1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56#include <linux/module.h>
57#include <linux/reboot.h>
58#include <linux/spinlock.h>
59#include <linux/interrupt.h>
60#include <linux/moduleparam.h>
61#include <linux/errno.h>
62#include <linux/types.h>
63#include <linux/delay.h>
64#include <linux/pci.h>
65#include <linux/time.h>
66#include <linux/mutex.h>
67#include <linux/slab.h>
68#include <asm/io.h>
69#include <asm/irq.h>
70#include <asm/uaccess.h>
71#include <scsi/scsi.h>
72#include <scsi/scsi_host.h>
73#include <scsi/scsi_tcq.h>
74#include <scsi/scsi_cmnd.h>
75#include "3w-sas.h"
76
77
78#define TW_DRIVER_VERSION "3.26.02.000"
79static DEFINE_MUTEX(twl_chrdev_mutex);
80static TW_Device_Extension *twl_device_extension_list[TW_MAX_SLOT];
81static unsigned int twl_device_extension_count;
82static int twl_major = -1;
83extern struct timezone sys_tz;
84
85
86MODULE_AUTHOR ("LSI");
87MODULE_DESCRIPTION ("LSI 3ware SAS/SATA-RAID Linux Driver");
88MODULE_LICENSE("GPL");
89MODULE_VERSION(TW_DRIVER_VERSION);
90
91static int use_msi;
92module_param(use_msi, int, S_IRUGO);
93MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
94
95
96static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset);
97
98
99
100
101static ssize_t twl_sysfs_aen_read(struct file *filp, struct kobject *kobj,
102 struct bin_attribute *bin_attr,
103 char *outbuf, loff_t offset, size_t count)
104{
105 struct device *dev = container_of(kobj, struct device, kobj);
106 struct Scsi_Host *shost = class_to_shost(dev);
107 TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
108 unsigned long flags = 0;
109 ssize_t ret;
110
111 if (!capable(CAP_SYS_ADMIN))
112 return -EACCES;
113
114 spin_lock_irqsave(tw_dev->host->host_lock, flags);
115 ret = memory_read_from_buffer(outbuf, count, &offset, tw_dev->event_queue[0], sizeof(TW_Event) * TW_Q_LENGTH);
116 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
117
118 return ret;
119}
120
121
122static struct bin_attribute twl_sysfs_aen_read_attr = {
123 .attr = {
124 .name = "3ware_aen_read",
125 .mode = S_IRUSR,
126 },
127 .size = 0,
128 .read = twl_sysfs_aen_read
129};
130
131
132static ssize_t twl_sysfs_compat_info(struct file *filp, struct kobject *kobj,
133 struct bin_attribute *bin_attr,
134 char *outbuf, loff_t offset, size_t count)
135{
136 struct device *dev = container_of(kobj, struct device, kobj);
137 struct Scsi_Host *shost = class_to_shost(dev);
138 TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata;
139 unsigned long flags = 0;
140 ssize_t ret;
141
142 if (!capable(CAP_SYS_ADMIN))
143 return -EACCES;
144
145 spin_lock_irqsave(tw_dev->host->host_lock, flags);
146 ret = memory_read_from_buffer(outbuf, count, &offset, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
147 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
148
149 return ret;
150}
151
152
153static struct bin_attribute twl_sysfs_compat_info_attr = {
154 .attr = {
155 .name = "3ware_compat_info",
156 .mode = S_IRUSR,
157 },
158 .size = 0,
159 .read = twl_sysfs_compat_info
160};
161
162
163static ssize_t twl_show_stats(struct device *dev,
164 struct device_attribute *attr, char *buf)
165{
166 struct Scsi_Host *host = class_to_shost(dev);
167 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
168 unsigned long flags = 0;
169 ssize_t len;
170
171 spin_lock_irqsave(tw_dev->host->host_lock, flags);
172 len = snprintf(buf, PAGE_SIZE, "3w-sas Driver version: %s\n"
173 "Current commands posted: %4d\n"
174 "Max commands posted: %4d\n"
175 "Last sgl length: %4d\n"
176 "Max sgl length: %4d\n"
177 "Last sector count: %4d\n"
178 "Max sector count: %4d\n"
179 "SCSI Host Resets: %4d\n"
180 "AEN's: %4d\n",
181 TW_DRIVER_VERSION,
182 tw_dev->posted_request_count,
183 tw_dev->max_posted_request_count,
184 tw_dev->sgl_entries,
185 tw_dev->max_sgl_entries,
186 tw_dev->sector_count,
187 tw_dev->max_sector_count,
188 tw_dev->num_resets,
189 tw_dev->aen_count);
190 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
191 return len;
192}
193
194
195static struct device_attribute twl_host_stats_attr = {
196 .attr = {
197 .name = "3ware_stats",
198 .mode = S_IRUGO,
199 },
200 .show = twl_show_stats
201};
202
203
204static struct device_attribute *twl_host_attrs[] = {
205 &twl_host_stats_attr,
206 NULL,
207};
208
209
210static char *twl_aen_severity_lookup(unsigned char severity_code)
211{
212 char *retval = NULL;
213
214 if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) ||
215 (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG))
216 goto out;
217
218 retval = twl_aen_severity_table[severity_code];
219out:
220 return retval;
221}
222
223
224static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
225{
226 u32 local_time;
227 struct timeval time;
228 TW_Event *event;
229 unsigned short aen;
230 char host[16];
231 char *error_str;
232
233 tw_dev->aen_count++;
234
235
236 event = tw_dev->event_queue[tw_dev->error_index];
237
238 host[0] = '\0';
239 if (tw_dev->host)
240 sprintf(host, " scsi%d:", tw_dev->host->host_no);
241
242 aen = le16_to_cpu(header->status_block.error);
243 memset(event, 0, sizeof(TW_Event));
244
245 event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
246 do_gettimeofday(&time);
247 local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
248 event->time_stamp_sec = local_time;
249 event->aen_code = aen;
250 event->retrieved = TW_AEN_NOT_RETRIEVED;
251 event->sequence_id = tw_dev->error_sequence_id;
252 tw_dev->error_sequence_id++;
253
254
255 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]);
256
257 header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0';
258 event->parameter_len = strlen(header->err_specific_desc);
259 memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str));
260 if (event->severity != TW_AEN_SEVERITY_DEBUG)
261 printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
262 host,
263 twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
264 TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str,
265 header->err_specific_desc);
266 else
267 tw_dev->aen_count--;
268
269 tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
270}
271
272
273static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
274{
275 dma_addr_t command_que_value;
276
277 command_que_value = tw_dev->command_packet_phys[request_id];
278 command_que_value += TW_COMMAND_OFFSET;
279
280
281 writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev));
282
