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[SCSI] sym2: claim only "Storage" class
[linux-2.6.22.y-op.git] / drivers / scsi / sym53c8xx_2 / sym_glue.c
blob739d3ef46a407d14d1d3a309676a6c1588b182f0
1 /*
2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
3 * of PCI-SCSI IO processors.
4 *
5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
6 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx>
7 *
8 * This driver is derived from the Linux sym53c8xx driver.
9 * Copyright (C) 1998-2000 Gerard Roudier
10 *
11 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
12 * a port of the FreeBSD ncr driver to Linux-1.2.13.
13 *
14 * The original ncr driver has been written for 386bsd and FreeBSD by
15 * Wolfgang Stanglmeier <wolf@cologne.de>
16 * Stefan Esser <se@mi.Uni-Koeln.de>
17 * Copyright (C) 1994 Wolfgang Stanglmeier
18 *
19 * Other major contributions:
20 *
21 * NVRAM detection and reading.
22 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
23 *
24 *-----------------------------------------------------------------------------
25 *
26 * This program is free software; you can redistribute it and/or modify
27 * it under the terms of the GNU General Public License as published by
28 * the Free Software Foundation; either version 2 of the License, or
29 * (at your option) any later version.
30 *
31 * This program is distributed in the hope that it will be useful,
32 * but WITHOUT ANY WARRANTY; without even the implied warranty of
33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
34 * GNU General Public License for more details.
35 *
36 * You should have received a copy of the GNU General Public License
37 * along with this program; if not, write to the Free Software
38 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
39 */
40 #include <linux/ctype.h>
41 #include <linux/init.h>
42 #include <linux/interrupt.h>
43 #include <linux/module.h>
44 #include <linux/moduleparam.h>
45 #include <linux/spinlock.h>
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_tcq.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_transport.h>
50
51 #include "sym_glue.h"
52 #include "sym_nvram.h"
53
54 #define NAME53C "sym53c"
55 #define NAME53C8XX "sym53c8xx"
56
57 #define IRQ_FMT "%d"
58 #define IRQ_PRM(x) (x)
59
60 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
61 unsigned int sym_debug_flags = 0;
62
63 static char *excl_string;
64 static char *safe_string;
65 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
66 module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0);
67 module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
68 module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
69 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
70 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
71 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
72 module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
73 module_param_named(verb, sym_driver_setup.verbose, byte, 0);
74 module_param_named(debug, sym_debug_flags, uint, 0);
75 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
76 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
77 module_param_named(excl, excl_string, charp, 0);
78 module_param_named(safe, safe_string, charp, 0);
79
80 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
81 MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN");
82 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
83 MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
84 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
85 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
86 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
87 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
88 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
89 MODULE_PARM_DESC(debug, "Set bits to enable debugging");
90 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
91 MODULE_PARM_DESC(nvram, "Option currently not used");
92 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
93 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
94
95 MODULE_LICENSE("GPL");
96 MODULE_VERSION(SYM_VERSION);
97 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
98 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
99
100 static void sym2_setup_params(void)
101 {
102 char *p = excl_string;
103 int xi = 0;
104
105 while (p && (xi < 8)) {
106 char *next_p;
107 int val = (int) simple_strtoul(p, &next_p, 0);
108 sym_driver_setup.excludes[xi++] = val;
109 p = next_p;
110 }
111
112 if (safe_string) {
113 if (*safe_string == 'y') {
114 sym_driver_setup.max_tag = 0;
115 sym_driver_setup.burst_order = 0;
116 sym_driver_setup.scsi_led = 0;
117 sym_driver_setup.scsi_diff = 1;
118 sym_driver_setup.irq_mode = 0;
119 sym_driver_setup.scsi_bus_check = 2;
120 sym_driver_setup.host_id = 7;
121 sym_driver_setup.verbose = 2;
122 sym_driver_setup.settle_delay = 10;
123 sym_driver_setup.use_nvram = 1;
124 } else if (*safe_string != 'n') {
125 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
126 " passed to safe option", safe_string);
127 }
128 }
129 }
130
131 static struct scsi_transport_template *sym2_transport_template = NULL;
132
133 /*
134 * Driver private area in the SCSI command structure.
135 */
136 struct sym_ucmd { /* Override the SCSI pointer structure */
137 dma_addr_t data_mapping;
138 unsigned char data_mapped;
139 unsigned char to_do; /* For error handling */
140 void (*old_done)(struct scsi_cmnd *); /* For error handling */
141 struct completion *eh_done; /* For error handling */
142 };
143
144 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
145 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
146
147 static void __unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
148 {
149 int dma_dir = cmd->sc_data_direction;
150
151 switch(SYM_UCMD_PTR(cmd)->data_mapped) {
152 case 2:
153 pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, dma_dir);
154 break;
155 case 1:
156 pci_unmap_single(pdev, SYM_UCMD_PTR(cmd)->data_mapping,
157 cmd->request_bufflen, dma_dir);
158 break;
159 }
160 SYM_UCMD_PTR(cmd)->data_mapped = 0;
161 }
162
163 static dma_addr_t __map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
164 {
165 dma_addr_t mapping;
166 int dma_dir = cmd->sc_data_direction;
167
168 mapping = pci_map_single(pdev, cmd->request_buffer,
169 cmd->request_bufflen, dma_dir);
170 if (mapping) {
171 SYM_UCMD_PTR(cmd)->data_mapped = 1;
172 SYM_UCMD_PTR(cmd)->data_mapping = mapping;
173 }
174
175 return mapping;
176 }
177
178 static int __map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd)
179 {
180 int use_sg;
181 int dma_dir = cmd->sc_data_direction;
182
183 use_sg = pci_map_sg(pdev, cmd->request_buffer, cmd->use_sg, dma_dir);
184 if (use_sg > 0) {
185 SYM_UCMD_PTR(cmd)->data_mapped = 2;
186 SYM_UCMD_PTR(cmd)->data_mapping = use_sg;
187 }
188
189 return use_sg;
190 }
191
192 #define unmap_scsi_data(np, cmd) \
193 __unmap_scsi_data(np->s.device, cmd)
194 #define map_scsi_single_data(np, cmd) \
195 __map_scsi_single_data(np->s.device, cmd)
196 #define map_scsi_sg_data(np, cmd) \
197 __map_scsi_sg_data(np->s.device, cmd)
198 /*
199 * Complete a pending CAM CCB.
200 */
201 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
202 {
203 unmap_scsi_data(np, cmd);
204 cmd->scsi_done(cmd);
205 }
206
207 static void sym_xpt_done2(struct sym_hcb *np, struct scsi_cmnd *cmd, int cam_status)
208 {
209 sym_set_cam_status(cmd, cam_status);
210 sym_xpt_done(np, cmd);
211 }
212
213
214 /*
215 * Tell the SCSI layer about a BUS RESET.
216 */
217 void sym_xpt_async_bus_reset(struct sym_hcb *np)
218 {
219 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
220 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
221 np->s.settle_time_valid = 1;
222 if (sym_verbose >= 2)
223 printf_info("%s: command processing suspended for %d seconds\n",
224 sym_name(np), sym_driver_setup.settle_delay);
225 }
226
227 /*
228 * Tell the SCSI layer about a BUS DEVICE RESET message sent.
229 */
230 void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target)
231 {
232 printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target);
233 }
234
235 /*
236 * Choose the more appropriate CAM status if
237 * the IO encountered an extended error.
238 */
239 static int sym_xerr_cam_status(int cam_status, int x_status)
240 {
241 if (x_status) {
242 if (x_status & XE_PARITY_ERR)
243 cam_status = DID_PARITY;
244 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
245 cam_status = DID_ERROR;
246 else if (x_status & XE_BAD_PHASE)
247 cam_status = DID_ERROR;
248 else
249 cam_status = DID_ERROR;
250 }
251 return cam_status;
252 }
253
254 /*
255 * Build CAM result for a failed or auto-sensed IO.
