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 * @vpd: vendor/product id/sn struct
897 static void ipr_log_vpd(struct ipr_vpd *vpd)
899 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
900 + IPR_SERIAL_NUM_LEN];
902 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
903 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
905 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
906 ipr_err("Vendor/Product ID: %s\n", buffer);
908 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
909 buffer[IPR_SERIAL_NUM_LEN] = '\0';
910 ipr_err(" Serial Number: %s\n", buffer);
914 * ipr_log_cache_error - Log a cache error.
915 * @ioa_cfg: ioa config struct
916 * @hostrcb: hostrcb struct
921 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
922 struct ipr_hostrcb *hostrcb)
924 struct ipr_hostrcb_type_02_error *error =
925 &hostrcb->hcam.u.error.u.type_02_error;
927 ipr_err("-----Current Configuration-----\n");
928 ipr_err("Cache Directory Card Information:\n");
929 ipr_log_vpd(&error->ioa_vpd);
930 ipr_err("Adapter Card Information:\n");
931 ipr_log_vpd(&error->cfc_vpd);
933 ipr_err("-----Expected Configuration-----\n");
934 ipr_err("Cache Directory Card Information:\n");
935 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
936 ipr_err("Adapter Card Information:\n");
937 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
939 ipr_err("Additional IOA Data: %08X %08X %08X\n",
940 be32_to_cpu(error->ioa_data[0]),
941 be32_to_cpu(error->ioa_data[1]),
942 be32_to_cpu(error->ioa_data[2]));
946 * ipr_log_config_error - Log a configuration error.
947 * @ioa_cfg: ioa config struct
948 * @hostrcb: hostrcb struct
953 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
954 struct ipr_hostrcb *hostrcb)
956 int errors_logged, i;
957 struct ipr_hostrcb_device_data_entry *dev_entry;
958 struct ipr_hostrcb_type_03_error *error;
960 error = &hostrcb->hcam.u.error.u.type_03_error;
961 errors_logged = be32_to_cpu(error->errors_logged);
963 ipr_err("Device Errors Detected/Logged: %d/%d\n",
964 be32_to_cpu(error->errors_detected), errors_logged);
966 dev_entry = error->dev;
968 for (i = 0; i < errors_logged; i++, dev_entry++) {
971 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
972 ipr_log_vpd(&dev_entry->vpd);
974 ipr_err("-----New Device Information-----\n");
975 ipr_log_vpd(&dev_entry->new_vpd);
977 ipr_err("Cache Directory Card Information:\n");
978 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
980 ipr_err("Adapter Card Information:\n");
981 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
983 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
984 be32_to_cpu(dev_entry->ioa_data[0]),
985 be32_to_cpu(dev_entry->ioa_data[1]),
986 be32_to_cpu(dev_entry->ioa_data[2]),
987 be32_to_cpu(dev_entry->ioa_data[3]),
988 be32_to_cpu(dev_entry->ioa_data[4]));
993 * ipr_log_array_error - Log an array configuration error.
994 * @ioa_cfg: ioa config struct
995 * @hostrcb: hostrcb struct
1000 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1001 struct ipr_hostrcb *hostrcb)
1004 struct ipr_hostrcb_type_04_error *error;
1005 struct ipr_hostrcb_array_data_entry *array_entry;
1006 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1008 error = &hostrcb->hcam.u.error.u.type_04_error;
1012 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1013 error->protection_level,
1014 ioa_cfg->host->host_no,
1015 error->last_func_vset_res_addr.bus,
1016 error->last_func_vset_res_addr.target,
1017 error->last_func_vset_res_addr.lun);
1021 array_entry = error->array_member;
1023 for (i = 0; i < 18; i++) {
1024 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1027 if (be32_to_cpu(error->exposed_mode_adn) == i)
1028 ipr_err("Exposed Array Member %d:\n", i);
1030 ipr_err("Array Member %d:\n", i);
1032 ipr_log_vpd(&array_entry->vpd);
1034 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1035 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1036 "Expected Location");
1041 array_entry = error->array_member2;
1048 * ipr_log_generic_error - Log an adapter error.
1049 * @ioa_cfg: ioa config struct
1050 * @hostrcb: hostrcb struct
1055 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1056 struct ipr_hostrcb *hostrcb)
1059 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length);
1061 if (ioa_data_len == 0)
1064 for (i = 0; i < ioa_data_len / 4; i += 4) {
1065 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1066 be32_to_cpu(hostrcb->hcam.u.raw.data[i]),
1067 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]),
1068 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]),
1069 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3]));
1074 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1077 * This function will return the index of into the ipr_error_table
1078 * for the specified IOASC. If the IOASC is not in the table,
1079 * 0 will be returned, which points to the entry used for unknown errors.
1082 * index into the ipr_error_table
1084 static u32 ipr_get_error(u32 ioasc)
1088 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1089 if (ipr_error_table[i].ioasc == ioasc)
1096 * ipr_handle_log_data - Log an adapter error.
1097 * @ioa_cfg: ioa config struct
1098 * @hostrcb: hostrcb struct
1100 * This function logs an adapter error to the system.
1105 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1111 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1114 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1115 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1117 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1119 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1120 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1121 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1122 scsi_report_bus_reset(ioa_cfg->host,
1123 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1126 error_index = ipr_get_error(ioasc);
1128 if (!ipr_error_table[error_index].log_hcam)
1131 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1132 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1133 "%s\n", ipr_error_table[error_index].error);
1135 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1136 ipr_error_table[error_index].error);
1139 /* Set indication we have logged an error */
1140 ioa_cfg->errors_logged++;
1142 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1144 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1145 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1147 switch (hostrcb->hcam.overlay_id) {
1148 case IPR_HOST_RCB_OVERLAY_ID_2:
1149 ipr_log_cache_error(ioa_cfg, hostrcb);
1151 case IPR_HOST_RCB_OVERLAY_ID_3:
1152 ipr_log_config_error(ioa_cfg, hostrcb);
1154 case IPR_HOST_RCB_OVERLAY_ID_4:
1155 case IPR_HOST_RCB_OVERLAY_ID_6:
1156 ipr_log_array_error(ioa_cfg, hostrcb);
1158 case IPR_HOST_RCB_OVERLAY_ID_1:
1159 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1161 ipr_log_generic_error(ioa_cfg, hostrcb);
1167 * ipr_process_error - Op done function for an adapter error log.
1168 * @ipr_cmd: ipr command struct
1170 * This function is the op done function for an error log host
1171 * controlled async from the adapter. It will log the error and
1172 * send the HCAM back to the adapter.
1177 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1179 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1180 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1181 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1183 list_del(&hostrcb->queue);
1184 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1187 ipr_handle_log_data(ioa_cfg, hostrcb);
1188 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1189 dev_err(&ioa_cfg->pdev->dev,
1190 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1193 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1197 * ipr_timeout - An internally generated op has timed out.
1198 * @ipr_cmd: ipr command struct
1200 * This function blocks host requests and initiates an
1206 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1208 unsigned long lock_flags = 0;
1209 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1214 ioa_cfg->errors_logged++;
1215 dev_err(&ioa_cfg->pdev->dev,
1216 "Adapter being reset due to command timeout.\n");
1218 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1219 ioa_cfg->sdt_state = GET_DUMP;
1221 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1222 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1229 * ipr_oper_timeout - Adapter timed out transitioning to operational
1230 * @ipr_cmd: ipr command struct
1232 * This function blocks host requests and initiates an
1238 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1240 unsigned long lock_flags = 0;
1241 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1244 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1246 ioa_cfg->errors_logged++;
1247 dev_err(&ioa_cfg->pdev->dev,
1248 "Adapter timed out transitioning to operational.\n");
1250 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1251 ioa_cfg->sdt_state = GET_DUMP;
1253 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1255 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1256 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1264 * ipr_reset_reload - Reset/Reload the IOA
1265 * @ioa_cfg: ioa config struct
1266 * @shutdown_type: shutdown type
1268 * This function resets the adapter and re-initializes it.
1269 * This function assumes that all new host commands have been stopped.
1273 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1274 enum ipr_shutdown_type shutdown_type)
1276 if (!ioa_cfg->in_reset_reload)
1277 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1279 spin_unlock_irq(ioa_cfg->host->host_lock);
1280 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1281 spin_lock_irq(ioa_cfg->host->host_lock);
1283 /* If we got hit with a host reset while we were already resetting
1284 the adapter for some reason, and the reset failed. */
1285 if (ioa_cfg->ioa_is_dead) {
1294 * ipr_find_ses_entry - Find matching SES in SES table
1295 * @res: resource entry struct of SES
1298 * pointer to SES table entry / NULL on failure
1300 static const struct ipr_ses_table_entry *
1301 ipr_find_ses_entry(struct ipr_resource_entry *res)
1304 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1306 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1307 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1308 if (ste->compare_product_id_byte[j] == 'X') {
1309 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1317 if (matches == IPR_PROD_ID_LEN)
1325 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1326 * @ioa_cfg: ioa config struct
1328 * @bus_width: bus width
1331 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1332 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1333 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1334 * max 160MHz = max 320MB/sec).
1336 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1338 struct ipr_resource_entry *res;
1339 const struct ipr_ses_table_entry *ste;
1340 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1342 /* Loop through each config table entry in the config table buffer */
1343 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1344 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1347 if (bus != res->cfgte.res_addr.bus)
1350 if (!(ste = ipr_find_ses_entry(res)))
1353 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1356 return max_xfer_rate;
1360 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1361 * @ioa_cfg: ioa config struct
1362 * @max_delay: max delay in micro-seconds to wait
1364 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1367 * 0 on success / other on failure
1369 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1371 volatile u32 pcii_reg;
1374 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1375 while (delay < max_delay) {
1376 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1378 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1381 /* udelay cannot be used if delay is more than a few milliseconds */
1382 if ((delay / 1000) > MAX_UDELAY_MS)
1383 mdelay(delay / 1000);
1393 * ipr_get_ldump_data_section - Dump IOA memory
1394 * @ioa_cfg: ioa config struct
1395 * @start_addr: adapter address to dump
1396 * @dest: destination kernel buffer
1397 * @length_in_words: length to dump in 4 byte words
1400 * 0 on success / -EIO on failure
1402 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1404 __be32 *dest, u32 length_in_words)
1406 volatile u32 temp_pcii_reg;
1409 /* Write IOA interrupt reg starting LDUMP state */
1410 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1411 ioa_cfg->regs.set_uproc_interrupt_reg);
1413 /* Wait for IO debug acknowledge */
1414 if (ipr_wait_iodbg_ack(ioa_cfg,
1415 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1416 dev_err(&ioa_cfg->pdev->dev,
1417 "IOA dump long data transfer timeout\n");
1421 /* Signal LDUMP interlocked - clear IO debug ack */
1422 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1423 ioa_cfg->regs.clr_interrupt_reg);
1425 /* Write Mailbox with starting address */
1426 writel(start_addr, ioa_cfg->ioa_mailbox);
1428 /* Signal address valid - clear IOA Reset alert */
1429 writel(IPR_UPROCI_RESET_ALERT,
1430 ioa_cfg->regs.clr_uproc_interrupt_reg);
1432 for (i = 0; i < length_in_words; i++) {
1433 /* Wait for IO debug acknowledge */
1434 if (ipr_wait_iodbg_ack(ioa_cfg,
1435 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1436 dev_err(&ioa_cfg->pdev->dev,
1437 "IOA dump short data transfer timeout\n");
1441 /* Read data from mailbox and increment destination pointer */
1442 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1445 /* For all but the last word of data, signal data received */
1446 if (i < (length_in_words - 1)) {
1447 /* Signal dump data received - Clear IO debug Ack */
1448 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1449 ioa_cfg->regs.clr_interrupt_reg);
1453 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1454 writel(IPR_UPROCI_RESET_ALERT,
1455 ioa_cfg->regs.set_uproc_interrupt_reg);
1457 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1458 ioa_cfg->regs.clr_uproc_interrupt_reg);
1460 /* Signal dump data received - Clear IO debug Ack */
1461 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1462 ioa_cfg->regs.clr_interrupt_reg);
1464 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1465 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1467 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1469 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1479 #ifdef CONFIG_SCSI_IPR_DUMP
1481 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1482 * @ioa_cfg: ioa config struct
1483 * @pci_address: adapter address
1484 * @length: length of data to copy
1486 * Copy data from PCI adapter to kernel buffer.
