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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 TW_Event *event;
225 unsigned short aen;
226 char host[16];
227 char *error_str;
228
229 tw_dev->aen_count++;
230
231
232 event = tw_dev->event_queue[tw_dev->error_index];
233
234 host[0] = '\0';
235 if (tw_dev->host)
236 sprintf(host, " scsi%d:", tw_dev->host->host_no);
237
238 aen = le16_to_cpu(header->status_block.error);
239 memset(event, 0, sizeof(TW_Event));
240
241 event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
242
243 local_time = (u32)(ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
244 event->time_stamp_sec = local_time;
245 event->aen_code = aen;
246 event->retrieved = TW_AEN_NOT_RETRIEVED;
247 event->sequence_id = tw_dev->error_sequence_id;
248 tw_dev->error_sequence_id++;
249
250
251 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]);
252
253 header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0';
254 event->parameter_len = strlen(header->err_specific_desc);
255 memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str));
256 if (event->severity != TW_AEN_SEVERITY_DEBUG)
257 printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
258 host,
259 twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
260 TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str,
261 header->err_specific_desc);
262 else
263 tw_dev->aen_count--;
264
265 tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
266}
267
268
269static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
270{
271 dma_addr_t command_que_value;
272
273 command_que_value = tw_dev->command_packet_phys[request_id];
274 command_que_value += TW_COMMAND_OFFSET;
275
276
277 writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev));
278
279 writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev));
280
281 tw_dev->state[request_id] = TW_S_POSTED;
282 tw_dev->posted_request_count++;
283 if (tw_dev->posted_request_count > tw_dev->max_posted_request_count)
284 tw_dev->max_posted_request_count = tw_dev->posted_request_count;
285
286 return 0;
287}
288
289
290static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id,
291 unsigned char *cdb, int use_sg,
292 TW_SG_Entry_ISO *sglistarg)
293{
294 TW_Command_Full *full_command_packet;
295 TW_Command_Apache *command_packet;
296 int i, sg_count;
297 struct scsi_cmnd *srb = NULL;
298 struct scatterlist *sg;
299 int retval = 1;
300
301 if (tw_dev->srb[request_id])
302 srb = tw_dev->srb[request_id];
303
304
305 full_command_packet = tw_dev->command_packet_virt[request_id];
306 full_command_packet->header.header_desc.size_header = 128;
307 full_command_packet->header.status_block.error = 0;
308 full_command_packet->header.status_block.severity__reserved = 0;
309
310 command_packet = &full_command_packet->command.newcommand;
311 command_packet->status = 0;
312 command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI);
313
314
315 if (!cdb)
316 memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN);
317 else
318 memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN);
319
320 if (srb) {
321 command_packet->unit = srb->device->id;
322 command_packet->request_id__lunl =
323 cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id));
324 } else {
325 command_packet->request_id__lunl =
326 cpu_to_le16(TW_REQ_LUN_IN(0, request_id));
327 command_packet->unit = 0;
328 }
329
330 command_packet->sgl_offset = 16;
331
332 if (!sglistarg) {
333
334 if (scsi_sg_count(srb)) {
335 sg_count = scsi_dma_map(srb);
336 if (sg_count <= 0)
337 goto out;
338
339 scsi_for_each_sg(srb, sg, sg_count, i) {
340 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
341 command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg));
342 }
343 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
344 }
345 } else {
346
347 for (i = 0; i < use_sg; i++) {
348 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address);
349 command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length);
350 }
351 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg));
352 }
353
354
355 if (srb) {
356 tw_dev->sector_count = scsi_bufflen(srb) / 512;
357 if (tw_dev->sector_count > tw_dev->max_sector_count)
358 tw_dev->max_sector_count = tw_dev->sector_count;
359 tw_dev->sgl_entries = scsi_sg_count(srb);
360 if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
361 tw_dev->max_sgl_entries = tw_dev->sgl_entries;
362 }
363
364
365 retval = twl_post_command_packet(tw_dev, request_id);
366
367out:
368 return retval;
369}
370
371
372static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
373{
374 unsigned char cdb[TW_MAX_CDB_LEN];
375 TW_SG_Entry_ISO sglist[1];
376 TW_Command_Full *full_command_packet;
377 int retval = 1;
378
379 full_command_packet = tw_dev->command_packet_virt[request_id];
380 memset(full_command_packet, 0, sizeof(TW_Command_Full));
381
382
383 memset(&cdb, 0, TW_MAX_CDB_LEN);
384 cdb[0] = REQUEST_SENSE;
385 cdb[4] = TW_ALLOCATION_LENGTH;
386
387
388 memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
389 sglist[0].length = TW_SECTOR_SIZE;
390 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
391
392
393 tw_dev->srb[request_id] = NULL;
394
395
396 if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
397 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue");
398 goto out;
399 }
400 retval = 0;
401out:
402 return retval;
403}
404
405
406static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
407{
408 u32 schedulertime;
409 TW_Command_Full *full_command_packet;
410 TW_Command *command_packet;
411 TW_Param_Apache *param;
412 time64_t local_time;
413
414
415 full_command_packet = tw_dev->command_packet_virt[request_id];
