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
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.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>
87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static int ipr_auto_create = 1;
96 static DEFINE_SPINLOCK(ipr_driver_lock);
98 /* This table describes the differences between DMA controller chips */
99 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
102 .cache_line_size = 0x20,
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
115 { /* Snipe and Scamp */
117 .cache_line_size = 0x20,
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
132 static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
142 static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
146 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148 module_param_named(max_speed, ipr_max_speed, uint, 0);
149 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150 module_param_named(log_level, ipr_log_level, uint, 0);
151 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152 module_param_named(testmode, ipr_testmode, int, 0);
153 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154 module_param_named(fastfail, ipr_fastfail, int, 0);
155 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
158 module_param_named(enable_cache, ipr_enable_cache, int, 0);
159 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
160 module_param_named(debug, ipr_debug, int, 0);
161 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
162 module_param_named(auto_create, ipr_auto_create, int, 0);
163 MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
164 MODULE_LICENSE("GPL");
165 MODULE_VERSION(IPR_DRIVER_VERSION);
167 /* A constant array of IOASCs/URCs/Error Messages */
169 struct ipr_error_table_t ipr_error_table[] = {
171 "8155: An unknown error was received"},
173 "Soft underlength error"},
175 "Command to be cancelled not found"},
177 "Qualified success"},
179 "FFFE: Soft device bus error recovered by the IOA"},
181 "4101: Soft device bus fabric error"},
183 "FFF9: Device sector reassign successful"},
185 "FFF7: Media error recovered by device rewrite procedures"},
187 "7001: IOA sector reassignment successful"},
189 "FFF9: Soft media error. Sector reassignment recommended"},
191 "FFF7: Media error recovered by IOA rewrite procedures"},
193 "FF3D: Soft PCI bus error recovered by the IOA"},
195 "FFF6: Device hardware error recovered by the IOA"},
197 "FFF6: Device hardware error recovered by the device"},
199 "FF3D: Soft IOA error recovered by the IOA"},
201 "FFFA: Undefined device response recovered by the IOA"},
203 "FFF6: Device bus error, message or command phase"},
205 "FFFE: Task Management Function failed"},
207 "FFF6: Failure prediction threshold exceeded"},
209 "8009: Impending cache battery pack failure"},
211 "34FF: Disk device format in progress"},
213 "Synchronization required"},
215 "No ready, IOA shutdown"},
217 "Not ready, IOA has been shutdown"},
219 "3020: Storage subsystem configuration error"},
221 "FFF5: Medium error, data unreadable, recommend reassign"},
223 "7000: Medium error, data unreadable, do not reassign"},
225 "FFF3: Disk media format bad"},
227 "3002: Addressed device failed to respond to selection"},
229 "3100: Device bus error"},
231 "3109: IOA timed out a device command"},
233 "3120: SCSI bus is not operational"},
235 "4100: Hard device bus fabric error"},
237 "9000: IOA reserved area data check"},
239 "9001: IOA reserved area invalid data pattern"},
241 "9002: IOA reserved area LRC error"},
243 "102E: Out of alternate sectors for disk storage"},
245 "FFF4: Data transfer underlength error"},
247 "FFF4: Data transfer overlength error"},
249 "3400: Logical unit failure"},
251 "FFF4: Device microcode is corrupt"},
253 "8150: PCI bus error"},
255 "Unsupported device bus message received"},
257 "FFF4: Disk device problem"},
259 "8150: Permanent IOA failure"},
261 "3010: Disk device returned wrong response to IOA"},
263 "8151: IOA microcode error"},
265 "Device bus status error"},
267 "8157: IOA error requiring IOA reset to recover"},
269 "ATA device status error"},
271 "Message reject received from the device"},
273 "8008: A permanent cache battery pack failure occurred"},
275 "9090: Disk unit has been modified after the last known status"},
277 "9081: IOA detected device error"},
279 "9082: IOA detected device error"},
281 "3110: Device bus error, message or command phase"},
283 "3110: SAS Command / Task Management Function failed"},
285 "9091: Incorrect hardware configuration change has been detected"},
287 "9073: Invalid multi-adapter configuration"},
289 "4010: Incorrect connection between cascaded expanders"},
291 "4020: Connections exceed IOA design limits"},
293 "4030: Incorrect multipath connection"},
295 "4110: Unsupported enclosure function"},
297 "FFF4: Command to logical unit failed"},
299 "Illegal request, invalid request type or request packet"},
301 "Illegal request, invalid resource handle"},
303 "Illegal request, commands not allowed to this device"},
305 "Illegal request, command not allowed to a secondary adapter"},
307 "Illegal request, invalid field in parameter list"},
309 "Illegal request, parameter not supported"},
311 "Illegal request, parameter value invalid"},
313 "Illegal request, command sequence error"},
315 "Illegal request, dual adapter support not enabled"},
317 "9031: Array protection temporarily suspended, protection resuming"},
319 "9040: Array protection temporarily suspended, protection resuming"},
