2 * ipr.c -- driver for IBM Power Linux RAID adapters
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 * Copyright (C) 2003, 2004 IBM Corporation
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * This driver is used to control the following SCSI adapters:
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
50 * - Tagged command queuing
51 * - Adapter microcode download
53 * - SCSI device hot plug
57 #include <linux/config.h>
59 #include <linux/init.h>
60 #include <linux/types.h>
61 #include <linux/errno.h>
62 #include <linux/kernel.h>
63 #include <linux/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
82 #include <scsi/scsi_request.h>
88 static struct list_head ipr_ioa_head
= LIST_HEAD_INIT(ipr_ioa_head
);
89 static unsigned int ipr_log_level
= IPR_DEFAULT_LOG_LEVEL
;
90 static unsigned int ipr_max_speed
= 1;
91 static int ipr_testmode
= 0;
92 static unsigned int ipr_fastfail
= 0;
93 static unsigned int ipr_transop_timeout
= IPR_OPERATIONAL_TIMEOUT
;
94 static DEFINE_SPINLOCK(ipr_driver_lock
);
96 /* This table describes the differences between DMA controller chips */
97 static const struct ipr_chip_cfg_t ipr_chip_cfg
[] = {
98 { /* Gemstone and Citrine */
100 .cache_line_size
= 0x20,
102 .set_interrupt_mask_reg
= 0x0022C,
103 .clr_interrupt_mask_reg
= 0x00230,
104 .sense_interrupt_mask_reg
= 0x0022C,
105 .clr_interrupt_reg
= 0x00228,
106 .sense_interrupt_reg
= 0x00224,
107 .ioarrin_reg
= 0x00404,
108 .sense_uproc_interrupt_reg
= 0x00214,
109 .set_uproc_interrupt_reg
= 0x00214,
110 .clr_uproc_interrupt_reg
= 0x00218
113 { /* Snipe and Scamp */
115 .cache_line_size
= 0x20,
117 .set_interrupt_mask_reg
= 0x00288,
118 .clr_interrupt_mask_reg
= 0x0028C,
119 .sense_interrupt_mask_reg
= 0x00288,
120 .clr_interrupt_reg
= 0x00284,
121 .sense_interrupt_reg
= 0x00280,
122 .ioarrin_reg
= 0x00504,
123 .sense_uproc_interrupt_reg
= 0x00290,
124 .set_uproc_interrupt_reg
= 0x00290,
125 .clr_uproc_interrupt_reg
= 0x00294
130 static const struct ipr_chip_t ipr_chip
[] = {
131 { PCI_VENDOR_ID_MYLEX
, PCI_DEVICE_ID_IBM_GEMSTONE
, &ipr_chip_cfg
[0] },
132 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_CITRINE
, &ipr_chip_cfg
[0] },
133 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_SNIPE
, &ipr_chip_cfg
[1] },
134 { PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_SCAMP
, &ipr_chip_cfg
[1] }
137 static int ipr_max_bus_speeds
[] = {
138 IPR_80MBs_SCSI_RATE
, IPR_U160_SCSI_RATE
, IPR_U320_SCSI_RATE
141 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
142 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
143 module_param_named(max_speed
, ipr_max_speed
, uint
, 0);
144 MODULE_PARM_DESC(max_speed
, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
145 module_param_named(log_level
, ipr_log_level
, uint
, 0);
146 MODULE_PARM_DESC(log_level
, "Set to 0 - 4 for increasing verbosity of device driver");
147 module_param_named(testmode
, ipr_testmode
, int, 0);
148 MODULE_PARM_DESC(testmode
, "DANGEROUS!!! Allows unsupported configurations");
149 module_param_named(fastfail
, ipr_fastfail
, int, 0);
150 MODULE_PARM_DESC(fastfail
, "Reduce timeouts and retries");
151 module_param_named(transop_timeout
, ipr_transop_timeout
, int, 0);
152 MODULE_PARM_DESC(transop_timeout
, "Time in seconds to wait for adapter to come operational (default: 300)");
153 MODULE_LICENSE("GPL");
154 MODULE_VERSION(IPR_DRIVER_VERSION
);
156 static const char *ipr_gpdd_dev_end_states
[] = {
158 "Terminated by host",
159 "Terminated by device reset",
160 "Terminated by bus reset",
162 "Command not started"
165 static const char *ipr_gpdd_dev_bus_phases
[] = {
179 /* A constant array of IOASCs/URCs/Error Messages */
181 struct ipr_error_table_t ipr_error_table
[] = {
183 "8155: An unknown error was received"},
185 "Soft underlength error"},
187 "Command to be cancelled not found"},
189 "Qualified success"},
191 "FFFE: Soft device bus error recovered by the IOA"},
193 "FFF9: Device sector reassign successful"},
195 "FFF7: Media error recovered by device rewrite procedures"},
197 "7001: IOA sector reassignment successful"},
199 "FFF9: Soft media error. Sector reassignment recommended"},
201 "FFF7: Media error recovered by IOA rewrite procedures"},
203 "FF3D: Soft PCI bus error recovered by the IOA"},
205 "FFF6: Device hardware error recovered by the IOA"},
207 "FFF6: Device hardware error recovered by the device"},
209 "FF3D: Soft IOA error recovered by the IOA"},
211 "FFFA: Undefined device response recovered by the IOA"},
213 "FFF6: Device bus error, message or command phase"},
215 "FFF6: Failure prediction threshold exceeded"},
217 "8009: Impending cache battery pack failure"},
219 "34FF: Disk device format in progress"},
221 "Synchronization required"},
223 "No ready, IOA shutdown"},
225 "Not ready, IOA has been shutdown"},
227 "3020: Storage subsystem configuration error"},
229 "FFF5: Medium error, data unreadable, recommend reassign"},
231 "7000: Medium error, data unreadable, do not reassign"},
233 "FFF3: Disk media format bad"},
235 "3002: Addressed device failed to respond to selection"},
237 "3100: Device bus error"},
239 "3109: IOA timed out a device command"},
241 "3120: SCSI bus is not operational"},
243 "9000: IOA reserved area data check"},
245 "9001: IOA reserved area invalid data pattern"},
247 "9002: IOA reserved area LRC error"},
249 "102E: Out of alternate sectors for disk storage"},
251 "FFF4: Data transfer underlength error"},
253 "FFF4: Data transfer overlength error"},
255 "3400: Logical unit failure"},
257 "FFF4: Device microcode is corrupt"},
259 "8150: PCI bus error"},
261 "Unsupported device bus message received"},
263 "FFF4: Disk device problem"},
265 "8150: Permanent IOA failure"},
267 "3010: Disk device returned wrong response to IOA"},
269 "8151: IOA microcode error"},
271 "Device bus status error"},
273 "8157: IOA error requiring IOA reset to recover"},
275 "Message reject received from the device"},
277 "8008: A permanent cache battery pack failure occurred"},
279 "9090: Disk unit has been modified after the last known status"},
281 "9081: IOA detected device error"},
283 "9082: IOA detected device error"},
285 "3110: Device bus error, message or command phase"},
287 "9091: Incorrect hardware configuration change has been detected"},
289 "FFF4: Command to logical unit failed"},
291 "Illegal request, invalid request type or request packet"},
293 "Illegal request, invalid resource handle"},
295 "Illegal request, invalid field in parameter list"},
297 "Illegal request, parameter not supported"},
299 "Illegal request, parameter value invalid"},
301 "Illegal request, command sequence error"},
303 "9031: Array protection temporarily suspended, protection resuming"},
305 "9040: Array protection temporarily suspended, protection resuming"},
307 "FFFB: SCSI bus was reset"},
309 "FFFE: SCSI bus transition to single ended"},
311 "FFFE: SCSI bus transition to LVD"},
313 "FFFB: SCSI bus was reset by another initiator"},
315 "3029: A device replacement has occurred"},
317 "9051: IOA cache data exists for a missing or failed device"},
319 "9025: Disk unit is not supported at its physical location"},
321 "3020: IOA detected a SCSI bus configuration error"},
323 "3150: SCSI bus configuration error"},
325 "9041: Array protection temporarily suspended"},
327 "9042: Corrupt array parity detected on specified device"},
329 "9030: Array no longer protected due to missing or failed disk unit"},
331 "9032: Array exposed but still protected"},
333 "Failure due to other device"},
335 "9008: IOA does not support functions expected by devices"},
337 "9010: Cache data associated with attached devices cannot be found"},
339 "9011: Cache data belongs to devices other than those attached"},
341 "9020: Array missing 2 or more devices with only 1 device present"},
343 "9021: Array missing 2 or more devices with 2 or more devices present"},
345 "9022: Exposed array is missing a required device"},
347 "9023: Array member(s) not at required physical locations"},
349 "9024: Array not functional due to present hardware configuration"},
351 "9026: Array not functional due to present hardware configuration"},
353 "9027: Array is missing a device and parity is out of sync"},
355 "9028: Maximum number of arrays already exist"},
357 "9050: Required cache data cannot be located for a disk unit"},
359 "9052: Cache data exists for a device that has been modified"},
361 "9054: IOA resources not available due to previous problems"},
363 "9092: Disk unit requires initialization before use"},
365 "9029: Incorrect hardware configuration change has been detected"},
367 "9060: One or more disk pairs are missing from an array"},
369 "9061: One or more disks are missing from an array"},
371 "9062: One or more disks are missing from an array"},
373 "9063: Maximum number of functional arrays has been exceeded"},
375 "Aborted command, invalid descriptor"},
377 "Command terminated by host"}
380 static const struct ipr_ses_table_entry ipr_ses_table
[] = {
381 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
382 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
383 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
384 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
385 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
386 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
387 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
388 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
389 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
390 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
391 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
392 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
393 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
397 * Function Prototypes
399 static int ipr_reset_alert(struct ipr_cmnd
*);
400 static void ipr_process_ccn(struct ipr_cmnd
*);
401 static void ipr_process_error(struct ipr_cmnd
*);
402 static void ipr_reset_ioa_job(struct ipr_cmnd
*);
403 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg
*,
404 enum ipr_shutdown_type
);
406 #ifdef CONFIG_SCSI_IPR_TRACE
408 * ipr_trc_hook - Add a trace entry to the driver trace
409 * @ipr_cmd: ipr command struct
411 * @add_data: additional data
416 static void ipr_trc_hook(struct ipr_cmnd
*ipr_cmd
,
417 u8 type
, u32 add_data
)
419 struct ipr_trace_entry
*trace_entry
;
420 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
422 trace_entry
= &ioa_cfg
->trace
[ioa_cfg
->trace_index
++];
423 trace_entry
->time
= jiffies
;
424 trace_entry
->op_code
= ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[0];
425 trace_entry
->type
= type
;
426 trace_entry
->cmd_index
= ipr_cmd
->cmd_index
;
427 trace_entry
->res_handle
= ipr_cmd
->ioarcb
.res_handle
;
428 trace_entry
->u
.add_data
= add_data
;
431 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
435 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
436 * @ipr_cmd: ipr command struct
441 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd
*ipr_cmd
)
443 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
444 struct ipr_ioasa
*ioasa
= &ipr_cmd
->ioasa
;
446 memset(&ioarcb
->cmd_pkt
, 0, sizeof(struct ipr_cmd_pkt
));
447 ioarcb
->write_data_transfer_length
= 0;
448 ioarcb
->read_data_transfer_length
= 0;
449 ioarcb
->write_ioadl_len
= 0;
450 ioarcb
->read_ioadl_len
= 0;
452 ioasa
->residual_data_len
= 0;
454 ipr_cmd
->scsi_cmd
= NULL
;
455 ipr_cmd
->sense_buffer
[0] = 0;
456 ipr_cmd
->dma_use_sg
= 0;
460 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
461 * @ipr_cmd: ipr command struct
466 static void ipr_init_ipr_cmnd(struct ipr_cmnd
*ipr_cmd
)
468 ipr_reinit_ipr_cmnd(ipr_cmd
);
469 ipr_cmd
->u
.scratch
= 0;
470 ipr_cmd
->sibling
= NULL
;
471 init_timer(&ipr_cmd
->timer
);
475 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
476 * @ioa_cfg: ioa config struct
479 * pointer to ipr command struct
482 struct ipr_cmnd
*ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg
*ioa_cfg
)
484 struct ipr_cmnd
*ipr_cmd
;
486 ipr_cmd
= list_entry(ioa_cfg
->free_q
.next
, struct ipr_cmnd
, queue
);
487 list_del(&ipr_cmd
->queue
);
488 ipr_init_ipr_cmnd(ipr_cmd
);
494 * ipr_unmap_sglist - Unmap scatterlist if mapped
495 * @ioa_cfg: ioa config struct
496 * @ipr_cmd: ipr command struct
501 static void ipr_unmap_sglist(struct ipr_ioa_cfg
*ioa_cfg
,
502 struct ipr_cmnd
*ipr_cmd
)
504 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
506 if (ipr_cmd
->dma_use_sg
) {
507 if (scsi_cmd
->use_sg
> 0) {
508 pci_unmap_sg(ioa_cfg
->pdev
, scsi_cmd
->request_buffer
,
510 scsi_cmd
->sc_data_direction
);
512 pci_unmap_single(ioa_cfg
->pdev
, ipr_cmd
->dma_handle
,
513 scsi_cmd
->request_bufflen
,
514 scsi_cmd
->sc_data_direction
);
520 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
521 * @ioa_cfg: ioa config struct
522 * @clr_ints: interrupts to clear
524 * This function masks all interrupts on the adapter, then clears the
525 * interrupts specified in the mask
530 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg
*ioa_cfg
,
533 volatile u32 int_reg
;
535 /* Stop new interrupts */
536 ioa_cfg
->allow_interrupts
= 0;
538 /* Set interrupt mask to stop all new interrupts */
539 writel(~0, ioa_cfg
->regs
.set_interrupt_mask_reg
);
541 /* Clear any pending interrupts */
542 writel(clr_ints
, ioa_cfg
->regs
.clr_interrupt_reg
);
543 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
);
547 * ipr_save_pcix_cmd_reg - Save PCI-X command register
548 * @ioa_cfg: ioa config struct
551 * 0 on success / -EIO on failure
553 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg
*ioa_cfg
)
555 int pcix_cmd_reg
= pci_find_capability(ioa_cfg
->pdev
, PCI_CAP_ID_PCIX
);
557 if (pcix_cmd_reg
== 0) {
558 dev_err(&ioa_cfg
->pdev
->dev
, "Failed to save PCI-X command register\n");
562 if (pci_read_config_word(ioa_cfg
->pdev
, pcix_cmd_reg
+ PCI_X_CMD
,
563 &ioa_cfg
->saved_pcix_cmd_reg
) != PCIBIOS_SUCCESSFUL
) {
564 dev_err(&ioa_cfg
->pdev
->dev
, "Failed to save PCI-X command register\n");
568 ioa_cfg
->saved_pcix_cmd_reg
|= PCI_X_CMD_DPERR_E
| PCI_X_CMD_ERO
;
573 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
574 * @ioa_cfg: ioa config struct
577 * 0 on success / -EIO on failure
579 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg
*ioa_cfg
)
581 int pcix_cmd_reg
= pci_find_capability(ioa_cfg
->pdev
, PCI_CAP_ID_PCIX
);
584 if (pci_write_config_word(ioa_cfg
->pdev
, pcix_cmd_reg
+ PCI_X_CMD
,
585 ioa_cfg
->saved_pcix_cmd_reg
) != PCIBIOS_SUCCESSFUL
) {
586 dev_err(&ioa_cfg
->pdev
->dev
, "Failed to setup PCI-X command register\n");
590 dev_err(&ioa_cfg
->pdev
->dev
,
591 "Failed to setup PCI-X command register\n");
599 * ipr_scsi_eh_done - mid-layer done function for aborted ops
600 * @ipr_cmd: ipr command struct
602 * This function is invoked by the interrupt handler for
603 * ops generated by the SCSI mid-layer which are being aborted.
608 static void ipr_scsi_eh_done(struct ipr_cmnd
*ipr_cmd
)
610 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
611 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
613 scsi_cmd
->result
|= (DID_ERROR
<< 16);
615 ipr_unmap_sglist(ioa_cfg
, ipr_cmd
);
616 scsi_cmd
->scsi_done(scsi_cmd
);
617 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
621 * ipr_fail_all_ops - Fails all outstanding ops.
622 * @ioa_cfg: ioa config struct
624 * This function fails all outstanding ops.
629 static void ipr_fail_all_ops(struct ipr_ioa_cfg
*ioa_cfg
)
631 struct ipr_cmnd
*ipr_cmd
, *temp
;
634 list_for_each_entry_safe(ipr_cmd
, temp
, &ioa_cfg
->pending_q
, queue
) {
635 list_del(&ipr_cmd
->queue
);
637 ipr_cmd
->ioasa
.ioasc
= cpu_to_be32(IPR_IOASC_IOA_WAS_RESET
);
638 ipr_cmd
->ioasa
.ilid
= cpu_to_be32(IPR_DRIVER_ILID
);
640 if (ipr_cmd
->scsi_cmd
)
641 ipr_cmd
->done
= ipr_scsi_eh_done
;
643 ipr_trc_hook(ipr_cmd
, IPR_TRACE_FINISH
, IPR_IOASC_IOA_WAS_RESET
);
644 del_timer(&ipr_cmd
->timer
);
645 ipr_cmd
->done(ipr_cmd
);
652 * ipr_do_req - Send driver initiated requests.
653 * @ipr_cmd: ipr command struct
654 * @done: done function
655 * @timeout_func: timeout function
656 * @timeout: timeout value
658 * This function sends the specified command to the adapter with the
659 * timeout given. The done function is invoked on command completion.
664 static void ipr_do_req(struct ipr_cmnd
*ipr_cmd
,
665 void (*done
) (struct ipr_cmnd
*),
666 void (*timeout_func
) (struct ipr_cmnd
*), u32 timeout
)
668 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
670 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->pending_q
);
672 ipr_cmd
->done
= done
;
674 ipr_cmd
->timer
.data
= (unsigned long) ipr_cmd
;
675 ipr_cmd
->timer
.expires
= jiffies
+ timeout
;
676 ipr_cmd
->timer
.function
= (void (*)(unsigned long))timeout_func
;
678 add_timer(&ipr_cmd
->timer
);
680 ipr_trc_hook(ipr_cmd
, IPR_TRACE_START
, 0);
683 writel(be32_to_cpu(ipr_cmd
->ioarcb
.ioarcb_host_pci_addr
),
684 ioa_cfg
->regs
.ioarrin_reg
);
688 * ipr_internal_cmd_done - Op done function for an internally generated op.
689 * @ipr_cmd: ipr command struct
691 * This function is the op done function for an internally generated,
692 * blocking op. It simply wakes the sleeping thread.
697 static void ipr_internal_cmd_done(struct ipr_cmnd
*ipr_cmd
)
699 if (ipr_cmd
->sibling
)
700 ipr_cmd
->sibling
= NULL
;
702 complete(&ipr_cmd
->completion
);
706 * ipr_send_blocking_cmd - Send command and sleep on its completion.
707 * @ipr_cmd: ipr command struct
708 * @timeout_func: function to invoke if command times out
714 static void ipr_send_blocking_cmd(struct ipr_cmnd
*ipr_cmd
,
715 void (*timeout_func
) (struct ipr_cmnd
*ipr_cmd
),
718 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
720 init_completion(&ipr_cmd
->completion
);
721 ipr_do_req(ipr_cmd
, ipr_internal_cmd_done
, timeout_func
, timeout
);
723 spin_unlock_irq(ioa_cfg
->host
->host_lock
);
724 wait_for_completion(&ipr_cmd
->completion
);
725 spin_lock_irq(ioa_cfg
->host
->host_lock
);
729 * ipr_send_hcam - Send an HCAM to the adapter.
730 * @ioa_cfg: ioa config struct
732 * @hostrcb: hostrcb struct
734 * This function will send a Host Controlled Async command to the adapter.
735 * If HCAMs are currently not allowed to be issued to the adapter, it will
736 * place the hostrcb on the free queue.
741 static void ipr_send_hcam(struct ipr_ioa_cfg
*ioa_cfg
, u8 type
,
742 struct ipr_hostrcb
*hostrcb
)
744 struct ipr_cmnd
*ipr_cmd
;
745 struct ipr_ioarcb
*ioarcb
;
747 if (ioa_cfg
->allow_cmds
) {
748 ipr_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
749 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->pending_q
);
750 list_add_tail(&hostrcb
->queue
, &ioa_cfg
->hostrcb_pending_q
);
752 ipr_cmd
->u
.hostrcb
= hostrcb
;
753 ioarcb
= &ipr_cmd
->ioarcb
;
755 ioarcb
->res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
756 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_HCAM
;
757 ioarcb
->cmd_pkt
.cdb
[0] = IPR_HOST_CONTROLLED_ASYNC
;
758 ioarcb
->cmd_pkt
.cdb
[1] = type
;
759 ioarcb
->cmd_pkt
.cdb
[7] = (sizeof(hostrcb
->hcam
) >> 8) & 0xff;
760 ioarcb
->cmd_pkt
.cdb
[8] = sizeof(hostrcb
->hcam
) & 0xff;
762 ioarcb
->read_data_transfer_length
= cpu_to_be32(sizeof(hostrcb
->hcam
));
763 ioarcb
->read_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
764 ipr_cmd
->ioadl
[0].flags_and_data_len
=
765 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST
| sizeof(hostrcb
->hcam
));
766 ipr_cmd
->ioadl
[0].address
= cpu_to_be32(hostrcb
->hostrcb_dma
);
768 if (type
== IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE
)
769 ipr_cmd
->done
= ipr_process_ccn
;
771 ipr_cmd
->done
= ipr_process_error
;
773 ipr_trc_hook(ipr_cmd
, IPR_TRACE_START
, IPR_IOA_RES_ADDR
);
776 writel(be32_to_cpu(ipr_cmd
->ioarcb
.ioarcb_host_pci_addr
),
777 ioa_cfg
->regs
.ioarrin_reg
);
779 list_add_tail(&hostrcb
->queue
, &ioa_cfg
->hostrcb_free_q
);
784 * ipr_init_res_entry - Initialize a resource entry struct.
785 * @res: resource entry struct
790 static void ipr_init_res_entry(struct ipr_resource_entry
*res
)
792 res
->needs_sync_complete
= 1;
795 res
->del_from_ml
= 0;
796 res
->resetting_device
= 0;
801 * ipr_handle_config_change - Handle a config change from the adapter
802 * @ioa_cfg: ioa config struct
808 static void ipr_handle_config_change(struct ipr_ioa_cfg
*ioa_cfg
,
809 struct ipr_hostrcb
*hostrcb
)
811 struct ipr_resource_entry
*res
= NULL
;
812 struct ipr_config_table_entry
*cfgte
;
815 cfgte
= &hostrcb
->hcam
.u
.ccn
.cfgte
;
817 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
818 if (!memcmp(&res
->cfgte
.res_addr
, &cfgte
->res_addr
,
819 sizeof(cfgte
->res_addr
))) {
826 if (list_empty(&ioa_cfg
->free_res_q
)) {
827 ipr_send_hcam(ioa_cfg
,
828 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE
,
833 res
= list_entry(ioa_cfg
->free_res_q
.next
,
834 struct ipr_resource_entry
, queue
);
836 list_del(&res
->queue
);
837 ipr_init_res_entry(res
);
838 list_add_tail(&res
->queue
, &ioa_cfg
->used_res_q
);
841 memcpy(&res
->cfgte
, cfgte
, sizeof(struct ipr_config_table_entry
));
843 if (hostrcb
->hcam
.notify_type
== IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY
) {
845 res
->sdev
->hostdata
= NULL
;
846 res
->del_from_ml
= 1;
847 if (ioa_cfg
->allow_ml_add_del
)
848 schedule_work(&ioa_cfg
->work_q
);
850 list_move_tail(&res
->queue
, &ioa_cfg
->free_res_q
);
851 } else if (!res
->sdev
) {
853 if (ioa_cfg
->allow_ml_add_del
)
854 schedule_work(&ioa_cfg
->work_q
);
857 ipr_send_hcam(ioa_cfg
, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE
, hostrcb
);
861 * ipr_process_ccn - Op done function for a CCN.
862 * @ipr_cmd: ipr command struct
864 * This function is the op done function for a configuration
865 * change notification host controlled async from the adapter.
870 static void ipr_process_ccn(struct ipr_cmnd
*ipr_cmd
)
872 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
873 struct ipr_hostrcb
*hostrcb
= ipr_cmd
->u
.hostrcb
;
874 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
876 list_del(&hostrcb
->queue
);
877 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
880 if (ioasc
!= IPR_IOASC_IOA_WAS_RESET
)
881 dev_err(&ioa_cfg
->pdev
->dev
,
882 "Host RCB failed with IOASC: 0x%08X\n", ioasc
);
884 ipr_send_hcam(ioa_cfg
, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE
, hostrcb
);
886 ipr_handle_config_change(ioa_cfg
, hostrcb
);
891 * ipr_log_vpd - Log the passed VPD to the error log.