1487 * Note: length MUST be a 4 byte multiple
1489 * 0 on success / other on failure
1491 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1492 unsigned long pci_address, u32 length)
1494 int bytes_copied = 0;
1495 int cur_len, rc, rem_len, rem_page_len;
1497 unsigned long lock_flags = 0;
1498 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1500 while (bytes_copied < length &&
1501 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1502 if (ioa_dump->page_offset >= PAGE_SIZE ||
1503 ioa_dump->page_offset == 0) {
1504 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1508 return bytes_copied;
1511 ioa_dump->page_offset = 0;
1512 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1513 ioa_dump->next_page_index++;
1515 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1517 rem_len = length - bytes_copied;
1518 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1519 cur_len = min(rem_len, rem_page_len);
1521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1522 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1525 rc = ipr_get_ldump_data_section(ioa_cfg,
1526 pci_address + bytes_copied,
1527 &page[ioa_dump->page_offset / 4],
1528 (cur_len / sizeof(u32)));
1530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1533 ioa_dump->page_offset += cur_len;
1534 bytes_copied += cur_len;
1542 return bytes_copied;
1546 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1547 * @hdr: dump entry header struct
1552 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1554 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1556 hdr->offset = sizeof(*hdr);
1557 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1561 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1562 * @ioa_cfg: ioa config struct
1563 * @driver_dump: driver dump struct
1568 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1569 struct ipr_driver_dump *driver_dump)
1571 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1573 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1574 driver_dump->ioa_type_entry.hdr.len =
1575 sizeof(struct ipr_dump_ioa_type_entry) -
1576 sizeof(struct ipr_dump_entry_header);
1577 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1578 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1579 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1580 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1581 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1582 ucode_vpd->minor_release[1];
1583 driver_dump->hdr.num_entries++;
1587 * ipr_dump_version_data - Fill in the driver version in the dump.
1588 * @ioa_cfg: ioa config struct
1589 * @driver_dump: driver dump struct
1594 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1595 struct ipr_driver_dump *driver_dump)
1597 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1598 driver_dump->version_entry.hdr.len =
1599 sizeof(struct ipr_dump_version_entry) -
1600 sizeof(struct ipr_dump_entry_header);
1601 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1602 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1603 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1604 driver_dump->hdr.num_entries++;
1608 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1609 * @ioa_cfg: ioa config struct
1610 * @driver_dump: driver dump struct
1615 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1616 struct ipr_driver_dump *driver_dump)
1618 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1619 driver_dump->trace_entry.hdr.len =
1620 sizeof(struct ipr_dump_trace_entry) -
1621 sizeof(struct ipr_dump_entry_header);
1622 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1623 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1624 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1625 driver_dump->hdr.num_entries++;
1629 * ipr_dump_location_data - Fill in the IOA location in the dump.
1630 * @ioa_cfg: ioa config struct
1631 * @driver_dump: driver dump struct
1636 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1637 struct ipr_driver_dump *driver_dump)
1639 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1640 driver_dump->location_entry.hdr.len =
1641 sizeof(struct ipr_dump_location_entry) -
1642 sizeof(struct ipr_dump_entry_header);
1643 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1644 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1645 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1646 driver_dump->hdr.num_entries++;
1650 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1651 * @ioa_cfg: ioa config struct
1652 * @dump: dump struct
1657 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1659 unsigned long start_addr, sdt_word;
1660 unsigned long lock_flags = 0;
1661 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1662 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1663 u32 num_entries, start_off, end_off;
1664 u32 bytes_to_copy, bytes_copied, rc;
1665 struct ipr_sdt *sdt;
1670 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1672 if (ioa_cfg->sdt_state != GET_DUMP) {
1673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1677 start_addr = readl(ioa_cfg->ioa_mailbox);
1679 if (!ipr_sdt_is_fmt2(start_addr)) {
1680 dev_err(&ioa_cfg->pdev->dev,
1681 "Invalid dump table format: %lx\n", start_addr);
1682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1686 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1688 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1690 /* Initialize the overall dump header */
1691 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1692 driver_dump->hdr.num_entries = 1;
1693 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1694 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1695 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1696 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1698 ipr_dump_version_data(ioa_cfg, driver_dump);
1699 ipr_dump_location_data(ioa_cfg, driver_dump);
1700 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1701 ipr_dump_trace_data(ioa_cfg, driver_dump);
1703 /* Update dump_header */
1704 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1706 /* IOA Dump entry */
1707 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1708 ioa_dump->format = IPR_SDT_FMT2;
1709 ioa_dump->hdr.len = 0;
1710 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1711 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1713 /* First entries in sdt are actually a list of dump addresses and
1714 lengths to gather the real dump data. sdt represents the pointer
1715 to the ioa generated dump table. Dump data will be extracted based
1716 on entries in this table */
1717 sdt = &ioa_dump->sdt;
1719 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1720 sizeof(struct ipr_sdt) / sizeof(__be32));
1722 /* Smart Dump table is ready to use and the first entry is valid */
1723 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1724 dev_err(&ioa_cfg->pdev->dev,
1725 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1726 rc, be32_to_cpu(sdt->hdr.state));
1727 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1728 ioa_cfg->sdt_state = DUMP_OBTAINED;
1729 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1733 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1735 if (num_entries > IPR_NUM_SDT_ENTRIES)
1736 num_entries = IPR_NUM_SDT_ENTRIES;
1738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1740 for (i = 0; i < num_entries; i++) {
1741 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1742 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1746 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1747 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1748 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1749 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1751 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1752 bytes_to_copy = end_off - start_off;
1753 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1754 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1758 /* Copy data from adapter to driver buffers */
1759 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
1762 ioa_dump->hdr.len += bytes_copied;
1764 if (bytes_copied != bytes_to_copy) {
1765 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1772 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
1774 /* Update dump_header */
1775 driver_dump->hdr.len += ioa_dump->hdr.len;
1777 ioa_cfg->sdt_state = DUMP_OBTAINED;
1782 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1786 * ipr_release_dump - Free adapter dump memory
1787 * @kref: kref struct
1792 static void ipr_release_dump(struct kref *kref)
1794 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
1795 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
1796 unsigned long lock_flags = 0;
1800 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1801 ioa_cfg->dump = NULL;
1802 ioa_cfg->sdt_state = INACTIVE;
1803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1805 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
1806 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
1813 * ipr_worker_thread - Worker thread
1814 * @data: ioa config struct
1816 * Called at task level from a work thread. This function takes care
1817 * of adding and removing device from the mid-layer as configuration
1818 * changes are detected by the adapter.
1823 static void ipr_worker_thread(void *data)
1825 unsigned long lock_flags;
1826 struct ipr_resource_entry *res;
1827 struct scsi_device *sdev;
1828 struct ipr_dump *dump;
1829 struct ipr_ioa_cfg *ioa_cfg = data;
1830 u8 bus, target, lun;
1834 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1836 if (ioa_cfg->sdt_state == GET_DUMP) {
1837 dump = ioa_cfg->dump;
1839 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1842 kref_get(&dump->kref);
1843 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1844 ipr_get_ioa_dump(ioa_cfg, dump);
1845 kref_put(&dump->kref, ipr_release_dump);
1847 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1848 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
1849 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1850 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1857 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
1858 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1862 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1863 if (res->del_from_ml && res->sdev) {
1866 if (!scsi_device_get(sdev)) {
1868 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1869 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1870 scsi_remove_device(sdev);
1871 scsi_device_put(sdev);
1872 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1879 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1880 if (res->add_to_ml) {
1881 bus = res->cfgte.res_addr.bus;
1882 target = res->cfgte.res_addr.target;
1883 lun = res->cfgte.res_addr.lun;
1884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1885 scsi_add_device(ioa_cfg->host, bus, target, lun);
1886 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1892 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
1896 #ifdef CONFIG_SCSI_IPR_TRACE
1898 * ipr_read_trace - Dump the adapter trace
1899 * @kobj: kobject struct
1902 * @count: buffer size
1905 * number of bytes printed to buffer
1907 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
1908 loff_t off, size_t count)
1910 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
1911 struct Scsi_Host *shost = class_to_shost(cdev);
1912 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1913 unsigned long lock_flags = 0;
1914 int size = IPR_TRACE_SIZE;
1915 char *src = (char *)ioa_cfg->trace;
1919 if (off + count > size) {
1924 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1925 memcpy(buf, &src[off], count);
1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1930 static struct bin_attribute ipr_trace_attr = {
1936 .read = ipr_read_trace,
1941 * ipr_show_fw_version - Show the firmware version
1942 * @class_dev: class device struct
1946 * number of bytes printed to buffer
1948 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
1950 struct Scsi_Host *shost = class_to_shost(class_dev);
1951 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1952 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1953 unsigned long lock_flags = 0;
1956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1957 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
1958 ucode_vpd->major_release, ucode_vpd->card_type,
1959 ucode_vpd->minor_release[0],
1960 ucode_vpd->minor_release[1]);
1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1965 static struct class_device_attribute ipr_fw_version_attr = {
1967 .name = "fw_version",
1970 .show = ipr_show_fw_version,
1974 * ipr_show_log_level - Show the adapter's error logging level
1975 * @class_dev: class device struct
1979 * number of bytes printed to buffer
1981 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
1983 struct Scsi_Host *shost = class_to_shost(class_dev);
1984 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1985 unsigned long lock_flags = 0;
1988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1989 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
1990 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1995 * ipr_store_log_level - Change the adapter's error logging level
1996 * @class_dev: class device struct
2000 * number of bytes printed to buffer
2002 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2003 const char *buf, size_t count)
2005 struct Scsi_Host *shost = class_to_shost(class_dev);
2006 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2007 unsigned long lock_flags = 0;
2009 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2010 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2015 static struct class_device_attribute ipr_log_level_attr = {
2017 .name = "log_level",
2018 .mode = S_IRUGO | S_IWUSR,
2020 .show = ipr_show_log_level,
2021 .store = ipr_store_log_level
2025 * ipr_store_diagnostics - IOA Diagnostics interface
2026 * @class_dev: class_device struct
2028 * @count: buffer size
2030 * This function will reset the adapter and wait a reasonable
2031 * amount of time for any errors that the adapter might log.
2034 * count on success / other on failure
2036 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2037 const char *buf, size_t count)
2039 struct Scsi_Host *shost = class_to_shost(class_dev);
2040 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2041 unsigned long lock_flags = 0;
2044 if (!capable(CAP_SYS_ADMIN))
2047 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2048 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2049 ioa_cfg->errors_logged = 0;
2050 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2052 if (ioa_cfg->in_reset_reload) {
2053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2054 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2056 /* Wait for a second for any errors to be logged */
2059 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2063 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2064 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2071 static struct class_device_attribute ipr_diagnostics_attr = {
2073 .name = "run_diagnostics",
2076 .store = ipr_store_diagnostics
2080 * ipr_store_reset_adapter - Reset the adapter
2081 * @class_dev: class_device struct
2083 * @count: buffer size
2085 * This function will reset the adapter.