256 */
257 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
258 {
259 struct scsi_cmnd *cmd = cp->cmd;
260 u_int cam_status, scsi_status, drv_status;
261
262 drv_status = 0;
263 cam_status = DID_OK;
264 scsi_status = cp->ssss_status;
265
266 if (cp->host_flags & HF_SENSE) {
267 scsi_status = cp->sv_scsi_status;
268 resid = cp->sv_resid;
269 if (sym_verbose && cp->sv_xerr_status)
270 sym_print_xerr(cmd, cp->sv_xerr_status);
271 if (cp->host_status == HS_COMPLETE &&
272 cp->ssss_status == S_GOOD &&
273 cp->xerr_status == 0) {
274 cam_status = sym_xerr_cam_status(DID_OK,
275 cp->sv_xerr_status);
276 drv_status = DRIVER_SENSE;
277 /*
278 * Bounce back the sense data to user.
279 */
280 memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
281 memcpy(cmd->sense_buffer, cp->sns_bbuf,
282 min(sizeof(cmd->sense_buffer),
283 (size_t)SYM_SNS_BBUF_LEN));
284 #if 0
285 /*
286 * If the device reports a UNIT ATTENTION condition
287 * due to a RESET condition, we should consider all
288 * disconnect CCBs for this unit as aborted.
289 */
290 if (1) {
291 u_char *p;
292 p = (u_char *) cmd->sense_data;
293 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
294 sym_clear_tasks(np, DID_ABORT,
295 cp->target,cp->lun, -1);
296 }
297 #endif
298 } else {
299 /*
300 * Error return from our internal request sense. This
301 * is bad: we must clear the contingent allegiance
302 * condition otherwise the device will always return
303 * BUSY. Use a big stick.
304 */
305 sym_reset_scsi_target(np, cmd->device->id);
306 cam_status = DID_ERROR;
307 }
308 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
309 cam_status = DID_OK;
310 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
311 cam_status = DID_NO_CONNECT;
312 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
313 cam_status = DID_ERROR;
314 else { /* Extended error */
315 if (sym_verbose) {
316 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
317 cp->host_status, cp->ssss_status,
318 cp->xerr_status);
319 }
320 /*
321 * Set the most appropriate value for CAM status.
322 */
323 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
324 }
325 cmd->resid = resid;
326 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
327 }
328
329
330 /*
331 * Build the scatter/gather array for an I/O.
332 */
333
334 static int sym_scatter_no_sglist(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
335 {
336 struct sym_tblmove *data = &cp->phys.data[SYM_CONF_MAX_SG-1];
337 int segment;
338 unsigned int len = cmd->request_bufflen;
339
340 if (len) {
341 dma_addr_t baddr = map_scsi_single_data(np, cmd);
342 if (baddr) {
343 if (len & 1) {
344 struct sym_tcb *tp = &np->target[cp->target];
345 if (tp->head.wval & EWS) {
346 len++;
347 cp->odd_byte_adjustment++;
348 }
349 }
350 cp->data_len = len;
351 sym_build_sge(np, data, baddr, len);
352 segment = 1;
353 } else {
354 segment = -2;
355 }
356 } else {
357 segment = 0;
358 }
359
360 return segment;
361 }
362
363 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
364 {
365 int segment;
366 int use_sg = (int) cmd->use_sg;
367
368 cp->data_len = 0;
369
370 if (!use_sg)
371 segment = sym_scatter_no_sglist(np, cp, cmd);
372 else if ((use_sg = map_scsi_sg_data(np, cmd)) > 0) {
373 struct scatterlist *scatter = (struct scatterlist *)cmd->request_buffer;
374 struct sym_tcb *tp = &np->target[cp->target];
375 struct sym_tblmove *data;
376
377 if (use_sg > SYM_CONF_MAX_SG) {
378 unmap_scsi_data(np, cmd);
379 return -1;
380 }
381
382 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
383
384 for (segment = 0; segment < use_sg; segment++) {
385 dma_addr_t baddr = sg_dma_address(&scatter[segment]);
386 unsigned int len = sg_dma_len(&scatter[segment]);
387
388 if ((len & 1) && (tp->head.wval & EWS)) {
389 len++;
390 cp->odd_byte_adjustment++;
391 }
392
393 sym_build_sge(np, &data[segment], baddr, len);
394 cp->data_len += len;
395 }
396 } else {
397 segment = -2;
398 }
399
400 return segment;
401 }
402
403 /*
404 * Queue a SCSI command.
405 */
406 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
407 {
408 struct scsi_device *sdev = cmd->device;
409 struct sym_tcb *tp;
410 struct sym_lcb *lp;
411 struct sym_ccb *cp;
412 int order;
413
414 /*
415 * Minimal checkings, so that we will not
416 * go outside our tables.
417 */
418 if (sdev->id == np->myaddr) {
419 sym_xpt_done2(np, cmd, DID_NO_CONNECT);
420 return 0;
421 }
422
423 /*
424 * Retrieve the target descriptor.
425 */
426 tp = &np->target[sdev->id];
427
428 /*
429 * Select tagged/untagged.
430 */
431 lp = sym_lp(tp, sdev->lun);
432 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
433
434 /*
435 * Queue the SCSI IO.
436 */
437 cp = sym_get_ccb(np, cmd, order);
438 if (!cp)
439 return 1; /* Means resource shortage */
440 sym_queue_scsiio(np, cmd, cp);
441 return 0;
442 }
443
444 /*
445 * Setup buffers and pointers that address the CDB.
446 */
447 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
448 {
449 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
450
451 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
452 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
453
454 return 0;
455 }
456
457 /*
458 * Setup pointers that address the data and start the I/O.
459 */
460 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
461 {
462 u32 lastp, goalp;
463 int dir;
464
465 /*
466 * Build the CDB.
467 */
468 if (sym_setup_cdb(np, cmd, cp))
469 goto out_abort;
470
471 /*
472 * No direction means no data.
473 */
474 dir = cmd->sc_data_direction;
475 if (dir != DMA_NONE) {
476 cp->segments = sym_scatter(np, cp, cmd);
477 if (cp->segments < 0) {
478 sym_set_cam_status(cmd, DID_ERROR);
479 goto out_abort;
480 }
481
482 /*
483 * No segments means no data.
484 */
485 if (!cp->segments)
486 dir = DMA_NONE;
487 } else {
488 cp->data_len = 0;
489 cp->segments = 0;
490 }
491
492 /*
493 * Set the data pointer.
494 */
495 switch (dir) {
496 case DMA_BIDIRECTIONAL:
497 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np));
498 sym_set_cam_status(cmd, DID_ERROR);
499 goto out_abort;
500 case DMA_TO_DEVICE:
501 goalp = SCRIPTA_BA(np, data_out2) + 8;
502 lastp = goalp - 8 - (cp->segments * (2*4));
503 break;
504 case DMA_FROM_DEVICE:
505 cp->host_flags |= HF_DATA_IN;
506 goalp = SCRIPTA_BA(np, data_in2) + 8;
507 lastp = goalp - 8 - (cp->segments * (2*4));
508 break;
509 case DMA_NONE:
510 default:
511 lastp = goalp = SCRIPTB_BA(np, no_data);
512 break;
513 }
514
515 /*
516 * Set all pointers values needed by SCRIPTS.
517 */
518 cp->phys.head.lastp = cpu_to_scr(lastp);
519 cp->phys.head.savep = cpu_to_scr(lastp);
520 cp->startp = cp->phys.head.savep;
521 cp->goalp = cpu_to_scr(goalp);
522
523 /*
524 * When `#ifed 1', the code below makes the driver
525 * panic on the first attempt to write to a SCSI device.
526 * It is the first test we want to do after a driver
527 * change that does not seem obviously safe. :)
528 */
529 #if 0
530 switch (cp->cdb_buf[0]) {
531 case 0x0A: case 0x2A: case 0xAA:
532 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
533 break;
534 default:
535 break;
536 }
537 #endif
538
539 /*
540 * activate this job.
541 */
542 sym_put_start_queue(np, cp);
543 return 0;
544
545 out_abort:
546 sym_free_ccb(np, cp);
547 sym_xpt_done(np, cmd);
548 return 0;
549 }
550
551
552 /*
553 * timer daemon.
554 *
555 * Misused to keep the driver running when
556 * interrupts are not configured correctly.