892 * @vpids: vendor/product id struct
893 * @serial_num: serial number string
898 static void ipr_log_vpd(struct ipr_std_inq_vpids
*vpids
, u8
*serial_num
)
900 char buffer
[IPR_VENDOR_ID_LEN
+ IPR_PROD_ID_LEN
901 + IPR_SERIAL_NUM_LEN
];
903 memcpy(buffer
, vpids
->vendor_id
, IPR_VENDOR_ID_LEN
);
904 memcpy(buffer
+ IPR_VENDOR_ID_LEN
, vpids
->product_id
,
906 buffer
[IPR_VENDOR_ID_LEN
+ IPR_PROD_ID_LEN
] = '\0';
907 ipr_err("Vendor/Product ID: %s\n", buffer
);
909 memcpy(buffer
, serial_num
, IPR_SERIAL_NUM_LEN
);
910 buffer
[IPR_SERIAL_NUM_LEN
] = '\0';
911 ipr_err(" Serial Number: %s\n", buffer
);
915 * ipr_log_cache_error - Log a cache error.
916 * @ioa_cfg: ioa config struct
917 * @hostrcb: hostrcb struct
922 static void ipr_log_cache_error(struct ipr_ioa_cfg
*ioa_cfg
,
923 struct ipr_hostrcb
*hostrcb
)
925 struct ipr_hostrcb_type_02_error
*error
=
926 &hostrcb
->hcam
.u
.error
.u
.type_02_error
;
928 ipr_err("-----Current Configuration-----\n");
929 ipr_err("Cache Directory Card Information:\n");
930 ipr_log_vpd(&error
->ioa_vpids
, error
->ioa_sn
);
931 ipr_err("Adapter Card Information:\n");
932 ipr_log_vpd(&error
->cfc_vpids
, error
->cfc_sn
);
934 ipr_err("-----Expected Configuration-----\n");
935 ipr_err("Cache Directory Card Information:\n");
936 ipr_log_vpd(&error
->ioa_last_attached_to_cfc_vpids
,
937 error
->ioa_last_attached_to_cfc_sn
);
938 ipr_err("Adapter Card Information:\n");
939 ipr_log_vpd(&error
->cfc_last_attached_to_ioa_vpids
,
940 error
->cfc_last_attached_to_ioa_sn
);
942 ipr_err("Additional IOA Data: %08X %08X %08X\n",
943 be32_to_cpu(error
->ioa_data
[0]),
944 be32_to_cpu(error
->ioa_data
[1]),
945 be32_to_cpu(error
->ioa_data
[2]));
949 * ipr_log_config_error - Log a configuration error.
950 * @ioa_cfg: ioa config struct
951 * @hostrcb: hostrcb struct
956 static void ipr_log_config_error(struct ipr_ioa_cfg
*ioa_cfg
,
957 struct ipr_hostrcb
*hostrcb
)
959 int errors_logged
, i
;
960 struct ipr_hostrcb_device_data_entry
*dev_entry
;
961 struct ipr_hostrcb_type_03_error
*error
;
963 error
= &hostrcb
->hcam
.u
.error
.u
.type_03_error
;
964 errors_logged
= be32_to_cpu(error
->errors_logged
);
966 ipr_err("Device Errors Detected/Logged: %d/%d\n",
967 be32_to_cpu(error
->errors_detected
), errors_logged
);
969 dev_entry
= error
->dev_entry
;
971 for (i
= 0; i
< errors_logged
; i
++, dev_entry
++) {
974 if (dev_entry
->dev_res_addr
.bus
>= IPR_MAX_NUM_BUSES
) {
975 ipr_err("Device %d: missing\n", i
+ 1);
977 ipr_err("Device %d: %d:%d:%d:%d\n", i
+ 1,
978 ioa_cfg
->host
->host_no
, dev_entry
->dev_res_addr
.bus
,
979 dev_entry
->dev_res_addr
.target
, dev_entry
->dev_res_addr
.lun
);
981 ipr_log_vpd(&dev_entry
->dev_vpids
, dev_entry
->dev_sn
);
983 ipr_err("-----New Device Information-----\n");
984 ipr_log_vpd(&dev_entry
->new_dev_vpids
, dev_entry
->new_dev_sn
);
986 ipr_err("Cache Directory Card Information:\n");
987 ipr_log_vpd(&dev_entry
->ioa_last_with_dev_vpids
,
988 dev_entry
->ioa_last_with_dev_sn
);
990 ipr_err("Adapter Card Information:\n");
991 ipr_log_vpd(&dev_entry
->cfc_last_with_dev_vpids
,
992 dev_entry
->cfc_last_with_dev_sn
);
994 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
995 be32_to_cpu(dev_entry
->ioa_data
[0]),
996 be32_to_cpu(dev_entry
->ioa_data
[1]),
997 be32_to_cpu(dev_entry
->ioa_data
[2]),
998 be32_to_cpu(dev_entry
->ioa_data
[3]),
999 be32_to_cpu(dev_entry
->ioa_data
[4]));
1004 * ipr_log_array_error - Log an array configuration error.
1005 * @ioa_cfg: ioa config struct
1006 * @hostrcb: hostrcb struct
1011 static void ipr_log_array_error(struct ipr_ioa_cfg
*ioa_cfg
,
1012 struct ipr_hostrcb
*hostrcb
)
1015 struct ipr_hostrcb_type_04_error
*error
;
1016 struct ipr_hostrcb_array_data_entry
*array_entry
;
1017 const u8 zero_sn
[IPR_SERIAL_NUM_LEN
] = { [0 ... IPR_SERIAL_NUM_LEN
-1] = '0' };
1019 error
= &hostrcb
->hcam
.u
.error
.u
.type_04_error
;
1023 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1024 error
->protection_level
,
1025 ioa_cfg
->host
->host_no
,
1026 error
->last_func_vset_res_addr
.bus
,
1027 error
->last_func_vset_res_addr
.target
,
1028 error
->last_func_vset_res_addr
.lun
);
1032 array_entry
= error
->array_member
;
1034 for (i
= 0; i
< 18; i
++) {
1035 if (!memcmp(array_entry
->serial_num
, zero_sn
, IPR_SERIAL_NUM_LEN
))
1038 if (be32_to_cpu(error
->exposed_mode_adn
) == i
) {
1039 ipr_err("Exposed Array Member %d:\n", i
);
1041 ipr_err("Array Member %d:\n", i
);
1044 ipr_log_vpd(&array_entry
->vpids
, array_entry
->serial_num
);
1046 if (array_entry
->dev_res_addr
.bus
>= IPR_MAX_NUM_BUSES
) {
1047 ipr_err("Current Location: unknown\n");
1049 ipr_err("Current Location: %d:%d:%d:%d\n",
1050 ioa_cfg
->host
->host_no
,
1051 array_entry
->dev_res_addr
.bus
,
1052 array_entry
->dev_res_addr
.target
,
1053 array_entry
->dev_res_addr
.lun
);
1056 if (array_entry
->expected_dev_res_addr
.bus
>= IPR_MAX_NUM_BUSES
) {
1057 ipr_err("Expected Location: unknown\n");
1059 ipr_err("Expected Location: %d:%d:%d:%d\n",
1060 ioa_cfg
->host
->host_no
,
1061 array_entry
->expected_dev_res_addr
.bus
,
1062 array_entry
->expected_dev_res_addr
.target
,
1063 array_entry
->expected_dev_res_addr
.lun
);
1069 array_entry
= error
->array_member2
;
1076 * ipr_log_generic_error - Log an adapter error.
1077 * @ioa_cfg: ioa config struct
1078 * @hostrcb: hostrcb struct
1083 static void ipr_log_generic_error(struct ipr_ioa_cfg
*ioa_cfg
,
1084 struct ipr_hostrcb
*hostrcb
)
1087 int ioa_data_len
= be32_to_cpu(hostrcb
->hcam
.length
);
1089 if (ioa_data_len
== 0)
1092 ipr_err("IOA Error Data:\n");
1093 ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
1095 for (i
= 0; i
< ioa_data_len
/ 4; i
+= 4) {
1096 ipr_err("%08X: %08X %08X %08X %08X\n", i
*4,
1097 be32_to_cpu(hostrcb
->hcam
.u
.raw
.data
[i
]),
1098 be32_to_cpu(hostrcb
->hcam
.u
.raw
.data
[i
+1]),
1099 be32_to_cpu(hostrcb
->hcam
.u
.raw
.data
[i
+2]),
1100 be32_to_cpu(hostrcb
->hcam
.u
.raw
.data
[i
+3]));
1105 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1108 * This function will return the index of into the ipr_error_table
1109 * for the specified IOASC. If the IOASC is not in the table,
1110 * 0 will be returned, which points to the entry used for unknown errors.
1113 * index into the ipr_error_table
1115 static u32
ipr_get_error(u32 ioasc
)
1119 for (i
= 0; i
< ARRAY_SIZE(ipr_error_table
); i
++)
1120 if (ipr_error_table
[i
].ioasc
== ioasc
)
1127 * ipr_handle_log_data - Log an adapter error.
1128 * @ioa_cfg: ioa config struct
1129 * @hostrcb: hostrcb struct
1131 * This function logs an adapter error to the system.
1136 static void ipr_handle_log_data(struct ipr_ioa_cfg
*ioa_cfg
,
1137 struct ipr_hostrcb
*hostrcb
)
1142 if (hostrcb
->hcam
.notify_type
!= IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY
)
1145 if (hostrcb
->hcam
.notifications_lost
== IPR_HOST_RCB_NOTIFICATIONS_LOST
)
1146 dev_err(&ioa_cfg
->pdev
->dev
, "Error notifications lost\n");
1148 ioasc
= be32_to_cpu(hostrcb
->hcam
.u
.error
.failing_dev_ioasc
);
1150 if (ioasc
== IPR_IOASC_BUS_WAS_RESET
||
1151 ioasc
== IPR_IOASC_BUS_WAS_RESET_BY_OTHER
) {
1152 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1153 scsi_report_bus_reset(ioa_cfg
->host
,
1154 hostrcb
->hcam
.u
.error
.failing_dev_res_addr
.bus
);
1157 error_index
= ipr_get_error(ioasc
);
1159 if (!ipr_error_table
[error_index
].log_hcam
)
1162 if (ipr_is_device(&hostrcb
->hcam
.u
.error
.failing_dev_res_addr
)) {
1163 ipr_res_err(ioa_cfg
, hostrcb
->hcam
.u
.error
.failing_dev_res_addr
,
1164 "%s\n", ipr_error_table
[error_index
].error
);
1166 dev_err(&ioa_cfg
->pdev
->dev
, "%s\n",
1167 ipr_error_table
[error_index
].error
);
1170 /* Set indication we have logged an error */
1171 ioa_cfg
->errors_logged
++;
1173 if (ioa_cfg
->log_level
< IPR_DEFAULT_LOG_LEVEL
)
1176 switch (hostrcb
->hcam
.overlay_id
) {
1177 case IPR_HOST_RCB_OVERLAY_ID_1
:
1178 ipr_log_generic_error(ioa_cfg
, hostrcb
);
1180 case IPR_HOST_RCB_OVERLAY_ID_2
:
1181 ipr_log_cache_error(ioa_cfg
, hostrcb
);
1183 case IPR_HOST_RCB_OVERLAY_ID_3
:
1184 ipr_log_config_error(ioa_cfg
, hostrcb
);
1186 case IPR_HOST_RCB_OVERLAY_ID_4
:
1187 case IPR_HOST_RCB_OVERLAY_ID_6
:
1188 ipr_log_array_error(ioa_cfg
, hostrcb
);
1190 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT
:
1191 ipr_log_generic_error(ioa_cfg
, hostrcb
);
1194 dev_err(&ioa_cfg
->pdev
->dev
,
1195 "Unknown error received. Overlay ID: %d\n",
1196 hostrcb
->hcam
.overlay_id
);
1202 * ipr_process_error - Op done function for an adapter error log.
1203 * @ipr_cmd: ipr command struct
1205 * This function is the op done function for an error log host
1206 * controlled async from the adapter. It will log the error and
1207 * send the HCAM back to the adapter.
1212 static void ipr_process_error(struct ipr_cmnd
*ipr_cmd
)
1214 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
1215 struct ipr_hostrcb
*hostrcb
= ipr_cmd
->u
.hostrcb
;
1216 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
1218 list_del(&hostrcb
->queue
);
1219 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
1222 ipr_handle_log_data(ioa_cfg
, hostrcb
);
1223 } else if (ioasc
!= IPR_IOASC_IOA_WAS_RESET
) {
1224 dev_err(&ioa_cfg
->pdev
->dev
,
1225 "Host RCB failed with IOASC: 0x%08X\n", ioasc
);
1228 ipr_send_hcam(ioa_cfg
, IPR_HCAM_CDB_OP_CODE_LOG_DATA
, hostrcb
);
1232 * ipr_timeout - An internally generated op has timed out.
1233 * @ipr_cmd: ipr command struct
1235 * This function blocks host requests and initiates an
1241 static void ipr_timeout(struct ipr_cmnd
*ipr_cmd
)
1243 unsigned long lock_flags
= 0;
1244 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
1247 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1249 ioa_cfg
->errors_logged
++;
1250 dev_err(&ioa_cfg
->pdev
->dev
,
1251 "Adapter being reset due to command timeout.\n");
1253 if (WAIT_FOR_DUMP
== ioa_cfg
->sdt_state
)
1254 ioa_cfg
->sdt_state
= GET_DUMP
;
1256 if (!ioa_cfg
->in_reset_reload
|| ioa_cfg
->reset_cmd
== ipr_cmd
)
1257 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
1259 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1264 * ipr_oper_timeout - Adapter timed out transitioning to operational
1265 * @ipr_cmd: ipr command struct
1267 * This function blocks host requests and initiates an
1273 static void ipr_oper_timeout(struct ipr_cmnd
*ipr_cmd
)
1275 unsigned long lock_flags
= 0;
1276 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
1279 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1281 ioa_cfg
->errors_logged
++;
1282 dev_err(&ioa_cfg
->pdev
->dev
,
1283 "Adapter timed out transitioning to operational.\n");
1285 if (WAIT_FOR_DUMP
== ioa_cfg
->sdt_state
)
1286 ioa_cfg
->sdt_state
= GET_DUMP
;
1288 if (!ioa_cfg
->in_reset_reload
|| ioa_cfg
->reset_cmd
== ipr_cmd
) {
1290 ioa_cfg
->reset_retries
+= IPR_NUM_RESET_RELOAD_RETRIES
;
1291 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
1294 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1299 * ipr_reset_reload - Reset/Reload the IOA
1300 * @ioa_cfg: ioa config struct
1301 * @shutdown_type: shutdown type
1303 * This function resets the adapter and re-initializes it.
1304 * This function assumes that all new host commands have been stopped.
1308 static int ipr_reset_reload(struct ipr_ioa_cfg
*ioa_cfg
,
1309 enum ipr_shutdown_type shutdown_type
)
1311 if (!ioa_cfg
->in_reset_reload
)
1312 ipr_initiate_ioa_reset(ioa_cfg
, shutdown_type
);
1314 spin_unlock_irq(ioa_cfg
->host
->host_lock
);
1315 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
1316 spin_lock_irq(ioa_cfg
->host
->host_lock
);
1318 /* If we got hit with a host reset while we were already resetting
1319 the adapter for some reason, and the reset failed. */
1320 if (ioa_cfg
->ioa_is_dead
) {
1329 * ipr_find_ses_entry - Find matching SES in SES table
1330 * @res: resource entry struct of SES
1333 * pointer to SES table entry / NULL on failure
1335 static const struct ipr_ses_table_entry
*
1336 ipr_find_ses_entry(struct ipr_resource_entry
*res
)
1339 const struct ipr_ses_table_entry
*ste
= ipr_ses_table
;
1341 for (i
= 0; i
< ARRAY_SIZE(ipr_ses_table
); i
++, ste
++) {
1342 for (j
= 0, matches
= 0; j
< IPR_PROD_ID_LEN
; j
++) {
1343 if (ste
->compare_product_id_byte
[j
] == 'X') {
1344 if (res
->cfgte
.std_inq_data
.vpids
.product_id
[j
] == ste
->product_id
[j
])
1352 if (matches
== IPR_PROD_ID_LEN
)
1360 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1361 * @ioa_cfg: ioa config struct
1363 * @bus_width: bus width
1366 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1367 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1368 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1369 * max 160MHz = max 320MB/sec).
1371 static u32
ipr_get_max_scsi_speed(struct ipr_ioa_cfg
*ioa_cfg
, u8 bus
, u8 bus_width
)
1373 struct ipr_resource_entry
*res
;
1374 const struct ipr_ses_table_entry
*ste
;
1375 u32 max_xfer_rate
= IPR_MAX_SCSI_RATE(bus_width
);
1377 /* Loop through each config table entry in the config table buffer */
1378 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
1379 if (!(IPR_IS_SES_DEVICE(res
->cfgte
.std_inq_data
)))
1382 if (bus
!= res
->cfgte
.res_addr
.bus
)
1385 if (!(ste
= ipr_find_ses_entry(res
)))
1388 max_xfer_rate
= (ste
->max_bus_speed_limit
* 10) / (bus_width
/ 8);
1391 return max_xfer_rate
;
1395 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1396 * @ioa_cfg: ioa config struct
1397 * @max_delay: max delay in micro-seconds to wait
1399 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1402 * 0 on success / other on failure
1404 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg
*ioa_cfg
, int max_delay
)
1406 volatile u32 pcii_reg
;
1409 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1410 while (delay
< max_delay
) {
1411 pcii_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
);
1413 if (pcii_reg
& IPR_PCII_IO_DEBUG_ACKNOWLEDGE
)
1416 /* udelay cannot be used if delay is more than a few milliseconds */
1417 if ((delay
/ 1000) > MAX_UDELAY_MS
)
1418 mdelay(delay
/ 1000);
1428 * ipr_get_ldump_data_section - Dump IOA memory
1429 * @ioa_cfg: ioa config struct
1430 * @start_addr: adapter address to dump
1431 * @dest: destination kernel buffer
1432 * @length_in_words: length to dump in 4 byte words
1435 * 0 on success / -EIO on failure
1437 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg
*ioa_cfg
,
1439 __be32
*dest
, u32 length_in_words
)
1441 volatile u32 temp_pcii_reg
;
1444 /* Write IOA interrupt reg starting LDUMP state */
1445 writel((IPR_UPROCI_RESET_ALERT
| IPR_UPROCI_IO_DEBUG_ALERT
),
1446 ioa_cfg
->regs
.set_uproc_interrupt_reg
);
1448 /* Wait for IO debug acknowledge */
1449 if (ipr_wait_iodbg_ack(ioa_cfg
,
1450 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC
)) {
1451 dev_err(&ioa_cfg
->pdev
->dev
,
1452 "IOA dump long data transfer timeout\n");
1456 /* Signal LDUMP interlocked - clear IO debug ack */
1457 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE
,
1458 ioa_cfg
->regs
.clr_interrupt_reg
);
1460 /* Write Mailbox with starting address */
1461 writel(start_addr
, ioa_cfg
->ioa_mailbox
);
1463 /* Signal address valid - clear IOA Reset alert */
1464 writel(IPR_UPROCI_RESET_ALERT
,
1465 ioa_cfg
->regs
.clr_uproc_interrupt_reg
);
1467 for (i
= 0; i
< length_in_words
; i
++) {
1468 /* Wait for IO debug acknowledge */
1469 if (ipr_wait_iodbg_ack(ioa_cfg
,
1470 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC
)) {
1471 dev_err(&ioa_cfg
->pdev
->dev
,
1472 "IOA dump short data transfer timeout\n");
1476 /* Read data from mailbox and increment destination pointer */
1477 *dest
= cpu_to_be32(readl(ioa_cfg
->ioa_mailbox
));
1480 /* For all but the last word of data, signal data received */
1481 if (i
< (length_in_words
- 1)) {
1482 /* Signal dump data received - Clear IO debug Ack */
1483 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE
,
1484 ioa_cfg
->regs
.clr_interrupt_reg
);
1488 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1489 writel(IPR_UPROCI_RESET_ALERT
,
1490 ioa_cfg
->regs
.set_uproc_interrupt_reg
);
1492 writel(IPR_UPROCI_IO_DEBUG_ALERT
,
1493 ioa_cfg
->regs
.clr_uproc_interrupt_reg
);
1495 /* Signal dump data received - Clear IO debug Ack */
1496 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE
,
1497 ioa_cfg
->regs
.clr_interrupt_reg
);
1499 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1500 while (delay
< IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC
) {
1502 readl(ioa_cfg
->regs
.sense_uproc_interrupt_reg
);
1504 if (!(temp_pcii_reg
& IPR_UPROCI_RESET_ALERT
))
1514 #ifdef CONFIG_SCSI_IPR_DUMP
1516 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1517 * @ioa_cfg: ioa config struct
1518 * @pci_address: adapter address
1519 * @length: length of data to copy
1521 * Copy data from PCI adapter to kernel buffer.
1522 * Note: length MUST be a 4 byte multiple
1524 * 0 on success / other on failure
1526 static int ipr_sdt_copy(struct ipr_ioa_cfg
*ioa_cfg
,
1527 unsigned long pci_address
, u32 length
)
1529 int bytes_copied
= 0;
1530 int cur_len
, rc
, rem_len
, rem_page_len
;
1532 unsigned long lock_flags
= 0;
1533 struct ipr_ioa_dump
*ioa_dump
= &ioa_cfg
->dump
->ioa_dump
;
1535 while (bytes_copied
< length
&&
1536 (ioa_dump
->hdr
.len
+ bytes_copied
) < IPR_MAX_IOA_DUMP_SIZE
) {
1537 if (ioa_dump
->page_offset
>= PAGE_SIZE
||
1538 ioa_dump
->page_offset
== 0) {
1539 page
= (__be32
*)__get_free_page(GFP_ATOMIC
);
1543 return bytes_copied
;
1546 ioa_dump
->page_offset
= 0;
1547 ioa_dump
->ioa_data
[ioa_dump
->next_page_index
] = page
;
1548 ioa_dump
->next_page_index
++;
1550 page
= ioa_dump
->ioa_data
[ioa_dump
->next_page_index
- 1];
1552 rem_len
= length
- bytes_copied
;
1553 rem_page_len
= PAGE_SIZE
- ioa_dump
->page_offset
;
1554 cur_len
= min(rem_len
, rem_page_len
);
1556 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1557 if (ioa_cfg
->sdt_state
== ABORT_DUMP
) {
1560 rc
= ipr_get_ldump_data_section(ioa_cfg
,
1561 pci_address
+ bytes_copied
,
1562 &page
[ioa_dump
->page_offset
/ 4],
1563 (cur_len
/ sizeof(u32
)));
1565 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1568 ioa_dump
->page_offset
+= cur_len
;
1569 bytes_copied
+= cur_len
;
1577 return bytes_copied
;
1581 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1582 * @hdr: dump entry header struct
1587 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header
*hdr
)
1589 hdr
->eye_catcher
= IPR_DUMP_EYE_CATCHER
;
1591 hdr
->offset
= sizeof(*hdr
);
1592 hdr
->status
= IPR_DUMP_STATUS_SUCCESS
;
1596 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1597 * @ioa_cfg: ioa config struct
1598 * @driver_dump: driver dump struct
1603 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg
*ioa_cfg
,
1604 struct ipr_driver_dump
*driver_dump
)
1606 struct ipr_inquiry_page3
*ucode_vpd
= &ioa_cfg
->vpd_cbs
->page3_data
;
1608 ipr_init_dump_entry_hdr(&driver_dump
->ioa_type_entry
.hdr
);
1609 driver_dump
->ioa_type_entry
.hdr
.len
=
1610 sizeof(struct ipr_dump_ioa_type_entry
) -
1611 sizeof(struct ipr_dump_entry_header
);
1612 driver_dump
->ioa_type_entry
.hdr
.data_type
= IPR_DUMP_DATA_TYPE_BINARY
;
1613 driver_dump
->ioa_type_entry
.hdr
.id
= IPR_DUMP_DRIVER_TYPE_ID
;
1614 driver_dump
->ioa_type_entry
.type
= ioa_cfg
->type
;
1615 driver_dump
->ioa_type_entry
.fw_version
= (ucode_vpd
->major_release
<< 24) |
1616 (ucode_vpd
->card_type
<< 16) | (ucode_vpd
->minor_release
[0] << 8) |
1617 ucode_vpd
->minor_release
[1];
1618 driver_dump
->hdr
.num_entries
++;
1622 * ipr_dump_version_data - Fill in the driver version in the dump.
