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24
25#include <linux/fs.h>
26#include <linux/init.h>
27#include <linux/types.h>
28#include <linux/errno.h>
29#include <linux/kernel.h>
30#include <linux/ioport.h>
31#include <linux/delay.h>
32#include <linux/pci.h>
33#include <linux/wait.h>
34#include <linux/spinlock.h>
35#include <linux/sched.h>
36#include <linux/interrupt.h>
37#include <linux/blkdev.h>
38#include <linux/firmware.h>
39#include <linux/module.h>
40#include <linux/moduleparam.h>
41#include <linux/hdreg.h>
42#include <linux/io.h>
43#include <linux/slab.h>
44#include <asm/irq.h>
45#include <asm/processor.h>
46#include <linux/libata.h>
47#include <linux/mutex.h>
48#include <scsi/scsi.h>
49#include <scsi/scsi_host.h>
50#include <scsi/scsi_device.h>
51#include <scsi/scsi_tcq.h>
52#include <scsi/scsi_eh.h>
53#include <scsi/scsi_cmnd.h>
54#include <scsi/scsicam.h>
55
56#include "pmcraid.h"
57
58
59
60
61static unsigned int pmcraid_debug_log;
62static unsigned int pmcraid_disable_aen;
63static unsigned int pmcraid_log_level = IOASC_LOG_LEVEL_MUST;
64static unsigned int pmcraid_enable_msix;
65
66
67
68
69
70static atomic_t pmcraid_adapter_count = ATOMIC_INIT(0);
71
72
73
74
75
76
77static unsigned int pmcraid_major;
78static struct class *pmcraid_class;
79DECLARE_BITMAP(pmcraid_minor, PMCRAID_MAX_ADAPTERS);
80
81
82
83
84MODULE_AUTHOR("Anil Ravindranath<anil_ravindranath@pmc-sierra.com>");
85MODULE_DESCRIPTION("PMC Sierra MaxRAID Controller Driver");
86MODULE_LICENSE("GPL");
87MODULE_VERSION(PMCRAID_DRIVER_VERSION);
88
89module_param_named(log_level, pmcraid_log_level, uint, (S_IRUGO | S_IWUSR));
90MODULE_PARM_DESC(log_level,
91 "Enables firmware error code logging, default :1 high-severity"
92 " errors, 2: all errors including high-severity errors,"
93 " 0: disables logging");
94
95module_param_named(debug, pmcraid_debug_log, uint, (S_IRUGO | S_IWUSR));
96MODULE_PARM_DESC(debug,
97 "Enable driver verbose message logging. Set 1 to enable."
98 "(default: 0)");
99
100module_param_named(disable_aen, pmcraid_disable_aen, uint, (S_IRUGO | S_IWUSR));
101MODULE_PARM_DESC(disable_aen,
102 "Disable driver aen notifications to apps. Set 1 to disable."
103 "(default: 0)");
104
105
106
107
108static struct pmcraid_chip_details pmcraid_chip_cfg[] = {
109 {
110 .ioastatus = 0x0,
111 .ioarrin = 0x00040,
112 .mailbox = 0x7FC30,
113 .global_intr_mask = 0x00034,
114 .ioa_host_intr = 0x0009C,
115 .ioa_host_intr_clr = 0x000A0,
116 .ioa_host_msix_intr = 0x7FC40,
117 .ioa_host_mask = 0x7FC28,
118 .ioa_host_mask_clr = 0x7FC28,
119 .host_ioa_intr = 0x00020,
120 .host_ioa_intr_clr = 0x00020,
121 .transop_timeout = 300
122 }
123};
124
125
126
127
128static struct pci_device_id pmcraid_pci_table[] __devinitdata = {
129 { PCI_DEVICE(PCI_VENDOR_ID_PMC, PCI_DEVICE_ID_PMC_MAXRAID),
130 0, 0, (kernel_ulong_t)&pmcraid_chip_cfg[0]
131 },
132 {}
133};
134
135MODULE_DEVICE_TABLE(pci, pmcraid_pci_table);
136
137
138
139
140
141
142
143
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145
146
147
148
149
150
151static int pmcraid_slave_alloc(struct scsi_device *scsi_dev)
152{
153 struct pmcraid_resource_entry *temp, *res = NULL;
154 struct pmcraid_instance *pinstance;
155 u8 target, bus, lun;
156 unsigned long lock_flags;
157 int rc = -ENXIO;
158 u16 fw_version;
159
160 pinstance = shost_priv(scsi_dev->host);
161
162 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
163
164
165
166
167
168
169 spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
170 list_for_each_entry(temp, &pinstance->used_res_q, queue) {
171
172
173 if (RES_IS_VSET(temp->cfg_entry)) {
174 if (fw_version <= PMCRAID_FW_VERSION_1)
175 target = temp->cfg_entry.unique_flags1;
176 else
177 target = temp->cfg_entry.array_id & 0xFF;
178
179 if (target > PMCRAID_MAX_VSET_TARGETS)
180 continue;
181 bus = PMCRAID_VSET_BUS_ID;
182 lun = 0;
183 } else if (RES_IS_GSCSI(temp->cfg_entry)) {
184 target = RES_TARGET(temp->cfg_entry.resource_address);
185 bus = PMCRAID_PHYS_BUS_ID;
186 lun = RES_LUN(temp->cfg_entry.resource_address);
187 } else {
188 continue;
189 }
190
191 if (bus == scsi_dev->channel &&
192 target == scsi_dev->id &&
193 lun == scsi_dev->lun) {
194 res = temp;
195 break;
196 }
197 }
198
199 if (res) {
200 res->scsi_dev = scsi_dev;
201 scsi_dev->hostdata = res;
202 res->change_detected = 0;
203 atomic_set(&res->read_failures, 0);
204 atomic_set(&res->write_failures, 0);
205 rc = 0;
206 }
207 spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
208 return rc;
209}
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224static int pmcraid_slave_configure(struct scsi_device *scsi_dev)
225{
226 struct pmcraid_resource_entry *res = scsi_dev->hostdata;
227
228 if (!res)
229 return 0;
230
231
232 if (RES_IS_GSCSI(res->cfg_entry) &&
233 scsi_dev->type != TYPE_ENCLOSURE)
234 return -ENXIO;
235
236 pmcraid_info("configuring %x:%x:%x:%x\n",
237 scsi_dev->host->unique_id,
238 scsi_dev->channel,
239 scsi_dev->id,
240 scsi_dev->lun);
241
242 if (RES_IS_GSCSI(res->cfg_entry)) {
243 scsi_dev->allow_restart = 1;
244 } else if (RES_IS_VSET(res->cfg_entry)) {
245 scsi_dev->allow_restart = 1;
246 blk_queue_rq_timeout(scsi_dev->request_queue,
247 PMCRAID_VSET_IO_TIMEOUT);
248 blk_queue_max_hw_sectors(scsi_dev->request_queue,
249 PMCRAID_VSET_MAX_SECTORS);
250 }
251
252 if (scsi_dev->tagged_supported &&
253 (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry))) {
254 scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth);
255 scsi_adjust_queue_depth(scsi_dev, MSG_SIMPLE_TAG,
256 scsi_dev->host->cmd_per_lun);
257 } else {
258 scsi_adjust_queue_depth(scsi_dev, 0,
259 scsi_dev->host->cmd_per_lun);
260 }
261
262 return 0;
263}
264
265
266
267
268
269
270
271
272
273
274
275
276static void pmcraid_slave_destroy(struct scsi_device *scsi_dev)
277{
278 struct pmcraid_resource_entry *res;
279
280 res = (struct pmcraid_resource_entry *)scsi_dev->hostdata;
281
282 if (res)
283 res->scsi_dev = NULL;
284
285 scsi_dev->hostdata = NULL;
286}
287
288
289
290
291
292
293
294
295
296
297static int pmcraid_change_queue_depth(struct scsi_device *scsi_dev, int depth,
298 int reason)
299{
300 if (reason != SCSI_QDEPTH_DEFAULT)
301 return -EOPNOTSUPP;
302
303 if (depth > PMCRAID_MAX_CMD_PER_LUN)
304 depth = PMCRAID_MAX_CMD_PER_LUN;
305
306 scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), depth);
307
308 return scsi_dev->queue_depth;
309}
310
311
312
313
314
315
316
317
318
319static int pmcraid_change_queue_type(struct scsi_device *scsi_dev, int tag)
320{
321 struct pmcraid_resource_entry *res;
322
323 res = (struct pmcraid_resource_entry *)scsi_dev->hostdata;
324
325 if ((res) && scsi_dev->tagged_supported &&
326 (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry))) {
327 scsi_set_tag_type(scsi_dev, tag);
328
329 if (tag)
330 scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth);
331 else
332 scsi_deactivate_tcq(scsi_dev, scsi_dev->queue_depth);
333 } else
334 tag = 0;
335
336 return tag;
337}
338
339
340
341
342
343
344
345
346
347
348
349void pmcraid_init_cmdblk(struct pmcraid_cmd *cmd, int index)
350{
351 struct pmcraid_ioarcb *ioarcb = &(cmd->ioa_cb->ioarcb);
352 dma_addr_t dma_addr = cmd->ioa_cb_bus_addr;
353
354 if (index >= 0) {
355
356 u32 ioasa_offset =
357 offsetof(struct pmcraid_control_block, ioasa);
358
359 cmd->index = index;
360 ioarcb->response_handle = cpu_to_le32(index << 2);
361 ioarcb->ioarcb_bus_addr = cpu_to_le64(dma_addr);
362 ioarcb->ioasa_bus_addr = cpu_to_le64(dma_addr + ioasa_offset);
363 ioarcb->ioasa_len = cpu_to_le16(sizeof(struct pmcraid_ioasa));
364 } else {
365
366
367
368 memset(&cmd->ioa_cb->ioarcb.cdb, 0, PMCRAID_MAX_CDB_LEN);
369 ioarcb->hrrq_id = 0;
370 ioarcb->request_flags0 = 0;
371 ioarcb->request_flags1 = 0;
372 ioarcb->cmd_timeout = 0;
373 ioarcb->ioarcb_bus_addr &= (~0x1FULL);
374 ioarcb->ioadl_bus_addr = 0;
375 ioarcb->ioadl_length = 0;
376 ioarcb->data_transfer_length = 0;
377 ioarcb->add_cmd_param_length = 0;
378 ioarcb->add_cmd_param_offset = 0;
379 cmd->ioa_cb->ioasa.ioasc = 0;
380 cmd->ioa_cb->ioasa.residual_data_length = 0;
381 cmd->time_left = 0;
382 }
383
384 cmd->cmd_done = NULL;
385 cmd->scsi_cmd = NULL;
386 cmd->release = 0;
387 cmd->completion_req = 0;
388 cmd->sense_buffer = 0;
389 cmd->sense_buffer_dma = 0;
390 cmd->dma_handle = 0;
391 init_timer(&cmd->timer);
392}
393
394
395
396
397
398
399
400
401
402static void pmcraid_reinit_cmdblk(struct pmcraid_cmd *cmd)
403{
404 pmcraid_init_cmdblk(cmd, -1);
405}
406
407
408
409
410
411
412
413
414static struct pmcraid_cmd *pmcraid_get_free_cmd(
415 struct pmcraid_instance *pinstance
416)
417{
418 struct pmcraid_cmd *cmd = NULL;
419 unsigned long lock_flags;
420
421
422 spin_lock_irqsave(&pinstance->free_pool_lock, lock_flags);
423
424 if (!list_empty(&pinstance->free_cmd_pool)) {
425 cmd = list_entry(pinstance->free_cmd_pool.next,
426 struct pmcraid_cmd, free_list);
427 list_del(&cmd->free_list);
428 }
429 spin_unlock_irqrestore(&pinstance->free_pool_lock, lock_flags);
430
431
432 if (cmd != NULL)
433 pmcraid_reinit_cmdblk(cmd);
434 return cmd;
435}
436
437
438
439
440
441
442
443
444void pmcraid_return_cmd(struct pmcraid_cmd *cmd)
445{
446 struct pmcraid_instance *pinstance = cmd->drv_inst;
447 unsigned long lock_flags;
448
449 spin_lock_irqsave(&pinstance->free_pool_lock, lock_flags);
450 list_add_tail(&cmd->free_list, &pinstance->free_cmd_pool);
451 spin_unlock_irqrestore(&pinstance->free_pool_lock, lock_flags);
452}
453
454
455
456
457
458
459
460
461
462static u32 pmcraid_read_interrupts(struct pmcraid_instance *pinstance)
463{
464 return (pinstance->interrupt_mode) ?
465 ioread32(pinstance->int_regs.ioa_host_msix_interrupt_reg) :
466 ioread32(pinstance->int_regs.ioa_host_interrupt_reg);
467}
468
469
470
471
472
473
474
475
476
477
478static void pmcraid_disable_interrupts(
479 struct pmcraid_instance *pinstance,
480 u32 intrs
481)
482{
483 u32 gmask = ioread32(pinstance->int_regs.global_interrupt_mask_reg);
484 u32 nmask = gmask | GLOBAL_INTERRUPT_MASK;
485
486 iowrite32(intrs, pinstance->int_regs.ioa_host_interrupt_clr_reg);
487 iowrite32(nmask, pinstance->int_regs.global_interrupt_mask_reg);
488 ioread32(pinstance->int_regs.global_interrupt_mask_reg);
489
490 if (!pinstance->interrupt_mode) {
491 iowrite32(intrs,
492 pinstance->int_regs.ioa_host_interrupt_mask_reg);
493 ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg);
494 }
495}
496
497
498
499
500
501
502
503
504
505
506static void pmcraid_enable_interrupts(
507 struct pmcraid_instance *pinstance,
508 u32 intrs
509)
510{
511 u32 gmask = ioread32(pinstance->int_regs.global_interrupt_mask_reg);
512 u32 nmask = gmask & (~GLOBAL_INTERRUPT_MASK);
513
514 iowrite32(nmask, pinstance->int_regs.global_interrupt_mask_reg);
515
516 if (!pinstance->interrupt_mode) {
517 iowrite32(~intrs,
518 pinstance->int_regs.ioa_host_interrupt_mask_reg);
519 ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg);
520 }
521
522 pmcraid_info("enabled interrupts global mask = %x intr_mask = %x\n",
523 ioread32(pinstance->int_regs.global_interrupt_mask_reg),
524 ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg));
525}
526
527
528
529
530
531
532
533
534
535static void pmcraid_clr_trans_op(
536 struct pmcraid_instance *pinstance
537)
538{
539 unsigned long lock_flags;
540
541 if (!pinstance->interrupt_mode) {
542 iowrite32(INTRS_TRANSITION_TO_OPERATIONAL,
543 pinstance->int_regs.ioa_host_interrupt_mask_reg);
544 ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg);
545 iowrite32(INTRS_TRANSITION_TO_OPERATIONAL,
546 pinstance->int_regs.ioa_host_interrupt_clr_reg);
547 ioread32(pinstance->int_regs.ioa_host_interrupt_clr_reg);
548 }
549
550 if (pinstance->reset_cmd != NULL) {
551 del_timer(&pinstance->reset_cmd->timer);
552 spin_lock_irqsave(
553 pinstance->host->host_lock, lock_flags);
554 pinstance->reset_cmd->cmd_done(pinstance->reset_cmd);
555 spin_unlock_irqrestore(
556 pinstance->host->host_lock, lock_flags);
557 }
558}
559
560
561
562
563
564
565
566
567
568
569static void pmcraid_reset_type(struct pmcraid_instance *pinstance)
570{
571 u32 mask;
572 u32 intrs;
573 u32 alerts;
574
575 mask = ioread32(pinstance->int_regs.ioa_host_interrupt_mask_reg);
576 intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg);
577 alerts = ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
578
579 if ((mask & INTRS_HRRQ_VALID) == 0 ||
580 (alerts & DOORBELL_IOA_RESET_ALERT) ||
581 (intrs & PMCRAID_ERROR_INTERRUPTS)) {
582 pmcraid_info("IOA requires hard reset\n");
583 pinstance->ioa_hard_reset = 1;
584 }
585
586
587 if (intrs & INTRS_IOA_UNIT_CHECK)
588 pinstance->ioa_unit_check = 1;
589}
590
591
592
593
594
595
596
597
598static void pmcraid_ioa_reset(struct pmcraid_cmd *);
599
600static void pmcraid_bist_done(struct pmcraid_cmd *cmd)
601{
602 struct pmcraid_instance *pinstance = cmd->drv_inst;
603 unsigned long lock_flags;
604 int rc;
605 u16 pci_reg;
606
607 rc = pci_read_config_word(pinstance->pdev, PCI_COMMAND, &pci_reg);
608
609
610 if ((rc != PCIBIOS_SUCCESSFUL || (!(pci_reg & PCI_COMMAND_MEMORY))) &&
611 cmd->time_left > 0) {
612 pmcraid_info("BIST not complete, waiting another 2 secs\n");
613 cmd->timer.expires = jiffies + cmd->time_left;
614 cmd->time_left = 0;
615 cmd->timer.data = (unsigned long)cmd;
616 cmd->timer.function =
617 (void (*)(unsigned long))pmcraid_bist_done;
618 add_timer(&cmd->timer);
619 } else {
620 cmd->time_left = 0;
621 pmcraid_info("BIST is complete, proceeding with reset\n");
622 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
623 pmcraid_ioa_reset(cmd);
624 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
625 }
626}
627
628
629
630
631
632
633
634static void pmcraid_start_bist(struct pmcraid_cmd *cmd)
635{
636 struct pmcraid_instance *pinstance = cmd->drv_inst;
637 u32 doorbells, intrs;
638
639
640 iowrite32(DOORBELL_IOA_START_BIST,
641 pinstance->int_regs.host_ioa_interrupt_reg);
642 doorbells = ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
643 intrs = ioread32(pinstance->int_regs.ioa_host_interrupt_reg);
644 pmcraid_info("doorbells after start bist: %x intrs: %x\n",
645 doorbells, intrs);
646
647 cmd->time_left = msecs_to_jiffies(PMCRAID_BIST_TIMEOUT);
648 cmd->timer.data = (unsigned long)cmd;
649 cmd->timer.expires = jiffies + msecs_to_jiffies(PMCRAID_BIST_TIMEOUT);
650 cmd->timer.function = (void (*)(unsigned long))pmcraid_bist_done;
651 add_timer(&cmd->timer);
652}
653
654
655
656
657
658
659
660static void pmcraid_reset_alert_done(struct pmcraid_cmd *cmd)
661{
662 struct pmcraid_instance *pinstance = cmd->drv_inst;
663 u32 status = ioread32(pinstance->ioa_status);
664 unsigned long lock_flags;
665
666
667
668
669
670 if (((status & INTRS_CRITICAL_OP_IN_PROGRESS) == 0) ||
671 cmd->time_left <= 0) {
672 pmcraid_info("critical op is reset proceeding with reset\n");
673 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
674 pmcraid_ioa_reset(cmd);
675 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
676 } else {
677 pmcraid_info("critical op is not yet reset waiting again\n");
678
679 cmd->time_left -= PMCRAID_CHECK_FOR_RESET_TIMEOUT;
680 cmd->timer.data = (unsigned long)cmd;
681 cmd->timer.expires = jiffies + PMCRAID_CHECK_FOR_RESET_TIMEOUT;
682 cmd->timer.function =
683 (void (*)(unsigned long))pmcraid_reset_alert_done;
684 add_timer(&cmd->timer);
685 }
686}
687
688
689
690
691
692
693
694
695
696
697static void pmcraid_notify_ioastate(struct pmcraid_instance *, u32);
698static void pmcraid_reset_alert(struct pmcraid_cmd *cmd)
699{
700 struct pmcraid_instance *pinstance = cmd->drv_inst;
701 u32 doorbells;
702 int rc;
703 u16 pci_reg;
704
705
706
707
708
709
710 rc = pci_read_config_word(pinstance->pdev, PCI_COMMAND, &pci_reg);
711 if ((rc == PCIBIOS_SUCCESSFUL) && (pci_reg & PCI_COMMAND_MEMORY)) {
712
713
714
715
716
717
718 cmd->time_left = PMCRAID_RESET_TIMEOUT;
719 cmd->timer.data = (unsigned long)cmd;
720 cmd->timer.expires = jiffies + PMCRAID_CHECK_FOR_RESET_TIMEOUT;
721 cmd->timer.function =
722 (void (*)(unsigned long))pmcraid_reset_alert_done;
723 add_timer(&cmd->timer);
724
725 iowrite32(DOORBELL_IOA_RESET_ALERT,
726 pinstance->int_regs.host_ioa_interrupt_reg);
727 doorbells =
728 ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
729 pmcraid_info("doorbells after reset alert: %x\n", doorbells);
730 } else {
731 pmcraid_info("PCI config is not accessible starting BIST\n");
732 pinstance->ioa_state = IOA_STATE_IN_HARD_RESET;
733 pmcraid_start_bist(cmd);
734 }
735}
736
737
738
739
740
741
742
743
744
745
746
747static void pmcraid_timeout_handler(struct pmcraid_cmd *cmd)
748{
749 struct pmcraid_instance *pinstance = cmd->drv_inst;
750 unsigned long lock_flags;
751
752 dev_info(&pinstance->pdev->dev,
753 "Adapter being reset due to cmd(CDB[0] = %x) timeout\n",
754 cmd->ioa_cb->ioarcb.cdb[0]);
755
756
757
758
759
760
761
762 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
763 if (!pinstance->ioa_reset_in_progress) {
764 pinstance->ioa_reset_attempts = 0;
765 cmd = pmcraid_get_free_cmd(pinstance);
766
767
768
769
770 if (cmd == NULL) {
771 spin_unlock_irqrestore(pinstance->host->host_lock,
772 lock_flags);
773 pmcraid_err("no free cmnd block for timeout handler\n");
774 return;
775 }
776
777 pinstance->reset_cmd = cmd;
778 pinstance->ioa_reset_in_progress = 1;
779 } else {
780 pmcraid_info("reset is already in progress\n");
781
782 if (pinstance->reset_cmd != cmd) {
783
784
785
786
787 pmcraid_err("cmd is pending but reset in progress\n");
788 }
789
790
791
792
793
794
795 if (cmd == pinstance->reset_cmd)
796 cmd->cmd_done = pmcraid_ioa_reset;
797 }
798
799
800 if (pinstance->scn.ioa_state != PMC_DEVICE_EVENT_RESET_START &&
801 pinstance->scn.ioa_state != PMC_DEVICE_EVENT_SHUTDOWN_START)
802 pmcraid_notify_ioastate(pinstance,
803 PMC_DEVICE_EVENT_RESET_START);
804