2088 * count on success / other on failure
2090 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2091 const char *buf, size_t count)
2093 struct Scsi_Host *shost = class_to_shost(class_dev);
2094 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2095 unsigned long lock_flags;
2098 if (!capable(CAP_SYS_ADMIN))
2101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2102 if (!ioa_cfg->in_reset_reload)
2103 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2105 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2110 static struct class_device_attribute ipr_ioa_reset_attr = {
2112 .name = "reset_host",
2115 .store = ipr_store_reset_adapter
2119 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2120 * @buf_len: buffer length
2122 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2123 * list to use for microcode download
2126 * pointer to sglist / NULL on failure
2128 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2130 int sg_size, order, bsize_elem, num_elem, i, j;
2131 struct ipr_sglist *sglist;
2132 struct scatterlist *scatterlist;
2135 /* Get the minimum size per scatter/gather element */
2136 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2138 /* Get the actual size per element */
2139 order = get_order(sg_size);
2141 /* Determine the actual number of bytes per element */
2142 bsize_elem = PAGE_SIZE * (1 << order);
2144 /* Determine the actual number of sg entries needed */
2145 if (buf_len % bsize_elem)
2146 num_elem = (buf_len / bsize_elem) + 1;
2148 num_elem = buf_len / bsize_elem;
2150 /* Allocate a scatter/gather list for the DMA */
2151 sglist = kmalloc(sizeof(struct ipr_sglist) +
2152 (sizeof(struct scatterlist) * (num_elem - 1)),
2155 if (sglist == NULL) {
2160 memset(sglist, 0, sizeof(struct ipr_sglist) +
2161 (sizeof(struct scatterlist) * (num_elem - 1)));
2163 scatterlist = sglist->scatterlist;
2165 sglist->order = order;
2166 sglist->num_sg = num_elem;
2168 /* Allocate a bunch of sg elements */
2169 for (i = 0; i < num_elem; i++) {
2170 page = alloc_pages(GFP_KERNEL, order);
2174 /* Free up what we already allocated */
2175 for (j = i - 1; j >= 0; j--)
2176 __free_pages(scatterlist[j].page, order);
2181 scatterlist[i].page = page;
2188 * ipr_free_ucode_buffer - Frees a microcode download buffer
2189 * @p_dnld: scatter/gather list pointer
2191 * Free a DMA'able ucode download buffer previously allocated with
2192 * ipr_alloc_ucode_buffer
2197 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2201 for (i = 0; i < sglist->num_sg; i++)
2202 __free_pages(sglist->scatterlist[i].page, sglist->order);
2208 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2209 * @sglist: scatter/gather list pointer
2210 * @buffer: buffer pointer
2211 * @len: buffer length
2213 * Copy a microcode image from a user buffer into a buffer allocated by
2214 * ipr_alloc_ucode_buffer
2217 * 0 on success / other on failure
2219 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2220 u8 *buffer, u32 len)
2222 int bsize_elem, i, result = 0;
2223 struct scatterlist *scatterlist;
2226 /* Determine the actual number of bytes per element */
2227 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2229 scatterlist = sglist->scatterlist;
2231 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2232 kaddr = kmap(scatterlist[i].page);
2233 memcpy(kaddr, buffer, bsize_elem);
2234 kunmap(scatterlist[i].page);
2236 scatterlist[i].length = bsize_elem;
2244 if (len % bsize_elem) {
2245 kaddr = kmap(scatterlist[i].page);
2246 memcpy(kaddr, buffer, len % bsize_elem);
2247 kunmap(scatterlist[i].page);
2249 scatterlist[i].length = len % bsize_elem;
2252 sglist->buffer_len = len;
2257 * ipr_map_ucode_buffer - Map a microcode download buffer
2258 * @ipr_cmd: ipr command struct
2259 * @sglist: scatter/gather list
2260 * @len: total length of download buffer
2262 * Maps a microcode download scatter/gather list for DMA and
2266 * 0 on success / -EIO on failure
2268 static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd,
2269 struct ipr_sglist *sglist, int len)
2271 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2272 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2273 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2274 struct scatterlist *scatterlist = sglist->scatterlist;
2277 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist,
2278 sglist->num_sg, DMA_TO_DEVICE);
2280 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2281 ioarcb->write_data_transfer_length = cpu_to_be32(len);
2282 ioarcb->write_ioadl_len =
2283 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2285 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2286 ioadl[i].flags_and_data_len =
2287 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2289 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2292 if (likely(ipr_cmd->dma_use_sg)) {
2293 ioadl[i-1].flags_and_data_len |=
2294 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2297 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
2305 * ipr_store_update_fw - Update the firmware on the adapter
2306 * @class_dev: class_device struct
2308 * @count: buffer size
2310 * This function will update the firmware on the adapter.
2313 * count on success / other on failure
2315 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2316 const char *buf, size_t count)
2318 struct Scsi_Host *shost = class_to_shost(class_dev);
2319 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2320 struct ipr_ucode_image_header *image_hdr;
2321 const struct firmware *fw_entry;
2322 struct ipr_sglist *sglist;
2323 unsigned long lock_flags;
2326 int len, result, dnld_size;
2328 if (!capable(CAP_SYS_ADMIN))
2331 len = snprintf(fname, 99, "%s", buf);
2332 fname[len-1] = '\0';
2334 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2335 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2339 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2341 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2342 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2343 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2344 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2345 release_firmware(fw_entry);
2349 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2350 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2351 sglist = ipr_alloc_ucode_buffer(dnld_size);
2354 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2355 release_firmware(fw_entry);
2359 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2362 dev_err(&ioa_cfg->pdev->dev,
2363 "Microcode buffer copy to DMA buffer failed\n");
2364 ipr_free_ucode_buffer(sglist);
2365 release_firmware(fw_entry);
2369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2371 if (ioa_cfg->ucode_sglist) {
2372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2373 dev_err(&ioa_cfg->pdev->dev,
2374 "Microcode download already in progress\n");
2375 ipr_free_ucode_buffer(sglist);
2376 release_firmware(fw_entry);
2380 ioa_cfg->ucode_sglist = sglist;
2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2383 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2385 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2386 ioa_cfg->ucode_sglist = NULL;
2387 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2389 ipr_free_ucode_buffer(sglist);
2390 release_firmware(fw_entry);
2395 static struct class_device_attribute ipr_update_fw_attr = {
2397 .name = "update_fw",
2400 .store = ipr_store_update_fw
2403 static struct class_device_attribute *ipr_ioa_attrs[] = {
2404 &ipr_fw_version_attr,
2405 &ipr_log_level_attr,
2406 &ipr_diagnostics_attr,
2407 &ipr_ioa_reset_attr,
2408 &ipr_update_fw_attr,
2412 #ifdef CONFIG_SCSI_IPR_DUMP
2414 * ipr_read_dump - Dump the adapter
2415 * @kobj: kobject struct
2418 * @count: buffer size
2421 * number of bytes printed to buffer
2423 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2424 loff_t off, size_t count)
2426 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2427 struct Scsi_Host *shost = class_to_shost(cdev);
2428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2429 struct ipr_dump *dump;
2430 unsigned long lock_flags = 0;
2435 if (!capable(CAP_SYS_ADMIN))
2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2439 dump = ioa_cfg->dump;
2441 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2445 kref_get(&dump->kref);
2446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2448 if (off > dump->driver_dump.hdr.len) {
2449 kref_put(&dump->kref, ipr_release_dump);
2453 if (off + count > dump->driver_dump.hdr.len) {
2454 count = dump->driver_dump.hdr.len - off;
2458 if (count && off < sizeof(dump->driver_dump)) {
2459 if (off + count > sizeof(dump->driver_dump))
2460 len = sizeof(dump->driver_dump) - off;
2463 src = (u8 *)&dump->driver_dump + off;
2464 memcpy(buf, src, len);
2470 off -= sizeof(dump->driver_dump);
2472 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2473 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2474 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2477 src = (u8 *)&dump->ioa_dump + off;
2478 memcpy(buf, src, len);
2484 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2487 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2488 len = PAGE_ALIGN(off) - off;
2491 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2492 src += off & ~PAGE_MASK;
2493 memcpy(buf, src, len);
2499 kref_put(&dump->kref, ipr_release_dump);
2504 * ipr_alloc_dump - Prepare for adapter dump
2505 * @ioa_cfg: ioa config struct
2508 * 0 on success / other on failure
2510 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2512 struct ipr_dump *dump;
2513 unsigned long lock_flags = 0;
2516 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2519 ipr_err("Dump memory allocation failed\n");
2523 memset(dump, 0, sizeof(struct ipr_dump));
2524 kref_init(&dump->kref);
2525 dump->ioa_cfg = ioa_cfg;
2527 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2529 if (INACTIVE != ioa_cfg->sdt_state) {
2530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2535 ioa_cfg->dump = dump;
2536 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2537 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2538 ioa_cfg->dump_taken = 1;
2539 schedule_work(&ioa_cfg->work_q);
2541 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2548 * ipr_free_dump - Free adapter dump memory
2549 * @ioa_cfg: ioa config struct
2552 * 0 on success / other on failure
2554 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2556 struct ipr_dump *dump;
2557 unsigned long lock_flags = 0;
2561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2562 dump = ioa_cfg->dump;
2564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2568 ioa_cfg->dump = NULL;
2569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2571 kref_put(&dump->kref, ipr_release_dump);
2578 * ipr_write_dump - Setup dump state of adapter
2579 * @kobj: kobject struct
2582 * @count: buffer size
2585 * number of bytes printed to buffer
2587 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
2588 loff_t off, size_t count)
2590 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2591 struct Scsi_Host *shost = class_to_shost(cdev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2595 if (!capable(CAP_SYS_ADMIN))
2599 rc = ipr_alloc_dump(ioa_cfg);
2600 else if (buf[0] == '0')
2601 rc = ipr_free_dump(ioa_cfg);
2611 static struct bin_attribute ipr_dump_attr = {
2614 .mode = S_IRUSR | S_IWUSR,
2617 .read = ipr_read_dump,
2618 .write = ipr_write_dump
2621 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
2625 * ipr_change_queue_depth - Change the device's queue depth
2626 * @sdev: scsi device struct
2627 * @qdepth: depth to set
2632 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
2634 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2635 return sdev->queue_depth;
2639 * ipr_change_queue_type - Change the device's queue type
2640 * @dsev: scsi device struct
2641 * @tag_type: type of tags to use
2644 * actual queue type set
2646 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
2648 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2649 struct ipr_resource_entry *res;
2650 unsigned long lock_flags = 0;
2652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2653 res = (struct ipr_resource_entry *)sdev->hostdata;
2656 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
2658 * We don't bother quiescing the device here since the
2659 * adapter firmware does it for us.
2661 scsi_set_tag_type(sdev, tag_type);
2664 scsi_activate_tcq(sdev, sdev->queue_depth);
2666 scsi_deactivate_tcq(sdev, sdev->queue_depth);
2672 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2677 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2678 * @dev: device struct
2682 * number of bytes printed to buffer
2684 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
2686 struct scsi_device *sdev = to_scsi_device(dev);
2687 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2688 struct ipr_resource_entry *res;
2689 unsigned long lock_flags = 0;
2690 ssize_t len = -ENXIO;
2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2693 res = (struct ipr_resource_entry *)sdev->hostdata;
2695 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
2696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2700 static struct device_attribute ipr_adapter_handle_attr = {
2702 .name = "adapter_handle",
2705 .show = ipr_show_adapter_handle
2708 static struct device_attribute *ipr_dev_attrs[] = {
2709 &ipr_adapter_handle_attr,
2714 * ipr_biosparam - Return the HSC mapping
2715 * @sdev: scsi device struct
2716 * @block_device: block device pointer
2717 * @capacity: capacity of the device
2718 * @parm: Array containing returned HSC values.
2720 * This function generates the HSC parms that fdisk uses.
2721 * We want to make sure we return something that places partitions
2722 * on 4k boundaries for best performance with the IOA.
2727 static int ipr_biosparam(struct scsi_device *sdev,
2728 struct block_device *block_device,
2729 sector_t capacity, int *parm)
2737 cylinders = capacity;
2738 sector_div(cylinders, (128 * 32));
2743 parm[2] = cylinders;
2749 * ipr_slave_destroy - Unconfigure a SCSI device
2750 * @sdev: scsi device struct
2755 static void ipr_slave_destroy(struct scsi_device *sdev)
2757 struct ipr_resource_entry *res;
2758 struct ipr_ioa_cfg *ioa_cfg;
2759 unsigned long lock_flags = 0;
2761 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2763 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2764 res = (struct ipr_resource_entry *) sdev->hostdata;
2766 sdev->hostdata = NULL;
2769 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2773 * ipr_slave_configure - Configure a SCSI device
2774 * @sdev: scsi device struct
2776 * This function configures the specified scsi device.
2781 static int ipr_slave_configure(struct scsi_device *sdev)
2783 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2784 struct ipr_resource_entry *res;
2785 unsigned long lock_flags = 0;
2787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2788 res = sdev->hostdata;
2790 if (ipr_is_af_dasd_device(res))
2791 sdev->type = TYPE_RAID;
2792 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
2793 sdev->scsi_level = 4;
2794 sdev->no_uld_attach = 1;
2796 if (ipr_is_vset_device(res)) {
2797 sdev->timeout = IPR_VSET_RW_TIMEOUT;
2798 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
2800 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
2801 sdev->allow_restart = 1;
2802 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2809 * ipr_slave_alloc - Prepare for commands to a device.