1623 * @ioa_cfg: ioa config struct
1624 * @driver_dump: driver dump struct
1629 static void ipr_dump_version_data(struct ipr_ioa_cfg
*ioa_cfg
,
1630 struct ipr_driver_dump
*driver_dump
)
1632 ipr_init_dump_entry_hdr(&driver_dump
->version_entry
.hdr
);
1633 driver_dump
->version_entry
.hdr
.len
=
1634 sizeof(struct ipr_dump_version_entry
) -
1635 sizeof(struct ipr_dump_entry_header
);
1636 driver_dump
->version_entry
.hdr
.data_type
= IPR_DUMP_DATA_TYPE_ASCII
;
1637 driver_dump
->version_entry
.hdr
.id
= IPR_DUMP_DRIVER_VERSION_ID
;
1638 strcpy(driver_dump
->version_entry
.version
, IPR_DRIVER_VERSION
);
1639 driver_dump
->hdr
.num_entries
++;
1643 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1644 * @ioa_cfg: ioa config struct
1645 * @driver_dump: driver dump struct
1650 static void ipr_dump_trace_data(struct ipr_ioa_cfg
*ioa_cfg
,
1651 struct ipr_driver_dump
*driver_dump
)
1653 ipr_init_dump_entry_hdr(&driver_dump
->trace_entry
.hdr
);
1654 driver_dump
->trace_entry
.hdr
.len
=
1655 sizeof(struct ipr_dump_trace_entry
) -
1656 sizeof(struct ipr_dump_entry_header
);
1657 driver_dump
->trace_entry
.hdr
.data_type
= IPR_DUMP_DATA_TYPE_BINARY
;
1658 driver_dump
->trace_entry
.hdr
.id
= IPR_DUMP_TRACE_ID
;
1659 memcpy(driver_dump
->trace_entry
.trace
, ioa_cfg
->trace
, IPR_TRACE_SIZE
);
1660 driver_dump
->hdr
.num_entries
++;
1664 * ipr_dump_location_data - Fill in the IOA location in the dump.
1665 * @ioa_cfg: ioa config struct
1666 * @driver_dump: driver dump struct
1671 static void ipr_dump_location_data(struct ipr_ioa_cfg
*ioa_cfg
,
1672 struct ipr_driver_dump
*driver_dump
)
1674 ipr_init_dump_entry_hdr(&driver_dump
->location_entry
.hdr
);
1675 driver_dump
->location_entry
.hdr
.len
=
1676 sizeof(struct ipr_dump_location_entry
) -
1677 sizeof(struct ipr_dump_entry_header
);
1678 driver_dump
->location_entry
.hdr
.data_type
= IPR_DUMP_DATA_TYPE_ASCII
;
1679 driver_dump
->location_entry
.hdr
.id
= IPR_DUMP_LOCATION_ID
;
1680 strcpy(driver_dump
->location_entry
.location
, ioa_cfg
->pdev
->dev
.bus_id
);
1681 driver_dump
->hdr
.num_entries
++;
1685 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1686 * @ioa_cfg: ioa config struct
1687 * @dump: dump struct
1692 static void ipr_get_ioa_dump(struct ipr_ioa_cfg
*ioa_cfg
, struct ipr_dump
*dump
)
1694 unsigned long start_addr
, sdt_word
;
1695 unsigned long lock_flags
= 0;
1696 struct ipr_driver_dump
*driver_dump
= &dump
->driver_dump
;
1697 struct ipr_ioa_dump
*ioa_dump
= &dump
->ioa_dump
;
1698 u32 num_entries
, start_off
, end_off
;
1699 u32 bytes_to_copy
, bytes_copied
, rc
;
1700 struct ipr_sdt
*sdt
;
1705 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1707 if (ioa_cfg
->sdt_state
!= GET_DUMP
) {
1708 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1712 start_addr
= readl(ioa_cfg
->ioa_mailbox
);
1714 if (!ipr_sdt_is_fmt2(start_addr
)) {
1715 dev_err(&ioa_cfg
->pdev
->dev
,
1716 "Invalid dump table format: %lx\n", start_addr
);
1717 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1721 dev_err(&ioa_cfg
->pdev
->dev
, "Dump of IOA initiated\n");
1723 driver_dump
->hdr
.eye_catcher
= IPR_DUMP_EYE_CATCHER
;
1725 /* Initialize the overall dump header */
1726 driver_dump
->hdr
.len
= sizeof(struct ipr_driver_dump
);
1727 driver_dump
->hdr
.num_entries
= 1;
1728 driver_dump
->hdr
.first_entry_offset
= sizeof(struct ipr_dump_header
);
1729 driver_dump
->hdr
.status
= IPR_DUMP_STATUS_SUCCESS
;
1730 driver_dump
->hdr
.os
= IPR_DUMP_OS_LINUX
;
1731 driver_dump
->hdr
.driver_name
= IPR_DUMP_DRIVER_NAME
;
1733 ipr_dump_version_data(ioa_cfg
, driver_dump
);
1734 ipr_dump_location_data(ioa_cfg
, driver_dump
);
1735 ipr_dump_ioa_type_data(ioa_cfg
, driver_dump
);
1736 ipr_dump_trace_data(ioa_cfg
, driver_dump
);
1738 /* Update dump_header */
1739 driver_dump
->hdr
.len
+= sizeof(struct ipr_dump_entry_header
);
1741 /* IOA Dump entry */
1742 ipr_init_dump_entry_hdr(&ioa_dump
->hdr
);
1743 ioa_dump
->format
= IPR_SDT_FMT2
;
1744 ioa_dump
->hdr
.len
= 0;
1745 ioa_dump
->hdr
.data_type
= IPR_DUMP_DATA_TYPE_BINARY
;
1746 ioa_dump
->hdr
.id
= IPR_DUMP_IOA_DUMP_ID
;
1748 /* First entries in sdt are actually a list of dump addresses and
1749 lengths to gather the real dump data. sdt represents the pointer
1750 to the ioa generated dump table. Dump data will be extracted based
1751 on entries in this table */
1752 sdt
= &ioa_dump
->sdt
;
1754 rc
= ipr_get_ldump_data_section(ioa_cfg
, start_addr
, (__be32
*)sdt
,
1755 sizeof(struct ipr_sdt
) / sizeof(__be32
));
1757 /* Smart Dump table is ready to use and the first entry is valid */
1758 if (rc
|| (be32_to_cpu(sdt
->hdr
.state
) != IPR_FMT2_SDT_READY_TO_USE
)) {
1759 dev_err(&ioa_cfg
->pdev
->dev
,
1760 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1761 rc
, be32_to_cpu(sdt
->hdr
.state
));
1762 driver_dump
->hdr
.status
= IPR_DUMP_STATUS_FAILED
;
1763 ioa_cfg
->sdt_state
= DUMP_OBTAINED
;
1764 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1768 num_entries
= be32_to_cpu(sdt
->hdr
.num_entries_used
);
1770 if (num_entries
> IPR_NUM_SDT_ENTRIES
)
1771 num_entries
= IPR_NUM_SDT_ENTRIES
;
1773 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1775 for (i
= 0; i
< num_entries
; i
++) {
1776 if (ioa_dump
->hdr
.len
> IPR_MAX_IOA_DUMP_SIZE
) {
1777 driver_dump
->hdr
.status
= IPR_DUMP_STATUS_QUAL_SUCCESS
;
1781 if (sdt
->entry
[i
].flags
& IPR_SDT_VALID_ENTRY
) {
1782 sdt_word
= be32_to_cpu(sdt
->entry
[i
].bar_str_offset
);
1783 start_off
= sdt_word
& IPR_FMT2_MBX_ADDR_MASK
;
1784 end_off
= be32_to_cpu(sdt
->entry
[i
].end_offset
);
1786 if (ipr_sdt_is_fmt2(sdt_word
) && sdt_word
) {
1787 bytes_to_copy
= end_off
- start_off
;
1788 if (bytes_to_copy
> IPR_MAX_IOA_DUMP_SIZE
) {
1789 sdt
->entry
[i
].flags
&= ~IPR_SDT_VALID_ENTRY
;
1793 /* Copy data from adapter to driver buffers */
1794 bytes_copied
= ipr_sdt_copy(ioa_cfg
, sdt_word
,
1797 ioa_dump
->hdr
.len
+= bytes_copied
;
1799 if (bytes_copied
!= bytes_to_copy
) {
1800 driver_dump
->hdr
.status
= IPR_DUMP_STATUS_QUAL_SUCCESS
;
1807 dev_err(&ioa_cfg
->pdev
->dev
, "Dump of IOA completed.\n");
1809 /* Update dump_header */
1810 driver_dump
->hdr
.len
+= ioa_dump
->hdr
.len
;
1812 ioa_cfg
->sdt_state
= DUMP_OBTAINED
;
1817 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1821 * ipr_release_dump - Free adapter dump memory
1822 * @kref: kref struct
1827 static void ipr_release_dump(struct kref
*kref
)
1829 struct ipr_dump
*dump
= container_of(kref
,struct ipr_dump
,kref
);
1830 struct ipr_ioa_cfg
*ioa_cfg
= dump
->ioa_cfg
;
1831 unsigned long lock_flags
= 0;
1835 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1836 ioa_cfg
->dump
= NULL
;
1837 ioa_cfg
->sdt_state
= INACTIVE
;
1838 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1840 for (i
= 0; i
< dump
->ioa_dump
.next_page_index
; i
++)
1841 free_page((unsigned long) dump
->ioa_dump
.ioa_data
[i
]);
1848 * ipr_worker_thread - Worker thread
1849 * @data: ioa config struct
1851 * Called at task level from a work thread. This function takes care
1852 * of adding and removing device from the mid-layer as configuration
1853 * changes are detected by the adapter.
1858 static void ipr_worker_thread(void *data
)
1860 unsigned long lock_flags
;
1861 struct ipr_resource_entry
*res
;
1862 struct scsi_device
*sdev
;
1863 struct ipr_dump
*dump
;
1864 struct ipr_ioa_cfg
*ioa_cfg
= data
;
1865 u8 bus
, target
, lun
;
1869 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1871 if (ioa_cfg
->sdt_state
== GET_DUMP
) {
1872 dump
= ioa_cfg
->dump
;
1874 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1877 kref_get(&dump
->kref
);
1878 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1879 ipr_get_ioa_dump(ioa_cfg
, dump
);
1880 kref_put(&dump
->kref
, ipr_release_dump
);
1882 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1883 if (ioa_cfg
->sdt_state
== DUMP_OBTAINED
)
1884 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
1885 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1892 if (!ioa_cfg
->allow_cmds
|| !ioa_cfg
->allow_ml_add_del
) {
1893 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1897 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
1898 if (res
->del_from_ml
&& res
->sdev
) {
1901 if (!scsi_device_get(sdev
)) {
1903 list_move_tail(&res
->queue
, &ioa_cfg
->free_res_q
);
1904 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1905 scsi_remove_device(sdev
);
1906 scsi_device_put(sdev
);
1907 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1914 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
1915 if (res
->add_to_ml
) {
1916 bus
= res
->cfgte
.res_addr
.bus
;
1917 target
= res
->cfgte
.res_addr
.target
;
1918 lun
= res
->cfgte
.res_addr
.lun
;
1919 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1920 scsi_add_device(ioa_cfg
->host
, bus
, target
, lun
);
1921 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1926 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1927 kobject_uevent(&ioa_cfg
->host
->shost_classdev
.kobj
, KOBJ_CHANGE
, NULL
);
1931 #ifdef CONFIG_SCSI_IPR_TRACE
1933 * ipr_read_trace - Dump the adapter trace
1934 * @kobj: kobject struct
1937 * @count: buffer size
1940 * number of bytes printed to buffer
1942 static ssize_t
ipr_read_trace(struct kobject
*kobj
, char *buf
,
1943 loff_t off
, size_t count
)
1945 struct class_device
*cdev
= container_of(kobj
,struct class_device
,kobj
);
1946 struct Scsi_Host
*shost
= class_to_shost(cdev
);
1947 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
1948 unsigned long lock_flags
= 0;
1949 int size
= IPR_TRACE_SIZE
;
1950 char *src
= (char *)ioa_cfg
->trace
;
1954 if (off
+ count
> size
) {
1959 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1960 memcpy(buf
, &src
[off
], count
);
1961 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
1965 static struct bin_attribute ipr_trace_attr
= {
1971 .read
= ipr_read_trace
,
1976 * ipr_show_fw_version - Show the firmware version
1977 * @class_dev: class device struct
1981 * number of bytes printed to buffer
1983 static ssize_t
ipr_show_fw_version(struct class_device
*class_dev
, char *buf
)
1985 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
1986 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
1987 struct ipr_inquiry_page3
*ucode_vpd
= &ioa_cfg
->vpd_cbs
->page3_data
;
1988 unsigned long lock_flags
= 0;
1991 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
1992 len
= snprintf(buf
, PAGE_SIZE
, "%02X%02X%02X%02X\n",
1993 ucode_vpd
->major_release
, ucode_vpd
->card_type
,
1994 ucode_vpd
->minor_release
[0],
1995 ucode_vpd
->minor_release
[1]);
1996 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2000 static struct class_device_attribute ipr_fw_version_attr
= {
2002 .name
= "fw_version",
2005 .show
= ipr_show_fw_version
,
2009 * ipr_show_log_level - Show the adapter's error logging level
2010 * @class_dev: class device struct
2014 * number of bytes printed to buffer
2016 static ssize_t
ipr_show_log_level(struct class_device
*class_dev
, char *buf
)
2018 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
2019 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2020 unsigned long lock_flags
= 0;
2023 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2024 len
= snprintf(buf
, PAGE_SIZE
, "%d\n", ioa_cfg
->log_level
);
2025 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2030 * ipr_store_log_level - Change the adapter's error logging level
2031 * @class_dev: class device struct
2035 * number of bytes printed to buffer
2037 static ssize_t
ipr_store_log_level(struct class_device
*class_dev
,
2038 const char *buf
, size_t count
)
2040 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
2041 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2042 unsigned long lock_flags
= 0;
2044 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2045 ioa_cfg
->log_level
= simple_strtoul(buf
, NULL
, 10);
2046 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2050 static struct class_device_attribute ipr_log_level_attr
= {
2052 .name
= "log_level",
2053 .mode
= S_IRUGO
| S_IWUSR
,
2055 .show
= ipr_show_log_level
,
2056 .store
= ipr_store_log_level
2060 * ipr_store_diagnostics - IOA Diagnostics interface
2061 * @class_dev: class_device struct
2063 * @count: buffer size
2065 * This function will reset the adapter and wait a reasonable
2066 * amount of time for any errors that the adapter might log.
2069 * count on success / other on failure
2071 static ssize_t
ipr_store_diagnostics(struct class_device
*class_dev
,
2072 const char *buf
, size_t count
)
2074 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
2075 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2076 unsigned long lock_flags
= 0;
2079 if (!capable(CAP_SYS_ADMIN
))
2082 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
2083 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2084 ioa_cfg
->errors_logged
= 0;
2085 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NORMAL
);
2087 if (ioa_cfg
->in_reset_reload
) {
2088 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2089 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
2091 /* Wait for a second for any errors to be logged */
2094 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2098 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2099 if (ioa_cfg
->in_reset_reload
|| ioa_cfg
->errors_logged
)
2101 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2106 static struct class_device_attribute ipr_diagnostics_attr
= {
2108 .name
= "run_diagnostics",
2111 .store
= ipr_store_diagnostics
2115 * ipr_store_reset_adapter - Reset the adapter
2116 * @class_dev: class_device struct
2118 * @count: buffer size
2120 * This function will reset the adapter.
2123 * count on success / other on failure
2125 static ssize_t
ipr_store_reset_adapter(struct class_device
*class_dev
,
2126 const char *buf
, size_t count
)
2128 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
2129 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2130 unsigned long lock_flags
;
2133 if (!capable(CAP_SYS_ADMIN
))
2136 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2137 if (!ioa_cfg
->in_reset_reload
)
2138 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NORMAL
);
2139 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2140 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
2145 static struct class_device_attribute ipr_ioa_reset_attr
= {
2147 .name
= "reset_host",
2150 .store
= ipr_store_reset_adapter
2154 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2155 * @buf_len: buffer length
2157 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2158 * list to use for microcode download
2161 * pointer to sglist / NULL on failure
2163 static struct ipr_sglist
*ipr_alloc_ucode_buffer(int buf_len
)
2165 int sg_size
, order
, bsize_elem
, num_elem
, i
, j
;
2166 struct ipr_sglist
*sglist
;
2167 struct scatterlist
*scatterlist
;
2170 /* Get the minimum size per scatter/gather element */
2171 sg_size
= buf_len
/ (IPR_MAX_SGLIST
- 1);
2173 /* Get the actual size per element */
2174 order
= get_order(sg_size
);
2176 /* Determine the actual number of bytes per element */
2177 bsize_elem
= PAGE_SIZE
* (1 << order
);
2179 /* Determine the actual number of sg entries needed */
2180 if (buf_len
% bsize_elem
)
2181 num_elem
= (buf_len
/ bsize_elem
) + 1;
2183 num_elem
= buf_len
/ bsize_elem
;
2185 /* Allocate a scatter/gather list for the DMA */
2186 sglist
= kmalloc(sizeof(struct ipr_sglist
) +
2187 (sizeof(struct scatterlist
) * (num_elem
- 1)),
2190 if (sglist
== NULL
) {
2195 memset(sglist
, 0, sizeof(struct ipr_sglist
) +
2196 (sizeof(struct scatterlist
) * (num_elem
- 1)));
2198 scatterlist
= sglist
->scatterlist
;
2200 sglist
->order
= order
;
2201 sglist
->num_sg
= num_elem
;
2203 /* Allocate a bunch of sg elements */
2204 for (i
= 0; i
< num_elem
; i
++) {
2205 page
= alloc_pages(GFP_KERNEL
, order
);
2209 /* Free up what we already allocated */
2210 for (j
= i
- 1; j
>= 0; j
--)
2211 __free_pages(scatterlist
[j
].page
, order
);
2216 scatterlist
[i
].page
= page
;
2223 * ipr_free_ucode_buffer - Frees a microcode download buffer
2224 * @p_dnld: scatter/gather list pointer
2226 * Free a DMA'able ucode download buffer previously allocated with
2227 * ipr_alloc_ucode_buffer
2232 static void ipr_free_ucode_buffer(struct ipr_sglist
*sglist
)
2236 for (i
= 0; i
< sglist
->num_sg
; i
++)
2237 __free_pages(sglist
->scatterlist
[i
].page
, sglist
->order
);
2243 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2244 * @sglist: scatter/gather list pointer
2245 * @buffer: buffer pointer
2246 * @len: buffer length
2248 * Copy a microcode image from a user buffer into a buffer allocated by
2249 * ipr_alloc_ucode_buffer
2252 * 0 on success / other on failure
2254 static int ipr_copy_ucode_buffer(struct ipr_sglist
*sglist
,
2255 u8
*buffer
, u32 len
)
2257 int bsize_elem
, i
, result
= 0;
2258 struct scatterlist
*scatterlist
;
2261 /* Determine the actual number of bytes per element */
2262 bsize_elem
= PAGE_SIZE
* (1 << sglist
->order
);
2264 scatterlist
= sglist
->scatterlist
;
2266 for (i
= 0; i
< (len
/ bsize_elem
); i
++, buffer
+= bsize_elem
) {
2267 kaddr
= kmap(scatterlist
[i
].page
);
2268 memcpy(kaddr
, buffer
, bsize_elem
);
2269 kunmap(scatterlist
[i
].page
);
2271 scatterlist
[i
].length
= bsize_elem
;
2279 if (len
% bsize_elem
) {
2280 kaddr
= kmap(scatterlist
[i
].page
);
2281 memcpy(kaddr
, buffer
, len
% bsize_elem
);
2282 kunmap(scatterlist
[i
].page
);
2284 scatterlist
[i
].length
= len
% bsize_elem
;
2287 sglist
->buffer_len
= len
;
2292 * ipr_map_ucode_buffer - Map a microcode download buffer
2293 * @ipr_cmd: ipr command struct
2294 * @sglist: scatter/gather list
2295 * @len: total length of download buffer
2297 * Maps a microcode download scatter/gather list for DMA and
2301 * 0 on success / -EIO on failure
2303 static int ipr_map_ucode_buffer(struct ipr_cmnd
*ipr_cmd
,
2304 struct ipr_sglist
*sglist
, int len
)
2306 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
2307 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
2308 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
2309 struct scatterlist
*scatterlist
= sglist
->scatterlist
;
2312 ipr_cmd
->dma_use_sg
= pci_map_sg(ioa_cfg
->pdev
, scatterlist
,
2313 sglist
->num_sg
, DMA_TO_DEVICE
);
2315 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_WRITE_NOT_READ
;
2316 ioarcb
->write_data_transfer_length
= cpu_to_be32(len
);
2317 ioarcb
->write_ioadl_len
=
2318 cpu_to_be32(sizeof(struct ipr_ioadl_desc
) * ipr_cmd
->dma_use_sg
);
2320 for (i
= 0; i
< ipr_cmd
->dma_use_sg
; i
++) {
2321 ioadl
[i
].flags_and_data_len
=
2322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE
| sg_dma_len(&scatterlist
[i
]));
2324 cpu_to_be32(sg_dma_address(&scatterlist
[i
]));
2327 if (likely(ipr_cmd
->dma_use_sg
)) {
2328 ioadl
[i
-1].flags_and_data_len
|=
2329 cpu_to_be32(IPR_IOADL_FLAGS_LAST
);
2332 dev_err(&ioa_cfg
->pdev
->dev
, "pci_map_sg failed!\n");
2340 * ipr_store_update_fw - Update the firmware on the adapter
2341 * @class_dev: class_device struct
2343 * @count: buffer size
2345 * This function will update the firmware on the adapter.
