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