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199#include <linux/module.h>
200#include <linux/reboot.h>
201#include <linux/spinlock.h>
202#include <linux/interrupt.h>
203#include <linux/moduleparam.h>
204#include <linux/errno.h>
205#include <linux/types.h>
206#include <linux/delay.h>
207#include <linux/gfp.h>
208#include <linux/pci.h>
209#include <linux/time.h>
210#include <linux/mutex.h>
211#include <asm/io.h>
212#include <asm/irq.h>
213#include <linux/uaccess.h>
214#include <scsi/scsi.h>
215#include <scsi/scsi_host.h>
216#include <scsi/scsi_tcq.h>
217#include <scsi/scsi_cmnd.h>
218#include <scsi/scsi_eh.h>
219#include "3w-xxxx.h"
220
221
222#define TW_DRIVER_VERSION "1.26.02.003"
223static DEFINE_MUTEX(tw_mutex);
224static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT];
225static int tw_device_extension_count = 0;
226static int twe_major = -1;
227
228
229MODULE_AUTHOR("LSI");
230MODULE_DESCRIPTION("3ware Storage Controller Linux Driver");
231MODULE_LICENSE("GPL");
232MODULE_VERSION(TW_DRIVER_VERSION);
233
234
235static int tw_reset_device_extension(TW_Device_Extension *tw_dev);
236
237
238
239
240static int tw_check_bits(u32 status_reg_value)
241{
242 if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) {
243 dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value);
244 return 1;
245 }
246 if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) {
247 dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value);
248 return 1;
249 }
250
251 return 0;
252}
253
254
255static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host)
256{
257 char host[16];
258
259 dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n");
260
261 if (print_host)
262 sprintf(host, " scsi%d:", tw_dev->host->host_no);
263 else
264 host[0] = '\0';
265
266 if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) {
267 printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host);
268 outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
269 }
270
271 if (status_reg_value & TW_STATUS_PCI_ABORT) {
272 printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host);
273 outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev));
274 pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT);
275 }
276
277 if (status_reg_value & TW_STATUS_QUEUE_ERROR) {
278 printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host);
279 outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
280 }
281
282 if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) {
283 printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host);
284 outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
285 }
286
287 if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
288 if (tw_dev->reset_print == 0) {
289 printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host);
290 tw_dev->reset_print = 1;
291 }
292 return 1;
293 }
294
295 return 0;
296}
297
298
299static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
300{
301 u32 status_reg_value;
302 unsigned long before;
303 int retval = 1;
304
305 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
306 before = jiffies;
307
308 if (tw_check_bits(status_reg_value))
309 tw_decode_bits(tw_dev, status_reg_value, 0);
310
311 while ((status_reg_value & flag) != flag) {
312 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
313
314 if (tw_check_bits(status_reg_value))
315 tw_decode_bits(tw_dev, status_reg_value, 0);
316
317 if (time_after(jiffies, before + HZ * seconds))
318 goto out;
319
320 msleep(50);
321 }
322 retval = 0;
323out:
324 return retval;
325}
326
327
328static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds)
329{
330 u32 status_reg_value;
331 unsigned long before;
332 int retval = 1;
333
334 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
335 before = jiffies;
336
337 if (tw_check_bits(status_reg_value))
338 tw_decode_bits(tw_dev, status_reg_value, 0);
339
340 while ((status_reg_value & flag) != 0) {
341 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
342
343 if (tw_check_bits(status_reg_value))
344 tw_decode_bits(tw_dev, status_reg_value, 0);
345
346 if (time_after(jiffies, before + HZ * seconds))
347 goto out;
348
349 msleep(50);
350 }
351 retval = 0;
352out:
353 return retval;
354}
355
356
357static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id)
358{
359 u32 status_reg_value;
360 unsigned long command_que_value;
361
362 dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n");
363 command_que_value = tw_dev->command_packet_physical_address[request_id];
364 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
365
366 if (tw_check_bits(status_reg_value)) {
367 dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n");
368 tw_decode_bits(tw_dev, status_reg_value, 1);
369 }
370
371 if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) {
372
373 outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
374 tw_dev->state[request_id] = TW_S_POSTED;
375 tw_dev->posted_request_count++;
376 if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) {
377 tw_dev->max_posted_request_count = tw_dev->posted_request_count;
378 }
379 } else {
380
381 if (tw_dev->state[request_id] != TW_S_PENDING) {
382 tw_dev->state[request_id] = TW_S_PENDING;
383 tw_dev->pending_request_count++;
384 if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) {
385 tw_dev->max_pending_request_count = tw_dev->pending_request_count;
386 }
387 tw_dev->pending_queue[tw_dev->pending_tail] = request_id;
388 if (tw_dev->pending_tail == TW_Q_LENGTH-1) {
389 tw_dev->pending_tail = TW_Q_START;
390 } else {
391 tw_dev->pending_tail = tw_dev->pending_tail + 1;
392 }
393 }
394 TW_UNMASK_COMMAND_INTERRUPT(tw_dev);
395 return 1;
396 }
397 return 0;
398}
399
400
401static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense)
402{
403 int i;
404 TW_Command *command;
405
406 dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n");
407 command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
408
409 printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev->host->host_no, command->status, command->flags, TW_UNIT_OUT(command->unit__hostid));
410
411
412 if (fill_sense) {
413 if ((command->status == 0xc7) || (command->status == 0xcb)) {
414 for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) {
415 if (command->flags == tw_sense_table[i][0]) {
416
417
418 tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70);
419
420
421 tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1];
422
423
424 tw_dev->srb[request_id]->sense_buffer[7] = 0xa;
425
426
427 tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2];
428
429
430 tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3];
431
432 tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
433 return TW_ISR_DONT_RESULT;
434 }
435 }
436 }
437
438
439 return 1;
440 }
441
442 return 0;
443}
444
445
446static int tw_check_errors(TW_Device_Extension *tw_dev)
447{
448 u32 status_reg_value;
449
450 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
451
452 if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) {
453 tw_decode_bits(tw_dev, status_reg_value, 0);
454 return 1;
455 }
456
457 return 0;
458}
459
460
461static void tw_empty_response_que(TW_Device_Extension *tw_dev)
462{
463 u32 status_reg_value, response_que_value;
464
465 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
466
467 while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
468 response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
469 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
470 }
471}
472
473
474static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id)
475{
476 tw_dev->free_queue[tw_dev->free_tail] = request_id;
477 tw_dev->state[request_id] = TW_S_FINISHED;
478 tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
479}
480
481
482static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id)
483{
484 *request_id = tw_dev->free_queue[tw_dev->free_head];
485 tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
486 tw_dev->state[*request_id] = TW_S_STARTED;