416 memset(full_command_packet, 0, sizeof(TW_Command_Full));
417 command_packet = &full_command_packet->command.oldcommand;
418 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
419 command_packet->request_id = request_id;
420 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
421 command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
422 command_packet->size = TW_COMMAND_SIZE;
423 command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
424
425
426 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
427 memset(param, 0, TW_SECTOR_SIZE);
428 param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000);
429 param->parameter_id = cpu_to_le16(0x3);
430 param->parameter_size_bytes = cpu_to_le16(4);
431
432
433
434 local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60));
435 div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime);
436 schedulertime = cpu_to_le32(schedulertime);
437
438 memcpy(param->data, &schedulertime, sizeof(u32));
439
440
441 tw_dev->srb[request_id] = NULL;
442
443
444 twl_post_command_packet(tw_dev, request_id);
445}
446
447
448static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
449{
450 *request_id = tw_dev->free_queue[tw_dev->free_head];
451 tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
452 tw_dev->state[*request_id] = TW_S_STARTED;
453}
454
455
456static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id)
457{
458 tw_dev->free_queue[tw_dev->free_tail] = request_id;
459 tw_dev->state[request_id] = TW_S_FINISHED;
460 tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
461}
462
463
464static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id)
465{
466 TW_Command_Full *full_command_packet;
467 TW_Command *command_packet;
468 TW_Command_Apache_Header *header;
469 unsigned short aen;
470 int retval = 1;
471
472 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
473 tw_dev->posted_request_count--;
474 aen = le16_to_cpu(header->status_block.error);
475 full_command_packet = tw_dev->command_packet_virt[request_id];
476 command_packet = &full_command_packet->command.oldcommand;
477
478
479 if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) {
480
481 if (twl_aen_read_queue(tw_dev, request_id))
482 goto out2;
483 else {
484 retval = 0;
485 goto out;
486 }
487 }
488
489 switch (aen) {
490 case TW_AEN_QUEUE_EMPTY:
491
492 break;
493 case TW_AEN_SYNC_TIME_WITH_HOST:
494 twl_aen_sync_time(tw_dev, request_id);
495 retval = 0;
496 goto out;
497 default:
498 twl_aen_queue_event(tw_dev, header);
499
500
501 if (twl_aen_read_queue(tw_dev, request_id))
502 goto out2;
503 else {
504 retval = 0;
505 goto out;
506 }
507 }
508 retval = 0;
509out2:
510 tw_dev->state[request_id] = TW_S_COMPLETED;
511 twl_free_request_id(tw_dev, request_id);
512 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
513out:
514 return retval;
515}
516
517
518static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
519{
520 unsigned long before;
521 dma_addr_t mfa;
522 u32 regh, regl;
523 u32 response;
524 int retval = 1;
525 int found = 0;
526
527 before = jiffies;
528
529 while (!found) {
530 if (sizeof(dma_addr_t) > 4) {
531 regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
532 regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
533 mfa = ((u64)regh << 32) | regl;
534 } else
535 mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
536
537 response = (u32)mfa;
538
539 if (TW_RESID_OUT(response) == request_id)
540 found = 1;
541
542 if (time_after(jiffies, before + HZ * seconds))
543 goto out;
544
545 msleep(50);
546 }
547 retval = 0;
548out:
549 return retval;
550}
551
552
553static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
554{
555 int request_id = 0;
556 unsigned char cdb[TW_MAX_CDB_LEN];
557 TW_SG_Entry_ISO sglist[1];
558 int finished = 0, count = 0;
559 TW_Command_Full *full_command_packet;
560 TW_Command_Apache_Header *header;
561 unsigned short aen;
562 int first_reset = 0, queue = 0, retval = 1;
563
564 if (no_check_reset)
565 first_reset = 0;
566 else
567 first_reset = 1;
568
569 full_command_packet = tw_dev->command_packet_virt[request_id];
570 memset(full_command_packet, 0, sizeof(TW_Command_Full));
571
572
573 memset(&cdb, 0, TW_MAX_CDB_LEN);
574 cdb[0] = REQUEST_SENSE;
575 cdb[4] = TW_ALLOCATION_LENGTH;
576
577
578 memset(&sglist, 0, sizeof(TW_SG_Entry_ISO));
579 sglist[0].length = TW_SECTOR_SIZE;
580 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
581
582
583 tw_dev->srb[request_id] = NULL;
584
585 do {
586
587 if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
588 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense");
589 goto out;
590 }
591
592
593 if (twl_poll_response(tw_dev, request_id, 30)) {
594 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue");
595 tw_dev->posted_request_count--;
596 goto out;
597 }
598
599 tw_dev->posted_request_count--;
600 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
601 aen = le16_to_cpu(header->status_block.error);
602 queue = 0;
603 count++;
604
605 switch (aen) {
606 case TW_AEN_QUEUE_EMPTY:
607 if (first_reset != 1)
608 goto out;
609 else
610 finished = 1;
611 break;
612 case TW_AEN_SOFT_RESET:
613 if (first_reset == 0)
614 first_reset = 1;
615 else
616 queue = 1;
617 break;
618 case TW_AEN_SYNC_TIME_WITH_HOST:
619 break;
620 default:
621 queue = 1;
622 }
623
624
625 if (queue)
626 twl_aen_queue_event(tw_dev, header);
627 } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN));
628
629 if (count == TW_MAX_AEN_DRAIN)
630 goto out;
631
632 retval = 0;
633out:
634 tw_dev->state[request_id] = TW_S_INITIAL;
635 return retval;
636}
637
638
639static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