805 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
806 scsi_block_requests(pinstance->host);
807 pmcraid_reset_alert(cmd);
808 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
809}
810
811
812
813
814
815
816
817
818
819static void pmcraid_internal_done(struct pmcraid_cmd *cmd)
820{
821 pmcraid_info("response internal cmd CDB[0] = %x ioasc = %x\n",
822 cmd->ioa_cb->ioarcb.cdb[0],
823 le32_to_cpu(cmd->ioa_cb->ioasa.ioasc));
824
825
826
827
828
829
830 if (cmd->completion_req) {
831 cmd->completion_req = 0;
832 complete(&cmd->wait_for_completion);
833 }
834
835
836
837
838
839 if (cmd->release) {
840 cmd->release = 0;
841 pmcraid_return_cmd(cmd);
842 }
843}
844
845
846
847
848
849
850
851
852
853
854
855
856
857static void pmcraid_reinit_cfgtable_done(struct pmcraid_cmd *cmd)
858{
859 pmcraid_info("response internal cmd CDB[0] = %x ioasc = %x\n",
860 cmd->ioa_cb->ioarcb.cdb[0],
861 le32_to_cpu(cmd->ioa_cb->ioasa.ioasc));
862
863 if (cmd->release) {
864 cmd->release = 0;
865 pmcraid_return_cmd(cmd);
866 }
867 pmcraid_info("scheduling worker for config table reinitialization\n");
868 schedule_work(&cmd->drv_inst->worker_q);
869}
870
871
872
873
874
875
876
877
878
879
880
881static void pmcraid_erp_done(struct pmcraid_cmd *cmd)
882{
883 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
884 struct pmcraid_instance *pinstance = cmd->drv_inst;
885 u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
886
887 if (PMCRAID_IOASC_SENSE_KEY(ioasc) > 0) {
888 scsi_cmd->result |= (DID_ERROR << 16);
889 scmd_printk(KERN_INFO, scsi_cmd,
890 "command CDB[0] = %x failed with IOASC: 0x%08X\n",
891 cmd->ioa_cb->ioarcb.cdb[0], ioasc);
892 }
893
894
895
896
897 if (cmd->sense_buffer != NULL) {
898 memcpy(scsi_cmd->sense_buffer,
899 cmd->sense_buffer,
900 SCSI_SENSE_BUFFERSIZE);
901 pci_free_consistent(pinstance->pdev,
902 SCSI_SENSE_BUFFERSIZE,
903 cmd->sense_buffer, cmd->sense_buffer_dma);
904 cmd->sense_buffer = NULL;
905 cmd->sense_buffer_dma = 0;
906 }
907
908 scsi_dma_unmap(scsi_cmd);
909 pmcraid_return_cmd(cmd);
910 scsi_cmd->scsi_done(scsi_cmd);
911}
912
913
914
915
916
917
918
919
920
921
922
923
924static void _pmcraid_fire_command(struct pmcraid_cmd *cmd)
925{
926 struct pmcraid_instance *pinstance = cmd->drv_inst;
927 unsigned long lock_flags;
928
929
930
931
932
933
934 spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags);
935 list_add_tail(&cmd->free_list, &pinstance->pending_cmd_pool);
936 spin_unlock_irqrestore(&pinstance->pending_pool_lock, lock_flags);
937 atomic_inc(&pinstance->outstanding_cmds);
938
939
940 mb();
941 iowrite32(le32_to_cpu(cmd->ioa_cb->ioarcb.ioarcb_bus_addr),
942 pinstance->ioarrin);
943}
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959static void pmcraid_send_cmd(
960 struct pmcraid_cmd *cmd,
961 void (*cmd_done) (struct pmcraid_cmd *),
962 unsigned long timeout,
963 void (*timeout_func) (struct pmcraid_cmd *)
964)
965{
966
967 cmd->cmd_done = cmd_done;
968
969 if (timeout_func) {
970
971 cmd->timer.data = (unsigned long)cmd;
972 cmd->timer.expires = jiffies + timeout;
973 cmd->timer.function = (void (*)(unsigned long))timeout_func;
974 add_timer(&cmd->timer);
975 }
976
977
978 _pmcraid_fire_command(cmd);
979}
980
981
982
983
984
985
986
987
988static void pmcraid_ioa_shutdown_done(struct pmcraid_cmd *cmd)
989{
990 struct pmcraid_instance *pinstance = cmd->drv_inst;
991 unsigned long lock_flags;
992
993 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
994 pmcraid_ioa_reset(cmd);
995 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
996}
997
998
999
1000
1001
1002
1003
1004
1005
1006static void pmcraid_ioa_shutdown(struct pmcraid_cmd *cmd)
1007{
1008 pmcraid_info("response for Cancel CCN CDB[0] = %x ioasc = %x\n",
1009 cmd->ioa_cb->ioarcb.cdb[0],
1010 le32_to_cpu(cmd->ioa_cb->ioasa.ioasc));
1011
1012
1013
1014
1015 pmcraid_reinit_cmdblk(cmd);
1016 cmd->ioa_cb->ioarcb.request_type = REQ_TYPE_IOACMD;
1017 cmd->ioa_cb->ioarcb.resource_handle =
1018 cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
1019 cmd->ioa_cb->ioarcb.cdb[0] = PMCRAID_IOA_SHUTDOWN;
1020 cmd->ioa_cb->ioarcb.cdb[1] = PMCRAID_SHUTDOWN_NORMAL;
1021
1022
1023 pmcraid_info("firing normal shutdown command (%d) to IOA\n",
1024 le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle));
1025
1026 pmcraid_notify_ioastate(cmd->drv_inst, PMC_DEVICE_EVENT_SHUTDOWN_START);
1027
1028 pmcraid_send_cmd(cmd, pmcraid_ioa_shutdown_done,
1029 PMCRAID_SHUTDOWN_TIMEOUT,
1030 pmcraid_timeout_handler);
1031}
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041static void pmcraid_querycfg(struct pmcraid_cmd *);
1042
1043static void pmcraid_get_fwversion_done(struct pmcraid_cmd *cmd)
1044{
1045 struct pmcraid_instance *pinstance = cmd->drv_inst;
1046 u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
1047 unsigned long lock_flags;
1048
1049
1050
1051
1052
1053 if (ioasc) {
1054 pmcraid_err("IOA Inquiry failed with %x\n", ioasc);
1055 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
1056 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
1057 pmcraid_reset_alert(cmd);
1058 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
1059 } else {
1060 pmcraid_querycfg(cmd);
1061 }
1062}
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072static void pmcraid_get_fwversion(struct pmcraid_cmd *cmd)
1073{
1074 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
1075 struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl;
1076 struct pmcraid_instance *pinstance = cmd->drv_inst;
1077 u16 data_size = sizeof(struct pmcraid_inquiry_data);
1078
1079 pmcraid_reinit_cmdblk(cmd);
1080 ioarcb->request_type = REQ_TYPE_SCSI;
1081 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
1082 ioarcb->cdb[0] = INQUIRY;
1083 ioarcb->cdb[1] = 1;
1084 ioarcb->cdb[2] = 0xD0;
1085 ioarcb->cdb[3] = (data_size >> 8) & 0xFF;
1086 ioarcb->cdb[4] = data_size & 0xFF;
1087
1088
1089
1090 ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) +
1091 offsetof(struct pmcraid_ioarcb,
1092 add_data.u.ioadl[0]));
1093 ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc));
1094 ioarcb->ioarcb_bus_addr &= ~(0x1FULL);
1095
1096 ioarcb->request_flags0 |= NO_LINK_DESCS;
1097 ioarcb->data_transfer_length = cpu_to_le32(data_size);
1098 ioadl = &(ioarcb->add_data.u.ioadl[0]);
1099 ioadl->flags = IOADL_FLAGS_LAST_DESC;
1100 ioadl->address = cpu_to_le64(pinstance->inq_data_baddr);
1101 ioadl->data_len = cpu_to_le32(data_size);
1102
1103 pmcraid_send_cmd(cmd, pmcraid_get_fwversion_done,
1104 PMCRAID_INTERNAL_TIMEOUT, pmcraid_timeout_handler);
1105}
1106
1107
1108
1109
1110
1111
1112
1113
1114static void pmcraid_identify_hrrq(struct pmcraid_cmd *cmd)
1115{
1116 struct pmcraid_instance *pinstance = cmd->drv_inst;
1117 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
1118 int index = cmd->hrrq_index;
1119 __be64 hrrq_addr = cpu_to_be64(pinstance->hrrq_start_bus_addr[index]);
1120 u32 hrrq_size = cpu_to_be32(sizeof(u32) * PMCRAID_MAX_CMD);
1121 void (*done_function)(struct pmcraid_cmd *);
1122
1123 pmcraid_reinit_cmdblk(cmd);
1124 cmd->hrrq_index = index + 1;
1125
1126 if (cmd->hrrq_index < pinstance->num_hrrq) {
1127 done_function = pmcraid_identify_hrrq;
1128 } else {
1129 cmd->hrrq_index = 0;
1130 done_function = pmcraid_get_fwversion;
1131 }
1132
1133
1134 ioarcb->request_type = REQ_TYPE_IOACMD;
1135 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
1136
1137
1138 ioarcb->hrrq_id = index;
1139 ioarcb->cdb[0] = PMCRAID_IDENTIFY_HRRQ;
1140 ioarcb->cdb[1] = index;
1141
1142
1143
1144
1145 pmcraid_info("HRRQ_IDENTIFY with hrrq:ioarcb:index => %llx:%llx:%x\n",
1146 hrrq_addr, ioarcb->ioarcb_bus_addr, index);
1147
1148 memcpy(&(ioarcb->cdb[2]), &hrrq_addr, sizeof(hrrq_addr));
1149 memcpy(&(ioarcb->cdb[10]), &hrrq_size, sizeof(hrrq_size));
1150
1151
1152
1153
1154
1155 pmcraid_send_cmd(cmd, done_function,
1156 PMCRAID_INTERNAL_TIMEOUT,
1157 pmcraid_timeout_handler);
1158}
1159
1160static void pmcraid_process_ccn(struct pmcraid_cmd *cmd);
1161static void pmcraid_process_ldn(struct pmcraid_cmd *cmd);
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171static void pmcraid_send_hcam_cmd(struct pmcraid_cmd *cmd)
1172{
1173 if (cmd->ioa_cb->ioarcb.cdb[1] == PMCRAID_HCAM_CODE_CONFIG_CHANGE)
1174 atomic_set(&(cmd->drv_inst->ccn.ignore), 0);
1175 else
1176 atomic_set(&(cmd->drv_inst->ldn.ignore), 0);
1177
1178 pmcraid_send_cmd(cmd, cmd->cmd_done, 0, NULL);
1179}
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190static struct pmcraid_cmd *pmcraid_init_hcam
1191(
1192 struct pmcraid_instance *pinstance,
1193 u8 type
1194)
1195{
1196 struct pmcraid_cmd *cmd;
1197 struct pmcraid_ioarcb *ioarcb;
1198 struct pmcraid_ioadl_desc *ioadl;
1199 struct pmcraid_hostrcb *hcam;
1200 void (*cmd_done) (struct pmcraid_cmd *);
1201 dma_addr_t dma;
1202 int rcb_size;
1203
1204 cmd = pmcraid_get_free_cmd(pinstance);
1205
1206 if (!cmd) {
1207 pmcraid_err("no free command blocks for hcam\n");
1208 return cmd;
1209 }
1210
1211 if (type == PMCRAID_HCAM_CODE_CONFIG_CHANGE) {
1212 rcb_size = sizeof(struct pmcraid_hcam_ccn_ext);
1213 cmd_done = pmcraid_process_ccn;
1214 dma = pinstance->ccn.baddr + PMCRAID_AEN_HDR_SIZE;
1215 hcam = &pinstance->ccn;
1216 } else {
1217 rcb_size = sizeof(struct pmcraid_hcam_ldn);
1218 cmd_done = pmcraid_process_ldn;
1219 dma = pinstance->ldn.baddr + PMCRAID_AEN_HDR_SIZE;
1220 hcam = &pinstance->ldn;
1221 }
1222
1223
1224 hcam->cmd = cmd;
1225
1226 ioarcb = &cmd->ioa_cb->ioarcb;
1227 ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) +
1228 offsetof(struct pmcraid_ioarcb,
1229 add_data.u.ioadl[0]));
1230 ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc));
1231 ioadl = ioarcb->add_data.u.ioadl;
1232
1233
1234 ioarcb->request_type = REQ_TYPE_HCAM;
1235 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
1236 ioarcb->cdb[0] = PMCRAID_HOST_CONTROLLED_ASYNC;
1237 ioarcb->cdb[1] = type;
1238 ioarcb->cdb[7] = (rcb_size >> 8) & 0xFF;
1239 ioarcb->cdb[8] = (rcb_size) & 0xFF;
1240
1241 ioarcb->data_transfer_length = cpu_to_le32(rcb_size);
1242
1243 ioadl[0].flags |= IOADL_FLAGS_READ_LAST;
1244 ioadl[0].data_len = cpu_to_le32(rcb_size);
1245 ioadl[0].address = cpu_to_le32(dma);
1246
1247 cmd->cmd_done = cmd_done;
1248 return cmd;
1249}
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261static void pmcraid_send_hcam(struct pmcraid_instance *pinstance, u8 type)
1262{
1263 struct pmcraid_cmd *cmd = pmcraid_init_hcam(pinstance, type);
1264 pmcraid_send_hcam_cmd(cmd);
1265}
1266
1267
1268
1269
1270
1271
1272
1273
1274static void pmcraid_prepare_cancel_cmd(
1275 struct pmcraid_cmd *cmd,
1276 struct pmcraid_cmd *cmd_to_cancel
1277)
1278{
1279 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
1280 __be64 ioarcb_addr = cmd_to_cancel->ioa_cb->ioarcb.ioarcb_bus_addr;
1281
1282
1283
1284
1285 ioarcb->resource_handle = cmd_to_cancel->ioa_cb->ioarcb.resource_handle;
1286 ioarcb->request_type = REQ_TYPE_IOACMD;
1287 memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN);
1288 ioarcb->cdb[0] = PMCRAID_ABORT_CMD;
1289
1290
1291
1292
1293
1294 ioarcb_addr = cpu_to_be64(ioarcb_addr);
1295 memcpy(&(ioarcb->cdb[2]), &ioarcb_addr, sizeof(ioarcb_addr));
1296}
1297
1298
1299
1300
1301
1302
1303
1304
1305static void pmcraid_cancel_hcam(
1306 struct pmcraid_cmd *cmd,
1307 u8 type,
1308 void (*cmd_done) (struct pmcraid_cmd *)
1309)
1310{
1311 struct pmcraid_instance *pinstance;
1312 struct pmcraid_hostrcb *hcam;
1313
1314 pinstance = cmd->drv_inst;
1315 hcam = (type == PMCRAID_HCAM_CODE_LOG_DATA) ?
1316 &pinstance->ldn : &pinstance->ccn;
1317
1318
1319
1320
1321 if (hcam->cmd == NULL)
1322 return;
1323
1324 pmcraid_prepare_cancel_cmd(cmd, hcam->cmd);
1325
1326
1327
1328
1329 pmcraid_send_cmd(cmd, cmd_done,
1330 PMCRAID_INTERNAL_TIMEOUT,
1331 pmcraid_timeout_handler);
1332}
1333
1334
1335
1336
1337
1338
1339static void pmcraid_cancel_ccn(struct pmcraid_cmd *cmd)
1340{
1341 pmcraid_info("response for Cancel LDN CDB[0] = %x ioasc = %x\n",
1342 cmd->ioa_cb->ioarcb.cdb[0],
1343 le32_to_cpu(cmd->ioa_cb->ioasa.ioasc));
1344
1345 pmcraid_reinit_cmdblk(cmd);
1346
1347 pmcraid_cancel_hcam(cmd,
1348 PMCRAID_HCAM_CODE_CONFIG_CHANGE,
1349 pmcraid_ioa_shutdown);
1350}
1351
1352
1353
1354
1355
1356
1357static void pmcraid_cancel_ldn(struct pmcraid_cmd *cmd)
1358{
1359 pmcraid_cancel_hcam(cmd,
1360 PMCRAID_HCAM_CODE_LOG_DATA,
1361 pmcraid_cancel_ccn);
1362}
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373static int pmcraid_expose_resource(u16 fw_version,
1374 struct pmcraid_config_table_entry *cfgte)
1375{
1376 int retval = 0;
1377
1378 if (cfgte->resource_type == RES_TYPE_VSET) {
1379 if (fw_version <= PMCRAID_FW_VERSION_1)
1380 retval = ((cfgte->unique_flags1 & 0x80) == 0);
1381 else
1382 retval = ((cfgte->unique_flags0 & 0x80) == 0 &&
1383 (cfgte->unique_flags1 & 0x80) == 0);
1384
1385 } else if (cfgte->resource_type == RES_TYPE_GSCSI)
1386 retval = (RES_BUS(cfgte->resource_address) !=
1387 PMCRAID_VIRTUAL_ENCL_BUS_ID);
1388 return retval;
1389}
1390
1391
1392enum {
1393 PMCRAID_AEN_ATTR_UNSPEC,
1394 PMCRAID_AEN_ATTR_EVENT,
1395 __PMCRAID_AEN_ATTR_MAX,
1396};
1397#define PMCRAID_AEN_ATTR_MAX (__PMCRAID_AEN_ATTR_MAX - 1)
1398
1399
1400enum {
1401 PMCRAID_AEN_CMD_UNSPEC,
1402 PMCRAID_AEN_CMD_EVENT,
1403 __PMCRAID_AEN_CMD_MAX,
1404};
1405#define PMCRAID_AEN_CMD_MAX (__PMCRAID_AEN_CMD_MAX - 1)
1406
1407static struct genl_family pmcraid_event_family = {
1408 .id = GENL_ID_GENERATE,
1409 .name = "pmcraid",
1410 .version = 1,
1411 .maxattr = PMCRAID_AEN_ATTR_MAX
1412};
1413
1414
1415
1416
1417
1418
1419
1420
1421static int pmcraid_netlink_init(void)
1422{
1423 int result;
1424
1425 result = genl_register_family(&pmcraid_event_family);
1426
1427 if (result)
1428 return result;
1429
1430 pmcraid_info("registered NETLINK GENERIC group: %d\n",
1431 pmcraid_event_family.id);
1432
1433 return result;
1434}
1435
1436
1437
1438
1439
1440
1441
1442static void pmcraid_netlink_release(void)
1443{
1444 genl_unregister_family(&pmcraid_event_family);
1445}
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455static int pmcraid_notify_aen(
1456 struct pmcraid_instance *pinstance,
1457 struct pmcraid_aen_msg *aen_msg,
1458 u32 data_size
1459)
1460{
1461 struct sk_buff *skb;
1462 void *msg_header;
1463 u32 total_size, nla_genl_hdr_total_size;
1464 int result;
1465
1466 aen_msg->hostno = (pinstance->host->unique_id << 16 |
1467 MINOR(pinstance->cdev.dev));
1468 aen_msg->length = data_size;
1469
1470 data_size += sizeof(*aen_msg);
1471
1472 total_size = nla_total_size(data_size);
1473
1474 nla_genl_hdr_total_size =
1475 (total_size + (GENL_HDRLEN +
1476 ((struct genl_family *)&pmcraid_event_family)->hdrsize)
1477 + NLMSG_HDRLEN);
1478 skb = genlmsg_new(nla_genl_hdr_total_size, GFP_ATOMIC);
1479
1480
1481 if (!skb) {
1482 pmcraid_err("Failed to allocate aen data SKB of size: %x\n",
1483 total_size);
1484 return -ENOMEM;
1485 }
1486
1487
1488 msg_header = genlmsg_put(skb, 0, 0,
1489 &pmcraid_event_family, 0,
1490 PMCRAID_AEN_CMD_EVENT);
1491 if (!msg_header) {
1492 pmcraid_err("failed to copy command details\n");
1493 nlmsg_free(skb);
1494 return -ENOMEM;
1495 }
1496
1497 result = nla_put(skb, PMCRAID_AEN_ATTR_EVENT, data_size, aen_msg);
1498
1499 if (result) {
1500 pmcraid_err("failed to copy AEN attribute data\n");
1501 nlmsg_free(skb);
1502 return -EINVAL;
1503 }
1504
1505
1506 result = genlmsg_end(skb, msg_header);
1507
1508 if (result < 0) {
1509 pmcraid_err("genlmsg_end failed\n");
1510 nlmsg_free(skb);
1511 return result;
1512 }
1513
1514 result =
1515 genlmsg_multicast(skb, 0, pmcraid_event_family.id, GFP_ATOMIC);
1516
1517
1518
1519
1520 if (result)
1521 pmcraid_info("error (%x) sending aen event message\n", result);
1522 return result;
1523}
1524
1525
1526
1527
1528
1529
1530
1531
1532static int pmcraid_notify_ccn(struct pmcraid_instance *pinstance)
1533{
1534 return pmcraid_notify_aen(pinstance,
1535 pinstance->ccn.msg,
1536 pinstance->ccn.hcam->data_len +
1537 sizeof(struct pmcraid_hcam_hdr));
1538}
1539
1540
1541
1542
1543
1544
1545
1546
1547static int pmcraid_notify_ldn(struct pmcraid_instance *pinstance)
1548{
1549 return pmcraid_notify_aen(pinstance,
1550 pinstance->ldn.msg,
1551 pinstance->ldn.hcam->data_len +
1552 sizeof(struct pmcraid_hcam_hdr));
1553}
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563static void pmcraid_notify_ioastate(struct pmcraid_instance *pinstance, u32 evt)
1564{
1565 pinstance->scn.ioa_state = evt;
1566 pmcraid_notify_aen(pinstance,
1567 &pinstance->scn.msg,
1568 sizeof(u32));
1569}
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579static void pmcraid_handle_config_change(struct pmcraid_instance *pinstance)
1580{
1581 struct pmcraid_config_table_entry *cfg_entry;
1582 struct pmcraid_hcam_ccn *ccn_hcam;
1583 struct pmcraid_cmd *cmd;
1584 struct pmcraid_cmd *cfgcmd;
1585 struct pmcraid_resource_entry *res = NULL;
1586 unsigned long lock_flags;
1587 unsigned long host_lock_flags;
1588 u32 new_entry = 1;
1589 u32 hidden_entry = 0;
1590 u16 fw_version;
1591 int rc;
1592
1593 ccn_hcam = (struct pmcraid_hcam_ccn *)pinstance->ccn.hcam;
1594 cfg_entry = &ccn_hcam->cfg_entry;
1595 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
1596
1597 pmcraid_info("CCN(%x): %x timestamp: %llx type: %x lost: %x flags: %x \
1598 res: %x:%x:%x:%x\n",
1599 pinstance->ccn.hcam->ilid,
1600 pinstance->ccn.hcam->op_code,
1601 ((pinstance->ccn.hcam->timestamp1) |
1602 ((pinstance->ccn.hcam->timestamp2 & 0xffffffffLL) << 32)),
1603 pinstance->ccn.hcam->notification_type,
1604 pinstance->ccn.hcam->notification_lost,
1605 pinstance->ccn.hcam->flags,
1606 pinstance->host->unique_id,
1607 RES_IS_VSET(*cfg_entry) ? PMCRAID_VSET_BUS_ID :
1608 (RES_IS_GSCSI(*cfg_entry) ? PMCRAID_PHYS_BUS_ID :
1609 RES_BUS(cfg_entry->resource_address)),
1610 RES_IS_VSET(*cfg_entry) ?
1611 (fw_version <= PMCRAID_FW_VERSION_1 ?
