blob: 5d00e514ff28aa59d940c69bfa6da4199bdda97a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Linus Torvalds1da177e2005-04-16 15:20:36 -070042#include <linux/module.h>
43#include <linux/moduleparam.h>
44#include <linux/spinlock.h>
45#include <scsi/scsi.h>
46#include <scsi/scsi_tcq.h>
47#include <scsi/scsi_device.h>
48#include <scsi/scsi_transport.h>
49
50#include "sym_glue.h"
51#include "sym_nvram.h"
52
53#define NAME53C "sym53c"
54#define NAME53C8XX "sym53c8xx"
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
57unsigned int sym_debug_flags = 0;
58
59static char *excl_string;
60static char *safe_string;
61module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -070062module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
63module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
64module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
65module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
66module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
67module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
68module_param_named(verb, sym_driver_setup.verbose, byte, 0);
69module_param_named(debug, sym_debug_flags, uint, 0);
70module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
71module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
72module_param_named(excl, excl_string, charp, 0);
73module_param_named(safe, safe_string, charp, 0);
74
75MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
Linus Torvalds1da177e2005-04-16 15:20:36 -070076MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers");
77MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
78MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
79MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
80MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
81MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
82MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
83MODULE_PARM_DESC(debug, "Set bits to enable debugging");
84MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3");
85MODULE_PARM_DESC(nvram, "Option currently not used");
86MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
87MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
88
89MODULE_LICENSE("GPL");
90MODULE_VERSION(SYM_VERSION);
91MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
92MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
93
94static void sym2_setup_params(void)
95{
96 char *p = excl_string;
97 int xi = 0;
98
99 while (p && (xi < 8)) {
100 char *next_p;
101 int val = (int) simple_strtoul(p, &next_p, 0);
102 sym_driver_setup.excludes[xi++] = val;
103 p = next_p;
104 }
105
106 if (safe_string) {
107 if (*safe_string == 'y') {
108 sym_driver_setup.max_tag = 0;
109 sym_driver_setup.burst_order = 0;
110 sym_driver_setup.scsi_led = 0;
111 sym_driver_setup.scsi_diff = 1;
112 sym_driver_setup.irq_mode = 0;
113 sym_driver_setup.scsi_bus_check = 2;
114 sym_driver_setup.host_id = 7;
115 sym_driver_setup.verbose = 2;
116 sym_driver_setup.settle_delay = 10;
117 sym_driver_setup.use_nvram = 1;
118 } else if (*safe_string != 'n') {
119 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
120 " passed to safe option", safe_string);
121 }
122 }
123}
124
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125static struct scsi_transport_template *sym2_transport_template = NULL;
126
127/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 * Driver private area in the SCSI command structure.
129 */
130struct sym_ucmd { /* Override the SCSI pointer structure */
Linas Vepstasd68cd752007-10-05 15:55:04 -0400131 struct completion *eh_done; /* SCSI error handling */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132};
133
134#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp))
135#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137/*
138 * Complete a pending CAM CCB.
139 */
140void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
141{
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400142 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
143 BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
144
145 if (ucmd->eh_done)
146 complete(ucmd->eh_done);
147
Matthew Wilcox39c05d12007-10-05 15:55:00 -0400148 scsi_dma_unmap(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 cmd->scsi_done(cmd);
150}
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152/*
153 * Tell the SCSI layer about a BUS RESET.
154 */
155void sym_xpt_async_bus_reset(struct sym_hcb *np)
156{
157 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
158 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
159 np->s.settle_time_valid = 1;
160 if (sym_verbose >= 2)
161 printf_info("%s: command processing suspended for %d seconds\n",
162 sym_name(np), sym_driver_setup.settle_delay);
163}
164
165/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 * Choose the more appropriate CAM status if
167 * the IO encountered an extended error.
168 */
169static int sym_xerr_cam_status(int cam_status, int x_status)
170{
171 if (x_status) {
172 if (x_status & XE_PARITY_ERR)
173 cam_status = DID_PARITY;
174 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
175 cam_status = DID_ERROR;
176 else if (x_status & XE_BAD_PHASE)
177 cam_status = DID_ERROR;
178 else
179 cam_status = DID_ERROR;
180 }
181 return cam_status;
182}
183
184/*
185 * Build CAM result for a failed or auto-sensed IO.
186 */
187void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
188{
189 struct scsi_cmnd *cmd = cp->cmd;
190 u_int cam_status, scsi_status, drv_status;
191
192 drv_status = 0;
193 cam_status = DID_OK;
194 scsi_status = cp->ssss_status;
195
196 if (cp->host_flags & HF_SENSE) {
197 scsi_status = cp->sv_scsi_status;
198 resid = cp->sv_resid;
199 if (sym_verbose && cp->sv_xerr_status)
200 sym_print_xerr(cmd, cp->sv_xerr_status);
201 if (cp->host_status == HS_COMPLETE &&
202 cp->ssss_status == S_GOOD &&
203 cp->xerr_status == 0) {
204 cam_status = sym_xerr_cam_status(DID_OK,
205 cp->sv_xerr_status);
206 drv_status = DRIVER_SENSE;
207 /*
208 * Bounce back the sense data to user.
209 */
Nathan Lynchde15c202008-01-26 16:07:30 -0600210 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 memcpy(cmd->sense_buffer, cp->sns_bbuf,
FUJITA Tomonorib80ca4f2008-01-13 15:46:13 +0900212 min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213#if 0
214 /*
215 * If the device reports a UNIT ATTENTION condition
216 * due to a RESET condition, we should consider all
217 * disconnect CCBs for this unit as aborted.
218 */
219 if (1) {
220 u_char *p;
221 p = (u_char *) cmd->sense_data;
222 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
223 sym_clear_tasks(np, DID_ABORT,
224 cp->target,cp->lun, -1);
225 }
226#endif
227 } else {
228 /*
229 * Error return from our internal request sense. This
230 * is bad: we must clear the contingent allegiance
231 * condition otherwise the device will always return
232 * BUSY. Use a big stick.
233 */
234 sym_reset_scsi_target(np, cmd->device->id);
235 cam_status = DID_ERROR;
236 }
237 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */
238 cam_status = DID_OK;
239 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */
240 cam_status = DID_NO_CONNECT;
241 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/
242 cam_status = DID_ERROR;
243 else { /* Extended error */
244 if (sym_verbose) {
245 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
246 cp->host_status, cp->ssss_status,
247 cp->xerr_status);
248 }
249 /*
250 * Set the most appropriate value for CAM status.
251 */
252 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
253 }
FUJITA Tomonori938febd2007-05-26 02:31:17 +0900254 scsi_set_resid(cmd, resid);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
256}
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
259{
260 int segment;
FUJITA Tomonori938febd2007-05-26 02:31:17 +0900261 int use_sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700262
263 cp->data_len = 0;
264
Matthew Wilcox39c05d12007-10-05 15:55:00 -0400265 use_sg = scsi_dma_map(cmd);
FUJITA Tomonori938febd2007-05-26 02:31:17 +0900266 if (use_sg > 0) {
267 struct scatterlist *sg;
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100268 struct sym_tcb *tp = &np->target[cp->target];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269 struct sym_tblmove *data;
270
271 if (use_sg > SYM_CONF_MAX_SG) {
Matthew Wilcox39c05d12007-10-05 15:55:00 -0400272 scsi_dma_unmap(cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 return -1;
274 }
275
276 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
277
FUJITA Tomonori938febd2007-05-26 02:31:17 +0900278 scsi_for_each_sg(cmd, sg, use_sg, segment) {
279 dma_addr_t baddr = sg_dma_address(sg);
280 unsigned int len = sg_dma_len(sg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100282 if ((len & 1) && (tp->head.wval & EWS)) {
283 len++;
284 cp->odd_byte_adjustment++;
285 }
286
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 sym_build_sge(np, &data[segment], baddr, len);
288 cp->data_len += len;
289 }
290 } else {
291 segment = -2;
292 }
293
294 return segment;
295}
296
297/*
298 * Queue a SCSI command.
299 */
300static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
301{
302 struct scsi_device *sdev = cmd->device;
303 struct sym_tcb *tp;
304 struct sym_lcb *lp;
305 struct sym_ccb *cp;
306 int order;
307
308 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 * Retrieve the target descriptor.
310 */
311 tp = &np->target[sdev->id];
312
313 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 * Select tagged/untagged.
315 */
316 lp = sym_lp(tp, sdev->lun);
317 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
318
319 /*
320 * Queue the SCSI IO.
321 */
322 cp = sym_get_ccb(np, cmd, order);
323 if (!cp)
324 return 1; /* Means resource shortage */
325 sym_queue_scsiio(np, cmd, cp);
326 return 0;
327}
328
329/*
330 * Setup buffers and pointers that address the CDB.
331 */
332static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
333{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100336 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
337 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339 return 0;
340}
341
342/*
343 * Setup pointers that address the data and start the I/O.
344 */
345int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
346{
Matthew Wilcox44f30b0f2005-11-29 23:08:33 -0500347 u32 lastp, goalp;
348 int dir;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349
350 /*
351 * Build the CDB.
352 */
353 if (sym_setup_cdb(np, cmd, cp))
354 goto out_abort;
355
356 /*
357 * No direction means no data.