557 */
558 static void sym_timer(struct sym_hcb *np)
559 {
560 unsigned long thistime = jiffies;
561
562 /*
563 * Restart the timer.
564 */
565 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
566 add_timer(&np->s.timer);
567
568 /*
569 * If we are resetting the ncr, wait for settle_time before
570 * clearing it. Then command processing will be resumed.
571 */
572 if (np->s.settle_time_valid) {
573 if (time_before_eq(np->s.settle_time, thistime)) {
574 if (sym_verbose >= 2 )
575 printk("%s: command processing resumed\n",
576 sym_name(np));
577 np->s.settle_time_valid = 0;
578 }
579 return;
580 }
581
582 /*
583 * Nothing to do for now, but that may come.
584 */
585 if (np->s.lasttime + 4*HZ < thistime) {
586 np->s.lasttime = thistime;
587 }
588
589 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
590 /*
591 * Some way-broken PCI bridges may lead to
592 * completions being lost when the clearing
593 * of the INTFLY flag by the CPU occurs
594 * concurrently with the chip raising this flag.
595 * If this ever happen, lost completions will
596 * be reaped here.
597 */
598 sym_wakeup_done(np);
599 #endif
600 }
601
602
603 /*
604 * PCI BUS error handler.
605 */
606 void sym_log_bus_error(struct sym_hcb *np)
607 {
608 u_short pci_sts;
609 pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts);
610 if (pci_sts & 0xf900) {
611 pci_write_config_word(np->s.device, PCI_STATUS, pci_sts);
612 printf("%s: PCI STATUS = 0x%04x\n",
613 sym_name(np), pci_sts & 0xf900);
614 }
615 }
616
617 /*
618 * queuecommand method. Entered with the host adapter lock held and
619 * interrupts disabled.
620 */
621 static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
622 void (*done)(struct scsi_cmnd *))
623 {
624 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
625 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
626 int sts = 0;
627
628 cmd->scsi_done = done;
629 memset(ucp, 0, sizeof(*ucp));
630
631 /*
632 * Shorten our settle_time if needed for
633 * this command not to time out.
634 */
635 if (np->s.settle_time_valid && cmd->timeout_per_command) {
636 unsigned long tlimit = jiffies + cmd->timeout_per_command;
637 tlimit -= SYM_CONF_TIMER_INTERVAL*2;
638 if (time_after(np->s.settle_time, tlimit)) {
639 np->s.settle_time = tlimit;
640 }
641 }
642
643 if (np->s.settle_time_valid)
644 return SCSI_MLQUEUE_HOST_BUSY;
645
646 sts = sym_queue_command(np, cmd);
647 if (sts)
648 return SCSI_MLQUEUE_HOST_BUSY;
649 return 0;
650 }
651
652 /*
653 * Linux entry point of the interrupt handler.
654 */
655 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id, struct pt_regs * regs)
656 {
657 unsigned long flags;
658 struct sym_hcb *np = (struct sym_hcb *)dev_id;
659
660 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
661
662 spin_lock_irqsave(np->s.host->host_lock, flags);
663 sym_interrupt(np);
664 spin_unlock_irqrestore(np->s.host->host_lock, flags);
665
666 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
667
668 return IRQ_HANDLED;
669 }
670
671 /*
672 * Linux entry point of the timer handler
673 */
674 static void sym53c8xx_timer(unsigned long npref)
675 {
676 struct sym_hcb *np = (struct sym_hcb *)npref;
677 unsigned long flags;
678
679 spin_lock_irqsave(np->s.host->host_lock, flags);
680 sym_timer(np);
681 spin_unlock_irqrestore(np->s.host->host_lock, flags);
682 }
683
684
685 /*
686 * What the eh thread wants us to perform.
687 */
688 #define SYM_EH_ABORT 0
689 #define SYM_EH_DEVICE_RESET 1
690 #define SYM_EH_BUS_RESET 2
691 #define SYM_EH_HOST_RESET 3
692
693 /*
694 * What we will do regarding the involved SCSI command.
695 */
696 #define SYM_EH_DO_IGNORE 0
697 #define SYM_EH_DO_WAIT 2
698
699 /*
700 * scsi_done() alias when error recovery is in progress.
701 */
702 static void sym_eh_done(struct scsi_cmnd *cmd)
703 {
704 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
705 BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
706
707 cmd->scsi_done = ucmd->old_done;
708
709 if (ucmd->to_do == SYM_EH_DO_WAIT)
710 complete(ucmd->eh_done);
711 }
712
713 /*
714 * Generic method for our eh processing.
715 * The 'op' argument tells what we have to do.
716 */
717 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
718 {
719 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
720 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
721 struct Scsi_Host *host = cmd->device->host;
722 SYM_QUEHEAD *qp;
723 int to_do = SYM_EH_DO_IGNORE;
724 int sts = -1;
725 struct completion eh_done;
726
727 dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname);
728
729 spin_lock_irq(host->host_lock);
730 /* This one is queued in some place -> to wait for completion */
731 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
732 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
733 if (cp->cmd == cmd) {
734 to_do = SYM_EH_DO_WAIT;
735 break;
736 }
737 }
738
739 if (to_do == SYM_EH_DO_WAIT) {
740 init_completion(&eh_done);
741 ucmd->old_done = cmd->scsi_done;
742 ucmd->eh_done = &eh_done;
743 wmb();
744 cmd->scsi_done = sym_eh_done;
745 }
746
747 /* Try to proceed the operation we have been asked for */
748 sts = -1;
749 switch(op) {
750 case SYM_EH_ABORT:
751 sts = sym_abort_scsiio(np, cmd, 1);
752 break;
753 case SYM_EH_DEVICE_RESET:
754 sts = sym_reset_scsi_target(np, cmd->device->id);
755 break;
756 case SYM_EH_BUS_RESET:
757 sym_reset_scsi_bus(np, 1);
758 sts = 0;
759 break;
760 case SYM_EH_HOST_RESET:
761 sym_reset_scsi_bus(np, 0);
762 sym_start_up (np, 1);
763 sts = 0;
764 break;
765 default:
766 break;
767 }
768
769 /* On error, restore everything and cross fingers :) */
770 if (sts) {
771 cmd->scsi_done = ucmd->old_done;
772 to_do = SYM_EH_DO_IGNORE;
773 }
774
775 ucmd->to_do = to_do;
776 spin_unlock_irq(host->host_lock);
777
778 if (to_do == SYM_EH_DO_WAIT) {
779 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
780 ucmd->to_do = SYM_EH_DO_IGNORE;
781 wmb();
782 sts = -2;
783 }
784 }
785 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
786 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
787 return sts ? SCSI_FAILED : SCSI_SUCCESS;
788 }
789
790
791 /*
792 * Error handlers called from the eh thread (one thread per HBA).
793 */
794 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
795 {
796 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
797 }
798
799 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
800 {
801 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
802 }
803
804 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
805 {
806 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
807 }
808
809 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
810 {
811 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
812 }
813
814 /*
815 * Tune device queuing depth, according to various limits.