487}
488
489
490static ssize_t tw_show_stats(struct device *dev, struct device_attribute *attr,
491 char *buf)
492{
493 struct Scsi_Host *host = class_to_shost(dev);
494 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
495 unsigned long flags = 0;
496 ssize_t len;
497
498 spin_lock_irqsave(tw_dev->host->host_lock, flags);
499 len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n"
500 "Current commands posted: %4d\n"
501 "Max commands posted: %4d\n"
502 "Current pending commands: %4d\n"
503 "Max pending commands: %4d\n"
504 "Last sgl length: %4d\n"
505 "Max sgl length: %4d\n"
506 "Last sector count: %4d\n"
507 "Max sector count: %4d\n"
508 "SCSI Host Resets: %4d\n"
509 "AEN's: %4d\n",
510 TW_DRIVER_VERSION,
511 tw_dev->posted_request_count,
512 tw_dev->max_posted_request_count,
513 tw_dev->pending_request_count,
514 tw_dev->max_pending_request_count,
515 tw_dev->sgl_entries,
516 tw_dev->max_sgl_entries,
517 tw_dev->sector_count,
518 tw_dev->max_sector_count,
519 tw_dev->num_resets,
520 tw_dev->aen_count);
521 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
522 return len;
523}
524
525
526static struct device_attribute tw_host_stats_attr = {
527 .attr = {
528 .name = "stats",
529 .mode = S_IRUGO,
530 },
531 .show = tw_show_stats
532};
533
534
535static struct device_attribute *tw_host_attrs[] = {
536 &tw_host_stats_attr,
537 NULL,
538};
539
540
541static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
542{
543 TW_Command *command_packet;
544 TW_Param *param;
545 unsigned long command_que_value;
546 u32 status_reg_value;
547 unsigned long param_value = 0;
548
549 dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n");
550
551 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
552 if (tw_check_bits(status_reg_value)) {
553 dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n");
554 tw_decode_bits(tw_dev, status_reg_value, 1);
555 return 1;
556 }
557 if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
558 printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n");
559 return 1;
560 }
561 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
562 memset(command_packet, 0, sizeof(TW_Sector));
563 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
564 command_packet->size = 4;
565 command_packet->request_id = request_id;
566 command_packet->status = 0;
567 command_packet->flags = 0;
568 command_packet->byte6.parameter_count = 1;
569 command_que_value = tw_dev->command_packet_physical_address[request_id];
570 if (command_que_value == 0) {
571 printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n");
572 return 1;
573 }
574
575 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
576 printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n");
577 return 1;
578 }
579 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
580 memset(param, 0, sizeof(TW_Sector));
581 param->table_id = 0x401;
582 param->parameter_id = 2;
583 param->parameter_size_bytes = 2;
584 param_value = tw_dev->alignment_physical_address[request_id];
585 if (param_value == 0) {
586 printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n");
587 return 1;
588 }
589 command_packet->byte8.param.sgl[0].address = param_value;
590 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
591
592
593 if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) {
594 dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n");
595 tw_dev->srb[request_id] = NULL;
596 tw_dev->state[request_id] = TW_S_POSTED;
597 outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
598 } else {
599 printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n");
600 return 1;
601 }
602
603 return 0;
604}
605
606
607static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id)
608{
609 TW_Param *param;
610 unsigned short aen;
611 int error = 0, table_max = 0;
612
613 dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n");
614 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
615 printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n");
616 return 1;
617 }
618 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
619 aen = *(unsigned short *)(param->data);
620 dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen);
621
622
623 if (aen == 0x0ff) {
624 printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no);
625 } else {
626 table_max = ARRAY_SIZE(tw_aen_string);
627 if ((aen & 0x0ff) < table_max) {
628 if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
629 printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8);
630 } else {
631 if (aen != 0x0)
632 printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]);
633 }
634 } else {
635 printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen);
636 }
637 }
638 if (aen != TW_AEN_QUEUE_EMPTY) {
639 tw_dev->aen_count++;
640
641
642 tw_dev->aen_queue[tw_dev->aen_tail] = aen;
643 if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
644 tw_dev->aen_tail = TW_Q_START;
645 } else {
646 tw_dev->aen_tail = tw_dev->aen_tail + 1;
647 }
648 if (tw_dev->aen_head == tw_dev->aen_tail) {
649 if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
650 tw_dev->aen_head = TW_Q_START;
651 } else {
652 tw_dev->aen_head = tw_dev->aen_head + 1;
653 }
654 }
655
656 error = tw_aen_read_queue(tw_dev, request_id);
657 if (error) {
658 printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no);
659 tw_dev->state[request_id] = TW_S_COMPLETED;
660 tw_state_request_finish(tw_dev, request_id);
661 }
662 } else {
663 tw_dev->state[request_id] = TW_S_COMPLETED;
664 tw_state_request_finish(tw_dev, request_id);
665 }
666
667 return 0;
668}
669
670
671static int tw_aen_drain_queue(TW_Device_Extension *tw_dev)
672{
673 TW_Command *command_packet;
674 TW_Param *param;
675 int request_id = 0;
676 unsigned long command_que_value;
677 unsigned long param_value;
678 TW_Response_Queue response_queue;
679 unsigned short aen;
680 unsigned short aen_code;
681 int finished = 0;
682 int first_reset = 0;
683 int queue = 0;
684 int found = 0, table_max = 0;
685
686 dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n");
687
688 if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) {
689 dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count);
690 return 1;
691 }
692 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
693
694
695 tw_empty_response_que(tw_dev);
696
697
698 if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
699 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n");
700 return 1;
701 }
702 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
703 memset(command_packet, 0, sizeof(TW_Sector));
704 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
705 command_packet->size = 4;
706 command_packet->request_id = request_id;
707 command_packet->status = 0;
708 command_packet->flags = 0;
709 command_packet->byte6.parameter_count = 1;
710 command_que_value = tw_dev->command_packet_physical_address[request_id];
711 if (command_que_value == 0) {
712 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n");
713 return 1;
714 }
715
716
717 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
718 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n");
719 return 1;
720 }
721 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
722 memset(param, 0, sizeof(TW_Sector));
723 param->table_id = 0x401;
724 param->parameter_id = 2;
725 param->parameter_size_bytes = 2;
726 param_value = tw_dev->alignment_physical_address[request_id];
727 if (param_value == 0) {
728 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n");
729 return 1;
730 }
731 command_packet->byte8.param.sgl[0].address = param_value;
732 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
733
734
735 do {
736
737 outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
738
739
740 if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
741 response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
742 request_id = TW_RESID_OUT(response_queue.response_id);
743
744 if (request_id != 0) {
745
746 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n");