358 */
359 dir = cmd->sc_data_direction;
360 if (dir != DMA_NONE) {
361 cp->segments = sym_scatter(np, cp, cmd);
362 if (cp->segments < 0) {
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100363 sym_set_cam_status(cmd, DID_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 goto out_abort;
365 }
Matthew Wilcox44f30b0f2005-11-29 23:08:33 -0500366
367 /*
368 * No segments means no data.
369 */
370 if (!cp->segments)
371 dir = DMA_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372 } else {
373 cp->data_len = 0;
374 cp->segments = 0;
375 }
376
377 /*
Matthew Wilcox44f30b0f2005-11-29 23:08:33 -0500378 * Set the data pointer.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 */
Matthew Wilcox44f30b0f2005-11-29 23:08:33 -0500380 switch (dir) {
381 case DMA_BIDIRECTIONAL:
Matthew Wilcox3fb364e2007-10-05 15:55:10 -0400382 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command");
Matthew Wilcox44f30b0f2005-11-29 23:08:33 -0500383 sym_set_cam_status(cmd, DID_ERROR);
384 goto out_abort;
385 case DMA_TO_DEVICE:
386 goalp = SCRIPTA_BA(np, data_out2) + 8;
387 lastp = goalp - 8 - (cp->segments * (2*4));
388 break;
389 case DMA_FROM_DEVICE:
390 cp->host_flags |= HF_DATA_IN;
391 goalp = SCRIPTA_BA(np, data_in2) + 8;
392 lastp = goalp - 8 - (cp->segments * (2*4));
393 break;
394 case DMA_NONE:
395 default:
396 lastp = goalp = SCRIPTB_BA(np, no_data);
397 break;
398 }
399
400 /*
401 * Set all pointers values needed by SCRIPTS.
402 */
403 cp->phys.head.lastp = cpu_to_scr(lastp);
404 cp->phys.head.savep = cpu_to_scr(lastp);
405 cp->startp = cp->phys.head.savep;
406 cp->goalp = cpu_to_scr(goalp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407
408 /*
409 * When `#ifed 1', the code below makes the driver
410 * panic on the first attempt to write to a SCSI device.
411 * It is the first test we want to do after a driver
412 * change that does not seem obviously safe. :)
413 */
414#if 0
415 switch (cp->cdb_buf[0]) {
416 case 0x0A: case 0x2A: case 0xAA:
417 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
418 break;
419 default:
420 break;
421 }
422#endif
423
424 /*
425 * activate this job.
426 */
Matthew Wilcox3bea15a2006-03-28 11:03:44 -0500427 sym_put_start_queue(np, cp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428 return 0;
429
430out_abort:
431 sym_free_ccb(np, cp);
432 sym_xpt_done(np, cmd);
433 return 0;
434}
435
436
437/*
438 * timer daemon.
439 *
440 * Misused to keep the driver running when
441 * interrupts are not configured correctly.
442 */
443static void sym_timer(struct sym_hcb *np)
444{
445 unsigned long thistime = jiffies;
446
447 /*
448 * Restart the timer.
449 */
450 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
451 add_timer(&np->s.timer);
452
453 /*
454 * If we are resetting the ncr, wait for settle_time before
455 * clearing it. Then command processing will be resumed.
456 */
457 if (np->s.settle_time_valid) {
458 if (time_before_eq(np->s.settle_time, thistime)) {
459 if (sym_verbose >= 2 )
460 printk("%s: command processing resumed\n",
461 sym_name(np));
462 np->s.settle_time_valid = 0;
463 }
464 return;
465 }
466
467 /*
468 * Nothing to do for now, but that may come.
469 */
470 if (np->s.lasttime + 4*HZ < thistime) {
471 np->s.lasttime = thistime;
472 }
473
474#ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
475 /*
476 * Some way-broken PCI bridges may lead to
477 * completions being lost when the clearing
478 * of the INTFLY flag by the CPU occurs
479 * concurrently with the chip raising this flag.
480 * If this ever happen, lost completions will
481 * be reaped here.
482 */
483 sym_wakeup_done(np);
484#endif
485}
486
487
488/*
489 * PCI BUS error handler.
490 */
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400491void sym_log_bus_error(struct Scsi_Host *shost)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492{
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400493 struct sym_data *sym_data = shost_priv(shost);
494 struct pci_dev *pdev = sym_data->pdev;
495 unsigned short pci_sts;
496 pci_read_config_word(pdev, PCI_STATUS, &pci_sts);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700497 if (pci_sts & 0xf900) {
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400498 pci_write_config_word(pdev, PCI_STATUS, pci_sts);
499 shost_printk(KERN_WARNING, shost,
500 "PCI bus error: status = 0x%04x\n", pci_sts & 0xf900);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501 }
502}
503
504/*
505 * queuecommand method. Entered with the host adapter lock held and
506 * interrupts disabled.
507 */
Jeff Garzikf2812332010-11-16 02:10:29 -0500508static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509 void (*done)(struct scsi_cmnd *))
510{
511 struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
512 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
513 int sts = 0;
514
Matthew Wilcox71c222d2007-10-05 15:55:01 -0400515 cmd->scsi_done = done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 memset(ucp, 0, sizeof(*ucp));
517
518 /*
519 * Shorten our settle_time if needed for
520 * this command not to time out.
521 */
Jens Axboe242f9dc2008-09-14 05:55:09 -0700522 if (np->s.settle_time_valid && cmd->request->timeout) {
523 unsigned long tlimit = jiffies + cmd->request->timeout;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 tlimit -= SYM_CONF_TIMER_INTERVAL*2;
525 if (time_after(np->s.settle_time, tlimit)) {
526 np->s.settle_time = tlimit;
527 }
528 }
529
530 if (np->s.settle_time_valid)
531 return SCSI_MLQUEUE_HOST_BUSY;
532
533 sts = sym_queue_command(np, cmd);
534 if (sts)
535 return SCSI_MLQUEUE_HOST_BUSY;
536 return 0;
537}
538
Jeff Garzikf2812332010-11-16 02:10:29 -0500539static DEF_SCSI_QCMD(sym53c8xx_queue_command)
540
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541/*
542 * Linux entry point of the interrupt handler.
543 */
David Howells7d12e782006-10-05 14:55:46 +0100544static irqreturn_t sym53c8xx_intr(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545{
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -0400546 struct Scsi_Host *shost = dev_id;
547 struct sym_data *sym_data = shost_priv(shost);
548 irqreturn_t result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700549
Linas Vepstasd68cd752007-10-05 15:55:04 -0400550 /* Avoid spinloop trying to handle interrupts on frozen device */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -0400551 if (pci_channel_offline(sym_data->pdev))
Linas Vepstasd68cd752007-10-05 15:55:04 -0400552 return IRQ_NONE;
553
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
555
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -0400556 spin_lock(shost->host_lock);
557 result = sym_interrupt(shost);
558 spin_unlock(shost->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559
560 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
561
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -0400562 return result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563}
564
565/*
566 * Linux entry point of the timer handler
567 */
568static void sym53c8xx_timer(unsigned long npref)
569{
570 struct sym_hcb *np = (struct sym_hcb *)npref;
571 unsigned long flags;
572
573 spin_lock_irqsave(np->s.host->host_lock, flags);
574 sym_timer(np);
575 spin_unlock_irqrestore(np->s.host->host_lock, flags);
576}
577
578
579/*
580 * What the eh thread wants us to perform.
581 */
582#define SYM_EH_ABORT 0
583#define SYM_EH_DEVICE_RESET 1
584#define SYM_EH_BUS_RESET 2
585#define SYM_EH_HOST_RESET 3
586
587/*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 * Generic method for our eh processing.
589 * The 'op' argument tells what we have to do.
590 */
591static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
592{
Matthew Wilcoxb4e93a72006-03-28 11:03:44 -0500593 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400594 struct Scsi_Host *shost = cmd->device->host;
595 struct sym_data *sym_data = shost_priv(shost);
596 struct pci_dev *pdev = sym_data->pdev;
597 struct sym_hcb *np = sym_data->ncb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 SYM_QUEHEAD *qp;
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400599 int cmd_queued = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 int sts = -1;
Matthew Wilcoxd637c452006-03-29 14:45:18 -0700601 struct completion eh_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700602
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400603 scmd_printk(KERN_WARNING, cmd, "%s operation started\n", opname);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700604
Linas Vepstasd68cd752007-10-05 15:55:04 -0400605 /* We may be in an error condition because the PCI bus
606 * went down. In this case, we need to wait until the
607 * PCI bus is reset, the card is reset, and only then
608 * proceed with the scsi error recovery. There's no
609 * point in hurrying; take a leisurely wait.