816 */
817 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
818 {
819 struct sym_lcb *lp = sym_lp(tp, lun);
820 u_short oldtags;
821
822 if (!lp)
823 return;
824
825 oldtags = lp->s.reqtags;
826
827 if (reqtags > lp->s.scdev_depth)
828 reqtags = lp->s.scdev_depth;
829
830 lp->s.reqtags = reqtags;
831
832 if (reqtags != oldtags) {
833 dev_info(&tp->starget->dev,
834 "tagged command queuing %s, command queue depth %d.\n",
835 lp->s.reqtags ? "enabled" : "disabled", reqtags);
836 }
837 }
838
839 /*
840 * Linux select queue depths function
841 */
842 #define DEF_DEPTH (sym_driver_setup.max_tag)
843 #define ALL_TARGETS -2
844 #define NO_TARGET -1
845 #define ALL_LUNS -2
846 #define NO_LUN -1
847
848 static int device_queue_depth(struct sym_hcb *np, int target, int lun)
849 {
850 int c, h, t, u, v;
851 char *p = sym_driver_setup.tag_ctrl;
852 char *ep;
853
854 h = -1;
855 t = NO_TARGET;
856 u = NO_LUN;
857 while ((c = *p++) != 0) {
858 v = simple_strtoul(p, &ep, 0);
859 switch(c) {
860 case '/':
861 ++h;
862 t = ALL_TARGETS;
863 u = ALL_LUNS;
864 break;
865 case 't':
866 if (t != target)
867 t = (target == v) ? v : NO_TARGET;
868 u = ALL_LUNS;
869 break;
870 case 'u':
871 if (u != lun)
872 u = (lun == v) ? v : NO_LUN;
873 break;
874 case 'q':
875 if (h == np->s.unit &&
876 (t == ALL_TARGETS || t == target) &&
877 (u == ALL_LUNS || u == lun))
878 return v;
879 break;
880 case '-':
881 t = ALL_TARGETS;
882 u = ALL_LUNS;
883 break;
884 default:
885 break;
886 }
887 p = ep;
888 }
889 return DEF_DEPTH;
890 }
891
892 static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
893 {
894 struct sym_hcb *np = sym_get_hcb(sdev->host);
895 struct sym_tcb *tp = &np->target[sdev->id];
896 struct sym_lcb *lp;
897
898 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
899 return -ENXIO;
900
901 tp->starget = sdev->sdev_target;
902 /*
903 * Fail the device init if the device is flagged NOSCAN at BOOT in
904 * the NVRAM. This may speed up boot and maintain coherency with
905 * BIOS device numbering. Clearing the flag allows the user to
906 * rescan skipped devices later. We also return an error for
907 * devices not flagged for SCAN LUNS in the NVRAM since some single
908 * lun devices behave badly when asked for a non zero LUN.
909 */
910
911 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
912 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
913 starget_printk(KERN_INFO, tp->starget,
914 "Scan at boot disabled in NVRAM\n");
915 return -ENXIO;
916 }
917
918 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
919 if (sdev->lun != 0)
920 return -ENXIO;
921 starget_printk(KERN_INFO, tp->starget,
922 "Multiple LUNs disabled in NVRAM\n");
923 }
924
925 lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
926 if (!lp)
927 return -ENOMEM;
928
929 spi_min_period(tp->starget) = tp->usr_period;
930 spi_max_width(tp->starget) = tp->usr_width;
931
932 return 0;
933 }
934
935 /*
936 * Linux entry point for device queue sizing.
937 */
938 static int sym53c8xx_slave_configure(struct scsi_device *sdev)
939 {
940 struct sym_hcb *np = sym_get_hcb(sdev->host);
941 struct sym_tcb *tp = &np->target[sdev->id];
942 struct sym_lcb *lp = sym_lp(tp, sdev->lun);
943 int reqtags, depth_to_use;
944
945 /*
946 * Get user flags.
947 */
948 lp->curr_flags = lp->user_flags;
949
950 /*
951 * Select queue depth from driver setup.
952 * Donnot use more than configured by user.
953 * Use at least 2.
954 * Donnot use more than our maximum.
955 */
956 reqtags = device_queue_depth(np, sdev->id, sdev->lun);
957 if (reqtags > tp->usrtags)
958 reqtags = tp->usrtags;
959 if (!sdev->tagged_supported)
960 reqtags = 0;
961 #if 1 /* Avoid to locally queue commands for no good reasons */
962 if (reqtags > SYM_CONF_MAX_TAG)
963 reqtags = SYM_CONF_MAX_TAG;
964 depth_to_use = (reqtags ? reqtags : 2);
965 #else
966 depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2);
967 #endif
968 scsi_adjust_queue_depth(sdev,
969 (sdev->tagged_supported ?
970 MSG_SIMPLE_TAG : 0),
971 depth_to_use);
972 lp->s.scdev_depth = depth_to_use;
973 sym_tune_dev_queuing(tp, sdev->lun, reqtags);
974
975 if (!spi_initial_dv(sdev->sdev_target))
976 spi_dv_device(sdev);
977
978 return 0;
979 }
980
981 static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
982 {
983 struct sym_hcb *np = sym_get_hcb(sdev->host);
984 struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun);
985
986 if (lp->itlq_tbl)
987 sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL");
988 kfree(lp->cb_tags);
989 sym_mfree_dma(lp, sizeof(*lp), "LCB");
990 }
991
992 /*
993 * Linux entry point for info() function
994 */
995 static const char *sym53c8xx_info (struct Scsi_Host *host)
996 {
997 return SYM_DRIVER_NAME;
998 }
999
1000
1001 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1002 /*
1003 * Proc file system stuff
1004 *
1005 * A read operation returns adapter information.
1006 * A write operation is a control command.
1007 * The string is parsed in the driver code and the command is passed
1008 * to the sym_usercmd() function.
1009 */
1010
1011 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1012
1013 struct sym_usrcmd {
1014 u_long target;
1015 u_long lun;
1016 u_long data;
1017 u_long cmd;
1018 };
1019
1020 #define UC_SETSYNC 10
1021 #define UC_SETTAGS 11
1022 #define UC_SETDEBUG 12
1023 #define UC_SETWIDE 14
1024 #define UC_SETFLAG 15
1025 #define UC_SETVERBOSE 17
1026 #define UC_RESETDEV 18
1027 #define UC_CLEARDEV 19
1028
1029 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
1030 {
1031 struct sym_tcb *tp;
1032 int t, l;
1033
1034 switch (uc->cmd) {
1035 case 0: return;
1036
1037 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1038 case UC_SETDEBUG:
1039 sym_debug_flags = uc->data;
1040 break;
1041 #endif
1042 case UC_SETVERBOSE:
1043 np->verbose = uc->data;
1044 break;
1045 default:
1046 /*
1047 * We assume that other commands apply to targets.
1048 * This should always be the case and avoid the below
1049 * 4 lines to be repeated 6 times.