2348 * count on success / other on failure
2350 static ssize_t
ipr_store_update_fw(struct class_device
*class_dev
,
2351 const char *buf
, size_t count
)
2353 struct Scsi_Host
*shost
= class_to_shost(class_dev
);
2354 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2355 struct ipr_ucode_image_header
*image_hdr
;
2356 const struct firmware
*fw_entry
;
2357 struct ipr_sglist
*sglist
;
2358 unsigned long lock_flags
;
2361 int len
, result
, dnld_size
;
2363 if (!capable(CAP_SYS_ADMIN
))
2366 len
= snprintf(fname
, 99, "%s", buf
);
2367 fname
[len
-1] = '\0';
2369 if(request_firmware(&fw_entry
, fname
, &ioa_cfg
->pdev
->dev
)) {
2370 dev_err(&ioa_cfg
->pdev
->dev
, "Firmware file %s not found\n", fname
);
2374 image_hdr
= (struct ipr_ucode_image_header
*)fw_entry
->data
;
2376 if (be32_to_cpu(image_hdr
->header_length
) > fw_entry
->size
||
2377 (ioa_cfg
->vpd_cbs
->page3_data
.card_type
&&
2378 ioa_cfg
->vpd_cbs
->page3_data
.card_type
!= image_hdr
->card_type
)) {
2379 dev_err(&ioa_cfg
->pdev
->dev
, "Invalid microcode buffer\n");
2380 release_firmware(fw_entry
);
2384 src
= (u8
*)image_hdr
+ be32_to_cpu(image_hdr
->header_length
);
2385 dnld_size
= fw_entry
->size
- be32_to_cpu(image_hdr
->header_length
);
2386 sglist
= ipr_alloc_ucode_buffer(dnld_size
);
2389 dev_err(&ioa_cfg
->pdev
->dev
, "Microcode buffer allocation failed\n");
2390 release_firmware(fw_entry
);
2394 result
= ipr_copy_ucode_buffer(sglist
, src
, dnld_size
);
2397 dev_err(&ioa_cfg
->pdev
->dev
,
2398 "Microcode buffer copy to DMA buffer failed\n");
2399 ipr_free_ucode_buffer(sglist
);
2400 release_firmware(fw_entry
);
2404 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2406 if (ioa_cfg
->ucode_sglist
) {
2407 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2408 dev_err(&ioa_cfg
->pdev
->dev
,
2409 "Microcode download already in progress\n");
2410 ipr_free_ucode_buffer(sglist
);
2411 release_firmware(fw_entry
);
2415 ioa_cfg
->ucode_sglist
= sglist
;
2416 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NORMAL
);
2417 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2418 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
2420 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2421 ioa_cfg
->ucode_sglist
= NULL
;
2422 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2424 ipr_free_ucode_buffer(sglist
);
2425 release_firmware(fw_entry
);
2430 static struct class_device_attribute ipr_update_fw_attr
= {
2432 .name
= "update_fw",
2435 .store
= ipr_store_update_fw
2438 static struct class_device_attribute
*ipr_ioa_attrs
[] = {
2439 &ipr_fw_version_attr
,
2440 &ipr_log_level_attr
,
2441 &ipr_diagnostics_attr
,
2442 &ipr_ioa_reset_attr
,
2443 &ipr_update_fw_attr
,
2447 #ifdef CONFIG_SCSI_IPR_DUMP
2449 * ipr_read_dump - Dump the adapter
2450 * @kobj: kobject struct
2453 * @count: buffer size
2456 * number of bytes printed to buffer
2458 static ssize_t
ipr_read_dump(struct kobject
*kobj
, char *buf
,
2459 loff_t off
, size_t count
)
2461 struct class_device
*cdev
= container_of(kobj
,struct class_device
,kobj
);
2462 struct Scsi_Host
*shost
= class_to_shost(cdev
);
2463 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2464 struct ipr_dump
*dump
;
2465 unsigned long lock_flags
= 0;
2470 if (!capable(CAP_SYS_ADMIN
))
2473 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2474 dump
= ioa_cfg
->dump
;
2476 if (ioa_cfg
->sdt_state
!= DUMP_OBTAINED
|| !dump
) {
2477 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2480 kref_get(&dump
->kref
);
2481 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2483 if (off
> dump
->driver_dump
.hdr
.len
) {
2484 kref_put(&dump
->kref
, ipr_release_dump
);
2488 if (off
+ count
> dump
->driver_dump
.hdr
.len
) {
2489 count
= dump
->driver_dump
.hdr
.len
- off
;
2493 if (count
&& off
< sizeof(dump
->driver_dump
)) {
2494 if (off
+ count
> sizeof(dump
->driver_dump
))
2495 len
= sizeof(dump
->driver_dump
) - off
;
2498 src
= (u8
*)&dump
->driver_dump
+ off
;
2499 memcpy(buf
, src
, len
);
2505 off
-= sizeof(dump
->driver_dump
);
2507 if (count
&& off
< offsetof(struct ipr_ioa_dump
, ioa_data
)) {
2508 if (off
+ count
> offsetof(struct ipr_ioa_dump
, ioa_data
))
2509 len
= offsetof(struct ipr_ioa_dump
, ioa_data
) - off
;
2512 src
= (u8
*)&dump
->ioa_dump
+ off
;
2513 memcpy(buf
, src
, len
);
2519 off
-= offsetof(struct ipr_ioa_dump
, ioa_data
);
2522 if ((off
& PAGE_MASK
) != ((off
+ count
) & PAGE_MASK
))
2523 len
= PAGE_ALIGN(off
) - off
;
2526 src
= (u8
*)dump
->ioa_dump
.ioa_data
[(off
& PAGE_MASK
) >> PAGE_SHIFT
];
2527 src
+= off
& ~PAGE_MASK
;
2528 memcpy(buf
, src
, len
);
2534 kref_put(&dump
->kref
, ipr_release_dump
);
2539 * ipr_alloc_dump - Prepare for adapter dump
2540 * @ioa_cfg: ioa config struct
2543 * 0 on success / other on failure
2545 static int ipr_alloc_dump(struct ipr_ioa_cfg
*ioa_cfg
)
2547 struct ipr_dump
*dump
;
2548 unsigned long lock_flags
= 0;
2551 dump
= kmalloc(sizeof(struct ipr_dump
), GFP_KERNEL
);
2554 ipr_err("Dump memory allocation failed\n");
2558 memset(dump
, 0, sizeof(struct ipr_dump
));
2559 kref_init(&dump
->kref
);
2560 dump
->ioa_cfg
= ioa_cfg
;
2562 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2564 if (INACTIVE
!= ioa_cfg
->sdt_state
) {
2565 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2570 ioa_cfg
->dump
= dump
;
2571 ioa_cfg
->sdt_state
= WAIT_FOR_DUMP
;
2572 if (ioa_cfg
->ioa_is_dead
&& !ioa_cfg
->dump_taken
) {
2573 ioa_cfg
->dump_taken
= 1;
2574 schedule_work(&ioa_cfg
->work_q
);
2576 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2583 * ipr_free_dump - Free adapter dump memory
2584 * @ioa_cfg: ioa config struct
2587 * 0 on success / other on failure
2589 static int ipr_free_dump(struct ipr_ioa_cfg
*ioa_cfg
)
2591 struct ipr_dump
*dump
;
2592 unsigned long lock_flags
= 0;
2596 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2597 dump
= ioa_cfg
->dump
;
2599 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2603 ioa_cfg
->dump
= NULL
;
2604 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2606 kref_put(&dump
->kref
, ipr_release_dump
);
2613 * ipr_write_dump - Setup dump state of adapter
2614 * @kobj: kobject struct
2617 * @count: buffer size
2620 * number of bytes printed to buffer
2622 static ssize_t
ipr_write_dump(struct kobject
*kobj
, char *buf
,
2623 loff_t off
, size_t count
)
2625 struct class_device
*cdev
= container_of(kobj
,struct class_device
,kobj
);
2626 struct Scsi_Host
*shost
= class_to_shost(cdev
);
2627 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)shost
->hostdata
;
2630 if (!capable(CAP_SYS_ADMIN
))
2634 rc
= ipr_alloc_dump(ioa_cfg
);
2635 else if (buf
[0] == '0')
2636 rc
= ipr_free_dump(ioa_cfg
);
2646 static struct bin_attribute ipr_dump_attr
= {
2649 .mode
= S_IRUSR
| S_IWUSR
,
2652 .read
= ipr_read_dump
,
2653 .write
= ipr_write_dump
2656 static int ipr_free_dump(struct ipr_ioa_cfg
*ioa_cfg
) { return 0; };
2660 * ipr_change_queue_depth - Change the device's queue depth
2661 * @sdev: scsi device struct
2662 * @qdepth: depth to set
2667 static int ipr_change_queue_depth(struct scsi_device
*sdev
, int qdepth
)
2669 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
), qdepth
);
2670 return sdev
->queue_depth
;
2674 * ipr_change_queue_type - Change the device's queue type
2675 * @dsev: scsi device struct
2676 * @tag_type: type of tags to use
2679 * actual queue type set
2681 static int ipr_change_queue_type(struct scsi_device
*sdev
, int tag_type
)
2683 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)sdev
->host
->hostdata
;
2684 struct ipr_resource_entry
*res
;
2685 unsigned long lock_flags
= 0;
2687 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2688 res
= (struct ipr_resource_entry
*)sdev
->hostdata
;
2691 if (ipr_is_gscsi(res
) && sdev
->tagged_supported
) {
2693 * We don't bother quiescing the device here since the
2694 * adapter firmware does it for us.
2696 scsi_set_tag_type(sdev
, tag_type
);
2699 scsi_activate_tcq(sdev
, sdev
->queue_depth
);
2701 scsi_deactivate_tcq(sdev
, sdev
->queue_depth
);
2707 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2712 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2713 * @dev: device struct
2717 * number of bytes printed to buffer
2719 static ssize_t
ipr_show_adapter_handle(struct device
*dev
, char *buf
)
2721 struct scsi_device
*sdev
= to_scsi_device(dev
);
2722 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)sdev
->host
->hostdata
;
2723 struct ipr_resource_entry
*res
;
2724 unsigned long lock_flags
= 0;
2725 ssize_t len
= -ENXIO
;
2727 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2728 res
= (struct ipr_resource_entry
*)sdev
->hostdata
;
2730 len
= snprintf(buf
, PAGE_SIZE
, "%08X\n", res
->cfgte
.res_handle
);
2731 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2735 static struct device_attribute ipr_adapter_handle_attr
= {
2737 .name
= "adapter_handle",
2740 .show
= ipr_show_adapter_handle
2743 static struct device_attribute
*ipr_dev_attrs
[] = {
2744 &ipr_adapter_handle_attr
,
2749 * ipr_biosparam - Return the HSC mapping
2750 * @sdev: scsi device struct
2751 * @block_device: block device pointer
2752 * @capacity: capacity of the device
2753 * @parm: Array containing returned HSC values.
2755 * This function generates the HSC parms that fdisk uses.
2756 * We want to make sure we return something that places partitions
2757 * on 4k boundaries for best performance with the IOA.
2762 static int ipr_biosparam(struct scsi_device
*sdev
,
2763 struct block_device
*block_device
,
2764 sector_t capacity
, int *parm
)
2772 cylinders
= capacity
;
2773 sector_div(cylinders
, (128 * 32));
2778 parm
[2] = cylinders
;
2784 * ipr_slave_destroy - Unconfigure a SCSI device
2785 * @sdev: scsi device struct
2790 static void ipr_slave_destroy(struct scsi_device
*sdev
)
2792 struct ipr_resource_entry
*res
;
2793 struct ipr_ioa_cfg
*ioa_cfg
;
2794 unsigned long lock_flags
= 0;
2796 ioa_cfg
= (struct ipr_ioa_cfg
*) sdev
->host
->hostdata
;
2798 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2799 res
= (struct ipr_resource_entry
*) sdev
->hostdata
;
2801 sdev
->hostdata
= NULL
;
2804 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2808 * ipr_slave_configure - Configure a SCSI device
2809 * @sdev: scsi device struct
2811 * This function configures the specified scsi device.
2816 static int ipr_slave_configure(struct scsi_device
*sdev
)
2818 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*) sdev
->host
->hostdata
;
2819 struct ipr_resource_entry
*res
;
2820 unsigned long lock_flags
= 0;
2822 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2823 res
= sdev
->hostdata
;
2825 if (ipr_is_af_dasd_device(res
))
2826 sdev
->type
= TYPE_RAID
;
2827 if (ipr_is_af_dasd_device(res
) || ipr_is_ioa_resource(res
))
2828 sdev
->scsi_level
= 4;
2829 if (ipr_is_vset_device(res
)) {
2830 sdev
->timeout
= IPR_VSET_RW_TIMEOUT
;
2831 blk_queue_max_sectors(sdev
->request_queue
, IPR_VSET_MAX_SECTORS
);
2833 if (IPR_IS_DASD_DEVICE(res
->cfgte
.std_inq_data
))
2834 sdev
->allow_restart
= 1;
2835 scsi_adjust_queue_depth(sdev
, 0, sdev
->host
->cmd_per_lun
);
2837 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2842 * ipr_slave_alloc - Prepare for commands to a device.
2843 * @sdev: scsi device struct
2845 * This function saves a pointer to the resource entry
2846 * in the scsi device struct if the device exists. We
2847 * can then use this pointer in ipr_queuecommand when
2848 * handling new commands.
2853 static int ipr_slave_alloc(struct scsi_device
*sdev
)
2855 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*) sdev
->host
->hostdata
;
2856 struct ipr_resource_entry
*res
;
2857 unsigned long lock_flags
;
2859 sdev
->hostdata
= NULL
;
2861 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
2863 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
2864 if ((res
->cfgte
.res_addr
.bus
== sdev
->channel
) &&
2865 (res
->cfgte
.res_addr
.target
== sdev
->id
) &&
2866 (res
->cfgte
.res_addr
.lun
== sdev
->lun
)) {
2870 sdev
->hostdata
= res
;
2871 res
->needs_sync_complete
= 1;
2876 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
2882 * ipr_eh_host_reset - Reset the host adapter
2883 * @scsi_cmd: scsi command struct
2888 static int ipr_eh_host_reset(struct scsi_cmnd
* scsi_cmd
)
2890 struct ipr_ioa_cfg
*ioa_cfg
;
2894 ioa_cfg
= (struct ipr_ioa_cfg
*) scsi_cmd
->device
->host
->hostdata
;
2896 dev_err(&ioa_cfg
->pdev
->dev
,
2897 "Adapter being reset as a result of error recovery.\n");
2899 if (WAIT_FOR_DUMP
== ioa_cfg
->sdt_state
)
2900 ioa_cfg
->sdt_state
= GET_DUMP
;
2902 rc
= ipr_reset_reload(ioa_cfg
, IPR_SHUTDOWN_ABBREV
);
2909 * ipr_eh_dev_reset - Reset the device
2910 * @scsi_cmd: scsi command struct
2912 * This function issues a device reset to the affected device.
2913 * A LUN reset will be sent to the device first. If that does
2914 * not work, a target reset will be sent.
2919 static int __ipr_eh_dev_reset(struct scsi_cmnd
* scsi_cmd
)
2921 struct ipr_cmnd
*ipr_cmd
;
2922 struct ipr_ioa_cfg
*ioa_cfg
;
2923 struct ipr_resource_entry
*res
;
2924 struct ipr_cmd_pkt
*cmd_pkt
;
2928 ioa_cfg
= (struct ipr_ioa_cfg
*) scsi_cmd
->device
->host
->hostdata
;
2929 res
= scsi_cmd
->device
->hostdata
;
2931 if (!res
|| (!ipr_is_gscsi(res
) && !ipr_is_vset_device(res
)))
2935 * If we are currently going through reset/reload, return failed. This will force the
2936 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2939 if (ioa_cfg
->in_reset_reload
)
2941 if (ioa_cfg
->ioa_is_dead
)
2944 list_for_each_entry(ipr_cmd
, &ioa_cfg
->pending_q
, queue
) {
2945 if (ipr_cmd
->ioarcb
.res_handle
== res
->cfgte
.res_handle
) {
2946 if (ipr_cmd
->scsi_cmd
)
2947 ipr_cmd
->done
= ipr_scsi_eh_done
;
2951 res
->resetting_device
= 1;
2953 ipr_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
2955 ipr_cmd
->ioarcb
.res_handle
= res
->cfgte
.res_handle
;
2956 cmd_pkt
= &ipr_cmd
->ioarcb
.cmd_pkt
;
2957 cmd_pkt
->request_type
= IPR_RQTYPE_IOACMD
;
2958 cmd_pkt
->cdb
[0] = IPR_RESET_DEVICE
;
2960 ipr_sdev_err(scsi_cmd
->device
, "Resetting device\n");
2961 ipr_send_blocking_cmd(ipr_cmd
, ipr_timeout
, IPR_DEVICE_RESET_TIMEOUT
);
2963 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
2965 res
->resetting_device
= 0;
2967 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
2970 return (IPR_IOASC_SENSE_KEY(ioasc
) ? FAILED
: SUCCESS
);
2973 static int ipr_eh_dev_reset(struct scsi_cmnd
* cmd
)
2977 spin_lock_irq(cmd
->device
->host
->host_lock
);
2978 rc
= __ipr_eh_dev_reset(cmd
);
2979 spin_unlock_irq(cmd
->device
->host
->host_lock
);
2985 * ipr_bus_reset_done - Op done function for bus reset.
2986 * @ipr_cmd: ipr command struct
2988 * This function is the op done function for a bus reset
2993 static void ipr_bus_reset_done(struct ipr_cmnd
*ipr_cmd
)
2995 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
2996 struct ipr_resource_entry
*res
;
2999 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
3000 if (!memcmp(&res
->cfgte
.res_handle
, &ipr_cmd
->ioarcb
.res_handle
,
3001 sizeof(res
->cfgte
.res_handle
))) {
3002 scsi_report_bus_reset(ioa_cfg
->host
, res
->cfgte
.res_addr
.bus
);
3008 * If abort has not completed, indicate the reset has, else call the
3009 * abort's done function to wake the sleeping eh thread
3011 if (ipr_cmd
->sibling
->sibling
)
3012 ipr_cmd
->sibling
->sibling
= NULL
;
3014 ipr_cmd
->sibling
->done(ipr_cmd
->sibling
);
3016 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3021 * ipr_abort_timeout - An abort task has timed out
3022 * @ipr_cmd: ipr command struct
3024 * This function handles when an abort task times out. If this
3025 * happens we issue a bus reset since we have resources tied
3026 * up that must be freed before returning to the midlayer.
3031 static void ipr_abort_timeout(struct ipr_cmnd
*ipr_cmd
)
3033 struct ipr_cmnd
*reset_cmd
;
3034 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
3035 struct ipr_cmd_pkt
*cmd_pkt
;
3036 unsigned long lock_flags
= 0;
3039 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
3040 if (ipr_cmd
->completion
.done
|| ioa_cfg
->in_reset_reload
) {
3041 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3045 ipr_sdev_err(ipr_cmd
->u
.sdev
, "Abort timed out. Resetting bus\n");
3046 reset_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
3047 ipr_cmd
->sibling
= reset_cmd
;
3048 reset_cmd
->sibling
= ipr_cmd
;
3049 reset_cmd
->ioarcb
.res_handle
= ipr_cmd
->ioarcb
.res_handle
;
3050 cmd_pkt
= &reset_cmd
->ioarcb
.cmd_pkt
;
3051 cmd_pkt
->request_type
= IPR_RQTYPE_IOACMD
;
3052 cmd_pkt
->cdb
[0] = IPR_RESET_DEVICE
;
3053 cmd_pkt
->cdb
[2] = IPR_RESET_TYPE_SELECT
| IPR_BUS_RESET
;
3055 ipr_do_req(reset_cmd
, ipr_bus_reset_done
, ipr_timeout
, IPR_DEVICE_RESET_TIMEOUT
);
3056 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3061 * ipr_cancel_op - Cancel specified op
3062 * @scsi_cmd: scsi command struct
3064 * This function cancels specified op.
3069 static int ipr_cancel_op(struct scsi_cmnd
* scsi_cmd
)
3071 struct ipr_cmnd
*ipr_cmd
;
3072 struct ipr_ioa_cfg
*ioa_cfg
;
3073 struct ipr_resource_entry
*res
;
3074 struct ipr_cmd_pkt
*cmd_pkt
;
3079 ioa_cfg
= (struct ipr_ioa_cfg
*)scsi_cmd
->device
->host
->hostdata
;
3080 res
= scsi_cmd
->device
->hostdata
;
3082 /* If we are currently going through reset/reload, return failed.
3083 * This will force the mid-layer to call ipr_eh_host_reset,
3084 * which will then go to sleep and wait for the reset to complete
3086 if (ioa_cfg
->in_reset_reload
|| ioa_cfg
->ioa_is_dead
)
3088 if (!res
|| (!ipr_is_gscsi(res
) && !ipr_is_vset_device(res
)))
3091 list_for_each_entry(ipr_cmd
, &ioa_cfg
->pending_q
, queue
) {
3092 if (ipr_cmd
->scsi_cmd
== scsi_cmd
) {
3093 ipr_cmd
->done
= ipr_scsi_eh_done
;
3102 ipr_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
3103 ipr_cmd
->ioarcb
.res_handle
= res
->cfgte
.res_handle
;
3104 cmd_pkt
= &ipr_cmd
->ioarcb
.cmd_pkt
;
3105 cmd_pkt
->request_type
= IPR_RQTYPE_IOACMD
;
3106 cmd_pkt
->cdb
[0] = IPR_CANCEL_ALL_REQUESTS
;
3107 ipr_cmd
->u
.sdev
= scsi_cmd
->device
;
3109 ipr_sdev_err(scsi_cmd
->device
, "Aborting command: %02X\n", scsi_cmd
->cmnd
[0]);
3110 ipr_send_blocking_cmd(ipr_cmd
, ipr_abort_timeout
, IPR_CANCEL_ALL_TIMEOUT
);
3111 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3114 * If the abort task timed out and we sent a bus reset, we will get
3115 * one the following responses to the abort
3117 if (ioasc
== IPR_IOASC_BUS_WAS_RESET
|| ioasc
== IPR_IOASC_SYNC_REQUIRED
) {
3122 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3123 res
->needs_sync_complete
= 1;
3126 return (IPR_IOASC_SENSE_KEY(ioasc
) ? FAILED
: SUCCESS
);
3130 * ipr_eh_abort - Abort a single op
3131 * @scsi_cmd: scsi command struct
3136 static int ipr_eh_abort(struct scsi_cmnd
* scsi_cmd
)
3138 unsigned long flags
;
3143 spin_lock_irqsave(scsi_cmd
->device
->host
->host_lock
, flags
);
3144 rc
= ipr_cancel_op(scsi_cmd
);
3145 spin_unlock_irqrestore(scsi_cmd
->device
->host
->host_lock
, flags
);
3152 * ipr_handle_other_interrupt - Handle "other" interrupts
3153 * @ioa_cfg: ioa config struct
3154 * @int_reg: interrupt register
3157 * IRQ_NONE / IRQ_HANDLED
3159 static irqreturn_t
ipr_handle_other_interrupt(struct ipr_ioa_cfg
*ioa_cfg
,
3160 volatile u32 int_reg
)
3162 irqreturn_t rc
= IRQ_HANDLED
;
3164 if (int_reg
& IPR_PCII_IOA_TRANS_TO_OPER
) {
3165 /* Mask the interrupt */
3166 writel(IPR_PCII_IOA_TRANS_TO_OPER
, ioa_cfg
->regs
.set_interrupt_mask_reg
);
3168 /* Clear the interrupt */
3169 writel(IPR_PCII_IOA_TRANS_TO_OPER
, ioa_cfg
->regs
.clr_interrupt_reg
);
3170 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
);
3172 list_del(&ioa_cfg
->reset_cmd
->queue
);
3173 del_timer(&ioa_cfg
->reset_cmd
->timer
);
3174 ipr_reset_ioa_job(ioa_cfg
->reset_cmd
);
3176 if (int_reg
& IPR_PCII_IOA_UNIT_CHECKED
)
3177 ioa_cfg
->ioa_unit_checked
= 1;
3179 dev_err(&ioa_cfg
->pdev
->dev
,
3180 "Permanent IOA failure. 0x%08X\n", int_reg
);
3182 if (WAIT_FOR_DUMP
== ioa_cfg
->sdt_state
)
3183 ioa_cfg
->sdt_state
= GET_DUMP
;
3185 ipr_mask_and_clear_interrupts(ioa_cfg
, ~0);
3186 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
3193 * ipr_isr - Interrupt service routine
3195 * @devp: pointer to ioa config struct
3196 * @regs: pt_regs struct
3199 * IRQ_NONE / IRQ_HANDLED
3201 static irqreturn_t
ipr_isr(int irq
, void *devp
, struct pt_regs
*regs
)
3203 struct ipr_ioa_cfg
*ioa_cfg
= (struct ipr_ioa_cfg
*)devp
;
3204 unsigned long lock_flags
= 0;
3205 volatile u32 int_reg
, int_mask_reg
;
3208 struct ipr_cmnd
*ipr_cmd
;
3209 irqreturn_t rc
= IRQ_NONE
;
3211 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
3213 /* If interrupts are disabled, ignore the interrupt */
3214 if (!ioa_cfg
->allow_interrupts
) {
3215 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3219 int_mask_reg
= readl(ioa_cfg
->regs
.sense_interrupt_mask_reg
);
3220 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
) & ~int_mask_reg
;
3222 /* If an interrupt on the adapter did not occur, ignore it */
3223 if (unlikely((int_reg
& IPR_PCII_OPER_INTERRUPTS
) == 0)) {
3224 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3231 while ((be32_to_cpu(*ioa_cfg
->hrrq_curr
) & IPR_HRRQ_TOGGLE_BIT
) ==
3232 ioa_cfg
->toggle_bit
) {
3234 cmd_index
= (be32_to_cpu(*ioa_cfg
->hrrq_curr
) &
3235 IPR_HRRQ_REQ_RESP_HANDLE_MASK
) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT
;
3237 if (unlikely(cmd_index
>= IPR_NUM_CMD_BLKS
)) {
3238 ioa_cfg
->errors_logged
++;
3239 dev_err(&ioa_cfg
->pdev
->dev
, "Invalid response handle from IOA\n");
3241 if (WAIT_FOR_DUMP
== ioa_cfg
->sdt_state
)
3242 ioa_cfg
->sdt_state
= GET_DUMP
;
3244 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
3245 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3249 ipr_cmd
= ioa_cfg
->ipr_cmnd_list
[cmd_index
];
3251 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3253 ipr_trc_hook(ipr_cmd
, IPR_TRACE_FINISH
, ioasc
);
3255 list_del(&ipr_cmd
->queue
);
3256 del_timer(&ipr_cmd
->timer
);
3257 ipr_cmd
->done(ipr_cmd
);
3261 if (ioa_cfg
->hrrq_curr
< ioa_cfg
->hrrq_end
) {
3262 ioa_cfg
->hrrq_curr
++;
3264 ioa_cfg
->hrrq_curr
= ioa_cfg
->hrrq_start
;
3265 ioa_cfg
->toggle_bit
^= 1u;
3269 if (ipr_cmd
!= NULL
) {
3270 /* Clear the PCI interrupt */
3271 writel(IPR_PCII_HRRQ_UPDATED
, ioa_cfg
->regs
.clr_interrupt_reg
);
3272 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
) & ~int_mask_reg
;
3277 if (unlikely(rc
== IRQ_NONE
))
3278 rc
= ipr_handle_other_interrupt(ioa_cfg
, int_reg
);
3280 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
3285 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3286 * @ioa_cfg: ioa config struct
3287 * @ipr_cmd: ipr command struct
3290 * 0 on success / -1 on failure
3292 static int ipr_build_ioadl(struct ipr_ioa_cfg
*ioa_cfg
,
3293 struct ipr_cmnd
*ipr_cmd
)
3296 struct scatterlist
*sglist
;
3298 u32 ioadl_flags
= 0;
3299 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
3300 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
3301 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
3303 length
= scsi_cmd
->request_bufflen
;
3308 if (scsi_cmd
->use_sg
) {
3309 ipr_cmd
->dma_use_sg
= pci_map_sg(ioa_cfg
->pdev
,
3310 scsi_cmd
->request_buffer
,
3312 scsi_cmd
->sc_data_direction
);
3314 if (scsi_cmd
->sc_data_direction
== DMA_TO_DEVICE
) {
3315 ioadl_flags
= IPR_IOADL_FLAGS_WRITE
;
3316 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_WRITE_NOT_READ
;
3317 ioarcb
->write_data_transfer_length
= cpu_to_be32(length
);
3318 ioarcb
->write_ioadl_len
=
3319 cpu_to_be32(sizeof(struct ipr_ioadl_desc
) * ipr_cmd
->dma_use_sg
);
3320 } else if (scsi_cmd
->sc_data_direction
== DMA_FROM_DEVICE
) {
3321 ioadl_flags
= IPR_IOADL_FLAGS_READ
;
3322 ioarcb
->read_data_transfer_length
= cpu_to_be32(length
);
3323 ioarcb
->read_ioadl_len
=
3324 cpu_to_be32(sizeof(struct ipr_ioadl_desc
) * ipr_cmd
->dma_use_sg
);
3327 sglist
= scsi_cmd
->request_buffer
;
3329 for (i
= 0; i
< ipr_cmd
->dma_use_sg
; i
++) {
3330 ioadl
[i
].flags_and_data_len
=
3331 cpu_to_be32(ioadl_flags
| sg_dma_len(&sglist
[i
]));
3333 cpu_to_be32(sg_dma_address(&sglist
[i
]));
3336 if (likely(ipr_cmd
->dma_use_sg
)) {
3337 ioadl
[i
-1].flags_and_data_len
|=
3338 cpu_to_be32(IPR_IOADL_FLAGS_LAST
);
3341 dev_err(&ioa_cfg
->pdev
->dev
, "pci_map_sg failed!\n");
3343 if (scsi_cmd
->sc_data_direction
== DMA_TO_DEVICE
) {
3344 ioadl_flags
= IPR_IOADL_FLAGS_WRITE
;
3345 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_WRITE_NOT_READ
;
3346 ioarcb
->write_data_transfer_length
= cpu_to_be32(length
);
3347 ioarcb
->write_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
3348 } else if (scsi_cmd
->sc_data_direction
== DMA_FROM_DEVICE
) {
3349 ioadl_flags
= IPR_IOADL_FLAGS_READ
;
3350 ioarcb
->read_data_transfer_length
= cpu_to_be32(length
);
3351 ioarcb
->read_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
3354 ipr_cmd
->dma_handle
= pci_map_single(ioa_cfg
->pdev
,
3355 scsi_cmd
->request_buffer
, length
,
3356 scsi_cmd
->sc_data_direction
);
3358 if (likely(!pci_dma_mapping_error(ipr_cmd
->dma_handle
))) {
3359 ipr_cmd
->dma_use_sg
= 1;
3360 ioadl
[0].flags_and_data_len
=
3361 cpu_to_be32(ioadl_flags
| length
| IPR_IOADL_FLAGS_LAST
);
3362 ioadl
[0].address
= cpu_to_be32(ipr_cmd
->dma_handle
);
3365 dev_err(&ioa_cfg
->pdev
->dev
, "pci_map_single failed!\n");
3372 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3373 * @scsi_cmd: scsi command struct
3378 static u8
ipr_get_task_attributes(struct scsi_cmnd
*scsi_cmd
)
3381 u8 rc
= IPR_FLAGS_LO_UNTAGGED_TASK
;
3383 if (scsi_populate_tag_msg(scsi_cmd
, tag
)) {
3385 case MSG_SIMPLE_TAG
:
3386 rc
= IPR_FLAGS_LO_SIMPLE_TASK
;
3389 rc
= IPR_FLAGS_LO_HEAD_OF_Q_TASK
;
3391 case MSG_ORDERED_TAG
:
3392 rc
= IPR_FLAGS_LO_ORDERED_TASK
;
3401 * ipr_erp_done - Process completion of ERP for a device
3402 * @ipr_cmd: ipr command struct
3404 * This function copies the sense buffer into the scsi_cmd
3405 * struct and pushes the scsi_done function.