2810 * @sdev: scsi device struct
2812 * This function saves a pointer to the resource entry
2813 * in the scsi device struct if the device exists. We
2814 * can then use this pointer in ipr_queuecommand when
2815 * handling new commands.
2820 static int ipr_slave_alloc(struct scsi_device *sdev)
2822 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2823 struct ipr_resource_entry *res;
2824 unsigned long lock_flags;
2826 sdev->hostdata = NULL;
2828 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2830 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2831 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2832 (res->cfgte.res_addr.target == sdev->id) &&
2833 (res->cfgte.res_addr.lun == sdev->lun)) {
2837 sdev->hostdata = res;
2838 res->needs_sync_complete = 1;
2843 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2849 * ipr_eh_host_reset - Reset the host adapter
2850 * @scsi_cmd: scsi command struct
2855 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
2857 struct ipr_ioa_cfg *ioa_cfg;
2861 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2863 dev_err(&ioa_cfg->pdev->dev,
2864 "Adapter being reset as a result of error recovery.\n");
2866 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2867 ioa_cfg->sdt_state = GET_DUMP;
2869 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2875 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
2879 spin_lock_irq(cmd->device->host->host_lock);
2880 rc = __ipr_eh_host_reset(cmd);
2881 spin_unlock_irq(cmd->device->host->host_lock);
2887 * ipr_eh_dev_reset - Reset the device
2888 * @scsi_cmd: scsi command struct
2890 * This function issues a device reset to the affected device.
2891 * A LUN reset will be sent to the device first. If that does
2892 * not work, a target reset will be sent.
2897 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
2899 struct ipr_cmnd *ipr_cmd;
2900 struct ipr_ioa_cfg *ioa_cfg;
2901 struct ipr_resource_entry *res;
2902 struct ipr_cmd_pkt *cmd_pkt;
2906 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2907 res = scsi_cmd->device->hostdata;
2909 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2913 * If we are currently going through reset/reload, return failed. This will force the
2914 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2917 if (ioa_cfg->in_reset_reload)
2919 if (ioa_cfg->ioa_is_dead)
2922 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2923 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2924 if (ipr_cmd->scsi_cmd)
2925 ipr_cmd->done = ipr_scsi_eh_done;
2929 res->resetting_device = 1;
2931 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2933 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2934 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2935 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2936 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2938 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2939 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2941 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2943 res->resetting_device = 0;
2945 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2948 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2951 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
2955 spin_lock_irq(cmd->device->host->host_lock);
2956 rc = __ipr_eh_dev_reset(cmd);
2957 spin_unlock_irq(cmd->device->host->host_lock);
2963 * ipr_bus_reset_done - Op done function for bus reset.
2964 * @ipr_cmd: ipr command struct
2966 * This function is the op done function for a bus reset
2971 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
2973 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2974 struct ipr_resource_entry *res;
2977 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2978 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
2979 sizeof(res->cfgte.res_handle))) {
2980 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
2986 * If abort has not completed, indicate the reset has, else call the
2987 * abort's done function to wake the sleeping eh thread
2989 if (ipr_cmd->sibling->sibling)
2990 ipr_cmd->sibling->sibling = NULL;
2992 ipr_cmd->sibling->done(ipr_cmd->sibling);
2994 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2999 * ipr_abort_timeout - An abort task has timed out
3000 * @ipr_cmd: ipr command struct
3002 * This function handles when an abort task times out. If this
3003 * happens we issue a bus reset since we have resources tied
3004 * up that must be freed before returning to the midlayer.
3009 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3011 struct ipr_cmnd *reset_cmd;
3012 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3013 struct ipr_cmd_pkt *cmd_pkt;
3014 unsigned long lock_flags = 0;
3017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3018 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3023 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3024 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3025 ipr_cmd->sibling = reset_cmd;
3026 reset_cmd->sibling = ipr_cmd;
3027 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3028 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3029 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3030 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3031 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3033 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3039 * ipr_cancel_op - Cancel specified op
3040 * @scsi_cmd: scsi command struct
3042 * This function cancels specified op.
3047 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3049 struct ipr_cmnd *ipr_cmd;
3050 struct ipr_ioa_cfg *ioa_cfg;
3051 struct ipr_resource_entry *res;
3052 struct ipr_cmd_pkt *cmd_pkt;
3057 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3058 res = scsi_cmd->device->hostdata;
3060 /* If we are currently going through reset/reload, return failed.
3061 * This will force the mid-layer to call ipr_eh_host_reset,
3062 * which will then go to sleep and wait for the reset to complete
3064 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3066 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3069 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3070 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3071 ipr_cmd->done = ipr_scsi_eh_done;
3080 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3081 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3082 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3083 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3084 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3085 ipr_cmd->u.sdev = scsi_cmd->device;
3087 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3088 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3089 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3092 * If the abort task timed out and we sent a bus reset, we will get
3093 * one the following responses to the abort
3095 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3100 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3101 res->needs_sync_complete = 1;
3104 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3108 * ipr_eh_abort - Abort a single op
3109 * @scsi_cmd: scsi command struct
3114 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3116 unsigned long flags;
3121 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3122 rc = ipr_cancel_op(scsi_cmd);
3123 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
3130 * ipr_handle_other_interrupt - Handle "other" interrupts
3131 * @ioa_cfg: ioa config struct
3132 * @int_reg: interrupt register
3135 * IRQ_NONE / IRQ_HANDLED
3137 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3138 volatile u32 int_reg)
3140 irqreturn_t rc = IRQ_HANDLED;
3142 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3143 /* Mask the interrupt */
3144 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3146 /* Clear the interrupt */
3147 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3148 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3150 list_del(&ioa_cfg->reset_cmd->queue);
3151 del_timer(&ioa_cfg->reset_cmd->timer);
3152 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3154 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3155 ioa_cfg->ioa_unit_checked = 1;
3157 dev_err(&ioa_cfg->pdev->dev,
3158 "Permanent IOA failure. 0x%08X\n", int_reg);
3160 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3161 ioa_cfg->sdt_state = GET_DUMP;
3163 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3164 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3171 * ipr_isr - Interrupt service routine
3173 * @devp: pointer to ioa config struct
3174 * @regs: pt_regs struct
3177 * IRQ_NONE / IRQ_HANDLED
3179 static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3182 unsigned long lock_flags = 0;
3183 volatile u32 int_reg, int_mask_reg;
3186 struct ipr_cmnd *ipr_cmd;
3187 irqreturn_t rc = IRQ_NONE;
3189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3191 /* If interrupts are disabled, ignore the interrupt */
3192 if (!ioa_cfg->allow_interrupts) {
3193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3197 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3198 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3200 /* If an interrupt on the adapter did not occur, ignore it */
3201 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3202 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3209 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3210 ioa_cfg->toggle_bit) {
3212 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3213 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3215 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3216 ioa_cfg->errors_logged++;
3217 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3219 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3220 ioa_cfg->sdt_state = GET_DUMP;
3222 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3229 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3231 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3233 list_del(&ipr_cmd->queue);
3234 del_timer(&ipr_cmd->timer);
3235 ipr_cmd->done(ipr_cmd);
3239 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3240 ioa_cfg->hrrq_curr++;
3242 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3243 ioa_cfg->toggle_bit ^= 1u;
3247 if (ipr_cmd != NULL) {
3248 /* Clear the PCI interrupt */
3249 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3250 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3255 if (unlikely(rc == IRQ_NONE))
3256 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3258 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3263 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3264 * @ioa_cfg: ioa config struct
3265 * @ipr_cmd: ipr command struct
3268 * 0 on success / -1 on failure
3270 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3271 struct ipr_cmnd *ipr_cmd)
3274 struct scatterlist *sglist;
3276 u32 ioadl_flags = 0;
3277 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3278 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3279 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3281 length = scsi_cmd->request_bufflen;
3286 if (scsi_cmd->use_sg) {
3287 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3288 scsi_cmd->request_buffer,
3290 scsi_cmd->sc_data_direction);
3292 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3293 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3294 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3295 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3296 ioarcb->write_ioadl_len =
3297 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3298 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3299 ioadl_flags = IPR_IOADL_FLAGS_READ;
3300 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3301 ioarcb->read_ioadl_len =
3302 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3305 sglist = scsi_cmd->request_buffer;
3307 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3308 ioadl[i].flags_and_data_len =
3309 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3311 cpu_to_be32(sg_dma_address(&sglist[i]));
3314 if (likely(ipr_cmd->dma_use_sg)) {
3315 ioadl[i-1].flags_and_data_len |=
3316 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3319 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3321 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3322 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3323 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3324 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3325 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3326 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3327 ioadl_flags = IPR_IOADL_FLAGS_READ;
3328 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3329 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3332 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3333 scsi_cmd->request_buffer, length,
3334 scsi_cmd->sc_data_direction);
3336 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3337 ipr_cmd->dma_use_sg = 1;
3338 ioadl[0].flags_and_data_len =
3339 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3340 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3343 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3350 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3351 * @scsi_cmd: scsi command struct
3356 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3359 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3361 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3363 case MSG_SIMPLE_TAG:
3364 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3367 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3369 case MSG_ORDERED_TAG:
3370 rc = IPR_FLAGS_LO_ORDERED_TASK;
3379 * ipr_erp_done - Process completion of ERP for a device
3380 * @ipr_cmd: ipr command struct
3382 * This function copies the sense buffer into the scsi_cmd
3383 * struct and pushes the scsi_done function.
3388 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3390 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3391 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3392 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3393 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3395 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3396 scsi_cmd->result |= (DID_ERROR << 16);
3397 ipr_sdev_err(scsi_cmd->device,
3398 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3400 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3401 SCSI_SENSE_BUFFERSIZE);
3405 res->needs_sync_complete = 1;
3408 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3409 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3410 scsi_cmd->scsi_done(scsi_cmd);
3414 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3415 * @ipr_cmd: ipr command struct
3420 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3422 struct ipr_ioarcb *ioarcb;
3423 struct ipr_ioasa *ioasa;
3425 ioarcb = &ipr_cmd->ioarcb;
3426 ioasa = &ipr_cmd->ioasa;
3428 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3429 ioarcb->write_data_transfer_length = 0;
3430 ioarcb->read_data_transfer_length = 0;
3431 ioarcb->write_ioadl_len = 0;
3432 ioarcb->read_ioadl_len = 0;
3434 ioasa->residual_data_len = 0;
3438 * ipr_erp_request_sense - Send request sense to a device
3439 * @ipr_cmd: ipr command struct
3441 * This function sends a request sense to a device as a result
3442 * of a check condition.
3447 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3449 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3450 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3452 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3453 ipr_erp_done(ipr_cmd);
3457 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3459 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3460 cmd_pkt->cdb[0] = REQUEST_SENSE;
3461 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3462 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3463 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3464 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3466 ipr_cmd->ioadl[0].flags_and_data_len =
3467 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3468 ipr_cmd->ioadl[0].address =
3469 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3471 ipr_cmd->ioarcb.read_ioadl_len =
3472 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3473 ipr_cmd->ioarcb.read_data_transfer_length =
3474 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3476 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3477 IPR_REQUEST_SENSE_TIMEOUT * 2);
3481 * ipr_erp_cancel_all - Send cancel all to a device
3482 * @ipr_cmd: ipr command struct
3484 * This function sends a cancel all to a device to clear the
3485 * queue. If we are running TCQ on the device, QERR is set to 1,
3486 * which means all outstanding ops have been dropped on the floor.
3487 * Cancel all will return them to us.