1050 */
1051 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
1052 if (!((uc->target >> t) & 1))
1053 continue;
1054 tp = &np->target[t];
1055
1056 switch (uc->cmd) {
1057
1058 case UC_SETSYNC:
1059 if (!uc->data || uc->data >= 255) {
1060 tp->tgoal.iu = tp->tgoal.dt =
1061 tp->tgoal.qas = 0;
1062 tp->tgoal.offset = 0;
1063 } else if (uc->data <= 9 && np->minsync_dt) {
1064 if (uc->data < np->minsync_dt)
1065 uc->data = np->minsync_dt;
1066 tp->tgoal.iu = tp->tgoal.dt =
1067 tp->tgoal.qas = 1;
1068 tp->tgoal.width = 1;
1069 tp->tgoal.period = uc->data;
1070 tp->tgoal.offset = np->maxoffs_dt;
1071 } else {
1072 if (uc->data < np->minsync)
1073 uc->data = np->minsync;
1074 tp->tgoal.iu = tp->tgoal.dt =
1075 tp->tgoal.qas = 0;
1076 tp->tgoal.period = uc->data;
1077 tp->tgoal.offset = np->maxoffs;
1078 }
1079 tp->tgoal.check_nego = 1;
1080 break;
1081 case UC_SETWIDE:
1082 tp->tgoal.width = uc->data ? 1 : 0;
1083 tp->tgoal.check_nego = 1;
1084 break;
1085 case UC_SETTAGS:
1086 for (l = 0; l < SYM_CONF_MAX_LUN; l++)
1087 sym_tune_dev_queuing(tp, l, uc->data);
1088 break;
1089 case UC_RESETDEV:
1090 tp->to_reset = 1;
1091 np->istat_sem = SEM;
1092 OUTB(np, nc_istat, SIGP|SEM);
1093 break;
1094 case UC_CLEARDEV:
1095 for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
1096 struct sym_lcb *lp = sym_lp(tp, l);
1097 if (lp) lp->to_clear = 1;
1098 }
1099 np->istat_sem = SEM;
1100 OUTB(np, nc_istat, SIGP|SEM);
1101 break;
1102 case UC_SETFLAG:
1103 tp->usrflags = uc->data;
1104 break;
1105 }
1106 }
1107 break;
1108 }
1109 }
1110
1111 static int skip_spaces(char *ptr, int len)
1112 {
1113 int cnt, c;
1114
1115 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
1116
1117 return (len - cnt);
1118 }
1119
1120 static int get_int_arg(char *ptr, int len, u_long *pv)
1121 {
1122 char *end;
1123
1124 *pv = simple_strtoul(ptr, &end, 10);
1125 return (end - ptr);
1126 }
1127
1128 static int is_keyword(char *ptr, int len, char *verb)
1129 {
1130 int verb_len = strlen(verb);
1131
1132 if (len >= verb_len && !memcmp(verb, ptr, verb_len))
1133 return verb_len;
1134 else
1135 return 0;
1136 }
1137
1138 #define SKIP_SPACES(ptr, len) \
1139 if ((arg_len = skip_spaces(ptr, len)) < 1) \
1140 return -EINVAL; \
1141 ptr += arg_len; len -= arg_len;
1142
1143 #define GET_INT_ARG(ptr, len, v) \
1144 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1145 return -EINVAL; \
1146 ptr += arg_len; len -= arg_len;
1147
1148
1149 /*
1150 * Parse a control command
1151 */
1152
1153 static int sym_user_command(struct sym_hcb *np, char *buffer, int length)
1154 {
1155 char *ptr = buffer;
1156 int len = length;
1157 struct sym_usrcmd cmd, *uc = &cmd;
1158 int arg_len;
1159 u_long target;
1160
1161 memset(uc, 0, sizeof(*uc));
1162
1163 if (len > 0 && ptr[len-1] == '\n')
1164 --len;
1165
1166 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
1167 uc->cmd = UC_SETSYNC;
1168 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
1169 uc->cmd = UC_SETTAGS;
1170 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
1171 uc->cmd = UC_SETVERBOSE;
1172 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
1173 uc->cmd = UC_SETWIDE;
1174 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1175 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
1176 uc->cmd = UC_SETDEBUG;
1177 #endif
1178 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
1179 uc->cmd = UC_SETFLAG;
1180 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
1181 uc->cmd = UC_RESETDEV;
1182 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
1183 uc->cmd = UC_CLEARDEV;
1184 else
1185 arg_len = 0;
1186
1187 #ifdef DEBUG_PROC_INFO
1188 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
1189 #endif
1190
1191 if (!arg_len)
1192 return -EINVAL;
1193 ptr += arg_len; len -= arg_len;
1194
1195 switch(uc->cmd) {
1196 case UC_SETSYNC:
1197 case UC_SETTAGS:
1198 case UC_SETWIDE:
1199 case UC_SETFLAG:
1200 case UC_RESETDEV:
1201 case UC_CLEARDEV:
1202 SKIP_SPACES(ptr, len);
1203 if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
1204 ptr += arg_len; len -= arg_len;
1205 uc->target = ~0;
1206 } else {
1207 GET_INT_ARG(ptr, len, target);
1208 uc->target = (1<<target);
1209 #ifdef DEBUG_PROC_INFO
1210 printk("sym_user_command: target=%ld\n", target);
1211 #endif
1212 }
1213 break;
1214 }
1215
1216 switch(uc->cmd) {
1217 case UC_SETVERBOSE:
1218 case UC_SETSYNC:
1219 case UC_SETTAGS:
1220 case UC_SETWIDE:
1221 SKIP_SPACES(ptr, len);
1222 GET_INT_ARG(ptr, len, uc->data);
1223 #ifdef DEBUG_PROC_INFO
1224 printk("sym_user_command: data=%ld\n", uc->data);
1225 #endif
1226 break;
1227 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1228 case UC_SETDEBUG:
1229 while (len > 0) {
1230 SKIP_SPACES(ptr, len);
1231 if ((arg_len = is_keyword(ptr, len, "alloc")))
1232 uc->data |= DEBUG_ALLOC;
1233 else if ((arg_len = is_keyword(ptr, len, "phase")))
1234 uc->data |= DEBUG_PHASE;
1235 else if ((arg_len = is_keyword(ptr, len, "queue")))
1236 uc->data |= DEBUG_QUEUE;
1237 else if ((arg_len = is_keyword(ptr, len, "result")))
1238 uc->data |= DEBUG_RESULT;
1239 else if ((arg_len = is_keyword(ptr, len, "scatter")))
1240 uc->data |= DEBUG_SCATTER;
1241 else if ((arg_len = is_keyword(ptr, len, "script")))
1242 uc->data |= DEBUG_SCRIPT;
1243 else if ((arg_len = is_keyword(ptr, len, "tiny")))
1244 uc->data |= DEBUG_TINY;
1245 else if ((arg_len = is_keyword(ptr, len, "timing")))
1246 uc->data |= DEBUG_TIMING;
1247 else if ((arg_len = is_keyword(ptr, len, "nego")))
1248 uc->data |= DEBUG_NEGO;
1249 else if ((arg_len = is_keyword(ptr, len, "tags")))
1250 uc->data |= DEBUG_TAGS;
1251 else if ((arg_len = is_keyword(ptr, len, "pointer")))
1252 uc->data |= DEBUG_POINTER;
1253 else
1254 return -EINVAL;
1255 ptr += arg_len; len -= arg_len;
1256 }
1257 #ifdef DEBUG_PROC_INFO
1258 printk("sym_user_command: data=%ld\n", uc->data);
1259 #endif
1260 break;
1261 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1262 case UC_SETFLAG:
1263 while (len > 0) {
1264 SKIP_SPACES(ptr, len);
1265 if ((arg_len = is_keyword(ptr, len, "no_disc")))
1266 uc->data &= ~SYM_DISC_ENABLED;
1267 else
1268 return -EINVAL;
1269 ptr += arg_len; len -= arg_len;
1270 }
1271 break;
1272 default:
1273 break;
1274 }
1275
1276 if (len)
1277 return -EINVAL;
1278 else {
1279 unsigned long flags;
1280
1281 spin_lock_irqsave(np->s.host->host_lock, flags);
1282 sym_exec_user_command (np, uc);
1283 spin_unlock_irqrestore(np->s.host->host_lock, flags);
1284 }
1285 return length;
1286 }
1287
1288 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1289
1290
1291 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1292 /*
1293 * Informations through the proc file system.
1294 */
1295 struct info_str {
1296 char *buffer;
1297 int length;
1298 int offset;
1299 int pos;
1300 };
1301
1302 static void copy_mem_info(struct info_str *info, char *data, int len)
1303 {
1304 if (info->pos + len > info->length)
1305 len = info->length - info->pos;
1306
1307 if (info->pos + len < info->offset) {
1308 info->pos += len;
1309 return;
1310 }
1311 if (info->pos < info->offset) {
1312 data += (info->offset - info->pos);
1313 len -= (info->offset - info->pos);
1314 }
1315
1316 if (len > 0) {
1317 memcpy(info->buffer + info->pos, data, len);
1318 info->pos += len;
1319 }
1320 }
1321
1322 static int copy_info(struct info_str *info, char *fmt, ...)
1323 {
1324 va_list args;
1325 char buf[81];
1326 int len;
1327
1328 va_start(args, fmt);
1329 len = vsprintf(buf, fmt, args);
1330 va_end(args);
1331
1332 copy_mem_info(info, buf, len);
1333 return len;
1334 }
1335
1336 /*
1337 * Copy formatted information into the input buffer.
1338 */
1339 static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len)
1340 {
1341 struct info_str info;
1342
1343 info.buffer = ptr;
1344 info.length = len;
1345 info.offset = offset;
1346 info.pos = 0;
1347
1348 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, "
1349 "revision id 0x%x\n",
1350 np->s.chip_name, np->device_id, np->revision_id);
1351 copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n",
1352 pci_name(np->s.device), IRQ_PRM(np->s.irq));
1353 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n",
1354 (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
1355 np->maxwide ? "Wide" : "Narrow",
1356 np->minsync_dt ? ", DT capable" : "");
1357
1358 copy_info(&info, "Max. started commands %d, "
1359 "max. commands per LUN %d\n",
1360 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
1361
1362 return info.pos > info.offset? info.pos - info.offset : 0;
1363 }
1364 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1365
1366 /*
1367 * Entry point of the scsi proc fs of the driver.