283 writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev));
284
285 tw_dev->state[request_id] = TW_S_POSTED;
286 tw_dev->posted_request_count++;
287 if (tw_dev->posted_request_count > tw_dev->max_posted_request_count)
288 tw_dev->max_posted_request_count = tw_dev->posted_request_count;
289
290 return 0;
291}
292
293
294static int twl_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id)
295{
296 int use_sg;
297 struct scsi_cmnd *cmd = tw_dev->srb[request_id];
298
299 use_sg = scsi_dma_map(cmd);
300 if (!use_sg)
301 return 0;
302 else if (use_sg < 0) {
303 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Failed to map scatter gather list");
304 return 0;
305 }
306
307 cmd->SCp.phase = TW_PHASE_SGLIST;
308 cmd->SCp.have_data_in = use_sg;
309
310 return use_sg;
311}
312
313
314static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry_ISO *sglistarg)
315{
316 TW_Command_Full *full_command_packet;
317 TW_Command_Apache *command_packet;
318 int i, sg_count;
319 struct scsi_cmnd *srb = NULL;
320 struct scatterlist *sglist = NULL, *sg;
321 int retval = 1;
322
323 if (tw_dev->srb[request_id]) {
324 srb = tw_dev->srb[request_id];
325 if (scsi_sglist(srb))
326 sglist = scsi_sglist(srb);
327 }
328
329
330 full_command_packet = tw_dev->command_packet_virt[request_id];
331 full_command_packet->header.header_desc.size_header = 128;
332 full_command_packet->header.status_block.error = 0;
333 full_command_packet->header.status_block.severity__reserved = 0;
334
335 command_packet = &full_command_packet->command.newcommand;
336 command_packet->status = 0;
337 command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI);
338
339
340 if (!cdb)
341 memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN);
342 else
343 memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN);
344
345 if (srb) {
346 command_packet->unit = srb->device->id;
347 command_packet->request_id__lunl =
348 cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id));
349 } else {
350 command_packet->request_id__lunl =
351 cpu_to_le16(TW_REQ_LUN_IN(0, request_id));
352 command_packet->unit = 0;
353 }
354
355 command_packet->sgl_offset = 16;
356
357 if (!sglistarg) {
358
359 if (scsi_sg_count(srb)) {
360 sg_count = twl_map_scsi_sg_data(tw_dev, request_id);
361 if (sg_count == 0)
362 goto out;
363
364 scsi_for_each_sg(srb, sg, sg_count, i) {
365 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
366 command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg));
367 }
368 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
369 }
370 } else {
371
372 for (i = 0; i < use_sg; i++) {
373 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address);
374 command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length);
375 }
376 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg));
377 }
378
379
380 if (srb) {
381 tw_dev->sector_count = scsi_bufflen(srb) / 512;
382 if (tw_dev->sector_count > tw_dev->max_sector_count)
383 tw_dev->max_sector_count = tw_dev->sector_count;
384 tw_dev->sgl_entries = scsi_sg_count(srb);
385 if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
386 tw_dev->max_sgl_entries = tw_dev->sgl_entries;
387 }
388
389
390 retval = twl_post_command_packet(tw_dev, request_id);
391
392out:
393 return retval;
394}
395
396
397static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
398{
399 char cdb[TW_MAX_CDB_LEN];
400 TW_SG_Entry_ISO sglist[1];
401 TW_Command_Full *full_command_packet;
402 int retval = 1;
403
404 full_command_packet = tw_dev->command_packet_virt[request_id];
405 memset(full_command_packet, 0, sizeof(TW_Command_Full));
406
407
408 memset(&cdb, 0, TW_MAX_CDB_LEN);
409 cdb[0] = REQUEST_SENSE;
410 cdb[4] = TW_ALLOCATION_LENGTH;
411
412
413 memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
414 sglist[0].length = TW_SECTOR_SIZE;
415 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
416
417
418 tw_dev->srb[request_id] = NULL;
419
420
421 if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
422 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue");
423 goto out;
424 }
425 retval = 0;
426out:
427 return retval;
428}
429
430
431static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
432{
433 u32 schedulertime;
434 struct timeval utc;
435 TW_Command_Full *full_command_packet;
436 TW_Command *command_packet;
437 TW_Param_Apache *param;
438 u32 local_time;
439
440
441 full_command_packet = tw_dev->command_packet_virt[request_id];
442 memset(full_command_packet, 0, sizeof(TW_Command_Full));
443 command_packet = &full_command_packet->command.oldcommand;
444 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
445 command_packet->request_id = request_id;
446 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
447 command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
448 command_packet->size = TW_COMMAND_SIZE;
449 command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
450
451
452 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
453 memset(param, 0, TW_SECTOR_SIZE);
454 param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000);
455 param->parameter_id = cpu_to_le16(0x3);
456 param->parameter_size_bytes = cpu_to_le16(4);
457
458
459
460 do_gettimeofday(&utc);
461 local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
462 schedulertime = local_time - (3 * 86400);
463 schedulertime = cpu_to_le32(schedulertime % 604800);
464
465 memcpy(param->data, &schedulertime, sizeof(u32));
466
467
468 tw_dev->srb[request_id] = NULL;
469
470
471 twl_post_command_packet(tw_dev, request_id);
472}
473
474
475static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
476{
477 *request_id = tw_dev->free_queue[tw_dev->free_head];
478 tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
479 tw_dev->state[*request_id] = TW_S_STARTED;
480}
481
482
483static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id)
484{
485 tw_dev->free_queue[tw_dev->free_tail] = request_id;
486 tw_dev->state[request_id] = TW_S_FINISHED;
487 tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
488}
489
490
491static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id)
492{
493 TW_Command_Full *full_command_packet;
494 TW_Command *command_packet;
495 TW_Command_Apache_Header *header;
496 unsigned short aen;
497 int retval = 1;
498
499 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
500 tw_dev->posted_request_count--;
501 aen = le16_to_cpu(header->status_block.error);
502 full_command_packet = tw_dev->command_packet_virt[request_id];