747 return 1;
748 }
749
750 if (command_packet->status != 0) {
751 if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) {
752
753 tw_decode_sense(tw_dev, request_id, 0);
754 return 1;
755 } else {
756
757 return 0;
758 }
759 }
760
761
762 aen = *(unsigned short *)(param->data);
763 aen_code = (aen & 0x0ff);
764 queue = 0;
765 switch (aen_code) {
766 case TW_AEN_QUEUE_EMPTY:
767 dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
768 if (first_reset != 1) {
769 return 1;
770 } else {
771 finished = 1;
772 }
773 break;
774 case TW_AEN_SOFT_RESET:
775 if (first_reset == 0) {
776 first_reset = 1;
777 } else {
778 printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
779 tw_dev->aen_count++;
780 queue = 1;
781 }
782 break;
783 default:
784 if (aen == 0x0ff) {
785 printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n");
786 } else {
787 table_max = ARRAY_SIZE(tw_aen_string);
788 if ((aen & 0x0ff) < table_max) {
789 if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') {
790 printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8);
791 } else {
792 printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]);
793 }
794 } else
795 printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen);
796 }
797 tw_dev->aen_count++;
798 queue = 1;
799 }
800
801
802 if (queue == 1) {
803 tw_dev->aen_queue[tw_dev->aen_tail] = aen;
804 if (tw_dev->aen_tail == TW_Q_LENGTH - 1) {
805 tw_dev->aen_tail = TW_Q_START;
806 } else {
807 tw_dev->aen_tail = tw_dev->aen_tail + 1;
808 }
809 if (tw_dev->aen_head == tw_dev->aen_tail) {
810 if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
811 tw_dev->aen_head = TW_Q_START;
812 } else {
813 tw_dev->aen_head = tw_dev->aen_head + 1;
814 }
815 }
816 }
817 found = 1;
818 }
819 if (found == 0) {
820 printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n");
821 return 1;
822 }
823 } while (finished == 0);
824
825 return 0;
826}
827
828
829static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
830{
831 int i;
832 dma_addr_t dma_handle;
833 unsigned long *cpu_addr = NULL;
834
835 dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n");
836
837 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev,
838 size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL);
839 if (cpu_addr == NULL) {
840 printk(KERN_WARNING "3w-xxxx: dma_alloc_coherent() failed.\n");
841 return 1;
842 }
843
844 if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) {
845 printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n");
846 dma_free_coherent(&tw_dev->tw_pci_dev->dev, size * TW_Q_LENGTH,
847 cpu_addr, dma_handle);
848 return 1;
849 }
850
851 memset(cpu_addr, 0, size*TW_Q_LENGTH);
852
853 for (i=0;i<TW_Q_LENGTH;i++) {
854 switch(which) {
855 case 0:
856 tw_dev->command_packet_physical_address[i] = dma_handle+(i*size);
857 tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
858 break;
859 case 1:
860 tw_dev->alignment_physical_address[i] = dma_handle+(i*size);
861 tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
862 break;
863 default:
864 printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n");
865 return 1;
866 }
867 }
868
869 return 0;
870}
871
872
873static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
874{
875 int request_id;
876 dma_addr_t dma_handle;
877 unsigned short tw_aen_code;
878 unsigned long flags;
879 unsigned int data_buffer_length = 0;
880 unsigned long data_buffer_length_adjusted = 0;
881 struct inode *inode = file_inode(file);
882 unsigned long *cpu_addr;
883 long timeout;
884 TW_New_Ioctl *tw_ioctl;
885 TW_Passthru *passthru;
886 TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)];
887 int retval = -EFAULT;
888 void __user *argp = (void __user *)arg;
889
890 dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n");
891
892 mutex_lock(&tw_mutex);
893
894 if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
895 mutex_unlock(&tw_mutex);
896 return -EINTR;
897 }
898
899
900 if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int)))
901 goto out;
902
903
904 if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) {
905 retval = -EINVAL;
906 goto out;
907 }
908
909
910 data_buffer_length_adjusted = (data_buffer_length + 511) & ~511;
911
912
913 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL);
914 if (cpu_addr == NULL) {
915 retval = -ENOMEM;
916 goto out;
917 }
918
919 tw_ioctl = (TW_New_Ioctl *)cpu_addr;
920
921
922 if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1))
923 goto out2;
924
925 passthru = (TW_Passthru *)&tw_ioctl->firmware_command;
926
927
928 switch (cmd) {
929 case TW_OP_NOP:
930 dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n");
931 break;
932 case TW_OP_AEN_LISTEN:
933 dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n");
934 memset(tw_ioctl->data_buffer, 0, data_buffer_length);
935
936 spin_lock_irqsave(tw_dev->host->host_lock, flags);
937 if (tw_dev->aen_head == tw_dev->aen_tail) {
938 tw_aen_code = TW_AEN_QUEUE_EMPTY;
939 } else {
940 tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head];
941 if (tw_dev->aen_head == TW_Q_LENGTH - 1) {
942 tw_dev->aen_head = TW_Q_START;
943 } else {
944 tw_dev->aen_head = tw_dev->aen_head + 1;
945 }
946 }
947 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
948 memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code));
949 break;
950 case TW_CMD_PACKET_WITH_DATA:
951 dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n");
952 spin_lock_irqsave(tw_dev->host->host_lock, flags);
953
954 tw_state_request_start(tw_dev, &request_id);
955
956
957 tw_dev->srb[request_id] = NULL;
958
959
960 tw_dev->chrdev_request_id = request_id;
961
962 tw_ioctl->firmware_command.request_id = request_id;
963
964
965 switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) {
966 case 2:
967 tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1;
968 tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted;
969 break;
970 case 3:
971 tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1;
972 tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted;
973 break;
974 case 5:
975 passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1;
976 passthru->sg_list[0].length = data_buffer_length_adjusted;
977 break;
978 }
979
980 memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command));
981
982
983 tw_post_command_packet(tw_dev, request_id);
984 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
985
986 timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
987
988
989 timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
990
991
992 if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
993
994 printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd);
995 retval = -EIO;
996 if (tw_reset_device_extension(tw_dev)) {
997 printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no);
998 }
999 goto out2;
1000 }
1001
1002
1003 memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command));
1004
1005
1006 spin_lock_irqsave(tw_dev->host->host_lock, flags);
1007 tw_dev->posted_request_count--;
1008 tw_dev->state[request_id] = TW_S_COMPLETED;
1009 tw_state_request_finish(tw_dev, request_id);
1010 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
1011 break;
1012 default:
1013 retval = -ENOTTY;
1014 goto out2;
1015 }
1016
1017
1018 if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1))
1019 goto out2;
1020 retval = 0;
1021out2:
1022
1023 dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle);
1024out:
1025 mutex_unlock(&tw_dev->ioctl_lock);
1026 mutex_unlock(&tw_mutex);
1027 return retval;
1028}
1029
1030
1031
1032static int tw_chrdev_open(struct inode *inode, struct file *file)
1033{
1034 unsigned int minor_number;
1035
1036 dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n");
1037
1038 if (!capable(CAP_SYS_ADMIN))
1039 return -EACCES;
1040
1041 minor_number = iminor(inode);
1042 if (minor_number >= tw_device_extension_count)
1043 return -ENODEV;
1044
1045 return 0;
1046}
1047
1048
1049static const struct file_operations tw_fops = {
1050 .owner = THIS_MODULE,