3492 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3494 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3495 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3496 struct ipr_cmd_pkt *cmd_pkt;
3500 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3502 if (!scsi_get_tag_type(scsi_cmd->device)) {
3503 ipr_erp_request_sense(ipr_cmd);
3507 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3508 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3509 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3511 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3512 IPR_CANCEL_ALL_TIMEOUT);
3516 * ipr_dump_ioasa - Dump contents of IOASA
3517 * @ioa_cfg: ioa config struct
3518 * @ipr_cmd: ipr command struct
3520 * This function is invoked by the interrupt handler when ops
3521 * fail. It will log the IOASA if appropriate. Only called
3527 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3528 struct ipr_cmnd *ipr_cmd)
3533 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3534 __be32 *ioasa_data = (__be32 *)ioasa;
3537 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3542 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3545 error_index = ipr_get_error(ioasc);
3547 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3548 /* Don't log an error if the IOA already logged one */
3549 if (ioasa->ilid != 0)
3552 if (ipr_error_table[error_index].log_ioasa == 0)
3556 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3557 ipr_error_table[error_index].error);
3559 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3560 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3561 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3562 "Device End state: %s Phase: %s\n",
3563 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3564 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3567 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3568 data_len = sizeof(struct ipr_ioasa);
3570 data_len = be16_to_cpu(ioasa->ret_stat_len);
3572 ipr_err("IOASA Dump:\n");
3574 for (i = 0; i < data_len / 4; i += 4) {
3575 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3576 be32_to_cpu(ioasa_data[i]),
3577 be32_to_cpu(ioasa_data[i+1]),
3578 be32_to_cpu(ioasa_data[i+2]),
3579 be32_to_cpu(ioasa_data[i+3]));
3584 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3586 * @sense_buf: sense data buffer
3591 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3594 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3595 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3596 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3597 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3599 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3601 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3604 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3606 if (ipr_is_vset_device(res) &&
3607 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3608 ioasa->u.vset.failing_lba_hi != 0) {
3609 sense_buf[0] = 0x72;
3610 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3611 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3612 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3616 sense_buf[9] = 0x0A;
3617 sense_buf[10] = 0x80;
3619 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3621 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3622 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3623 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3624 sense_buf[15] = failing_lba & 0x000000ff;
3626 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3628 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3629 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3630 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3631 sense_buf[19] = failing_lba & 0x000000ff;
3633 sense_buf[0] = 0x70;
3634 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3635 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3636 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3638 /* Illegal request */
3639 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3640 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3641 sense_buf[7] = 10; /* additional length */
3643 /* IOARCB was in error */
3644 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3645 sense_buf[15] = 0xC0;
3646 else /* Parameter data was invalid */
3647 sense_buf[15] = 0x80;
3650 ((IPR_FIELD_POINTER_MASK &
3651 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3653 (IPR_FIELD_POINTER_MASK &
3654 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3656 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3657 if (ipr_is_vset_device(res))
3658 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3660 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3662 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3663 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3664 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3665 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3666 sense_buf[6] = failing_lba & 0x000000ff;
3669 sense_buf[7] = 6; /* additional length */
3675 * ipr_erp_start - Process an error response for a SCSI op
3676 * @ioa_cfg: ioa config struct
3677 * @ipr_cmd: ipr command struct
3679 * This function determines whether or not to initiate ERP
3680 * on the affected device.
3685 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3686 struct ipr_cmnd *ipr_cmd)
3688 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3689 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3690 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3693 ipr_scsi_eh_done(ipr_cmd);
3697 if (ipr_is_gscsi(res))
3698 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3700 ipr_gen_sense(ipr_cmd);
3702 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3703 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3704 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3706 case IPR_IOASC_IR_RESOURCE_HANDLE:
3707 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3709 case IPR_IOASC_HW_SEL_TIMEOUT:
3710 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3711 res->needs_sync_complete = 1;
3713 case IPR_IOASC_SYNC_REQUIRED:
3715 res->needs_sync_complete = 1;
3716 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3718 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3719 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3721 case IPR_IOASC_BUS_WAS_RESET:
3722 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3724 * Report the bus reset and ask for a retry. The device
3725 * will give CC/UA the next command.
3727 if (!res->resetting_device)
3728 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3729 scsi_cmd->result |= (DID_ERROR << 16);
3730 res->needs_sync_complete = 1;
3732 case IPR_IOASC_HW_DEV_BUS_STATUS:
3733 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3734 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3735 ipr_erp_cancel_all(ipr_cmd);
3738 res->needs_sync_complete = 1;
3740 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3743 scsi_cmd->result |= (DID_ERROR << 16);
3744 if (!ipr_is_vset_device(res))
3745 res->needs_sync_complete = 1;
3749 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3750 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3751 scsi_cmd->scsi_done(scsi_cmd);
3755 * ipr_scsi_done - mid-layer done function
3756 * @ipr_cmd: ipr command struct
3758 * This function is invoked by the interrupt handler for
3759 * ops generated by the SCSI mid-layer
3764 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3767 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3768 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3770 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3772 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3773 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3775 scsi_cmd->scsi_done(scsi_cmd);
3777 ipr_erp_start(ioa_cfg, ipr_cmd);
3781 * ipr_save_ioafp_mode_select - Save adapters mode select data
3782 * @ioa_cfg: ioa config struct
3783 * @scsi_cmd: scsi command struct
3785 * This function saves mode select data for the adapter to
3786 * use following an adapter reset.
3789 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3791 static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3792 struct scsi_cmnd *scsi_cmd)
3794 if (!ioa_cfg->saved_mode_pages) {
3795 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3797 if (!ioa_cfg->saved_mode_pages) {
3798 dev_err(&ioa_cfg->pdev->dev,
3799 "IOA mode select buffer allocation failed\n");
3800 return SCSI_MLQUEUE_HOST_BUSY;
3804 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3805 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3810 * ipr_queuecommand - Queue a mid-layer request
3811 * @scsi_cmd: scsi command struct
3812 * @done: done function
3814 * This function queues a request generated by the mid-layer.
3818 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3819 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3821 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3822 void (*done) (struct scsi_cmnd *))
3824 struct ipr_ioa_cfg *ioa_cfg;
3825 struct ipr_resource_entry *res;
3826 struct ipr_ioarcb *ioarcb;
3827 struct ipr_cmnd *ipr_cmd;
3830 scsi_cmd->scsi_done = done;
3831 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3832 res = scsi_cmd->device->hostdata;
3833 scsi_cmd->result = (DID_OK << 16);
3836 * We are currently blocking all devices due to a host reset
3837 * We have told the host to stop giving us new requests, but
3838 * ERP ops don't count. FIXME
3840 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3841 return SCSI_MLQUEUE_HOST_BUSY;
3844 * FIXME - Create scsi_set_host_offline interface
3845 * and the ioa_is_dead check can be removed
3847 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3848 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3849 scsi_cmd->result = (DID_NO_CONNECT << 16);
3850 scsi_cmd->scsi_done(scsi_cmd);
3854 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3855 ioarcb = &ipr_cmd->ioarcb;
3856 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3858 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3859 ipr_cmd->scsi_cmd = scsi_cmd;
3860 ioarcb->res_handle = res->cfgte.res_handle;
3861 ipr_cmd->done = ipr_scsi_done;
3862 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3864 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3865 if (scsi_cmd->underflow == 0)
3866 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3868 if (res->needs_sync_complete) {
3869 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3870 res->needs_sync_complete = 0;
3873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3874 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3875 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3876 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3879 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3880 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3881 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3883 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3884 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3886 if (likely(rc == 0))
3887 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3889 if (likely(rc == 0)) {
3891 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3892 ioa_cfg->regs.ioarrin_reg);
3894 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3895 return SCSI_MLQUEUE_HOST_BUSY;
3902 * ipr_info - Get information about the card/driver
3903 * @scsi_host: scsi host struct
3906 * pointer to buffer with description string
3908 static const char * ipr_ioa_info(struct Scsi_Host *host)
3910 static char buffer[512];
3911 struct ipr_ioa_cfg *ioa_cfg;
3912 unsigned long lock_flags = 0;
3914 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3916 spin_lock_irqsave(host->host_lock, lock_flags);
3917 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3918 spin_unlock_irqrestore(host->host_lock, lock_flags);
3923 static struct scsi_host_template driver_template = {
3924 .module = THIS_MODULE,
3926 .info = ipr_ioa_info,
3927 .queuecommand = ipr_queuecommand,
3928 .eh_abort_handler = ipr_eh_abort,
3929 .eh_device_reset_handler = ipr_eh_dev_reset,
3930 .eh_host_reset_handler = ipr_eh_host_reset,
3931 .slave_alloc = ipr_slave_alloc,
3932 .slave_configure = ipr_slave_configure,
3933 .slave_destroy = ipr_slave_destroy,
3934 .change_queue_depth = ipr_change_queue_depth,
3935 .change_queue_type = ipr_change_queue_type,
3936 .bios_param = ipr_biosparam,
3937 .can_queue = IPR_MAX_COMMANDS,
3939 .sg_tablesize = IPR_MAX_SGLIST,
3940 .max_sectors = IPR_IOA_MAX_SECTORS,
3941 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3942 .use_clustering = ENABLE_CLUSTERING,
3943 .shost_attrs = ipr_ioa_attrs,
3944 .sdev_attrs = ipr_dev_attrs,
3945 .proc_name = IPR_NAME
3948 #ifdef CONFIG_PPC_PSERIES
3949 static const u16 ipr_blocked_processors[] = {
3961 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3962 * @ioa_cfg: ioa cfg struct
3964 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3965 * certain pSeries hardware. This function determines if the given
3966 * adapter is in one of these confgurations or not.
3969 * 1 if adapter is not supported / 0 if adapter is supported
3971 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
3976 if (ioa_cfg->type == 0x5702) {
3977 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
3978 &rev_id) == PCIBIOS_SUCCESSFUL) {
3980 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
3981 if (__is_processor(ipr_blocked_processors[i]))
3990 #define ipr_invalid_adapter(ioa_cfg) 0
3994 * ipr_ioa_bringdown_done - IOA bring down completion.
3995 * @ipr_cmd: ipr command struct
3997 * This function processes the completion of an adapter bring down.
3998 * It wakes any reset sleepers.
4003 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4005 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4008 ioa_cfg->in_reset_reload = 0;
4009 ioa_cfg->reset_retries = 0;
4010 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4011 wake_up_all(&ioa_cfg->reset_wait_q);
4013 spin_unlock_irq(ioa_cfg->host->host_lock);
4014 scsi_unblock_requests(ioa_cfg->host);
4015 spin_lock_irq(ioa_cfg->host->host_lock);
4018 return IPR_RC_JOB_RETURN;
4022 * ipr_ioa_reset_done - IOA reset completion.
4023 * @ipr_cmd: ipr command struct
4025 * This function processes the completion of an adapter reset.
4026 * It schedules any necessary mid-layer add/removes and
4027 * wakes any reset sleepers.