503 command_packet = &full_command_packet->command.oldcommand;
504
505
506 if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) {
507
508 if (twl_aen_read_queue(tw_dev, request_id))
509 goto out2;
510 else {
511 retval = 0;
512 goto out;
513 }
514 }
515
516 switch (aen) {
517 case TW_AEN_QUEUE_EMPTY:
518
519 break;
520 case TW_AEN_SYNC_TIME_WITH_HOST:
521 twl_aen_sync_time(tw_dev, request_id);
522 retval = 0;
523 goto out;
524 default:
525 twl_aen_queue_event(tw_dev, header);
526
527
528 if (twl_aen_read_queue(tw_dev, request_id))
529 goto out2;
530 else {
531 retval = 0;
532 goto out;
533 }
534 }
535 retval = 0;
536out2:
537 tw_dev->state[request_id] = TW_S_COMPLETED;
538 twl_free_request_id(tw_dev, request_id);
539 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
540out:
541 return retval;
542}
543
544
545static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
546{
547 unsigned long before;
548 dma_addr_t mfa;
549 u32 regh, regl;
550 u32 response;
551 int retval = 1;
552 int found = 0;
553
554 before = jiffies;
555
556 while (!found) {
557 if (sizeof(dma_addr_t) > 4) {
558 regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
559 regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
560 mfa = ((u64)regh << 32) | regl;
561 } else
562 mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
563
564 response = (u32)mfa;
565
566 if (TW_RESID_OUT(response) == request_id)
567 found = 1;
568
569 if (time_after(jiffies, before + HZ * seconds))
570 goto out;
571
572 msleep(50);
573 }
574 retval = 0;
575out:
576 return retval;
577}
578
579
580static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
581{
582 int request_id = 0;
583 char cdb[TW_MAX_CDB_LEN];
584 TW_SG_Entry_ISO sglist[1];
585 int finished = 0, count = 0;
586 TW_Command_Full *full_command_packet;
587 TW_Command_Apache_Header *header;
588 unsigned short aen;
589 int first_reset = 0, queue = 0, retval = 1;
590
591 if (no_check_reset)
592 first_reset = 0;
593 else
594 first_reset = 1;
595
596 full_command_packet = tw_dev->command_packet_virt[request_id];
597 memset(full_command_packet, 0, sizeof(TW_Command_Full));
598
599
600 memset(&cdb, 0, TW_MAX_CDB_LEN);
601 cdb[0] = REQUEST_SENSE;
602 cdb[4] = TW_ALLOCATION_LENGTH;
603
604
605 memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
606 sglist[0].length = TW_SECTOR_SIZE;
607 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
608
609
610 tw_dev->srb[request_id] = NULL;
611
612 do {
613
614 if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
615 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense");
616 goto out;
617 }
618
619
620 if (twl_poll_response(tw_dev, request_id, 30)) {
621 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue");
622 tw_dev->posted_request_count--;
623 goto out;
624 }
625
626 tw_dev->posted_request_count--;
627 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
628 aen = le16_to_cpu(header->status_block.error);
629 queue = 0;
630 count++;
631
632 switch (aen) {
633 case TW_AEN_QUEUE_EMPTY:
634 if (first_reset != 1)
635 goto out;
636 else
637 finished = 1;
638 break;
639 case TW_AEN_SOFT_RESET:
640 if (first_reset == 0)
641 first_reset = 1;
642 else
643 queue = 1;
644 break;
645 case TW_AEN_SYNC_TIME_WITH_HOST:
646 break;
647 default:
648 queue = 1;
649 }
650
651
652 if (queue)
653 twl_aen_queue_event(tw_dev, header);
654 } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN));
655
656 if (count == TW_MAX_AEN_DRAIN)
657 goto out;
658
659 retval = 0;
660out:
661 tw_dev->state[request_id] = TW_S_INITIAL;
662 return retval;
663}
664
665
666static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
667{
668 int i;
669 dma_addr_t dma_handle;
670 unsigned long *cpu_addr;
671 int retval = 1;
672
673 cpu_addr = pci_zalloc_consistent(tw_dev->tw_pci_dev, size * TW_Q_LENGTH,
674 &dma_handle);
675 if (!cpu_addr) {
676 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
677 goto out;
678 }
679
680 for (i = 0; i < TW_Q_LENGTH; i++) {
681 switch(which) {
682 case 0:
683 tw_dev->command_packet_phys[i] = dma_handle+(i*size);
684 tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size));
685 break;
686 case 1:
687 tw_dev->generic_buffer_phys[i] = dma_handle+(i*size);
688 tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
689 break;
690 case 2:
691 tw_dev->sense_buffer_phys[i] = dma_handle+(i*size);
692 tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size));
693 break;
694 }
695 }
696 retval = 0;
697out:
698 return retval;
699}
700
701
702static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length)
703{
704 TW_Command *oldcommand;
705 TW_Command_Apache *newcommand;
706 TW_SG_Entry_ISO *sgl;
707 unsigned int pae = 0;
708
709 if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
710 pae = 1;
711
712 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
713 newcommand = &full_command_packet->command.newcommand;
714 newcommand->request_id__lunl =
715 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
716 if (length) {
717 newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
718 newcommand->sg_list[0].length = TW_CPU_TO_SGL(length);
719 }
720 newcommand->sgl_entries__lunh =
721 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0));
722 } else {
723 oldcommand = &full_command_packet->command.oldcommand;
724 oldcommand->request_id = request_id;
725
726 if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) {
727
728 sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0));
729 sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
730 sgl->length = TW_CPU_TO_SGL(length);
731 oldcommand->size += pae;
732 oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0;
733 }
734 }
735}
736
737
738
739static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
740{
741 long timeout;
742 unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
743 dma_addr_t dma_handle;
744 int request_id = 0;
745 TW_Ioctl_Driver_Command driver_command;
746 struct inode *inode = file_inode(file);
747 TW_Ioctl_Buf_Apache *tw_ioctl;
748 TW_Command_Full *full_command_packet;
749 TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
750 int retval = -EFAULT;
751 void __user *argp = (void __user *)arg;
752
753 mutex_lock(&twl_chrdev_mutex);
754
755
756 if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
757 retval = -EINTR;
758 goto out;
759 }
760
761
762 if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))
763 goto out2;
764
765