1051 .unlocked_ioctl = tw_chrdev_ioctl,
1052 .compat_ioctl = compat_ptr_ioctl,
1053 .open = tw_chrdev_open,
1054 .release = NULL,
1055 .llseek = noop_llseek,
1056};
1057
1058
1059static void tw_free_device_extension(TW_Device_Extension *tw_dev)
1060{
1061 dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n");
1062
1063
1064 if (tw_dev->command_packet_virtual_address[0])
1065 dma_free_coherent(&tw_dev->tw_pci_dev->dev,
1066 sizeof(TW_Command) * TW_Q_LENGTH,
1067 tw_dev->command_packet_virtual_address[0],
1068 tw_dev->command_packet_physical_address[0]);
1069
1070 if (tw_dev->alignment_virtual_address[0])
1071 dma_free_coherent(&tw_dev->tw_pci_dev->dev,
1072 sizeof(TW_Sector) * TW_Q_LENGTH,
1073 tw_dev->alignment_virtual_address[0],
1074 tw_dev->alignment_physical_address[0]);
1075}
1076
1077
1078static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits)
1079{
1080 unsigned long command_que_value;
1081 TW_Command *command_packet;
1082 TW_Response_Queue response_queue;
1083 int request_id = 0;
1084
1085 dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n");
1086
1087
1088 if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
1089 printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n");
1090 return 1;
1091 }
1092
1093 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1094 memset(command_packet, 0, sizeof(TW_Sector));
1095 command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION);
1096 command_packet->size = TW_INIT_COMMAND_PACKET_SIZE;
1097 command_packet->request_id = request_id;
1098 command_packet->status = 0x0;
1099 command_packet->flags = 0x0;
1100 command_packet->byte6.message_credits = message_credits;
1101 command_packet->byte8.init_connection.response_queue_pointer = 0x0;
1102 command_que_value = tw_dev->command_packet_physical_address[request_id];
1103
1104 if (command_que_value == 0) {
1105 printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n");
1106 return 1;
1107 }
1108
1109
1110 outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
1111
1112
1113 if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
1114 response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
1115 request_id = TW_RESID_OUT(response_queue.response_id);
1116
1117 if (request_id != 0) {
1118
1119 printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n");
1120 return 1;
1121 }
1122 if (command_packet->status != 0) {
1123
1124 tw_decode_sense(tw_dev, request_id, 0);
1125 return 1;
1126 }
1127 }
1128 return 0;
1129}
1130
1131
1132static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size,
1133 unsigned char *val)
1134{
1135 TW_Param *param;
1136 TW_Command *command_packet;
1137 TW_Response_Queue response_queue;
1138 int request_id = 0;
1139 unsigned long command_que_value;
1140 unsigned long param_value;
1141
1142
1143 if (tw_dev->command_packet_virtual_address[request_id] == NULL) {
1144 printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n");
1145 return 1;
1146 }
1147 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1148 memset(command_packet, 0, sizeof(TW_Sector));
1149 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1150
1151 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
1152 param->table_id = 0x404;
1153 param->parameter_id = parm;
1154 param->parameter_size_bytes = param_size;
1155 memcpy(param->data, val, param_size);
1156
1157 param_value = tw_dev->alignment_physical_address[request_id];
1158 if (param_value == 0) {
1159 printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n");
1160 tw_dev->state[request_id] = TW_S_COMPLETED;
1161 tw_state_request_finish(tw_dev, request_id);
1162 tw_dev->srb[request_id]->result = (DID_OK << 16);
1163 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
1164 }
1165 command_packet->byte8.param.sgl[0].address = param_value;
1166 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
1167
1168 command_packet->size = 4;
1169 command_packet->request_id = request_id;
1170 command_packet->byte6.parameter_count = 1;
1171
1172 command_que_value = tw_dev->command_packet_physical_address[request_id];
1173 if (command_que_value == 0) {
1174 printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n");
1175 return 1;
1176 }
1177
1178
1179 outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
1180
1181
1182 if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) {
1183 response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
1184 request_id = TW_RESID_OUT(response_queue.response_id);
1185
1186 if (request_id != 0) {
1187
1188 printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n");
1189 return 1;
1190 }
1191 if (command_packet->status != 0) {
1192
1193 tw_decode_sense(tw_dev, request_id, 0);
1194 return 1;
1195 }
1196 }
1197
1198 return 0;
1199}
1200
1201
1202static int tw_reset_sequence(TW_Device_Extension *tw_dev)
1203{
1204 int error = 0;
1205 int tries = 0;
1206 unsigned char c = 1;
1207
1208
1209 while (tries < TW_MAX_RESET_TRIES) {
1210 TW_SOFT_RESET(tw_dev);
1211
1212 error = tw_aen_drain_queue(tw_dev);
1213 if (error) {
1214 printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no);
1215 tries++;
1216 continue;
1217 }
1218
1219
1220 if (tw_check_errors(tw_dev)) {
1221 printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no);
1222 tries++;
1223 continue;
1224 }
1225
1226
1227 break;
1228 }
1229
1230 if (tries >= TW_MAX_RESET_TRIES) {
1231 printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no);
1232 return 1;
1233 }
1234
1235 error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS);
1236 if (error) {
1237 printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no);
1238 return 1;
1239 }
1240
1241 error = tw_setfeature(tw_dev, 2, 1, &c);
1242 if (error) {
1243 printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n");
1244 }
1245
1246 return 0;
1247}
1248
1249
1250static int tw_initialize_device_extension(TW_Device_Extension *tw_dev)
1251{
1252 int i, error=0;
1253
1254 dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n");
1255
1256
1257 error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0);
1258 if (error) {
1259 printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n");
1260 return 1;
1261 }
1262
1263
1264 error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1);
1265 if (error) {
1266 printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n");
1267 return 1;
1268 }
1269
1270 for (i=0;i<TW_Q_LENGTH;i++) {
1271 tw_dev->free_queue[i] = i;
1272 tw_dev->state[i] = TW_S_INITIAL;
1273 }
1274
1275 tw_dev->pending_head = TW_Q_START;
1276 tw_dev->pending_tail = TW_Q_START;
1277 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1278
1279 mutex_init(&tw_dev->ioctl_lock);
1280 init_waitqueue_head(&tw_dev->ioctl_wqueue);
1281
1282 return 0;
1283}
1284
1285
1286static int tw_reset_device_extension(TW_Device_Extension *tw_dev)
1287{
1288 int i = 0;
1289 struct scsi_cmnd *srb;
1290 unsigned long flags = 0;
1291
1292 dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n");
1293
1294 set_bit(TW_IN_RESET, &tw_dev->flags);
1295 TW_DISABLE_INTERRUPTS(tw_dev);
1296 TW_MASK_COMMAND_INTERRUPT(tw_dev);
1297 spin_lock_irqsave(tw_dev->host->host_lock, flags);
1298
1299
1300 for (i=0;i<TW_Q_LENGTH;i++) {
1301 if ((tw_dev->state[i] != TW_S_FINISHED) &&
1302 (tw_dev->state[i] != TW_S_INITIAL) &&
1303 (tw_dev->state[i] != TW_S_COMPLETED)) {
1304 srb = tw_dev->srb[i];
1305 if (srb != NULL) {
1306 srb->result = (DID_RESET << 16);
1307 scsi_dma_unmap(srb);
1308 srb->scsi_done(srb);
1309 }
1310 }
1311 }
1312
1313
1314 for (i=0;i<TW_Q_LENGTH;i++) {
1315 tw_dev->free_queue[i] = i;
1316 tw_dev->state[i] = TW_S_INITIAL;
1317 }
1318 tw_dev->free_head = TW_Q_START;
1319 tw_dev->free_tail = TW_Q_START;
1320 tw_dev->posted_request_count = 0;
1321 tw_dev->pending_request_count = 0;
1322 tw_dev->pending_head = TW_Q_START;
1323 tw_dev->pending_tail = TW_Q_START;
1324 tw_dev->reset_print = 0;
1325
1326 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
1327
1328 if (tw_reset_sequence(tw_dev)) {
1329 printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no);
