
876 if (s->next)
877 s->port[1].fc.next = &s->next->port[0].fc;
878
879 fcp_init (&socals->port[0].fc);
880 return 0;
881 }
882
883 EXPORT_NO_SYMBOLS;
884
885 #ifdef MODULE
886 void cleanup_module(void)
887 {
888 struct socal *s;
889 int irq;
890 struct sbus_dev *sdev;
891
892 for_each_socal(s) {
893 irq = s->port[0].fc.irq;
894 disable_irq (irq);
895 free_irq (irq, s);
896
897 fcp_release(&(s->port[0].fc), 2);
898
899 sdev = s->port[0].fc.dev;
900 if (sdev->num_registers == 1) {
901 sbus_iounmap(s->eeprom, sdev->reg_addrs[0].reg_size);
902 } else {
903 sbus_iounmap(s->xram, sdev->reg_addrs[1].reg_size);
904 sbus_iounmap(s->regs, sdev->reg_addrs[2].reg_size);
905 }
906 sbus_free_consistant(sdev,
907 (SOCAL_CQ_REQ0_SIZE + SOCAL_CQ_REQ1_SIZE +
908 SOCAL_CQ_RSP0_SIZE + SOCAL_CQ_RSP1_SIZE +
909 SOCAL_CQ_RSP2_SIZE) * sizeof(socal_req),
910 s->req_cpu, s->req_dvma);
911 }
912 }
913 #endif
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