766 if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {
767 retval = -EINVAL;
768 goto out2;
769 }
770
771
772 data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;
773
774
775 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, &dma_handle, GFP_KERNEL);
776 if (!cpu_addr) {
777 retval = -ENOMEM;
778 goto out2;
779 }
780
781 tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr;
782
783
784 if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))
785 goto out3;
786
787
788 switch (cmd) {
789 case TW_IOCTL_FIRMWARE_PASS_THROUGH:
790 spin_lock_irqsave(tw_dev->host->host_lock, flags);
791 twl_get_request_id(tw_dev, &request_id);
792
793
794 tw_dev->srb[request_id] = NULL;
795
796
797 tw_dev->chrdev_request_id = request_id;
798
799 full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command;
800
801
802 twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted);
803
804 memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full));
805
806
807 twl_post_command_packet(tw_dev, request_id);
808 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
809
810 timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
811
812
813 timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
814
815
816 if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
817
818 printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
819 tw_dev->host->host_no, TW_DRIVER, 0x6,
820 cmd);
821 retval = -EIO;
822 twl_reset_device_extension(tw_dev, 1);
823 goto out3;
824 }
825
826
827 memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
828
829
830 spin_lock_irqsave(tw_dev->host->host_lock, flags);
831 tw_dev->posted_request_count--;
832 tw_dev->state[request_id] = TW_S_COMPLETED;
833 twl_free_request_id(tw_dev, request_id);
834 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
835 break;
836 default:
837 retval = -ENOTTY;
838 goto out3;
839 }
840
841
842 if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0)
843 retval = 0;
844out3:
845
846 dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
847out2:
848 mutex_unlock(&tw_dev->ioctl_lock);
849out:
850 mutex_unlock(&twl_chrdev_mutex);
851 return retval;
852}
853
854
855static int twl_chrdev_open(struct inode *inode, struct file *file)
856{
857 unsigned int minor_number;
858 int retval = -ENODEV;
859
860 if (!capable(CAP_SYS_ADMIN)) {
861 retval = -EACCES;
862 goto out;
863 }
864
865 minor_number = iminor(inode);
866 if (minor_number >= twl_device_extension_count)
867 goto out;
868 retval = 0;
869out:
870 return retval;
871}
872
873
874static const struct file_operations twl_fops = {
875 .owner = THIS_MODULE,
876 .unlocked_ioctl = twl_chrdev_ioctl,
877 .open = twl_chrdev_open,
878 .release = NULL,
879 .llseek = noop_llseek,
880};
881
882
883static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host)
884{
885 TW_Command_Apache_Header *header;
886 TW_Command_Full *full_command_packet;
887 unsigned short error;
888 char *error_str;
889 int retval = 1;
890
891 header = tw_dev->sense_buffer_virt[i];
892 full_command_packet = tw_dev->command_packet_virt[request_id];
893
894
895 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]);
896
897
898 error = le16_to_cpu(header->status_block.error);
899 if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) {
900 if (print_host)
901 printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
902 tw_dev->host->host_no,
903 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
904 header->status_block.error,
905 error_str,
906 header->err_specific_desc);
907 else
908 printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n",
909 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
910 header->status_block.error,
911 error_str,
912 header->err_specific_desc);
913 }
914
915 if (copy_sense) {
916 memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH);
917 tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
918 goto out;
919 }
920out:
921 return retval;
922}
923
924
925static void twl_free_device_extension(TW_Device_Extension *tw_dev)
926{
927 if (tw_dev->command_packet_virt[0])
928 pci_free_consistent(tw_dev->tw_pci_dev,
929 sizeof(TW_Command_Full)*TW_Q_LENGTH,
930 tw_dev->command_packet_virt[0],
931 tw_dev->command_packet_phys[0]);
932
933 if (tw_dev->generic_buffer_virt[0])
934 pci_free_consistent(tw_dev->tw_pci_dev,
935 TW_SECTOR_SIZE*TW_Q_LENGTH,
936 tw_dev->generic_buffer_virt[0],
937 tw_dev->generic_buffer_phys[0]);
938
939 if (tw_dev->sense_buffer_virt[0])
940 pci_free_consistent(tw_dev->tw_pci_dev,
941 sizeof(TW_Command_Apache_Header)*
942 TW_Q_LENGTH,
943 tw_dev->sense_buffer_virt[0],
944 tw_dev->sense_buffer_phys[0]);
945
946 kfree(tw_dev->event_queue[0]);
947}
948
949
950static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
951{
952 TW_Command_Full *full_command_packet;
953 TW_Command *command_packet;
954 TW_Param_Apache *param;
955 void *retval = NULL;
956
957
958 full_command_packet = tw_dev->command_packet_virt[request_id];
959 memset(full_command_packet, 0, sizeof(TW_Command_Full));
960 command_packet = &full_command_packet->command.oldcommand;
961
962 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
963 command_packet->size = TW_COMMAND_SIZE;
964 command_packet->request_id = request_id;
965 command_packet->byte6_offset.block_count = cpu_to_le16(1);
966
967
968 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
969 memset(param, 0, TW_SECTOR_SIZE);
970 param->table_id = cpu_to_le16(table_id | 0x8000);
971 param->parameter_id = cpu_to_le16(parameter_id);
972 param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
973
974 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
975 command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
976
977
978 twl_post_command_packet(tw_dev, request_id);
979
980
981 if (twl_poll_response(tw_dev, request_id, 30))
982 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param")
983 else
984 retval = (void *)&(param->data[0]);
985
986 tw_dev->posted_request_count--;
987 tw_dev->state[request_id] = TW_S_INITIAL;
988
989 return retval;
990}
991
992
993static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits,
994 u32 set_features, unsigned short current_fw_srl,
995 unsigned short current_fw_arch_id,
996 unsigned short current_fw_branch,
997 unsigned short current_fw_build,
998 unsigned short *fw_on_ctlr_srl,
999 unsigned short *fw_on_ctlr_arch_id,
1000 unsigned short *fw_on_ctlr_branch,
1001 unsigned short *fw_on_ctlr_build,
1002 u32 *init_connect_result)
1003{