3410 static void ipr_erp_done(struct ipr_cmnd
*ipr_cmd
)
3412 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
3413 struct ipr_resource_entry
*res
= scsi_cmd
->device
->hostdata
;
3414 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
3415 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3417 if (IPR_IOASC_SENSE_KEY(ioasc
) > 0) {
3418 scsi_cmd
->result
|= (DID_ERROR
<< 16);
3419 ipr_sdev_err(scsi_cmd
->device
,
3420 "Request Sense failed with IOASC: 0x%08X\n", ioasc
);
3422 memcpy(scsi_cmd
->sense_buffer
, ipr_cmd
->sense_buffer
,
3423 SCSI_SENSE_BUFFERSIZE
);
3427 res
->needs_sync_complete
= 1;
3430 ipr_unmap_sglist(ioa_cfg
, ipr_cmd
);
3431 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3432 scsi_cmd
->scsi_done(scsi_cmd
);
3436 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3437 * @ipr_cmd: ipr command struct
3442 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd
*ipr_cmd
)
3444 struct ipr_ioarcb
*ioarcb
;
3445 struct ipr_ioasa
*ioasa
;
3447 ioarcb
= &ipr_cmd
->ioarcb
;
3448 ioasa
= &ipr_cmd
->ioasa
;
3450 memset(&ioarcb
->cmd_pkt
, 0, sizeof(struct ipr_cmd_pkt
));
3451 ioarcb
->write_data_transfer_length
= 0;
3452 ioarcb
->read_data_transfer_length
= 0;
3453 ioarcb
->write_ioadl_len
= 0;
3454 ioarcb
->read_ioadl_len
= 0;
3456 ioasa
->residual_data_len
= 0;
3460 * ipr_erp_request_sense - Send request sense to a device
3461 * @ipr_cmd: ipr command struct
3463 * This function sends a request sense to a device as a result
3464 * of a check condition.
3469 static void ipr_erp_request_sense(struct ipr_cmnd
*ipr_cmd
)
3471 struct ipr_cmd_pkt
*cmd_pkt
= &ipr_cmd
->ioarcb
.cmd_pkt
;
3472 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3474 if (IPR_IOASC_SENSE_KEY(ioasc
) > 0) {
3475 ipr_erp_done(ipr_cmd
);
3479 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd
);
3481 cmd_pkt
->request_type
= IPR_RQTYPE_SCSICDB
;
3482 cmd_pkt
->cdb
[0] = REQUEST_SENSE
;
3483 cmd_pkt
->cdb
[4] = SCSI_SENSE_BUFFERSIZE
;
3484 cmd_pkt
->flags_hi
|= IPR_FLAGS_HI_SYNC_OVERRIDE
;
3485 cmd_pkt
->flags_hi
|= IPR_FLAGS_HI_NO_ULEN_CHK
;
3486 cmd_pkt
->timeout
= cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT
/ HZ
);
3488 ipr_cmd
->ioadl
[0].flags_and_data_len
=
3489 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST
| SCSI_SENSE_BUFFERSIZE
);
3490 ipr_cmd
->ioadl
[0].address
=
3491 cpu_to_be32(ipr_cmd
->sense_buffer_dma
);
3493 ipr_cmd
->ioarcb
.read_ioadl_len
=
3494 cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
3495 ipr_cmd
->ioarcb
.read_data_transfer_length
=
3496 cpu_to_be32(SCSI_SENSE_BUFFERSIZE
);
3498 ipr_do_req(ipr_cmd
, ipr_erp_done
, ipr_timeout
,
3499 IPR_REQUEST_SENSE_TIMEOUT
* 2);
3503 * ipr_erp_cancel_all - Send cancel all to a device
3504 * @ipr_cmd: ipr command struct
3506 * This function sends a cancel all to a device to clear the
3507 * queue. If we are running TCQ on the device, QERR is set to 1,
3508 * which means all outstanding ops have been dropped on the floor.
3509 * Cancel all will return them to us.
3514 static void ipr_erp_cancel_all(struct ipr_cmnd
*ipr_cmd
)
3516 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
3517 struct ipr_resource_entry
*res
= scsi_cmd
->device
->hostdata
;
3518 struct ipr_cmd_pkt
*cmd_pkt
;
3522 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd
);
3524 if (!scsi_get_tag_type(scsi_cmd
->device
)) {
3525 ipr_erp_request_sense(ipr_cmd
);
3529 cmd_pkt
= &ipr_cmd
->ioarcb
.cmd_pkt
;
3530 cmd_pkt
->request_type
= IPR_RQTYPE_IOACMD
;
3531 cmd_pkt
->cdb
[0] = IPR_CANCEL_ALL_REQUESTS
;
3533 ipr_do_req(ipr_cmd
, ipr_erp_request_sense
, ipr_timeout
,
3534 IPR_CANCEL_ALL_TIMEOUT
);
3538 * ipr_dump_ioasa - Dump contents of IOASA
3539 * @ioa_cfg: ioa config struct
3540 * @ipr_cmd: ipr command struct
3542 * This function is invoked by the interrupt handler when ops
3543 * fail. It will log the IOASA if appropriate. Only called
3549 static void ipr_dump_ioasa(struct ipr_ioa_cfg
*ioa_cfg
,
3550 struct ipr_cmnd
*ipr_cmd
)
3555 struct ipr_ioasa
*ioasa
= &ipr_cmd
->ioasa
;
3556 __be32
*ioasa_data
= (__be32
*)ioasa
;
3559 ioasc
= be32_to_cpu(ioasa
->ioasc
) & IPR_IOASC_IOASC_MASK
;
3564 if (ioa_cfg
->log_level
< IPR_DEFAULT_LOG_LEVEL
)
3567 error_index
= ipr_get_error(ioasc
);
3569 if (ioa_cfg
->log_level
< IPR_MAX_LOG_LEVEL
) {
3570 /* Don't log an error if the IOA already logged one */
3571 if (ioasa
->ilid
!= 0)
3574 if (ipr_error_table
[error_index
].log_ioasa
== 0)
3578 ipr_sdev_err(ipr_cmd
->scsi_cmd
->device
, "%s\n",
3579 ipr_error_table
[error_index
].error
);
3581 if ((ioasa
->u
.gpdd
.end_state
<= ARRAY_SIZE(ipr_gpdd_dev_end_states
)) &&
3582 (ioasa
->u
.gpdd
.bus_phase
<= ARRAY_SIZE(ipr_gpdd_dev_bus_phases
))) {
3583 ipr_sdev_err(ipr_cmd
->scsi_cmd
->device
,
3584 "Device End state: %s Phase: %s\n",
3585 ipr_gpdd_dev_end_states
[ioasa
->u
.gpdd
.end_state
],
3586 ipr_gpdd_dev_bus_phases
[ioasa
->u
.gpdd
.bus_phase
]);
3589 if (sizeof(struct ipr_ioasa
) < be16_to_cpu(ioasa
->ret_stat_len
))
3590 data_len
= sizeof(struct ipr_ioasa
);
3592 data_len
= be16_to_cpu(ioasa
->ret_stat_len
);
3594 ipr_err("IOASA Dump:\n");
3596 for (i
= 0; i
< data_len
/ 4; i
+= 4) {
3597 ipr_err("%08X: %08X %08X %08X %08X\n", i
*4,
3598 be32_to_cpu(ioasa_data
[i
]),
3599 be32_to_cpu(ioasa_data
[i
+1]),
3600 be32_to_cpu(ioasa_data
[i
+2]),
3601 be32_to_cpu(ioasa_data
[i
+3]));
3606 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3608 * @sense_buf: sense data buffer
3613 static void ipr_gen_sense(struct ipr_cmnd
*ipr_cmd
)
3616 u8
*sense_buf
= ipr_cmd
->scsi_cmd
->sense_buffer
;
3617 struct ipr_resource_entry
*res
= ipr_cmd
->scsi_cmd
->device
->hostdata
;
3618 struct ipr_ioasa
*ioasa
= &ipr_cmd
->ioasa
;
3619 u32 ioasc
= be32_to_cpu(ioasa
->ioasc
);
3621 memset(sense_buf
, 0, SCSI_SENSE_BUFFERSIZE
);
3623 if (ioasc
>= IPR_FIRST_DRIVER_IOASC
)
3626 ipr_cmd
->scsi_cmd
->result
= SAM_STAT_CHECK_CONDITION
;
3628 if (ipr_is_vset_device(res
) &&
3629 ioasc
== IPR_IOASC_MED_DO_NOT_REALLOC
&&
3630 ioasa
->u
.vset
.failing_lba_hi
!= 0) {
3631 sense_buf
[0] = 0x72;
3632 sense_buf
[1] = IPR_IOASC_SENSE_KEY(ioasc
);
3633 sense_buf
[2] = IPR_IOASC_SENSE_CODE(ioasc
);
3634 sense_buf
[3] = IPR_IOASC_SENSE_QUAL(ioasc
);
3638 sense_buf
[9] = 0x0A;
3639 sense_buf
[10] = 0x80;
3641 failing_lba
= be32_to_cpu(ioasa
->u
.vset
.failing_lba_hi
);
3643 sense_buf
[12] = (failing_lba
& 0xff000000) >> 24;
3644 sense_buf
[13] = (failing_lba
& 0x00ff0000) >> 16;
3645 sense_buf
[14] = (failing_lba
& 0x0000ff00) >> 8;
3646 sense_buf
[15] = failing_lba
& 0x000000ff;
3648 failing_lba
= be32_to_cpu(ioasa
->u
.vset
.failing_lba_lo
);
3650 sense_buf
[16] = (failing_lba
& 0xff000000) >> 24;
3651 sense_buf
[17] = (failing_lba
& 0x00ff0000) >> 16;
3652 sense_buf
[18] = (failing_lba
& 0x0000ff00) >> 8;
3653 sense_buf
[19] = failing_lba
& 0x000000ff;
3655 sense_buf
[0] = 0x70;
3656 sense_buf
[2] = IPR_IOASC_SENSE_KEY(ioasc
);
3657 sense_buf
[12] = IPR_IOASC_SENSE_CODE(ioasc
);
3658 sense_buf
[13] = IPR_IOASC_SENSE_QUAL(ioasc
);
3660 /* Illegal request */
3661 if ((IPR_IOASC_SENSE_KEY(ioasc
) == 0x05) &&
3662 (be32_to_cpu(ioasa
->ioasc_specific
) & IPR_FIELD_POINTER_VALID
)) {
3663 sense_buf
[7] = 10; /* additional length */
3665 /* IOARCB was in error */
3666 if (IPR_IOASC_SENSE_CODE(ioasc
) == 0x24)
3667 sense_buf
[15] = 0xC0;
3668 else /* Parameter data was invalid */
3669 sense_buf
[15] = 0x80;
3672 ((IPR_FIELD_POINTER_MASK
&
3673 be32_to_cpu(ioasa
->ioasc_specific
)) >> 8) & 0xff;
3675 (IPR_FIELD_POINTER_MASK
&
3676 be32_to_cpu(ioasa
->ioasc_specific
)) & 0xff;
3678 if (ioasc
== IPR_IOASC_MED_DO_NOT_REALLOC
) {
3679 if (ipr_is_vset_device(res
))
3680 failing_lba
= be32_to_cpu(ioasa
->u
.vset
.failing_lba_lo
);
3682 failing_lba
= be32_to_cpu(ioasa
->u
.dasd
.failing_lba
);
3684 sense_buf
[0] |= 0x80; /* Or in the Valid bit */
3685 sense_buf
[3] = (failing_lba
& 0xff000000) >> 24;
3686 sense_buf
[4] = (failing_lba
& 0x00ff0000) >> 16;
3687 sense_buf
[5] = (failing_lba
& 0x0000ff00) >> 8;
3688 sense_buf
[6] = failing_lba
& 0x000000ff;
3691 sense_buf
[7] = 6; /* additional length */
3697 * ipr_erp_start - Process an error response for a SCSI op
3698 * @ioa_cfg: ioa config struct
3699 * @ipr_cmd: ipr command struct
3701 * This function determines whether or not to initiate ERP
3702 * on the affected device.
3707 static void ipr_erp_start(struct ipr_ioa_cfg
*ioa_cfg
,
3708 struct ipr_cmnd
*ipr_cmd
)
3710 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
3711 struct ipr_resource_entry
*res
= scsi_cmd
->device
->hostdata
;
3712 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3715 ipr_scsi_eh_done(ipr_cmd
);
3719 if (ipr_is_gscsi(res
))
3720 ipr_dump_ioasa(ioa_cfg
, ipr_cmd
);
3722 ipr_gen_sense(ipr_cmd
);
3724 switch (ioasc
& IPR_IOASC_IOASC_MASK
) {
3725 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST
:
3726 scsi_cmd
->result
|= (DID_IMM_RETRY
<< 16);
3728 case IPR_IOASC_IR_RESOURCE_HANDLE
:
3729 scsi_cmd
->result
|= (DID_NO_CONNECT
<< 16);
3731 case IPR_IOASC_HW_SEL_TIMEOUT
:
3732 scsi_cmd
->result
|= (DID_NO_CONNECT
<< 16);
3733 res
->needs_sync_complete
= 1;
3735 case IPR_IOASC_SYNC_REQUIRED
:
3737 res
->needs_sync_complete
= 1;
3738 scsi_cmd
->result
|= (DID_IMM_RETRY
<< 16);
3740 case IPR_IOASC_MED_DO_NOT_REALLOC
: /* prevent retries */
3741 scsi_cmd
->result
|= (DID_PASSTHROUGH
<< 16);
3743 case IPR_IOASC_BUS_WAS_RESET
:
3744 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER
:
3746 * Report the bus reset and ask for a retry. The device
3747 * will give CC/UA the next command.
3749 if (!res
->resetting_device
)
3750 scsi_report_bus_reset(ioa_cfg
->host
, scsi_cmd
->device
->channel
);
3751 scsi_cmd
->result
|= (DID_ERROR
<< 16);
3752 res
->needs_sync_complete
= 1;
3754 case IPR_IOASC_HW_DEV_BUS_STATUS
:
3755 scsi_cmd
->result
|= IPR_IOASC_SENSE_STATUS(ioasc
);
3756 if (IPR_IOASC_SENSE_STATUS(ioasc
) == SAM_STAT_CHECK_CONDITION
) {
3757 ipr_erp_cancel_all(ipr_cmd
);
3760 res
->needs_sync_complete
= 1;
3762 case IPR_IOASC_NR_INIT_CMD_REQUIRED
:
3765 scsi_cmd
->result
|= (DID_ERROR
<< 16);
3766 if (!ipr_is_vset_device(res
))
3767 res
->needs_sync_complete
= 1;
3771 ipr_unmap_sglist(ioa_cfg
, ipr_cmd
);
3772 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3773 scsi_cmd
->scsi_done(scsi_cmd
);
3777 * ipr_scsi_done - mid-layer done function
3778 * @ipr_cmd: ipr command struct
3780 * This function is invoked by the interrupt handler for
3781 * ops generated by the SCSI mid-layer
3786 static void ipr_scsi_done(struct ipr_cmnd
*ipr_cmd
)
3788 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
3789 struct scsi_cmnd
*scsi_cmd
= ipr_cmd
->scsi_cmd
;
3790 u32 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
3792 scsi_cmd
->resid
= be32_to_cpu(ipr_cmd
->ioasa
.residual_data_len
);
3794 if (likely(IPR_IOASC_SENSE_KEY(ioasc
) == 0)) {
3795 ipr_unmap_sglist(ioa_cfg
, ipr_cmd
);
3796 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3797 scsi_cmd
->scsi_done(scsi_cmd
);
3799 ipr_erp_start(ioa_cfg
, ipr_cmd
);
3803 * ipr_save_ioafp_mode_select - Save adapters mode select data
3804 * @ioa_cfg: ioa config struct
3805 * @scsi_cmd: scsi command struct
3807 * This function saves mode select data for the adapter to
3808 * use following an adapter reset.
3811 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3813 static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg
*ioa_cfg
,
3814 struct scsi_cmnd
*scsi_cmd
)
3816 if (!ioa_cfg
->saved_mode_pages
) {
3817 ioa_cfg
->saved_mode_pages
= kmalloc(sizeof(struct ipr_mode_pages
),
3819 if (!ioa_cfg
->saved_mode_pages
) {
3820 dev_err(&ioa_cfg
->pdev
->dev
,
3821 "IOA mode select buffer allocation failed\n");
3822 return SCSI_MLQUEUE_HOST_BUSY
;
3826 memcpy(ioa_cfg
->saved_mode_pages
, scsi_cmd
->buffer
, scsi_cmd
->cmnd
[4]);
3827 ioa_cfg
->saved_mode_page_len
= scsi_cmd
->cmnd
[4];
3832 * ipr_queuecommand - Queue a mid-layer request
3833 * @scsi_cmd: scsi command struct
3834 * @done: done function
3836 * This function queues a request generated by the mid-layer.
3840 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3841 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3843 static int ipr_queuecommand(struct scsi_cmnd
*scsi_cmd
,
3844 void (*done
) (struct scsi_cmnd
*))
3846 struct ipr_ioa_cfg
*ioa_cfg
;
3847 struct ipr_resource_entry
*res
;
3848 struct ipr_ioarcb
*ioarcb
;
3849 struct ipr_cmnd
*ipr_cmd
;
3852 scsi_cmd
->scsi_done
= done
;
3853 ioa_cfg
= (struct ipr_ioa_cfg
*)scsi_cmd
->device
->host
->hostdata
;
3854 res
= scsi_cmd
->device
->hostdata
;
3855 scsi_cmd
->result
= (DID_OK
<< 16);
3858 * We are currently blocking all devices due to a host reset
3859 * We have told the host to stop giving us new requests, but
3860 * ERP ops don't count. FIXME
3862 if (unlikely(!ioa_cfg
->allow_cmds
&& !ioa_cfg
->ioa_is_dead
))
3863 return SCSI_MLQUEUE_HOST_BUSY
;
3866 * FIXME - Create scsi_set_host_offline interface
3867 * and the ioa_is_dead check can be removed
3869 if (unlikely(ioa_cfg
->ioa_is_dead
|| !res
)) {
3870 memset(scsi_cmd
->sense_buffer
, 0, SCSI_SENSE_BUFFERSIZE
);
3871 scsi_cmd
->result
= (DID_NO_CONNECT
<< 16);
3872 scsi_cmd
->scsi_done(scsi_cmd
);
3876 ipr_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
3877 ioarcb
= &ipr_cmd
->ioarcb
;
3878 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->pending_q
);
3880 memcpy(ioarcb
->cmd_pkt
.cdb
, scsi_cmd
->cmnd
, scsi_cmd
->cmd_len
);
3881 ipr_cmd
->scsi_cmd
= scsi_cmd
;
3882 ioarcb
->res_handle
= res
->cfgte
.res_handle
;
3883 ipr_cmd
->done
= ipr_scsi_done
;
3884 ipr_trc_hook(ipr_cmd
, IPR_TRACE_START
, IPR_GET_PHYS_LOC(res
->cfgte
.res_addr
));
3886 if (ipr_is_gscsi(res
) || ipr_is_vset_device(res
)) {
3887 if (scsi_cmd
->underflow
== 0)
3888 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_NO_ULEN_CHK
;
3890 if (res
->needs_sync_complete
) {
3891 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_SYNC_COMPLETE
;
3892 res
->needs_sync_complete
= 0;
3895 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_NO_LINK_DESC
;
3896 ioarcb
->cmd_pkt
.flags_lo
|= IPR_FLAGS_LO_DELAY_AFTER_RST
;
3897 ioarcb
->cmd_pkt
.flags_lo
|= IPR_FLAGS_LO_ALIGNED_BFR
;
3898 ioarcb
->cmd_pkt
.flags_lo
|= ipr_get_task_attributes(scsi_cmd
);
3901 if (scsi_cmd
->cmnd
[0] >= 0xC0 &&
3902 (!ipr_is_gscsi(res
) || scsi_cmd
->cmnd
[0] == IPR_QUERY_RSRC_STATE
))
3903 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_IOACMD
;
3905 if (ipr_is_ioa_resource(res
) && scsi_cmd
->cmnd
[0] == MODE_SELECT
)
3906 rc
= ipr_save_ioafp_mode_select(ioa_cfg
, scsi_cmd
);
3908 if (likely(rc
== 0))
3909 rc
= ipr_build_ioadl(ioa_cfg
, ipr_cmd
);
3911 if (likely(rc
== 0)) {
3913 writel(be32_to_cpu(ipr_cmd
->ioarcb
.ioarcb_host_pci_addr
),
3914 ioa_cfg
->regs
.ioarrin_reg
);
3916 list_move_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
3917 return SCSI_MLQUEUE_HOST_BUSY
;
3924 * ipr_info - Get information about the card/driver
3925 * @scsi_host: scsi host struct
3928 * pointer to buffer with description string
3930 static const char * ipr_ioa_info(struct Scsi_Host
*host
)
3932 static char buffer
[512];
3933 struct ipr_ioa_cfg
*ioa_cfg
;
3934 unsigned long lock_flags
= 0;
3936 ioa_cfg
= (struct ipr_ioa_cfg
*) host
->hostdata
;
3938 spin_lock_irqsave(host
->host_lock
, lock_flags
);
3939 sprintf(buffer
, "IBM %X Storage Adapter", ioa_cfg
->type
);
3940 spin_unlock_irqrestore(host
->host_lock
, lock_flags
);
3945 static struct scsi_host_template driver_template
= {
3946 .module
= THIS_MODULE
,
3948 .info
= ipr_ioa_info
,
3949 .queuecommand
= ipr_queuecommand
,
3950 .eh_abort_handler
= ipr_eh_abort
,
3951 .eh_device_reset_handler
= ipr_eh_dev_reset
,
3952 .eh_host_reset_handler
= ipr_eh_host_reset
,
3953 .slave_alloc
= ipr_slave_alloc
,
3954 .slave_configure
= ipr_slave_configure
,
3955 .slave_destroy
= ipr_slave_destroy
,
3956 .change_queue_depth
= ipr_change_queue_depth
,
3957 .change_queue_type
= ipr_change_queue_type
,
3958 .bios_param
= ipr_biosparam
,
3959 .can_queue
= IPR_MAX_COMMANDS
,
3961 .sg_tablesize
= IPR_MAX_SGLIST
,
3962 .max_sectors
= IPR_IOA_MAX_SECTORS
,
3963 .cmd_per_lun
= IPR_MAX_CMD_PER_LUN
,
3964 .use_clustering
= ENABLE_CLUSTERING
,
3965 .shost_attrs
= ipr_ioa_attrs
,
3966 .sdev_attrs
= ipr_dev_attrs
,
3967 .proc_name
= IPR_NAME
3970 #ifdef CONFIG_PPC_PSERIES
3971 static const u16 ipr_blocked_processors
[] = {
3983 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3984 * @ioa_cfg: ioa cfg struct
3986 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3987 * certain pSeries hardware. This function determines if the given
3988 * adapter is in one of these confgurations or not.