1612 cfg_entry->unique_flags1 :
1613 cfg_entry->array_id & 0xFF) :
1614 RES_TARGET(cfg_entry->resource_address),
1615 RES_LUN(cfg_entry->resource_address));
1616
1617
1618
1619 if (pinstance->ccn.hcam->notification_lost) {
1620 cfgcmd = pmcraid_get_free_cmd(pinstance);
1621 if (cfgcmd) {
1622 pmcraid_info("lost CCN, reading config table\b");
1623 pinstance->reinit_cfg_table = 1;
1624 pmcraid_querycfg(cfgcmd);
1625 } else {
1626 pmcraid_err("lost CCN, no free cmd for querycfg\n");
1627 }
1628 goto out_notify_apps;
1629 }
1630
1631
1632
1633
1634
1635 if (pinstance->ccn.hcam->notification_type ==
1636 NOTIFICATION_TYPE_ENTRY_CHANGED &&
1637 cfg_entry->resource_type == RES_TYPE_VSET) {
1638
1639 if (fw_version <= PMCRAID_FW_VERSION_1)
1640 hidden_entry = (cfg_entry->unique_flags1 & 0x80) != 0;
1641 else
1642 hidden_entry = (cfg_entry->unique_flags1 & 0x80) != 0;
1643
1644 } else if (!pmcraid_expose_resource(fw_version, cfg_entry)) {
1645 goto out_notify_apps;
1646 }
1647
1648 spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
1649 list_for_each_entry(res, &pinstance->used_res_q, queue) {
1650 rc = memcmp(&res->cfg_entry.resource_address,
1651 &cfg_entry->resource_address,
1652 sizeof(cfg_entry->resource_address));
1653 if (!rc) {
1654 new_entry = 0;
1655 break;
1656 }
1657 }
1658
1659 if (new_entry) {
1660
1661 if (hidden_entry) {
1662 spin_unlock_irqrestore(&pinstance->resource_lock,
1663 lock_flags);
1664 goto out_notify_apps;
1665 }
1666
1667
1668
1669
1670
1671 if (list_empty(&pinstance->free_res_q)) {
1672 spin_unlock_irqrestore(&pinstance->resource_lock,
1673 lock_flags);
1674 pmcraid_err("too many resources attached\n");
1675 spin_lock_irqsave(pinstance->host->host_lock,
1676 host_lock_flags);
1677 pmcraid_send_hcam(pinstance,
1678 PMCRAID_HCAM_CODE_CONFIG_CHANGE);
1679 spin_unlock_irqrestore(pinstance->host->host_lock,
1680 host_lock_flags);
1681 return;
1682 }
1683
1684 res = list_entry(pinstance->free_res_q.next,
1685 struct pmcraid_resource_entry, queue);
1686
1687 list_del(&res->queue);
1688 res->scsi_dev = NULL;
1689 res->reset_progress = 0;
1690 list_add_tail(&res->queue, &pinstance->used_res_q);
1691 }
1692
1693 memcpy(&res->cfg_entry, cfg_entry, pinstance->config_table_entry_size);
1694
1695 if (pinstance->ccn.hcam->notification_type ==
1696 NOTIFICATION_TYPE_ENTRY_DELETED || hidden_entry) {
1697 if (res->scsi_dev) {
1698 if (fw_version <= PMCRAID_FW_VERSION_1)
1699 res->cfg_entry.unique_flags1 &= 0x7F;
1700 else
1701 res->cfg_entry.array_id &= 0xFF;
1702 res->change_detected = RES_CHANGE_DEL;
1703 res->cfg_entry.resource_handle =
1704 PMCRAID_INVALID_RES_HANDLE;
1705 schedule_work(&pinstance->worker_q);
1706 } else {
1707
1708 list_move_tail(&res->queue, &pinstance->free_res_q);
1709 }
1710 } else if (!res->scsi_dev) {
1711 res->change_detected = RES_CHANGE_ADD;
1712 schedule_work(&pinstance->worker_q);
1713 }
1714 spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
1715
1716out_notify_apps:
1717
1718
1719 if (!pmcraid_disable_aen)
1720 pmcraid_notify_ccn(pinstance);
1721
1722 cmd = pmcraid_init_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE);
1723 if (cmd)
1724 pmcraid_send_hcam_cmd(cmd);
1725}
1726
1727
1728
1729
1730
1731
1732
1733static struct pmcraid_ioasc_error *pmcraid_get_error_info(u32 ioasc)
1734{
1735 int i;
1736 for (i = 0; i < ARRAY_SIZE(pmcraid_ioasc_error_table); i++) {
1737 if (pmcraid_ioasc_error_table[i].ioasc_code == ioasc)
1738 return &pmcraid_ioasc_error_table[i];
1739 }
1740 return NULL;
1741}
1742
1743
1744
1745
1746
1747
1748void pmcraid_ioasc_logger(u32 ioasc, struct pmcraid_cmd *cmd)
1749{
1750 struct pmcraid_ioasc_error *error_info = pmcraid_get_error_info(ioasc);
1751
1752 if (error_info == NULL ||
1753 cmd->drv_inst->current_log_level < error_info->log_level)
1754 return;
1755
1756
1757 pmcraid_err("cmd [%x] for resource %x failed with %x(%s)\n",
1758 cmd->ioa_cb->ioarcb.cdb[0],
1759 cmd->ioa_cb->ioarcb.resource_handle,
1760 le32_to_cpu(ioasc), error_info->error_string);
1761}
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771static void pmcraid_handle_error_log(struct pmcraid_instance *pinstance)
1772{
1773 struct pmcraid_hcam_ldn *hcam_ldn;
1774 u32 ioasc;
1775
1776 hcam_ldn = (struct pmcraid_hcam_ldn *)pinstance->ldn.hcam;
1777
1778 pmcraid_info
1779 ("LDN(%x): %x type: %x lost: %x flags: %x overlay id: %x\n",
1780 pinstance->ldn.hcam->ilid,
1781 pinstance->ldn.hcam->op_code,
1782 pinstance->ldn.hcam->notification_type,
1783 pinstance->ldn.hcam->notification_lost,
1784 pinstance->ldn.hcam->flags,
1785 pinstance->ldn.hcam->overlay_id);
1786
1787
1788 if (pinstance->ldn.hcam->notification_type !=
1789 NOTIFICATION_TYPE_ERROR_LOG)
1790 return;
1791
1792 if (pinstance->ldn.hcam->notification_lost ==
1793 HOSTRCB_NOTIFICATIONS_LOST)
1794 dev_info(&pinstance->pdev->dev, "Error notifications lost\n");
1795
1796 ioasc = le32_to_cpu(hcam_ldn->error_log.fd_ioasc);
1797
1798 if (ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET ||
1799 ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER) {
1800 dev_info(&pinstance->pdev->dev,
1801 "UnitAttention due to IOA Bus Reset\n");
1802 scsi_report_bus_reset(
1803 pinstance->host,
1804 RES_BUS(hcam_ldn->error_log.fd_ra));
1805 }
1806
1807 return;
1808}
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820static void pmcraid_process_ccn(struct pmcraid_cmd *cmd)
1821{
1822 struct pmcraid_instance *pinstance = cmd->drv_inst;
1823 u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
1824 unsigned long lock_flags;
1825
1826 pinstance->ccn.cmd = NULL;
1827 pmcraid_return_cmd(cmd);
1828
1829
1830
1831
1832
1833 if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET ||
1834 atomic_read(&pinstance->ccn.ignore) == 1) {
1835 return;
1836 } else if (ioasc) {
1837 dev_info(&pinstance->pdev->dev,
1838 "Host RCB (CCN) failed with IOASC: 0x%08X\n", ioasc);
1839 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
1840 pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE);
1841 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
1842 } else {
1843 pmcraid_handle_config_change(pinstance);
1844 }
1845}
1846
1847
1848
1849
1850
1851
1852
1853
1854static void pmcraid_initiate_reset(struct pmcraid_instance *);
1855static void pmcraid_set_timestamp(struct pmcraid_cmd *cmd);
1856
1857static void pmcraid_process_ldn(struct pmcraid_cmd *cmd)
1858{
1859 struct pmcraid_instance *pinstance = cmd->drv_inst;
1860 struct pmcraid_hcam_ldn *ldn_hcam =
1861 (struct pmcraid_hcam_ldn *)pinstance->ldn.hcam;
1862 u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
1863 u32 fd_ioasc = le32_to_cpu(ldn_hcam->error_log.fd_ioasc);
1864 unsigned long lock_flags;
1865
1866
1867 pinstance->ldn.cmd = NULL;
1868 pmcraid_return_cmd(cmd);
1869
1870
1871
1872
1873
1874 if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET ||
1875 atomic_read(&pinstance->ccn.ignore) == 1) {
1876 return;
1877 } else if (!ioasc) {
1878 pmcraid_handle_error_log(pinstance);
1879 if (fd_ioasc == PMCRAID_IOASC_NR_IOA_RESET_REQUIRED) {
1880 spin_lock_irqsave(pinstance->host->host_lock,
1881 lock_flags);
1882 pmcraid_initiate_reset(pinstance);
1883 spin_unlock_irqrestore(pinstance->host->host_lock,
1884 lock_flags);
1885 return;
1886 }
1887 if (fd_ioasc == PMCRAID_IOASC_TIME_STAMP_OUT_OF_SYNC) {
1888 pinstance->timestamp_error = 1;
1889 pmcraid_set_timestamp(cmd);
1890 }
1891 } else {
1892 dev_info(&pinstance->pdev->dev,
1893 "Host RCB(LDN) failed with IOASC: 0x%08X\n", ioasc);
1894 }
1895
1896 if (!pmcraid_disable_aen)
1897 pmcraid_notify_ldn(pinstance);
1898
1899 cmd = pmcraid_init_hcam(pinstance, PMCRAID_HCAM_CODE_LOG_DATA);
1900 if (cmd)
1901 pmcraid_send_hcam_cmd(cmd);
1902}
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912static void pmcraid_register_hcams(struct pmcraid_instance *pinstance)
1913{
1914 pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_CONFIG_CHANGE);
1915 pmcraid_send_hcam(pinstance, PMCRAID_HCAM_CODE_LOG_DATA);
1916}
1917
1918
1919
1920
1921
1922static void pmcraid_unregister_hcams(struct pmcraid_cmd *cmd)
1923{
1924 struct pmcraid_instance *pinstance = cmd->drv_inst;
1925
1926
1927
1928
1929
1930
1931 atomic_set(&pinstance->ccn.ignore, 1);
1932 atomic_set(&pinstance->ldn.ignore, 1);
1933
1934
1935
1936
1937
1938 if ((pinstance->force_ioa_reset && !pinstance->ioa_bringdown) ||
1939 pinstance->ioa_unit_check) {
1940 pinstance->force_ioa_reset = 0;
1941 pinstance->ioa_unit_check = 0;
1942 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
1943 pmcraid_reset_alert(cmd);
1944 return;
1945 }
1946
1947
1948
1949
1950
1951 pmcraid_cancel_ldn(cmd);
1952}
1953
1954
1955
1956
1957
1958
1959
1960static void pmcraid_reinit_buffers(struct pmcraid_instance *);
1961
1962static int pmcraid_reset_enable_ioa(struct pmcraid_instance *pinstance)
1963{
1964 u32 intrs;
1965
1966 pmcraid_reinit_buffers(pinstance);
1967 intrs = pmcraid_read_interrupts(pinstance);
1968
1969 pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS);
1970
1971 if (intrs & INTRS_TRANSITION_TO_OPERATIONAL) {
1972 if (!pinstance->interrupt_mode) {
1973 iowrite32(INTRS_TRANSITION_TO_OPERATIONAL,
1974 pinstance->int_regs.
1975 ioa_host_interrupt_mask_reg);
1976 iowrite32(INTRS_TRANSITION_TO_OPERATIONAL,
1977 pinstance->int_regs.ioa_host_interrupt_clr_reg);
1978 }
1979 return 1;
1980 } else {
1981 return 0;
1982 }
1983}
1984
1985
1986
1987
1988
1989
1990
1991
1992static void pmcraid_soft_reset(struct pmcraid_cmd *cmd)
1993{
1994 struct pmcraid_instance *pinstance = cmd->drv_inst;
1995 u32 int_reg;
1996 u32 doorbell;
1997
1998
1999
2000
2001
2002 cmd->cmd_done = pmcraid_ioa_reset;
2003 cmd->timer.data = (unsigned long)cmd;
2004 cmd->timer.expires = jiffies +
2005 msecs_to_jiffies(PMCRAID_TRANSOP_TIMEOUT);
2006 cmd->timer.function = (void (*)(unsigned long))pmcraid_timeout_handler;
2007
2008 if (!timer_pending(&cmd->timer))
2009 add_timer(&cmd->timer);
2010
2011
2012
2013
2014 doorbell = DOORBELL_RUNTIME_RESET |
2015 DOORBELL_ENABLE_DESTRUCTIVE_DIAGS;
2016
2017
2018
2019
2020 if (pinstance->interrupt_mode) {
2021 iowrite32(DOORBELL_INTR_MODE_MSIX,
2022 pinstance->int_regs.host_ioa_interrupt_reg);
2023 ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
2024 }
2025
2026 iowrite32(doorbell, pinstance->int_regs.host_ioa_interrupt_reg);
2027 ioread32(pinstance->int_regs.host_ioa_interrupt_reg),
2028 int_reg = ioread32(pinstance->int_regs.ioa_host_interrupt_reg);
2029
2030 pmcraid_info("Waiting for IOA to become operational %x:%x\n",
2031 ioread32(pinstance->int_regs.host_ioa_interrupt_reg),
2032 int_reg);
2033}
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043static void pmcraid_get_dump(struct pmcraid_instance *pinstance)
2044{
2045 pmcraid_info("%s is not yet implemented\n", __func__);
2046}
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060static void pmcraid_fail_outstanding_cmds(struct pmcraid_instance *pinstance)
2061{
2062 struct pmcraid_cmd *cmd, *temp;
2063 unsigned long lock_flags;
2064
2065
2066
2067
2068 spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags);
2069 list_for_each_entry_safe(cmd, temp, &pinstance->pending_cmd_pool,
2070 free_list) {
2071 list_del(&cmd->free_list);
2072 spin_unlock_irqrestore(&pinstance->pending_pool_lock,
2073 lock_flags);
2074 cmd->ioa_cb->ioasa.ioasc =
2075 cpu_to_le32(PMCRAID_IOASC_IOA_WAS_RESET);
2076 cmd->ioa_cb->ioasa.ilid =
2077 cpu_to_be32(PMCRAID_DRIVER_ILID);
2078
2079
2080 del_timer(&cmd->timer);
2081
2082
2083
2084
2085
2086
2087 if (cmd->scsi_cmd) {
2088
2089 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
2090 __le32 resp = cmd->ioa_cb->ioarcb.response_handle;
2091
2092 scsi_cmd->result |= DID_ERROR << 16;
2093
2094 scsi_dma_unmap(scsi_cmd);
2095 pmcraid_return_cmd(cmd);
2096
2097 pmcraid_info("failing(%d) CDB[0] = %x result: %x\n",
2098 le32_to_cpu(resp) >> 2,
2099 cmd->ioa_cb->ioarcb.cdb[0],
2100 scsi_cmd->result);
2101 scsi_cmd->scsi_done(scsi_cmd);
2102 } else if (cmd->cmd_done == pmcraid_internal_done ||
2103 cmd->cmd_done == pmcraid_erp_done) {
2104 cmd->cmd_done(cmd);
2105 } else if (cmd->cmd_done != pmcraid_ioa_reset &&
2106 cmd->cmd_done != pmcraid_ioa_shutdown_done) {
2107 pmcraid_return_cmd(cmd);
2108 }
2109
2110 atomic_dec(&pinstance->outstanding_cmds);
2111 spin_lock_irqsave(&pinstance->pending_pool_lock, lock_flags);
2112 }
2113
2114 spin_unlock_irqrestore(&pinstance->pending_pool_lock, lock_flags);
2115}
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132static void pmcraid_ioa_reset(struct pmcraid_cmd *cmd)
2133{
2134 struct pmcraid_instance *pinstance = cmd->drv_inst;
2135 u8 reset_complete = 0;
2136
2137 pinstance->ioa_reset_in_progress = 1;
2138
2139 if (pinstance->reset_cmd != cmd) {
2140 pmcraid_err("reset is called with different command block\n");
2141 pinstance->reset_cmd = cmd;
2142 }
2143
2144 pmcraid_info("reset_engine: state = %d, command = %p\n",
2145 pinstance->ioa_state, cmd);
2146
2147 switch (pinstance->ioa_state) {
2148
2149 case IOA_STATE_DEAD:
2150
2151
2152
2153
2154 pmcraid_err("IOA is offline no reset is possible\n");
2155 reset_complete = 1;
2156 break;
2157
2158 case IOA_STATE_IN_BRINGDOWN:
2159
2160
2161
2162
2163 pmcraid_disable_interrupts(pinstance, ~0);
2164 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
2165 pmcraid_reset_alert(cmd);
2166 break;
2167
2168 case IOA_STATE_UNKNOWN:
2169
2170
2171
2172 scsi_block_requests(pinstance->host);
2173
2174
2175
2176
2177
2178 if (pinstance->ioa_hard_reset == 0) {
2179 if (ioread32(pinstance->ioa_status) &
2180 INTRS_TRANSITION_TO_OPERATIONAL) {
2181 pmcraid_info("sticky bit set, bring-up\n");
2182 pinstance->ioa_state = IOA_STATE_IN_BRINGUP;
2183 pmcraid_reinit_cmdblk(cmd);
2184 pmcraid_identify_hrrq(cmd);
2185 } else {
2186 pinstance->ioa_state = IOA_STATE_IN_SOFT_RESET;
2187 pmcraid_soft_reset(cmd);
2188 }
2189 } else {
2190
2191
2192
2193 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
2194 pmcraid_reset_alert(cmd);
2195 }
2196 break;
2197
2198 case IOA_STATE_IN_RESET_ALERT:
2199
2200
2201
2202
2203
2204 pinstance->ioa_state = IOA_STATE_IN_HARD_RESET;
2205 pmcraid_start_bist(cmd);
2206 break;
2207
2208 case IOA_STATE_IN_HARD_RESET:
2209 pinstance->ioa_reset_attempts++;
2210
2211
2212 if (pinstance->ioa_reset_attempts > PMCRAID_RESET_ATTEMPTS) {
2213 pinstance->ioa_reset_attempts = 0;
2214 pmcraid_err("IOA didn't respond marking it as dead\n");
2215 pinstance->ioa_state = IOA_STATE_DEAD;
2216
2217 if (pinstance->ioa_bringdown)
2218 pmcraid_notify_ioastate(pinstance,
2219 PMC_DEVICE_EVENT_SHUTDOWN_FAILED);
2220 else
2221 pmcraid_notify_ioastate(pinstance,
2222 PMC_DEVICE_EVENT_RESET_FAILED);
2223 reset_complete = 1;
2224 break;
2225 }
2226
2227
2228
2229
2230 pci_restore_state(pinstance->pdev);
2231
2232
2233 pmcraid_fail_outstanding_cmds(pinstance);
2234
2235
2236 if (pinstance->ioa_unit_check) {
2237 pmcraid_info("unit check is active\n");
2238 pinstance->ioa_unit_check = 0;
2239 pmcraid_get_dump(pinstance);
2240 pinstance->ioa_reset_attempts--;
2241 pinstance->ioa_state = IOA_STATE_IN_RESET_ALERT;
2242 pmcraid_reset_alert(cmd);
2243 break;
2244 }
2245
2246
2247
2248
2249
2250 if (pinstance->ioa_bringdown) {
2251 pmcraid_info("bringing down the adapter\n");
2252 pinstance->ioa_shutdown_type = SHUTDOWN_NONE;
2253 pinstance->ioa_bringdown = 0;
2254 pinstance->ioa_state = IOA_STATE_UNKNOWN;
2255 pmcraid_notify_ioastate(pinstance,
2256 PMC_DEVICE_EVENT_SHUTDOWN_SUCCESS);
2257 reset_complete = 1;
2258 } else {
2259
2260
2261
2262
2263 if (pmcraid_reset_enable_ioa(pinstance)) {
2264 pinstance->ioa_state = IOA_STATE_IN_BRINGUP;
2265 pmcraid_info("bringing up the adapter\n");
2266 pmcraid_reinit_cmdblk(cmd);
2267 pmcraid_identify_hrrq(cmd);
2268 } else {
2269 pinstance->ioa_state = IOA_STATE_IN_SOFT_RESET;
2270 pmcraid_soft_reset(cmd);
2271 }
2272 }
2273 break;
2274
2275 case IOA_STATE_IN_SOFT_RESET:
2276
2277
2278
2279 pmcraid_info("In softreset proceeding with bring-up\n");
2280 pinstance->ioa_state = IOA_STATE_IN_BRINGUP;
2281
2282
2283
2284
2285
2286 pmcraid_identify_hrrq(cmd);
2287 break;
2288
2289 case IOA_STATE_IN_BRINGUP:
2290
2291
2292
2293 pinstance->ioa_state = IOA_STATE_OPERATIONAL;
2294 reset_complete = 1;
2295 break;
2296
2297 case IOA_STATE_OPERATIONAL:
2298 default:
2299
2300
2301
2302
2303
2304 if (pinstance->ioa_shutdown_type == SHUTDOWN_NONE &&
2305 pinstance->force_ioa_reset == 0) {
2306 pmcraid_notify_ioastate(pinstance,
2307 PMC_DEVICE_EVENT_RESET_SUCCESS);
2308 reset_complete = 1;
2309 } else {
2310 if (pinstance->ioa_shutdown_type != SHUTDOWN_NONE)
2311 pinstance->ioa_state = IOA_STATE_IN_BRINGDOWN;
2312 pmcraid_reinit_cmdblk(cmd);
2313 pmcraid_unregister_hcams(cmd);
2314 }
2315 break;
2316 }
2317
2318
2319
2320
2321
2322
2323 if (reset_complete) {
2324 pinstance->ioa_reset_in_progress = 0;
2325 pinstance->ioa_reset_attempts = 0;
2326 pinstance->reset_cmd = NULL;
2327 pinstance->ioa_shutdown_type = SHUTDOWN_NONE;
2328 pinstance->ioa_bringdown = 0;
2329 pmcraid_return_cmd(cmd);
2330
2331
2332
2333
2334 if (pinstance->ioa_state == IOA_STATE_OPERATIONAL)
2335 pmcraid_register_hcams(pinstance);
2336
2337 wake_up_all(&pinstance->reset_wait_q);
2338 }
2339
2340 return;
2341}
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354static void pmcraid_initiate_reset(struct pmcraid_instance *pinstance)
2355{
2356 struct pmcraid_cmd *cmd;
2357
2358
2359
2360
2361 if (!pinstance->ioa_reset_in_progress) {
2362 scsi_block_requests(pinstance->host);
2363 cmd = pmcraid_get_free_cmd(pinstance);
2364
2365 if (cmd == NULL) {
2366 pmcraid_err("no cmnd blocks for initiate_reset\n");
2367 return;
2368 }
2369
2370 pinstance->ioa_shutdown_type = SHUTDOWN_NONE;
2371 pinstance->reset_cmd = cmd;
2372 pinstance->force_ioa_reset = 1;
2373 pmcraid_notify_ioastate(pinstance,