1368 * - func = 0 means read (returns adapter infos)
1369 * - func = 1 means write (not yet merget from sym53c8xx)
1370 */
1371 static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer,
1372 char **start, off_t offset, int length, int func)
1373 {
1374 struct sym_hcb *np = sym_get_hcb(host);
1375 int retv;
1376
1377 if (func) {
1378 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1379 retv = sym_user_command(np, buffer, length);
1380 #else
1381 retv = -EINVAL;
1382 #endif
1383 } else {
1384 if (start)
1385 *start = buffer;
1386 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1387 retv = sym_host_info(np, buffer, offset, length);
1388 #else
1389 retv = -EINVAL;
1390 #endif
1391 }
1392
1393 return retv;
1394 }
1395 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1396
1397 /*
1398 * Free controller resources.
1399 */
1400 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev)
1401 {
1402 /*
1403 * Free O/S specific resources.
1404 */
1405 if (np->s.irq)
1406 free_irq(np->s.irq, np);
1407 if (np->s.ioaddr)
1408 pci_iounmap(pdev, np->s.ioaddr);
1409 if (np->s.ramaddr)
1410 pci_iounmap(pdev, np->s.ramaddr);
1411 /*
1412 * Free O/S independent resources.
1413 */
1414 sym_hcb_free(np);
1415
1416 sym_mfree_dma(np, sizeof(*np), "HCB");
1417 }
1418
1419 /*
1420 * Ask/tell the system about DMA addressing.
1421 */
1422 static int sym_setup_bus_dma_mask(struct sym_hcb *np)
1423 {
1424 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1425 #if SYM_CONF_DMA_ADDRESSING_MODE == 1
1426 #define DMA_DAC_MASK DMA_40BIT_MASK
1427 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1428 #define DMA_DAC_MASK DMA_64BIT_MASK
1429 #endif
1430 if ((np->features & FE_DAC) &&
1431 !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) {
1432 np->use_dac = 1;
1433 return 0;
1434 }
1435 #endif
1436
1437 if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK))
1438 return 0;
1439
1440 printf_warning("%s: No suitable DMA available\n", sym_name(np));
1441 return -1;
1442 }
1443
1444 /*
1445 * Host attach and initialisations.
1446 *
1447 * Allocate host data and ncb structure.
1448 * Remap MMIO region.
1449 * Do chip initialization.
1450 * If all is OK, install interrupt handling and
1451 * start the timer daemon.
1452 */
1453 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt,
1454 int unit, struct sym_device *dev)
1455 {
1456 struct host_data *host_data;
1457 struct sym_hcb *np = NULL;
1458 struct Scsi_Host *instance = NULL;
1459 struct pci_dev *pdev = dev->pdev;
1460 unsigned long flags;
1461 struct sym_fw *fw;
1462
1463 printk(KERN_INFO
1464 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n",
1465 unit, dev->chip.name, dev->chip.revision_id,
1466 pci_name(pdev), IRQ_PRM(pdev->irq));
1467
1468 /*
1469 * Get the firmware for this chip.
1470 */
1471 fw = sym_find_firmware(&dev->chip);
1472 if (!fw)
1473 goto attach_failed;
1474
1475 /*
1476 * Allocate host_data structure
1477 */
1478 instance = scsi_host_alloc(tpnt, sizeof(*host_data));
1479 if (!instance)
1480 goto attach_failed;
1481 host_data = (struct host_data *) instance->hostdata;
1482
1483 /*
1484 * Allocate immediately the host control block,
1485 * since we are only expecting to succeed. :)
1486 * We keep track in the HCB of all the resources that
1487 * are to be released on error.
1488 */
1489 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
1490 if (!np)
1491 goto attach_failed;
1492 np->s.device = pdev;
1493 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
1494 host_data->ncb = np;
1495 np->s.host = instance;
1496
1497 pci_set_drvdata(pdev, np);
1498
1499 /*
1500 * Copy some useful infos to the HCB.
1501 */
1502 np->hcb_ba = vtobus(np);
1503 np->verbose = sym_driver_setup.verbose;
1504 np->s.device = pdev;
1505 np->s.unit = unit;
1506 np->device_id = dev->chip.device_id;
1507 np->revision_id = dev->chip.revision_id;
1508 np->features = dev->chip.features;
1509 np->clock_divn = dev->chip.nr_divisor;
1510 np->maxoffs = dev->chip.offset_max;
1511 np->maxburst = dev->chip.burst_max;
1512 np->myaddr = dev->host_id;
1513
1514 /*
1515 * Edit its name.
1516 */
1517 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
1518 sprintf(np->s.inst_name, "sym%d", np->s.unit);
1519
1520 if (sym_setup_bus_dma_mask(np))
1521 goto attach_failed;
1522
1523 /*
1524 * Try to map the controller chip to
1525 * virtual and physical memory.
1526 */
1527 np->mmio_ba = (u32)dev->mmio_base;
1528 np->s.ioaddr = dev->s.ioaddr;
1529 np->s.ramaddr = dev->s.ramaddr;
1530 np->s.io_ws = (np->features & FE_IO256) ? 256 : 128;
1531
1532 /*
1533 * Map on-chip RAM if present and supported.
1534 */
1535 if (!(np->features & FE_RAM))
1536 dev->ram_base = 0;
1537 if (dev->ram_base) {
1538 np->ram_ba = (u32)dev->ram_base;
1539 np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096;
1540 }
1541
1542 if (sym_hcb_attach(instance, fw, dev->nvram))
1543 goto attach_failed;
1544
1545 /*
1546 * Install the interrupt handler.
1547 * If we synchonize the C code with SCRIPTS on interrupt,
1548 * we do not want to share the INTR line at all.
1549 */
1550 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, np)) {
1551 printf_err("%s: request irq %d failure\n",
1552 sym_name(np), pdev->irq);
1553 goto attach_failed;
1554 }
1555 np->s.irq = pdev->irq;
1556
1557 /*
1558 * After SCSI devices have been opened, we cannot
1559 * reset the bus safely, so we do it here.
1560 */
1561 spin_lock_irqsave(instance->host_lock, flags);
1562 if (sym_reset_scsi_bus(np, 0))
1563 goto reset_failed;
1564
1565 /*
1566 * Start the SCRIPTS.
1567 */
1568 sym_start_up (np, 1);
1569
1570 /*
1571 * Start the timer daemon
1572 */
1573 init_timer(&np->s.timer);
1574 np->s.timer.data = (unsigned long) np;
1575 np->s.timer.function = sym53c8xx_timer;
1576 np->s.lasttime=0;
1577 sym_timer (np);
1578
1579 /*
1580 * Fill Linux host instance structure
1581 * and return success.
1582 */
1583 instance->max_channel = 0;
1584 instance->this_id = np->myaddr;
1585 instance->max_id = np->maxwide ? 16 : 8;
1586 instance->max_lun = SYM_CONF_MAX_LUN;
1587 instance->unique_id = pci_resource_start(pdev, 0);
1588 instance->cmd_per_lun = SYM_CONF_MAX_TAG;
1589 instance->can_queue = (SYM_CONF_MAX_START-2);
1590 instance->sg_tablesize = SYM_CONF_MAX_SG;
1591 instance->max_cmd_len = 16;
1592 BUG_ON(sym2_transport_template == NULL);
1593 instance->transportt = sym2_transport_template;
1594
1595 spin_unlock_irqrestore(instance->host_lock, flags);
1596
1597 return instance;
1598
1599 reset_failed:
1600 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1601 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
1602 spin_unlock_irqrestore(instance->host_lock, flags);
1603 attach_failed:
1604 if (!instance)
1605 return NULL;
1606 printf_info("%s: giving up ...\n", sym_name(np));
1607 if (np)
1608 sym_free_resources(np, pdev);
1609 scsi_host_put(instance);
1610
1611 return NULL;
1612 }
1613
1614
1615 /*
1616 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1617 */
1618 #if SYM_CONF_NVRAM_SUPPORT
1619 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1620 {
1621 devp->nvram = nvp;
1622 devp->device_id = devp->chip.device_id;
1623 nvp->type = 0;
1624
1625 sym_read_nvram(devp, nvp);
1626 }
1627 #else
1628 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1629 {
1630 }
1631 #endif /* SYM_CONF_NVRAM_SUPPORT */
1632
1633 static int __devinit sym_check_supported(struct sym_device *device)
1634 {
1635 struct sym_chip *chip;
1636 struct pci_dev *pdev = device->pdev;
1637 u_char revision;
1638 unsigned long io_port = pci_resource_start(pdev, 0);
1639 int i;
1640
1641 /*
1642 * If user excluded this chip, do not initialize it.