640{
641 int i;
642 dma_addr_t dma_handle;
643 unsigned long *cpu_addr;
644 int retval = 1;
645
646 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev,
647 size * TW_Q_LENGTH, &dma_handle,
648 GFP_KERNEL);
649 if (!cpu_addr) {
650 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
651 goto out;
652 }
653
654 for (i = 0; i < TW_Q_LENGTH; i++) {
655 switch(which) {
656 case 0:
657 tw_dev->command_packet_phys[i] = dma_handle+(i*size);
658 tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size));
659 break;
660 case 1:
661 tw_dev->generic_buffer_phys[i] = dma_handle+(i*size);
662 tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
663 break;
664 case 2:
665 tw_dev->sense_buffer_phys[i] = dma_handle+(i*size);
666 tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size));
667 break;
668 }
669 }
670 retval = 0;
671out:
672 return retval;
673}
674
675
676static 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)
677{
678 TW_Command *oldcommand;
679 TW_Command_Apache *newcommand;
680 TW_SG_Entry_ISO *sgl;
681 unsigned int pae = 0;
682
683 if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
684 pae = 1;
685
686 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
687 newcommand = &full_command_packet->command.newcommand;
688 newcommand->request_id__lunl =
689 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
690 if (length) {
691 newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
692 newcommand->sg_list[0].length = TW_CPU_TO_SGL(length);
693 }
694 newcommand->sgl_entries__lunh =
695 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0));
696 } else {
697 oldcommand = &full_command_packet->command.oldcommand;
698 oldcommand->request_id = request_id;
699
700 if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) {
701
702 sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0));
703 sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
704 sgl->length = TW_CPU_TO_SGL(length);
705 oldcommand->size += pae;
706 oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0;
707 }
708 }
709}
710
711
712
713static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
714{
715 long timeout;
716 unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
717 dma_addr_t dma_handle;
718 int request_id = 0;
719 TW_Ioctl_Driver_Command driver_command;
720 struct inode *inode = file_inode(file);
721 TW_Ioctl_Buf_Apache *tw_ioctl;
722 TW_Command_Full *full_command_packet;
723 TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)];
724 int retval = -EFAULT;
725 void __user *argp = (void __user *)arg;
726
727 mutex_lock(&twl_chrdev_mutex);
728
729
730 if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
731 retval = -EINTR;
732 goto out;
733 }
734
735
736 if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))
737 goto out2;
738
739
740 if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {
741 retval = -EINVAL;
742 goto out2;
743 }
744
745
746 data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;
747
748
749 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);
750 if (!cpu_addr) {
751 retval = -ENOMEM;
752 goto out2;
753 }
754
755 tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr;
756
757
758 if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))
759 goto out3;
760
761
762 switch (cmd) {
763 case TW_IOCTL_FIRMWARE_PASS_THROUGH:
764 spin_lock_irqsave(tw_dev->host->host_lock, flags);
765 twl_get_request_id(tw_dev, &request_id);
766
767
768 tw_dev->srb[request_id] = NULL;
769
770
771 tw_dev->chrdev_request_id = request_id;
772
773 full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command;
774
775
776 twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted);
777
778 memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full));
779
780
781 twl_post_command_packet(tw_dev, request_id);
782 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
783
784 timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
785
786
787 timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
788
789
790 if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
791
792 printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
793 tw_dev->host->host_no, TW_DRIVER, 0x6,
794 cmd);
795 retval = -EIO;
796 twl_reset_device_extension(tw_dev, 1);
797 goto out3;
798 }
799
800
801 memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
802
803
804 spin_lock_irqsave(tw_dev->host->host_lock, flags);
805 tw_dev->posted_request_count--;
806 tw_dev->state[request_id] = TW_S_COMPLETED;
807 twl_free_request_id(tw_dev, request_id);
808 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
809 break;
810 default:
811 retval = -ENOTTY;
812 goto out3;
813 }
814
815
816 if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0)
817 retval = 0;
818out3:
819
820 dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
821out2:
822 mutex_unlock(&tw_dev->ioctl_lock);
823out:
824 mutex_unlock(&twl_chrdev_mutex);
825 return retval;
826}
827
828
829static int twl_chrdev_open(struct inode *inode, struct file *file)
830{
831 unsigned int minor_number;
832 int retval = -ENODEV;
833
834 if (!capable(CAP_SYS_ADMIN)) {
835 retval = -EACCES;
836 goto out;
837 }
838
839 minor_number = iminor(inode);
840 if (minor_number >= twl_device_extension_count)
841 goto out;
842 retval = 0;
843out:
844 return retval;
845}
846
847
848static const struct file_operations twl_fops = {
849 .owner = THIS_MODULE,
850 .unlocked_ioctl = twl_chrdev_ioctl,
851 .open = twl_chrdev_open,
852 .release = NULL,
853 .llseek = noop_llseek,
854};
855
856
857static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host)
858{
859 TW_Command_Apache_Header *header;