2374 PMC_DEVICE_EVENT_RESET_START);
2375 pmcraid_ioa_reset(cmd);
2376 }
2377}
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393static int pmcraid_reset_reload(
2394 struct pmcraid_instance *pinstance,
2395 u8 shutdown_type,
2396 u8 target_state
2397)
2398{
2399 struct pmcraid_cmd *reset_cmd = NULL;
2400 unsigned long lock_flags;
2401 int reset = 1;
2402
2403 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
2404
2405 if (pinstance->ioa_reset_in_progress) {
2406 pmcraid_info("reset_reload: reset is already in progress\n");
2407
2408 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
2409
2410 wait_event(pinstance->reset_wait_q,
2411 !pinstance->ioa_reset_in_progress);
2412
2413 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
2414
2415 if (pinstance->ioa_state == IOA_STATE_DEAD) {
2416 spin_unlock_irqrestore(pinstance->host->host_lock,
2417 lock_flags);
2418 pmcraid_info("reset_reload: IOA is dead\n");
2419 return reset;
2420 } else if (pinstance->ioa_state == target_state) {
2421 reset = 0;
2422 }
2423 }
2424
2425 if (reset) {
2426 pmcraid_info("reset_reload: proceeding with reset\n");
2427 scsi_block_requests(pinstance->host);
2428 reset_cmd = pmcraid_get_free_cmd(pinstance);
2429
2430 if (reset_cmd == NULL) {
2431 pmcraid_err("no free cmnd for reset_reload\n");
2432 spin_unlock_irqrestore(pinstance->host->host_lock,
2433 lock_flags);
2434 return reset;
2435 }
2436
2437 if (shutdown_type == SHUTDOWN_NORMAL)
2438 pinstance->ioa_bringdown = 1;
2439
2440 pinstance->ioa_shutdown_type = shutdown_type;
2441 pinstance->reset_cmd = reset_cmd;
2442 pinstance->force_ioa_reset = reset;
2443 pmcraid_info("reset_reload: initiating reset\n");
2444 pmcraid_ioa_reset(reset_cmd);
2445 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
2446 pmcraid_info("reset_reload: waiting for reset to complete\n");
2447 wait_event(pinstance->reset_wait_q,
2448 !pinstance->ioa_reset_in_progress);
2449
2450 pmcraid_info("reset_reload: reset is complete !!\n");
2451 scsi_unblock_requests(pinstance->host);
2452 if (pinstance->ioa_state == target_state)
2453 reset = 0;
2454 }
2455
2456 return reset;
2457}
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467static int pmcraid_reset_bringdown(struct pmcraid_instance *pinstance)
2468{
2469 return pmcraid_reset_reload(pinstance,
2470 SHUTDOWN_NORMAL,
2471 IOA_STATE_UNKNOWN);
2472}
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482static int pmcraid_reset_bringup(struct pmcraid_instance *pinstance)
2483{
2484 pmcraid_notify_ioastate(pinstance, PMC_DEVICE_EVENT_RESET_START);
2485
2486 return pmcraid_reset_reload(pinstance,
2487 SHUTDOWN_NONE,
2488 IOA_STATE_OPERATIONAL);
2489}
2490
2491
2492
2493
2494
2495
2496
2497
2498static void pmcraid_request_sense(struct pmcraid_cmd *cmd)
2499{
2500 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
2501 struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl;
2502
2503
2504 cmd->sense_buffer = pci_alloc_consistent(cmd->drv_inst->pdev,
2505 SCSI_SENSE_BUFFERSIZE,
2506 &cmd->sense_buffer_dma);
2507
2508 if (cmd->sense_buffer == NULL) {
2509 pmcraid_err
2510 ("couldn't allocate sense buffer for request sense\n");
2511 pmcraid_erp_done(cmd);
2512 return;
2513 }
2514
2515
2516 memset(&cmd->ioa_cb->ioasa, 0, sizeof(struct pmcraid_ioasa));
2517 memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN);
2518 ioarcb->request_flags0 = (SYNC_COMPLETE |
2519 NO_LINK_DESCS |
2520 INHIBIT_UL_CHECK);
2521 ioarcb->request_type = REQ_TYPE_SCSI;
2522 ioarcb->cdb[0] = REQUEST_SENSE;
2523 ioarcb->cdb[4] = SCSI_SENSE_BUFFERSIZE;
2524
2525 ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) +
2526 offsetof(struct pmcraid_ioarcb,
2527 add_data.u.ioadl[0]));
2528 ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc));
2529
2530 ioarcb->data_transfer_length = cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
2531
2532 ioadl->address = cpu_to_le64(cmd->sense_buffer_dma);
2533 ioadl->data_len = cpu_to_le32(SCSI_SENSE_BUFFERSIZE);
2534 ioadl->flags = IOADL_FLAGS_LAST_DESC;
2535
2536
2537
2538
2539
2540
2541 pmcraid_send_cmd(cmd, pmcraid_erp_done,
2542 PMCRAID_REQUEST_SENSE_TIMEOUT,
2543 pmcraid_timeout_handler);
2544}
2545
2546
2547
2548
2549
2550
2551
2552
2553static void pmcraid_cancel_all(struct pmcraid_cmd *cmd, u32 sense)
2554{
2555 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
2556 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
2557 struct pmcraid_resource_entry *res = scsi_cmd->device->hostdata;
2558 void (*cmd_done) (struct pmcraid_cmd *) = sense ? pmcraid_erp_done
2559 : pmcraid_request_sense;
2560
2561 memset(ioarcb->cdb, 0, PMCRAID_MAX_CDB_LEN);
2562 ioarcb->request_flags0 = SYNC_OVERRIDE;
2563 ioarcb->request_type = REQ_TYPE_IOACMD;
2564 ioarcb->cdb[0] = PMCRAID_CANCEL_ALL_REQUESTS;
2565
2566 if (RES_IS_GSCSI(res->cfg_entry))
2567 ioarcb->cdb[1] = PMCRAID_SYNC_COMPLETE_AFTER_CANCEL;
2568
2569 ioarcb->ioadl_bus_addr = 0;
2570 ioarcb->ioadl_length = 0;
2571 ioarcb->data_transfer_length = 0;
2572 ioarcb->ioarcb_bus_addr &= (~0x1FULL);
2573
2574
2575
2576
2577 pmcraid_send_cmd(cmd, cmd_done,
2578 PMCRAID_REQUEST_SENSE_TIMEOUT,
2579 pmcraid_timeout_handler);
2580}
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590static void pmcraid_frame_auto_sense(struct pmcraid_cmd *cmd)
2591{
2592 u8 *sense_buf = cmd->scsi_cmd->sense_buffer;
2593 struct pmcraid_resource_entry *res = cmd->scsi_cmd->device->hostdata;
2594 struct pmcraid_ioasa *ioasa = &cmd->ioa_cb->ioasa;
2595 u32 ioasc = le32_to_cpu(ioasa->ioasc);
2596 u32 failing_lba = 0;
2597
2598 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
2599 cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
2600
2601 if (RES_IS_VSET(res->cfg_entry) &&
2602 ioasc == PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC &&
2603 ioasa->u.vset.failing_lba_hi != 0) {
2604
2605 sense_buf[0] = 0x72;
2606 sense_buf[1] = PMCRAID_IOASC_SENSE_KEY(ioasc);
2607 sense_buf[2] = PMCRAID_IOASC_SENSE_CODE(ioasc);
2608 sense_buf[3] = PMCRAID_IOASC_SENSE_QUAL(ioasc);
2609
2610 sense_buf[7] = 12;
2611 sense_buf[8] = 0;
2612 sense_buf[9] = 0x0A;
2613 sense_buf[10] = 0x80;
2614
2615 failing_lba = le32_to_cpu(ioasa->u.vset.failing_lba_hi);
2616
2617 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
2618 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
2619 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
2620 sense_buf[15] = failing_lba & 0x000000ff;
2621
2622 failing_lba = le32_to_cpu(ioasa->u.vset.failing_lba_lo);
2623
2624 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
2625 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
2626 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
2627 sense_buf[19] = failing_lba & 0x000000ff;
2628 } else {
2629 sense_buf[0] = 0x70;
2630 sense_buf[2] = PMCRAID_IOASC_SENSE_KEY(ioasc);
2631 sense_buf[12] = PMCRAID_IOASC_SENSE_CODE(ioasc);
2632 sense_buf[13] = PMCRAID_IOASC_SENSE_QUAL(ioasc);
2633
2634 if (ioasc == PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC) {
2635 if (RES_IS_VSET(res->cfg_entry))
2636 failing_lba =
2637 le32_to_cpu(ioasa->u.
2638 vset.failing_lba_lo);
2639 sense_buf[0] |= 0x80;
2640 sense_buf[3] = (failing_lba >> 24) & 0xff;
2641 sense_buf[4] = (failing_lba >> 16) & 0xff;
2642 sense_buf[5] = (failing_lba >> 8) & 0xff;
2643 sense_buf[6] = failing_lba & 0xff;
2644 }
2645
2646 sense_buf[7] = 6;
2647 }
2648}
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662static int pmcraid_error_handler(struct pmcraid_cmd *cmd)
2663{
2664 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
2665 struct pmcraid_resource_entry *res = scsi_cmd->device->hostdata;
2666 struct pmcraid_instance *pinstance = cmd->drv_inst;
2667 struct pmcraid_ioasa *ioasa = &cmd->ioa_cb->ioasa;
2668 u32 ioasc = le32_to_cpu(ioasa->ioasc);
2669 u32 masked_ioasc = ioasc & PMCRAID_IOASC_SENSE_MASK;
2670 u32 sense_copied = 0;
2671
2672 if (!res) {
2673 pmcraid_info("resource pointer is NULL\n");
2674 return 0;
2675 }
2676
2677
2678 if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD)
2679 atomic_inc(&res->read_failures);
2680 else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD)
2681 atomic_inc(&res->write_failures);
2682
2683 if (!RES_IS_GSCSI(res->cfg_entry) &&
2684 masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) {
2685 pmcraid_frame_auto_sense(cmd);
2686 }
2687
2688
2689 pmcraid_ioasc_logger(ioasc, cmd);
2690
2691 switch (masked_ioasc) {
2692
2693 case PMCRAID_IOASC_AC_TERMINATED_BY_HOST:
2694 scsi_cmd->result |= (DID_ABORT << 16);
2695 break;
2696
2697 case PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE:
2698 case PMCRAID_IOASC_HW_CANNOT_COMMUNICATE:
2699 scsi_cmd->result |= (DID_NO_CONNECT << 16);
2700 break;
2701
2702 case PMCRAID_IOASC_NR_SYNC_REQUIRED:
2703 res->sync_reqd = 1;
2704 scsi_cmd->result |= (DID_IMM_RETRY << 16);
2705 break;
2706
2707 case PMCRAID_IOASC_ME_READ_ERROR_NO_REALLOC:
2708 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
2709 break;
2710
2711 case PMCRAID_IOASC_UA_BUS_WAS_RESET:
2712 case PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER:
2713 if (!res->reset_progress)
2714 scsi_report_bus_reset(pinstance->host,
2715 scsi_cmd->device->channel);
2716 scsi_cmd->result |= (DID_ERROR << 16);
2717 break;
2718
2719 case PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR:
2720 scsi_cmd->result |= PMCRAID_IOASC_SENSE_STATUS(ioasc);
2721 res->sync_reqd = 1;
2722
2723
2724
2725
2726 if (PMCRAID_IOASC_SENSE_STATUS(ioasc) !=
2727 SAM_STAT_CHECK_CONDITION &&
2728 PMCRAID_IOASC_SENSE_STATUS(ioasc) != SAM_STAT_ACA_ACTIVE)
2729 return 0;
2730
2731
2732
2733
2734 if (ioasa->auto_sense_length != 0) {
2735 short sense_len = ioasa->auto_sense_length;
2736 int data_size = min_t(u16, le16_to_cpu(sense_len),
2737 SCSI_SENSE_BUFFERSIZE);
2738
2739 memcpy(scsi_cmd->sense_buffer,
2740 ioasa->sense_data,
2741 data_size);
2742 sense_copied = 1;
2743 }
2744
2745 if (RES_IS_GSCSI(res->cfg_entry))
2746 pmcraid_cancel_all(cmd, sense_copied);
2747 else if (sense_copied)
2748 pmcraid_erp_done(cmd);
2749 else
2750 pmcraid_request_sense(cmd);
2751
2752 return 1;
2753
2754 case PMCRAID_IOASC_NR_INIT_CMD_REQUIRED:
2755 break;
2756
2757 default:
2758 if (PMCRAID_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
2759 scsi_cmd->result |= (DID_ERROR << 16);
2760 break;
2761 }
2762 return 0;
2763}
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778static int pmcraid_reset_device(
2779 struct scsi_cmnd *scsi_cmd,
2780 unsigned long timeout,
2781 u8 modifier
2782)
2783{
2784 struct pmcraid_cmd *cmd;
2785 struct pmcraid_instance *pinstance;
2786 struct pmcraid_resource_entry *res;
2787 struct pmcraid_ioarcb *ioarcb;
2788 unsigned long lock_flags;
2789 u32 ioasc;
2790
2791 pinstance =
2792 (struct pmcraid_instance *)scsi_cmd->device->host->hostdata;
2793 res = scsi_cmd->device->hostdata;
2794
2795 if (!res) {
2796 sdev_printk(KERN_ERR, scsi_cmd->device,
2797 "reset_device: NULL resource pointer\n");
2798 return FAILED;
2799 }
2800
2801
2802
2803
2804
2805 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
2806 if (pinstance->ioa_reset_in_progress ||
2807 pinstance->ioa_state == IOA_STATE_DEAD) {
2808 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
2809 return FAILED;
2810 }
2811
2812 res->reset_progress = 1;
2813 pmcraid_info("Resetting %s resource with addr %x\n",
2814 ((modifier & RESET_DEVICE_LUN) ? "LUN" :
2815 ((modifier & RESET_DEVICE_TARGET) ? "TARGET" : "BUS")),
2816 le32_to_cpu(res->cfg_entry.resource_address));
2817
2818
2819 cmd = pmcraid_get_free_cmd(pinstance);
2820
2821 if (cmd == NULL) {
2822 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
2823 pmcraid_err("%s: no cmd blocks are available\n", __func__);
2824 return FAILED;
2825 }
2826
2827 ioarcb = &cmd->ioa_cb->ioarcb;
2828 ioarcb->resource_handle = res->cfg_entry.resource_handle;
2829 ioarcb->request_type = REQ_TYPE_IOACMD;
2830 ioarcb->cdb[0] = PMCRAID_RESET_DEVICE;
2831
2832
2833 if (modifier)
2834 modifier = ENABLE_RESET_MODIFIER | modifier;
2835
2836 ioarcb->cdb[1] = modifier;
2837
2838 init_completion(&cmd->wait_for_completion);
2839 cmd->completion_req = 1;
2840
2841 pmcraid_info("cmd(CDB[0] = %x) for %x with index = %d\n",
2842 cmd->ioa_cb->ioarcb.cdb[0],
2843 le32_to_cpu(cmd->ioa_cb->ioarcb.resource_handle),
2844 le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2);
2845
2846 pmcraid_send_cmd(cmd,
2847 pmcraid_internal_done,
2848 timeout,
2849 pmcraid_timeout_handler);
2850
2851 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
2852
2853
2854
2855
2856
2857 wait_for_completion(&cmd->wait_for_completion);
2858
2859
2860
2861
2862 pmcraid_return_cmd(cmd);
2863 res->reset_progress = 0;
2864 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
2865
2866
2867 return PMCRAID_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
2868}
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886static int _pmcraid_io_done(struct pmcraid_cmd *cmd, int reslen, int ioasc)
2887{
2888 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
2889 int rc = 0;
2890
2891 scsi_set_resid(scsi_cmd, reslen);
2892
2893 pmcraid_info("response(%d) CDB[0] = %x ioasc:result: %x:%x\n",
2894 le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2,
2895 cmd->ioa_cb->ioarcb.cdb[0],
2896 ioasc, scsi_cmd->result);
2897
2898 if (PMCRAID_IOASC_SENSE_KEY(ioasc) != 0)
2899 rc = pmcraid_error_handler(cmd);
2900
2901 if (rc == 0) {
2902 scsi_dma_unmap(scsi_cmd);
2903 scsi_cmd->scsi_done(scsi_cmd);
2904 }
2905
2906 return rc;
2907}
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921static void pmcraid_io_done(struct pmcraid_cmd *cmd)
2922{
2923 u32 ioasc = le32_to_cpu(cmd->ioa_cb->ioasa.ioasc);
2924 u32 reslen = le32_to_cpu(cmd->ioa_cb->ioasa.residual_data_length);
2925
2926 if (_pmcraid_io_done(cmd, reslen, ioasc) == 0)
2927 pmcraid_return_cmd(cmd);
2928}
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938static struct pmcraid_cmd *pmcraid_abort_cmd(struct pmcraid_cmd *cmd)
2939{
2940 struct pmcraid_cmd *cancel_cmd;
2941 struct pmcraid_instance *pinstance;
2942 struct pmcraid_resource_entry *res;
2943
2944 pinstance = (struct pmcraid_instance *)cmd->drv_inst;
2945 res = cmd->scsi_cmd->device->hostdata;
2946
2947 cancel_cmd = pmcraid_get_free_cmd(pinstance);
2948
2949 if (cancel_cmd == NULL) {
2950 pmcraid_err("%s: no cmd blocks are available\n", __func__);
2951 return NULL;
2952 }
2953
2954 pmcraid_prepare_cancel_cmd(cancel_cmd, cmd);
2955
2956 pmcraid_info("aborting command CDB[0]= %x with index = %d\n",
2957 cmd->ioa_cb->ioarcb.cdb[0],
2958 cmd->ioa_cb->ioarcb.response_handle >> 2);
2959
2960 init_completion(&cancel_cmd->wait_for_completion);
2961 cancel_cmd->completion_req = 1;
2962
2963 pmcraid_info("command (%d) CDB[0] = %x for %x\n",
2964 le32_to_cpu(cancel_cmd->ioa_cb->ioarcb.response_handle) >> 2,
2965 cancel_cmd->ioa_cb->ioarcb.cdb[0],
2966 le32_to_cpu(cancel_cmd->ioa_cb->ioarcb.resource_handle));
2967
2968 pmcraid_send_cmd(cancel_cmd,
2969 pmcraid_internal_done,
2970 PMCRAID_INTERNAL_TIMEOUT,
2971 pmcraid_timeout_handler);
2972 return cancel_cmd;
2973}
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984static int pmcraid_abort_complete(struct pmcraid_cmd *cancel_cmd)
2985{
2986 struct pmcraid_resource_entry *res;
2987 u32 ioasc;
2988
2989 wait_for_completion(&cancel_cmd->wait_for_completion);
2990 res = cancel_cmd->res;
2991 cancel_cmd->res = NULL;
2992 ioasc = le32_to_cpu(cancel_cmd->ioa_cb->ioasa.ioasc);
2993
2994
2995
2996
2997
2998
2999 if (ioasc == PMCRAID_IOASC_UA_BUS_WAS_RESET ||
3000 ioasc == PMCRAID_IOASC_NR_SYNC_REQUIRED) {
3001 if (ioasc == PMCRAID_IOASC_NR_SYNC_REQUIRED)
3002 res->sync_reqd = 1;
3003 ioasc = 0;
3004 }
3005
3006
3007 pmcraid_return_cmd(cancel_cmd);
3008 return PMCRAID_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
3009}
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021static int pmcraid_eh_abort_handler(struct scsi_cmnd *scsi_cmd)
3022{
3023 struct pmcraid_instance *pinstance;
3024 struct pmcraid_cmd *cmd;
3025 struct pmcraid_resource_entry *res;
3026 unsigned long host_lock_flags;
3027 unsigned long pending_lock_flags;
3028 struct pmcraid_cmd *cancel_cmd = NULL;
3029 int cmd_found = 0;
3030 int rc = FAILED;
3031
3032 pinstance =
3033 (struct pmcraid_instance *)scsi_cmd->device->host->hostdata;
3034
3035 scmd_printk(KERN_INFO, scsi_cmd,
3036 "I/O command timed out, aborting it.\n");
3037
3038 res = scsi_cmd->device->hostdata;
3039
3040 if (res == NULL)
3041 return rc;
3042
3043
3044
3045
3046
3047
3048 spin_lock_irqsave(pinstance->host->host_lock, host_lock_flags);
3049
3050 if (pinstance->ioa_reset_in_progress ||
3051 pinstance->ioa_state == IOA_STATE_DEAD) {
3052 spin_unlock_irqrestore(pinstance->host->host_lock,
3053 host_lock_flags);
3054 return rc;
3055 }
3056
3057
3058
3059
3060
3061
3062 spin_lock_irqsave(&pinstance->pending_pool_lock, pending_lock_flags);
3063 list_for_each_entry(cmd, &pinstance->pending_cmd_pool, free_list) {
3064
3065 if (cmd->scsi_cmd == scsi_cmd) {
3066 cmd_found = 1;
3067 break;
3068 }
3069 }
3070
3071 spin_unlock_irqrestore(&pinstance->pending_pool_lock,
3072 pending_lock_flags);
3073
3074
3075
3076
3077 if (cmd_found)
3078 cancel_cmd = pmcraid_abort_cmd(cmd);
3079
3080 spin_unlock_irqrestore(pinstance->host->host_lock,
3081 host_lock_flags);
3082
3083 if (cancel_cmd) {
3084 cancel_cmd->res = cmd->scsi_cmd->device->hostdata;
3085 rc = pmcraid_abort_complete(cancel_cmd);
3086 }
3087
3088 return cmd_found ? rc : SUCCESS;
3089}
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105static int pmcraid_eh_device_reset_handler(struct scsi_cmnd *scmd)
3106{
3107 scmd_printk(KERN_INFO, scmd,
3108 "resetting device due to an I/O command timeout.\n");
3109 return pmcraid_reset_device(scmd,
3110 PMCRAID_INTERNAL_TIMEOUT,
3111 RESET_DEVICE_LUN);
3112}
3113