4032 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4034 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4035 struct ipr_resource_entry *res;
4036 struct ipr_hostrcb *hostrcb, *temp;
4040 ioa_cfg->in_reset_reload = 0;
4041 ioa_cfg->allow_cmds = 1;
4042 ioa_cfg->reset_cmd = NULL;
4044 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4045 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4050 schedule_work(&ioa_cfg->work_q);
4052 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4053 list_del(&hostrcb->queue);
4054 if (i++ < IPR_NUM_LOG_HCAMS)
4055 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4057 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4060 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4062 ioa_cfg->reset_retries = 0;
4063 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4064 wake_up_all(&ioa_cfg->reset_wait_q);
4066 spin_unlock_irq(ioa_cfg->host->host_lock);
4067 scsi_unblock_requests(ioa_cfg->host);
4068 spin_lock_irq(ioa_cfg->host->host_lock);
4070 if (!ioa_cfg->allow_cmds)
4071 scsi_block_requests(ioa_cfg->host);
4074 return IPR_RC_JOB_RETURN;
4078 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4079 * @supported_dev: supported device struct
4080 * @vpids: vendor product id struct
4085 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4086 struct ipr_std_inq_vpids *vpids)
4088 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4089 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4090 supported_dev->num_records = 1;
4091 supported_dev->data_length =
4092 cpu_to_be16(sizeof(struct ipr_supported_device));
4093 supported_dev->reserved = 0;
4097 * ipr_set_supported_devs - Send Set Supported Devices for a device
4098 * @ipr_cmd: ipr command struct
4100 * This function send a Set Supported Devices to the adapter
4103 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4105 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4107 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4108 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4109 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4110 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4111 struct ipr_resource_entry *res = ipr_cmd->u.res;
4113 ipr_cmd->job_step = ipr_ioa_reset_done;
4115 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
4116 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
4119 ipr_cmd->u.res = res;
4120 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4122 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4123 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4124 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4126 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4127 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4128 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4130 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4131 sizeof(struct ipr_supported_device));
4132 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4133 offsetof(struct ipr_misc_cbs, supp_dev));
4134 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4135 ioarcb->write_data_transfer_length =
4136 cpu_to_be32(sizeof(struct ipr_supported_device));
4138 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4139 IPR_SET_SUP_DEVICE_TIMEOUT);
4141 ipr_cmd->job_step = ipr_set_supported_devs;
4142 return IPR_RC_JOB_RETURN;
4145 return IPR_RC_JOB_CONTINUE;
4149 * ipr_get_mode_page - Locate specified mode page
4150 * @mode_pages: mode page buffer
4151 * @page_code: page code to find
4152 * @len: minimum required length for mode page
4155 * pointer to mode page / NULL on failure
4157 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4158 u32 page_code, u32 len)
4160 struct ipr_mode_page_hdr *mode_hdr;
4164 if (!mode_pages || (mode_pages->hdr.length == 0))
4167 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4168 mode_hdr = (struct ipr_mode_page_hdr *)
4169 (mode_pages->data + mode_pages->hdr.block_desc_len);
4172 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4173 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4177 page_length = (sizeof(struct ipr_mode_page_hdr) +
4178 mode_hdr->page_length);
4179 length -= page_length;
4180 mode_hdr = (struct ipr_mode_page_hdr *)
4181 ((unsigned long)mode_hdr + page_length);
4188 * ipr_check_term_power - Check for term power errors
4189 * @ioa_cfg: ioa config struct
4190 * @mode_pages: IOAFP mode pages buffer
4192 * Check the IOAFP's mode page 28 for term power errors
4197 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4198 struct ipr_mode_pages *mode_pages)
4202 struct ipr_dev_bus_entry *bus;
4203 struct ipr_mode_page28 *mode_page;
4205 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4206 sizeof(struct ipr_mode_page28));
4208 entry_length = mode_page->entry_length;
4210 bus = mode_page->bus;
4212 for (i = 0; i < mode_page->num_entries; i++) {
4213 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4214 dev_err(&ioa_cfg->pdev->dev,
4215 "Term power is absent on scsi bus %d\n",
4219 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4224 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4225 * @ioa_cfg: ioa config struct
4227 * Looks through the config table checking for SES devices. If
4228 * the SES device is in the SES table indicating a maximum SCSI
4229 * bus speed, the speed is limited for the bus.
4234 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4239 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4240 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4241 ioa_cfg->bus_attr[i].bus_width);
4243 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4244 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4249 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4250 * @ioa_cfg: ioa config struct
4251 * @mode_pages: mode page 28 buffer
4253 * Updates mode page 28 based on driver configuration
4258 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4259 struct ipr_mode_pages *mode_pages)
4261 int i, entry_length;
4262 struct ipr_dev_bus_entry *bus;
4263 struct ipr_bus_attributes *bus_attr;
4264 struct ipr_mode_page28 *mode_page;
4266 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4267 sizeof(struct ipr_mode_page28));
4269 entry_length = mode_page->entry_length;
4271 /* Loop for each device bus entry */
4272 for (i = 0, bus = mode_page->bus;
4273 i < mode_page->num_entries;
4274 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4275 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4276 dev_err(&ioa_cfg->pdev->dev,
4277 "Invalid resource address reported: 0x%08X\n",
4278 IPR_GET_PHYS_LOC(bus->res_addr));
4282 bus_attr = &ioa_cfg->bus_attr[i];
4283 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4284 bus->bus_width = bus_attr->bus_width;
4285 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4286 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4287 if (bus_attr->qas_enabled)
4288 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4290 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4295 * ipr_build_mode_select - Build a mode select command
4296 * @ipr_cmd: ipr command struct
4297 * @res_handle: resource handle to send command to
4298 * @parm: Byte 2 of Mode Sense command
4299 * @dma_addr: DMA buffer address
4300 * @xfer_len: data transfer length
4305 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4306 __be32 res_handle, u8 parm, u32 dma_addr,
4309 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4310 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4312 ioarcb->res_handle = res_handle;
4313 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4314 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4315 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4316 ioarcb->cmd_pkt.cdb[1] = parm;
4317 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4319 ioadl->flags_and_data_len =
4320 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4321 ioadl->address = cpu_to_be32(dma_addr);
4322 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4323 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4327 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4328 * @ipr_cmd: ipr command struct
4330 * This function sets up the SCSI bus attributes and sends
4331 * a Mode Select for Page 28 to activate them.
4336 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4339 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4343 if (ioa_cfg->saved_mode_pages) {
4344 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4345 ioa_cfg->saved_mode_page_len);
4346 length = ioa_cfg->saved_mode_page_len;
4348 ipr_scsi_bus_speed_limit(ioa_cfg);
4349 ipr_check_term_power(ioa_cfg, mode_pages);
4350 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4351 length = mode_pages->hdr.length + 1;
4352 mode_pages->hdr.length = 0;
4355 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4356 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4359 ipr_cmd->job_step = ipr_set_supported_devs;
4360 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4361 struct ipr_resource_entry, queue);
4363 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4366 return IPR_RC_JOB_RETURN;
4370 * ipr_build_mode_sense - Builds a mode sense command
4371 * @ipr_cmd: ipr command struct
4372 * @res: resource entry struct
4373 * @parm: Byte 2 of mode sense command
4374 * @dma_addr: DMA address of mode sense buffer
4375 * @xfer_len: Size of DMA buffer
4380 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4382 u8 parm, u32 dma_addr, u8 xfer_len)
4384 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4385 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4387 ioarcb->res_handle = res_handle;
4388 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4389 ioarcb->cmd_pkt.cdb[2] = parm;
4390 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4391 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4393 ioadl->flags_and_data_len =
4394 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4395 ioadl->address = cpu_to_be32(dma_addr);
4396 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4397 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4401 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4402 * @ipr_cmd: ipr command struct
4404 * This function send a Page 28 mode sense to the IOA to
4405 * retrieve SCSI bus attributes.
4410 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4412 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4415 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4416 0x28, ioa_cfg->vpd_cbs_dma +
4417 offsetof(struct ipr_misc_cbs, mode_pages),
4418 sizeof(struct ipr_mode_pages));
4420 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4422 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4425 return IPR_RC_JOB_RETURN;
4429 * ipr_init_res_table - Initialize the resource table
4430 * @ipr_cmd: ipr command struct
4432 * This function looks through the existing resource table, comparing
4433 * it with the config table. This function will take care of old/new
4434 * devices and schedule adding/removing them from the mid-layer
4438 * IPR_RC_JOB_CONTINUE
4440 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4443 struct ipr_resource_entry *res, *temp;
4444 struct ipr_config_table_entry *cfgte;
4449 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4450 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4452 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4453 list_move_tail(&res->queue, &old_res);
4455 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4456 cfgte = &ioa_cfg->cfg_table->dev[i];
4459 list_for_each_entry_safe(res, temp, &old_res, queue) {
4460 if (!memcmp(&res->cfgte.res_addr,
4461 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4462 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4469 if (list_empty(&ioa_cfg->free_res_q)) {
4470 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4475 res = list_entry(ioa_cfg->free_res_q.next,
4476 struct ipr_resource_entry, queue);
4477 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4478 ipr_init_res_entry(res);
4483 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4486 list_for_each_entry_safe(res, temp, &old_res, queue) {
4488 res->del_from_ml = 1;
4489 res->sdev->hostdata = NULL;
4490 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4492 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4496 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4499 return IPR_RC_JOB_CONTINUE;
4503 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4504 * @ipr_cmd: ipr command struct
4506 * This function sends a Query IOA Configuration command
4507 * to the adapter to retrieve the IOA configuration table.
4512 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4515 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4516 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4517 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4520 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4521 ucode_vpd->major_release, ucode_vpd->card_type,
4522 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4523 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4524 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4526 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4527 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4528 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4530 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4531 ioarcb->read_data_transfer_length =
4532 cpu_to_be32(sizeof(struct ipr_config_table));
4534 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4535 ioadl->flags_and_data_len =
4536 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4538 ipr_cmd->job_step = ipr_init_res_table;
4540 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4543 return IPR_RC_JOB_RETURN;
4547 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4548 * @ipr_cmd: ipr command struct
4550 * This utility function sends an inquiry to the adapter.
4555 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4556 u32 dma_addr, u8 xfer_len)
4558 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4559 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4562 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4563 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4565 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4566 ioarcb->cmd_pkt.cdb[1] = flags;
4567 ioarcb->cmd_pkt.cdb[2] = page;
4568 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4570 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4571 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4573 ioadl->address = cpu_to_be32(dma_addr);
4574 ioadl->flags_and_data_len =
4575 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4577 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4582 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4583 * @ipr_cmd: ipr command struct
4585 * This function sends a Page 3 inquiry to the adapter
4586 * to retrieve software VPD information.
4589 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4591 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4593 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4598 /* Grab the type out of the VPD and store it away */
4599 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4601 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4603 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4605 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4606 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4607 sizeof(struct ipr_inquiry_page3));
4610 return IPR_RC_JOB_RETURN;
4614 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4615 * @ipr_cmd: ipr command struct
4617 * This function sends a standard inquiry to the adapter.
4622 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4627 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4629 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4630 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4631 sizeof(struct ipr_ioa_vpd));
4634 return IPR_RC_JOB_RETURN;
4638 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4639 * @ipr_cmd: ipr command struct
4641 * This function send an Identify Host Request Response Queue
4642 * command to establish the HRRQ with the adapter.
4647 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4650 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4653 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4655 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4656 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4658 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4659 ioarcb->cmd_pkt.cdb[2] =
4660 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4661 ioarcb->cmd_pkt.cdb[3] =
4662 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4663 ioarcb->cmd_pkt.cdb[4] =
4664 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4665 ioarcb->cmd_pkt.cdb[5] =
4666 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4667 ioarcb->cmd_pkt.cdb[7] =
4668 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4669 ioarcb->cmd_pkt.cdb[8] =
4670 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4672 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4674 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4677 return IPR_RC_JOB_RETURN;
4681 * ipr_reset_timer_done - Adapter reset timer function
4682 * @ipr_cmd: ipr command struct
4684 * Description: This function is used in adapter reset processing
4685 * for timing events. If the reset_cmd pointer in the IOA
4686 * config struct is not this adapter's we are doing nested
4687 * resets and fail_all_ops will take care of freeing the
4693 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4696 unsigned long lock_flags = 0;
4698 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4700 if (ioa_cfg->reset_cmd == ipr_cmd) {
4701 list_del(&ipr_cmd->queue);
4702 ipr_cmd->done(ipr_cmd);
4705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4709 * ipr_reset_start_timer - Start a timer for adapter reset job
4710 * @ipr_cmd: ipr command struct
4711 * @timeout: timeout value
4713 * Description: This function is used in adapter reset processing
4714 * for timing events. If the reset_cmd pointer in the IOA
4715 * config struct is not this adapter's we are doing nested
4716 * resets and fail_all_ops will take care of freeing the
4722 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4723 unsigned long timeout)
4725 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4726 ipr_cmd->done = ipr_reset_ioa_job;
4728 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4729 ipr_cmd->timer.expires = jiffies + timeout;
4730 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4731 add_timer(&ipr_cmd->timer);
4735 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4736 * @ioa_cfg: ioa cfg struct
4741 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4743 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4745 /* Initialize Host RRQ pointers */
4746 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4747 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4748 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4749 ioa_cfg->toggle_bit = 1;
4751 /* Zero out config table */
4752 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4756 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4757 * @ipr_cmd: ipr command struct
4759 * This function reinitializes some control blocks and
4760 * enables destructive diagnostics on the adapter.
4765 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4768 volatile u32 int_reg;
4771 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4772 ipr_init_ioa_mem(ioa_cfg);
4774 ioa_cfg->allow_interrupts = 1;
4775 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4777 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4778 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4779 ioa_cfg->regs.clr_interrupt_mask_reg);
4780 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4781 return IPR_RC_JOB_CONTINUE;
4784 /* Enable destructive diagnostics on IOA */
4785 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4787 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4788 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4790 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4792 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4793 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4794 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4795 ipr_cmd->done = ipr_reset_ioa_job;
4796 add_timer(&ipr_cmd->timer);
4797 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4800 return IPR_RC_JOB_RETURN;
4804 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4805 * @ipr_cmd: ipr command struct
4807 * This function is invoked when an adapter dump has run out
4808 * of processing time.