860 TW_Command_Full *full_command_packet;
861 unsigned short error;
862 char *error_str;
863
864 header = tw_dev->sense_buffer_virt[i];
865 full_command_packet = tw_dev->command_packet_virt[request_id];
866
867
868 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]);
869
870
871 error = le16_to_cpu(header->status_block.error);
872 if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) {
873 if (print_host)
874 printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
875 tw_dev->host->host_no,
876 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
877 header->status_block.error,
878 error_str,
879 header->err_specific_desc);
880 else
881 printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n",
882 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
883 header->status_block.error,
884 error_str,
885 header->err_specific_desc);
886 }
887
888 if (copy_sense) {
889 memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH);
890 tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
891 goto out;
892 }
893out:
894 return 1;
895}
896
897
898static void twl_free_device_extension(TW_Device_Extension *tw_dev)
899{
900 if (tw_dev->command_packet_virt[0])
901 dma_free_coherent(&tw_dev->tw_pci_dev->dev,
902 sizeof(TW_Command_Full)*TW_Q_LENGTH,
903 tw_dev->command_packet_virt[0],
904 tw_dev->command_packet_phys[0]);
905
906 if (tw_dev->generic_buffer_virt[0])
907 dma_free_coherent(&tw_dev->tw_pci_dev->dev,
908 TW_SECTOR_SIZE*TW_Q_LENGTH,
909 tw_dev->generic_buffer_virt[0],
910 tw_dev->generic_buffer_phys[0]);
911
912 if (tw_dev->sense_buffer_virt[0])
913 dma_free_coherent(&tw_dev->tw_pci_dev->dev,
914 sizeof(TW_Command_Apache_Header)*
915 TW_Q_LENGTH,
916 tw_dev->sense_buffer_virt[0],
917 tw_dev->sense_buffer_phys[0]);
918
919 kfree(tw_dev->event_queue[0]);
920}
921
922
923static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
924{
925 TW_Command_Full *full_command_packet;
926 TW_Command *command_packet;
927 TW_Param_Apache *param;
928 void *retval = NULL;
929
930
931 full_command_packet = tw_dev->command_packet_virt[request_id];
932 memset(full_command_packet, 0, sizeof(TW_Command_Full));
933 command_packet = &full_command_packet->command.oldcommand;
934
935 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
936 command_packet->size = TW_COMMAND_SIZE;
937 command_packet->request_id = request_id;
938 command_packet->byte6_offset.block_count = cpu_to_le16(1);
939
940
941 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
942 memset(param, 0, TW_SECTOR_SIZE);
943 param->table_id = cpu_to_le16(table_id | 0x8000);
944 param->parameter_id = cpu_to_le16(parameter_id);
945 param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
946
947 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
948 command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE);
949
950
951 twl_post_command_packet(tw_dev, request_id);
952
953
954 if (twl_poll_response(tw_dev, request_id, 30))
955 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param")
956 else
957 retval = (void *)&(param->data[0]);
958
959 tw_dev->posted_request_count--;
960 tw_dev->state[request_id] = TW_S_INITIAL;
961
962 return retval;
963}
964
965
966static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits,
967 u32 set_features, unsigned short current_fw_srl,
968 unsigned short current_fw_arch_id,
969 unsigned short current_fw_branch,
970 unsigned short current_fw_build,
971 unsigned short *fw_on_ctlr_srl,
972 unsigned short *fw_on_ctlr_arch_id,
973 unsigned short *fw_on_ctlr_branch,
974 unsigned short *fw_on_ctlr_build,
975 u32 *init_connect_result)
976{
977 TW_Command_Full *full_command_packet;
978 TW_Initconnect *tw_initconnect;
979 int request_id = 0, retval = 1;
980
981
982 full_command_packet = tw_dev->command_packet_virt[request_id];
983 memset(full_command_packet, 0, sizeof(TW_Command_Full));
984 full_command_packet->header.header_desc.size_header = 128;
985
986 tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
987 tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
988 tw_initconnect->request_id = request_id;
989 tw_initconnect->message_credits = cpu_to_le16(message_credits);
990 tw_initconnect->features = set_features;
991
992
993 tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0;
994
995 tw_initconnect->features = cpu_to_le32(tw_initconnect->features);
996
997 if (set_features & TW_EXTENDED_INIT_CONNECT) {
998 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
999 tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl);
1000 tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
1001 tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
1002 tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
1003 } else
1004 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
1005
1006
1007 twl_post_command_packet(tw_dev, request_id);
1008
1009
1010 if (twl_poll_response(tw_dev, request_id, 30)) {
1011 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x8, "No valid response during init connection");
1012 } else {
1013 if (set_features & TW_EXTENDED_INIT_CONNECT) {
1014 *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl);
1015 *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id);
1016 *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch);
1017 *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build);
1018 *init_connect_result = le32_to_cpu(tw_initconnect->result);
1019 }
1020 retval = 0;
1021 }
1022
1023 tw_dev->posted_request_count--;
1024 tw_dev->state[request_id] = TW_S_INITIAL;
1025
1026 return retval;
1027}
1028
1029
1030static int twl_initialize_device_extension(TW_Device_Extension *tw_dev)
1031{
1032 int i, retval = 1;
1033
1034