610 */
611#define WAIT_FOR_PCI_RECOVERY 35
612 if (pci_channel_offline(pdev)) {
Linas Vepstasd68cd752007-10-05 15:55:04 -0400613 int finished_reset = 0;
614 init_completion(&eh_done);
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400615 spin_lock_irq(shost->host_lock);
Linas Vepstasd68cd752007-10-05 15:55:04 -0400616 /* Make sure we didn't race */
617 if (pci_channel_offline(pdev)) {
Krzysztof Heltd9aa3af2008-01-11 21:50:46 +0100618 BUG_ON(sym_data->io_reset);
619 sym_data->io_reset = &eh_done;
Linas Vepstasd68cd752007-10-05 15:55:04 -0400620 } else {
Linas Vepstasd68cd752007-10-05 15:55:04 -0400621 finished_reset = 1;
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -0400622 }
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400623 spin_unlock_irq(shost->host_lock);
Linas Vepstasd68cd752007-10-05 15:55:04 -0400624 if (!finished_reset)
Krzysztof Heltd9aa3af2008-01-11 21:50:46 +0100625 finished_reset = wait_for_completion_timeout
626 (sym_data->io_reset,
Linas Vepstasd68cd752007-10-05 15:55:04 -0400627 WAIT_FOR_PCI_RECOVERY*HZ);
Krzysztof Heltd9aa3af2008-01-11 21:50:46 +0100628 spin_lock_irq(shost->host_lock);
629 sym_data->io_reset = NULL;
630 spin_unlock_irq(shost->host_lock);
Linas Vepstasd68cd752007-10-05 15:55:04 -0400631 if (!finished_reset)
632 return SCSI_FAILED;
633 }
634
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400635 spin_lock_irq(shost->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636 /* This one is queued in some place -> to wait for completion */
637 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
638 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
639 if (cp->cmd == cmd) {
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400640 cmd_queued = 1;
Matthew Wilcoxab19d522006-03-28 11:03:44 -0500641 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700642 }
643 }
644
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 /* Try to proceed the operation we have been asked for */
646 sts = -1;
647 switch(op) {
648 case SYM_EH_ABORT:
649 sts = sym_abort_scsiio(np, cmd, 1);
650 break;
651 case SYM_EH_DEVICE_RESET:
652 sts = sym_reset_scsi_target(np, cmd->device->id);
653 break;
654 case SYM_EH_BUS_RESET:
655 sym_reset_scsi_bus(np, 1);
656 sts = 0;
657 break;
658 case SYM_EH_HOST_RESET:
659 sym_reset_scsi_bus(np, 0);
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400660 sym_start_up(shost, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 sts = 0;
662 break;
663 default:
664 break;
665 }
666
667 /* On error, restore everything and cross fingers :) */
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400668 if (sts)
669 cmd_queued = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400671 if (cmd_queued) {
672 init_completion(&eh_done);
673 ucmd->eh_done = &eh_done;
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400674 spin_unlock_irq(shost->host_lock);
Matthew Wilcoxd637c452006-03-29 14:45:18 -0700675 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400676 ucmd->eh_done = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 sts = -2;
Matthew Wilcoxb4e93a72006-03-28 11:03:44 -0500678 }
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400679 } else {
Matthew Wilcox5111eef2007-10-05 15:55:13 -0400680 spin_unlock_irq(shost->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 }
Matthew Wilcox2ba65362007-10-05 15:55:03 -0400682
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
684 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
685 return sts ? SCSI_FAILED : SCSI_SUCCESS;
686}
687
688
689/*
690 * Error handlers called from the eh thread (one thread per HBA).
691 */
692static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
693{
Matthew Wilcoxab19d522006-03-28 11:03:44 -0500694 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695}
696
697static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
698{
Matthew Wilcoxab19d522006-03-28 11:03:44 -0500699 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700}
701
702static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
703{
Matthew Wilcoxab19d522006-03-28 11:03:44 -0500704 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705}
706
707static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
708{
Matthew Wilcoxab19d522006-03-28 11:03:44 -0500709 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710}
711
712/*
713 * Tune device queuing depth, according to various limits.
714 */
715static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
716{
717 struct sym_lcb *lp = sym_lp(tp, lun);
718 u_short oldtags;
719
720 if (!lp)
721 return;
722
723 oldtags = lp->s.reqtags;
724
725 if (reqtags > lp->s.scdev_depth)
726 reqtags = lp->s.scdev_depth;
727
Linus Torvalds1da177e2005-04-16 15:20:36 -0700728 lp->s.reqtags = reqtags;
729
730 if (reqtags != oldtags) {
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100731 dev_info(&tp->starget->dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 "tagged command queuing %s, command queue depth %d.\n",
Matthew Wilcox3bea15a2006-03-28 11:03:44 -0500733 lp->s.reqtags ? "enabled" : "disabled", reqtags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 }
735}
736
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100737static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738{
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500739 struct sym_hcb *np = sym_get_hcb(sdev->host);
740 struct sym_tcb *tp = &np->target[sdev->id];
741 struct sym_lcb *lp;
Aaro Koskinenfa858452009-04-14 15:47:00 -0500742 unsigned long flags;
743 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100745 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
746 return -ENXIO;
747
Aaro Koskinenfa858452009-04-14 15:47:00 -0500748 spin_lock_irqsave(np->s.host->host_lock, flags);
749
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100750 /*
751 * Fail the device init if the device is flagged NOSCAN at BOOT in
752 * the NVRAM. This may speed up boot and maintain coherency with
753 * BIOS device numbering. Clearing the flag allows the user to
754 * rescan skipped devices later. We also return an error for
755 * devices not flagged for SCAN LUNS in the NVRAM since some single
756 * lun devices behave badly when asked for a non zero LUN.
757 */
758
Matthew Wilcox66e8d1c2005-11-29 23:08:46 -0500759 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100760 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
Aaro Koskinenfa858452009-04-14 15:47:00 -0500761 starget_printk(KERN_INFO, sdev->sdev_target,
Matthew Wilcox66e8d1c2005-11-29 23:08:46 -0500762 "Scan at boot disabled in NVRAM\n");
Aaro Koskinenfa858452009-04-14 15:47:00 -0500763 error = -ENXIO;
764 goto out;
Matthew Wilcox 53222b92005-05-20 19:15:43 +0100765 }
766
Matthew Wilcox66e8d1c2005-11-29 23:08:46 -0500767 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
Aaro Koskinenfa858452009-04-14 15:47:00 -0500768 if (sdev->lun != 0) {
769 error = -ENXIO;
770 goto out;
771 }
772 starget_printk(KERN_INFO, sdev->sdev_target,
Matthew Wilcox66e8d1c2005-11-29 23:08:46 -0500773 "Multiple LUNs disabled in NVRAM\n");
774 }
775
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500776 lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
Aaro Koskinenfa858452009-04-14 15:47:00 -0500777 if (!lp) {
778 error = -ENOMEM;
779 goto out;
780 }
781 if (tp->nlcb == 1)
782 tp->starget = sdev->sdev_target;
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500783
Matthew Wilcoxb37df482005-11-29 23:08:44 -0500784 spi_min_period(tp->starget) = tp->usr_period;
785 spi_max_width(tp->starget) = tp->usr_width;
786
Aaro Koskinenfa858452009-04-14 15:47:00 -0500787 error = 0;
788out:
789 spin_unlock_irqrestore(np->s.host->host_lock, flags);
790
791 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792}
793
Linus Torvalds1da177e2005-04-16 15:20:36 -0700794/*
795 * Linux entry point for device queue sizing.
796 */
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500797static int sym53c8xx_slave_configure(struct scsi_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798{
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500799 struct sym_hcb *np = sym_get_hcb(sdev->host);
800 struct sym_tcb *tp = &np->target[sdev->id];
801 struct sym_lcb *lp = sym_lp(tp, sdev->lun);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 int reqtags, depth_to_use;
803
804 /*
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 * Get user flags.
806 */
807 lp->curr_flags = lp->user_flags;
808
809 /*
810 * Select queue depth from driver setup.
Tony Battersbyc2fd2062009-01-08 12:58:04 -0500811 * Do not use more than configured by user.
812 * Use at least 1.
813 * Do not use more than our maximum.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 */
Matthew Wilcoxa44131b2007-10-05 15:55:08 -0400815 reqtags = sym_driver_setup.max_tag;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 if (reqtags > tp->usrtags)
817 reqtags = tp->usrtags;
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500818 if (!sdev->tagged_supported)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819 reqtags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 if (reqtags > SYM_CONF_MAX_TAG)
821 reqtags = SYM_CONF_MAX_TAG;
Tony Battersbyc2fd2062009-01-08 12:58:04 -0500822 depth_to_use = reqtags ? reqtags : 1;
Christoph Hellwigdb5ed4d2014-11-13 15:08:42 +0100823 scsi_change_queue_depth(sdev, depth_to_use);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 lp->s.scdev_depth = depth_to_use;
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500825 sym_tune_dev_queuing(tp, sdev->lun, reqtags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500827 if (!spi_initial_dv(sdev->sdev_target))
828 spi_dv_device(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829
830 return 0;
831}
832
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500833static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
834{
835 struct sym_hcb *np = sym_get_hcb(sdev->host);
Aaro Koskinenfa858452009-04-14 15:47:00 -0500836 struct sym_tcb *tp = &np->target[sdev->id];
837 struct sym_lcb *lp = sym_lp(tp, sdev->lun);
838 unsigned long flags;
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500839
Stratos Psomadakiscced5042011-12-04 02:23:54 +0200840 /* if slave_alloc returned before allocating a sym_lcb, return */
841 if (!lp)
842 return;
843
Aaro Koskinenfa858452009-04-14 15:47:00 -0500844 spin_lock_irqsave(np->s.host->host_lock, flags);
845
846 if (lp->busy_itlq || lp->busy_itl) {
847 /*
848 * This really shouldn't happen, but we can't return an error
849 * so let's try to stop all on-going I/O.