4811 * IPR_RC_JOB_CONTINUE
4813 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4817 if (ioa_cfg->sdt_state == GET_DUMP)
4818 ioa_cfg->sdt_state = ABORT_DUMP;
4820 ipr_cmd->job_step = ipr_reset_alert;
4822 return IPR_RC_JOB_CONTINUE;
4826 * ipr_unit_check_no_data - Log a unit check/no data error log
4827 * @ioa_cfg: ioa config struct
4829 * Logs an error indicating the adapter unit checked, but for some
4830 * reason, we were unable to fetch the unit check buffer.
4835 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4837 ioa_cfg->errors_logged++;
4838 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4842 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4843 * @ioa_cfg: ioa config struct
4845 * Fetches the unit check buffer from the adapter by clocking the data
4846 * through the mailbox register.
4851 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4853 unsigned long mailbox;
4854 struct ipr_hostrcb *hostrcb;
4855 struct ipr_uc_sdt sdt;
4858 mailbox = readl(ioa_cfg->ioa_mailbox);
4860 if (!ipr_sdt_is_fmt2(mailbox)) {
4861 ipr_unit_check_no_data(ioa_cfg);
4865 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4866 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4867 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4869 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4870 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4871 ipr_unit_check_no_data(ioa_cfg);
4875 /* Find length of the first sdt entry (UC buffer) */
4876 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4877 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4879 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4880 struct ipr_hostrcb, queue);
4881 list_del(&hostrcb->queue);
4882 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4884 rc = ipr_get_ldump_data_section(ioa_cfg,
4885 be32_to_cpu(sdt.entry[0].bar_str_offset),
4886 (__be32 *)&hostrcb->hcam,
4887 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4890 ipr_handle_log_data(ioa_cfg, hostrcb);
4892 ipr_unit_check_no_data(ioa_cfg);
4894 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4898 * ipr_reset_restore_cfg_space - Restore PCI config space.
4899 * @ipr_cmd: ipr command struct
4901 * Description: This function restores the saved PCI config space of
4902 * the adapter, fails all outstanding ops back to the callers, and
4903 * fetches the dump/unit check if applicable to this reset.
4906 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4908 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4910 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4914 pci_unblock_user_cfg_access(ioa_cfg->pdev);
4915 rc = pci_restore_state(ioa_cfg->pdev);
4917 if (rc != PCIBIOS_SUCCESSFUL) {
4918 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4919 return IPR_RC_JOB_CONTINUE;
4922 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4923 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4924 return IPR_RC_JOB_CONTINUE;
4927 ipr_fail_all_ops(ioa_cfg);
4929 if (ioa_cfg->ioa_unit_checked) {
4930 ioa_cfg->ioa_unit_checked = 0;
4931 ipr_get_unit_check_buffer(ioa_cfg);
4932 ipr_cmd->job_step = ipr_reset_alert;
4933 ipr_reset_start_timer(ipr_cmd, 0);
4934 return IPR_RC_JOB_RETURN;
4937 if (ioa_cfg->in_ioa_bringdown) {
4938 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4940 ipr_cmd->job_step = ipr_reset_enable_ioa;
4942 if (GET_DUMP == ioa_cfg->sdt_state) {
4943 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4944 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4945 schedule_work(&ioa_cfg->work_q);
4946 return IPR_RC_JOB_RETURN;
4951 return IPR_RC_JOB_CONTINUE;
4955 * ipr_reset_start_bist - Run BIST on the adapter.
4956 * @ipr_cmd: ipr command struct
4958 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4961 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4963 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4965 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4969 pci_block_user_cfg_access(ioa_cfg->pdev);
4970 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
4972 if (rc != PCIBIOS_SUCCESSFUL) {
4973 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4974 rc = IPR_RC_JOB_CONTINUE;
4976 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
4977 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
4978 rc = IPR_RC_JOB_RETURN;
4986 * ipr_reset_allowed - Query whether or not IOA can be reset
4987 * @ioa_cfg: ioa config struct
4990 * 0 if reset not allowed / non-zero if reset is allowed
4992 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
4994 volatile u32 temp_reg;
4996 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4997 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5001 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5002 * @ipr_cmd: ipr command struct
5004 * Description: This function waits for adapter permission to run BIST,
5005 * then runs BIST. If the adapter does not give permission after a
5006 * reasonable time, we will reset the adapter anyway. The impact of
5007 * resetting the adapter without warning the adapter is the risk of
5008 * losing the persistent error log on the adapter. If the adapter is
5009 * reset while it is writing to the flash on the adapter, the flash
5010 * segment will have bad ECC and be zeroed.
5013 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5015 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5017 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5018 int rc = IPR_RC_JOB_RETURN;
5020 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5021 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5022 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5024 ipr_cmd->job_step = ipr_reset_start_bist;
5025 rc = IPR_RC_JOB_CONTINUE;
5032 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5033 * @ipr_cmd: ipr command struct
5035 * Description: This function alerts the adapter that it will be reset.
5036 * If memory space is not currently enabled, proceed directly
5037 * to running BIST on the adapter. The timer must always be started
5038 * so we guarantee we do not run BIST from ipr_isr.
5043 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5050 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5052 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5053 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5054 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5055 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5057 ipr_cmd->job_step = ipr_reset_start_bist;
5060 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5061 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5064 return IPR_RC_JOB_RETURN;
5068 * ipr_reset_ucode_download_done - Microcode download completion
5069 * @ipr_cmd: ipr command struct
5071 * Description: This function unmaps the microcode download buffer.
5074 * IPR_RC_JOB_CONTINUE
5076 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5078 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5079 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5081 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5082 sglist->num_sg, DMA_TO_DEVICE);
5084 ipr_cmd->job_step = ipr_reset_alert;
5085 return IPR_RC_JOB_CONTINUE;
5089 * ipr_reset_ucode_download - Download microcode to the adapter
5090 * @ipr_cmd: ipr command struct
5092 * Description: This function checks to see if it there is microcode
5093 * to download to the adapter. If there is, a download is performed.
5096 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5098 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5100 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5101 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5104 ipr_cmd->job_step = ipr_reset_alert;
5107 return IPR_RC_JOB_CONTINUE;
5109 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5110 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5111 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5112 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5113 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5114 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5115 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5117 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5118 dev_err(&ioa_cfg->pdev->dev,
5119 "Failed to map microcode download buffer\n");
5120 return IPR_RC_JOB_CONTINUE;
5123 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5125 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5126 IPR_WRITE_BUFFER_TIMEOUT);
5129 return IPR_RC_JOB_RETURN;
5133 * ipr_reset_shutdown_ioa - Shutdown the adapter
5134 * @ipr_cmd: ipr command struct
5136 * Description: This function issues an adapter shutdown of the
5137 * specified type to the specified adapter as part of the
5138 * adapter reset job.
5141 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5143 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5145 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5146 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5147 unsigned long timeout;
5148 int rc = IPR_RC_JOB_CONTINUE;
5151 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5152 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5153 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5154 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5155 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5157 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5158 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5159 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5160 timeout = IPR_INTERNAL_TIMEOUT;
5162 timeout = IPR_SHUTDOWN_TIMEOUT;
5164 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5166 rc = IPR_RC_JOB_RETURN;
5167 ipr_cmd->job_step = ipr_reset_ucode_download;
5169 ipr_cmd->job_step = ipr_reset_alert;
5176 * ipr_reset_ioa_job - Adapter reset job
5177 * @ipr_cmd: ipr command struct
5179 * Description: This function is the job router for the adapter reset job.
5184 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5187 unsigned long scratch = ipr_cmd->u.scratch;
5188 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5191 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5193 if (ioa_cfg->reset_cmd != ipr_cmd) {
5195 * We are doing nested adapter resets and this is
5196 * not the current reset job.
5198 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5202 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5203 dev_err(&ioa_cfg->pdev->dev,
5204 "0x%02X failed with IOASC: 0x%08X\n",
5205 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5207 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5208 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5212 ipr_reinit_ipr_cmnd(ipr_cmd);
5213 ipr_cmd->u.scratch = scratch;
5214 rc = ipr_cmd->job_step(ipr_cmd);
5215 } while(rc == IPR_RC_JOB_CONTINUE);
5219 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5220 * @ioa_cfg: ioa config struct
5221 * @job_step: first job step of reset job
5222 * @shutdown_type: shutdown type
5224 * Description: This function will initiate the reset of the given adapter
5225 * starting at the selected job step.
5226 * If the caller needs to wait on the completion of the reset,
5227 * the caller must sleep on the reset_wait_q.
5232 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5233 int (*job_step) (struct ipr_cmnd *),
5234 enum ipr_shutdown_type shutdown_type)
5236 struct ipr_cmnd *ipr_cmd;
5238 ioa_cfg->in_reset_reload = 1;
5239 ioa_cfg->allow_cmds = 0;
5240 scsi_block_requests(ioa_cfg->host);
5242 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5243 ioa_cfg->reset_cmd = ipr_cmd;
5244 ipr_cmd->job_step = job_step;
5245 ipr_cmd->u.shutdown_type = shutdown_type;
5247 ipr_reset_ioa_job(ipr_cmd);
5251 * ipr_initiate_ioa_reset - Initiate an adapter reset
5252 * @ioa_cfg: ioa config struct
5253 * @shutdown_type: shutdown type
5255 * Description: This function will initiate the reset of the given adapter.
5256 * If the caller needs to wait on the completion of the reset,
5257 * the caller must sleep on the reset_wait_q.
5262 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5263 enum ipr_shutdown_type shutdown_type)
5265 if (ioa_cfg->ioa_is_dead)
5268 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5269 ioa_cfg->sdt_state = ABORT_DUMP;
5271 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5272 dev_err(&ioa_cfg->pdev->dev,
5273 "IOA taken offline - error recovery failed\n");
5275 ioa_cfg->reset_retries = 0;
5276 ioa_cfg->ioa_is_dead = 1;
5278 if (ioa_cfg->in_ioa_bringdown) {
5279 ioa_cfg->reset_cmd = NULL;
5280 ioa_cfg->in_reset_reload = 0;
5281 ipr_fail_all_ops(ioa_cfg);
5282 wake_up_all(&ioa_cfg->reset_wait_q);
5284 spin_unlock_irq(ioa_cfg->host->host_lock);
5285 scsi_unblock_requests(ioa_cfg->host);
5286 spin_lock_irq(ioa_cfg->host->host_lock);
5289 ioa_cfg->in_ioa_bringdown = 1;
5290 shutdown_type = IPR_SHUTDOWN_NONE;
5294 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5299 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5300 * @ioa_cfg: ioa cfg struct
5302 * Description: This is the second phase of adapter intialization
5303 * This function takes care of initilizing the adapter to the point
5304 * where it can accept new commands.
5307 * 0 on sucess / -EIO on failure
5309 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5312 unsigned long host_lock_flags = 0;
5315 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5316 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5317 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5320 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5321 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5323 if (ioa_cfg->ioa_is_dead) {
5325 } else if (ipr_invalid_adapter(ioa_cfg)) {
5329 dev_err(&ioa_cfg->pdev->dev,
5330 "Adapter not supported in this hardware configuration.\n");
5333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5340 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5341 * @ioa_cfg: ioa config struct
5346 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5350 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5351 if (ioa_cfg->ipr_cmnd_list[i])
5352 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5353 ioa_cfg->ipr_cmnd_list[i],
5354 ioa_cfg->ipr_cmnd_list_dma[i]);
5356 ioa_cfg->ipr_cmnd_list[i] = NULL;
5359 if (ioa_cfg->ipr_cmd_pool)
5360 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5362 ioa_cfg->ipr_cmd_pool = NULL;
5366 * ipr_free_mem - Frees memory allocated for an adapter
5367 * @ioa_cfg: ioa cfg struct
5372 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5376 kfree(ioa_cfg->res_entries);
5377 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5378 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5379 ipr_free_cmd_blks(ioa_cfg);
5380 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5381 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5382 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5384 ioa_cfg->cfg_table_dma);
5386 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5387 pci_free_consistent(ioa_cfg->pdev,
5388 sizeof(struct ipr_hostrcb),
5389 ioa_cfg->hostrcb[i],
5390 ioa_cfg->hostrcb_dma[i]);
5393 ipr_free_dump(ioa_cfg);
5394 kfree(ioa_cfg->saved_mode_pages);
5395 kfree(ioa_cfg->trace);
5399 * ipr_free_all_resources - Free all allocated resources for an adapter.