3991 * 1 if adapter is not supported / 0 if adapter is supported
3993 static int ipr_invalid_adapter(struct ipr_ioa_cfg
*ioa_cfg
)
3998 if (ioa_cfg
->type
== 0x5702) {
3999 if (pci_read_config_byte(ioa_cfg
->pdev
, PCI_REVISION_ID
,
4000 &rev_id
) == PCIBIOS_SUCCESSFUL
) {
4002 for (i
= 0; i
< ARRAY_SIZE(ipr_blocked_processors
); i
++){
4003 if (__is_processor(ipr_blocked_processors
[i
]))
4012 #define ipr_invalid_adapter(ioa_cfg) 0
4016 * ipr_ioa_bringdown_done - IOA bring down completion.
4017 * @ipr_cmd: ipr command struct
4019 * This function processes the completion of an adapter bring down.
4020 * It wakes any reset sleepers.
4025 static int ipr_ioa_bringdown_done(struct ipr_cmnd
*ipr_cmd
)
4027 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4030 ioa_cfg
->in_reset_reload
= 0;
4031 ioa_cfg
->reset_retries
= 0;
4032 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
4033 wake_up_all(&ioa_cfg
->reset_wait_q
);
4035 spin_unlock_irq(ioa_cfg
->host
->host_lock
);
4036 scsi_unblock_requests(ioa_cfg
->host
);
4037 spin_lock_irq(ioa_cfg
->host
->host_lock
);
4040 return IPR_RC_JOB_RETURN
;
4044 * ipr_ioa_reset_done - IOA reset completion.
4045 * @ipr_cmd: ipr command struct
4047 * This function processes the completion of an adapter reset.
4048 * It schedules any necessary mid-layer add/removes and
4049 * wakes any reset sleepers.
4054 static int ipr_ioa_reset_done(struct ipr_cmnd
*ipr_cmd
)
4056 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4057 struct ipr_resource_entry
*res
;
4058 struct ipr_hostrcb
*hostrcb
, *temp
;
4062 ioa_cfg
->in_reset_reload
= 0;
4063 ioa_cfg
->allow_cmds
= 1;
4064 ioa_cfg
->reset_cmd
= NULL
;
4066 list_for_each_entry(res
, &ioa_cfg
->used_res_q
, queue
) {
4067 if (ioa_cfg
->allow_ml_add_del
&& (res
->add_to_ml
|| res
->del_from_ml
)) {
4072 schedule_work(&ioa_cfg
->work_q
);
4074 list_for_each_entry_safe(hostrcb
, temp
, &ioa_cfg
->hostrcb_free_q
, queue
) {
4075 list_del(&hostrcb
->queue
);
4076 if (i
++ < IPR_NUM_LOG_HCAMS
)
4077 ipr_send_hcam(ioa_cfg
, IPR_HCAM_CDB_OP_CODE_LOG_DATA
, hostrcb
);
4079 ipr_send_hcam(ioa_cfg
, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE
, hostrcb
);
4082 dev_info(&ioa_cfg
->pdev
->dev
, "IOA initialized.\n");
4084 ioa_cfg
->reset_retries
= 0;
4085 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
4086 wake_up_all(&ioa_cfg
->reset_wait_q
);
4088 spin_unlock_irq(ioa_cfg
->host
->host_lock
);
4089 scsi_unblock_requests(ioa_cfg
->host
);
4090 spin_lock_irq(ioa_cfg
->host
->host_lock
);
4092 if (!ioa_cfg
->allow_cmds
)
4093 scsi_block_requests(ioa_cfg
->host
);
4096 return IPR_RC_JOB_RETURN
;
4100 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4101 * @supported_dev: supported device struct
4102 * @vpids: vendor product id struct
4107 static void ipr_set_sup_dev_dflt(struct ipr_supported_device
*supported_dev
,
4108 struct ipr_std_inq_vpids
*vpids
)
4110 memset(supported_dev
, 0, sizeof(struct ipr_supported_device
));
4111 memcpy(&supported_dev
->vpids
, vpids
, sizeof(struct ipr_std_inq_vpids
));
4112 supported_dev
->num_records
= 1;
4113 supported_dev
->data_length
=
4114 cpu_to_be16(sizeof(struct ipr_supported_device
));
4115 supported_dev
->reserved
= 0;
4119 * ipr_set_supported_devs - Send Set Supported Devices for a device
4120 * @ipr_cmd: ipr command struct
4122 * This function send a Set Supported Devices to the adapter
4125 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4127 static int ipr_set_supported_devs(struct ipr_cmnd
*ipr_cmd
)
4129 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4130 struct ipr_supported_device
*supp_dev
= &ioa_cfg
->vpd_cbs
->supp_dev
;
4131 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
4132 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4133 struct ipr_resource_entry
*res
= ipr_cmd
->u
.res
;
4135 ipr_cmd
->job_step
= ipr_ioa_reset_done
;
4137 list_for_each_entry_continue(res
, &ioa_cfg
->used_res_q
, queue
) {
4138 if (!ipr_is_af_dasd_device(res
))
4141 ipr_cmd
->u
.res
= res
;
4142 ipr_set_sup_dev_dflt(supp_dev
, &res
->cfgte
.std_inq_data
.vpids
);
4144 ioarcb
->res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
4145 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_WRITE_NOT_READ
;
4146 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_IOACMD
;
4148 ioarcb
->cmd_pkt
.cdb
[0] = IPR_SET_SUPPORTED_DEVICES
;
4149 ioarcb
->cmd_pkt
.cdb
[7] = (sizeof(struct ipr_supported_device
) >> 8) & 0xff;
4150 ioarcb
->cmd_pkt
.cdb
[8] = sizeof(struct ipr_supported_device
) & 0xff;
4152 ioadl
->flags_and_data_len
= cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST
|
4153 sizeof(struct ipr_supported_device
));
4154 ioadl
->address
= cpu_to_be32(ioa_cfg
->vpd_cbs_dma
+
4155 offsetof(struct ipr_misc_cbs
, supp_dev
));
4156 ioarcb
->write_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
4157 ioarcb
->write_data_transfer_length
=
4158 cpu_to_be32(sizeof(struct ipr_supported_device
));
4160 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
,
4161 IPR_SET_SUP_DEVICE_TIMEOUT
);
4163 ipr_cmd
->job_step
= ipr_set_supported_devs
;
4164 return IPR_RC_JOB_RETURN
;
4167 return IPR_RC_JOB_CONTINUE
;
4171 * ipr_get_mode_page - Locate specified mode page
4172 * @mode_pages: mode page buffer
4173 * @page_code: page code to find
4174 * @len: minimum required length for mode page
4177 * pointer to mode page / NULL on failure
4179 static void *ipr_get_mode_page(struct ipr_mode_pages
*mode_pages
,
4180 u32 page_code
, u32 len
)
4182 struct ipr_mode_page_hdr
*mode_hdr
;
4186 if (!mode_pages
|| (mode_pages
->hdr
.length
== 0))
4189 length
= (mode_pages
->hdr
.length
+ 1) - 4 - mode_pages
->hdr
.block_desc_len
;
4190 mode_hdr
= (struct ipr_mode_page_hdr
*)
4191 (mode_pages
->data
+ mode_pages
->hdr
.block_desc_len
);
4194 if (IPR_GET_MODE_PAGE_CODE(mode_hdr
) == page_code
) {
4195 if (mode_hdr
->page_length
>= (len
- sizeof(struct ipr_mode_page_hdr
)))
4199 page_length
= (sizeof(struct ipr_mode_page_hdr
) +
4200 mode_hdr
->page_length
);
4201 length
-= page_length
;
4202 mode_hdr
= (struct ipr_mode_page_hdr
*)
4203 ((unsigned long)mode_hdr
+ page_length
);
4210 * ipr_check_term_power - Check for term power errors
4211 * @ioa_cfg: ioa config struct
4212 * @mode_pages: IOAFP mode pages buffer
4214 * Check the IOAFP's mode page 28 for term power errors
4219 static void ipr_check_term_power(struct ipr_ioa_cfg
*ioa_cfg
,
4220 struct ipr_mode_pages
*mode_pages
)
4224 struct ipr_dev_bus_entry
*bus
;
4225 struct ipr_mode_page28
*mode_page
;
4227 mode_page
= ipr_get_mode_page(mode_pages
, 0x28,
4228 sizeof(struct ipr_mode_page28
));
4230 entry_length
= mode_page
->entry_length
;
4232 bus
= mode_page
->bus
;
4234 for (i
= 0; i
< mode_page
->num_entries
; i
++) {
4235 if (bus
->flags
& IPR_SCSI_ATTR_NO_TERM_PWR
) {
4236 dev_err(&ioa_cfg
->pdev
->dev
,
4237 "Term power is absent on scsi bus %d\n",
4241 bus
= (struct ipr_dev_bus_entry
*)((char *)bus
+ entry_length
);
4246 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4247 * @ioa_cfg: ioa config struct
4249 * Looks through the config table checking for SES devices. If
4250 * the SES device is in the SES table indicating a maximum SCSI
4251 * bus speed, the speed is limited for the bus.
4256 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg
*ioa_cfg
)
4261 for (i
= 0; i
< IPR_MAX_NUM_BUSES
; i
++) {
4262 max_xfer_rate
= ipr_get_max_scsi_speed(ioa_cfg
, i
,
4263 ioa_cfg
->bus_attr
[i
].bus_width
);
4265 if (max_xfer_rate
< ioa_cfg
->bus_attr
[i
].max_xfer_rate
)
4266 ioa_cfg
->bus_attr
[i
].max_xfer_rate
= max_xfer_rate
;
4271 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4272 * @ioa_cfg: ioa config struct
4273 * @mode_pages: mode page 28 buffer
4275 * Updates mode page 28 based on driver configuration
4280 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg
*ioa_cfg
,
4281 struct ipr_mode_pages
*mode_pages
)
4283 int i
, entry_length
;
4284 struct ipr_dev_bus_entry
*bus
;
4285 struct ipr_bus_attributes
*bus_attr
;
4286 struct ipr_mode_page28
*mode_page
;
4288 mode_page
= ipr_get_mode_page(mode_pages
, 0x28,
4289 sizeof(struct ipr_mode_page28
));
4291 entry_length
= mode_page
->entry_length
;
4293 /* Loop for each device bus entry */
4294 for (i
= 0, bus
= mode_page
->bus
;
4295 i
< mode_page
->num_entries
;
4296 i
++, bus
= (struct ipr_dev_bus_entry
*)((u8
*)bus
+ entry_length
)) {
4297 if (bus
->res_addr
.bus
> IPR_MAX_NUM_BUSES
) {
4298 dev_err(&ioa_cfg
->pdev
->dev
,
4299 "Invalid resource address reported: 0x%08X\n",
4300 IPR_GET_PHYS_LOC(bus
->res_addr
));
4304 bus_attr
= &ioa_cfg
->bus_attr
[i
];
4305 bus
->extended_reset_delay
= IPR_EXTENDED_RESET_DELAY
;
4306 bus
->bus_width
= bus_attr
->bus_width
;
4307 bus
->max_xfer_rate
= cpu_to_be32(bus_attr
->max_xfer_rate
);
4308 bus
->flags
&= ~IPR_SCSI_ATTR_QAS_MASK
;
4309 if (bus_attr
->qas_enabled
)
4310 bus
->flags
|= IPR_SCSI_ATTR_ENABLE_QAS
;
4312 bus
->flags
|= IPR_SCSI_ATTR_DISABLE_QAS
;
4317 * ipr_build_mode_select - Build a mode select command
4318 * @ipr_cmd: ipr command struct
4319 * @res_handle: resource handle to send command to
4320 * @parm: Byte 2 of Mode Sense command
4321 * @dma_addr: DMA buffer address
4322 * @xfer_len: data transfer length
4327 static void ipr_build_mode_select(struct ipr_cmnd
*ipr_cmd
,
4328 __be32 res_handle
, u8 parm
, u32 dma_addr
,
4331 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
4332 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4334 ioarcb
->res_handle
= res_handle
;
4335 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_SCSICDB
;
4336 ioarcb
->cmd_pkt
.flags_hi
|= IPR_FLAGS_HI_WRITE_NOT_READ
;
4337 ioarcb
->cmd_pkt
.cdb
[0] = MODE_SELECT
;
4338 ioarcb
->cmd_pkt
.cdb
[1] = parm
;
4339 ioarcb
->cmd_pkt
.cdb
[4] = xfer_len
;
4341 ioadl
->flags_and_data_len
=
4342 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST
| xfer_len
);
4343 ioadl
->address
= cpu_to_be32(dma_addr
);
4344 ioarcb
->write_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
4345 ioarcb
->write_data_transfer_length
= cpu_to_be32(xfer_len
);
4349 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4350 * @ipr_cmd: ipr command struct
4352 * This function sets up the SCSI bus attributes and sends
4353 * a Mode Select for Page 28 to activate them.
4358 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd
*ipr_cmd
)
4360 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4361 struct ipr_mode_pages
*mode_pages
= &ioa_cfg
->vpd_cbs
->mode_pages
;
4365 if (ioa_cfg
->saved_mode_pages
) {
4366 memcpy(mode_pages
, ioa_cfg
->saved_mode_pages
,
4367 ioa_cfg
->saved_mode_page_len
);
4368 length
= ioa_cfg
->saved_mode_page_len
;
4370 ipr_scsi_bus_speed_limit(ioa_cfg
);
4371 ipr_check_term_power(ioa_cfg
, mode_pages
);
4372 ipr_modify_ioafp_mode_page_28(ioa_cfg
, mode_pages
);
4373 length
= mode_pages
->hdr
.length
+ 1;
4374 mode_pages
->hdr
.length
= 0;
4377 ipr_build_mode_select(ipr_cmd
, cpu_to_be32(IPR_IOA_RES_HANDLE
), 0x11,
4378 ioa_cfg
->vpd_cbs_dma
+ offsetof(struct ipr_misc_cbs
, mode_pages
),
4381 ipr_cmd
->job_step
= ipr_set_supported_devs
;
4382 ipr_cmd
->u
.res
= list_entry(ioa_cfg
->used_res_q
.next
,
4383 struct ipr_resource_entry
, queue
);
4385 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, IPR_INTERNAL_TIMEOUT
);
4388 return IPR_RC_JOB_RETURN
;
4392 * ipr_build_mode_sense - Builds a mode sense command
4393 * @ipr_cmd: ipr command struct
4394 * @res: resource entry struct
4395 * @parm: Byte 2 of mode sense command
4396 * @dma_addr: DMA address of mode sense buffer
4397 * @xfer_len: Size of DMA buffer
4402 static void ipr_build_mode_sense(struct ipr_cmnd
*ipr_cmd
,
4404 u8 parm
, u32 dma_addr
, u8 xfer_len
)
4406 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
4407 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4409 ioarcb
->res_handle
= res_handle
;
4410 ioarcb
->cmd_pkt
.cdb
[0] = MODE_SENSE
;
4411 ioarcb
->cmd_pkt
.cdb
[2] = parm
;
4412 ioarcb
->cmd_pkt
.cdb
[4] = xfer_len
;
4413 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_SCSICDB
;
4415 ioadl
->flags_and_data_len
=
4416 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST
| xfer_len
);
4417 ioadl
->address
= cpu_to_be32(dma_addr
);
4418 ioarcb
->read_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
4419 ioarcb
->read_data_transfer_length
= cpu_to_be32(xfer_len
);
4423 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4424 * @ipr_cmd: ipr command struct
4426 * This function send a Page 28 mode sense to the IOA to
4427 * retrieve SCSI bus attributes.
4432 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd
*ipr_cmd
)
4434 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4437 ipr_build_mode_sense(ipr_cmd
, cpu_to_be32(IPR_IOA_RES_HANDLE
),
4438 0x28, ioa_cfg
->vpd_cbs_dma
+
4439 offsetof(struct ipr_misc_cbs
, mode_pages
),
4440 sizeof(struct ipr_mode_pages
));
4442 ipr_cmd
->job_step
= ipr_ioafp_mode_select_page28
;
4444 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, IPR_INTERNAL_TIMEOUT
);
4447 return IPR_RC_JOB_RETURN
;
4451 * ipr_init_res_table - Initialize the resource table
4452 * @ipr_cmd: ipr command struct
4454 * This function looks through the existing resource table, comparing
4455 * it with the config table. This function will take care of old/new
4456 * devices and schedule adding/removing them from the mid-layer
4460 * IPR_RC_JOB_CONTINUE
4462 static int ipr_init_res_table(struct ipr_cmnd
*ipr_cmd
)
4464 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4465 struct ipr_resource_entry
*res
, *temp
;
4466 struct ipr_config_table_entry
*cfgte
;
4471 if (ioa_cfg
->cfg_table
->hdr
.flags
& IPR_UCODE_DOWNLOAD_REQ
)
4472 dev_err(&ioa_cfg
->pdev
->dev
, "Microcode download required\n");
4474 list_for_each_entry_safe(res
, temp
, &ioa_cfg
->used_res_q
, queue
)
4475 list_move_tail(&res
->queue
, &old_res
);
4477 for (i
= 0; i
< ioa_cfg
->cfg_table
->hdr
.num_entries
; i
++) {
4478 cfgte
= &ioa_cfg
->cfg_table
->dev
[i
];
4481 list_for_each_entry_safe(res
, temp
, &old_res
, queue
) {
4482 if (!memcmp(&res
->cfgte
.res_addr
,
4483 &cfgte
->res_addr
, sizeof(cfgte
->res_addr
))) {
4484 list_move_tail(&res
->queue
, &ioa_cfg
->used_res_q
);
4491 if (list_empty(&ioa_cfg
->free_res_q
)) {
4492 dev_err(&ioa_cfg
->pdev
->dev
, "Too many devices attached\n");
4497 res
= list_entry(ioa_cfg
->free_res_q
.next
,
4498 struct ipr_resource_entry
, queue
);
4499 list_move_tail(&res
->queue
, &ioa_cfg
->used_res_q
);
4500 ipr_init_res_entry(res
);
4505 memcpy(&res
->cfgte
, cfgte
, sizeof(struct ipr_config_table_entry
));
4508 list_for_each_entry_safe(res
, temp
, &old_res
, queue
) {
4510 res
->del_from_ml
= 1;
4511 res
->sdev
->hostdata
= NULL
;
4512 list_move_tail(&res
->queue
, &ioa_cfg
->used_res_q
);
4514 list_move_tail(&res
->queue
, &ioa_cfg
->free_res_q
);
4518 ipr_cmd
->job_step
= ipr_ioafp_mode_sense_page28
;
4521 return IPR_RC_JOB_CONTINUE
;
4525 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4526 * @ipr_cmd: ipr command struct
4528 * This function sends a Query IOA Configuration command
4529 * to the adapter to retrieve the IOA configuration table.
4534 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd
*ipr_cmd
)
4536 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4537 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4538 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
4539 struct ipr_inquiry_page3
*ucode_vpd
= &ioa_cfg
->vpd_cbs
->page3_data
;
4542 dev_info(&ioa_cfg
->pdev
->dev
, "Adapter firmware version: %02X%02X%02X%02X\n",
4543 ucode_vpd
->major_release
, ucode_vpd
->card_type
,
4544 ucode_vpd
->minor_release
[0], ucode_vpd
->minor_release
[1]);
4545 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_IOACMD
;
4546 ioarcb
->res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
4548 ioarcb
->cmd_pkt
.cdb
[0] = IPR_QUERY_IOA_CONFIG
;
4549 ioarcb
->cmd_pkt
.cdb
[7] = (sizeof(struct ipr_config_table
) >> 8) & 0xff;
4550 ioarcb
->cmd_pkt
.cdb
[8] = sizeof(struct ipr_config_table
) & 0xff;
4552 ioarcb
->read_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
4553 ioarcb
->read_data_transfer_length
=
4554 cpu_to_be32(sizeof(struct ipr_config_table
));
4556 ioadl
->address
= cpu_to_be32(ioa_cfg
->cfg_table_dma
);
4557 ioadl
->flags_and_data_len
=
4558 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST
| sizeof(struct ipr_config_table
));
4560 ipr_cmd
->job_step
= ipr_init_res_table
;
4562 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, IPR_INTERNAL_TIMEOUT
);
4565 return IPR_RC_JOB_RETURN
;
4569 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4570 * @ipr_cmd: ipr command struct
4572 * This utility function sends an inquiry to the adapter.
4577 static void ipr_ioafp_inquiry(struct ipr_cmnd
*ipr_cmd
, u8 flags
, u8 page
,
4578 u32 dma_addr
, u8 xfer_len
)
4580 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4581 struct ipr_ioadl_desc
*ioadl
= ipr_cmd
->ioadl
;
4584 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_SCSICDB
;
4585 ioarcb
->res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
4587 ioarcb
->cmd_pkt
.cdb
[0] = INQUIRY
;
4588 ioarcb
->cmd_pkt
.cdb
[1] = flags
;
4589 ioarcb
->cmd_pkt
.cdb
[2] = page
;
4590 ioarcb
->cmd_pkt
.cdb
[4] = xfer_len
;
4592 ioarcb
->read_ioadl_len
= cpu_to_be32(sizeof(struct ipr_ioadl_desc
));
4593 ioarcb
->read_data_transfer_length
= cpu_to_be32(xfer_len
);
4595 ioadl
->address
= cpu_to_be32(dma_addr
);
4596 ioadl
->flags_and_data_len
=
4597 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST
| xfer_len
);
4599 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, IPR_INTERNAL_TIMEOUT
);
4604 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4605 * @ipr_cmd: ipr command struct
4607 * This function sends a Page 3 inquiry to the adapter
4608 * to retrieve software VPD information.
4611 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4613 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd
*ipr_cmd
)
4615 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4620 /* Grab the type out of the VPD and store it away */
4621 memcpy(type
, ioa_cfg
->vpd_cbs
->ioa_vpd
.std_inq_data
.vpids
.product_id
, 4);
4623 ioa_cfg
->type
= simple_strtoul((char *)type
, NULL
, 16);
4625 ipr_cmd
->job_step
= ipr_ioafp_query_ioa_cfg
;
4627 ipr_ioafp_inquiry(ipr_cmd
, 1, 3,
4628 ioa_cfg
->vpd_cbs_dma
+ offsetof(struct ipr_misc_cbs
, page3_data
),
4629 sizeof(struct ipr_inquiry_page3
));
4632 return IPR_RC_JOB_RETURN
;
4636 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4637 * @ipr_cmd: ipr command struct
4639 * This function sends a standard inquiry to the adapter.
4644 static int ipr_ioafp_std_inquiry(struct ipr_cmnd
*ipr_cmd
)
4646 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4649 ipr_cmd
->job_step
= ipr_ioafp_page3_inquiry
;
4651 ipr_ioafp_inquiry(ipr_cmd
, 0, 0,
4652 ioa_cfg
->vpd_cbs_dma
+ offsetof(struct ipr_misc_cbs
, ioa_vpd
),
4653 sizeof(struct ipr_ioa_vpd
));
4656 return IPR_RC_JOB_RETURN
;
4660 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4661 * @ipr_cmd: ipr command struct
4663 * This function send an Identify Host Request Response Queue
4664 * command to establish the HRRQ with the adapter.