850 */
851 starget_printk(KERN_WARNING, tp->starget,
Hannes Reinecke9cb78c12014-06-25 15:27:36 +0200852 "Removing busy LCB (%d)\n", (u8)sdev->lun);
Aaro Koskinenfa858452009-04-14 15:47:00 -0500853 sym_reset_scsi_bus(np, 1);
854 }
855
856 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) {
857 /*
858 * It was the last unit for this target.
859 */
860 tp->head.sval = 0;
861 tp->head.wval = np->rv_scntl3;
862 tp->head.uval = 0;
863 tp->tgoal.check_nego = 1;
864 tp->starget = NULL;
865 }
866
867 spin_unlock_irqrestore(np->s.host->host_lock, flags);
Matthew Wilcox84e203a2005-11-29 23:08:31 -0500868}
869
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870/*
871 * Linux entry point for info() function
872 */
873static const char *sym53c8xx_info (struct Scsi_Host *host)
874{
875 return SYM_DRIVER_NAME;
876}
877
878
879#ifdef SYM_LINUX_PROC_INFO_SUPPORT
880/*
881 * Proc file system stuff
882 *
883 * A read operation returns adapter information.
884 * A write operation is a control command.
885 * The string is parsed in the driver code and the command is passed
886 * to the sym_usercmd() function.
887 */
888
889#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
890
891struct sym_usrcmd {
892 u_long target;
893 u_long lun;
894 u_long data;
895 u_long cmd;
896};
897
898#define UC_SETSYNC 10
899#define UC_SETTAGS 11
900#define UC_SETDEBUG 12
901#define UC_SETWIDE 14
902#define UC_SETFLAG 15
903#define UC_SETVERBOSE 17
904#define UC_RESETDEV 18
905#define UC_CLEARDEV 19
906
907static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
908{
909 struct sym_tcb *tp;
910 int t, l;
911
912 switch (uc->cmd) {
913 case 0: return;
914
915#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
916 case UC_SETDEBUG:
917 sym_debug_flags = uc->data;
918 break;
919#endif
920 case UC_SETVERBOSE:
921 np->verbose = uc->data;
922 break;
923 default:
924 /*
925 * We assume that other commands apply to targets.
926 * This should always be the case and avoid the below
927 * 4 lines to be repeated 6 times.
928 */
929 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
930 if (!((uc->target >> t) & 1))
931 continue;
932 tp = &np->target[t];
Aaro Koskinenfa858452009-04-14 15:47:00 -0500933 if (!tp->nlcb)
934 continue;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935
936 switch (uc->cmd) {
937
938 case UC_SETSYNC:
939 if (!uc->data || uc->data >= 255) {
940 tp->tgoal.iu = tp->tgoal.dt =
941 tp->tgoal.qas = 0;
942 tp->tgoal.offset = 0;
943 } else if (uc->data <= 9 && np->minsync_dt) {
944 if (uc->data < np->minsync_dt)
945 uc->data = np->minsync_dt;
946 tp->tgoal.iu = tp->tgoal.dt =
947 tp->tgoal.qas = 1;
948 tp->tgoal.width = 1;
949 tp->tgoal.period = uc->data;
950 tp->tgoal.offset = np->maxoffs_dt;
951 } else {
952 if (uc->data < np->minsync)
953 uc->data = np->minsync;
954 tp->tgoal.iu = tp->tgoal.dt =
955 tp->tgoal.qas = 0;
956 tp->tgoal.period = uc->data;
957 tp->tgoal.offset = np->maxoffs;
958 }
959 tp->tgoal.check_nego = 1;
960 break;
961 case UC_SETWIDE:
962 tp->tgoal.width = uc->data ? 1 : 0;
963 tp->tgoal.check_nego = 1;
964 break;
965 case UC_SETTAGS:
966 for (l = 0; l < SYM_CONF_MAX_LUN; l++)
967 sym_tune_dev_queuing(tp, l, uc->data);
968 break;
969 case UC_RESETDEV:
970 tp->to_reset = 1;
971 np->istat_sem = SEM;
972 OUTB(np, nc_istat, SIGP|SEM);
973 break;
974 case UC_CLEARDEV:
975 for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
976 struct sym_lcb *lp = sym_lp(tp, l);
977 if (lp) lp->to_clear = 1;
978 }
979 np->istat_sem = SEM;
980 OUTB(np, nc_istat, SIGP|SEM);
981 break;
982 case UC_SETFLAG:
983 tp->usrflags = uc->data;
984 break;
985 }
986 }
987 break;
988 }
989}
990
Andrew Morton4e62b092009-12-14 18:01:02 -0800991static int sym_skip_spaces(char *ptr, int len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992{
993 int cnt, c;
994
995 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
996
997 return (len - cnt);
998}
999
1000static int get_int_arg(char *ptr, int len, u_long *pv)
1001{
1002 char *end;
1003
1004 *pv = simple_strtoul(ptr, &end, 10);
1005 return (end - ptr);
1006}
1007
1008static int is_keyword(char *ptr, int len, char *verb)
1009{
1010 int verb_len = strlen(verb);
1011
1012 if (len >= verb_len && !memcmp(verb, ptr, verb_len))
1013 return verb_len;
1014 else
1015 return 0;
1016}
1017
1018#define SKIP_SPACES(ptr, len) \
Andrew Morton4e62b092009-12-14 18:01:02 -08001019 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020 return -EINVAL; \
1021 ptr += arg_len; len -= arg_len;
1022
1023#define GET_INT_ARG(ptr, len, v) \
1024 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \
1025 return -EINVAL; \
1026 ptr += arg_len; len -= arg_len;
1027
1028
1029/*
1030 * Parse a control command
1031 */
1032
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001033static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001034{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001035 struct sym_hcb *np = sym_get_hcb(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036 char *ptr = buffer;
1037 int len = length;
1038 struct sym_usrcmd cmd, *uc = &cmd;
1039 int arg_len;
1040 u_long target;
1041
1042 memset(uc, 0, sizeof(*uc));
1043
1044 if (len > 0 && ptr[len-1] == '\n')
1045 --len;
1046
1047 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
1048 uc->cmd = UC_SETSYNC;
1049 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
1050 uc->cmd = UC_SETTAGS;
1051 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
1052 uc->cmd = UC_SETVERBOSE;
1053 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
1054 uc->cmd = UC_SETWIDE;
1055#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1056 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
1057 uc->cmd = UC_SETDEBUG;
1058#endif
1059 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
1060 uc->cmd = UC_SETFLAG;
1061 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
1062 uc->cmd = UC_RESETDEV;
1063 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
1064 uc->cmd = UC_CLEARDEV;
1065 else
1066 arg_len = 0;
1067
1068#ifdef DEBUG_PROC_INFO
1069printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
1070#endif
1071
1072 if (!arg_len)
1073 return -EINVAL;
1074 ptr += arg_len; len -= arg_len;
1075
1076 switch(uc->cmd) {
1077 case UC_SETSYNC:
1078 case UC_SETTAGS:
1079 case UC_SETWIDE:
1080 case UC_SETFLAG:
1081 case UC_RESETDEV:
1082 case UC_CLEARDEV:
1083 SKIP_SPACES(ptr, len);
1084 if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
1085 ptr += arg_len; len -= arg_len;
1086 uc->target = ~0;
1087 } else {
1088 GET_INT_ARG(ptr, len, target);
1089 uc->target = (1<<target);
1090#ifdef DEBUG_PROC_INFO
1091printk("sym_user_command: target=%ld\n", target);
1092#endif
1093 }
1094 break;
1095 }
1096
1097 switch(uc->cmd) {
1098 case UC_SETVERBOSE:
1099 case UC_SETSYNC:
1100 case UC_SETTAGS:
1101 case UC_SETWIDE:
1102 SKIP_SPACES(ptr, len);
1103 GET_INT_ARG(ptr, len, uc->data);
1104#ifdef DEBUG_PROC_INFO
1105printk("sym_user_command: data=%ld\n", uc->data);
1106#endif
1107 break;
1108#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1109 case UC_SETDEBUG:
1110 while (len > 0) {
1111 SKIP_SPACES(ptr, len);
1112 if ((arg_len = is_keyword(ptr, len, "alloc")))
1113 uc->data |= DEBUG_ALLOC;
1114 else if ((arg_len = is_keyword(ptr, len, "phase")))
1115 uc->data |= DEBUG_PHASE;
1116 else if ((arg_len = is_keyword(ptr, len, "queue")))
1117 uc->data |= DEBUG_QUEUE;
1118 else if ((arg_len = is_keyword(ptr, len, "result")))
1119 uc->data |= DEBUG_RESULT;
1120 else if ((arg_len = is_keyword(ptr, len, "scatter")))
1121 uc->data |= DEBUG_SCATTER;
1122 else if ((arg_len = is_keyword(ptr, len, "script")))
1123 uc->data |= DEBUG_SCRIPT;
1124 else if ((arg_len = is_keyword(ptr, len, "tiny")))
1125 uc->data |= DEBUG_TINY;
1126 else if ((arg_len = is_keyword(ptr, len, "timing")))
1127 uc->data |= DEBUG_TIMING;
1128 else if ((arg_len = is_keyword(ptr, len, "nego")))
1129 uc->data |= DEBUG_NEGO;
1130 else if ((arg_len = is_keyword(ptr, len, "tags")))
1131 uc->data |= DEBUG_TAGS;
1132 else if ((arg_len = is_keyword(ptr, len, "pointer")))
1133 uc->data |= DEBUG_POINTER;
1134 else
1135 return -EINVAL;
1136 ptr += arg_len; len -= arg_len;
1137 }
1138#ifdef DEBUG_PROC_INFO
1139printk("sym_user_command: data=%ld\n", uc->data);
1140#endif
1141 break;
1142#endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1143 case UC_SETFLAG:
1144 while (len > 0) {
1145 SKIP_SPACES(ptr, len);
1146 if ((arg_len = is_keyword(ptr, len, "no_disc")))
1147 uc->data &= ~SYM_DISC_ENABLED;
1148 else
1149 return -EINVAL;
1150 ptr += arg_len; len -= arg_len;
1151 }
1152 break;
1153 default:
1154 break;
1155 }
1156
1157 if (len)
1158 return -EINVAL;
1159 else {
1160 unsigned long flags;
1161
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001162 spin_lock_irqsave(shost->host_lock, flags);
1163 sym_exec_user_command(np, uc);
1164 spin_unlock_irqrestore(shost->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 }
1166 return length;
1167}
1168
1169#endif /* SYM_LINUX_USER_COMMAND_SUPPORT */
1170
1171
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172/*
1173 * Copy formatted information into the input buffer.