1004 TW_Command_Full *full_command_packet;
1005 TW_Initconnect *tw_initconnect;
1006 int request_id = 0, retval = 1;
1007
1008
1009 full_command_packet = tw_dev->command_packet_virt[request_id];
1010 memset(full_command_packet, 0, sizeof(TW_Command_Full));
1011 full_command_packet->header.header_desc.size_header = 128;
1012
1013 tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
1014 tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
1015 tw_initconnect->request_id = request_id;
1016 tw_initconnect->message_credits = cpu_to_le16(message_credits);
1017 tw_initconnect->features = set_features;
1018
1019
1020 tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0;
1021
1022 tw_initconnect->features = cpu_to_le32(tw_initconnect->features);
1023
1024 if (set_features & TW_EXTENDED_INIT_CONNECT) {
1025 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
1026 tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl);
1027 tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
1028 tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
1029 tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
1030 } else
1031 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
1032
1033
1034 twl_post_command_packet(tw_dev, request_id);
1035
1036
1037 if (twl_poll_response(tw_dev, request_id, 30)) {
1038 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x8, "No valid response during init connection");
1039 } else {
1040 if (set_features & TW_EXTENDED_INIT_CONNECT) {
1041 *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl);
1042 *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id);
1043 *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch);
1044 *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build);
1045 *init_connect_result = le32_to_cpu(tw_initconnect->result);
1046 }
1047 retval = 0;
1048 }
1049
1050 tw_dev->posted_request_count--;
1051 tw_dev->state[request_id] = TW_S_INITIAL;
1052
1053 return retval;
1054}
1055
1056
1057static int twl_initialize_device_extension(TW_Device_Extension *tw_dev)
1058{
1059 int i, retval = 1;
1060
1061
1062 if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) {
1063 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x9, "Command packet memory allocation failed");
1064 goto out;
1065 }
1066
1067
1068 if (twl_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) {
1069 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Generic memory allocation failed");
1070 goto out;
1071 }
1072
1073
1074 if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Apache_Header), 2)) {
1075 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xb, "Sense buffer allocation failed");
1076 goto out;
1077 }
1078
1079
1080 tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
1081 if (!tw_dev->event_queue[0]) {
1082 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "Event info memory allocation failed");
1083 goto out;
1084 }
1085
1086 for (i = 0; i < TW_Q_LENGTH; i++) {
1087 tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
1088 tw_dev->free_queue[i] = i;
1089 tw_dev->state[i] = TW_S_INITIAL;
1090 }
1091
1092 tw_dev->free_head = TW_Q_START;
1093 tw_dev->free_tail = TW_Q_START;
1094 tw_dev->error_sequence_id = 1;
1095 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1096
1097 mutex_init(&tw_dev->ioctl_lock);
1098 init_waitqueue_head(&tw_dev->ioctl_wqueue);
1099
1100 retval = 0;
1101out:
1102 return retval;
1103}
1104
1105
1106static void twl_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
1107{
1108 struct scsi_cmnd *cmd = tw_dev->srb[request_id];
1109
1110 if (cmd->SCp.phase == TW_PHASE_SGLIST)
1111 scsi_dma_unmap(cmd);
1112}
1113
1114
1115static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev)
1116{
1117 int retval = 1;
1118 u32 request_id, doorbell;
1119
1120
1121 doorbell = readl(TWL_HOBDB_REG_ADDR(tw_dev));
1122
1123
1124 if (doorbell & TWL_DOORBELL_CONTROLLER_ERROR) {
1125 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "Microcontroller Error: clearing");
1126 goto out;
1127 }
1128
1129
1130 if (doorbell & TWL_DOORBELL_ATTENTION_INTERRUPT) {
1131 if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) {
1132 twl_get_request_id(tw_dev, &request_id);
1133 if (twl_aen_read_queue(tw_dev, request_id)) {
1134 tw_dev->state[request_id] = TW_S_COMPLETED;
1135 twl_free_request_id(tw_dev, request_id);
1136 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
1137 }
1138 }
1139 }
1140
1141 retval = 0;
1142out:
1143
1144 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1145
1146
1147 readl(TWL_HOBDBC_REG_ADDR(tw_dev));
1148
1149 return retval;
1150}
1151
1152
1153static irqreturn_t twl_interrupt(int irq, void *dev_instance)
1154{
1155 TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
1156 int i, handled = 0, error = 0;
1157 dma_addr_t mfa = 0;
1158 u32 reg, regl, regh, response, request_id = 0;
1159 struct scsi_cmnd *cmd;
1160 TW_Command_Full *full_command_packet;
1161
1162 spin_lock(tw_dev->host->host_lock);
1163
1164
1165 reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
1166
1167
1168 if (!(reg & TWL_HISTATUS_VALID_INTERRUPT))
1169 goto twl_interrupt_bail;
1170
1171 handled = 1;
1172
1173
1174 if (test_bit(TW_IN_RESET, &tw_dev->flags))
1175 goto twl_interrupt_bail;
1176
1177
1178 if (reg & TWL_HISTATUS_ATTENTION_INTERRUPT) {
1179 if (twl_handle_attention_interrupt(tw_dev)) {
1180 TWL_MASK_INTERRUPTS(tw_dev);
1181 goto twl_interrupt_bail;
1182 }
1183 }
1184
1185
1186 while (reg & TWL_HISTATUS_RESPONSE_INTERRUPT) {
1187 if (sizeof(dma_addr_t) > 4) {
1188 regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
1189 regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
1190 mfa = ((u64)regh << 32) | regl;
1191 } else
1192 mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
1193
1194 error = 0;
1195 response = (u32)mfa;
1196
1197
1198 if (!TW_NOTMFA_OUT(response)) {
1199 for (i=0;i<TW_Q_LENGTH;i++) {
1200 if (tw_dev->sense_buffer_phys[i] == mfa) {
1201 request_id = le16_to_cpu(tw_dev->sense_buffer_virt[i]->header_desc.request_id);
1202 if (tw_dev->srb[request_id] != NULL)
1203 error = twl_fill_sense(tw_dev, i, request_id, 1, 1);
1204 else {
1205
1206 if (request_id != tw_dev->chrdev_request_id)
1207 error = twl_fill_sense(tw_dev, i, request_id, 0, 1);
1208 else
1209 memcpy(tw_dev->command_packet_virt[request_id], tw_dev->sense_buffer_virt[i], sizeof(TW_Command_Apache_Header));
1210 }
1211
1212
1213 writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