1035 if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) {
1036 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x9, "Command packet memory allocation failed");
1037 goto out;
1038 }
1039
1040
1041 if (twl_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) {
1042 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Generic memory allocation failed");
1043 goto out;
1044 }
1045
1046
1047 if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Apache_Header), 2)) {
1048 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xb, "Sense buffer allocation failed");
1049 goto out;
1050 }
1051
1052
1053 tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
1054 if (!tw_dev->event_queue[0]) {
1055 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "Event info memory allocation failed");
1056 goto out;
1057 }
1058
1059 for (i = 0; i < TW_Q_LENGTH; i++) {
1060 tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
1061 tw_dev->free_queue[i] = i;
1062 tw_dev->state[i] = TW_S_INITIAL;
1063 }
1064
1065 tw_dev->free_head = TW_Q_START;
1066 tw_dev->free_tail = TW_Q_START;
1067 tw_dev->error_sequence_id = 1;
1068 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1069
1070 mutex_init(&tw_dev->ioctl_lock);
1071 init_waitqueue_head(&tw_dev->ioctl_wqueue);
1072
1073 retval = 0;
1074out:
1075 return retval;
1076}
1077
1078
1079static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev)
1080{
1081 int retval = 1;
1082 u32 request_id, doorbell;
1083
1084
1085 doorbell = readl(TWL_HOBDB_REG_ADDR(tw_dev));
1086
1087
1088 if (doorbell & TWL_DOORBELL_CONTROLLER_ERROR) {
1089 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "Microcontroller Error: clearing");
1090 goto out;
1091 }
1092
1093
1094 if (doorbell & TWL_DOORBELL_ATTENTION_INTERRUPT) {
1095 if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) {
1096 twl_get_request_id(tw_dev, &request_id);
1097 if (twl_aen_read_queue(tw_dev, request_id)) {
1098 tw_dev->state[request_id] = TW_S_COMPLETED;
1099 twl_free_request_id(tw_dev, request_id);
1100 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
1101 }
1102 }
1103 }
1104
1105 retval = 0;
1106out:
1107
1108 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1109
1110
1111 readl(TWL_HOBDBC_REG_ADDR(tw_dev));
1112
1113 return retval;
1114}
1115
1116
1117static irqreturn_t twl_interrupt(int irq, void *dev_instance)
1118{
1119 TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
1120 int i, handled = 0, error = 0;
1121 dma_addr_t mfa = 0;
1122 u32 reg, regl, regh, response, request_id = 0;
1123 struct scsi_cmnd *cmd;
1124 TW_Command_Full *full_command_packet;
1125
1126 spin_lock(tw_dev->host->host_lock);
1127
1128
1129 reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
1130
1131
1132 if (!(reg & TWL_HISTATUS_VALID_INTERRUPT))
1133 goto twl_interrupt_bail;
1134
1135 handled = 1;
1136
1137
1138 if (test_bit(TW_IN_RESET, &tw_dev->flags))
1139 goto twl_interrupt_bail;
1140
1141
1142 if (reg & TWL_HISTATUS_ATTENTION_INTERRUPT) {
1143 if (twl_handle_attention_interrupt(tw_dev)) {
1144 TWL_MASK_INTERRUPTS(tw_dev);
1145 goto twl_interrupt_bail;
1146 }
1147 }
1148
1149
1150 while (reg & TWL_HISTATUS_RESPONSE_INTERRUPT) {
1151 if (sizeof(dma_addr_t) > 4) {
1152 regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev));
1153 regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
1154 mfa = ((u64)regh << 32) | regl;
1155 } else
1156 mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev));
1157
1158 error = 0;
1159 response = (u32)mfa;
1160
1161
1162 if (!TW_NOTMFA_OUT(response)) {
1163 for (i=0;i<TW_Q_LENGTH;i++) {
1164 if (tw_dev->sense_buffer_phys[i] == mfa) {
1165 request_id = le16_to_cpu(tw_dev->sense_buffer_virt[i]->header_desc.request_id);
1166 if (tw_dev->srb[request_id] != NULL)
1167 error = twl_fill_sense(tw_dev, i, request_id, 1, 1);
1168 else {
1169
1170 if (request_id != tw_dev->chrdev_request_id)
1171 error = twl_fill_sense(tw_dev, i, request_id, 0, 1);
1172 else
1173 memcpy(tw_dev->command_packet_virt[request_id], tw_dev->sense_buffer_virt[i], sizeof(TW_Command_Apache_Header));
1174 }
1175
1176
1177 writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
1178 writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
1179 break;
1180 }
1181 }
1182 } else
1183 request_id = TW_RESID_OUT(response);
1184
1185 full_command_packet = tw_dev->command_packet_virt[request_id];
1186
1187
1188 if (tw_dev->state[request_id] != TW_S_POSTED) {
1189 if (tw_dev->srb[request_id] != NULL) {
1190 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Received a request id that wasn't posted");
1191 TWL_MASK_INTERRUPTS(tw_dev);
1192 goto twl_interrupt_bail;
1193 }
1194 }
1195
1196
1197 if (tw_dev->srb[request_id] == NULL) {
1198 if (request_id != tw_dev->chrdev_request_id) {
1199 if (twl_aen_complete(tw_dev, request_id))
1200 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "Error completing AEN during attention interrupt");
1201 } else {
1202 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1203 wake_up(&tw_dev->ioctl_wqueue);
1204 }
1205 } else {
1206 cmd = tw_dev->srb[request_id];
1207
1208 if (!error)
1209 cmd->result = (DID_OK << 16);
1210
1211
1212 if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
1213 if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
1214 scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
1215 }
1216
1217
1218 scsi_dma_unmap(cmd);
1219 cmd->scsi_done(cmd);
1220 tw_dev->state[request_id] = TW_S_COMPLETED;
1221 twl_free_request_id(tw_dev, request_id);
1222 tw_dev->posted_request_count--;
1223 }
1224
1225
1226 reg = readl(TWL_HISTAT_REG_ADDR(tw_dev));
1227 }
1228
1229twl_interrupt_bail:
1230 spin_unlock(tw_dev->host->host_lock);
