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