1214 writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
1215 break;
1216 }
1217 }
1218 } else
1219 request_id = TW_RESID_OUT(response);
1220
1221 full_command_packet = tw_dev->command_packet_virt[request_id];
1222
1223
1224 if (tw_dev->state[request_id] != TW_S_POSTED) {
1225 if (tw_dev->srb[request_id] != NULL) {
1226 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Received a request id that wasn't posted");
1227 TWL_MASK_INTERRUPTS(tw_dev);
1228 goto twl_interrupt_bail;
1229 }
1230 }
1231
1232
1233 if (tw_dev->srb[request_id] == NULL) {
1234 if (request_id != tw_dev->chrdev_request_id) {
1235 if (twl_aen_complete(tw_dev, request_id))
1236 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "Error completing AEN during attention interrupt");
1237 } else {
1238 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1239 wake_up(&tw_dev->ioctl_wqueue);
1240 }
1241 } else {
1242 cmd = tw_dev->srb[request_id];
1243
1244 if (!error)
1245 cmd->result = (DID_OK << 16);
1246
1247
1248 if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
1249 if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
1250 scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
1251 }
1252
1253
1254 tw_dev->state[request_id] = TW_S_COMPLETED;
1255 twl_free_request_id(tw_dev, request_id);
1256 tw_dev->posted_request_count--;
1257 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
1258 twl_unmap_scsi_data(tw_dev, request_id);
1259 }
1260
1261
1262 reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
1263 }
1264
1265twl_interrupt_bail:
1266 spin_unlock(tw_dev->host->host_lock);
1267 return IRQ_RETVAL(handled);
1268}
1269
1270
1271static int twl_poll_register(TW_Device_Extension *tw_dev, void *reg, u32 value, u32 result, int seconds)
1272{
1273 unsigned long before;
1274 int retval = 1;
1275 u32 reg_value;
1276
1277 reg_value = readl(reg);
1278 before = jiffies;
1279
1280 while ((reg_value & value) != result) {
1281 reg_value = readl(reg);
1282 if (time_after(jiffies, before + HZ * seconds))
1283 goto out;
1284 msleep(50);
1285 }
1286 retval = 0;
1287out:
1288 return retval;
1289}
1290
1291
1292static int twl_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset)
1293{
1294 int retval = 1;
1295 int i = 0;
1296 u32 status = 0;
1297 unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0;
1298 unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0;
1299 u32 init_connect_result = 0;
1300 int tries = 0;
1301 int do_soft_reset = soft_reset;
1302
1303 while (tries < TW_MAX_RESET_TRIES) {
1304
1305 if (do_soft_reset) {
1306 TWL_SOFT_RESET(tw_dev);
1307
1308
1309 if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, 0x0, 30)) {
1310 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Controller never went non-ready during reset sequence");
1311 tries++;
1312 continue;
1313 }
1314 if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, TWL_CONTROLLER_READY, 60)) {
1315 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x11, "Controller not ready during reset sequence");
1316 tries++;
1317 continue;
1318 }
1319 }
1320
1321
1322 if (twl_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
1323 TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL,
1324 TW_9750_ARCH_ID, TW_CURRENT_DRIVER_BRANCH,
1325 TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl,
1326 &fw_on_ctlr_arch_id, &fw_on_ctlr_branch,
1327 &fw_on_ctlr_build, &init_connect_result)) {
1328 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x12, "Initconnection failed while checking SRL");
1329 do_soft_reset = 1;
1330 tries++;
1331 continue;
1332 }
1333
1334
1335 while (i < TW_Q_LENGTH) {
1336 writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
1337 writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
1338
1339
1340 status = readl(TWL_STATUS_REG_ADDR(tw_dev));
1341 if (!(status & TWL_STATUS_OVERRUN_SUBMIT))
1342 i++;
1343 }
1344
1345
1346 status = readl(TWL_STATUS_REG_ADDR(tw_dev));
1347 if (status) {
1348 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "Bad controller status after loading sense buffers");
1349 do_soft_reset = 1;
1350 tries++;
1351 continue;
1352 }
1353
1354
1355 if (twl_aen_drain_queue(tw_dev, soft_reset)) {
1356 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x14, "AEN drain failed during reset sequence");
1357 do_soft_reset = 1;
1358 tries++;
1359 continue;
1360 }
1361
1362
1363 strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION));
1364 tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL;
1365 tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
1366 tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD;
1367 tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL;
1368 tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH;
1369 tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD;
1370 tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl;
1371 tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch;
1372 tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build;
1373
1374
1375 retval = 0;
1376 goto out;
1377 }
1378out:
1379 return retval;
1380}
1381
1382
1383static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset)
1384{
1385 int i = 0, retval = 1;
1386 unsigned long flags = 0;
1387
1388
1389 if (ioctl_reset)
1390 scsi_block_requests(tw_dev->host);
1391
1392 set_bit(TW_IN_RESET, &tw_dev->flags);
1393 TWL_MASK_INTERRUPTS(tw_dev);
1394 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1395
1396 spin_lock_irqsave(tw_dev->host->host_lock, flags);
1397
1398
1399 for (i = 0; i < TW_Q_LENGTH; i++) {
1400 if ((tw_dev->state[i] != TW_S_FINISHED) &&
1401 (tw_dev->state[i] != TW_S_INITIAL) &&
1402 (tw_dev->state[i] != TW_S_COMPLETED)) {
1403 if (tw_dev->srb[i]) {
1404 tw_dev->srb[i]->result = (DID_RESET << 16);
1405 tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
1406 twl_unmap_scsi_data(tw_dev, i);
1407 }
1408 }
1409 }
1410
1411
1412 for (i = 0; i < TW_Q_LENGTH; i++) {
1413 tw_dev->free_queue[i] = i;
1414 tw_dev->state[i] = TW_S_INITIAL;
1415 }
1416 tw_dev->free_head = TW_Q_START;
1417 tw_dev->free_tail = TW_Q_START;
1418 tw_dev->posted_request_count = 0;
1419
1420 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
1421
1422 if (twl_reset_sequence(tw_dev, 1))
1423 goto out;
1424
1425 TWL_UNMASK_INTERRUPTS(tw_dev);
1426
1427 clear_bit(TW_IN_RESET, &tw_dev->flags);
1428 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1429
1430 retval = 0;
1431out:
1432 if (ioctl_reset)