3114static int pmcraid_eh_bus_reset_handler(struct scsi_cmnd *scmd)
3115{
3116 scmd_printk(KERN_INFO, scmd,
3117 "Doing bus reset due to an I/O command timeout.\n");
3118 return pmcraid_reset_device(scmd,
3119 PMCRAID_RESET_BUS_TIMEOUT,
3120 RESET_DEVICE_BUS);
3121}
3122
3123static int pmcraid_eh_target_reset_handler(struct scsi_cmnd *scmd)
3124{
3125 scmd_printk(KERN_INFO, scmd,
3126 "Doing target reset due to an I/O command timeout.\n");
3127 return pmcraid_reset_device(scmd,
3128 PMCRAID_INTERNAL_TIMEOUT,
3129 RESET_DEVICE_TARGET);
3130}
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142static int pmcraid_eh_host_reset_handler(struct scsi_cmnd *scmd)
3143{
3144 unsigned long interval = 10000;
3145 int waits = jiffies_to_msecs(PMCRAID_RESET_HOST_TIMEOUT) / interval;
3146 struct pmcraid_instance *pinstance =
3147 (struct pmcraid_instance *)(scmd->device->host->hostdata);
3148
3149
3150
3151
3152
3153
3154 while (waits--) {
3155 if (atomic_read(&pinstance->outstanding_cmds) <=
3156 PMCRAID_MAX_HCAM_CMD)
3157 return SUCCESS;
3158 msleep(interval);
3159 }
3160
3161 dev_err(&pinstance->pdev->dev,
3162 "Adapter being reset due to an I/O command timeout.\n");
3163 return pmcraid_reset_bringup(pinstance) == 0 ? SUCCESS : FAILED;
3164}
3165
3166
3167
3168
3169
3170
3171
3172
3173static u8 pmcraid_task_attributes(struct scsi_cmnd *scsi_cmd)
3174{
3175 char tag[2];
3176 u8 rc = 0;
3177
3178 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3179 switch (tag[0]) {
3180 case MSG_SIMPLE_TAG:
3181 rc = TASK_TAG_SIMPLE;
3182 break;
3183 case MSG_HEAD_TAG:
3184 rc = TASK_TAG_QUEUE_HEAD;
3185 break;
3186 case MSG_ORDERED_TAG:
3187 rc = TASK_TAG_ORDERED;
3188 break;
3189 };
3190 }
3191
3192 return rc;
3193}
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205struct pmcraid_ioadl_desc *
3206pmcraid_init_ioadls(struct pmcraid_cmd *cmd, int sgcount)
3207{
3208 struct pmcraid_ioadl_desc *ioadl;
3209 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
3210 int ioadl_count = 0;
3211
3212 if (ioarcb->add_cmd_param_length)
3213 ioadl_count = DIV_ROUND_UP(ioarcb->add_cmd_param_length, 16);
3214 ioarcb->ioadl_length =
3215 sizeof(struct pmcraid_ioadl_desc) * sgcount;
3216
3217 if ((sgcount + ioadl_count) > (ARRAY_SIZE(ioarcb->add_data.u.ioadl))) {
3218
3219
3220
3221
3222
3223 ioarcb->ioarcb_bus_addr &= ~(0x1FULL);
3224 ioarcb->ioadl_bus_addr =
3225 cpu_to_le64((cmd->ioa_cb_bus_addr) +
3226 offsetof(struct pmcraid_ioarcb,
3227 add_data.u.ioadl[3]));
3228 ioadl = &ioarcb->add_data.u.ioadl[3];
3229 } else {
3230 ioarcb->ioadl_bus_addr =
3231 cpu_to_le64((cmd->ioa_cb_bus_addr) +
3232 offsetof(struct pmcraid_ioarcb,
3233 add_data.u.ioadl[ioadl_count]));
3234
3235 ioadl = &ioarcb->add_data.u.ioadl[ioadl_count];
3236 ioarcb->ioarcb_bus_addr |=
3237 DIV_ROUND_CLOSEST(sgcount + ioadl_count, 8);
3238 }
3239
3240 return ioadl;
3241}
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254static int pmcraid_build_ioadl(
3255 struct pmcraid_instance *pinstance,
3256 struct pmcraid_cmd *cmd
3257)
3258{
3259 int i, nseg;
3260 struct scatterlist *sglist;
3261
3262 struct scsi_cmnd *scsi_cmd = cmd->scsi_cmd;
3263 struct pmcraid_ioarcb *ioarcb = &(cmd->ioa_cb->ioarcb);
3264 struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl;
3265
3266 u32 length = scsi_bufflen(scsi_cmd);
3267
3268 if (!length)
3269 return 0;
3270
3271 nseg = scsi_dma_map(scsi_cmd);
3272
3273 if (nseg < 0) {
3274 scmd_printk(KERN_ERR, scsi_cmd, "scsi_map_dma failed!\n");
3275 return -1;
3276 } else if (nseg > PMCRAID_MAX_IOADLS) {
3277 scsi_dma_unmap(scsi_cmd);
3278 scmd_printk(KERN_ERR, scsi_cmd,
3279 "sg count is (%d) more than allowed!\n", nseg);
3280 return -1;
3281 }
3282
3283
3284 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE)
3285 ioarcb->request_flags0 |= TRANSFER_DIR_WRITE;
3286
3287 ioarcb->request_flags0 |= NO_LINK_DESCS;
3288 ioarcb->data_transfer_length = cpu_to_le32(length);
3289 ioadl = pmcraid_init_ioadls(cmd, nseg);
3290
3291
3292 scsi_for_each_sg(scsi_cmd, sglist, nseg, i) {
3293 ioadl[i].data_len = cpu_to_le32(sg_dma_len(sglist));
3294 ioadl[i].address = cpu_to_le64(sg_dma_address(sglist));
3295 ioadl[i].flags = 0;
3296 }
3297
3298 ioadl[i - 1].flags = IOADL_FLAGS_LAST_DESC;
3299
3300 return 0;
3301}
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312static void pmcraid_free_sglist(struct pmcraid_sglist *sglist)
3313{
3314 int i;
3315
3316 for (i = 0; i < sglist->num_sg; i++)
3317 __free_pages(sg_page(&(sglist->scatterlist[i])),
3318 sglist->order);
3319
3320 kfree(sglist);
3321}
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333static struct pmcraid_sglist *pmcraid_alloc_sglist(int buflen)
3334{
3335 struct pmcraid_sglist *sglist;
3336 struct scatterlist *scatterlist;
3337 struct page *page;
3338 int num_elem, i, j;
3339 int sg_size;
3340 int order;
3341 int bsize_elem;
3342
3343 sg_size = buflen / (PMCRAID_MAX_IOADLS - 1);
3344 order = (sg_size > 0) ? get_order(sg_size) : 0;
3345 bsize_elem = PAGE_SIZE * (1 << order);
3346
3347
3348 if (buflen % bsize_elem)
3349 num_elem = (buflen / bsize_elem) + 1;
3350 else
3351 num_elem = buflen / bsize_elem;
3352
3353
3354 sglist = kzalloc(sizeof(struct pmcraid_sglist) +
3355 (sizeof(struct scatterlist) * (num_elem - 1)),
3356 GFP_KERNEL);
3357
3358 if (sglist == NULL)
3359 return NULL;
3360
3361 scatterlist = sglist->scatterlist;
3362 sg_init_table(scatterlist, num_elem);
3363 sglist->order = order;
3364 sglist->num_sg = num_elem;
3365 sg_size = buflen;
3366
3367 for (i = 0; i < num_elem; i++) {
3368 page = alloc_pages(GFP_KERNEL|GFP_DMA|__GFP_ZERO, order);
3369 if (!page) {
3370 for (j = i - 1; j >= 0; j--)
3371 __free_pages(sg_page(&scatterlist[j]), order);
3372 kfree(sglist);
3373 return NULL;
3374 }
3375
3376 sg_set_page(&scatterlist[i], page,
3377 sg_size < bsize_elem ? sg_size : bsize_elem, 0);
3378 sg_size -= bsize_elem;
3379 }
3380
3381 return sglist;
3382}
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396static int pmcraid_copy_sglist(
3397 struct pmcraid_sglist *sglist,
3398 unsigned long buffer,
3399 u32 len,
3400 int direction
3401)
3402{
3403 struct scatterlist *scatterlist;
3404 void *kaddr;
3405 int bsize_elem;
3406 int i;
3407 int rc = 0;
3408
3409
3410 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3411
3412 scatterlist = sglist->scatterlist;
3413
3414 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3415 struct page *page = sg_page(&scatterlist[i]);
3416
3417 kaddr = kmap(page);
3418 if (direction == DMA_TO_DEVICE)
3419 rc = __copy_from_user(kaddr,
3420 (void *)buffer,
3421 bsize_elem);
3422 else
3423 rc = __copy_to_user((void *)buffer, kaddr, bsize_elem);
3424
3425 kunmap(page);
3426
3427 if (rc) {
3428 pmcraid_err("failed to copy user data into sg list\n");
3429 return -EFAULT;
3430 }
3431
3432 scatterlist[i].length = bsize_elem;
3433 }
3434
3435 if (len % bsize_elem) {
3436 struct page *page = sg_page(&scatterlist[i]);
3437
3438 kaddr = kmap(page);
3439
3440 if (direction == DMA_TO_DEVICE)
3441 rc = __copy_from_user(kaddr,
3442 (void *)buffer,
3443 len % bsize_elem);
3444 else
3445 rc = __copy_to_user((void *)buffer,
3446 kaddr,
3447 len % bsize_elem);
3448
3449 kunmap(page);
3450
3451 scatterlist[i].length = len % bsize_elem;
3452 }
3453
3454 if (rc) {
3455 pmcraid_err("failed to copy user data into sg list\n");
3456 rc = -EFAULT;
3457 }
3458
3459 return rc;
3460}
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476static int pmcraid_queuecommand_lck(
3477 struct scsi_cmnd *scsi_cmd,
3478 void (*done) (struct scsi_cmnd *)
3479)
3480{
3481 struct pmcraid_instance *pinstance;
3482 struct pmcraid_resource_entry *res;
3483 struct pmcraid_ioarcb *ioarcb;
3484 struct pmcraid_cmd *cmd;
3485 u32 fw_version;
3486 int rc = 0;
3487
3488 pinstance =
3489 (struct pmcraid_instance *)scsi_cmd->device->host->hostdata;
3490 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
3491 scsi_cmd->scsi_done = done;
3492 res = scsi_cmd->device->hostdata;
3493 scsi_cmd->result = (DID_OK << 16);
3494
3495
3496
3497
3498 if (pinstance->ioa_state == IOA_STATE_DEAD) {
3499 pmcraid_info("IOA is dead, but queuecommand is scheduled\n");
3500 scsi_cmd->result = (DID_NO_CONNECT << 16);
3501 scsi_cmd->scsi_done(scsi_cmd);
3502 return 0;
3503 }
3504
3505
3506 if (pinstance->ioa_reset_in_progress)
3507 return SCSI_MLQUEUE_HOST_BUSY;
3508
3509
3510
3511
3512 if (scsi_cmd->cmnd[0] == SYNCHRONIZE_CACHE) {
3513 pmcraid_info("SYNC_CACHE(0x35), completing in driver itself\n");
3514 scsi_cmd->scsi_done(scsi_cmd);
3515 return 0;
3516 }
3517
3518
3519 cmd = pmcraid_get_free_cmd(pinstance);
3520
3521 if (cmd == NULL) {
3522 pmcraid_err("free command block is not available\n");
3523 return SCSI_MLQUEUE_HOST_BUSY;
3524 }
3525
3526 cmd->scsi_cmd = scsi_cmd;
3527 ioarcb = &(cmd->ioa_cb->ioarcb);
3528 memcpy(ioarcb->cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3529 ioarcb->resource_handle = res->cfg_entry.resource_handle;
3530 ioarcb->request_type = REQ_TYPE_SCSI;
3531
3532
3533
3534
3535
3536
3537 ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
3538 pinstance->num_hrrq;
3539 cmd->cmd_done = pmcraid_io_done;
3540
3541 if (RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry)) {
3542 if (scsi_cmd->underflow == 0)
3543 ioarcb->request_flags0 |= INHIBIT_UL_CHECK;
3544
3545 if (res->sync_reqd) {
3546 ioarcb->request_flags0 |= SYNC_COMPLETE;
3547 res->sync_reqd = 0;
3548 }
3549
3550 ioarcb->request_flags0 |= NO_LINK_DESCS;
3551 ioarcb->request_flags1 |= pmcraid_task_attributes(scsi_cmd);
3552
3553 if (RES_IS_GSCSI(res->cfg_entry))
3554 ioarcb->request_flags1 |= DELAY_AFTER_RESET;
3555 }
3556
3557 rc = pmcraid_build_ioadl(pinstance, cmd);
3558
3559 pmcraid_info("command (%d) CDB[0] = %x for %x:%x:%x:%x\n",
3560 le32_to_cpu(ioarcb->response_handle) >> 2,
3561 scsi_cmd->cmnd[0], pinstance->host->unique_id,
3562 RES_IS_VSET(res->cfg_entry) ? PMCRAID_VSET_BUS_ID :
3563 PMCRAID_PHYS_BUS_ID,
3564 RES_IS_VSET(res->cfg_entry) ?
3565 (fw_version <= PMCRAID_FW_VERSION_1 ?
3566 res->cfg_entry.unique_flags1 :
3567 res->cfg_entry.array_id & 0xFF) :
3568 RES_TARGET(res->cfg_entry.resource_address),
3569 RES_LUN(res->cfg_entry.resource_address));
3570
3571 if (likely(rc == 0)) {
3572 _pmcraid_fire_command(cmd);
3573 } else {
3574 pmcraid_err("queuecommand could not build ioadl\n");
3575 pmcraid_return_cmd(cmd);
3576 rc = SCSI_MLQUEUE_HOST_BUSY;
3577 }
3578
3579 return rc;
3580}
3581
3582static DEF_SCSI_QCMD(pmcraid_queuecommand)
3583
3584
3585
3586
3587static int pmcraid_chr_open(struct inode *inode, struct file *filep)
3588{
3589 struct pmcraid_instance *pinstance;
3590
3591 if (!capable(CAP_SYS_ADMIN))
3592 return -EACCES;
3593
3594
3595 pinstance = container_of(inode->i_cdev, struct pmcraid_instance, cdev);
3596 filep->private_data = pinstance;
3597
3598 return 0;
3599}
3600
3601
3602
3603
3604static int pmcraid_chr_release(struct inode *inode, struct file *filep)
3605{
3606 struct pmcraid_instance *pinstance = filep->private_data;
3607
3608 filep->private_data = NULL;
3609 fasync_helper(-1, filep, 0, &pinstance->aen_queue);
3610
3611 return 0;
3612}
3613
3614
3615
3616
3617
3618
3619
3620static int pmcraid_chr_fasync(int fd, struct file *filep, int mode)
3621{
3622 struct pmcraid_instance *pinstance;
3623 int rc;
3624
3625 pinstance = filep->private_data;
3626 mutex_lock(&pinstance->aen_queue_lock);
3627 rc = fasync_helper(fd, filep, mode, &pinstance->aen_queue);
3628 mutex_unlock(&pinstance->aen_queue_lock);
3629
3630 return rc;
3631}
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645static int pmcraid_build_passthrough_ioadls(
3646 struct pmcraid_cmd *cmd,
3647 int buflen,
3648 int direction
3649)
3650{
3651 struct pmcraid_sglist *sglist = NULL;
3652 struct scatterlist *sg = NULL;
3653 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
3654 struct pmcraid_ioadl_desc *ioadl;
3655 int i;
3656
3657 sglist = pmcraid_alloc_sglist(buflen);
3658
3659 if (!sglist) {
3660 pmcraid_err("can't allocate memory for passthrough SGls\n");
3661 return -ENOMEM;
3662 }
3663
3664 sglist->num_dma_sg = pci_map_sg(cmd->drv_inst->pdev,
3665 sglist->scatterlist,
3666 sglist->num_sg, direction);
3667
3668 if (!sglist->num_dma_sg || sglist->num_dma_sg > PMCRAID_MAX_IOADLS) {
3669 dev_err(&cmd->drv_inst->pdev->dev,
3670 "Failed to map passthrough buffer!\n");
3671 pmcraid_free_sglist(sglist);
3672 return -EIO;
3673 }
3674
3675 cmd->sglist = sglist;
3676 ioarcb->request_flags0 |= NO_LINK_DESCS;
3677
3678 ioadl = pmcraid_init_ioadls(cmd, sglist->num_dma_sg);
3679
3680
3681 for_each_sg(sglist->scatterlist, sg, sglist->num_dma_sg, i) {
3682 ioadl[i].data_len = cpu_to_le32(sg_dma_len(sg));
3683 ioadl[i].address = cpu_to_le64(sg_dma_address(sg));
3684 ioadl[i].flags = 0;
3685 }
3686
3687
3688 ioadl[i - 1].flags = IOADL_FLAGS_LAST_DESC;
3689
3690 return 0;
3691}
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704static void pmcraid_release_passthrough_ioadls(
3705 struct pmcraid_cmd *cmd,
3706 int buflen,
3707 int direction
3708)
3709{
3710 struct pmcraid_sglist *sglist = cmd->sglist;
3711
3712 if (buflen > 0) {
3713 pci_unmap_sg(cmd->drv_inst->pdev,
3714 sglist->scatterlist,
3715 sglist->num_sg,
3716 direction);
3717 pmcraid_free_sglist(sglist);
3718 cmd->sglist = NULL;
3719 }
3720}
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732static long pmcraid_ioctl_passthrough(
3733 struct pmcraid_instance *pinstance,
3734 unsigned int ioctl_cmd,
3735 unsigned int buflen,
3736 unsigned long arg
3737)
3738{
3739 struct pmcraid_passthrough_ioctl_buffer *buffer;
3740 struct pmcraid_ioarcb *ioarcb;
3741 struct pmcraid_cmd *cmd;
3742 struct pmcraid_cmd *cancel_cmd;
3743 unsigned long request_buffer;
3744 unsigned long request_offset;
3745 unsigned long lock_flags;
3746 void *ioasa;
3747 u32 ioasc;
3748 int request_size;
3749 int buffer_size;
3750 u8 access, direction;
3751 int rc = 0;
3752
3753
3754 if (pinstance->ioa_reset_in_progress) {
3755 rc = wait_event_interruptible_timeout(
3756 pinstance->reset_wait_q,
3757 !pinstance->ioa_reset_in_progress,
3758 msecs_to_jiffies(10000));
3759
3760 if (!rc)
3761 return -ETIMEDOUT;
3762 else if (rc < 0)
3763 return -ERESTARTSYS;
3764 }
3765
3766
3767 if (pinstance->ioa_state != IOA_STATE_OPERATIONAL) {
3768 pmcraid_err("IOA is not operational\n");
3769 return -ENOTTY;
3770 }
3771
3772 buffer_size = sizeof(struct pmcraid_passthrough_ioctl_buffer);
3773 buffer = kmalloc(buffer_size, GFP_KERNEL);
3774
3775 if (!buffer) {
3776 pmcraid_err("no memory for passthrough buffer\n");
3777 return -ENOMEM;
3778 }
3779
3780 request_offset =
3781 offsetof(struct pmcraid_passthrough_ioctl_buffer, request_buffer);
3782
3783 request_buffer = arg + request_offset;
3784
3785 rc = __copy_from_user(buffer,
3786 (struct pmcraid_passthrough_ioctl_buffer *) arg,
3787 sizeof(struct pmcraid_passthrough_ioctl_buffer));
3788
3789 ioasa =
3790 (void *)(arg +
3791 offsetof(struct pmcraid_passthrough_ioctl_buffer, ioasa));
3792
3793 if (rc) {
3794 pmcraid_err("ioctl: can't copy passthrough buffer\n");
3795 rc = -EFAULT;
3796 goto out_free_buffer;
3797 }
3798
3799 request_size = buffer->ioarcb.data_transfer_length;
3800
3801 if (buffer->ioarcb.request_flags0 & TRANSFER_DIR_WRITE) {
3802 access = VERIFY_READ;
3803 direction = DMA_TO_DEVICE;
3804 } else {
3805 access = VERIFY_WRITE;
3806 direction = DMA_FROM_DEVICE;
3807 }
3808
3809 if (request_size > 0) {
3810 rc = access_ok(access, arg, request_offset + request_size);
3811
3812 if (!rc) {
3813 rc = -EFAULT;
3814 goto out_free_buffer;
3815 }
3816 } else if (request_size < 0) {
3817 rc = -EINVAL;
3818 goto out_free_buffer;
3819 }
3820
3821
3822 if (buffer->ioarcb.add_cmd_param_length > PMCRAID_ADD_CMD_PARAM_LEN) {
3823 rc = -EINVAL;
3824 goto out_free_buffer;
3825 }
3826
3827 cmd = pmcraid_get_free_cmd(pinstance);
3828
3829 if (!cmd) {
3830 pmcraid_err("free command block is not available\n");
3831 rc = -ENOMEM;
3832 goto out_free_buffer;
3833 }
3834
3835 cmd->scsi_cmd = NULL;
3836 ioarcb = &(cmd->ioa_cb->ioarcb);
3837
3838
3839 ioarcb->resource_handle = buffer->ioarcb.resource_handle;
3840 ioarcb->data_transfer_length = buffer->ioarcb.data_transfer_length;
3841 ioarcb->cmd_timeout = buffer->ioarcb.cmd_timeout;
3842 ioarcb->request_type = buffer->ioarcb.request_type;
3843 ioarcb->request_flags0 = buffer->ioarcb.request_flags0;
3844 ioarcb->request_flags1 = buffer->ioarcb.request_flags1;
3845 memcpy(ioarcb->cdb, buffer->ioarcb.cdb, PMCRAID_MAX_CDB_LEN);
3846
3847 if (buffer->ioarcb.add_cmd_param_length) {
3848 ioarcb->add_cmd_param_length =
3849 buffer->ioarcb.add_cmd_param_length;
3850 ioarcb->add_cmd_param_offset =
3851 buffer->ioarcb.add_cmd_param_offset;
3852 memcpy(ioarcb->add_data.u.add_cmd_params,
3853 buffer->ioarcb.add_data.u.add_cmd_params,
3854 buffer->ioarcb.add_cmd_param_length);
3855 }
3856
3857
3858
3859
3860
3861
3862 ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
3863 pinstance->num_hrrq;
3864
3865 if (request_size) {
3866 rc = pmcraid_build_passthrough_ioadls(cmd,
3867 request_size,
3868 direction);
3869 if (rc) {
3870 pmcraid_err("couldn't build passthrough ioadls\n");
3871 goto out_free_buffer;
3872 }
3873 } else if (request_size < 0) {
3874 rc = -EINVAL;
3875 goto out_free_buffer;
3876 }
3877
3878
3879
3880
3881 if (direction == DMA_TO_DEVICE && request_size > 0) {
3882 rc = pmcraid_copy_sglist(cmd->sglist,
3883 request_buffer,
3884 request_size,
3885 direction);
3886 if (rc) {
3887 pmcraid_err("failed to copy user buffer\n");
3888 goto out_free_sglist;
3889 }
3890 }
3891
3892
3893
3894
3895 cmd->cmd_done = pmcraid_internal_done;
3896 init_completion(&cmd->wait_for_completion);
3897 cmd->completion_req = 1;
3898
3899 pmcraid_info("command(%d) (CDB[0] = %x) for %x\n",
3900 le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle) >> 2,