1330 return 1;
1331 }
1332
1333 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
1334 clear_bit(TW_IN_RESET, &tw_dev->flags);
1335 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1336
1337 return 0;
1338}
1339
1340
1341static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev,
1342 sector_t capacity, int geom[])
1343{
1344 int heads, sectors, cylinders;
1345 TW_Device_Extension *tw_dev;
1346
1347 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n");
1348 tw_dev = (TW_Device_Extension *)sdev->host->hostdata;
1349
1350 heads = 64;
1351 sectors = 32;
1352 cylinders = sector_div(capacity, heads * sectors);
1353
1354 if (capacity >= 0x200000) {
1355 heads = 255;
1356 sectors = 63;
1357 cylinders = sector_div(capacity, heads * sectors);
1358 }
1359
1360 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders);
1361 geom[0] = heads;
1362 geom[1] = sectors;
1363 geom[2] = cylinders;
1364
1365 return 0;
1366}
1367
1368
1369static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt)
1370{
1371 TW_Device_Extension *tw_dev=NULL;
1372 int retval = FAILED;
1373
1374 tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1375
1376 tw_dev->num_resets++;
1377
1378 sdev_printk(KERN_WARNING, SCpnt->device,
1379 "WARNING: Command (0x%x) timed out, resetting card.\n",
1380 SCpnt->cmnd[0]);
1381
1382
1383 mutex_lock(&tw_dev->ioctl_lock);
1384
1385
1386 if (tw_reset_device_extension(tw_dev)) {
1387 printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no);
1388 goto out;
1389 }
1390
1391 retval = SUCCESS;
1392out:
1393 mutex_unlock(&tw_dev->ioctl_lock);
1394 return retval;
1395}
1396
1397
1398static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id)
1399{
1400 TW_Param *param;
1401 TW_Command *command_packet;
1402 unsigned long command_que_value;
1403 unsigned long param_value;
1404
1405 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n");
1406
1407
1408 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1409 if (command_packet == NULL) {
1410 printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n");
1411 return 1;
1412 }
1413 memset(command_packet, 0, sizeof(TW_Sector));
1414 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
1415 command_packet->size = 4;
1416 command_packet->request_id = request_id;
1417 command_packet->status = 0;
1418 command_packet->flags = 0;
1419 command_packet->byte6.parameter_count = 1;
1420
1421
1422 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
1423 printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n");
1424 return 1;
1425 }
1426 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1427 memset(param, 0, sizeof(TW_Sector));
1428 param->table_id = 3;
1429 param->parameter_id = 3;
1430 param->parameter_size_bytes = TW_MAX_UNITS;
1431 param_value = tw_dev->alignment_physical_address[request_id];
1432 if (param_value == 0) {
1433 printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n");
1434 return 1;
1435 }
1436
1437 command_packet->byte8.param.sgl[0].address = param_value;
1438 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
1439 command_que_value = tw_dev->command_packet_physical_address[request_id];
1440 if (command_que_value == 0) {
1441 printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n");
1442 return 1;
1443 }
1444
1445
1446 tw_post_command_packet(tw_dev, request_id);
1447
1448 return 0;
1449}
1450
1451static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id,
1452 void *data, unsigned int len)
1453{
1454 scsi_sg_copy_from_buffer(tw_dev->srb[request_id], data, len);
1455}
1456
1457
1458static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id)
1459{
1460 unsigned char *is_unit_present;
1461 unsigned char request_buffer[36];
1462 TW_Param *param;
1463
1464 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n");
1465
1466 memset(request_buffer, 0, sizeof(request_buffer));
1467 request_buffer[0] = TYPE_DISK;
1468 request_buffer[1] = 0;
1469 request_buffer[2] = 0;
1470 request_buffer[4] = 31;
1471 memcpy(&request_buffer[8], "3ware ", 8);
1472 sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id);
1473 memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3);
1474 tw_transfer_internal(tw_dev, request_id, request_buffer,
1475 sizeof(request_buffer));
1476
1477 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1478 if (param == NULL) {
1479 printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n");
1480 return 1;
1481 }
1482 is_unit_present = &(param->data[0]);
1483
1484 if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
1485 tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1;
1486 } else {
1487 tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0;
1488 tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
1489 return TW_ISR_DONT_RESULT;
1490 }
1491
1492 return 0;
1493}
1494
1495
1496static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id)
1497{
1498 TW_Param *param;
1499 TW_Command *command_packet;
1500 unsigned long command_que_value;
1501 unsigned long param_value;
1502
1503 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n");
1504
1505
1506 if (tw_dev->srb[request_id]->cmnd[2] != 0x8) {
1507 tw_dev->state[request_id] = TW_S_COMPLETED;
1508 tw_state_request_finish(tw_dev, request_id);
1509 tw_dev->srb[request_id]->result = (DID_OK << 16);
1510 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
1511 return 0;
1512 }
1513
1514
1515 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1516 if (command_packet == NULL) {
1517 printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n");
1518 return 1;
1519 }
1520
1521
1522 memset(command_packet, 0, sizeof(TW_Sector));
1523 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
1524 command_packet->size = 4;
1525 command_packet->request_id = request_id;
1526 command_packet->status = 0;
1527 command_packet->flags = 0;
1528 command_packet->byte6.parameter_count = 1;
1529
1530
1531 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
1532 printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n");
1533 return 1;
1534 }
1535
1536 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1537 memset(param, 0, sizeof(TW_Sector));
1538 param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id;
1539 param->parameter_id = 7;
1540 param->parameter_size_bytes = 1;
1541 param_value = tw_dev->alignment_physical_address[request_id];
1542 if (param_value == 0) {
1543 printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n");
1544 return 1;
1545 }
1546
1547 command_packet->byte8.param.sgl[0].address = param_value;
1548 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
1549 command_que_value = tw_dev->command_packet_physical_address[request_id];
1550 if (command_que_value == 0) {
1551 printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n");
1552 return 1;
1553 }
1554
1555
1556 tw_post_command_packet(tw_dev, request_id);
1557
1558 return 0;
1559}
1560
1561
1562static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id)
1563{
1564 TW_Param *param;
1565 unsigned char *flags;
1566 unsigned char request_buffer[8];
1567
1568 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n");
1569
1570 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1571 if (param == NULL) {
1572 printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n");
1573 return 1;
1574 }
1575 flags = (char *)&(param->data[0]);
1576 memset(request_buffer, 0, sizeof(request_buffer));
1577
1578 request_buffer[0] = 0xf;
1579 request_buffer[1] = 0;
1580 request_buffer[2] = 0x10;
1581 request_buffer[3] = 0;
1582 request_buffer[4] = 0x8;
1583 request_buffer[5] = 0xa;
1584 if (*flags & 0x1)
1585 request_buffer[6] = 0x5;
1586 else
1587 request_buffer[6] = 0x1;
1588 tw_transfer_internal(tw_dev, request_id, request_buffer,
1589 sizeof(request_buffer));
1590
1591 return 0;
1592}
1593
1594
1595static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id)
1596{
1597 TW_Param *param;
1598 TW_Command *command_packet;
1599 unsigned long command_que_value;
1600 unsigned long param_value;