1433 scsi_unblock_requests(tw_dev->host);
1434 return retval;
1435}
1436
1437
1438static int twl_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])
1439{
1440 int heads, sectors;
1441 TW_Device_Extension *tw_dev;
1442
1443 tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
1444
1445 if (capacity >= 0x200000) {
1446 heads = 255;
1447 sectors = 63;
1448 } else {
1449 heads = 64;
1450 sectors = 32;
1451 }
1452
1453 geom[0] = heads;
1454 geom[1] = sectors;
1455 geom[2] = sector_div(capacity, heads * sectors);
1456
1457 return 0;
1458}
1459
1460
1461static int twl_scsi_eh_reset(struct scsi_cmnd *SCpnt)
1462{
1463 TW_Device_Extension *tw_dev = NULL;
1464 int retval = FAILED;
1465
1466 tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1467
1468 tw_dev->num_resets++;
1469
1470 sdev_printk(KERN_WARNING, SCpnt->device,
1471 "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n",
1472 TW_DRIVER, 0x2c, SCpnt->cmnd[0]);
1473
1474
1475 mutex_lock(&tw_dev->ioctl_lock);
1476
1477
1478 if (twl_reset_device_extension(tw_dev, 0)) {
1479 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "Controller reset failed during scsi host reset");
1480 goto out;
1481 }
1482
1483 retval = SUCCESS;
1484out:
1485 mutex_unlock(&tw_dev->ioctl_lock);
1486 return retval;
1487}
1488
1489
1490static int twl_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1491{
1492 int request_id, retval;
1493 TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1494
1495
1496 if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
1497 retval = SCSI_MLQUEUE_HOST_BUSY;
1498 goto out;
1499 }
1500
1501
1502 SCpnt->scsi_done = done;
1503
1504
1505 twl_get_request_id(tw_dev, &request_id);
1506
1507
1508 tw_dev->srb[request_id] = SCpnt;
1509
1510
1511 SCpnt->SCp.phase = TW_PHASE_INITIAL;
1512
1513 retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
1514 if (retval) {
1515 tw_dev->state[request_id] = TW_S_COMPLETED;
1516 twl_free_request_id(tw_dev, request_id);
1517 SCpnt->result = (DID_ERROR << 16);
1518 done(SCpnt);
1519 retval = 0;
1520 }
1521out:
1522 return retval;
1523}
1524
1525static DEF_SCSI_QCMD(twl_scsi_queue)
1526
1527
1528static void __twl_shutdown(TW_Device_Extension *tw_dev)
1529{
1530
1531 TWL_MASK_INTERRUPTS(tw_dev);
1532
1533
1534 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
1535
1536 printk(KERN_WARNING "3w-sas: Shutting down host %d.\n", tw_dev->host->host_no);
1537
1538
1539 if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
1540 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Connection shutdown failed");
1541 } else {
1542 printk(KERN_WARNING "3w-sas: Shutdown complete.\n");
1543 }
1544
1545
1546 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1547}
1548
1549
1550static void twl_shutdown(struct pci_dev *pdev)
1551{
1552 struct Scsi_Host *host = pci_get_drvdata(pdev);
1553 TW_Device_Extension *tw_dev;
1554
1555 if (!host)
1556 return;
1557
1558 tw_dev = (TW_Device_Extension *)host->hostdata;
1559
1560 if (tw_dev->online)
1561 __twl_shutdown(tw_dev);
1562}
1563
1564
1565static int twl_slave_configure(struct scsi_device *sdev)
1566{
1567
1568 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
1569
1570 return 0;
1571}
1572
1573
1574static struct scsi_host_template driver_template = {
1575 .module = THIS_MODULE,
1576 .name = "3w-sas",
1577 .queuecommand = twl_scsi_queue,
1578 .eh_host_reset_handler = twl_scsi_eh_reset,
1579 .bios_param = twl_scsi_biosparam,
1580 .change_queue_depth = scsi_change_queue_depth,
1581 .can_queue = TW_Q_LENGTH-2,
1582 .slave_configure = twl_slave_configure,
1583 .this_id = -1,
1584 .sg_tablesize = TW_LIBERATOR_MAX_SGL_LENGTH,
1585 .max_sectors = TW_MAX_SECTORS,
1586 .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
1587 .use_clustering = ENABLE_CLUSTERING,
1588 .shost_attrs = twl_host_attrs,
1589 .emulated = 1,
1590 .no_write_same = 1,
1591};
1592
1593
1594static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
1595{
1596 struct Scsi_Host *host = NULL;
1597 TW_Device_Extension *tw_dev;
1598 int retval = -ENODEV;
1599 int *ptr_phycount, phycount=0;
1600
1601 retval = pci_enable_device(pdev);
1602 if (retval) {
1603 TW_PRINTK(host, TW_DRIVER, 0x17, "Failed to enable pci device");
1604 goto out_disable_device;
1605 }
1606
1607 pci_set_master(pdev);
1608 pci_try_set_mwi(pdev);
1609
1610 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1611 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1612 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1613 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1614 TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask");
1615 retval = -ENODEV;
1616 goto out_disable_device;
1617 }
1618
1619 host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
1620 if (!host) {
1621 TW_PRINTK(host, TW_DRIVER, 0x19, "Failed to allocate memory for device extension");
1622 retval = -ENOMEM;
1623 goto out_disable_device;
1624 }
1625 tw_dev = shost_priv(host);
1626
1627
1628 tw_dev->host = host;
1629 tw_dev->tw_pci_dev = pdev;
1630
1631 if (twl_initialize_device_extension(tw_dev)) {
1632 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension");
1633 goto out_free_device_extension;
1634 }
1635
1636
1637 retval = pci_request_regions(pdev, "3w-sas");
1638 if (retval) {
1639 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Failed to get mem region");
1640 goto out_free_device_extension;
1641 }
1642
1643
1644 tw_dev->base_addr = pci_iomap(pdev, 1, 0);
1645 if (!tw_dev->base_addr) {
1646 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap");
1647 goto out_release_mem_region;
1648 }
1649
1650
1651 TWL_MASK_INTERRUPTS(tw_dev);
1652
1653
1654 if (twl_reset_sequence(tw_dev, 0)) {
1655 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe");
1656 goto out_iounmap;
1657 }
1658
1659
1660 host->max_id = TW_MAX_UNITS;
1661 host->max_cmd_len = TW_MAX_CDB_LEN;
1662 host->max_lun = TW_MAX_LUNS;
1663 host->max_channel = 0;
1664
1665
1666 retval = scsi_add_host(host, &pdev->dev);
1667 if (retval) {
1668 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "scsi add host failed");
1669 goto out_iounmap;
1670 }
1671
1672 pci_set_drvdata(pdev, host);
1673
1674 printk(KERN_WARNING "3w-sas: scsi%d: Found an LSI 3ware %s Controller at 0x%llx, IRQ: %d.\n",
1675 host->host_no,
1676 (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
1677 TW_PARAM_MODEL, TW_PARAM_MODEL_LENGTH),
1678 (u64)pci_resource_start(pdev, 1), pdev->irq);
1679