5400 * @ipr_cmd: ipr command struct
5402 * This function frees all allocated resources for the
5403 * specified adapter.
5408 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5410 struct pci_dev *pdev = ioa_cfg->pdev;
5413 free_irq(pdev->irq, ioa_cfg);
5414 iounmap(ioa_cfg->hdw_dma_regs);
5415 pci_release_regions(pdev);
5416 ipr_free_mem(ioa_cfg);
5417 scsi_host_put(ioa_cfg->host);
5418 pci_disable_device(pdev);
5423 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5424 * @ioa_cfg: ioa config struct
5427 * 0 on success / -ENOMEM on allocation failure
5429 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5431 struct ipr_cmnd *ipr_cmd;
5432 struct ipr_ioarcb *ioarcb;
5433 dma_addr_t dma_addr;
5436 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5437 sizeof(struct ipr_cmnd), 8, 0);
5439 if (!ioa_cfg->ipr_cmd_pool)
5442 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5443 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5446 ipr_free_cmd_blks(ioa_cfg);
5450 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5451 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5452 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5454 ioarcb = &ipr_cmd->ioarcb;
5455 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5456 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5457 ioarcb->write_ioadl_addr =
5458 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5459 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5460 ioarcb->ioasa_host_pci_addr =
5461 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5462 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5463 ipr_cmd->cmd_index = i;
5464 ipr_cmd->ioa_cfg = ioa_cfg;
5465 ipr_cmd->sense_buffer_dma = dma_addr +
5466 offsetof(struct ipr_cmnd, sense_buffer);
5468 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5475 * ipr_alloc_mem - Allocate memory for an adapter
5476 * @ioa_cfg: ioa config struct
5479 * 0 on success / non-zero for error
5481 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5483 struct pci_dev *pdev = ioa_cfg->pdev;
5484 int i, rc = -ENOMEM;
5487 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5488 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5490 if (!ioa_cfg->res_entries)
5493 memset(ioa_cfg->res_entries, 0,
5494 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5496 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5497 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5499 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5500 sizeof(struct ipr_misc_cbs),
5501 &ioa_cfg->vpd_cbs_dma);
5503 if (!ioa_cfg->vpd_cbs)
5504 goto out_free_res_entries;
5506 if (ipr_alloc_cmd_blks(ioa_cfg))
5507 goto out_free_vpd_cbs;
5509 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5510 sizeof(u32) * IPR_NUM_CMD_BLKS,
5511 &ioa_cfg->host_rrq_dma);
5513 if (!ioa_cfg->host_rrq)
5514 goto out_ipr_free_cmd_blocks;
5516 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5517 sizeof(struct ipr_config_table),
5518 &ioa_cfg->cfg_table_dma);
5520 if (!ioa_cfg->cfg_table)
5521 goto out_free_host_rrq;
5523 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5524 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5525 sizeof(struct ipr_hostrcb),
5526 &ioa_cfg->hostrcb_dma[i]);
5528 if (!ioa_cfg->hostrcb[i])
5529 goto out_free_hostrcb_dma;
5531 ioa_cfg->hostrcb[i]->hostrcb_dma =
5532 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5533 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5536 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5537 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5539 if (!ioa_cfg->trace)
5540 goto out_free_hostrcb_dma;
5542 memset(ioa_cfg->trace, 0,
5543 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5550 out_free_hostrcb_dma:
5552 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5553 ioa_cfg->hostrcb[i],
5554 ioa_cfg->hostrcb_dma[i]);
5556 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5557 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5559 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5560 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5561 out_ipr_free_cmd_blocks:
5562 ipr_free_cmd_blks(ioa_cfg);
5564 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5565 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5566 out_free_res_entries:
5567 kfree(ioa_cfg->res_entries);
5572 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5573 * @ioa_cfg: ioa config struct
5578 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5582 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5583 ioa_cfg->bus_attr[i].bus = i;
5584 ioa_cfg->bus_attr[i].qas_enabled = 0;
5585 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5586 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5587 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5589 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5594 * ipr_init_ioa_cfg - Initialize IOA config struct
5595 * @ioa_cfg: ioa config struct
5596 * @host: scsi host struct
5597 * @pdev: PCI dev struct
5602 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5603 struct Scsi_Host *host, struct pci_dev *pdev)
5605 const struct ipr_interrupt_offsets *p;
5606 struct ipr_interrupts *t;
5609 ioa_cfg->host = host;
5610 ioa_cfg->pdev = pdev;
5611 ioa_cfg->log_level = ipr_log_level;
5612 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5613 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5614 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5615 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5616 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5617 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5618 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5619 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5621 INIT_LIST_HEAD(&ioa_cfg->free_q);
5622 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5623 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5624 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5625 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5626 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5627 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5628 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5629 ioa_cfg->sdt_state = INACTIVE;
5631 ipr_initialize_bus_attr(ioa_cfg);
5633 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5634 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5635 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5636 host->unique_id = host->host_no;
5637 host->max_cmd_len = IPR_MAX_CDB_LEN;
5638 pci_set_drvdata(pdev, ioa_cfg);
5640 p = &ioa_cfg->chip_cfg->regs;
5642 base = ioa_cfg->hdw_dma_regs;
5644 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5645 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5646 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5647 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5648 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5649 t->ioarrin_reg = base + p->ioarrin_reg;
5650 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5651 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5652 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5656 * ipr_get_chip_cfg - Find adapter chip configuration
5657 * @dev_id: PCI device id struct
5660 * ptr to chip config on success / NULL on failure
5662 static const struct ipr_chip_cfg_t * __devinit
5663 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5667 if (dev_id->driver_data)
5668 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5670 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5671 if (ipr_chip[i].vendor == dev_id->vendor &&
5672 ipr_chip[i].device == dev_id->device)
5673 return ipr_chip[i].cfg;
5678 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5679 * @pdev: PCI device struct
5680 * @dev_id: PCI device id struct
5683 * 0 on success / non-zero on failure
5685 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5686 const struct pci_device_id *dev_id)
5688 struct ipr_ioa_cfg *ioa_cfg;
5689 struct Scsi_Host *host;
5690 unsigned long ipr_regs_pci;
5691 void __iomem *ipr_regs;
5692 u32 rc = PCIBIOS_SUCCESSFUL;
5696 if ((rc = pci_enable_device(pdev))) {
5697 dev_err(&pdev->dev, "Cannot enable adapter\n");
5701 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5703 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5706 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5711 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5712 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5714 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5716 if (!ioa_cfg->chip_cfg) {
5717 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5718 dev_id->vendor, dev_id->device);
5719 goto out_scsi_host_put;
5722 ipr_regs_pci = pci_resource_start(pdev, 0);
5724 rc = pci_request_regions(pdev, IPR_NAME);
5727 "Couldn't register memory range of registers\n");
5728 goto out_scsi_host_put;
5731 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5735 "Couldn't map memory range of registers\n");
5737 goto out_release_regions;
5740 ioa_cfg->hdw_dma_regs = ipr_regs;
5741 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5742 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5744 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5746 pci_set_master(pdev);
5748 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5750 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5754 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5755 ioa_cfg->chip_cfg->cache_line_size);
5757 if (rc != PCIBIOS_SUCCESSFUL) {
5758 dev_err(&pdev->dev, "Write of cache line size failed\n");
5763 /* Save away PCI config space for use following IOA reset */
5764 rc = pci_save_state(pdev);
5766 if (rc != PCIBIOS_SUCCESSFUL) {
5767 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5772 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5775 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5778 rc = ipr_alloc_mem(ioa_cfg);
5781 "Couldn't allocate enough memory for device driver!\n");
5785 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5786 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5789 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5794 spin_lock(&ipr_driver_lock);
5795 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5796 spin_unlock(&ipr_driver_lock);
5803 ipr_free_mem(ioa_cfg);
5806 out_release_regions:
5807 pci_release_regions(pdev);
5809 scsi_host_put(host);
5811 pci_disable_device(pdev);
5816 * ipr_scan_vsets - Scans for VSET devices
5817 * @ioa_cfg: ioa config struct
5819 * Description: Since the VSET resources do not follow SAM in that we can have
5820 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5825 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5829 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5830 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5831 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5835 * ipr_initiate_ioa_bringdown - Bring down an adapter
5836 * @ioa_cfg: ioa config struct
5837 * @shutdown_type: shutdown type
5839 * Description: This function will initiate bringing down the adapter.
5840 * This consists of issuing an IOA shutdown to the adapter
5841 * to flush the cache, and running BIST.
5842 * If the caller needs to wait on the completion of the reset,
5843 * the caller must sleep on the reset_wait_q.
5848 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5849 enum ipr_shutdown_type shutdown_type)
5852 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5853 ioa_cfg->sdt_state = ABORT_DUMP;
5854 ioa_cfg->reset_retries = 0;
5855 ioa_cfg->in_ioa_bringdown = 1;
5856 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5861 * __ipr_remove - Remove a single adapter
5862 * @pdev: pci device struct
5864 * Adapter hot plug remove entry point.
5869 static void __ipr_remove(struct pci_dev *pdev)
5871 unsigned long host_lock_flags = 0;
5872 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5875 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5876 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5879 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5880 flush_scheduled_work();
5881 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5883 spin_lock(&ipr_driver_lock);
5884 list_del(&ioa_cfg->queue);
5885 spin_unlock(&ipr_driver_lock);
5887 if (ioa_cfg->sdt_state == ABORT_DUMP)
5888 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5889 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5891 ipr_free_all_resources(ioa_cfg);
5897 * ipr_remove - IOA hot plug remove entry point
5898 * @pdev: pci device struct
5900 * Adapter hot plug remove entry point.
5905 static void ipr_remove(struct pci_dev *pdev)
5907 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5911 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5913 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5915 scsi_remove_host(ioa_cfg->host);
5923 * ipr_probe - Adapter hot plug add entry point
5926 * 0 on success / non-zero on failure
5928 static int __devinit ipr_probe(struct pci_dev *pdev,
5929 const struct pci_device_id *dev_id)
5931 struct ipr_ioa_cfg *ioa_cfg;
5934 rc = ipr_probe_ioa(pdev, dev_id);
5939 ioa_cfg = pci_get_drvdata(pdev);
5940 rc = ipr_probe_ioa_part2(ioa_cfg);
5947 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5954 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5958 scsi_remove_host(ioa_cfg->host);
5963 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5967 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5969 scsi_remove_host(ioa_cfg->host);
5974 scsi_scan_host(ioa_cfg->host);
5975 ipr_scan_vsets(ioa_cfg);
5976 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
5977 ioa_cfg->allow_ml_add_del = 1;
5978 ioa_cfg->host->max_channel = IPR_VSET_BUS;
5979 schedule_work(&ioa_cfg->work_q);
5984 * ipr_shutdown - Shutdown handler.
5985 * @pdev: pci device struct
5987 * This function is invoked upon system shutdown/reboot. It will issue
5988 * an adapter shutdown to the adapter to flush the write cache.
5993 static void ipr_shutdown(struct pci_dev *pdev)
5995 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5996 unsigned long lock_flags = 0;
5998 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5999 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6000 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6001 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6004 static struct pci_device_id ipr_pci_table[] __devinitdata = {
6005 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6007 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6008 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6009 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6010 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6011 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6013 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6014 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6015 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6016 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6017 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6018 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6019 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6020 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6021 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6022 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6023 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6024 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6025 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6028 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6029 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6031 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6034 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6036 static struct pci_driver ipr_driver = {
6038 .id_table = ipr_pci_table,
6040 .remove = ipr_remove,
6041 .shutdown = ipr_shutdown,
6045 * ipr_init - Module entry point
6048 * 0 on success / negative value on failure
6050 static int __init ipr_init(void)
6052 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6053 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6055 return pci_module_init(&ipr_driver);
6059 * ipr_exit - Module unload
6061 * Module unload entry point.
6066 static void __exit ipr_exit(void)
6068 pci_unregister_driver(&ipr_driver);
6071 module_init(ipr_init);
6072 module_exit(ipr_exit);