1174 */
Al Viroee127fec2013-03-31 00:10:16 -04001175static int sym_show_info(struct seq_file *m, struct Scsi_Host *shost)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176{
Al Viroee127fec2013-03-31 00:10:16 -04001177#ifdef SYM_LINUX_USER_INFO_SUPPORT
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001178 struct sym_data *sym_data = shost_priv(shost);
1179 struct pci_dev *pdev = sym_data->pdev;
1180 struct sym_hcb *np = sym_data->ncb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001181
Al Viroee127fec2013-03-31 00:10:16 -04001182 seq_printf(m, "Chip " NAME53C "%s, device id 0x%x, "
1183 "revision id 0x%x\n", np->s.chip_name,
1184 pdev->device, pdev->revision);
1185 seq_printf(m, "At PCI address %s, IRQ %u\n",
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001186 pci_name(pdev), pdev->irq);
Al Viroee127fec2013-03-31 00:10:16 -04001187 seq_printf(m, "Min. period factor %d, %s SCSI BUS%s\n",
1188 (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
1189 np->maxwide ? "Wide" : "Narrow",
1190 np->minsync_dt ? ", DT capable" : "");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191
Al Viroee127fec2013-03-31 00:10:16 -04001192 seq_printf(m, "Max. started commands %d, "
1193 "max. commands per LUN %d\n",
1194 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195
Al Viroee127fec2013-03-31 00:10:16 -04001196 return 0;
1197#else
1198 return -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199#endif /* SYM_LINUX_USER_INFO_SUPPORT */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200}
Al Viroee127fec2013-03-31 00:10:16 -04001201
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202#endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1203
1204/*
Tony Battersby783fa732009-01-08 12:56:58 -05001205 * Free resources claimed by sym_iomap_device(). Note that
Tony Battersbya71d0352009-01-08 12:55:52 -05001206 * sym_free_resources() should be used instead of this function after calling
1207 * sym_attach().
1208 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001209static void sym_iounmap_device(struct sym_device *device)
Tony Battersbya71d0352009-01-08 12:55:52 -05001210{
1211 if (device->s.ioaddr)
1212 pci_iounmap(device->pdev, device->s.ioaddr);
1213 if (device->s.ramaddr)
1214 pci_iounmap(device->pdev, device->s.ramaddr);
1215}
1216
1217/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218 * Free controller resources.
1219 */
Tony Battersbyb4090632009-01-08 12:54:45 -05001220static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev,
1221 int do_free_irq)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222{
1223 /*
1224 * Free O/S specific resources.
1225 */
Tony Battersbyb4090632009-01-08 12:54:45 -05001226 if (do_free_irq)
Tony Battersby7ee24132007-11-06 14:40:54 -05001227 free_irq(pdev->irq, np->s.host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 if (np->s.ioaddr)
1229 pci_iounmap(pdev, np->s.ioaddr);
1230 if (np->s.ramaddr)
1231 pci_iounmap(pdev, np->s.ramaddr);
1232 /*
1233 * Free O/S independent resources.
1234 */
1235 sym_hcb_free(np);
1236
1237 sym_mfree_dma(np, sizeof(*np), "HCB");
1238}
1239
1240/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001241 * Host attach and initialisations.
1242 *
1243 * Allocate host data and ncb structure.
1244 * Remap MMIO region.
1245 * Do chip initialization.
1246 * If all is OK, install interrupt handling and
1247 * start the timer daemon.
1248 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001249static struct Scsi_Host *sym_attach(struct scsi_host_template *tpnt, int unit,
1250 struct sym_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251{
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001252 struct sym_data *sym_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 struct sym_hcb *np = NULL;
Tony Battersbya71d0352009-01-08 12:55:52 -05001254 struct Scsi_Host *shost = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 struct pci_dev *pdev = dev->pdev;
1256 unsigned long flags;
1257 struct sym_fw *fw;
Tony Battersbyb4090632009-01-08 12:54:45 -05001258 int do_free_irq = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259
Matthew Wilcox8022fbd2007-10-05 15:55:11 -04001260 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n",
Matthew Wilcoxbd678452007-10-05 15:55:05 -04001261 unit, dev->chip.name, pdev->revision, pci_name(pdev),
Matthew Wilcox8022fbd2007-10-05 15:55:11 -04001262 pdev->irq);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263
1264 /*
1265 * Get the firmware for this chip.
1266 */
1267 fw = sym_find_firmware(&dev->chip);
1268 if (!fw)
Tony Battersbya71d0352009-01-08 12:55:52 -05001269 goto attach_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001271 shost = scsi_host_alloc(tpnt, sizeof(*sym_data));
1272 if (!shost)
Tony Battersbya71d0352009-01-08 12:55:52 -05001273 goto attach_failed;
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001274 sym_data = shost_priv(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275
1276 /*
1277 * Allocate immediately the host control block,
1278 * since we are only expecting to succeed. :)
1279 * We keep track in the HCB of all the resources that
1280 * are to be released on error.
1281 */
1282 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
1283 if (!np)
1284 goto attach_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001285 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001286 sym_data->ncb = np;
1287 sym_data->pdev = pdev;
1288 np->s.host = shost;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001290 pci_set_drvdata(pdev, shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291
1292 /*
1293 * Copy some useful infos to the HCB.
1294 */
1295 np->hcb_ba = vtobus(np);
1296 np->verbose = sym_driver_setup.verbose;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001297 np->s.unit = unit;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298 np->features = dev->chip.features;
1299 np->clock_divn = dev->chip.nr_divisor;
1300 np->maxoffs = dev->chip.offset_max;
1301 np->maxburst = dev->chip.burst_max;
1302 np->myaddr = dev->host_id;
Tony Battersbya71d0352009-01-08 12:55:52 -05001303 np->mmio_ba = (u32)dev->mmio_base;
Tony Battersby783fa732009-01-08 12:56:58 -05001304 np->ram_ba = (u32)dev->ram_base;
Tony Battersbya71d0352009-01-08 12:55:52 -05001305 np->s.ioaddr = dev->s.ioaddr;
1306 np->s.ramaddr = dev->s.ramaddr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307
1308 /*
1309 * Edit its name.
1310 */
1311 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
1312 sprintf(np->s.inst_name, "sym%d", np->s.unit);
1313
Matthew Wilcox4d85b472007-10-05 15:55:09 -04001314 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) &&
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001315 !pci_set_dma_mask(pdev, DMA_DAC_MASK)) {
Matthew Wilcox4d85b472007-10-05 15:55:09 -04001316 set_dac(np);
Yang Hongyang284901a2009-04-06 19:01:15 -07001317 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
Matthew Wilcox4d85b472007-10-05 15:55:09 -04001318 printf_warning("%s: No suitable DMA available\n", sym_name(np));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001319 goto attach_failed;
Matthew Wilcox4d85b472007-10-05 15:55:09 -04001320 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001321
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001322 if (sym_hcb_attach(shost, fw, dev->nvram))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 goto attach_failed;
1324
1325 /*
1326 * Install the interrupt handler.
1327 * If we synchonize the C code with SCRIPTS on interrupt,
1328 * we do not want to share the INTR line at all.
1329 */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001330 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX,
1331 shost)) {
Matthew Wilcox8022fbd2007-10-05 15:55:11 -04001332 printf_err("%s: request irq %u failure\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -07001333 sym_name(np), pdev->irq);
1334 goto attach_failed;
1335 }
Tony Battersbyb4090632009-01-08 12:54:45 -05001336 do_free_irq = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337
1338 /*
1339 * After SCSI devices have been opened, we cannot
1340 * reset the bus safely, so we do it here.