3901 cmd->ioa_cb->ioarcb.cdb[0],
3902 le32_to_cpu(cmd->ioa_cb->ioarcb.resource_handle));
3903
3904 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
3905 _pmcraid_fire_command(cmd);
3906 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
3907
3908
3909
3910
3911
3912
3913
3914 buffer->ioarcb.cmd_timeout = 0;
3915
3916
3917
3918
3919
3920 if (buffer->ioarcb.cmd_timeout == 0) {
3921 wait_for_completion(&cmd->wait_for_completion);
3922 } else if (!wait_for_completion_timeout(
3923 &cmd->wait_for_completion,
3924 msecs_to_jiffies(buffer->ioarcb.cmd_timeout * 1000))) {
3925
3926 pmcraid_info("aborting cmd %d (CDB[0] = %x) due to timeout\n",
3927 le32_to_cpu(cmd->ioa_cb->ioarcb.response_handle >> 2),
3928 cmd->ioa_cb->ioarcb.cdb[0]);
3929
3930 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
3931 cancel_cmd = pmcraid_abort_cmd(cmd);
3932 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
3933
3934 if (cancel_cmd) {
3935 wait_for_completion(&cancel_cmd->wait_for_completion);
3936 ioasc = cancel_cmd->ioa_cb->ioasa.ioasc;
3937 pmcraid_return_cmd(cancel_cmd);
3938
3939
3940
3941
3942
3943
3944
3945 if (ioasc == PMCRAID_IOASC_IOA_WAS_RESET ||
3946 PMCRAID_IOASC_SENSE_KEY(ioasc) == 0x00) {
3947 if (ioasc != PMCRAID_IOASC_GC_IOARCB_NOTFOUND)
3948 rc = -ETIMEDOUT;
3949 goto out_handle_response;
3950 }
3951 }
3952
3953
3954
3955
3956
3957 if (!wait_for_completion_timeout(
3958 &cmd->wait_for_completion,
3959 msecs_to_jiffies(150 * 1000))) {
3960 pmcraid_reset_bringup(cmd->drv_inst);
3961 rc = -ETIMEDOUT;
3962 }
3963 }
3964
3965out_handle_response:
3966
3967
3968
3969
3970 if (copy_to_user(ioasa, &cmd->ioa_cb->ioasa,
3971 sizeof(struct pmcraid_ioasa))) {
3972 pmcraid_err("failed to copy ioasa buffer to user\n");
3973 rc = -EFAULT;
3974 }
3975
3976
3977
3978
3979 else if (direction == DMA_FROM_DEVICE && request_size > 0) {
3980 rc = pmcraid_copy_sglist(cmd->sglist,
3981 request_buffer,
3982 request_size,
3983 direction);
3984 if (rc) {
3985 pmcraid_err("failed to copy user buffer\n");
3986 rc = -EFAULT;
3987 }
3988 }
3989
3990out_free_sglist:
3991 pmcraid_release_passthrough_ioadls(cmd, request_size, direction);
3992 pmcraid_return_cmd(cmd);
3993
3994out_free_buffer:
3995 kfree(buffer);
3996
3997 return rc;
3998}
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014static long pmcraid_ioctl_driver(
4015 struct pmcraid_instance *pinstance,
4016 unsigned int cmd,
4017 unsigned int buflen,
4018 void __user *user_buffer
4019)
4020{
4021 int rc = -ENOSYS;
4022
4023 if (!access_ok(VERIFY_READ, user_buffer, _IOC_SIZE(cmd))) {
4024 pmcraid_err("ioctl_driver: access fault in request buffer\n");
4025 return -EFAULT;
4026 }
4027
4028 switch (cmd) {
4029 case PMCRAID_IOCTL_RESET_ADAPTER:
4030 pmcraid_reset_bringup(pinstance);
4031 rc = 0;
4032 break;
4033
4034 default:
4035 break;
4036 }
4037
4038 return rc;
4039}
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053static int pmcraid_check_ioctl_buffer(
4054 int cmd,
4055 void __user *arg,
4056 struct pmcraid_ioctl_header *hdr
4057)
4058{
4059 int rc = 0;
4060 int access = VERIFY_READ;
4061
4062 if (copy_from_user(hdr, arg, sizeof(struct pmcraid_ioctl_header))) {
4063 pmcraid_err("couldn't copy ioctl header from user buffer\n");
4064 return -EFAULT;
4065 }
4066
4067
4068 rc = memcmp(hdr->signature,
4069 PMCRAID_IOCTL_SIGNATURE,
4070 sizeof(hdr->signature));
4071 if (rc) {
4072 pmcraid_err("signature verification failed\n");
4073 return -EINVAL;
4074 }
4075
4076
4077 if ((_IOC_DIR(cmd) & _IOC_READ) == _IOC_READ)
4078 access = VERIFY_WRITE;
4079
4080 rc = access_ok(access,
4081 (arg + sizeof(struct pmcraid_ioctl_header)),
4082 hdr->buffer_length);
4083 if (!rc) {
4084 pmcraid_err("access failed for user buffer of size %d\n",
4085 hdr->buffer_length);
4086 return -EFAULT;
4087 }
4088
4089 return 0;
4090}
4091
4092
4093
4094
4095static long pmcraid_chr_ioctl(
4096 struct file *filep,
4097 unsigned int cmd,
4098 unsigned long arg
4099)
4100{
4101 struct pmcraid_instance *pinstance = NULL;
4102 struct pmcraid_ioctl_header *hdr = NULL;
4103 int retval = -ENOTTY;
4104
4105 hdr = kmalloc(sizeof(struct pmcraid_ioctl_header), GFP_KERNEL);
4106
4107 if (!hdr) {
4108 pmcraid_err("failed to allocate memory for ioctl header\n");
4109 return -ENOMEM;
4110 }
4111
4112 retval = pmcraid_check_ioctl_buffer(cmd, (void *)arg, hdr);
4113
4114 if (retval) {
4115 pmcraid_info("chr_ioctl: header check failed\n");
4116 kfree(hdr);
4117 return retval;
4118 }
4119
4120 pinstance = filep->private_data;
4121
4122 if (!pinstance) {
4123 pmcraid_info("adapter instance is not found\n");
4124 kfree(hdr);
4125 return -ENOTTY;
4126 }
4127
4128 switch (_IOC_TYPE(cmd)) {
4129
4130 case PMCRAID_PASSTHROUGH_IOCTL:
4131
4132
4133
4134 if (cmd == PMCRAID_IOCTL_DOWNLOAD_MICROCODE)
4135 scsi_block_requests(pinstance->host);
4136
4137 retval = pmcraid_ioctl_passthrough(pinstance,
4138 cmd,
4139 hdr->buffer_length,
4140 arg);
4141
4142 if (cmd == PMCRAID_IOCTL_DOWNLOAD_MICROCODE)
4143 scsi_unblock_requests(pinstance->host);
4144 break;
4145
4146 case PMCRAID_DRIVER_IOCTL:
4147 arg += sizeof(struct pmcraid_ioctl_header);
4148 retval = pmcraid_ioctl_driver(pinstance,
4149 cmd,
4150 hdr->buffer_length,
4151 (void __user *)arg);
4152 break;
4153
4154 default:
4155 retval = -ENOTTY;
4156 break;
4157 }
4158
4159 kfree(hdr);
4160
4161 return retval;
4162}
4163
4164
4165
4166
4167static const struct file_operations pmcraid_fops = {
4168 .owner = THIS_MODULE,
4169 .open = pmcraid_chr_open,
4170 .release = pmcraid_chr_release,
4171 .fasync = pmcraid_chr_fasync,
4172 .unlocked_ioctl = pmcraid_chr_ioctl,
4173#ifdef CONFIG_COMPAT
4174 .compat_ioctl = pmcraid_chr_ioctl,
4175#endif
4176 .llseek = noop_llseek,
4177};
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190static ssize_t pmcraid_show_log_level(
4191 struct device *dev,
4192 struct device_attribute *attr,
4193 char *buf)
4194{
4195 struct Scsi_Host *shost = class_to_shost(dev);
4196 struct pmcraid_instance *pinstance =
4197 (struct pmcraid_instance *)shost->hostdata;
4198 return snprintf(buf, PAGE_SIZE, "%d\n", pinstance->current_log_level);
4199}
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210static ssize_t pmcraid_store_log_level(
4211 struct device *dev,
4212 struct device_attribute *attr,
4213 const char *buf,
4214 size_t count
4215)
4216{
4217 struct Scsi_Host *shost;
4218 struct pmcraid_instance *pinstance;
4219 unsigned long val;
4220
4221 if (strict_strtoul(buf, 10, &val))
4222 return -EINVAL;
4223
4224 if (val > 2)
4225 return -EINVAL;
4226
4227 shost = class_to_shost(dev);
4228 pinstance = (struct pmcraid_instance *)shost->hostdata;
4229 pinstance->current_log_level = val;
4230
4231 return strlen(buf);
4232}
4233
4234static struct device_attribute pmcraid_log_level_attr = {
4235 .attr = {
4236 .name = "log_level",
4237 .mode = S_IRUGO | S_IWUSR,
4238 },
4239 .show = pmcraid_show_log_level,
4240 .store = pmcraid_store_log_level,
4241};
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251static ssize_t pmcraid_show_drv_version(
4252 struct device *dev,
4253 struct device_attribute *attr,
4254 char *buf
4255)
4256{
4257 return snprintf(buf, PAGE_SIZE, "version: %s\n",
4258 PMCRAID_DRIVER_VERSION);
4259}
4260
4261static struct device_attribute pmcraid_driver_version_attr = {
4262 .attr = {
4263 .name = "drv_version",
4264 .mode = S_IRUGO,
4265 },
4266 .show = pmcraid_show_drv_version,
4267};
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277static ssize_t pmcraid_show_adapter_id(
4278 struct device *dev,
4279 struct device_attribute *attr,
4280 char *buf
4281)
4282{
4283 struct Scsi_Host *shost = class_to_shost(dev);
4284 struct pmcraid_instance *pinstance =
4285 (struct pmcraid_instance *)shost->hostdata;
4286 u32 adapter_id = (pinstance->pdev->bus->number << 8) |
4287 pinstance->pdev->devfn;
4288 u32 aen_group = pmcraid_event_family.id;
4289
4290 return snprintf(buf, PAGE_SIZE,
4291 "adapter id: %d\nminor: %d\naen group: %d\n",
4292 adapter_id, MINOR(pinstance->cdev.dev), aen_group);
4293}
4294
4295static struct device_attribute pmcraid_adapter_id_attr = {
4296 .attr = {
4297 .name = "adapter_id",
4298 .mode = S_IRUGO | S_IWUSR,
4299 },
4300 .show = pmcraid_show_adapter_id,
4301};
4302
4303static struct device_attribute *pmcraid_host_attrs[] = {
4304 &pmcraid_log_level_attr,
4305 &pmcraid_driver_version_attr,
4306 &pmcraid_adapter_id_attr,
4307 NULL,
4308};
4309
4310
4311
4312static struct scsi_host_template pmcraid_host_template = {
4313 .module = THIS_MODULE,
4314 .name = PMCRAID_DRIVER_NAME,
4315 .queuecommand = pmcraid_queuecommand,
4316 .eh_abort_handler = pmcraid_eh_abort_handler,
4317 .eh_bus_reset_handler = pmcraid_eh_bus_reset_handler,
4318 .eh_target_reset_handler = pmcraid_eh_target_reset_handler,
4319 .eh_device_reset_handler = pmcraid_eh_device_reset_handler,
4320 .eh_host_reset_handler = pmcraid_eh_host_reset_handler,
4321
4322 .slave_alloc = pmcraid_slave_alloc,
4323 .slave_configure = pmcraid_slave_configure,
4324 .slave_destroy = pmcraid_slave_destroy,
4325 .change_queue_depth = pmcraid_change_queue_depth,
4326 .change_queue_type = pmcraid_change_queue_type,
4327 .can_queue = PMCRAID_MAX_IO_CMD,
4328 .this_id = -1,
4329 .sg_tablesize = PMCRAID_MAX_IOADLS,
4330 .max_sectors = PMCRAID_IOA_MAX_SECTORS,
4331 .cmd_per_lun = PMCRAID_MAX_CMD_PER_LUN,
4332 .use_clustering = ENABLE_CLUSTERING,
4333 .shost_attrs = pmcraid_host_attrs,
4334 .proc_name = PMCRAID_DRIVER_NAME
4335};
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346static irqreturn_t pmcraid_isr_msix(int irq, void *dev_id)
4347{
4348 struct pmcraid_isr_param *hrrq_vector;
4349 struct pmcraid_instance *pinstance;
4350 unsigned long lock_flags;
4351 u32 intrs_val;
4352 int hrrq_id;
4353
4354 hrrq_vector = (struct pmcraid_isr_param *)dev_id;
4355 hrrq_id = hrrq_vector->hrrq_id;
4356 pinstance = hrrq_vector->drv_inst;
4357
4358 if (!hrrq_id) {
4359
4360 intrs_val = pmcraid_read_interrupts(pinstance);
4361 if (intrs_val &&
4362 ((ioread32(pinstance->int_regs.host_ioa_interrupt_reg)
4363 & DOORBELL_INTR_MSIX_CLR) == 0)) {
4364
4365
4366
4367
4368
4369 if (intrs_val & PMCRAID_ERROR_INTERRUPTS) {
4370 if (intrs_val & INTRS_IOA_UNIT_CHECK)
4371 pinstance->ioa_unit_check = 1;
4372
4373 pmcraid_err("ISR: error interrupts: %x \
4374 initiating reset\n", intrs_val);
4375 spin_lock_irqsave(pinstance->host->host_lock,
4376 lock_flags);
4377 pmcraid_initiate_reset(pinstance);
4378 spin_unlock_irqrestore(
4379 pinstance->host->host_lock,
4380 lock_flags);
4381 }
4382
4383
4384
4385
4386 if (intrs_val & INTRS_TRANSITION_TO_OPERATIONAL)
4387 pmcraid_clr_trans_op(pinstance);
4388
4389
4390
4391
4392
4393 iowrite32(DOORBELL_INTR_MSIX_CLR,
4394 pinstance->int_regs.host_ioa_interrupt_reg);
4395 ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
4396
4397
4398 }
4399 }
4400
4401 tasklet_schedule(&(pinstance->isr_tasklet[hrrq_id]));
4402
4403 return IRQ_HANDLED;
4404}
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415static irqreturn_t pmcraid_isr(int irq, void *dev_id)
4416{
4417 struct pmcraid_isr_param *hrrq_vector;
4418 struct pmcraid_instance *pinstance;
4419 u32 intrs;
4420 unsigned long lock_flags;
4421 int hrrq_id = 0;
4422
4423
4424
4425
4426 if (!dev_id) {
4427 printk(KERN_INFO "%s(): NULL host pointer\n", __func__);
4428 return IRQ_NONE;
4429 }
4430 hrrq_vector = (struct pmcraid_isr_param *)dev_id;
4431 pinstance = hrrq_vector->drv_inst;
4432
4433 intrs = pmcraid_read_interrupts(pinstance);
4434
4435 if (unlikely((intrs & PMCRAID_PCI_INTERRUPTS) == 0))
4436 return IRQ_NONE;
4437
4438
4439
4440
4441
4442 if (intrs & PMCRAID_ERROR_INTERRUPTS) {
4443
4444 if (intrs & INTRS_IOA_UNIT_CHECK)
4445 pinstance->ioa_unit_check = 1;
4446
4447 iowrite32(intrs,
4448 pinstance->int_regs.ioa_host_interrupt_clr_reg);
4449 pmcraid_err("ISR: error interrupts: %x initiating reset\n",
4450 intrs);
4451 intrs = ioread32(
4452 pinstance->int_regs.ioa_host_interrupt_clr_reg);
4453 spin_lock_irqsave(pinstance->host->host_lock, lock_flags);
4454 pmcraid_initiate_reset(pinstance);
4455 spin_unlock_irqrestore(pinstance->host->host_lock, lock_flags);
4456 } else {
4457
4458
4459
4460
4461 if (intrs & INTRS_TRANSITION_TO_OPERATIONAL) {
4462 pmcraid_clr_trans_op(pinstance);
4463 } else {
4464 iowrite32(intrs,
4465 pinstance->int_regs.ioa_host_interrupt_clr_reg);
4466 ioread32(
4467 pinstance->int_regs.ioa_host_interrupt_clr_reg);
4468
4469 tasklet_schedule(
4470 &(pinstance->isr_tasklet[hrrq_id]));
4471 }
4472 }
4473
4474 return IRQ_HANDLED;
4475}
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487static void pmcraid_worker_function(struct work_struct *workp)
4488{
4489 struct pmcraid_instance *pinstance;
4490 struct pmcraid_resource_entry *res;
4491 struct pmcraid_resource_entry *temp;
4492 struct scsi_device *sdev;
4493 unsigned long lock_flags;
4494 unsigned long host_lock_flags;
4495 u16 fw_version;
4496 u8 bus, target, lun;
4497
4498 pinstance = container_of(workp, struct pmcraid_instance, worker_q);
4499
4500 if (!atomic_read(&pinstance->expose_resources))
4501 return;
4502
4503 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
4504
4505 spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
4506 list_for_each_entry_safe(res, temp, &pinstance->used_res_q, queue) {
4507
4508 if (res->change_detected == RES_CHANGE_DEL && res->scsi_dev) {
4509 sdev = res->scsi_dev;
4510
4511
4512
4513
4514 spin_lock_irqsave(pinstance->host->host_lock,
4515 host_lock_flags);
4516 if (!scsi_device_get(sdev)) {
4517 spin_unlock_irqrestore(
4518 pinstance->host->host_lock,
4519 host_lock_flags);
4520 pmcraid_info("deleting %x from midlayer\n",
4521 res->cfg_entry.resource_address);
4522 list_move_tail(&res->queue,
4523 &pinstance->free_res_q);
4524 spin_unlock_irqrestore(
4525 &pinstance->resource_lock,
4526 lock_flags);
4527 scsi_remove_device(sdev);
4528 scsi_device_put(sdev);
4529 spin_lock_irqsave(&pinstance->resource_lock,
4530 lock_flags);
4531 res->change_detected = 0;
4532 } else {
4533 spin_unlock_irqrestore(
4534 pinstance->host->host_lock,
4535 host_lock_flags);
4536 }
4537 }
4538 }
4539
4540 list_for_each_entry(res, &pinstance->used_res_q, queue) {
4541
4542 if (res->change_detected == RES_CHANGE_ADD) {
4543
4544 if (!pmcraid_expose_resource(fw_version,
4545 &res->cfg_entry))
4546 continue;
4547
4548 if (RES_IS_VSET(res->cfg_entry)) {
4549 bus = PMCRAID_VSET_BUS_ID;
4550 if (fw_version <= PMCRAID_FW_VERSION_1)
4551 target = res->cfg_entry.unique_flags1;
4552 else
4553 target = res->cfg_entry.array_id & 0xFF;
4554 lun = PMCRAID_VSET_LUN_ID;
4555 } else {
4556 bus = PMCRAID_PHYS_BUS_ID;
4557 target =
4558 RES_TARGET(
4559 res->cfg_entry.resource_address);
4560 lun = RES_LUN(res->cfg_entry.resource_address);
4561 }
4562
4563 res->change_detected = 0;
4564 spin_unlock_irqrestore(&pinstance->resource_lock,
4565 lock_flags);
4566 scsi_add_device(pinstance->host, bus, target, lun);
4567 spin_lock_irqsave(&pinstance->resource_lock,
4568 lock_flags);
4569 }
4570 }
4571
4572 spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
4573}
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583static void pmcraid_tasklet_function(unsigned long instance)
4584{
4585 struct pmcraid_isr_param *hrrq_vector;
4586 struct pmcraid_instance *pinstance;
4587 unsigned long hrrq_lock_flags;
4588 unsigned long pending_lock_flags;
4589 unsigned long host_lock_flags;
4590 spinlock_t *lockp;
4591 int id;
4592 __le32 resp;
4593
4594 hrrq_vector = (struct pmcraid_isr_param *)instance;
4595 pinstance = hrrq_vector->drv_inst;
4596 id = hrrq_vector->hrrq_id;
4597 lockp = &(pinstance->hrrq_lock[id]);
4598
4599
4600
4601
4602
4603
4604
4605 spin_lock_irqsave(lockp, hrrq_lock_flags);
4606
4607 resp = le32_to_cpu(*(pinstance->hrrq_curr[id]));
4608
4609 while ((resp & HRRQ_TOGGLE_BIT) ==
4610 pinstance->host_toggle_bit[id]) {
4611
4612 int cmd_index = resp >> 2;
4613 struct pmcraid_cmd *cmd = NULL;
4614
4615 if (pinstance->hrrq_curr[id] < pinstance->hrrq_end[id]) {
4616 pinstance->hrrq_curr[id]++;
4617 } else {
4618 pinstance->hrrq_curr[id] = pinstance->hrrq_start[id];
4619 pinstance->host_toggle_bit[id] ^= 1u;
4620 }
4621
4622 if (cmd_index >= PMCRAID_MAX_CMD) {
4623
4624 pmcraid_err("Invalid response handle %d\n", cmd_index);
4625 resp = le32_to_cpu(*(pinstance->hrrq_curr[id]));
4626 continue;
4627 }
4628
4629 cmd = pinstance->cmd_list[cmd_index];
4630 spin_unlock_irqrestore(lockp, hrrq_lock_flags);
4631
4632 spin_lock_irqsave(&pinstance->pending_pool_lock,
4633 pending_lock_flags);
4634 list_del(&cmd->free_list);
4635 spin_unlock_irqrestore(&pinstance->pending_pool_lock,
4636 pending_lock_flags);
4637 del_timer(&cmd->timer);
4638 atomic_dec(&pinstance->outstanding_cmds);
4639
4640 if (cmd->cmd_done == pmcraid_ioa_reset) {
4641 spin_lock_irqsave(pinstance->host->host_lock,
4642 host_lock_flags);
4643 cmd->cmd_done(cmd);
4644 spin_unlock_irqrestore(pinstance->host->host_lock,
4645 host_lock_flags);
4646 } else if (cmd->cmd_done != NULL) {
4647 cmd->cmd_done(cmd);
4648 }
4649
4650 spin_lock_irqsave(lockp, hrrq_lock_flags);
4651 resp = le32_to_cpu(*(pinstance->hrrq_curr[id]));
4652 }
4653
4654 spin_unlock_irqrestore(lockp, hrrq_lock_flags);
4655}
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667static
4668void pmcraid_unregister_interrupt_handler(struct pmcraid_instance *pinstance)
4669{
4670 int i;
4671
4672 for (i = 0; i < pinstance->num_hrrq; i++)
4673 free_irq(pinstance->hrrq_vector[i].vector,
4674 &(pinstance->hrrq_vector[i]));
4675
4676 if (pinstance->interrupt_mode) {
4677 pci_disable_msix(pinstance->pdev);
4678 pinstance->interrupt_mode = 0;
4679 }
4680}
4681
4682
4683
4684
4685
4686
4687
4688
4689static int
4690pmcraid_register_interrupt_handler(struct pmcraid_instance *pinstance)
4691{
4692 int rc;