1601
1602 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n");
1603
1604
1605 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1606
1607 if (command_packet == NULL) {
1608 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n");
1609 return 1;
1610 }
1611 memset(command_packet, 0, sizeof(TW_Sector));
1612 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
1613 command_packet->size = 4;
1614 command_packet->request_id = request_id;
1615 command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id);
1616 command_packet->status = 0;
1617 command_packet->flags = 0;
1618 command_packet->byte6.block_count = 1;
1619
1620
1621 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
1622 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n");
1623 return 1;
1624 }
1625 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1626 memset(param, 0, sizeof(TW_Sector));
1627 param->table_id = TW_UNIT_INFORMATION_TABLE_BASE +
1628 tw_dev->srb[request_id]->device->id;
1629 param->parameter_id = 4;
1630 param->parameter_size_bytes = 4;
1631 param_value = tw_dev->alignment_physical_address[request_id];
1632 if (param_value == 0) {
1633 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n");
1634 return 1;
1635 }
1636
1637 command_packet->byte8.param.sgl[0].address = param_value;
1638 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
1639 command_que_value = tw_dev->command_packet_physical_address[request_id];
1640 if (command_que_value == 0) {
1641 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n");
1642 return 1;
1643 }
1644
1645
1646 tw_post_command_packet(tw_dev, request_id);
1647
1648 return 0;
1649}
1650
1651
1652static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id)
1653{
1654 unsigned char *param_data;
1655 u32 capacity;
1656 char buff[8];
1657 TW_Param *param;
1658
1659 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n");
1660
1661 memset(buff, 0, sizeof(buff));
1662 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1663 if (param == NULL) {
1664 printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n");
1665 return 1;
1666 }
1667 param_data = &(param->data[0]);
1668
1669 capacity = (param_data[3] << 24) | (param_data[2] << 16) |
1670 (param_data[1] << 8) | param_data[0];
1671
1672
1673 capacity -= 1;
1674
1675 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity);
1676
1677
1678 buff[0] = (capacity >> 24);
1679 buff[1] = (capacity >> 16) & 0xff;
1680 buff[2] = (capacity >> 8) & 0xff;
1681 buff[3] = capacity & 0xff;
1682
1683
1684 buff[4] = (TW_BLOCK_SIZE >> 24);
1685 buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff;
1686 buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff;
1687 buff[7] = TW_BLOCK_SIZE & 0xff;
1688
1689 tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff));
1690
1691 return 0;
1692}
1693
1694
1695static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id)
1696{
1697 TW_Command *command_packet;
1698 unsigned long command_que_value;
1699 u32 lba = 0x0, num_sectors = 0x0;
1700 int i, use_sg;
1701 struct scsi_cmnd *srb;
1702 struct scatterlist *sglist, *sg;
1703
1704 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n");
1705
1706 srb = tw_dev->srb[request_id];
1707
1708 sglist = scsi_sglist(srb);
1709 if (!sglist) {
1710 printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n");
1711 return 1;
1712 }
1713
1714
1715 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1716 if (command_packet == NULL) {
1717 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n");
1718 return 1;
1719 }
1720
1721 if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) {
1722 command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ);
1723 } else {
1724 command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE);
1725 }
1726
1727 command_packet->size = 3;
1728 command_packet->request_id = request_id;
1729 command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id);
1730 command_packet->status = 0;
1731 command_packet->flags = 0;
1732
1733 if (srb->cmnd[0] == WRITE_10) {
1734 if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10))
1735 command_packet->flags = 1;
1736 }
1737
1738 if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) {
1739 lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3];
1740 num_sectors = (u32)srb->cmnd[4];
1741 } else {
1742 lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5];
1743 num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8);
1744 }
1745
1746
1747 tw_dev->sector_count = num_sectors;
1748 if (tw_dev->sector_count > tw_dev->max_sector_count)
1749 tw_dev->max_sector_count = tw_dev->sector_count;
1750
1751 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors);
1752 command_packet->byte8.io.lba = lba;
1753 command_packet->byte6.block_count = num_sectors;
1754
1755 use_sg = scsi_dma_map(srb);
1756 if (use_sg <= 0)
1757 return 1;
1758
1759 scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) {
1760 command_packet->byte8.io.sgl[i].address = sg_dma_address(sg);
1761 command_packet->byte8.io.sgl[i].length = sg_dma_len(sg);
1762 command_packet->size+=2;
1763 }
1764
1765
1766 tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]);
1767 if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
1768 tw_dev->max_sgl_entries = tw_dev->sgl_entries;
1769
1770 command_que_value = tw_dev->command_packet_physical_address[request_id];
1771 if (command_que_value == 0) {
1772 dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n");
1773 return 1;
1774 }
1775
1776
1777 tw_post_command_packet(tw_dev, request_id);
1778
1779 return 0;
1780}
1781
1782
1783static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id)
1784{
1785 char request_buffer[18];
1786
1787 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n");
1788
1789 memset(request_buffer, 0, sizeof(request_buffer));
1790 request_buffer[0] = 0x70;
1791 request_buffer[7] = 10;
1792
1793 tw_transfer_internal(tw_dev, request_id, request_buffer,
1794 sizeof(request_buffer));
1795
1796 tw_dev->state[request_id] = TW_S_COMPLETED;
1797 tw_state_request_finish(tw_dev, request_id);
1798
1799
1800 tw_dev->srb[request_id]->result = (DID_ERROR << 16);
1801 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
1802
1803 return 0;
1804}
1805
1806
1807static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id)
1808{
1809 TW_Command *command_packet;
1810 unsigned long command_que_value;
1811
1812 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n");
1813
1814
1815 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1816 if (command_packet == NULL) {
1817 printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n");
1818 return 1;
1819 }
1820
1821
1822 memset(command_packet, 0, sizeof(TW_Sector));
1823 command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE);
1824 command_packet->size = 2;
1825 command_packet->request_id = request_id;
1826 command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id);
1827 command_packet->status = 0;
1828 command_packet->flags = 0;
1829 command_packet->byte6.parameter_count = 1;
1830 command_que_value = tw_dev->command_packet_physical_address[request_id];
1831 if (command_que_value == 0) {
1832 printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n");
1833 return 1;
1834 }
1835
1836
1837 tw_post_command_packet(tw_dev, request_id);
1838
1839 return 0;
1840}
1841
1842
1843static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id)
1844{
1845 TW_Param *param;
1846 TW_Command *command_packet;
1847 unsigned long command_que_value;
1848 unsigned long param_value;
1849
1850 dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n");
1851
1852
1853 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
1854 if (command_packet == NULL) {
1855 printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n");
1856 return 1;
1857 }
1858 memset(command_packet, 0, sizeof(TW_Sector));
1859 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
1860 command_packet->size = 4;
1861 command_packet->request_id = request_id;
1862 command_packet->status = 0;