1231 return IRQ_RETVAL(handled);
1232}
1233
1234
1235static int twl_poll_register(TW_Device_Extension *tw_dev, void *reg, u32 value, u32 result, int seconds)
1236{
1237 unsigned long before;
1238 int retval = 1;
1239 u32 reg_value;
1240
1241 reg_value = readl(reg);
1242 before = jiffies;
1243
1244 while ((reg_value & value) != result) {
1245 reg_value = readl(reg);
1246 if (time_after(jiffies, before + HZ * seconds))
1247 goto out;
1248 msleep(50);
1249 }
1250 retval = 0;
1251out:
1252 return retval;
1253}
1254
1255
1256static int twl_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset)
1257{
1258 int retval = 1;
1259 int i = 0;
1260 u32 status = 0;
1261 unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0;
1262 unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0;
1263 u32 init_connect_result = 0;
1264 int tries = 0;
1265 int do_soft_reset = soft_reset;
1266
1267 while (tries < TW_MAX_RESET_TRIES) {
1268
1269 if (do_soft_reset) {
1270 TWL_SOFT_RESET(tw_dev);
1271
1272
1273 if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, 0x0, 30)) {
1274 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Controller never went non-ready during reset sequence");
1275 tries++;
1276 continue;
1277 }
1278 if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, TWL_CONTROLLER_READY, 60)) {
1279 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x11, "Controller not ready during reset sequence");
1280 tries++;
1281 continue;
1282 }
1283 }
1284
1285
1286 if (twl_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
1287 TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL,
1288 TW_9750_ARCH_ID, TW_CURRENT_DRIVER_BRANCH,
1289 TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl,
1290 &fw_on_ctlr_arch_id, &fw_on_ctlr_branch,
1291 &fw_on_ctlr_build, &init_connect_result)) {
1292 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x12, "Initconnection failed while checking SRL");
1293 do_soft_reset = 1;
1294 tries++;
1295 continue;
1296 }
1297
1298
1299 while (i < TW_Q_LENGTH) {
1300 writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev));
1301 writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev));
1302
1303
1304 status = readl(TWL_STATUS_REG_ADDR(tw_dev));
1305 if (!(status & TWL_STATUS_OVERRUN_SUBMIT))
1306 i++;
1307 }
1308
1309
1310 status = readl(TWL_STATUS_REG_ADDR(tw_dev));
1311 if (status) {
1312 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "Bad controller status after loading sense buffers");
1313 do_soft_reset = 1;
1314 tries++;
1315 continue;
1316 }
1317
1318
1319 if (twl_aen_drain_queue(tw_dev, soft_reset)) {
1320 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x14, "AEN drain failed during reset sequence");
1321 do_soft_reset = 1;
1322 tries++;
1323 continue;
1324 }
1325
1326
1327 strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION));
1328 tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL;
1329 tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
1330 tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD;
1331 tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL;
1332 tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH;
1333 tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD;
1334 tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl;
1335 tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch;
1336 tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build;
1337
1338
1339 retval = 0;
1340 goto out;
1341 }
1342out:
1343 return retval;
1344}
1345
1346
1347static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset)
1348{
1349 int i = 0, retval = 1;
1350 unsigned long flags = 0;
1351
1352
1353 if (ioctl_reset)
1354 scsi_block_requests(tw_dev->host);
1355
1356 set_bit(TW_IN_RESET, &tw_dev->flags);
1357 TWL_MASK_INTERRUPTS(tw_dev);
1358 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1359
1360 spin_lock_irqsave(tw_dev->host->host_lock, flags);
1361
1362
1363 for (i = 0; i < TW_Q_LENGTH; i++) {
1364 if ((tw_dev->state[i] != TW_S_FINISHED) &&
1365 (tw_dev->state[i] != TW_S_INITIAL) &&
1366 (tw_dev->state[i] != TW_S_COMPLETED)) {
1367 struct scsi_cmnd *cmd = tw_dev->srb[i];
1368
1369 if (cmd) {
1370 cmd->result = (DID_RESET << 16);
1371 scsi_dma_unmap(cmd);
1372 cmd->scsi_done(cmd);
1373 }
1374 }
1375 }
1376
1377
1378 for (i = 0; i < TW_Q_LENGTH; i++) {
1379 tw_dev->free_queue[i] = i;
1380 tw_dev->state[i] = TW_S_INITIAL;
1381 }
1382 tw_dev->free_head = TW_Q_START;
1383 tw_dev->free_tail = TW_Q_START;
1384 tw_dev->posted_request_count = 0;
1385
1386 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
1387
1388 if (twl_reset_sequence(tw_dev, 1))
1389 goto out;
1390
1391 TWL_UNMASK_INTERRUPTS(tw_dev);
1392
1393 clear_bit(TW_IN_RESET, &tw_dev->flags);
1394 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1395
1396 retval = 0;
1397out:
1398 if (ioctl_reset)
1399 scsi_unblock_requests(tw_dev->host);
1400 return retval;
1401}
1402
1403
1404static int twl_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[])
1405{
1406 int heads, sectors;
1407
1408 if (capacity >= 0x200000) {
1409 heads = 255;
1410 sectors = 63;
1411 } else {
1412 heads = 64;
1413 sectors = 32;
1414 }
1415
1416 geom[0] = heads;
1417 geom[1] = sectors;
1418 geom[2] = sector_div(capacity, heads * sectors);
1419
1420 return 0;
1421}
1422
1423
1424static int twl_scsi_eh_reset(struct scsi_cmnd *SCpnt)
1425{
1426 TW_Device_Extension *tw_dev = NULL;
1427 int retval = FAILED;
1428
1429 tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1430
1431 tw_dev->num_resets++;
1432
1433 sdev_printk(KERN_WARNING, SCpnt->device,
1434 "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n",