4669 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd
*ipr_cmd
)
4671 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4672 struct ipr_ioarcb
*ioarcb
= &ipr_cmd
->ioarcb
;
4675 dev_info(&ioa_cfg
->pdev
->dev
, "Starting IOA initialization sequence.\n");
4677 ioarcb
->cmd_pkt
.cdb
[0] = IPR_ID_HOST_RR_Q
;
4678 ioarcb
->res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
4680 ioarcb
->cmd_pkt
.request_type
= IPR_RQTYPE_IOACMD
;
4681 ioarcb
->cmd_pkt
.cdb
[2] =
4682 ((u32
) ioa_cfg
->host_rrq_dma
>> 24) & 0xff;
4683 ioarcb
->cmd_pkt
.cdb
[3] =
4684 ((u32
) ioa_cfg
->host_rrq_dma
>> 16) & 0xff;
4685 ioarcb
->cmd_pkt
.cdb
[4] =
4686 ((u32
) ioa_cfg
->host_rrq_dma
>> 8) & 0xff;
4687 ioarcb
->cmd_pkt
.cdb
[5] =
4688 ((u32
) ioa_cfg
->host_rrq_dma
) & 0xff;
4689 ioarcb
->cmd_pkt
.cdb
[7] =
4690 ((sizeof(u32
) * IPR_NUM_CMD_BLKS
) >> 8) & 0xff;
4691 ioarcb
->cmd_pkt
.cdb
[8] =
4692 (sizeof(u32
) * IPR_NUM_CMD_BLKS
) & 0xff;
4694 ipr_cmd
->job_step
= ipr_ioafp_std_inquiry
;
4696 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, IPR_INTERNAL_TIMEOUT
);
4699 return IPR_RC_JOB_RETURN
;
4703 * ipr_reset_timer_done - Adapter reset timer function
4704 * @ipr_cmd: ipr command struct
4706 * Description: This function is used in adapter reset processing
4707 * for timing events. If the reset_cmd pointer in the IOA
4708 * config struct is not this adapter's we are doing nested
4709 * resets and fail_all_ops will take care of freeing the
4715 static void ipr_reset_timer_done(struct ipr_cmnd
*ipr_cmd
)
4717 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4718 unsigned long lock_flags
= 0;
4720 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
4722 if (ioa_cfg
->reset_cmd
== ipr_cmd
) {
4723 list_del(&ipr_cmd
->queue
);
4724 ipr_cmd
->done(ipr_cmd
);
4727 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
4731 * ipr_reset_start_timer - Start a timer for adapter reset job
4732 * @ipr_cmd: ipr command struct
4733 * @timeout: timeout value
4735 * Description: This function is used in adapter reset processing
4736 * for timing events. If the reset_cmd pointer in the IOA
4737 * config struct is not this adapter's we are doing nested
4738 * resets and fail_all_ops will take care of freeing the
4744 static void ipr_reset_start_timer(struct ipr_cmnd
*ipr_cmd
,
4745 unsigned long timeout
)
4747 list_add_tail(&ipr_cmd
->queue
, &ipr_cmd
->ioa_cfg
->pending_q
);
4748 ipr_cmd
->done
= ipr_reset_ioa_job
;
4750 ipr_cmd
->timer
.data
= (unsigned long) ipr_cmd
;
4751 ipr_cmd
->timer
.expires
= jiffies
+ timeout
;
4752 ipr_cmd
->timer
.function
= (void (*)(unsigned long))ipr_reset_timer_done
;
4753 add_timer(&ipr_cmd
->timer
);
4757 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4758 * @ioa_cfg: ioa cfg struct
4763 static void ipr_init_ioa_mem(struct ipr_ioa_cfg
*ioa_cfg
)
4765 memset(ioa_cfg
->host_rrq
, 0, sizeof(u32
) * IPR_NUM_CMD_BLKS
);
4767 /* Initialize Host RRQ pointers */
4768 ioa_cfg
->hrrq_start
= ioa_cfg
->host_rrq
;
4769 ioa_cfg
->hrrq_end
= &ioa_cfg
->host_rrq
[IPR_NUM_CMD_BLKS
- 1];
4770 ioa_cfg
->hrrq_curr
= ioa_cfg
->hrrq_start
;
4771 ioa_cfg
->toggle_bit
= 1;
4773 /* Zero out config table */
4774 memset(ioa_cfg
->cfg_table
, 0, sizeof(struct ipr_config_table
));
4778 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4779 * @ipr_cmd: ipr command struct
4781 * This function reinitializes some control blocks and
4782 * enables destructive diagnostics on the adapter.
4787 static int ipr_reset_enable_ioa(struct ipr_cmnd
*ipr_cmd
)
4789 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4790 volatile u32 int_reg
;
4793 ipr_cmd
->job_step
= ipr_ioafp_indentify_hrrq
;
4794 ipr_init_ioa_mem(ioa_cfg
);
4796 ioa_cfg
->allow_interrupts
= 1;
4797 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
);
4799 if (int_reg
& IPR_PCII_IOA_TRANS_TO_OPER
) {
4800 writel((IPR_PCII_ERROR_INTERRUPTS
| IPR_PCII_HRRQ_UPDATED
),
4801 ioa_cfg
->regs
.clr_interrupt_mask_reg
);
4802 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_mask_reg
);
4803 return IPR_RC_JOB_CONTINUE
;
4806 /* Enable destructive diagnostics on IOA */
4807 writel(IPR_DOORBELL
, ioa_cfg
->regs
.set_uproc_interrupt_reg
);
4809 writel(IPR_PCII_OPER_INTERRUPTS
, ioa_cfg
->regs
.clr_interrupt_mask_reg
);
4810 int_reg
= readl(ioa_cfg
->regs
.sense_interrupt_mask_reg
);
4812 dev_info(&ioa_cfg
->pdev
->dev
, "Initializing IOA.\n");
4814 ipr_cmd
->timer
.data
= (unsigned long) ipr_cmd
;
4815 ipr_cmd
->timer
.expires
= jiffies
+ (ipr_transop_timeout
* HZ
);
4816 ipr_cmd
->timer
.function
= (void (*)(unsigned long))ipr_oper_timeout
;
4817 ipr_cmd
->done
= ipr_reset_ioa_job
;
4818 add_timer(&ipr_cmd
->timer
);
4819 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->pending_q
);
4822 return IPR_RC_JOB_RETURN
;
4826 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4827 * @ipr_cmd: ipr command struct
4829 * This function is invoked when an adapter dump has run out
4830 * of processing time.
4833 * IPR_RC_JOB_CONTINUE
4835 static int ipr_reset_wait_for_dump(struct ipr_cmnd
*ipr_cmd
)
4837 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4839 if (ioa_cfg
->sdt_state
== GET_DUMP
)
4840 ioa_cfg
->sdt_state
= ABORT_DUMP
;
4842 ipr_cmd
->job_step
= ipr_reset_alert
;
4844 return IPR_RC_JOB_CONTINUE
;
4848 * ipr_unit_check_no_data - Log a unit check/no data error log
4849 * @ioa_cfg: ioa config struct
4851 * Logs an error indicating the adapter unit checked, but for some
4852 * reason, we were unable to fetch the unit check buffer.
4857 static void ipr_unit_check_no_data(struct ipr_ioa_cfg
*ioa_cfg
)
4859 ioa_cfg
->errors_logged
++;
4860 dev_err(&ioa_cfg
->pdev
->dev
, "IOA unit check with no data\n");
4864 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4865 * @ioa_cfg: ioa config struct
4867 * Fetches the unit check buffer from the adapter by clocking the data
4868 * through the mailbox register.
4873 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg
*ioa_cfg
)
4875 unsigned long mailbox
;
4876 struct ipr_hostrcb
*hostrcb
;
4877 struct ipr_uc_sdt sdt
;
4880 mailbox
= readl(ioa_cfg
->ioa_mailbox
);
4882 if (!ipr_sdt_is_fmt2(mailbox
)) {
4883 ipr_unit_check_no_data(ioa_cfg
);
4887 memset(&sdt
, 0, sizeof(struct ipr_uc_sdt
));
4888 rc
= ipr_get_ldump_data_section(ioa_cfg
, mailbox
, (__be32
*) &sdt
,
4889 (sizeof(struct ipr_uc_sdt
)) / sizeof(__be32
));
4891 if (rc
|| (be32_to_cpu(sdt
.hdr
.state
) != IPR_FMT2_SDT_READY_TO_USE
) ||
4892 !(sdt
.entry
[0].flags
& IPR_SDT_VALID_ENTRY
)) {
4893 ipr_unit_check_no_data(ioa_cfg
);
4897 /* Find length of the first sdt entry (UC buffer) */
4898 length
= (be32_to_cpu(sdt
.entry
[0].end_offset
) -
4899 be32_to_cpu(sdt
.entry
[0].bar_str_offset
)) & IPR_FMT2_MBX_ADDR_MASK
;
4901 hostrcb
= list_entry(ioa_cfg
->hostrcb_free_q
.next
,
4902 struct ipr_hostrcb
, queue
);
4903 list_del(&hostrcb
->queue
);
4904 memset(&hostrcb
->hcam
, 0, sizeof(hostrcb
->hcam
));
4906 rc
= ipr_get_ldump_data_section(ioa_cfg
,
4907 be32_to_cpu(sdt
.entry
[0].bar_str_offset
),
4908 (__be32
*)&hostrcb
->hcam
,
4909 min(length
, (int)sizeof(hostrcb
->hcam
)) / sizeof(__be32
));
4912 ipr_handle_log_data(ioa_cfg
, hostrcb
);
4914 ipr_unit_check_no_data(ioa_cfg
);
4916 list_add_tail(&hostrcb
->queue
, &ioa_cfg
->hostrcb_free_q
);
4920 * ipr_reset_restore_cfg_space - Restore PCI config space.
4921 * @ipr_cmd: ipr command struct
4923 * Description: This function restores the saved PCI config space of
4924 * the adapter, fails all outstanding ops back to the callers, and
4925 * fetches the dump/unit check if applicable to this reset.
4928 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4930 static int ipr_reset_restore_cfg_space(struct ipr_cmnd
*ipr_cmd
)
4932 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4936 rc
= pci_restore_state(ioa_cfg
->pdev
);
4938 if (rc
!= PCIBIOS_SUCCESSFUL
) {
4939 ipr_cmd
->ioasa
.ioasc
= cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR
);
4940 return IPR_RC_JOB_CONTINUE
;
4943 if (ipr_set_pcix_cmd_reg(ioa_cfg
)) {
4944 ipr_cmd
->ioasa
.ioasc
= cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR
);
4945 return IPR_RC_JOB_CONTINUE
;
4948 ipr_fail_all_ops(ioa_cfg
);
4950 if (ioa_cfg
->ioa_unit_checked
) {
4951 ioa_cfg
->ioa_unit_checked
= 0;
4952 ipr_get_unit_check_buffer(ioa_cfg
);
4953 ipr_cmd
->job_step
= ipr_reset_alert
;
4954 ipr_reset_start_timer(ipr_cmd
, 0);
4955 return IPR_RC_JOB_RETURN
;
4958 if (ioa_cfg
->in_ioa_bringdown
) {
4959 ipr_cmd
->job_step
= ipr_ioa_bringdown_done
;
4961 ipr_cmd
->job_step
= ipr_reset_enable_ioa
;
4963 if (GET_DUMP
== ioa_cfg
->sdt_state
) {
4964 ipr_reset_start_timer(ipr_cmd
, IPR_DUMP_TIMEOUT
);
4965 ipr_cmd
->job_step
= ipr_reset_wait_for_dump
;
4966 schedule_work(&ioa_cfg
->work_q
);
4967 return IPR_RC_JOB_RETURN
;
4972 return IPR_RC_JOB_CONTINUE
;
4976 * ipr_reset_start_bist - Run BIST on the adapter.
4977 * @ipr_cmd: ipr command struct
4979 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4982 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4984 static int ipr_reset_start_bist(struct ipr_cmnd
*ipr_cmd
)
4986 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
4990 rc
= pci_write_config_byte(ioa_cfg
->pdev
, PCI_BIST
, PCI_BIST_START
);
4992 if (rc
!= PCIBIOS_SUCCESSFUL
) {
4993 ipr_cmd
->ioasa
.ioasc
= cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR
);
4994 rc
= IPR_RC_JOB_CONTINUE
;
4996 ipr_cmd
->job_step
= ipr_reset_restore_cfg_space
;
4997 ipr_reset_start_timer(ipr_cmd
, IPR_WAIT_FOR_BIST_TIMEOUT
);
4998 rc
= IPR_RC_JOB_RETURN
;
5006 * ipr_reset_allowed - Query whether or not IOA can be reset
5007 * @ioa_cfg: ioa config struct
5010 * 0 if reset not allowed / non-zero if reset is allowed
5012 static int ipr_reset_allowed(struct ipr_ioa_cfg
*ioa_cfg
)
5014 volatile u32 temp_reg
;
5016 temp_reg
= readl(ioa_cfg
->regs
.sense_interrupt_reg
);
5017 return ((temp_reg
& IPR_PCII_CRITICAL_OPERATION
) == 0);
5021 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5022 * @ipr_cmd: ipr command struct
5024 * Description: This function waits for adapter permission to run BIST,
5025 * then runs BIST. If the adapter does not give permission after a
5026 * reasonable time, we will reset the adapter anyway. The impact of
5027 * resetting the adapter without warning the adapter is the risk of
5028 * losing the persistent error log on the adapter. If the adapter is
5029 * reset while it is writing to the flash on the adapter, the flash
5030 * segment will have bad ECC and be zeroed.
5033 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5035 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd
*ipr_cmd
)
5037 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5038 int rc
= IPR_RC_JOB_RETURN
;
5040 if (!ipr_reset_allowed(ioa_cfg
) && ipr_cmd
->u
.time_left
) {
5041 ipr_cmd
->u
.time_left
-= IPR_CHECK_FOR_RESET_TIMEOUT
;
5042 ipr_reset_start_timer(ipr_cmd
, IPR_CHECK_FOR_RESET_TIMEOUT
);
5044 ipr_cmd
->job_step
= ipr_reset_start_bist
;
5045 rc
= IPR_RC_JOB_CONTINUE
;
5052 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5053 * @ipr_cmd: ipr command struct
5055 * Description: This function alerts the adapter that it will be reset.
5056 * If memory space is not currently enabled, proceed directly
5057 * to running BIST on the adapter. The timer must always be started
5058 * so we guarantee we do not run BIST from ipr_isr.
5063 static int ipr_reset_alert(struct ipr_cmnd
*ipr_cmd
)
5065 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5070 rc
= pci_read_config_word(ioa_cfg
->pdev
, PCI_COMMAND
, &cmd_reg
);
5072 if ((rc
== PCIBIOS_SUCCESSFUL
) && (cmd_reg
& PCI_COMMAND_MEMORY
)) {
5073 ipr_mask_and_clear_interrupts(ioa_cfg
, ~0);
5074 writel(IPR_UPROCI_RESET_ALERT
, ioa_cfg
->regs
.set_uproc_interrupt_reg
);
5075 ipr_cmd
->job_step
= ipr_reset_wait_to_start_bist
;
5077 ipr_cmd
->job_step
= ipr_reset_start_bist
;
5080 ipr_cmd
->u
.time_left
= IPR_WAIT_FOR_RESET_TIMEOUT
;
5081 ipr_reset_start_timer(ipr_cmd
, IPR_CHECK_FOR_RESET_TIMEOUT
);
5084 return IPR_RC_JOB_RETURN
;
5088 * ipr_reset_ucode_download_done - Microcode download completion
5089 * @ipr_cmd: ipr command struct
5091 * Description: This function unmaps the microcode download buffer.
5094 * IPR_RC_JOB_CONTINUE
5096 static int ipr_reset_ucode_download_done(struct ipr_cmnd
*ipr_cmd
)
5098 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5099 struct ipr_sglist
*sglist
= ioa_cfg
->ucode_sglist
;
5101 pci_unmap_sg(ioa_cfg
->pdev
, sglist
->scatterlist
,
5102 sglist
->num_sg
, DMA_TO_DEVICE
);
5104 ipr_cmd
->job_step
= ipr_reset_alert
;
5105 return IPR_RC_JOB_CONTINUE
;
5109 * ipr_reset_ucode_download - Download microcode to the adapter
5110 * @ipr_cmd: ipr command struct
5112 * Description: This function checks to see if it there is microcode
5113 * to download to the adapter. If there is, a download is performed.
5116 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5118 static int ipr_reset_ucode_download(struct ipr_cmnd
*ipr_cmd
)
5120 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5121 struct ipr_sglist
*sglist
= ioa_cfg
->ucode_sglist
;
5124 ipr_cmd
->job_step
= ipr_reset_alert
;
5127 return IPR_RC_JOB_CONTINUE
;
5129 ipr_cmd
->ioarcb
.res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
5130 ipr_cmd
->ioarcb
.cmd_pkt
.request_type
= IPR_RQTYPE_SCSICDB
;
5131 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[0] = WRITE_BUFFER
;
5132 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE
;
5133 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[6] = (sglist
->buffer_len
& 0xff0000) >> 16;
5134 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[7] = (sglist
->buffer_len
& 0x00ff00) >> 8;
5135 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[8] = sglist
->buffer_len
& 0x0000ff;
5137 if (ipr_map_ucode_buffer(ipr_cmd
, sglist
, sglist
->buffer_len
)) {
5138 dev_err(&ioa_cfg
->pdev
->dev
,
5139 "Failed to map microcode download buffer\n");
5140 return IPR_RC_JOB_CONTINUE
;
5143 ipr_cmd
->job_step
= ipr_reset_ucode_download_done
;
5145 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
,
5146 IPR_WRITE_BUFFER_TIMEOUT
);
5149 return IPR_RC_JOB_RETURN
;
5153 * ipr_reset_shutdown_ioa - Shutdown the adapter
5154 * @ipr_cmd: ipr command struct
5156 * Description: This function issues an adapter shutdown of the
5157 * specified type to the specified adapter as part of the
5158 * adapter reset job.
5161 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5163 static int ipr_reset_shutdown_ioa(struct ipr_cmnd
*ipr_cmd
)
5165 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5166 enum ipr_shutdown_type shutdown_type
= ipr_cmd
->u
.shutdown_type
;
5167 unsigned long timeout
;
5168 int rc
= IPR_RC_JOB_CONTINUE
;
5171 if (shutdown_type
!= IPR_SHUTDOWN_NONE
&& !ioa_cfg
->ioa_is_dead
) {
5172 ipr_cmd
->ioarcb
.res_handle
= cpu_to_be32(IPR_IOA_RES_HANDLE
);
5173 ipr_cmd
->ioarcb
.cmd_pkt
.request_type
= IPR_RQTYPE_IOACMD
;
5174 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[0] = IPR_IOA_SHUTDOWN
;
5175 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[1] = shutdown_type
;
5177 if (shutdown_type
== IPR_SHUTDOWN_ABBREV
)
5178 timeout
= IPR_ABBREV_SHUTDOWN_TIMEOUT
;
5179 else if (shutdown_type
== IPR_SHUTDOWN_PREPARE_FOR_NORMAL
)
5180 timeout
= IPR_INTERNAL_TIMEOUT
;
5182 timeout
= IPR_SHUTDOWN_TIMEOUT
;
5184 ipr_do_req(ipr_cmd
, ipr_reset_ioa_job
, ipr_timeout
, timeout
);
5186 rc
= IPR_RC_JOB_RETURN
;
5187 ipr_cmd
->job_step
= ipr_reset_ucode_download
;
5189 ipr_cmd
->job_step
= ipr_reset_alert
;
5196 * ipr_reset_ioa_job - Adapter reset job
5197 * @ipr_cmd: ipr command struct
5199 * Description: This function is the job router for the adapter reset job.
5204 static void ipr_reset_ioa_job(struct ipr_cmnd
*ipr_cmd
)
5207 unsigned long scratch
= ipr_cmd
->u
.scratch
;
5208 struct ipr_ioa_cfg
*ioa_cfg
= ipr_cmd
->ioa_cfg
;
5211 ioasc
= be32_to_cpu(ipr_cmd
->ioasa
.ioasc
);
5213 if (ioa_cfg
->reset_cmd
!= ipr_cmd
) {
5215 * We are doing nested adapter resets and this is
5216 * not the current reset job.
5218 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
5222 if (IPR_IOASC_SENSE_KEY(ioasc
)) {
5223 dev_err(&ioa_cfg
->pdev
->dev
,
5224 "0x%02X failed with IOASC: 0x%08X\n",
5225 ipr_cmd
->ioarcb
.cmd_pkt
.cdb
[0], ioasc
);
5227 ipr_initiate_ioa_reset(ioa_cfg
, IPR_SHUTDOWN_NONE
);
5228 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
5232 ipr_reinit_ipr_cmnd(ipr_cmd
);
5233 ipr_cmd
->u
.scratch
= scratch
;
5234 rc
= ipr_cmd
->job_step(ipr_cmd
);
5235 } while(rc
== IPR_RC_JOB_CONTINUE
);
5239 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5240 * @ioa_cfg: ioa config struct
5241 * @job_step: first job step of reset job
5242 * @shutdown_type: shutdown type
5244 * Description: This function will initiate the reset of the given adapter
5245 * starting at the selected job step.
5246 * If the caller needs to wait on the completion of the reset,
5247 * the caller must sleep on the reset_wait_q.
5252 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg
*ioa_cfg
,
5253 int (*job_step
) (struct ipr_cmnd
*),
5254 enum ipr_shutdown_type shutdown_type
)
5256 struct ipr_cmnd
*ipr_cmd
;
5258 ioa_cfg
->in_reset_reload
= 1;
5259 ioa_cfg
->allow_cmds
= 0;
5260 scsi_block_requests(ioa_cfg
->host
);
5262 ipr_cmd
= ipr_get_free_ipr_cmnd(ioa_cfg
);
5263 ioa_cfg
->reset_cmd
= ipr_cmd
;
5264 ipr_cmd
->job_step
= job_step
;
5265 ipr_cmd
->u
.shutdown_type
= shutdown_type
;
5267 ipr_reset_ioa_job(ipr_cmd
);
5271 * ipr_initiate_ioa_reset - Initiate an adapter reset
5272 * @ioa_cfg: ioa config struct
5273 * @shutdown_type: shutdown type
5275 * Description: This function will initiate the reset of the given adapter.
5276 * If the caller needs to wait on the completion of the reset,
5277 * the caller must sleep on the reset_wait_q.
5282 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg
*ioa_cfg
,
5283 enum ipr_shutdown_type shutdown_type
)
5285 if (ioa_cfg
->ioa_is_dead
)
5288 if (ioa_cfg
->in_reset_reload
&& ioa_cfg
->sdt_state
== GET_DUMP
)
5289 ioa_cfg
->sdt_state
= ABORT_DUMP
;
5291 if (ioa_cfg
->reset_retries
++ >= IPR_NUM_RESET_RELOAD_RETRIES
) {
5292 dev_err(&ioa_cfg
->pdev
->dev
,
5293 "IOA taken offline - error recovery failed\n");
5295 ioa_cfg
->reset_retries
= 0;
5296 ioa_cfg
->ioa_is_dead
= 1;
5298 if (ioa_cfg
->in_ioa_bringdown
) {
5299 ioa_cfg
->reset_cmd
= NULL
;
5300 ioa_cfg
->in_reset_reload
= 0;
5301 ipr_fail_all_ops(ioa_cfg
);
5302 wake_up_all(&ioa_cfg
->reset_wait_q
);
5304 spin_unlock_irq(ioa_cfg
->host
->host_lock
);
5305 scsi_unblock_requests(ioa_cfg
->host
);
5306 spin_lock_irq(ioa_cfg
->host
->host_lock
);
5309 ioa_cfg
->in_ioa_bringdown
= 1;
5310 shutdown_type
= IPR_SHUTDOWN_NONE
;
5314 _ipr_initiate_ioa_reset(ioa_cfg
, ipr_reset_shutdown_ioa
,
5319 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5320 * @ioa_cfg: ioa cfg struct
5322 * Description: This is the second phase of adapter intialization
5323 * This function takes care of initilizing the adapter to the point
5324 * where it can accept new commands.
5327 * 0 on sucess / -EIO on failure
5329 static int __devinit
ipr_probe_ioa_part2(struct ipr_ioa_cfg
*ioa_cfg
)
5332 unsigned long host_lock_flags
= 0;
5335 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5336 dev_dbg(&ioa_cfg
->pdev
->dev
, "ioa_cfg adx: 0x%p\n", ioa_cfg
);
5337 _ipr_initiate_ioa_reset(ioa_cfg
, ipr_reset_enable_ioa
, IPR_SHUTDOWN_NONE
);
5339 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5340 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
5341 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5343 if (ioa_cfg
->ioa_is_dead
) {
5345 } else if (ipr_invalid_adapter(ioa_cfg
)) {
5349 dev_err(&ioa_cfg
->pdev
->dev
,
5350 "Adapter not supported in this hardware configuration.\n");
5353 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5360 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5361 * @ioa_cfg: ioa config struct
5366 static void ipr_free_cmd_blks(struct ipr_ioa_cfg
*ioa_cfg
)
5370 for (i
= 0; i
< IPR_NUM_CMD_BLKS
; i
++) {
5371 if (ioa_cfg
->ipr_cmnd_list
[i
])
5372 pci_pool_free(ioa_cfg
->ipr_cmd_pool
,
5373 ioa_cfg
->ipr_cmnd_list
[i
],
5374 ioa_cfg
->ipr_cmnd_list_dma
[i
]);
5376 ioa_cfg
->ipr_cmnd_list
[i
] = NULL
;
5379 if (ioa_cfg
->ipr_cmd_pool
)
5380 pci_pool_destroy (ioa_cfg
->ipr_cmd_pool
);
5382 ioa_cfg
->ipr_cmd_pool
= NULL
;
5386 * ipr_free_mem - Frees memory allocated for an adapter
5387 * @ioa_cfg: ioa cfg struct
5392 static void ipr_free_mem(struct ipr_ioa_cfg
*ioa_cfg
)
5396 kfree(ioa_cfg
->res_entries
);
5397 pci_free_consistent(ioa_cfg
->pdev
, sizeof(struct ipr_misc_cbs
),
5398 ioa_cfg
->vpd_cbs
, ioa_cfg
->vpd_cbs_dma
);
5399 ipr_free_cmd_blks(ioa_cfg
);
5400 pci_free_consistent(ioa_cfg
->pdev
, sizeof(u32
) * IPR_NUM_CMD_BLKS
,
5401 ioa_cfg
->host_rrq
, ioa_cfg
->host_rrq_dma
);
5402 pci_free_consistent(ioa_cfg
->pdev
, sizeof(struct ipr_config_table
),
5404 ioa_cfg
->cfg_table_dma
);
5406 for (i
= 0; i
< IPR_NUM_HCAMS
; i
++) {
5407 pci_free_consistent(ioa_cfg
->pdev
,
5408 sizeof(struct ipr_hostrcb
),
5409 ioa_cfg
->hostrcb
[i
],
5410 ioa_cfg
->hostrcb_dma
[i
]);
5413 ipr_free_dump(ioa_cfg
);
5414 kfree(ioa_cfg
->saved_mode_pages
);
5415 kfree(ioa_cfg
->trace
);
5419 * ipr_free_all_resources - Free all allocated resources for an adapter.