1863 command_packet->flags = 0;
1864 command_packet->byte6.parameter_count = 1;
1865
1866
1867 if (tw_dev->alignment_virtual_address[request_id] == NULL) {
1868 printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n");
1869 return 1;
1870 }
1871 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1872 memset(param, 0, sizeof(TW_Sector));
1873 param->table_id = 3;
1874 param->parameter_id = 3;
1875 param->parameter_size_bytes = TW_MAX_UNITS;
1876 param_value = tw_dev->alignment_physical_address[request_id];
1877 if (param_value == 0) {
1878 printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n");
1879 return 1;
1880 }
1881
1882 command_packet->byte8.param.sgl[0].address = param_value;
1883 command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector);
1884 command_que_value = tw_dev->command_packet_physical_address[request_id];
1885 if (command_que_value == 0) {
1886 printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n");
1887 return 1;
1888 }
1889
1890
1891 tw_post_command_packet(tw_dev, request_id);
1892
1893 return 0;
1894}
1895
1896
1897static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id)
1898{
1899 unsigned char *is_unit_present;
1900 TW_Param *param;
1901
1902 dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n");
1903
1904 param = (TW_Param *)tw_dev->alignment_virtual_address[request_id];
1905 if (param == NULL) {
1906 printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n");
1907 return 1;
1908 }
1909 is_unit_present = &(param->data[0]);
1910
1911 if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) {
1912 tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1;
1913 } else {
1914 tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0;
1915 tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16);
1916 return TW_ISR_DONT_RESULT;
1917 }
1918
1919 return 0;
1920}
1921
1922
1923static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1924{
1925 unsigned char *command = SCpnt->cmnd;
1926 int request_id = 0;
1927 int retval = 1;
1928 TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1929
1930
1931 if (test_bit(TW_IN_RESET, &tw_dev->flags))
1932 return SCSI_MLQUEUE_HOST_BUSY;
1933
1934
1935 SCpnt->scsi_done = done;
1936
1937
1938 tw_state_request_start(tw_dev, &request_id);
1939
1940
1941 tw_dev->srb[request_id] = SCpnt;
1942
1943 switch (*command) {
1944 case READ_10:
1945 case READ_6:
1946 case WRITE_10:
1947 case WRITE_6:
1948 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n");
1949 retval = tw_scsiop_read_write(tw_dev, request_id);
1950 break;
1951 case TEST_UNIT_READY:
1952 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n");
1953 retval = tw_scsiop_test_unit_ready(tw_dev, request_id);
1954 break;
1955 case INQUIRY:
1956 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n");
1957 retval = tw_scsiop_inquiry(tw_dev, request_id);
1958 break;
1959 case READ_CAPACITY:
1960 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n");
1961 retval = tw_scsiop_read_capacity(tw_dev, request_id);
1962 break;
1963 case REQUEST_SENSE:
1964 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n");
1965 retval = tw_scsiop_request_sense(tw_dev, request_id);
1966 break;
1967 case MODE_SENSE:
1968 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n");
1969 retval = tw_scsiop_mode_sense(tw_dev, request_id);
1970 break;
1971 case SYNCHRONIZE_CACHE:
1972 dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n");
1973 retval = tw_scsiop_synchronize_cache(tw_dev, request_id);
1974 break;
1975 case TW_IOCTL:
1976 printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n");
1977 break;
1978 default:
1979 printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command);
1980 tw_dev->state[request_id] = TW_S_COMPLETED;
1981 tw_state_request_finish(tw_dev, request_id);
1982 SCpnt->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
1983 scsi_build_sense_buffer(1, SCpnt->sense_buffer, ILLEGAL_REQUEST, 0x20, 0);
1984 done(SCpnt);
1985 retval = 0;
1986 }
1987 if (retval) {
1988 tw_dev->state[request_id] = TW_S_COMPLETED;
1989 tw_state_request_finish(tw_dev, request_id);
1990 SCpnt->result = (DID_ERROR << 16);
1991 done(SCpnt);
1992 retval = 0;
1993 }
1994 return retval;
1995}
1996
1997static DEF_SCSI_QCMD(tw_scsi_queue)
1998
1999
2000static irqreturn_t tw_interrupt(int irq, void *dev_instance)
2001{
2002 int request_id;
2003 u32 status_reg_value;
2004 TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
2005 TW_Response_Queue response_que;
2006 int error = 0, retval = 0;
2007 TW_Command *command_packet;
2008 int handled = 0;
2009
2010
2011 spin_lock(tw_dev->host->host_lock);
2012
2013
2014 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
2015
2016
2017 if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
2018 goto tw_interrupt_bail;
2019
2020 handled = 1;
2021
2022
2023 if (test_bit(TW_IN_RESET, &tw_dev->flags))
2024 goto tw_interrupt_bail;
2025
2026
2027 if (tw_check_bits(status_reg_value)) {
2028 dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
2029 if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
2030 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
2031 goto tw_interrupt_bail;
2032 }
2033 }
2034
2035
2036 if (status_reg_value & TW_STATUS_HOST_INTERRUPT) {
2037 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n");
2038 TW_CLEAR_HOST_INTERRUPT(tw_dev);
2039 }
2040
2041
2042 if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
2043 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
2044 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
2045 tw_state_request_start(tw_dev, &request_id);
2046 error = tw_aen_read_queue(tw_dev, request_id);
2047 if (error) {
2048 printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no);
2049 tw_dev->state[request_id] = TW_S_COMPLETED;
2050 tw_state_request_finish(tw_dev, request_id);
2051 }
2052 }
2053
2054
2055 if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
2056
2057 while (tw_dev->pending_request_count > 0) {
2058 request_id = tw_dev->pending_queue[tw_dev->pending_head];
2059 if (tw_dev->state[request_id] != TW_S_PENDING) {
2060 printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no);
2061 break;
2062 }
2063 if (tw_post_command_packet(tw_dev, request_id)==0) {
2064 if (tw_dev->pending_head == TW_Q_LENGTH-1) {
2065 tw_dev->pending_head = TW_Q_START;
2066 } else {
2067 tw_dev->pending_head = tw_dev->pending_head + 1;
2068 }
2069 tw_dev->pending_request_count--;
2070 } else {
2071
2072 break;
2073 }
2074 }
2075
2076 if (tw_dev->pending_request_count == 0)
2077 TW_MASK_COMMAND_INTERRUPT(tw_dev);
2078 }
2079
2080
2081 if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) {
2082
2083 while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
2084
2085 response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
2086 request_id = TW_RESID_OUT(response_que.response_id);
2087 command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id];
2088 error = 0;
2089
2090
2091 if (command_packet->status != 0) {
2092
2093 if (tw_dev->srb[request_id] == NULL) {
2094 tw_decode_sense(tw_dev, request_id, 0);
2095 } else {
2096 error = tw_decode_sense(tw_dev, request_id, 1);
2097 }
2098 }
2099
2100
2101 if (tw_dev->state[request_id] != TW_S_POSTED) {
2102 if (tw_dev->srb[request_id] != NULL) {
2103 printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no);
2104 error = 1;
2105 }
2106 }
2107
2108 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id);
2109
2110
2111 if (tw_dev->srb[request_id] == NULL) {
2112 dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n");
2113
2114 if (request_id != tw_dev->chrdev_request_id) {
2115 retval = tw_aen_complete(tw_dev, request_id);
2116 if (retval) {
2117 printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no);
2118 }
2119 } else {
2120 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
2121 wake_up(&tw_dev->ioctl_wqueue);
2122 }
2123 } else {
2124 switch (tw_dev->srb[request_id]->cmnd[0]) {
2125 case READ_10:
2126 case READ_6:
2127 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