1435 TW_DRIVER, 0x2c, SCpnt->cmnd[0]);
1436
1437
1438 mutex_lock(&tw_dev->ioctl_lock);
1439
1440
1441 if (twl_reset_device_extension(tw_dev, 0)) {
1442 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "Controller reset failed during scsi host reset");
1443 goto out;
1444 }
1445
1446 retval = SUCCESS;
1447out:
1448 mutex_unlock(&tw_dev->ioctl_lock);
1449 return retval;
1450}
1451
1452
1453static int twl_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1454{
1455 int request_id, retval;
1456 TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1457
1458
1459 if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
1460 retval = SCSI_MLQUEUE_HOST_BUSY;
1461 goto out;
1462 }
1463
1464
1465 SCpnt->scsi_done = done;
1466
1467
1468 twl_get_request_id(tw_dev, &request_id);
1469
1470
1471 tw_dev->srb[request_id] = SCpnt;
1472
1473 retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
1474 if (retval) {
1475 tw_dev->state[request_id] = TW_S_COMPLETED;
1476 twl_free_request_id(tw_dev, request_id);
1477 SCpnt->result = (DID_ERROR << 16);
1478 done(SCpnt);
1479 retval = 0;
1480 }
1481out:
1482 return retval;
1483}
1484
1485static DEF_SCSI_QCMD(twl_scsi_queue)
1486
1487
1488static void __twl_shutdown(TW_Device_Extension *tw_dev)
1489{
1490
1491 TWL_MASK_INTERRUPTS(tw_dev);
1492
1493
1494 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
1495
1496 printk(KERN_WARNING "3w-sas: Shutting down host %d.\n", tw_dev->host->host_no);
1497
1498
1499 if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
1500 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Connection shutdown failed");
1501 } else {
1502 printk(KERN_WARNING "3w-sas: Shutdown complete.\n");
1503 }
1504
1505
1506 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1507}
1508
1509
1510static void twl_shutdown(struct pci_dev *pdev)
1511{
1512 struct Scsi_Host *host = pci_get_drvdata(pdev);
1513 TW_Device_Extension *tw_dev;
1514
1515 if (!host)
1516 return;
1517
1518 tw_dev = (TW_Device_Extension *)host->hostdata;
1519
1520 if (tw_dev->online)
1521 __twl_shutdown(tw_dev);
1522}
1523
1524
1525static int twl_slave_configure(struct scsi_device *sdev)
1526{
1527
1528 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
1529
1530 return 0;
1531}
1532
1533
1534static struct scsi_host_template driver_template = {
1535 .module = THIS_MODULE,
1536 .name = "3w-sas",
1537 .queuecommand = twl_scsi_queue,
1538 .eh_host_reset_handler = twl_scsi_eh_reset,
1539 .bios_param = twl_scsi_biosparam,
1540 .change_queue_depth = scsi_change_queue_depth,
1541 .can_queue = TW_Q_LENGTH-2,
1542 .slave_configure = twl_slave_configure,
1543 .this_id = -1,
1544 .sg_tablesize = TW_LIBERATOR_MAX_SGL_LENGTH,
1545 .max_sectors = TW_MAX_SECTORS,
1546 .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
1547 .shost_attrs = twl_host_attrs,
1548 .emulated = 1,
1549 .no_write_same = 1,
1550};
1551
1552
1553static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
1554{
1555 struct Scsi_Host *host = NULL;
1556 TW_Device_Extension *tw_dev;
1557 int retval = -ENODEV;
1558 int *ptr_phycount, phycount=0;
1559
1560 retval = pci_enable_device(pdev);
1561 if (retval) {
1562 TW_PRINTK(host, TW_DRIVER, 0x17, "Failed to enable pci device");
1563 goto out_disable_device;
1564 }
1565
1566 pci_set_master(pdev);
1567 pci_try_set_mwi(pdev);
1568
1569 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1570 if (retval)
1571 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1572 if (retval) {
1573 TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask");
1574 retval = -ENODEV;
1575 goto out_disable_device;
1576 }
1577
1578 host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
1579 if (!host) {
1580 TW_PRINTK(host, TW_DRIVER, 0x19, "Failed to allocate memory for device extension");
1581 retval = -ENOMEM;
1582 goto out_disable_device;
1583 }
1584 tw_dev = shost_priv(host);
1585
1586
1587 tw_dev->host = host;
1588 tw_dev->tw_pci_dev = pdev;
1589
1590 if (twl_initialize_device_extension(tw_dev)) {
1591 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension");
1592 retval = -ENOMEM;
1593 goto out_free_device_extension;
1594 }
1595
1596
1597 retval = pci_request_regions(pdev, "3w-sas");
1598 if (retval) {
1599 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Failed to get mem region");
1600 goto out_free_device_extension;
1601 }
1602
1603
1604 tw_dev->base_addr = pci_iomap(pdev, 1, 0);
1605 if (!tw_dev->base_addr) {
1606 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap");
1607 retval = -ENOMEM;
1608 goto out_release_mem_region;
1609 }
1610
1611
1612 TWL_MASK_INTERRUPTS(tw_dev);
1613
1614
1615 if (twl_reset_sequence(tw_dev, 0)) {
1616 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe");
1617 retval = -ENOMEM;
1618 goto out_iounmap;
1619 }
1620
1621
1622 host->max_id = TW_MAX_UNITS;
1623 host->max_cmd_len = TW_MAX_CDB_LEN;
1624 host->max_lun = TW_MAX_LUNS;
1625 host->max_channel = 0;
1626
1627
1628 retval = scsi_add_host(host, &pdev->dev);
1629 if (retval) {
1630 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "scsi add host failed");
1631 goto out_iounmap;
1632 }
1633
1634 pci_set_drvdata(pdev, host);
1635
1636 printk(KERN_WARNING "3w-sas: scsi%d: Found an LSI 3ware %s Controller at 0x%llx, IRQ: %d.\n",
1637 host->host_no,
1638 (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
1639 TW_PARAM_MODEL, TW_PARAM_MODEL_LENGTH),
1640 (u64)pci_resource_start(pdev, 1), pdev->irq);
1641
1642 ptr_phycount = twl_get_param(tw_dev, 2, TW_PARAM_PHY_SUMMARY_TABLE,
1643 TW_PARAM_PHYCOUNT, TW_PARAM_PHYCOUNT_LENGTH);
1644 if (ptr_phycount)
1645 phycount = le32_to_cpu(*(int *)ptr_phycount);
1646