321 "3140: Device bus not ready to ready transition"},
323 "FFFB: SCSI bus was reset"},
325 "FFFE: SCSI bus transition to single ended"},
327 "FFFE: SCSI bus transition to LVD"},
329 "FFFB: SCSI bus was reset by another initiator"},
331 "3029: A device replacement has occurred"},
333 "9051: IOA cache data exists for a missing or failed device"},
335 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
337 "9025: Disk unit is not supported at its physical location"},
339 "3020: IOA detected a SCSI bus configuration error"},
341 "3150: SCSI bus configuration error"},
343 "9074: Asymmetric advanced function disk configuration"},
345 "4040: Incomplete multipath connection between IOA and enclosure"},
347 "4041: Incomplete multipath connection between enclosure and device"},
349 "9075: Incomplete multipath connection between IOA and remote IOA"},
351 "9076: Configuration error, missing remote IOA"},
353 "4050: Enclosure does not support a required multipath function"},
355 "9041: Array protection temporarily suspended"},
357 "9042: Corrupt array parity detected on specified device"},
359 "9030: Array no longer protected due to missing or failed disk unit"},
361 "9071: Link operational transition"},
363 "9072: Link not operational transition"},
365 "9032: Array exposed but still protected"},
367 "4061: Multipath redundancy level got better"},
369 "4060: Multipath redundancy level got worse"},
371 "Failure due to other device"},
373 "9008: IOA does not support functions expected by devices"},
375 "9010: Cache data associated with attached devices cannot be found"},
377 "9011: Cache data belongs to devices other than those attached"},
379 "9020: Array missing 2 or more devices with only 1 device present"},
381 "9021: Array missing 2 or more devices with 2 or more devices present"},
383 "9022: Exposed array is missing a required device"},
385 "9023: Array member(s) not at required physical locations"},
387 "9024: Array not functional due to present hardware configuration"},
389 "9026: Array not functional due to present hardware configuration"},
391 "9027: Array is missing a device and parity is out of sync"},
393 "9028: Maximum number of arrays already exist"},
395 "9050: Required cache data cannot be located for a disk unit"},
397 "9052: Cache data exists for a device that has been modified"},
399 "9054: IOA resources not available due to previous problems"},
401 "9092: Disk unit requires initialization before use"},
403 "9029: Incorrect hardware configuration change has been detected"},
405 "9060: One or more disk pairs are missing from an array"},
407 "9061: One or more disks are missing from an array"},
409 "9062: One or more disks are missing from an array"},
411 "9063: Maximum number of functional arrays has been exceeded"},
413 "Aborted command, invalid descriptor"},
415 "Command terminated by host"}
418 static const struct ipr_ses_table_entry ipr_ses_table[] = {
419 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
420 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
421 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
422 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
423 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
424 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
425 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
426 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
427 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
429 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
431 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
435 * Function Prototypes
437 static int ipr_reset_alert(struct ipr_cmnd *);
438 static void ipr_process_ccn(struct ipr_cmnd *);
439 static void ipr_process_error(struct ipr_cmnd *);
440 static void ipr_reset_ioa_job(struct ipr_cmnd *);
441 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
442 enum ipr_shutdown_type);
444 #ifdef CONFIG_SCSI_IPR_TRACE
446 * ipr_trc_hook - Add a trace entry to the driver trace
447 * @ipr_cmd: ipr command struct
449 * @add_data: additional data
454 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
455 u8 type, u32 add_data)
457 struct ipr_trace_entry *trace_entry;
458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
460 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
461 trace_entry->time = jiffies;
462 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
463 trace_entry->type = type;
464 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
465 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
466 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
467 trace_entry->u.add_data = add_data;
470 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
474 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
475 * @ipr_cmd: ipr command struct
480 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
482 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
483 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
486 ioarcb->write_data_transfer_length = 0;
487 ioarcb->read_data_transfer_length = 0;
488 ioarcb->write_ioadl_len = 0;
489 ioarcb->read_ioadl_len = 0;
491 ioasa->residual_data_len = 0;
492 ioasa->u.gata.status = 0;
494 ipr_cmd->scsi_cmd = NULL;
496 ipr_cmd->sense_buffer[0] = 0;
497 ipr_cmd->dma_use_sg = 0;
501 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
502 * @ipr_cmd: ipr command struct
507 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
509 ipr_reinit_ipr_cmnd(ipr_cmd);
510 ipr_cmd->u.scratch = 0;