1643 * I hate this code so much. Must kill it.
1644 */
1645 if (io_port) {
1646 for (i = 0 ; i < 8 ; i++) {
1647 if (sym_driver_setup.excludes[i] == io_port)
1648 return -ENODEV;
1649 }
1650 }
1651
1652 /*
1653 * Check if the chip is supported. Then copy the chip description
1654 * to our device structure so we can make it match the actual device
1655 * and options.
1656 */
1657 pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
1658 chip = sym_lookup_chip_table(pdev->device, revision);
1659 if (!chip) {
1660 dev_info(&pdev->dev, "device not supported\n");
1661 return -ENODEV;
1662 }
1663 memcpy(&device->chip, chip, sizeof(device->chip));
1664 device->chip.revision_id = revision;
1665
1666 return 0;
1667 }
1668
1669 /*
1670 * Ignore Symbios chips controlled by various RAID controllers.
1671 * These controllers set value 0x52414944 at RAM end - 16.
1672 */
1673 static int __devinit sym_check_raid(struct sym_device *device)
1674 {
1675 unsigned int ram_size, ram_val;
1676
1677 if (!device->s.ramaddr)
1678 return 0;
1679
1680 if (device->chip.features & FE_RAM8K)
1681 ram_size = 8192;
1682 else
1683 ram_size = 4096;
1684
1685 ram_val = readl(device->s.ramaddr + ram_size - 16);
1686 if (ram_val != 0x52414944)
1687 return 0;
1688
1689 dev_info(&device->pdev->dev,
1690 "not initializing, driven by RAID controller.\n");
1691 return -ENODEV;
1692 }
1693
1694 static int __devinit sym_set_workarounds(struct sym_device *device)
1695 {
1696 struct sym_chip *chip = &device->chip;
1697 struct pci_dev *pdev = device->pdev;
1698 u_short status_reg;
1699
1700 /*
1701 * (ITEM 12 of a DEL about the 896 I haven't yet).
1702 * We must ensure the chip will use WRITE AND INVALIDATE.
1703 * The revision number limit is for now arbitrary.
1704 */
1705 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) {
1706 chip->features |= (FE_WRIE | FE_CLSE);
1707 }
1708
1709 /* If the chip can do Memory Write Invalidate, enable it */
1710 if (chip->features & FE_WRIE) {
1711 if (pci_set_mwi(pdev))
1712 return -ENODEV;
1713 }
1714
1715 /*
1716 * Work around for errant bit in 895A. The 66Mhz
1717 * capable bit is set erroneously. Clear this bit.
1718 * (Item 1 DEL 533)
1719 *
1720 * Make sure Config space and Features agree.
1721 *
1722 * Recall: writes are not normal to status register -
1723 * write a 1 to clear and a 0 to leave unchanged.
1724 * Can only reset bits.
1725 */
1726 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1727 if (chip->features & FE_66MHZ) {
1728 if (!(status_reg & PCI_STATUS_66MHZ))
1729 chip->features &= ~FE_66MHZ;
1730 } else {
1731 if (status_reg & PCI_STATUS_66MHZ) {
1732 status_reg = PCI_STATUS_66MHZ;
1733 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1734 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1735 }
1736 }
1737
1738 return 0;
1739 }
1740
1741 /*
1742 * Read and check the PCI configuration for any detected NCR
1743 * boards and save data for attaching after all boards have
1744 * been detected.
1745 */
1746 static void __devinit
1747 sym_init_device(struct pci_dev *pdev, struct sym_device *device)
1748 {
1749 int i = 2;
1750 struct pci_bus_region bus_addr;
1751
1752 device->host_id = SYM_SETUP_HOST_ID;
1753 device->pdev = pdev;
1754
1755 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]);
1756 device->mmio_base = bus_addr.start;
1757
1758 /*
1759 * If the BAR is 64-bit, resource 2 will be occupied by the
1760 * upper 32 bits
1761 */
1762 if (!pdev->resource[i].flags)
1763 i++;
1764 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]);
1765 device->ram_base = bus_addr.start;
1766
1767 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1768 if (device->mmio_base)
1769 device->s.ioaddr = pci_iomap(pdev, 1,
1770 pci_resource_len(pdev, 1));
1771 #endif
1772 if (!device->s.ioaddr)
1773 device->s.ioaddr = pci_iomap(pdev, 0,
1774 pci_resource_len(pdev, 0));
1775 if (device->ram_base)
1776 device->s.ramaddr = pci_iomap(pdev, i,
1777 pci_resource_len(pdev, i));
1778 }
1779
1780 /*
1781 * The NCR PQS and PDS cards are constructed as a DEC bridge
1782 * behind which sits a proprietary NCR memory controller and
1783 * either four or two 53c875s as separate devices. We can tell
1784 * if an 875 is part of a PQS/PDS or not since if it is, it will
1785 * be on the same bus as the memory controller. In its usual
1786 * mode of operation, the 875s are slaved to the memory
1787 * controller for all transfers. To operate with the Linux
1788 * driver, the memory controller is disabled and the 875s
1789 * freed to function independently. The only wrinkle is that
1790 * the preset SCSI ID (which may be zero) must be read in from
1791 * a special configuration space register of the 875.
1792 */
1793 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
1794 {
1795 int slot;
1796 u8 tmp;
1797
1798 for (slot = 0; slot < 256; slot++) {
1799 struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
1800
1801 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
1802 pci_dev_put(memc);
1803 continue;
1804 }
1805
1806 /* bit 1: allow individual 875 configuration */
1807 pci_read_config_byte(memc, 0x44, &tmp);
1808 if ((tmp & 0x2) == 0) {
1809 tmp |= 0x2;
1810 pci_write_config_byte(memc, 0x44, tmp);
1811 }
1812
1813 /* bit 2: drive individual 875 interrupts to the bus */
1814 pci_read_config_byte(memc, 0x45, &tmp);
1815 if ((tmp & 0x4) == 0) {
1816 tmp |= 0x4;
1817 pci_write_config_byte(memc, 0x45, tmp);
1818 }
1819
1820 pci_dev_put(memc);
1821 break;
1822 }
1823
1824 pci_read_config_byte(pdev, 0x84, &tmp);
1825 sym_dev->host_id = tmp;
1826 }
1827
1828 /*
1829 * Called before unloading the module.
1830 * Detach the host.
1831 * We have to free resources and halt the NCR chip.
1832 */
1833 static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev)
1834 {
1835 printk("%s: detaching ...\n", sym_name(np));
1836
1837 del_timer_sync(&np->s.timer);
1838
1839 /*
1840 * Reset NCR chip.
1841 * We should use sym_soft_reset(), but we don't want to do
1842 * so, since we may not be safe if interrupts occur.
1843 */
1844 printk("%s: resetting chip\n", sym_name(np));
1845 OUTB(np, nc_istat, SRST);
1846 INB(np, nc_mbox1);
1847 udelay(10);
1848 OUTB(np, nc_istat, 0);
1849
1850 sym_free_resources(np, pdev);
1851
1852 return 1;
1853 }
1854
1855 /*
1856 * Driver host template.