1341 */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001342 spin_lock_irqsave(shost->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001343 if (sym_reset_scsi_bus(np, 0))
1344 goto reset_failed;
1345
1346 /*
1347 * Start the SCRIPTS.
1348 */
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001349 sym_start_up(shost, 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350
1351 /*
1352 * Start the timer daemon
1353 */
1354 init_timer(&np->s.timer);
1355 np->s.timer.data = (unsigned long) np;
1356 np->s.timer.function = sym53c8xx_timer;
1357 np->s.lasttime=0;
1358 sym_timer (np);
1359
1360 /*
1361 * Fill Linux host instance structure
1362 * and return success.
1363 */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001364 shost->max_channel = 0;
1365 shost->this_id = np->myaddr;
1366 shost->max_id = np->maxwide ? 16 : 8;
1367 shost->max_lun = SYM_CONF_MAX_LUN;
1368 shost->unique_id = pci_resource_start(pdev, 0);
1369 shost->cmd_per_lun = SYM_CONF_MAX_TAG;
1370 shost->can_queue = (SYM_CONF_MAX_START-2);
1371 shost->sg_tablesize = SYM_CONF_MAX_SG;
1372 shost->max_cmd_len = 16;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373 BUG_ON(sym2_transport_template == NULL);
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001374 shost->transportt = sym2_transport_template;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375
Kai Makisara34996ac2007-10-05 15:54:58 -04001376 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
Matthew Wilcoxbd678452007-10-05 15:55:05 -04001377 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2)
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001378 shost->dma_boundary = 0xFFFFFF;
Kai Makisara34996ac2007-10-05 15:54:58 -04001379
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001380 spin_unlock_irqrestore(shost->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001381
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001382 return shost;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383
1384 reset_failed:
1385 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1386 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001387 spin_unlock_irqrestore(shost->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001388 attach_failed:
Tony Battersby07b9d812009-01-08 12:53:37 -05001389 printf_info("sym%d: giving up ...\n", unit);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001390 if (np)
Tony Battersbyb4090632009-01-08 12:54:45 -05001391 sym_free_resources(np, pdev, do_free_irq);
Tony Battersbya71d0352009-01-08 12:55:52 -05001392 else
1393 sym_iounmap_device(dev);
1394 if (shost)
1395 scsi_host_put(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396
1397 return NULL;
1398 }
1399
1400
1401/*
1402 * Detect and try to read SYMBIOS and TEKRAM NVRAM.
1403 */
1404#if SYM_CONF_NVRAM_SUPPORT
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001405static void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406{
1407 devp->nvram = nvp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001408 nvp->type = 0;
1409
1410 sym_read_nvram(devp, nvp);
1411}
1412#else
1413static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1414{
1415}
1416#endif /* SYM_CONF_NVRAM_SUPPORT */
1417
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001418static int sym_check_supported(struct sym_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001419{
1420 struct sym_chip *chip;
1421 struct pci_dev *pdev = device->pdev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001422 unsigned long io_port = pci_resource_start(pdev, 0);
1423 int i;
1424
1425 /*
1426 * If user excluded this chip, do not initialize it.
1427 * I hate this code so much. Must kill it.
1428 */
1429 if (io_port) {
1430 for (i = 0 ; i < 8 ; i++) {
1431 if (sym_driver_setup.excludes[i] == io_port)
1432 return -ENODEV;
1433 }
1434 }
1435
1436 /*
1437 * Check if the chip is supported. Then copy the chip description
1438 * to our device structure so we can make it match the actual device
1439 * and options.
1440 */
Matthew Wilcoxbd678452007-10-05 15:55:05 -04001441 chip = sym_lookup_chip_table(pdev->device, pdev->revision);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 if (!chip) {
1443 dev_info(&pdev->dev, "device not supported\n");
1444 return -ENODEV;
1445 }
1446 memcpy(&device->chip, chip, sizeof(device->chip));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001447
1448 return 0;
1449}
1450
1451/*
1452 * Ignore Symbios chips controlled by various RAID controllers.
1453 * These controllers set value 0x52414944 at RAM end - 16.
1454 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001455static int sym_check_raid(struct sym_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456{
1457 unsigned int ram_size, ram_val;
1458
1459 if (!device->s.ramaddr)
1460 return 0;
1461
1462 if (device->chip.features & FE_RAM8K)
1463 ram_size = 8192;
1464 else
1465 ram_size = 4096;
1466
1467 ram_val = readl(device->s.ramaddr + ram_size - 16);
1468 if (ram_val != 0x52414944)
1469 return 0;
1470
1471 dev_info(&device->pdev->dev,
1472 "not initializing, driven by RAID controller.\n");
1473 return -ENODEV;
1474}
1475
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001476static int sym_set_workarounds(struct sym_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001477{
1478 struct sym_chip *chip = &device->chip;
1479 struct pci_dev *pdev = device->pdev;
1480 u_short status_reg;
1481
1482 /*
1483 * (ITEM 12 of a DEL about the 896 I haven't yet).
1484 * We must ensure the chip will use WRITE AND INVALIDATE.
1485 * The revision number limit is for now arbitrary.
1486 */
Matthew Wilcoxbd678452007-10-05 15:55:05 -04001487 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001488 chip->features |= (FE_WRIE | FE_CLSE);
1489 }
1490
1491 /* If the chip can do Memory Write Invalidate, enable it */
1492 if (chip->features & FE_WRIE) {
1493 if (pci_set_mwi(pdev))
1494 return -ENODEV;
1495 }
1496
1497 /*
1498 * Work around for errant bit in 895A. The 66Mhz
1499 * capable bit is set erroneously. Clear this bit.
1500 * (Item 1 DEL 533)
1501 *
1502 * Make sure Config space and Features agree.
1503 *
1504 * Recall: writes are not normal to status register -
1505 * write a 1 to clear and a 0 to leave unchanged.
1506 * Can only reset bits.
1507 */
1508 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1509 if (chip->features & FE_66MHZ) {
1510 if (!(status_reg & PCI_STATUS_66MHZ))
1511 chip->features &= ~FE_66MHZ;
1512 } else {
1513 if (status_reg & PCI_STATUS_66MHZ) {
1514 status_reg = PCI_STATUS_66MHZ;
1515 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1516 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1517 }
1518 }
1519
1520 return 0;
1521}
1522
1523/*
Tony Battersby783fa732009-01-08 12:56:58 -05001524 * Map HBA registers and on-chip SRAM (if present).
Linus Torvalds1da177e2005-04-16 15:20:36 -07001525 */
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001526static int sym_iomap_device(struct sym_device *device)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001527{
Tony Battersby783fa732009-01-08 12:56:58 -05001528 struct pci_dev *pdev = device->pdev;
Matthew Wilcoxb6d105d2006-03-28 11:03:44 -05001529 struct pci_bus_region bus_addr;
Tony Battersby783fa732009-01-08 12:56:58 -05001530 int i = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001531
Yinghai Lufc279852013-12-09 22:54:40 -08001532 pcibios_resource_to_bus(pdev->bus, &bus_addr, &pdev->resource[1]);
Matthew Wilcoxb6d105d2006-03-28 11:03:44 -05001533 device->mmio_base = bus_addr.start;
1534
Tony Battersby783fa732009-01-08 12:56:58 -05001535 if (device->chip.features & FE_RAM) {
1536 /*
1537 * If the BAR is 64-bit, resource 2 will be occupied by the
1538 * upper 32 bits
1539 */
1540 if (!pdev->resource[i].flags)
1541 i++;
Yinghai Lufc279852013-12-09 22:54:40 -08001542 pcibios_resource_to_bus(pdev->bus, &bus_addr,
1543 &pdev->resource[i]);
Tony Battersby783fa732009-01-08 12:56:58 -05001544 device->ram_base = bus_addr.start;
1545 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001546
Matthew Wilcox1f61d822006-03-28 11:03:43 -05001547#ifdef CONFIG_SCSI_SYM53C8XX_MMIO
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 if (device->mmio_base)
1549 device->s.ioaddr = pci_iomap(pdev, 1,
1550 pci_resource_len(pdev, 1));
1551#endif
1552 if (!device->s.ioaddr)
1553 device->s.ioaddr = pci_iomap(pdev, 0,
1554 pci_resource_len(pdev, 0));
Tony Battersby783fa732009-01-08 12:56:58 -05001555 if (!device->s.ioaddr) {
1556 dev_err(&pdev->dev, "could not map registers; giving up.\n");
1557 return -EIO;
1558 }
1559 if (device->ram_base) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560 device->s.ramaddr = pci_iomap(pdev, i,
1561 pci_resource_len(pdev, i));
Tony Battersby783fa732009-01-08 12:56:58 -05001562 if (!device->s.ramaddr) {
1563 dev_warn(&pdev->dev,
1564 "could not map SRAM; continuing anyway.\n");
1565 device->ram_base = 0;
1566 }
1567 }
1568
1569 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001570}
1571
1572/*
1573 * The NCR PQS and PDS cards are constructed as a DEC bridge
1574 * behind which sits a proprietary NCR memory controller and
1575 * either four or two 53c875s as separate devices. We can tell
1576 * if an 875 is part of a PQS/PDS or not since if it is, it will
1577 * be on the same bus as the memory controller. In its usual
1578 * mode of operation, the 875s are slaved to the memory
1579 * controller for all transfers. To operate with the Linux
1580 * driver, the memory controller is disabled and the 875s
1581 * freed to function independently. The only wrinkle is that
1582 * the preset SCSI ID (which may be zero) must be read in from
1583 * a special configuration space register of the 875.