4693 struct pci_dev *pdev = pinstance->pdev;
4694
4695 if ((pmcraid_enable_msix) &&
4696 (pci_find_capability(pdev, PCI_CAP_ID_MSIX))) {
4697 int num_hrrq = PMCRAID_NUM_MSIX_VECTORS;
4698 struct msix_entry entries[PMCRAID_NUM_MSIX_VECTORS];
4699 int i;
4700 for (i = 0; i < PMCRAID_NUM_MSIX_VECTORS; i++)
4701 entries[i].entry = i;
4702
4703 rc = pci_enable_msix(pdev, entries, num_hrrq);
4704 if (rc < 0)
4705 goto pmcraid_isr_legacy;
4706
4707
4708
4709
4710 if (rc > 0) {
4711 num_hrrq = rc;
4712 if (pci_enable_msix(pdev, entries, num_hrrq))
4713 goto pmcraid_isr_legacy;
4714 }
4715
4716 for (i = 0; i < num_hrrq; i++) {
4717 pinstance->hrrq_vector[i].hrrq_id = i;
4718 pinstance->hrrq_vector[i].drv_inst = pinstance;
4719 pinstance->hrrq_vector[i].vector = entries[i].vector;
4720 rc = request_irq(pinstance->hrrq_vector[i].vector,
4721 pmcraid_isr_msix, 0,
4722 PMCRAID_DRIVER_NAME,
4723 &(pinstance->hrrq_vector[i]));
4724
4725 if (rc) {
4726 int j;
4727 for (j = 0; j < i; j++)
4728 free_irq(entries[j].vector,
4729 &(pinstance->hrrq_vector[j]));
4730 pci_disable_msix(pdev);
4731 goto pmcraid_isr_legacy;
4732 }
4733 }
4734
4735 pinstance->num_hrrq = num_hrrq;
4736 pinstance->interrupt_mode = 1;
4737 iowrite32(DOORBELL_INTR_MODE_MSIX,
4738 pinstance->int_regs.host_ioa_interrupt_reg);
4739 ioread32(pinstance->int_regs.host_ioa_interrupt_reg);
4740 goto pmcraid_isr_out;
4741 }
4742
4743pmcraid_isr_legacy:
4744
4745
4746
4747 pinstance->hrrq_vector[0].hrrq_id = 0;
4748 pinstance->hrrq_vector[0].drv_inst = pinstance;
4749 pinstance->hrrq_vector[0].vector = pdev->irq;
4750 pinstance->num_hrrq = 1;
4751 rc = 0;
4752
4753 rc = request_irq(pdev->irq, pmcraid_isr, IRQF_SHARED,
4754 PMCRAID_DRIVER_NAME, &pinstance->hrrq_vector[0]);
4755pmcraid_isr_out:
4756 return rc;
4757}
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767static void
4768pmcraid_release_cmd_blocks(struct pmcraid_instance *pinstance, int max_index)
4769{
4770 int i;
4771 for (i = 0; i < max_index; i++) {
4772 kmem_cache_free(pinstance->cmd_cachep, pinstance->cmd_list[i]);
4773 pinstance->cmd_list[i] = NULL;
4774 }
4775 kmem_cache_destroy(pinstance->cmd_cachep);
4776 pinstance->cmd_cachep = NULL;
4777}
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790static void
4791pmcraid_release_control_blocks(
4792 struct pmcraid_instance *pinstance,
4793 int max_index
4794)
4795{
4796 int i;
4797
4798 if (pinstance->control_pool == NULL)
4799 return;
4800
4801 for (i = 0; i < max_index; i++) {
4802 pci_pool_free(pinstance->control_pool,
4803 pinstance->cmd_list[i]->ioa_cb,
4804 pinstance->cmd_list[i]->ioa_cb_bus_addr);
4805 pinstance->cmd_list[i]->ioa_cb = NULL;
4806 pinstance->cmd_list[i]->ioa_cb_bus_addr = 0;
4807 }
4808 pci_pool_destroy(pinstance->control_pool);
4809 pinstance->control_pool = NULL;
4810}
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821static int __devinit
4822pmcraid_allocate_cmd_blocks(struct pmcraid_instance *pinstance)
4823{
4824 int i;
4825
4826 sprintf(pinstance->cmd_pool_name, "pmcraid_cmd_pool_%d",
4827 pinstance->host->unique_id);
4828
4829
4830 pinstance->cmd_cachep = kmem_cache_create(
4831 pinstance->cmd_pool_name,
4832 sizeof(struct pmcraid_cmd), 0,
4833 SLAB_HWCACHE_ALIGN, NULL);
4834 if (!pinstance->cmd_cachep)
4835 return -ENOMEM;
4836
4837 for (i = 0; i < PMCRAID_MAX_CMD; i++) {
4838 pinstance->cmd_list[i] =
4839 kmem_cache_alloc(pinstance->cmd_cachep, GFP_KERNEL);
4840 if (!pinstance->cmd_list[i]) {
4841 pmcraid_release_cmd_blocks(pinstance, i);
4842 return -ENOMEM;
4843 }
4844 }
4845 return 0;
4846}
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858static int __devinit
4859pmcraid_allocate_control_blocks(struct pmcraid_instance *pinstance)
4860{
4861 int i;
4862
4863 sprintf(pinstance->ctl_pool_name, "pmcraid_control_pool_%d",
4864 pinstance->host->unique_id);
4865
4866 pinstance->control_pool =
4867 pci_pool_create(pinstance->ctl_pool_name,
4868 pinstance->pdev,
4869 sizeof(struct pmcraid_control_block),
4870 PMCRAID_IOARCB_ALIGNMENT, 0);
4871
4872 if (!pinstance->control_pool)
4873 return -ENOMEM;
4874
4875 for (i = 0; i < PMCRAID_MAX_CMD; i++) {
4876 pinstance->cmd_list[i]->ioa_cb =
4877 pci_pool_alloc(
4878 pinstance->control_pool,
4879 GFP_KERNEL,
4880 &(pinstance->cmd_list[i]->ioa_cb_bus_addr));
4881
4882 if (!pinstance->cmd_list[i]->ioa_cb) {
4883 pmcraid_release_control_blocks(pinstance, i);
4884 return -ENOMEM;
4885 }
4886 memset(pinstance->cmd_list[i]->ioa_cb, 0,
4887 sizeof(struct pmcraid_control_block));
4888 }
4889 return 0;
4890}
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900static void
4901pmcraid_release_host_rrqs(struct pmcraid_instance *pinstance, int maxindex)
4902{
4903 int i;
4904 for (i = 0; i < maxindex; i++) {
4905
4906 pci_free_consistent(pinstance->pdev,
4907 HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD,
4908 pinstance->hrrq_start[i],
4909 pinstance->hrrq_start_bus_addr[i]);
4910
4911
4912 pinstance->hrrq_start[i] = NULL;
4913 pinstance->hrrq_start_bus_addr[i] = 0;
4914 pinstance->host_toggle_bit[i] = 0;
4915 }
4916}
4917
4918
4919
4920
4921
4922
4923
4924
4925static int __devinit
4926pmcraid_allocate_host_rrqs(struct pmcraid_instance *pinstance)
4927{
4928 int i, buffer_size;
4929
4930 buffer_size = HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD;
4931
4932 for (i = 0; i < pinstance->num_hrrq; i++) {
4933 pinstance->hrrq_start[i] =
4934 pci_alloc_consistent(
4935 pinstance->pdev,
4936 buffer_size,
4937 &(pinstance->hrrq_start_bus_addr[i]));
4938
4939 if (pinstance->hrrq_start[i] == 0) {
4940 pmcraid_err("pci_alloc failed for hrrq vector : %d\n",
4941 i);
4942 pmcraid_release_host_rrqs(pinstance, i);
4943 return -ENOMEM;
4944 }
4945
4946 memset(pinstance->hrrq_start[i], 0, buffer_size);
4947 pinstance->hrrq_curr[i] = pinstance->hrrq_start[i];
4948 pinstance->hrrq_end[i] =
4949 pinstance->hrrq_start[i] + PMCRAID_MAX_CMD - 1;
4950 pinstance->host_toggle_bit[i] = 1;
4951 spin_lock_init(&pinstance->hrrq_lock[i]);
4952 }
4953 return 0;
4954}
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964static void pmcraid_release_hcams(struct pmcraid_instance *pinstance)
4965{
4966 if (pinstance->ccn.msg != NULL) {
4967 pci_free_consistent(pinstance->pdev,
4968 PMCRAID_AEN_HDR_SIZE +
4969 sizeof(struct pmcraid_hcam_ccn_ext),
4970 pinstance->ccn.msg,
4971 pinstance->ccn.baddr);
4972
4973 pinstance->ccn.msg = NULL;
4974 pinstance->ccn.hcam = NULL;
4975 pinstance->ccn.baddr = 0;
4976 }
4977
4978 if (pinstance->ldn.msg != NULL) {
4979 pci_free_consistent(pinstance->pdev,
4980 PMCRAID_AEN_HDR_SIZE +
4981 sizeof(struct pmcraid_hcam_ldn),
4982 pinstance->ldn.msg,
4983 pinstance->ldn.baddr);
4984
4985 pinstance->ldn.msg = NULL;
4986 pinstance->ldn.hcam = NULL;
4987 pinstance->ldn.baddr = 0;
4988 }
4989}
4990
4991
4992
4993
4994
4995
4996
4997
4998static int pmcraid_allocate_hcams(struct pmcraid_instance *pinstance)
4999{
5000 pinstance->ccn.msg = pci_alloc_consistent(
5001 pinstance->pdev,
5002 PMCRAID_AEN_HDR_SIZE +
5003 sizeof(struct pmcraid_hcam_ccn_ext),
5004 &(pinstance->ccn.baddr));
5005
5006 pinstance->ldn.msg = pci_alloc_consistent(
5007 pinstance->pdev,
5008 PMCRAID_AEN_HDR_SIZE +
5009 sizeof(struct pmcraid_hcam_ldn),
5010 &(pinstance->ldn.baddr));
5011
5012 if (pinstance->ldn.msg == NULL || pinstance->ccn.msg == NULL) {
5013 pmcraid_release_hcams(pinstance);
5014 } else {
5015 pinstance->ccn.hcam =
5016 (void *)pinstance->ccn.msg + PMCRAID_AEN_HDR_SIZE;
5017 pinstance->ldn.hcam =
5018 (void *)pinstance->ldn.msg + PMCRAID_AEN_HDR_SIZE;
5019
5020 atomic_set(&pinstance->ccn.ignore, 0);
5021 atomic_set(&pinstance->ldn.ignore, 0);
5022 }
5023
5024 return (pinstance->ldn.msg == NULL) ? -ENOMEM : 0;
5025}
5026
5027
5028
5029
5030
5031
5032
5033
5034static void pmcraid_release_config_buffers(struct pmcraid_instance *pinstance)
5035{
5036 if (pinstance->cfg_table != NULL &&
5037 pinstance->cfg_table_bus_addr != 0) {
5038 pci_free_consistent(pinstance->pdev,
5039 sizeof(struct pmcraid_config_table),
5040 pinstance->cfg_table,
5041 pinstance->cfg_table_bus_addr);
5042 pinstance->cfg_table = NULL;
5043 pinstance->cfg_table_bus_addr = 0;
5044 }
5045
5046 if (pinstance->res_entries != NULL) {
5047 int i;
5048
5049 for (i = 0; i < PMCRAID_MAX_RESOURCES; i++)
5050 list_del(&pinstance->res_entries[i].queue);
5051 kfree(pinstance->res_entries);
5052 pinstance->res_entries = NULL;
5053 }
5054
5055 pmcraid_release_hcams(pinstance);
5056}
5057
5058
5059
5060
5061
5062
5063
5064
5065static int __devinit
5066pmcraid_allocate_config_buffers(struct pmcraid_instance *pinstance)
5067{
5068 int i;
5069
5070 pinstance->res_entries =
5071 kzalloc(sizeof(struct pmcraid_resource_entry) *
5072 PMCRAID_MAX_RESOURCES, GFP_KERNEL);
5073
5074 if (NULL == pinstance->res_entries) {
5075 pmcraid_err("failed to allocate memory for resource table\n");
5076 return -ENOMEM;
5077 }
5078
5079 for (i = 0; i < PMCRAID_MAX_RESOURCES; i++)
5080 list_add_tail(&pinstance->res_entries[i].queue,
5081 &pinstance->free_res_q);
5082
5083 pinstance->cfg_table =
5084 pci_alloc_consistent(pinstance->pdev,
5085 sizeof(struct pmcraid_config_table),
5086 &pinstance->cfg_table_bus_addr);
5087
5088 if (NULL == pinstance->cfg_table) {
5089 pmcraid_err("couldn't alloc DMA memory for config table\n");
5090 pmcraid_release_config_buffers(pinstance);
5091 return -ENOMEM;
5092 }
5093
5094 if (pmcraid_allocate_hcams(pinstance)) {
5095 pmcraid_err("could not alloc DMA memory for HCAMS\n");
5096 pmcraid_release_config_buffers(pinstance);
5097 return -ENOMEM;
5098 }
5099
5100 return 0;
5101}
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111static void pmcraid_init_tasklets(struct pmcraid_instance *pinstance)
5112{
5113 int i;
5114 for (i = 0; i < pinstance->num_hrrq; i++)
5115 tasklet_init(&pinstance->isr_tasklet[i],
5116 pmcraid_tasklet_function,
5117 (unsigned long)&pinstance->hrrq_vector[i]);
5118}
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128static void pmcraid_kill_tasklets(struct pmcraid_instance *pinstance)
5129{
5130 int i;
5131 for (i = 0; i < pinstance->num_hrrq; i++)
5132 tasklet_kill(&pinstance->isr_tasklet[i]);
5133}
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143static void pmcraid_release_buffers(struct pmcraid_instance *pinstance)
5144{
5145 pmcraid_release_config_buffers(pinstance);
5146 pmcraid_release_control_blocks(pinstance, PMCRAID_MAX_CMD);
5147 pmcraid_release_cmd_blocks(pinstance, PMCRAID_MAX_CMD);
5148 pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq);
5149
5150 if (pinstance->inq_data != NULL) {
5151 pci_free_consistent(pinstance->pdev,
5152 sizeof(struct pmcraid_inquiry_data),
5153 pinstance->inq_data,
5154 pinstance->inq_data_baddr);
5155
5156 pinstance->inq_data = NULL;
5157 pinstance->inq_data_baddr = 0;
5158 }
5159
5160 if (pinstance->timestamp_data != NULL) {
5161 pci_free_consistent(pinstance->pdev,
5162 sizeof(struct pmcraid_timestamp_data),
5163 pinstance->timestamp_data,
5164 pinstance->timestamp_data_baddr);
5165
5166 pinstance->timestamp_data = NULL;
5167 pinstance->timestamp_data_baddr = 0;
5168 }
5169}
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184static int __devinit pmcraid_init_buffers(struct pmcraid_instance *pinstance)
5185{
5186 int i;
5187
5188 if (pmcraid_allocate_host_rrqs(pinstance)) {
5189 pmcraid_err("couldn't allocate memory for %d host rrqs\n",
5190 pinstance->num_hrrq);
5191 return -ENOMEM;
5192 }
5193
5194 if (pmcraid_allocate_config_buffers(pinstance)) {
5195 pmcraid_err("couldn't allocate memory for config buffers\n");
5196 pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq);
5197 return -ENOMEM;
5198 }
5199
5200 if (pmcraid_allocate_cmd_blocks(pinstance)) {
5201 pmcraid_err("couldn't allocate memory for cmd blocks\n");
5202 pmcraid_release_config_buffers(pinstance);
5203 pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq);
5204 return -ENOMEM;
5205 }
5206
5207 if (pmcraid_allocate_control_blocks(pinstance)) {
5208 pmcraid_err("couldn't allocate memory control blocks\n");
5209 pmcraid_release_config_buffers(pinstance);
5210 pmcraid_release_cmd_blocks(pinstance, PMCRAID_MAX_CMD);
5211 pmcraid_release_host_rrqs(pinstance, pinstance->num_hrrq);
5212 return -ENOMEM;
5213 }
5214
5215
5216 pinstance->inq_data = pci_alloc_consistent(
5217 pinstance->pdev,
5218 sizeof(struct pmcraid_inquiry_data),
5219 &pinstance->inq_data_baddr);
5220
5221 if (pinstance->inq_data == NULL) {
5222 pmcraid_err("couldn't allocate DMA memory for INQUIRY\n");
5223 pmcraid_release_buffers(pinstance);
5224 return -ENOMEM;
5225 }
5226
5227
5228 pinstance->timestamp_data = pci_alloc_consistent(
5229 pinstance->pdev,
5230 sizeof(struct pmcraid_timestamp_data),
5231 &pinstance->timestamp_data_baddr);
5232
5233 if (pinstance->timestamp_data == NULL) {
5234 pmcraid_err("couldn't allocate DMA memory for \
5235 set time_stamp \n");
5236 pmcraid_release_buffers(pinstance);
5237 return -ENOMEM;
5238 }
5239
5240
5241
5242
5243
5244
5245 for (i = 0; i < PMCRAID_MAX_CMD; i++) {
5246 struct pmcraid_cmd *cmdp = pinstance->cmd_list[i];
5247 pmcraid_init_cmdblk(cmdp, i);
5248 cmdp->drv_inst = pinstance;
5249 list_add_tail(&cmdp->free_list, &pinstance->free_cmd_pool);
5250 }
5251
5252 return 0;
5253}
5254
5255
5256
5257
5258
5259
5260
5261static void pmcraid_reinit_buffers(struct pmcraid_instance *pinstance)
5262{
5263 int i;
5264 int buffer_size = HRRQ_ENTRY_SIZE * PMCRAID_MAX_CMD;
5265
5266 for (i = 0; i < pinstance->num_hrrq; i++) {
5267 memset(pinstance->hrrq_start[i], 0, buffer_size);
5268 pinstance->hrrq_curr[i] = pinstance->hrrq_start[i];
5269 pinstance->hrrq_end[i] =
5270 pinstance->hrrq_start[i] + PMCRAID_MAX_CMD - 1;
5271 pinstance->host_toggle_bit[i] = 1;
5272 }
5273}
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284static int __devinit pmcraid_init_instance(
5285 struct pci_dev *pdev,
5286 struct Scsi_Host *host,
5287 void __iomem *mapped_pci_addr
5288)
5289{
5290 struct pmcraid_instance *pinstance =
5291 (struct pmcraid_instance *)host->hostdata;
5292
5293 pinstance->host = host;
5294 pinstance->pdev = pdev;
5295
5296
5297 pinstance->mapped_dma_addr = mapped_pci_addr;
5298
5299
5300 {
5301 struct pmcraid_chip_details *chip_cfg = pinstance->chip_cfg;
5302 struct pmcraid_interrupts *pint_regs = &pinstance->int_regs;
5303
5304 pinstance->ioarrin = mapped_pci_addr + chip_cfg->ioarrin;
5305
5306 pint_regs->ioa_host_interrupt_reg =
5307 mapped_pci_addr + chip_cfg->ioa_host_intr;
5308 pint_regs->ioa_host_interrupt_clr_reg =
5309 mapped_pci_addr + chip_cfg->ioa_host_intr_clr;
5310 pint_regs->ioa_host_msix_interrupt_reg =
5311 mapped_pci_addr + chip_cfg->ioa_host_msix_intr;
5312 pint_regs->host_ioa_interrupt_reg =
5313 mapped_pci_addr + chip_cfg->host_ioa_intr;
5314 pint_regs->host_ioa_interrupt_clr_reg =
5315 mapped_pci_addr + chip_cfg->host_ioa_intr_clr;
5316
5317
5318
5319
5320 pinstance->mailbox = mapped_pci_addr + chip_cfg->mailbox;
5321 pinstance->ioa_status = mapped_pci_addr + chip_cfg->ioastatus;
5322 pint_regs->ioa_host_interrupt_mask_reg =
5323 mapped_pci_addr + chip_cfg->ioa_host_mask;
5324 pint_regs->ioa_host_interrupt_mask_clr_reg =
5325 mapped_pci_addr + chip_cfg->ioa_host_mask_clr;
5326 pint_regs->global_interrupt_mask_reg =
5327 mapped_pci_addr + chip_cfg->global_intr_mask;
5328 };
5329
5330 pinstance->ioa_reset_attempts = 0;
5331 init_waitqueue_head(&pinstance->reset_wait_q);
5332
5333 atomic_set(&pinstance->outstanding_cmds, 0);
5334 atomic_set(&pinstance->last_message_id, 0);
5335 atomic_set(&pinstance->expose_resources, 0);
5336
5337 INIT_LIST_HEAD(&pinstance->free_res_q);
5338 INIT_LIST_HEAD(&pinstance->used_res_q);
5339 INIT_LIST_HEAD(&pinstance->free_cmd_pool);
5340 INIT_LIST_HEAD(&pinstance->pending_cmd_pool);
5341
5342 spin_lock_init(&pinstance->free_pool_lock);
5343 spin_lock_init(&pinstance->pending_pool_lock);
5344 spin_lock_init(&pinstance->resource_lock);
5345 mutex_init(&pinstance->aen_queue_lock);
5346
5347
5348 INIT_WORK(&pinstance->worker_q, pmcraid_worker_function);
5349
5350
5351 pinstance->current_log_level = pmcraid_log_level;
5352
5353
5354 pinstance->ioa_state = IOA_STATE_UNKNOWN;
5355 pinstance->reset_cmd = NULL;
5356 return 0;
5357}
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368static void pmcraid_shutdown(struct pci_dev *pdev)
5369{
5370 struct pmcraid_instance *pinstance = pci_get_drvdata(pdev);
5371 pmcraid_reset_bringdown(pinstance);
5372}
5373
5374
5375
5376
5377
5378static unsigned short pmcraid_get_minor(void)
5379{
5380 int minor;
5381
5382 minor = find_first_zero_bit(pmcraid_minor, sizeof(pmcraid_minor));
5383 __set_bit(minor, pmcraid_minor);
5384 return minor;
5385}
5386
5387
5388
5389
5390static void pmcraid_release_minor(unsigned short minor)
5391{
5392 __clear_bit(minor, pmcraid_minor);
5393}
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403static int pmcraid_setup_chrdev(struct pmcraid_instance *pinstance)
5404{
5405 int minor;
5406 int error;
5407
5408 minor = pmcraid_get_minor();
5409 cdev_init(&pinstance->cdev, &pmcraid_fops);
5410 pinstance->cdev.owner = THIS_MODULE;
5411
5412 error = cdev_add(&pinstance->cdev, MKDEV(pmcraid_major, minor), 1);
5413
5414 if (error)
5415 pmcraid_release_minor(minor);
5416 else
5417 device_create(pmcraid_class, NULL, MKDEV(pmcraid_major, minor),
5418 NULL, "%s%u", PMCRAID_DEVFILE, minor);
5419 return error;
5420}
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430static void pmcraid_release_chrdev(struct pmcraid_instance *pinstance)
5431{
5432 pmcraid_release_minor(MINOR(pinstance->cdev.dev));
5433 device_destroy(pmcraid_class,
5434 MKDEV(pmcraid_major, MINOR(pinstance->cdev.dev)));
5435 cdev_del(&pinstance->cdev);
5436}
5437
5438
5439
5440
5441
5442
5443
5444
5445static void __devexit pmcraid_remove(struct pci_dev *pdev)
5446{