1857 */
1858 static struct scsi_host_template sym2_template = {
1859 .module = THIS_MODULE,
1860 .name = "sym53c8xx",
1861 .info = sym53c8xx_info,
1862 .queuecommand = sym53c8xx_queue_command,
1863 .slave_alloc = sym53c8xx_slave_alloc,
1864 .slave_configure = sym53c8xx_slave_configure,
1865 .slave_destroy = sym53c8xx_slave_destroy,
1866 .eh_abort_handler = sym53c8xx_eh_abort_handler,
1867 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
1868 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
1869 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
1870 .this_id = 7,
1871 .use_clustering = ENABLE_CLUSTERING,
1872 .max_sectors = 0xFFFF,
1873 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1874 .proc_info = sym53c8xx_proc_info,
1875 .proc_name = NAME53C8XX,
1876 #endif
1877 };
1878
1879 static int attach_count;
1880
1881 static int __devinit sym2_probe(struct pci_dev *pdev,
1882 const struct pci_device_id *ent)
1883 {
1884 struct sym_device sym_dev;
1885 struct sym_nvram nvram;
1886 struct Scsi_Host *instance;
1887
1888 memset(&sym_dev, 0, sizeof(sym_dev));
1889 memset(&nvram, 0, sizeof(nvram));
1890
1891 if (pci_enable_device(pdev))
1892 goto leave;
1893
1894 pci_set_master(pdev);
1895
1896 if (pci_request_regions(pdev, NAME53C8XX))
1897 goto disable;
1898
1899 sym_init_device(pdev, &sym_dev);
1900 if (sym_check_supported(&sym_dev))
1901 goto free;
1902
1903 if (sym_check_raid(&sym_dev))
1904 goto leave; /* Don't disable the device */
1905
1906 if (sym_set_workarounds(&sym_dev))
1907 goto free;
1908
1909 sym_config_pqs(pdev, &sym_dev);
1910
1911 sym_get_nvram(&sym_dev, &nvram);
1912
1913 instance = sym_attach(&sym2_template, attach_count, &sym_dev);
1914 if (!instance)
1915 goto free;
1916
1917 if (scsi_add_host(instance, &pdev->dev))
1918 goto detach;
1919 scsi_scan_host(instance);
1920
1921 attach_count++;
1922
1923 return 0;
1924
1925 detach:
1926 sym_detach(pci_get_drvdata(pdev), pdev);
1927 free:
1928 pci_release_regions(pdev);
1929 disable:
1930 pci_disable_device(pdev);
1931 leave:
1932 return -ENODEV;
1933 }
1934
1935 static void __devexit sym2_remove(struct pci_dev *pdev)
1936 {
1937 struct sym_hcb *np = pci_get_drvdata(pdev);
1938 struct Scsi_Host *host = np->s.host;
1939
1940 scsi_remove_host(host);
1941 scsi_host_put(host);
1942
1943 sym_detach(np, pdev);
1944
1945 pci_release_regions(pdev);
1946 pci_disable_device(pdev);
1947
1948 attach_count--;
1949 }
1950
1951 static void sym2_get_signalling(struct Scsi_Host *shost)
1952 {
1953 struct sym_hcb *np = sym_get_hcb(shost);
1954 enum spi_signal_type type;
1955
1956 switch (np->scsi_mode) {
1957 case SMODE_SE:
1958 type = SPI_SIGNAL_SE;
1959 break;
1960 case SMODE_LVD:
1961 type = SPI_SIGNAL_LVD;
1962 break;
1963 case SMODE_HVD:
1964 type = SPI_SIGNAL_HVD;
1965 break;
1966 default:
1967 type = SPI_SIGNAL_UNKNOWN;
1968 break;
1969 }
1970 spi_signalling(shost) = type;
1971 }
1972
1973 static void sym2_set_offset(struct scsi_target *starget, int offset)
1974 {
1975 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1976 struct sym_hcb *np = sym_get_hcb(shost);
1977 struct sym_tcb *tp = &np->target[starget->id];
1978
1979 tp->tgoal.offset = offset;
1980 tp->tgoal.check_nego = 1;
1981 }
1982
1983 static void sym2_set_period(struct scsi_target *starget, int period)
1984 {
1985 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1986 struct sym_hcb *np = sym_get_hcb(shost);
1987 struct sym_tcb *tp = &np->target[starget->id];
1988
1989 /* have to have DT for these transfers, but DT will also
1990 * set width, so check that this is allowed */
1991 if (period <= np->minsync && spi_width(starget))
1992 tp->tgoal.dt = 1;
1993
1994 tp->tgoal.period = period;
1995 tp->tgoal.check_nego = 1;
1996 }
1997
1998 static void sym2_set_width(struct scsi_target *starget, int width)
1999 {
2000 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2001 struct sym_hcb *np = sym_get_hcb(shost);
2002 struct sym_tcb *tp = &np->target[starget->id];
2003
2004 /* It is illegal to have DT set on narrow transfers. If DT is
2005 * clear, we must also clear IU and QAS. */
2006 if (width == 0)
2007 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
2008
2009 tp->tgoal.width = width;
2010 tp->tgoal.check_nego = 1;
2011 }
2012
2013 static void sym2_set_dt(struct scsi_target *starget, int dt)
2014 {
2015 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2016 struct sym_hcb *np = sym_get_hcb(shost);
2017 struct sym_tcb *tp = &np->target[starget->id];
2018
2019 /* We must clear QAS and IU if DT is clear */
2020 if (dt)
2021 tp->tgoal.dt = 1;
2022 else
2023 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
2024 tp->tgoal.check_nego = 1;
2025 }
2026
2027 #if 0
2028 static void sym2_set_iu(struct scsi_target *starget, int iu)
2029 {
2030 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2031 struct sym_hcb *np = sym_get_hcb(shost);
2032 struct sym_tcb *tp = &np->target[starget->id];
2033
2034 if (iu)
2035 tp->tgoal.iu = tp->tgoal.dt = 1;
2036 else
2037 tp->tgoal.iu = 0;
2038 tp->tgoal.check_nego = 1;
2039 }
2040
2041 static void sym2_set_qas(struct scsi_target *starget, int qas)
2042 {
2043 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
2044 struct sym_hcb *np = sym_get_hcb(shost);
2045 struct sym_tcb *tp = &np->target[starget->id];
2046
2047 if (qas)
2048 tp->tgoal.dt = tp->tgoal.qas = 1;
2049 else
2050 tp->tgoal.qas = 0;
2051 tp->tgoal.check_nego = 1;
2052 }
2053 #endif
2054
2055 static struct spi_function_template sym2_transport_functions = {
2056 .set_offset = sym2_set_offset,
2057 .show_offset = 1,
2058 .set_period = sym2_set_period,
2059 .show_period = 1,
2060 .set_width = sym2_set_width,
2061 .show_width = 1,
2062 .set_dt = sym2_set_dt,
2063 .show_dt = 1,
2064 #if 0
2065 .set_iu = sym2_set_iu,
2066 .show_iu = 1,
2067 .set_qas = sym2_set_qas,
2068 .show_qas = 1,
2069 #endif
2070 .get_signalling = sym2_get_signalling,
2071 };
2072
2073 static struct pci_device_id sym2_id_table[] __devinitdata = {
2074 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
2075 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2076 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
2077 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2078 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
2079 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2080 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
2081 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2082 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
2083 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2084 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
2085 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2086 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
2087 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL },
2088 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
2089 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2090 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
2091 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2092 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
2093 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2094 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
2095 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2096 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
2097 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2098 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
2099 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2100 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
2101 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2102 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
2103 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2104 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
2105 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2106 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
2107 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2108 { 0, }
2109 };
2110
2111 MODULE_DEVICE_TABLE(pci, sym2_id_table);
2112
2113 static struct pci_driver sym2_driver = {
2114 .name = NAME53C8XX,
2115 .id_table = sym2_id_table,
2116 .probe = sym2_probe,
2117 .remove = __devexit_p(sym2_remove),
2118 };
2119
2120 static int __init sym2_init(void)
2121 {
2122 int error;
2123
2124 sym2_setup_params();
2125 sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
2126 if (!sym2_transport_template)
2127 return -ENODEV;
2128
2129 error = pci_register_driver(&sym2_driver);
2130 if (error)
2131 spi_release_transport(sym2_transport_template);
2132 return error;
2133 }
2134
2135 static void __exit sym2_exit(void)
2136 {
2137 pci_unregister_driver(&sym2_driver);
2138 spi_release_transport(sym2_transport_template);
2139 }
2140
2141 module_init(sym2_init);
2142 module_exit(sym2_exit);
linux v2.6.22.y-op