1584 */
1585static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
1586{
1587 int slot;
1588 u8 tmp;
1589
1590 for (slot = 0; slot < 256; slot++) {
1591 struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
1592
1593 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
1594 pci_dev_put(memc);
1595 continue;
1596 }
1597
1598 /* bit 1: allow individual 875 configuration */
1599 pci_read_config_byte(memc, 0x44, &tmp);
1600 if ((tmp & 0x2) == 0) {
1601 tmp |= 0x2;
1602 pci_write_config_byte(memc, 0x44, tmp);
1603 }
1604
1605 /* bit 2: drive individual 875 interrupts to the bus */
1606 pci_read_config_byte(memc, 0x45, &tmp);
1607 if ((tmp & 0x4) == 0) {
1608 tmp |= 0x4;
1609 pci_write_config_byte(memc, 0x45, tmp);
1610 }
1611
1612 pci_dev_put(memc);
1613 break;
1614 }
1615
1616 pci_read_config_byte(pdev, 0x84, &tmp);
1617 sym_dev->host_id = tmp;
1618}
1619
1620/*
1621 * Called before unloading the module.
1622 * Detach the host.
1623 * We have to free resources and halt the NCR chip.
1624 */
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001625static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001626{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001627 struct sym_hcb *np = sym_get_hcb(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628 printk("%s: detaching ...\n", sym_name(np));
1629
1630 del_timer_sync(&np->s.timer);
1631
1632 /*
1633 * Reset NCR chip.
1634 * We should use sym_soft_reset(), but we don't want to do
1635 * so, since we may not be safe if interrupts occur.
1636 */
1637 printk("%s: resetting chip\n", sym_name(np));
1638 OUTB(np, nc_istat, SRST);
Matthew Wilcox 53222b92005-05-20 19:15:43 +01001639 INB(np, nc_mbox1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 udelay(10);
1641 OUTB(np, nc_istat, 0);
1642
Tony Battersbyb4090632009-01-08 12:54:45 -05001643 sym_free_resources(np, pdev, 1);
Tony Battersbyd3ce65d2009-01-08 12:52:32 -05001644 scsi_host_put(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001645
1646 return 1;
1647}
1648
1649/*
1650 * Driver host template.
1651 */
1652static struct scsi_host_template sym2_template = {
1653 .module = THIS_MODULE,
1654 .name = "sym53c8xx",
1655 .info = sym53c8xx_info,
1656 .queuecommand = sym53c8xx_queue_command,
1657 .slave_alloc = sym53c8xx_slave_alloc,
1658 .slave_configure = sym53c8xx_slave_configure,
Matthew Wilcox84e203a2005-11-29 23:08:31 -05001659 .slave_destroy = sym53c8xx_slave_destroy,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660 .eh_abort_handler = sym53c8xx_eh_abort_handler,
1661 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
1662 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler,
1663 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler,
1664 .this_id = 7,
Matthew Wilcox14ac8bf2006-03-28 11:03:44 -05001665 .use_clustering = ENABLE_CLUSTERING,
1666 .max_sectors = 0xFFFF,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001667#ifdef SYM_LINUX_PROC_INFO_SUPPORT
Al Viroee127fec2013-03-31 00:10:16 -04001668 .show_info = sym_show_info,
1669#ifdef SYM_LINUX_USER_COMMAND_SUPPORT
1670 .write_info = sym_user_command,
1671#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672 .proc_name = NAME53C8XX,
1673#endif
1674};
1675
1676static int attach_count;
1677
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08001678static int sym2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001679{
1680 struct sym_device sym_dev;
1681 struct sym_nvram nvram;
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001682 struct Scsi_Host *shost;
Tony Battersbya71d0352009-01-08 12:55:52 -05001683 int do_iounmap = 0;
1684 int do_disable_device = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685
1686 memset(&sym_dev, 0, sizeof(sym_dev));
1687 memset(&nvram, 0, sizeof(nvram));
Tony Battersby783fa732009-01-08 12:56:58 -05001688 sym_dev.pdev = pdev;
1689 sym_dev.host_id = SYM_SETUP_HOST_ID;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690
1691 if (pci_enable_device(pdev))
1692 goto leave;
1693
1694 pci_set_master(pdev);
1695
1696 if (pci_request_regions(pdev, NAME53C8XX))
1697 goto disable;
1698
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699 if (sym_check_supported(&sym_dev))
1700 goto free;
1701
Tony Battersby783fa732009-01-08 12:56:58 -05001702 if (sym_iomap_device(&sym_dev))
1703 goto free;
1704 do_iounmap = 1;
1705
Tony Battersbya71d0352009-01-08 12:55:52 -05001706 if (sym_check_raid(&sym_dev)) {
1707 do_disable_device = 0; /* Don't disable the device */
1708 goto free;
1709 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001710
1711 if (sym_set_workarounds(&sym_dev))
1712 goto free;
1713
1714 sym_config_pqs(pdev, &sym_dev);
1715
1716 sym_get_nvram(&sym_dev, &nvram);
1717
Tony Battersbya71d0352009-01-08 12:55:52 -05001718 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001719 shost = sym_attach(&sym2_template, attach_count, &sym_dev);
1720 if (!shost)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001721 goto free;
1722
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001723 if (scsi_add_host(shost, &pdev->dev))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724 goto detach;
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001725 scsi_scan_host(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726
1727 attach_count++;
1728
1729 return 0;
1730
1731 detach:
1732 sym_detach(pci_get_drvdata(pdev), pdev);
1733 free:
Tony Battersbya71d0352009-01-08 12:55:52 -05001734 if (do_iounmap)
1735 sym_iounmap_device(&sym_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 pci_release_regions(pdev);
1737 disable:
Tony Battersbya71d0352009-01-08 12:55:52 -05001738 if (do_disable_device)
1739 pci_disable_device(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740 leave:
1741 return -ENODEV;
1742}
1743
Randy Dunlap864473b2007-10-29 11:20:40 -07001744static void sym2_remove(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001745{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001746 struct Scsi_Host *shost = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001747
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001748 scsi_remove_host(shost);
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001749 sym_detach(shost, pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001750 pci_release_regions(pdev);
1751 pci_disable_device(pdev);
1752
1753 attach_count--;
1754}
1755
Linas Vepstasd68cd752007-10-05 15:55:04 -04001756/**
1757 * sym2_io_error_detected() - called when PCI error is detected
1758 * @pdev: pointer to PCI device
1759 * @state: current state of the PCI slot
1760 */
1761static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev,
1762 enum pci_channel_state state)
1763{
1764 /* If slot is permanently frozen, turn everything off */
1765 if (state == pci_channel_io_perm_failure) {
1766 sym2_remove(pdev);
1767 return PCI_ERS_RESULT_DISCONNECT;
1768 }
1769
1770 disable_irq(pdev->irq);
1771 pci_disable_device(pdev);
1772
1773 /* Request that MMIO be enabled, so register dump can be taken. */
1774 return PCI_ERS_RESULT_CAN_RECOVER;
1775}
1776
1777/**
1778 * sym2_io_slot_dump - Enable MMIO and dump debug registers
1779 * @pdev: pointer to PCI device
1780 */
1781static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev)
1782{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001783 struct Scsi_Host *shost = pci_get_drvdata(pdev);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001784
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001785 sym_dump_registers(shost);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001786
1787 /* Request a slot reset. */
1788 return PCI_ERS_RESULT_NEED_RESET;
1789}
1790
1791/**
1792 * sym2_reset_workarounds - hardware-specific work-arounds
1793 *
1794 * This routine is similar to sym_set_workarounds(), except
1795 * that, at this point, we already know that the device was
Uwe Kleine-Königb5950762010-11-01 15:38:34 -04001796 * successfully initialized at least once before, and so most
Linas Vepstasd68cd752007-10-05 15:55:04 -04001797 * of the steps taken there are un-needed here.
1798 */
1799static void sym2_reset_workarounds(struct pci_dev *pdev)
1800{
Linas Vepstasd68cd752007-10-05 15:55:04 -04001801 u_short status_reg;
1802 struct sym_chip *chip;
1803
Matthew Wilcoxbd678452007-10-05 15:55:05 -04001804 chip = sym_lookup_chip_table(pdev->device, pdev->revision);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001805
1806 /* Work around for errant bit in 895A, in a fashion
1807 * similar to what is done in sym_set_workarounds().
1808 */
1809 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1810 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) {
1811 status_reg = PCI_STATUS_66MHZ;
1812 pci_write_config_word(pdev, PCI_STATUS, status_reg);
1813 pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1814 }
1815}
1816
1817/**
1818 * sym2_io_slot_reset() - called when the pci bus has been reset.