511 ipr_cmd->sibling = NULL;
512 init_timer(&ipr_cmd->timer);
516 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
517 * @ioa_cfg: ioa config struct
520 * pointer to ipr command struct
523 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
525 struct ipr_cmnd *ipr_cmd;
527 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
528 list_del(&ipr_cmd->queue);
529 ipr_init_ipr_cmnd(ipr_cmd);
535 * ipr_unmap_sglist - Unmap scatterlist if mapped
536 * @ioa_cfg: ioa config struct
537 * @ipr_cmd: ipr command struct
542 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
543 struct ipr_cmnd *ipr_cmd)
545 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
547 if (ipr_cmd->dma_use_sg) {
548 if (scsi_cmd->use_sg > 0) {
549 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
551 scsi_cmd->sc_data_direction);
553 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
554 scsi_cmd->request_bufflen,
555 scsi_cmd->sc_data_direction);
561 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
562 * @ioa_cfg: ioa config struct
563 * @clr_ints: interrupts to clear
565 * This function masks all interrupts on the adapter, then clears the
566 * interrupts specified in the mask
571 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
574 volatile u32 int_reg;
576 /* Stop new interrupts */
577 ioa_cfg->allow_interrupts = 0;
579 /* Set interrupt mask to stop all new interrupts */
580 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
582 /* Clear any pending interrupts */
583 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
584 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
588 * ipr_save_pcix_cmd_reg - Save PCI-X command register
589 * @ioa_cfg: ioa config struct
592 * 0 on success / -EIO on failure
594 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
596 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
598 if (pcix_cmd_reg == 0)
601 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
602 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
603 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
607 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
612 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
613 * @ioa_cfg: ioa config struct
616 * 0 on success / -EIO on failure
618 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
620 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
623 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
624 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
625 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
634 * ipr_sata_eh_done - done function for aborted SATA commands
635 * @ipr_cmd: ipr command struct
637 * This function is invoked for ops generated to SATA
638 * devices which are being aborted.
643 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
646 struct ata_queued_cmd *qc = ipr_cmd->qc;
647 struct ipr_sata_port *sata_port = qc->ap->private_data;
649 qc->err_mask |= AC_ERR_OTHER;
650 sata_port->ioasa.status |= ATA_BUSY;
651 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
656 * ipr_scsi_eh_done - mid-layer done function for aborted ops
657 * @ipr_cmd: ipr command struct
659 * This function is invoked by the interrupt handler for
660 * ops generated by the SCSI mid-layer which are being aborted.
665 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
667 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
668 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
670 scsi_cmd->result |= (DID_ERROR << 16);
672 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
673 scsi_cmd->scsi_done(scsi_cmd);
674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
678 * ipr_fail_all_ops - Fails all outstanding ops.
679 * @ioa_cfg: ioa config struct
681 * This function fails all outstanding ops.
686 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
688 struct ipr_cmnd *ipr_cmd, *temp;
691 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
692 list_del(&ipr_cmd->queue);
694 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
695 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
697 if (ipr_cmd->scsi_cmd)
698 ipr_cmd->done = ipr_scsi_eh_done;
699 else if (ipr_cmd->qc)
700 ipr_cmd->done = ipr_sata_eh_done;
702 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
703 del_timer(&ipr_cmd->timer);
704 ipr_cmd->done(ipr_cmd);
711 * ipr_do_req - Send driver initiated requests.
712 * @ipr_cmd: ipr command struct
713 * @done: done function
714 * @timeout_func: timeout function
715 * @timeout: timeout value
717 * This function sends the specified command to the adapter with the
718 * timeout given. The done function is invoked on command completion.
723 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
724 void (*done) (struct ipr_cmnd *),
725 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
727 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
729 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
731 ipr_cmd->done = done;
733 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
734 ipr_cmd->timer.expires = jiffies + timeout;
735 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
737 add_timer(&ipr_cmd->timer);
739 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
742 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
743 ioa_cfg->regs.ioarrin_reg);
747 * ipr_internal_cmd_done - Op done function for an internally generated op.
748 * @ipr_cmd: ipr command struct
750 * This function is the op done function for an internally generated,
751 * blocking op. It simply wakes the sleeping thread.