1680 ptr_phycount = twl_get_param(tw_dev, 2, TW_PARAM_PHY_SUMMARY_TABLE,
1681 TW_PARAM_PHYCOUNT, TW_PARAM_PHYCOUNT_LENGTH);
1682 if (ptr_phycount)
1683 phycount = le32_to_cpu(*(int *)ptr_phycount);
1684
1685 printk(KERN_WARNING "3w-sas: scsi%d: Firmware %s, BIOS %s, Phys: %d.\n",
1686 host->host_no,
1687 (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
1688 TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH),
1689 (char *)twl_get_param(tw_dev, 2, TW_VERSION_TABLE,
1690 TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH),
1691 phycount);
1692
1693
1694 if (use_msi && !pci_enable_msi(pdev))
1695 set_bit(TW_USING_MSI, &tw_dev->flags);
1696
1697
1698 retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
1699 if (retval) {
1700 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Error requesting IRQ");
1701 goto out_remove_host;
1702 }
1703
1704 twl_device_extension_list[twl_device_extension_count] = tw_dev;
1705 twl_device_extension_count++;
1706
1707
1708 TWL_UNMASK_INTERRUPTS(tw_dev);
1709
1710
1711 scsi_scan_host(host);
1712
1713
1714 if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr))
1715 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Failed to create sysfs binary file: 3ware_aen_read");
1716 if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr))
1717 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Failed to create sysfs binary file: 3ware_compat_info");
1718
1719 if (twl_major == -1) {
1720 if ((twl_major = register_chrdev (0, "twl", &twl_fops)) < 0)
1721 TW_PRINTK(host, TW_DRIVER, 0x22, "Failed to register character device");
1722 }
1723 tw_dev->online = 1;
1724 return 0;
1725
1726out_remove_host:
1727 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1728 pci_disable_msi(pdev);
1729 scsi_remove_host(host);
1730out_iounmap:
1731 iounmap(tw_dev->base_addr);
1732out_release_mem_region:
1733 pci_release_regions(pdev);
1734out_free_device_extension:
1735 twl_free_device_extension(tw_dev);
1736 scsi_host_put(host);
1737out_disable_device:
1738 pci_disable_device(pdev);
1739
1740 return retval;
1741}
1742
1743
1744static void twl_remove(struct pci_dev *pdev)
1745{
1746 struct Scsi_Host *host = pci_get_drvdata(pdev);
1747 TW_Device_Extension *tw_dev;
1748
1749 if (!host)
1750 return;
1751
1752 tw_dev = (TW_Device_Extension *)host->hostdata;
1753
1754 if (!tw_dev->online)
1755 return;
1756
1757
1758 sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr);
1759 sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr);
1760
1761 scsi_remove_host(tw_dev->host);
1762
1763
1764 if (twl_major >= 0) {
1765 unregister_chrdev(twl_major, "twl");
1766 twl_major = -1;
1767 }
1768
1769
1770 __twl_shutdown(tw_dev);
1771
1772
1773 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1774 pci_disable_msi(pdev);
1775
1776
1777 iounmap(tw_dev->base_addr);
1778
1779
1780 pci_release_regions(pdev);
1781
1782
1783 twl_free_device_extension(tw_dev);
1784
1785 scsi_host_put(tw_dev->host);
1786 pci_disable_device(pdev);
1787 twl_device_extension_count--;
1788}
1789
1790#ifdef CONFIG_PM
1791
1792static int twl_suspend(struct pci_dev *pdev, pm_message_t state)
1793{
1794 struct Scsi_Host *host = pci_get_drvdata(pdev);
1795 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
1796
1797 printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no);
1798
1799 TWL_MASK_INTERRUPTS(tw_dev);
1800
1801 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
1802
1803
1804 if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
1805 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x23, "Connection shutdown failed during suspend");
1806 } else {
1807 printk(KERN_WARNING "3w-sas: Suspend complete.\n");
1808 }
1809
1810
1811 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1812
1813 pci_save_state(pdev);
1814 pci_disable_device(pdev);
1815 pci_set_power_state(pdev, pci_choose_state(pdev, state));
1816
1817 return 0;
1818}
1819
1820
1821static int twl_resume(struct pci_dev *pdev)
1822{
1823 int retval = 0;
1824 struct Scsi_Host *host = pci_get_drvdata(pdev);
1825 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
1826
1827 printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no);
1828 pci_set_power_state(pdev, PCI_D0);
1829 pci_enable_wake(pdev, PCI_D0, 0);
1830 pci_restore_state(pdev);
1831
1832 retval = pci_enable_device(pdev);
1833 if (retval) {
1834 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x24, "Enable device failed during resume");
1835 return retval;
1836 }
1837
1838 pci_set_master(pdev);
1839 pci_try_set_mwi(pdev);
1840
1841 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
1842 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
1843 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1844 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1845 TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume");
1846 retval = -ENODEV;
1847 goto out_disable_device;
1848 }
1849
1850
1851 if (twl_reset_sequence(tw_dev, 0)) {
1852 retval = -ENODEV;
1853 goto out_disable_device;
1854 }
1855
1856
1857 retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
1858 if (retval) {
1859 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Error requesting IRQ during resume");
1860 retval = -ENODEV;
1861 goto out_disable_device;
1862 }
1863
1864
1865 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1866 pci_enable_msi(pdev);
1867
1868
1869 TWL_UNMASK_INTERRUPTS(tw_dev);
1870
1871 printk(KERN_WARNING "3w-sas: Resume complete.\n");
1872 return 0;
1873
1874out_disable_device:
1875 scsi_remove_host(host);
1876 pci_disable_device(pdev);
1877
1878 return retval;
1879}
1880#endif
1881
1882
1883static struct pci_device_id twl_pci_tbl[] = {
1884 { PCI_VDEVICE(3WARE, PCI_DEVICE_ID_3WARE_9750) },
1885 { }
1886};
1887MODULE_DEVICE_TABLE(pci, twl_pci_tbl);
1888
1889
1890static struct pci_driver twl_driver = {
1891 .name = "3w-sas",
1892 .id_table = twl_pci_tbl,
1893 .probe = twl_probe,
1894 .remove = twl_remove,
1895#ifdef CONFIG_PM
1896 .suspend = twl_suspend,
1897 .resume = twl_resume,
1898#endif
1899 .shutdown = twl_shutdown
1900};
1901
1902
1903static int __init twl_init(void)
1904{
1905 printk(KERN_INFO "LSI 3ware SAS/SATA-RAID Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
1906
1907 return pci_register_driver(&twl_driver);
1908}
1909
1910
1911static void __exit twl_exit(void)
1912{
1913 pci_unregister_driver(&twl_driver);
1914}
1915
1916module_init(twl_init);
1917module_exit(twl_exit);
1918
1919