5420 * @ipr_cmd: ipr command struct
5422 * This function frees all allocated resources for the
5423 * specified adapter.
5428 static void ipr_free_all_resources(struct ipr_ioa_cfg
*ioa_cfg
)
5430 struct pci_dev
*pdev
= ioa_cfg
->pdev
;
5433 free_irq(pdev
->irq
, ioa_cfg
);
5434 iounmap(ioa_cfg
->hdw_dma_regs
);
5435 pci_release_regions(pdev
);
5436 ipr_free_mem(ioa_cfg
);
5437 scsi_host_put(ioa_cfg
->host
);
5438 pci_disable_device(pdev
);
5443 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5444 * @ioa_cfg: ioa config struct
5447 * 0 on success / -ENOMEM on allocation failure
5449 static int __devinit
ipr_alloc_cmd_blks(struct ipr_ioa_cfg
*ioa_cfg
)
5451 struct ipr_cmnd
*ipr_cmd
;
5452 struct ipr_ioarcb
*ioarcb
;
5453 dma_addr_t dma_addr
;
5456 ioa_cfg
->ipr_cmd_pool
= pci_pool_create (IPR_NAME
, ioa_cfg
->pdev
,
5457 sizeof(struct ipr_cmnd
), 8, 0);
5459 if (!ioa_cfg
->ipr_cmd_pool
)
5462 for (i
= 0; i
< IPR_NUM_CMD_BLKS
; i
++) {
5463 ipr_cmd
= pci_pool_alloc (ioa_cfg
->ipr_cmd_pool
, SLAB_KERNEL
, &dma_addr
);
5466 ipr_free_cmd_blks(ioa_cfg
);
5470 memset(ipr_cmd
, 0, sizeof(*ipr_cmd
));
5471 ioa_cfg
->ipr_cmnd_list
[i
] = ipr_cmd
;
5472 ioa_cfg
->ipr_cmnd_list_dma
[i
] = dma_addr
;
5474 ioarcb
= &ipr_cmd
->ioarcb
;
5475 ioarcb
->ioarcb_host_pci_addr
= cpu_to_be32(dma_addr
);
5476 ioarcb
->host_response_handle
= cpu_to_be32(i
<< 2);
5477 ioarcb
->write_ioadl_addr
=
5478 cpu_to_be32(dma_addr
+ offsetof(struct ipr_cmnd
, ioadl
));
5479 ioarcb
->read_ioadl_addr
= ioarcb
->write_ioadl_addr
;
5480 ioarcb
->ioasa_host_pci_addr
=
5481 cpu_to_be32(dma_addr
+ offsetof(struct ipr_cmnd
, ioasa
));
5482 ioarcb
->ioasa_len
= cpu_to_be16(sizeof(struct ipr_ioasa
));
5483 ipr_cmd
->cmd_index
= i
;
5484 ipr_cmd
->ioa_cfg
= ioa_cfg
;
5485 ipr_cmd
->sense_buffer_dma
= dma_addr
+
5486 offsetof(struct ipr_cmnd
, sense_buffer
);
5488 list_add_tail(&ipr_cmd
->queue
, &ioa_cfg
->free_q
);
5495 * ipr_alloc_mem - Allocate memory for an adapter
5496 * @ioa_cfg: ioa config struct
5499 * 0 on success / non-zero for error
5501 static int __devinit
ipr_alloc_mem(struct ipr_ioa_cfg
*ioa_cfg
)
5503 struct pci_dev
*pdev
= ioa_cfg
->pdev
;
5504 int i
, rc
= -ENOMEM
;
5507 ioa_cfg
->res_entries
= kmalloc(sizeof(struct ipr_resource_entry
) *
5508 IPR_MAX_PHYSICAL_DEVS
, GFP_KERNEL
);
5510 if (!ioa_cfg
->res_entries
)
5513 memset(ioa_cfg
->res_entries
, 0,
5514 sizeof(struct ipr_resource_entry
) * IPR_MAX_PHYSICAL_DEVS
);
5516 for (i
= 0; i
< IPR_MAX_PHYSICAL_DEVS
; i
++)
5517 list_add_tail(&ioa_cfg
->res_entries
[i
].queue
, &ioa_cfg
->free_res_q
);
5519 ioa_cfg
->vpd_cbs
= pci_alloc_consistent(ioa_cfg
->pdev
,
5520 sizeof(struct ipr_misc_cbs
),
5521 &ioa_cfg
->vpd_cbs_dma
);
5523 if (!ioa_cfg
->vpd_cbs
)
5524 goto out_free_res_entries
;
5526 if (ipr_alloc_cmd_blks(ioa_cfg
))
5527 goto out_free_vpd_cbs
;
5529 ioa_cfg
->host_rrq
= pci_alloc_consistent(ioa_cfg
->pdev
,
5530 sizeof(u32
) * IPR_NUM_CMD_BLKS
,
5531 &ioa_cfg
->host_rrq_dma
);
5533 if (!ioa_cfg
->host_rrq
)
5534 goto out_ipr_free_cmd_blocks
;
5536 ioa_cfg
->cfg_table
= pci_alloc_consistent(ioa_cfg
->pdev
,
5537 sizeof(struct ipr_config_table
),
5538 &ioa_cfg
->cfg_table_dma
);
5540 if (!ioa_cfg
->cfg_table
)
5541 goto out_free_host_rrq
;
5543 for (i
= 0; i
< IPR_NUM_HCAMS
; i
++) {
5544 ioa_cfg
->hostrcb
[i
] = pci_alloc_consistent(ioa_cfg
->pdev
,
5545 sizeof(struct ipr_hostrcb
),
5546 &ioa_cfg
->hostrcb_dma
[i
]);
5548 if (!ioa_cfg
->hostrcb
[i
])
5549 goto out_free_hostrcb_dma
;
5551 ioa_cfg
->hostrcb
[i
]->hostrcb_dma
=
5552 ioa_cfg
->hostrcb_dma
[i
] + offsetof(struct ipr_hostrcb
, hcam
);
5553 list_add_tail(&ioa_cfg
->hostrcb
[i
]->queue
, &ioa_cfg
->hostrcb_free_q
);
5556 ioa_cfg
->trace
= kmalloc(sizeof(struct ipr_trace_entry
) *
5557 IPR_NUM_TRACE_ENTRIES
, GFP_KERNEL
);
5559 if (!ioa_cfg
->trace
)
5560 goto out_free_hostrcb_dma
;
5562 memset(ioa_cfg
->trace
, 0,
5563 sizeof(struct ipr_trace_entry
) * IPR_NUM_TRACE_ENTRIES
);
5570 out_free_hostrcb_dma
:
5572 pci_free_consistent(pdev
, sizeof(struct ipr_hostrcb
),
5573 ioa_cfg
->hostrcb
[i
],
5574 ioa_cfg
->hostrcb_dma
[i
]);
5576 pci_free_consistent(pdev
, sizeof(struct ipr_config_table
),
5577 ioa_cfg
->cfg_table
, ioa_cfg
->cfg_table_dma
);
5579 pci_free_consistent(pdev
, sizeof(u32
) * IPR_NUM_CMD_BLKS
,
5580 ioa_cfg
->host_rrq
, ioa_cfg
->host_rrq_dma
);
5581 out_ipr_free_cmd_blocks
:
5582 ipr_free_cmd_blks(ioa_cfg
);
5584 pci_free_consistent(pdev
, sizeof(struct ipr_misc_cbs
),
5585 ioa_cfg
->vpd_cbs
, ioa_cfg
->vpd_cbs_dma
);
5586 out_free_res_entries
:
5587 kfree(ioa_cfg
->res_entries
);
5592 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5593 * @ioa_cfg: ioa config struct
5598 static void __devinit
ipr_initialize_bus_attr(struct ipr_ioa_cfg
*ioa_cfg
)
5602 for (i
= 0; i
< IPR_MAX_NUM_BUSES
; i
++) {
5603 ioa_cfg
->bus_attr
[i
].bus
= i
;
5604 ioa_cfg
->bus_attr
[i
].qas_enabled
= 0;
5605 ioa_cfg
->bus_attr
[i
].bus_width
= IPR_DEFAULT_BUS_WIDTH
;
5606 if (ipr_max_speed
< ARRAY_SIZE(ipr_max_bus_speeds
))
5607 ioa_cfg
->bus_attr
[i
].max_xfer_rate
= ipr_max_bus_speeds
[ipr_max_speed
];
5609 ioa_cfg
->bus_attr
[i
].max_xfer_rate
= IPR_U160_SCSI_RATE
;
5614 * ipr_init_ioa_cfg - Initialize IOA config struct
5615 * @ioa_cfg: ioa config struct
5616 * @host: scsi host struct
5617 * @pdev: PCI dev struct
5622 static void __devinit
ipr_init_ioa_cfg(struct ipr_ioa_cfg
*ioa_cfg
,
5623 struct Scsi_Host
*host
, struct pci_dev
*pdev
)
5625 const struct ipr_interrupt_offsets
*p
;
5626 struct ipr_interrupts
*t
;
5629 ioa_cfg
->host
= host
;
5630 ioa_cfg
->pdev
= pdev
;
5631 ioa_cfg
->log_level
= ipr_log_level
;
5632 sprintf(ioa_cfg
->eye_catcher
, IPR_EYECATCHER
);
5633 sprintf(ioa_cfg
->trace_start
, IPR_TRACE_START_LABEL
);
5634 sprintf(ioa_cfg
->ipr_free_label
, IPR_FREEQ_LABEL
);
5635 sprintf(ioa_cfg
->ipr_pending_label
, IPR_PENDQ_LABEL
);
5636 sprintf(ioa_cfg
->cfg_table_start
, IPR_CFG_TBL_START
);
5637 sprintf(ioa_cfg
->resource_table_label
, IPR_RES_TABLE_LABEL
);
5638 sprintf(ioa_cfg
->ipr_hcam_label
, IPR_HCAM_LABEL
);
5639 sprintf(ioa_cfg
->ipr_cmd_label
, IPR_CMD_LABEL
);
5641 INIT_LIST_HEAD(&ioa_cfg
->free_q
);
5642 INIT_LIST_HEAD(&ioa_cfg
->pending_q
);
5643 INIT_LIST_HEAD(&ioa_cfg
->hostrcb_free_q
);
5644 INIT_LIST_HEAD(&ioa_cfg
->hostrcb_pending_q
);
5645 INIT_LIST_HEAD(&ioa_cfg
->free_res_q
);
5646 INIT_LIST_HEAD(&ioa_cfg
->used_res_q
);
5647 INIT_WORK(&ioa_cfg
->work_q
, ipr_worker_thread
, ioa_cfg
);
5648 init_waitqueue_head(&ioa_cfg
->reset_wait_q
);
5649 ioa_cfg
->sdt_state
= INACTIVE
;
5651 ipr_initialize_bus_attr(ioa_cfg
);
5653 host
->max_id
= IPR_MAX_NUM_TARGETS_PER_BUS
;
5654 host
->max_lun
= IPR_MAX_NUM_LUNS_PER_TARGET
;
5655 host
->max_channel
= IPR_MAX_BUS_TO_SCAN
;
5656 host
->unique_id
= host
->host_no
;
5657 host
->max_cmd_len
= IPR_MAX_CDB_LEN
;
5658 pci_set_drvdata(pdev
, ioa_cfg
);
5660 p
= &ioa_cfg
->chip_cfg
->regs
;
5662 base
= ioa_cfg
->hdw_dma_regs
;
5664 t
->set_interrupt_mask_reg
= base
+ p
->set_interrupt_mask_reg
;
5665 t
->clr_interrupt_mask_reg
= base
+ p
->clr_interrupt_mask_reg
;
5666 t
->sense_interrupt_mask_reg
= base
+ p
->sense_interrupt_mask_reg
;
5667 t
->clr_interrupt_reg
= base
+ p
->clr_interrupt_reg
;
5668 t
->sense_interrupt_reg
= base
+ p
->sense_interrupt_reg
;
5669 t
->ioarrin_reg
= base
+ p
->ioarrin_reg
;
5670 t
->sense_uproc_interrupt_reg
= base
+ p
->sense_uproc_interrupt_reg
;
5671 t
->set_uproc_interrupt_reg
= base
+ p
->set_uproc_interrupt_reg
;
5672 t
->clr_uproc_interrupt_reg
= base
+ p
->clr_uproc_interrupt_reg
;
5676 * ipr_get_chip_cfg - Find adapter chip configuration
5677 * @dev_id: PCI device id struct
5680 * ptr to chip config on success / NULL on failure
5682 static const struct ipr_chip_cfg_t
* __devinit
5683 ipr_get_chip_cfg(const struct pci_device_id
*dev_id
)
5687 if (dev_id
->driver_data
)
5688 return (const struct ipr_chip_cfg_t
*)dev_id
->driver_data
;
5690 for (i
= 0; i
< ARRAY_SIZE(ipr_chip
); i
++)
5691 if (ipr_chip
[i
].vendor
== dev_id
->vendor
&&
5692 ipr_chip
[i
].device
== dev_id
->device
)
5693 return ipr_chip
[i
].cfg
;
5698 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5699 * @pdev: PCI device struct
5700 * @dev_id: PCI device id struct
5703 * 0 on success / non-zero on failure
5705 static int __devinit
ipr_probe_ioa(struct pci_dev
*pdev
,
5706 const struct pci_device_id
*dev_id
)
5708 struct ipr_ioa_cfg
*ioa_cfg
;
5709 struct Scsi_Host
*host
;
5710 unsigned long ipr_regs_pci
;
5711 void __iomem
*ipr_regs
;
5712 u32 rc
= PCIBIOS_SUCCESSFUL
;
5716 if ((rc
= pci_enable_device(pdev
))) {
5717 dev_err(&pdev
->dev
, "Cannot enable adapter\n");
5721 dev_info(&pdev
->dev
, "Found IOA with IRQ: %d\n", pdev
->irq
);
5723 host
= scsi_host_alloc(&driver_template
, sizeof(*ioa_cfg
));
5726 dev_err(&pdev
->dev
, "call to scsi_host_alloc failed!\n");
5731 ioa_cfg
= (struct ipr_ioa_cfg
*)host
->hostdata
;
5732 memset(ioa_cfg
, 0, sizeof(struct ipr_ioa_cfg
));
5734 ioa_cfg
->chip_cfg
= ipr_get_chip_cfg(dev_id
);
5736 if (!ioa_cfg
->chip_cfg
) {
5737 dev_err(&pdev
->dev
, "Unknown adapter chipset 0x%04X 0x%04X\n",
5738 dev_id
->vendor
, dev_id
->device
);
5739 goto out_scsi_host_put
;
5742 ipr_regs_pci
= pci_resource_start(pdev
, 0);
5744 rc
= pci_request_regions(pdev
, IPR_NAME
);
5747 "Couldn't register memory range of registers\n");
5748 goto out_scsi_host_put
;
5751 ipr_regs
= ioremap(ipr_regs_pci
, pci_resource_len(pdev
, 0));
5755 "Couldn't map memory range of registers\n");
5757 goto out_release_regions
;
5760 ioa_cfg
->hdw_dma_regs
= ipr_regs
;
5761 ioa_cfg
->hdw_dma_regs_pci
= ipr_regs_pci
;
5762 ioa_cfg
->ioa_mailbox
= ioa_cfg
->chip_cfg
->mailbox
+ ipr_regs
;
5764 ipr_init_ioa_cfg(ioa_cfg
, host
, pdev
);
5766 pci_set_master(pdev
);
5768 rc
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
5770 dev_err(&pdev
->dev
, "Failed to set PCI DMA mask\n");
5774 rc
= pci_write_config_byte(pdev
, PCI_CACHE_LINE_SIZE
,
5775 ioa_cfg
->chip_cfg
->cache_line_size
);
5777 if (rc
!= PCIBIOS_SUCCESSFUL
) {
5778 dev_err(&pdev
->dev
, "Write of cache line size failed\n");
5783 /* Save away PCI config space for use following IOA reset */
5784 rc
= pci_save_state(pdev
);
5786 if (rc
!= PCIBIOS_SUCCESSFUL
) {
5787 dev_err(&pdev
->dev
, "Failed to save PCI config space\n");
5792 if ((rc
= ipr_save_pcix_cmd_reg(ioa_cfg
)))
5795 if ((rc
= ipr_set_pcix_cmd_reg(ioa_cfg
)))
5798 rc
= ipr_alloc_mem(ioa_cfg
);
5801 "Couldn't allocate enough memory for device driver!\n");
5805 ipr_mask_and_clear_interrupts(ioa_cfg
, ~IPR_PCII_IOA_TRANS_TO_OPER
);
5806 rc
= request_irq(pdev
->irq
, ipr_isr
, SA_SHIRQ
, IPR_NAME
, ioa_cfg
);
5809 dev_err(&pdev
->dev
, "Couldn't register IRQ %d! rc=%d\n",
5814 spin_lock(&ipr_driver_lock
);
5815 list_add_tail(&ioa_cfg
->queue
, &ipr_ioa_head
);
5816 spin_unlock(&ipr_driver_lock
);
5823 ipr_free_mem(ioa_cfg
);
5826 out_release_regions
:
5827 pci_release_regions(pdev
);
5829 scsi_host_put(host
);
5831 pci_disable_device(pdev
);
5836 * ipr_scan_vsets - Scans for VSET devices
5837 * @ioa_cfg: ioa config struct
5839 * Description: Since the VSET resources do not follow SAM in that we can have
5840 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5845 static void ipr_scan_vsets(struct ipr_ioa_cfg
*ioa_cfg
)
5849 for (target
= 0; target
< IPR_MAX_NUM_TARGETS_PER_BUS
; target
++)
5850 for (lun
= 0; lun
< IPR_MAX_NUM_VSET_LUNS_PER_TARGET
; lun
++ )
5851 scsi_add_device(ioa_cfg
->host
, IPR_VSET_BUS
, target
, lun
);
5855 * ipr_initiate_ioa_bringdown - Bring down an adapter
5856 * @ioa_cfg: ioa config struct
5857 * @shutdown_type: shutdown type
5859 * Description: This function will initiate bringing down the adapter.
5860 * This consists of issuing an IOA shutdown to the adapter
5861 * to flush the cache, and running BIST.
5862 * If the caller needs to wait on the completion of the reset,
5863 * the caller must sleep on the reset_wait_q.
5868 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg
*ioa_cfg
,
5869 enum ipr_shutdown_type shutdown_type
)
5872 if (ioa_cfg
->sdt_state
== WAIT_FOR_DUMP
)
5873 ioa_cfg
->sdt_state
= ABORT_DUMP
;
5874 ioa_cfg
->reset_retries
= 0;
5875 ioa_cfg
->in_ioa_bringdown
= 1;
5876 ipr_initiate_ioa_reset(ioa_cfg
, shutdown_type
);
5881 * __ipr_remove - Remove a single adapter
5882 * @pdev: pci device struct
5884 * Adapter hot plug remove entry point.
5889 static void __ipr_remove(struct pci_dev
*pdev
)
5891 unsigned long host_lock_flags
= 0;
5892 struct ipr_ioa_cfg
*ioa_cfg
= pci_get_drvdata(pdev
);
5895 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5896 ipr_initiate_ioa_bringdown(ioa_cfg
, IPR_SHUTDOWN_NORMAL
);
5898 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5899 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
5900 flush_scheduled_work();
5901 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5903 spin_lock(&ipr_driver_lock
);
5904 list_del(&ioa_cfg
->queue
);
5905 spin_unlock(&ipr_driver_lock
);
5907 if (ioa_cfg
->sdt_state
== ABORT_DUMP
)
5908 ioa_cfg
->sdt_state
= WAIT_FOR_DUMP
;
5909 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, host_lock_flags
);
5911 ipr_free_all_resources(ioa_cfg
);
5917 * ipr_remove - IOA hot plug remove entry point
5918 * @pdev: pci device struct
5920 * Adapter hot plug remove entry point.
5925 static void ipr_remove(struct pci_dev
*pdev
)
5927 struct ipr_ioa_cfg
*ioa_cfg
= pci_get_drvdata(pdev
);
5931 ipr_remove_trace_file(&ioa_cfg
->host
->shost_classdev
.kobj
,
5933 ipr_remove_dump_file(&ioa_cfg
->host
->shost_classdev
.kobj
,
5935 scsi_remove_host(ioa_cfg
->host
);
5943 * ipr_probe - Adapter hot plug add entry point
5946 * 0 on success / non-zero on failure
5948 static int __devinit
ipr_probe(struct pci_dev
*pdev
,
5949 const struct pci_device_id
*dev_id
)
5951 struct ipr_ioa_cfg
*ioa_cfg
;
5954 rc
= ipr_probe_ioa(pdev
, dev_id
);
5959 ioa_cfg
= pci_get_drvdata(pdev
);
5960 rc
= ipr_probe_ioa_part2(ioa_cfg
);
5967 rc
= scsi_add_host(ioa_cfg
->host
, &pdev
->dev
);
5974 rc
= ipr_create_trace_file(&ioa_cfg
->host
->shost_classdev
.kobj
,
5978 scsi_remove_host(ioa_cfg
->host
);
5983 rc
= ipr_create_dump_file(&ioa_cfg
->host
->shost_classdev
.kobj
,
5987 ipr_remove_trace_file(&ioa_cfg
->host
->shost_classdev
.kobj
,
5989 scsi_remove_host(ioa_cfg
->host
);
5994 scsi_scan_host(ioa_cfg
->host
);
5995 ipr_scan_vsets(ioa_cfg
);
5996 scsi_add_device(ioa_cfg
->host
, IPR_IOA_BUS
, IPR_IOA_TARGET
, IPR_IOA_LUN
);
5997 ioa_cfg
->allow_ml_add_del
= 1;
5998 schedule_work(&ioa_cfg
->work_q
);
6003 * ipr_shutdown - Shutdown handler.
6004 * @dev: device struct
6006 * This function is invoked upon system shutdown/reboot. It will issue
6007 * an adapter shutdown to the adapter to flush the write cache.
6012 static void ipr_shutdown(struct device
*dev
)
6014 struct ipr_ioa_cfg
*ioa_cfg
= pci_get_drvdata(to_pci_dev(dev
));
6015 unsigned long lock_flags
= 0;
6017 spin_lock_irqsave(ioa_cfg
->host
->host_lock
, lock_flags
);
6018 ipr_initiate_ioa_bringdown(ioa_cfg
, IPR_SHUTDOWN_NORMAL
);
6019 spin_unlock_irqrestore(ioa_cfg
->host
->host_lock
, lock_flags
);
6020 wait_event(ioa_cfg
->reset_wait_q
, !ioa_cfg
->in_reset_reload
);
6023 static struct pci_device_id ipr_pci_table
[] __devinitdata
= {
6024 { PCI_VENDOR_ID_MYLEX
, PCI_DEVICE_ID_IBM_GEMSTONE
,
6025 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_5702
,
6026 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6027 { PCI_VENDOR_ID_MYLEX
, PCI_DEVICE_ID_IBM_GEMSTONE
,
6028 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_5703
,
6029 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6030 { PCI_VENDOR_ID_MYLEX
, PCI_DEVICE_ID_IBM_GEMSTONE
,
6031 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_573D
,
6032 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6033 { PCI_VENDOR_ID_MYLEX
, PCI_DEVICE_ID_IBM_GEMSTONE
,
6034 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_573E
,
6035 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6036 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_CITRINE
,
6037 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_571B
,
6038 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6039 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_CITRINE
,
6040 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_572E
,
6041 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6042 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_CITRINE
,
6043 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_571A
,
6044 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[0] },
6045 { PCI_VENDOR_ID_IBM
, PCI_DEVICE_ID_IBM_SNIPE
,
6046 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_2780
,
6047 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[1] },
6048 { PCI_VENDOR_ID_ADAPTEC2
, PCI_DEVICE_ID_ADAPTEC2_SCAMP
,
6049 PCI_VENDOR_ID_IBM
, IPR_SUBS_DEV_ID_571E
,
6050 0, 0, (kernel_ulong_t
)&ipr_chip_cfg
[1] },
6053 MODULE_DEVICE_TABLE(pci
, ipr_pci_table
);
6055 static struct pci_driver ipr_driver
= {
6057 .id_table
= ipr_pci_table
,
6059 .remove
= ipr_remove
,
6061 .shutdown
= ipr_shutdown
,
6066 * ipr_init - Module entry point
6069 * 0 on success / negative value on failure
6071 static int __init
ipr_init(void)
6073 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6074 IPR_DRIVER_VERSION
, IPR_DRIVER_DATE
);
6076 return pci_module_init(&ipr_driver
);
6080 * ipr_exit - Module unload
6082 * Module unload entry point.
6087 static void __exit
ipr_exit(void)
6089 pci_unregister_driver(&ipr_driver
);
6092 module_init(ipr_init
);
6093 module_exit(ipr_exit
);