1819 * @pdev: pointer to PCI device
1820 *
1821 * Restart the card from scratch.
1822 */
1823static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev)
1824{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001825 struct Scsi_Host *shost = pci_get_drvdata(pdev);
1826 struct sym_hcb *np = sym_get_hcb(shost);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001827
1828 printk(KERN_INFO "%s: recovering from a PCI slot reset\n",
1829 sym_name(np));
1830
1831 if (pci_enable_device(pdev)) {
1832 printk(KERN_ERR "%s: Unable to enable after PCI reset\n",
1833 sym_name(np));
1834 return PCI_ERS_RESULT_DISCONNECT;
1835 }
1836
1837 pci_set_master(pdev);
1838 enable_irq(pdev->irq);
1839
1840 /* If the chip can do Memory Write Invalidate, enable it */
1841 if (np->features & FE_WRIE) {
1842 if (pci_set_mwi(pdev))
1843 return PCI_ERS_RESULT_DISCONNECT;
1844 }
1845
1846 /* Perform work-arounds, analogous to sym_set_workarounds() */
1847 sym2_reset_workarounds(pdev);
1848
1849 /* Perform host reset only on one instance of the card */
1850 if (PCI_FUNC(pdev->devfn) == 0) {
1851 if (sym_reset_scsi_bus(np, 0)) {
1852 printk(KERN_ERR "%s: Unable to reset scsi host\n",
1853 sym_name(np));
1854 return PCI_ERS_RESULT_DISCONNECT;
1855 }
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001856 sym_start_up(shost, 1);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001857 }
1858
1859 return PCI_ERS_RESULT_RECOVERED;
1860}
1861
1862/**
1863 * sym2_io_resume() - resume normal ops after PCI reset
1864 * @pdev: pointer to PCI device
1865 *
1866 * Called when the error recovery driver tells us that its
1867 * OK to resume normal operation. Use completion to allow
1868 * halted scsi ops to resume.
1869 */
1870static void sym2_io_resume(struct pci_dev *pdev)
1871{
Matthew Wilcox5111eef2007-10-05 15:55:13 -04001872 struct Scsi_Host *shost = pci_get_drvdata(pdev);
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001873 struct sym_data *sym_data = shost_priv(shost);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001874
1875 spin_lock_irq(shost->host_lock);
Matthew Wilcox99c9e0a2007-10-05 15:55:12 -04001876 if (sym_data->io_reset)
1877 complete_all(sym_data->io_reset);
Linas Vepstasd68cd752007-10-05 15:55:04 -04001878 spin_unlock_irq(shost->host_lock);
1879}
1880
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881static void sym2_get_signalling(struct Scsi_Host *shost)
1882{
1883 struct sym_hcb *np = sym_get_hcb(shost);
1884 enum spi_signal_type type;
1885
1886 switch (np->scsi_mode) {
1887 case SMODE_SE:
1888 type = SPI_SIGNAL_SE;
1889 break;
1890 case SMODE_LVD:
1891 type = SPI_SIGNAL_LVD;
1892 break;
1893 case SMODE_HVD:
1894 type = SPI_SIGNAL_HVD;
1895 break;
1896 default:
1897 type = SPI_SIGNAL_UNKNOWN;
1898 break;
1899 }
1900 spi_signalling(shost) = type;
1901}
1902
1903static void sym2_set_offset(struct scsi_target *starget, int offset)
1904{
1905 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1906 struct sym_hcb *np = sym_get_hcb(shost);
1907 struct sym_tcb *tp = &np->target[starget->id];
1908
1909 tp->tgoal.offset = offset;
1910 tp->tgoal.check_nego = 1;
1911}
1912
1913static void sym2_set_period(struct scsi_target *starget, int period)
1914{
1915 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1916 struct sym_hcb *np = sym_get_hcb(shost);
1917 struct sym_tcb *tp = &np->target[starget->id];
1918
James Bottomleye4862fe2005-05-06 13:14:48 -05001919 /* have to have DT for these transfers, but DT will also
1920 * set width, so check that this is allowed */
1921 if (period <= np->minsync && spi_width(starget))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001922 tp->tgoal.dt = 1;
1923
1924 tp->tgoal.period = period;
1925 tp->tgoal.check_nego = 1;
1926}
1927
1928static void sym2_set_width(struct scsi_target *starget, int width)
1929{
1930 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1931 struct sym_hcb *np = sym_get_hcb(shost);
1932 struct sym_tcb *tp = &np->target[starget->id];
1933
1934 /* It is illegal to have DT set on narrow transfers. If DT is
1935 * clear, we must also clear IU and QAS. */
1936 if (width == 0)
1937 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1938
1939 tp->tgoal.width = width;
1940 tp->tgoal.check_nego = 1;
1941}
1942
1943static void sym2_set_dt(struct scsi_target *starget, int dt)
1944{
1945 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1946 struct sym_hcb *np = sym_get_hcb(shost);
1947 struct sym_tcb *tp = &np->target[starget->id];
1948
1949 /* We must clear QAS and IU if DT is clear */
1950 if (dt)
1951 tp->tgoal.dt = 1;
1952 else
1953 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1954 tp->tgoal.check_nego = 1;
1955}
1956
Matthew Wilcox8b2f8132005-11-29 23:08:38 -05001957#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001958static void sym2_set_iu(struct scsi_target *starget, int iu)
1959{
1960 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1961 struct sym_hcb *np = sym_get_hcb(shost);
1962 struct sym_tcb *tp = &np->target[starget->id];
1963
1964 if (iu)
1965 tp->tgoal.iu = tp->tgoal.dt = 1;
1966 else
1967 tp->tgoal.iu = 0;
1968 tp->tgoal.check_nego = 1;
1969}
1970
1971static void sym2_set_qas(struct scsi_target *starget, int qas)
1972{
1973 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1974 struct sym_hcb *np = sym_get_hcb(shost);
1975 struct sym_tcb *tp = &np->target[starget->id];
1976
1977 if (qas)
1978 tp->tgoal.dt = tp->tgoal.qas = 1;
1979 else
1980 tp->tgoal.qas = 0;
1981 tp->tgoal.check_nego = 1;
1982}
Matthew Wilcox8b2f8132005-11-29 23:08:38 -05001983#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07001984
1985static struct spi_function_template sym2_transport_functions = {
1986 .set_offset = sym2_set_offset,
1987 .show_offset = 1,
1988 .set_period = sym2_set_period,
1989 .show_period = 1,
1990 .set_width = sym2_set_width,
1991 .show_width = 1,
1992 .set_dt = sym2_set_dt,
1993 .show_dt = 1,
Matthew Wilcox8b2f8132005-11-29 23:08:38 -05001994#if 0
Linus Torvalds1da177e2005-04-16 15:20:36 -07001995 .set_iu = sym2_set_iu,
1996 .show_iu = 1,
1997 .set_qas = sym2_set_qas,
1998 .show_qas = 1,
Matthew Wilcox8b2f8132005-11-29 23:08:38 -05001999#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -07002000 .get_signalling = sym2_get_signalling,
2001};
2002
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08002003static struct pci_device_id sym2_id_table[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002004 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
2005 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2006 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
2007 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2008 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
2009 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2010 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
2011 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2012 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
2013 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
2014 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
2015 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2016 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
Grant Grundlerb2b3c122006-07-17 07:22:45 -06002017 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL },
Linus Torvalds1da177e2005-04-16 15:20:36 -07002018 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
2019 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2020 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
2021 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2022 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
2023 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2024 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
2025 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2026 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
Chip Coldwell147e5052007-05-23 14:41:38 -07002027 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
2029 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2030 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
2031 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2032 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
2033 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2034 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
2035 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2036 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
2037 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
2038 { 0, }
2039};
2040
2041MODULE_DEVICE_TABLE(pci, sym2_id_table);
2042
Stephen Hemmingera55b2d22012-09-07 09:33:16 -07002043static const struct pci_error_handlers sym2_err_handler = {
Linas Vepstasd68cd752007-10-05 15:55:04 -04002044 .error_detected = sym2_io_error_detected,
2045 .mmio_enabled = sym2_io_slot_dump,
2046 .slot_reset = sym2_io_slot_reset,
2047 .resume = sym2_io_resume,
2048};
2049
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050static struct pci_driver sym2_driver = {
2051 .name = NAME53C8XX,
2052 .id_table = sym2_id_table,
2053 .probe = sym2_probe,
Randy Dunlap864473b2007-10-29 11:20:40 -07002054 .remove = sym2_remove,
Linas Vepstasd68cd752007-10-05 15:55:04 -04002055 .err_handler = &sym2_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002056};
2057
2058static int __init sym2_init(void)
2059{
2060 int error;
2061
2062 sym2_setup_params();
2063 sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
2064 if (!sym2_transport_template)
2065 return -ENODEV;
2066
2067 error = pci_register_driver(&sym2_driver);
2068 if (error)
2069 spi_release_transport(sym2_transport_template);
2070 return error;
2071}
2072
2073static void __exit sym2_exit(void)
2074{
2075 pci_unregister_driver(&sym2_driver);
2076 spi_release_transport(sym2_transport_template);
2077}
2078
2079module_init(sym2_init);
2080module_exit(sym2_exit);