5447 struct pmcraid_instance *pinstance = pci_get_drvdata(pdev);
5448
5449
5450 pmcraid_release_chrdev(pinstance);
5451
5452
5453 scsi_remove_host(pinstance->host);
5454
5455
5456 scsi_block_requests(pinstance->host);
5457
5458
5459 pmcraid_shutdown(pdev);
5460
5461 pmcraid_disable_interrupts(pinstance, ~0);
5462 flush_work_sync(&pinstance->worker_q);
5463
5464 pmcraid_kill_tasklets(pinstance);
5465 pmcraid_unregister_interrupt_handler(pinstance);
5466 pmcraid_release_buffers(pinstance);
5467 iounmap(pinstance->mapped_dma_addr);
5468 pci_release_regions(pdev);
5469 scsi_host_put(pinstance->host);
5470 pci_disable_device(pdev);
5471
5472 return;
5473}
5474
5475#ifdef CONFIG_PM
5476
5477
5478
5479
5480
5481
5482
5483static int pmcraid_suspend(struct pci_dev *pdev, pm_message_t state)
5484{
5485 struct pmcraid_instance *pinstance = pci_get_drvdata(pdev);
5486
5487 pmcraid_shutdown(pdev);
5488 pmcraid_disable_interrupts(pinstance, ~0);
5489 pmcraid_kill_tasklets(pinstance);
5490 pci_set_drvdata(pinstance->pdev, pinstance);
5491 pmcraid_unregister_interrupt_handler(pinstance);
5492 pci_save_state(pdev);
5493 pci_disable_device(pdev);
5494 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5495
5496 return 0;
5497}
5498
5499
5500
5501
5502
5503
5504
5505static int pmcraid_resume(struct pci_dev *pdev)
5506{
5507 struct pmcraid_instance *pinstance = pci_get_drvdata(pdev);
5508 struct Scsi_Host *host = pinstance->host;
5509 int rc;
5510
5511 pci_set_power_state(pdev, PCI_D0);
5512 pci_enable_wake(pdev, PCI_D0, 0);
5513 pci_restore_state(pdev);
5514
5515 rc = pci_enable_device(pdev);
5516
5517 if (rc) {
5518 dev_err(&pdev->dev, "resume: Enable device failed\n");
5519 return rc;
5520 }
5521
5522 pci_set_master(pdev);
5523
5524 if ((sizeof(dma_addr_t) == 4) ||
5525 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
5526 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5527
5528 if (rc == 0)
5529 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
5530
5531 if (rc != 0) {
5532 dev_err(&pdev->dev, "resume: Failed to set PCI DMA mask\n");
5533 goto disable_device;
5534 }
5535
5536 pmcraid_disable_interrupts(pinstance, ~0);
5537 atomic_set(&pinstance->outstanding_cmds, 0);
5538 rc = pmcraid_register_interrupt_handler(pinstance);
5539
5540 if (rc) {
5541 dev_err(&pdev->dev,
5542 "resume: couldn't register interrupt handlers\n");
5543 rc = -ENODEV;
5544 goto release_host;
5545 }
5546
5547 pmcraid_init_tasklets(pinstance);
5548 pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS);
5549
5550
5551
5552
5553 pinstance->ioa_hard_reset = 1;
5554
5555
5556
5557
5558 if (pmcraid_reset_bringup(pinstance)) {
5559 dev_err(&pdev->dev, "couldn't initialize IOA\n");
5560 rc = -ENODEV;
5561 goto release_tasklets;
5562 }
5563
5564 return 0;
5565
5566release_tasklets:
5567 pmcraid_disable_interrupts(pinstance, ~0);
5568 pmcraid_kill_tasklets(pinstance);
5569 pmcraid_unregister_interrupt_handler(pinstance);
5570
5571release_host:
5572 scsi_host_put(host);
5573
5574disable_device:
5575 pci_disable_device(pdev);
5576
5577 return rc;
5578}
5579
5580#else
5581
5582#define pmcraid_suspend NULL
5583#define pmcraid_resume NULL
5584
5585#endif
5586
5587
5588
5589
5590
5591
5592static void pmcraid_complete_ioa_reset(struct pmcraid_cmd *cmd)
5593{
5594 struct pmcraid_instance *pinstance = cmd->drv_inst;
5595 unsigned long flags;
5596
5597 spin_lock_irqsave(pinstance->host->host_lock, flags);
5598 pmcraid_ioa_reset(cmd);
5599 spin_unlock_irqrestore(pinstance->host->host_lock, flags);
5600 scsi_unblock_requests(pinstance->host);
5601 schedule_work(&pinstance->worker_q);
5602}
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612static void pmcraid_set_supported_devs(struct pmcraid_cmd *cmd)
5613{
5614 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
5615 void (*cmd_done) (struct pmcraid_cmd *) = pmcraid_complete_ioa_reset;
5616
5617 pmcraid_reinit_cmdblk(cmd);
5618
5619 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
5620 ioarcb->request_type = REQ_TYPE_IOACMD;
5621 ioarcb->cdb[0] = PMCRAID_SET_SUPPORTED_DEVICES;
5622 ioarcb->cdb[1] = ALL_DEVICES_SUPPORTED;
5623
5624
5625
5626
5627
5628 if (cmd->drv_inst->reinit_cfg_table) {
5629 cmd->drv_inst->reinit_cfg_table = 0;
5630 cmd->release = 1;
5631 cmd_done = pmcraid_reinit_cfgtable_done;
5632 }
5633
5634
5635
5636
5637
5638 pmcraid_send_cmd(cmd,
5639 cmd_done,
5640 PMCRAID_SET_SUP_DEV_TIMEOUT,
5641 pmcraid_timeout_handler);
5642 return;
5643}
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653static void pmcraid_set_timestamp(struct pmcraid_cmd *cmd)
5654{
5655 struct pmcraid_instance *pinstance = cmd->drv_inst;
5656 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
5657 __be32 time_stamp_len = cpu_to_be32(PMCRAID_TIMESTAMP_LEN);
5658 struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl;
5659
5660 struct timeval tv;
5661 __le64 timestamp;
5662
5663 do_gettimeofday(&tv);
5664 timestamp = tv.tv_sec * 1000;
5665
5666 pinstance->timestamp_data->timestamp[0] = (__u8)(timestamp);
5667 pinstance->timestamp_data->timestamp[1] = (__u8)((timestamp) >> 8);
5668 pinstance->timestamp_data->timestamp[2] = (__u8)((timestamp) >> 16);
5669 pinstance->timestamp_data->timestamp[3] = (__u8)((timestamp) >> 24);
5670 pinstance->timestamp_data->timestamp[4] = (__u8)((timestamp) >> 32);
5671 pinstance->timestamp_data->timestamp[5] = (__u8)((timestamp) >> 40);
5672
5673 pmcraid_reinit_cmdblk(cmd);
5674 ioarcb->request_type = REQ_TYPE_SCSI;
5675 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
5676 ioarcb->cdb[0] = PMCRAID_SCSI_SET_TIMESTAMP;
5677 ioarcb->cdb[1] = PMCRAID_SCSI_SERVICE_ACTION;
5678 memcpy(&(ioarcb->cdb[6]), &time_stamp_len, sizeof(time_stamp_len));
5679
5680 ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) +
5681 offsetof(struct pmcraid_ioarcb,
5682 add_data.u.ioadl[0]));
5683 ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc));
5684 ioarcb->ioarcb_bus_addr &= ~(0x1FULL);
5685
5686 ioarcb->request_flags0 |= NO_LINK_DESCS;
5687 ioarcb->request_flags0 |= TRANSFER_DIR_WRITE;
5688 ioarcb->data_transfer_length =
5689 cpu_to_le32(sizeof(struct pmcraid_timestamp_data));
5690 ioadl = &(ioarcb->add_data.u.ioadl[0]);
5691 ioadl->flags = IOADL_FLAGS_LAST_DESC;
5692 ioadl->address = cpu_to_le64(pinstance->timestamp_data_baddr);
5693 ioadl->data_len = cpu_to_le32(sizeof(struct pmcraid_timestamp_data));
5694
5695 if (!pinstance->timestamp_error) {
5696 pinstance->timestamp_error = 0;
5697 pmcraid_send_cmd(cmd, pmcraid_set_supported_devs,
5698 PMCRAID_INTERNAL_TIMEOUT, pmcraid_timeout_handler);
5699 } else {
5700 pmcraid_send_cmd(cmd, pmcraid_return_cmd,
5701 PMCRAID_INTERNAL_TIMEOUT, pmcraid_timeout_handler);
5702 return;
5703 }
5704}
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719static void pmcraid_init_res_table(struct pmcraid_cmd *cmd)
5720{
5721 struct pmcraid_instance *pinstance = cmd->drv_inst;
5722 struct pmcraid_resource_entry *res, *temp;
5723 struct pmcraid_config_table_entry *cfgte;
5724 unsigned long lock_flags;
5725 int found, rc, i;
5726 u16 fw_version;
5727 LIST_HEAD(old_res);
5728
5729 if (pinstance->cfg_table->flags & MICROCODE_UPDATE_REQUIRED)
5730 pmcraid_err("IOA requires microcode download\n");
5731
5732 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
5733
5734
5735
5736
5737
5738 spin_lock_irqsave(&pinstance->resource_lock, lock_flags);
5739
5740 list_for_each_entry_safe(res, temp, &pinstance->used_res_q, queue)
5741 list_move_tail(&res->queue, &old_res);
5742
5743 for (i = 0; i < pinstance->cfg_table->num_entries; i++) {
5744 if (be16_to_cpu(pinstance->inq_data->fw_version) <=
5745 PMCRAID_FW_VERSION_1)
5746 cfgte = &pinstance->cfg_table->entries[i];
5747 else
5748 cfgte = (struct pmcraid_config_table_entry *)
5749 &pinstance->cfg_table->entries_ext[i];
5750
5751 if (!pmcraid_expose_resource(fw_version, cfgte))
5752 continue;
5753
5754 found = 0;
5755
5756
5757 list_for_each_entry_safe(res, temp, &old_res, queue) {
5758
5759 rc = memcmp(&res->cfg_entry.resource_address,
5760 &cfgte->resource_address,
5761 sizeof(cfgte->resource_address));
5762 if (!rc) {
5763 list_move_tail(&res->queue,
5764 &pinstance->used_res_q);
5765 found = 1;
5766 break;
5767 }
5768 }
5769
5770
5771 if (!found) {
5772
5773 if (list_empty(&pinstance->free_res_q)) {
5774 pmcraid_err("Too many devices attached\n");
5775 break;
5776 }
5777
5778 found = 1;
5779 res = list_entry(pinstance->free_res_q.next,
5780 struct pmcraid_resource_entry, queue);
5781
5782 res->scsi_dev = NULL;
5783 res->change_detected = RES_CHANGE_ADD;
5784 res->reset_progress = 0;
5785 list_move_tail(&res->queue, &pinstance->used_res_q);
5786 }
5787
5788
5789
5790
5791 if (found) {
5792 memcpy(&res->cfg_entry, cfgte,
5793 pinstance->config_table_entry_size);
5794 pmcraid_info("New res type:%x, vset:%x, addr:%x:\n",
5795 res->cfg_entry.resource_type,
5796 (fw_version <= PMCRAID_FW_VERSION_1 ?
5797 res->cfg_entry.unique_flags1 :
5798 res->cfg_entry.array_id & 0xFF),
5799 le32_to_cpu(res->cfg_entry.resource_address));
5800 }
5801 }
5802
5803
5804 list_for_each_entry_safe(res, temp, &old_res, queue) {
5805
5806 if (res->scsi_dev) {
5807 res->change_detected = RES_CHANGE_DEL;
5808 res->cfg_entry.resource_handle =
5809 PMCRAID_INVALID_RES_HANDLE;
5810 list_move_tail(&res->queue, &pinstance->used_res_q);
5811 } else {
5812 list_move_tail(&res->queue, &pinstance->free_res_q);
5813 }
5814 }
5815
5816
5817 spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
5818 pmcraid_set_timestamp(cmd);
5819}
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831static void pmcraid_querycfg(struct pmcraid_cmd *cmd)
5832{
5833 struct pmcraid_ioarcb *ioarcb = &cmd->ioa_cb->ioarcb;
5834 struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl;
5835 struct pmcraid_instance *pinstance = cmd->drv_inst;
5836 int cfg_table_size = cpu_to_be32(sizeof(struct pmcraid_config_table));
5837
5838 if (be16_to_cpu(pinstance->inq_data->fw_version) <=
5839 PMCRAID_FW_VERSION_1)
5840 pinstance->config_table_entry_size =
5841 sizeof(struct pmcraid_config_table_entry);
5842 else
5843 pinstance->config_table_entry_size =
5844 sizeof(struct pmcraid_config_table_entry_ext);
5845
5846 ioarcb->request_type = REQ_TYPE_IOACMD;
5847 ioarcb->resource_handle = cpu_to_le32(PMCRAID_IOA_RES_HANDLE);
5848
5849 ioarcb->cdb[0] = PMCRAID_QUERY_IOA_CONFIG;
5850
5851
5852 memcpy(&(ioarcb->cdb[10]), &cfg_table_size, sizeof(cfg_table_size));
5853
5854
5855
5856
5857 ioarcb->ioadl_bus_addr = cpu_to_le64((cmd->ioa_cb_bus_addr) +
5858 offsetof(struct pmcraid_ioarcb,
5859 add_data.u.ioadl[0]));
5860 ioarcb->ioadl_length = cpu_to_le32(sizeof(struct pmcraid_ioadl_desc));
5861 ioarcb->ioarcb_bus_addr &= ~(0x1FULL);
5862
5863 ioarcb->request_flags0 |= NO_LINK_DESCS;
5864 ioarcb->data_transfer_length =
5865 cpu_to_le32(sizeof(struct pmcraid_config_table));
5866
5867 ioadl = &(ioarcb->add_data.u.ioadl[0]);
5868 ioadl->flags = IOADL_FLAGS_LAST_DESC;
5869 ioadl->address = cpu_to_le64(pinstance->cfg_table_bus_addr);
5870 ioadl->data_len = cpu_to_le32(sizeof(struct pmcraid_config_table));
5871
5872 pmcraid_send_cmd(cmd, pmcraid_init_res_table,
5873 PMCRAID_INTERNAL_TIMEOUT, pmcraid_timeout_handler);
5874}
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886static int __devinit pmcraid_probe(
5887 struct pci_dev *pdev,
5888 const struct pci_device_id *dev_id
5889)
5890{
5891 struct pmcraid_instance *pinstance;
5892 struct Scsi_Host *host;
5893 void __iomem *mapped_pci_addr;
5894 int rc = PCIBIOS_SUCCESSFUL;
5895
5896 if (atomic_read(&pmcraid_adapter_count) >= PMCRAID_MAX_ADAPTERS) {
5897 pmcraid_err
5898 ("maximum number(%d) of supported adapters reached\n",
5899 atomic_read(&pmcraid_adapter_count));
5900 return -ENOMEM;
5901 }
5902
5903 atomic_inc(&pmcraid_adapter_count);
5904 rc = pci_enable_device(pdev);
5905
5906 if (rc) {
5907 dev_err(&pdev->dev, "Cannot enable adapter\n");
5908 atomic_dec(&pmcraid_adapter_count);
5909 return rc;
5910 }
5911
5912 dev_info(&pdev->dev,
5913 "Found new IOA(%x:%x), Total IOA count: %d\n",
5914 pdev->vendor, pdev->device,
5915 atomic_read(&pmcraid_adapter_count));
5916
5917 rc = pci_request_regions(pdev, PMCRAID_DRIVER_NAME);
5918
5919 if (rc < 0) {
5920 dev_err(&pdev->dev,
5921 "Couldn't register memory range of registers\n");
5922 goto out_disable_device;
5923 }
5924
5925 mapped_pci_addr = pci_iomap(pdev, 0, 0);
5926
5927 if (!mapped_pci_addr) {
5928 dev_err(&pdev->dev, "Couldn't map PCI registers memory\n");
5929 rc = -ENOMEM;
5930 goto out_release_regions;
5931 }
5932
5933 pci_set_master(pdev);
5934
5935
5936
5937
5938
5939
5940
5941
5942 if ((sizeof(dma_addr_t) == 4) ||
5943 pci_set_dma_mask(pdev, DMA_BIT_MASK(64)))
5944 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5945
5946
5947
5948
5949 if (rc == 0)
5950 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
5951
5952 if (rc != 0) {
5953 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5954 goto cleanup_nomem;
5955 }
5956
5957 host = scsi_host_alloc(&pmcraid_host_template,
5958 sizeof(struct pmcraid_instance));
5959
5960 if (!host) {
5961 dev_err(&pdev->dev, "scsi_host_alloc failed!\n");
5962 rc = -ENOMEM;
5963 goto cleanup_nomem;
5964 }
5965
5966 host->max_id = PMCRAID_MAX_NUM_TARGETS_PER_BUS;
5967 host->max_lun = PMCRAID_MAX_NUM_LUNS_PER_TARGET;
5968 host->unique_id = host->host_no;
5969 host->max_channel = PMCRAID_MAX_BUS_TO_SCAN;
5970 host->max_cmd_len = PMCRAID_MAX_CDB_LEN;
5971
5972
5973 pinstance = (struct pmcraid_instance *)host->hostdata;
5974 memset(pinstance, 0, sizeof(*pinstance));
5975
5976 pinstance->chip_cfg =
5977 (struct pmcraid_chip_details *)(dev_id->driver_data);
5978
5979 rc = pmcraid_init_instance(pdev, host, mapped_pci_addr);
5980
5981 if (rc < 0) {
5982 dev_err(&pdev->dev, "failed to initialize adapter instance\n");
5983 goto out_scsi_host_put;
5984 }
5985
5986 pci_set_drvdata(pdev, pinstance);
5987
5988
5989 rc = pci_save_state(pinstance->pdev);
5990
5991 if (rc != 0) {
5992 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5993 goto out_scsi_host_put;
5994 }
5995
5996 pmcraid_disable_interrupts(pinstance, ~0);
5997
5998 rc = pmcraid_register_interrupt_handler(pinstance);
5999
6000 if (rc) {
6001 dev_err(&pdev->dev, "couldn't register interrupt handler\n");
6002 goto out_scsi_host_put;
6003 }
6004
6005 pmcraid_init_tasklets(pinstance);
6006
6007
6008 rc = pmcraid_init_buffers(pinstance);
6009
6010 if (rc) {
6011 pmcraid_err("couldn't allocate memory blocks\n");
6012 goto out_unregister_isr;
6013 }
6014
6015
6016 pmcraid_reset_type(pinstance);
6017
6018 pmcraid_enable_interrupts(pinstance, PMCRAID_PCI_INTERRUPTS);
6019
6020
6021
6022
6023 pmcraid_info("starting IOA initialization sequence\n");
6024 if (pmcraid_reset_bringup(pinstance)) {
6025 dev_err(&pdev->dev, "couldn't initialize IOA\n");
6026 rc = 1;
6027 goto out_release_bufs;
6028 }
6029
6030
6031 rc = scsi_add_host(pinstance->host, &pdev->dev);
6032 if (rc != 0) {
6033 pmcraid_err("couldn't add host into mid-layer: %d\n", rc);
6034 goto out_release_bufs;
6035 }
6036
6037 scsi_scan_host(pinstance->host);
6038
6039 rc = pmcraid_setup_chrdev(pinstance);
6040
6041 if (rc != 0) {
6042 pmcraid_err("couldn't create mgmt interface, error: %x\n",
6043 rc);
6044 goto out_remove_host;
6045 }
6046
6047
6048
6049
6050 atomic_set(&pinstance->expose_resources, 1);
6051 schedule_work(&pinstance->worker_q);
6052 return rc;
6053
6054out_remove_host:
6055 scsi_remove_host(host);
6056
6057out_release_bufs:
6058 pmcraid_release_buffers(pinstance);
6059
6060out_unregister_isr:
6061 pmcraid_kill_tasklets(pinstance);
6062 pmcraid_unregister_interrupt_handler(pinstance);
6063
6064out_scsi_host_put:
6065 scsi_host_put(host);
6066
6067cleanup_nomem:
6068 iounmap(mapped_pci_addr);
6069
6070out_release_regions:
6071 pci_release_regions(pdev);
6072
6073out_disable_device:
6074 atomic_dec(&pmcraid_adapter_count);
6075 pci_set_drvdata(pdev, NULL);
6076 pci_disable_device(pdev);
6077 return -ENODEV;
6078}
6079
6080
6081
6082
6083static struct pci_driver pmcraid_driver = {
6084 .name = PMCRAID_DRIVER_NAME,
6085 .id_table = pmcraid_pci_table,
6086 .probe = pmcraid_probe,
6087 .remove = pmcraid_remove,
6088 .suspend = pmcraid_suspend,
6089 .resume = pmcraid_resume,
6090 .shutdown = pmcraid_shutdown
6091};
6092
6093
6094
6095
6096static int __init pmcraid_init(void)
6097{
6098 dev_t dev;
6099 int error;
6100
6101 pmcraid_info("%s Device Driver version: %s\n",
6102 PMCRAID_DRIVER_NAME, PMCRAID_DRIVER_VERSION);
6103
6104 error = alloc_chrdev_region(&dev, 0,
6105 PMCRAID_MAX_ADAPTERS,
6106 PMCRAID_DEVFILE);
6107
6108 if (error) {
6109 pmcraid_err("failed to get a major number for adapters\n");
6110 goto out_init;
6111 }
6112
6113 pmcraid_major = MAJOR(dev);
6114 pmcraid_class = class_create(THIS_MODULE, PMCRAID_DEVFILE);
6115
6116 if (IS_ERR(pmcraid_class)) {
6117 error = PTR_ERR(pmcraid_class);
6118 pmcraid_err("failed to register with with sysfs, error = %x\n",
6119 error);
6120 goto out_unreg_chrdev;
6121 }
6122
6123 error = pmcraid_netlink_init();
6124
6125 if (error)
6126 goto out_unreg_chrdev;
6127
6128 error = pci_register_driver(&pmcraid_driver);
6129
6130 if (error == 0)
6131 goto out_init;
6132
6133 pmcraid_err("failed to register pmcraid driver, error = %x\n",
6134 error);
6135 class_destroy(pmcraid_class);
6136 pmcraid_netlink_release();
6137
6138out_unreg_chrdev:
6139 unregister_chrdev_region(MKDEV(pmcraid_major, 0), PMCRAID_MAX_ADAPTERS);
6140
6141out_init:
6142 return error;
6143}
6144
6145
6146
6147
6148static void __exit pmcraid_exit(void)
6149{
6150 pmcraid_netlink_release();
6151 unregister_chrdev_region(MKDEV(pmcraid_major, 0),
6152 PMCRAID_MAX_ADAPTERS);
6153 pci_unregister_driver(&pmcraid_driver);
6154 class_destroy(pmcraid_class);
6155}
6156
6157module_init(pmcraid_init);
6158module_exit(pmcraid_exit);
6159