1647 printk(KERN_WARNING "3w-sas: scsi%d: Firmware %s, BIOS %s, Phys: %d.\n",
1648 host->host_no,
1649 (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE,
1650 TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH),
1651 (char *)twl_get_param(tw_dev, 2, TW_VERSION_TABLE,
1652 TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH),
1653 phycount);
1654
1655
1656 if (use_msi && !pci_enable_msi(pdev))
1657 set_bit(TW_USING_MSI, &tw_dev->flags);
1658
1659
1660 retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
1661 if (retval) {
1662 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Error requesting IRQ");
1663 goto out_remove_host;
1664 }
1665
1666 twl_device_extension_list[twl_device_extension_count] = tw_dev;
1667 twl_device_extension_count++;
1668
1669
1670 TWL_UNMASK_INTERRUPTS(tw_dev);
1671
1672
1673 scsi_scan_host(host);
1674
1675
1676 if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr))
1677 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Failed to create sysfs binary file: 3ware_aen_read");
1678 if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr))
1679 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Failed to create sysfs binary file: 3ware_compat_info");
1680
1681 if (twl_major == -1) {
1682 if ((twl_major = register_chrdev (0, "twl", &twl_fops)) < 0)
1683 TW_PRINTK(host, TW_DRIVER, 0x22, "Failed to register character device");
1684 }
1685 tw_dev->online = 1;
1686 return 0;
1687
1688out_remove_host:
1689 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1690 pci_disable_msi(pdev);
1691 scsi_remove_host(host);
1692out_iounmap:
1693 iounmap(tw_dev->base_addr);
1694out_release_mem_region:
1695 pci_release_regions(pdev);
1696out_free_device_extension:
1697 twl_free_device_extension(tw_dev);
1698 scsi_host_put(host);
1699out_disable_device:
1700 pci_disable_device(pdev);
1701
1702 return retval;
1703}
1704
1705
1706static void twl_remove(struct pci_dev *pdev)
1707{
1708 struct Scsi_Host *host = pci_get_drvdata(pdev);
1709 TW_Device_Extension *tw_dev;
1710
1711 if (!host)
1712 return;
1713
1714 tw_dev = (TW_Device_Extension *)host->hostdata;
1715
1716 if (!tw_dev->online)
1717 return;
1718
1719
1720 sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr);
1721 sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr);
1722
1723 scsi_remove_host(tw_dev->host);
1724
1725
1726 if (twl_major >= 0) {
1727 unregister_chrdev(twl_major, "twl");
1728 twl_major = -1;
1729 }
1730
1731
1732 __twl_shutdown(tw_dev);
1733
1734
1735 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1736 pci_disable_msi(pdev);
1737
1738
1739 iounmap(tw_dev->base_addr);
1740
1741
1742 pci_release_regions(pdev);
1743
1744
1745 twl_free_device_extension(tw_dev);
1746
1747 scsi_host_put(tw_dev->host);
1748 pci_disable_device(pdev);
1749 twl_device_extension_count--;
1750}
1751
1752
1753static int __maybe_unused twl_suspend(struct device *dev)
1754{
1755 struct Scsi_Host *host = dev_get_drvdata(dev);
1756 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
1757
1758 printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no);
1759
1760 TWL_MASK_INTERRUPTS(tw_dev);
1761
1762 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
1763
1764
1765 if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
1766 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x23, "Connection shutdown failed during suspend");
1767 } else {
1768 printk(KERN_WARNING "3w-sas: Suspend complete.\n");
1769 }
1770
1771
1772 TWL_CLEAR_DB_INTERRUPT(tw_dev);
1773
1774 return 0;
1775}
1776
1777
1778static int __maybe_unused twl_resume(struct device *dev)
1779{
1780 int retval = 0;
1781 struct pci_dev *pdev = to_pci_dev(dev);
1782 struct Scsi_Host *host = pci_get_drvdata(pdev);
1783 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
1784
1785 printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no);
1786 pci_try_set_mwi(pdev);
1787
1788 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
1789 if (retval)
1790 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
1791 if (retval) {
1792 TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume");
1793 retval = -ENODEV;
1794 goto out_disable_device;
1795 }
1796
1797
1798 if (twl_reset_sequence(tw_dev, 0)) {
1799 retval = -ENODEV;
1800 goto out_disable_device;
1801 }
1802
1803
1804 retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev);
1805 if (retval) {
1806 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Error requesting IRQ during resume");
1807 retval = -ENODEV;
1808 goto out_disable_device;
1809 }
1810
1811
1812 if (test_bit(TW_USING_MSI, &tw_dev->flags))
1813 pci_enable_msi(pdev);
1814
1815
1816 TWL_UNMASK_INTERRUPTS(tw_dev);
1817
1818 printk(KERN_WARNING "3w-sas: Resume complete.\n");
1819 return 0;
1820
1821out_disable_device:
1822 scsi_remove_host(host);
1823
1824 return retval;
1825}
1826
1827
1828static struct pci_device_id twl_pci_tbl[] = {
1829 { PCI_VDEVICE(3WARE, PCI_DEVICE_ID_3WARE_9750) },
1830 { }
1831};
1832MODULE_DEVICE_TABLE(pci, twl_pci_tbl);
1833
1834static SIMPLE_DEV_PM_OPS(twl_pm_ops, twl_suspend, twl_resume);
1835
1836
1837static struct pci_driver twl_driver = {
1838 .name = "3w-sas",
1839 .id_table = twl_pci_tbl,
1840 .probe = twl_probe,
1841 .remove = twl_remove,
1842 .driver.pm = &twl_pm_ops,
1843 .shutdown = twl_shutdown
1844};
1845
1846
1847static int __init twl_init(void)
1848{
1849 printk(KERN_INFO "LSI 3ware SAS/SATA-RAID Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
1850
1851 return pci_register_driver(&twl_driver);
1852}
1853
1854
1855static void __exit twl_exit(void)
1856{
1857 pci_unregister_driver(&twl_driver);
1858}
1859
1860module_init(twl_init);
1861module_exit(twl_exit);
1862
1863