2128 break;
2129 case WRITE_10:
2130 case WRITE_6:
2131 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
2132 break;
2133 case TEST_UNIT_READY:
2134 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
2135 error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id);
2136 break;
2137 case INQUIRY:
2138 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n");
2139 error = tw_scsiop_inquiry_complete(tw_dev, request_id);
2140 break;
2141 case READ_CAPACITY:
2142 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
2143 error = tw_scsiop_read_capacity_complete(tw_dev, request_id);
2144 break;
2145 case MODE_SENSE:
2146 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
2147 error = tw_scsiop_mode_sense_complete(tw_dev, request_id);
2148 break;
2149 case SYNCHRONIZE_CACHE:
2150 dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
2151 break;
2152 default:
2153 printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n");
2154 error = 1;
2155 }
2156
2157
2158 if (error == 0) {
2159 tw_dev->srb[request_id]->result = (DID_OK << 16);
2160 }
2161
2162
2163 if (error == 1) {
2164
2165 tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
2166 }
2167
2168
2169 if ((error != TW_ISR_DONT_COMPLETE)) {
2170 scsi_dma_unmap(tw_dev->srb[request_id]);
2171 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
2172 tw_dev->state[request_id] = TW_S_COMPLETED;
2173 tw_state_request_finish(tw_dev, request_id);
2174 tw_dev->posted_request_count--;
2175 }
2176 }
2177
2178
2179 status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev));
2180 if (tw_check_bits(status_reg_value)) {
2181 dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n");
2182 if (tw_decode_bits(tw_dev, status_reg_value, 1)) {
2183 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
2184 goto tw_interrupt_bail;
2185 }
2186 }
2187 }
2188 }
2189
2190tw_interrupt_bail:
2191 spin_unlock(tw_dev->host->host_lock);
2192 return IRQ_RETVAL(handled);
2193}
2194
2195
2196static void __tw_shutdown(TW_Device_Extension *tw_dev)
2197{
2198
2199 TW_DISABLE_INTERRUPTS(tw_dev);
2200
2201
2202 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
2203
2204 printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no);
2205
2206
2207 if (tw_initconnection(tw_dev, 1)) {
2208 printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n");
2209 } else {
2210 printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n");
2211 }
2212
2213
2214 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
2215}
2216
2217
2218static void tw_shutdown(struct pci_dev *pdev)
2219{
2220 struct Scsi_Host *host = pci_get_drvdata(pdev);
2221 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
2222
2223 __tw_shutdown(tw_dev);
2224}
2225
2226
2227static int tw_slave_configure(struct scsi_device *sdev)
2228{
2229
2230 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ);
2231
2232 return 0;
2233}
2234
2235static struct scsi_host_template driver_template = {
2236 .module = THIS_MODULE,
2237 .name = "3ware Storage Controller",
2238 .queuecommand = tw_scsi_queue,
2239 .eh_host_reset_handler = tw_scsi_eh_reset,
2240 .bios_param = tw_scsi_biosparam,
2241 .change_queue_depth = scsi_change_queue_depth,
2242 .can_queue = TW_Q_LENGTH-2,
2243 .slave_configure = tw_slave_configure,
2244 .this_id = -1,
2245 .sg_tablesize = TW_MAX_SGL_LENGTH,
2246 .max_sectors = TW_MAX_SECTORS,
2247 .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
2248 .shost_attrs = tw_host_attrs,
2249 .emulated = 1,
2250 .no_write_same = 1,
2251};
2252
2253
2254static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
2255{
2256 struct Scsi_Host *host = NULL;
2257 TW_Device_Extension *tw_dev;
2258 int retval = -ENODEV;
2259
2260 retval = pci_enable_device(pdev);
2261 if (retval) {
2262 printk(KERN_WARNING "3w-xxxx: Failed to enable pci device.");
2263 goto out_disable_device;
2264 }
2265
2266 pci_set_master(pdev);
2267
2268 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
2269 if (retval) {
2270 printk(KERN_WARNING "3w-xxxx: Failed to set dma mask.");
2271 goto out_disable_device;
2272 }
2273
2274 host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
2275 if (!host) {
2276 printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension.");
2277 retval = -ENOMEM;
2278 goto out_disable_device;
2279 }
2280 tw_dev = (TW_Device_Extension *)host->hostdata;
2281
2282
2283 tw_dev->host = host;
2284 tw_dev->tw_pci_dev = pdev;
2285
2286 if (tw_initialize_device_extension(tw_dev)) {
2287 printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension.");
2288 retval = -ENOMEM;
2289 goto out_free_device_extension;
2290 }
2291
2292
2293 retval = pci_request_regions(pdev, "3w-xxxx");
2294 if (retval) {
2295 printk(KERN_WARNING "3w-xxxx: Failed to get mem region.");
2296 goto out_free_device_extension;
2297 }
2298
2299
2300 tw_dev->base_addr = pci_resource_start(pdev, 0);
2301 if (!tw_dev->base_addr) {
2302 printk(KERN_WARNING "3w-xxxx: Failed to get io address.");
2303 retval = -ENOMEM;
2304 goto out_release_mem_region;
2305 }
2306
2307
2308 TW_DISABLE_INTERRUPTS(tw_dev);
2309
2310
2311 if (tw_reset_sequence(tw_dev))
2312 goto out_release_mem_region;
2313
2314
2315 host->max_id = TW_MAX_UNITS;
2316 host->max_cmd_len = TW_MAX_CDB_LEN;
2317
2318
2319 host->max_lun = 0;
2320 host->max_channel = 0;
2321
2322
2323 retval = scsi_add_host(host, &pdev->dev);
2324 if (retval) {
2325 printk(KERN_WARNING "3w-xxxx: scsi add host failed");
2326 goto out_release_mem_region;
2327 }
2328
2329 pci_set_drvdata(pdev, host);
2330
2331 printk(KERN_WARNING "3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n", host->host_no, tw_dev->base_addr, pdev->irq);
2332
2333
2334 retval = request_irq(pdev->irq, tw_interrupt, IRQF_SHARED, "3w-xxxx", tw_dev);
2335 if (retval) {
2336 printk(KERN_WARNING "3w-xxxx: Error requesting IRQ.");
2337 goto out_remove_host;
2338 }
2339
2340 tw_device_extension_list[tw_device_extension_count] = tw_dev;
2341 tw_device_extension_count++;
2342
2343
2344 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
2345
2346
2347 scsi_scan_host(host);
2348
2349 if (twe_major == -1) {
2350 if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0)
2351 printk(KERN_WARNING "3w-xxxx: Failed to register character device.");
2352 }
2353 return 0;
2354
2355out_remove_host:
2356 scsi_remove_host(host);
2357out_release_mem_region:
2358 pci_release_regions(pdev);
2359out_free_device_extension:
2360 tw_free_device_extension(tw_dev);
2361 scsi_host_put(host);
2362out_disable_device:
2363 pci_disable_device(pdev);
2364
2365 return retval;
2366}
2367
2368
2369static void tw_remove(struct pci_dev *pdev)
2370{
2371 struct Scsi_Host *host = pci_get_drvdata(pdev);
2372 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
2373
2374 scsi_remove_host(tw_dev->host);
2375
2376
2377 if (twe_major >= 0) {
2378 unregister_chrdev(twe_major, "twe");
2379 twe_major = -1;
2380 }
2381
2382
2383 __tw_shutdown(tw_dev);
2384
2385
2386 pci_release_regions(pdev);
2387
2388
2389 tw_free_device_extension(tw_dev);
2390
2391 scsi_host_put(tw_dev->host);
2392 pci_disable_device(pdev);
2393 tw_device_extension_count--;
2394}
2395
2396
2397static struct pci_device_id tw_pci_tbl[] = {
2398 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000,
2399 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2400 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000,
2401 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2402 { }
2403};
2404MODULE_DEVICE_TABLE(pci, tw_pci_tbl);
2405
2406
2407static struct pci_driver tw_driver = {
2408 .name = "3w-xxxx",
2409 .id_table = tw_pci_tbl,
2410 .probe = tw_probe,
2411 .remove = tw_remove,
2412 .shutdown = tw_shutdown,
2413};
2414
2415
2416static int __init tw_init(void)
2417{
2418 printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
2419
2420 return pci_register_driver(&tw_driver);
2421}
2422
2423
2424static void __exit tw_exit(void)
2425{
2426 pci_unregister_driver(&tw_driver);
2427}
2428
2429module_init(tw_init);
2430module_exit(tw_exit);
2431
2432