756 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
758 if (ipr_cmd->sibling)
759 ipr_cmd->sibling = NULL;
761 complete(&ipr_cmd->completion);
765 * ipr_send_blocking_cmd - Send command and sleep on its completion.
766 * @ipr_cmd: ipr command struct
767 * @timeout_func: function to invoke if command times out
773 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
774 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
777 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
779 init_completion(&ipr_cmd->completion);
780 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
782 spin_unlock_irq(ioa_cfg->host->host_lock);
783 wait_for_completion(&ipr_cmd->completion);
784 spin_lock_irq(ioa_cfg->host->host_lock);
788 * ipr_send_hcam - Send an HCAM to the adapter.
789 * @ioa_cfg: ioa config struct
791 * @hostrcb: hostrcb struct
793 * This function will send a Host Controlled Async command to the adapter.
794 * If HCAMs are currently not allowed to be issued to the adapter, it will
795 * place the hostrcb on the free queue.
800 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
801 struct ipr_hostrcb *hostrcb)
803 struct ipr_cmnd *ipr_cmd;
804 struct ipr_ioarcb *ioarcb;
806 if (ioa_cfg->allow_cmds) {
807 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
808 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
809 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
811 ipr_cmd->u.hostrcb = hostrcb;
812 ioarcb = &ipr_cmd->ioarcb;
814 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
815 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
816 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
817 ioarcb->cmd_pkt.cdb[1] = type;
818 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
819 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
821 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
822 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
823 ipr_cmd->ioadl[0].flags_and_data_len =
824 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
825 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
827 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
828 ipr_cmd->done = ipr_process_ccn;
830 ipr_cmd->done = ipr_process_error;
832 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
835 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
836 ioa_cfg->regs.ioarrin_reg);
838 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
843 * ipr_init_res_entry - Initialize a resource entry struct.
844 * @res: resource entry struct
849 static void ipr_init_res_entry(struct ipr_resource_entry *res)
851 res->needs_sync_complete = 0;
854 res->del_from_ml = 0;
855 res->resetting_device = 0;
857 res->sata_port = NULL;
861 * ipr_handle_config_change - Handle a config change from the adapter
862 * @ioa_cfg: ioa config struct
868 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
869 struct ipr_hostrcb *hostrcb)
871 struct ipr_resource_entry *res = NULL;
872 struct ipr_config_table_entry *cfgte;
875 cfgte = &hostrcb->hcam.u.ccn.cfgte;
877 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
878 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
879 sizeof(cfgte->res_addr))) {
886 if (list_empty(&ioa_cfg->free_res_q)) {
887 ipr_send_hcam(ioa_cfg,
888 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
893 res = list_entry(ioa_cfg->free_res_q.next,
894 struct ipr_resource_entry, queue);
896 list_del(&res->queue);
897 ipr_init_res_entry(res);
898 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
901 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
903 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
905 res->del_from_ml = 1;
906 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
907 if (ioa_cfg->allow_ml_add_del)
908 schedule_work(&ioa_cfg->work_q);
910 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
911 } else if (!res->sdev) {
913 if (ioa_cfg->allow_ml_add_del)
914 schedule_work(&ioa_cfg->work_q);
917 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
921 * ipr_process_ccn - Op done function for a CCN.
922 * @ipr_cmd: ipr command struct
924 * This function is the op done function for a configuration
925 * change notification host controlled async from the adapter.
930 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
933 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
934 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
936 list_del(&hostrcb->queue);
937 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
940 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
941 dev_err(&ioa_cfg->pdev->dev,
942 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
944 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
946 ipr_handle_config_change(ioa_cfg, hostrcb);
951 * ipr_log_vpd - Log the passed VPD to the error log.
952 * @vpd: vendor/product id/sn struct
957 static void ipr_log_vpd(struct ipr_vpd *vpd)
959 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
960 + IPR_SERIAL_NUM_LEN];
962 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
963 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
965 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
966 ipr_err("Vendor/Product ID: %s\n", buffer);
968 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
969 buffer[IPR_SERIAL_NUM_LEN] = '\0';
970 ipr_err(" Serial Number: %s\n", buffer);
974 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
975 * @vpd: vendor/product id/sn/wwn struct
980 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
982 ipr_log_vpd(&vpd->vpd);
983 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
984 be32_to_cpu(vpd->wwid[1]));
988 * ipr_log_enhanced_cache_error - Log a cache error.
989 * @ioa_cfg: ioa config struct
990 * @hostrcb: hostrcb struct
995 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
996 struct ipr_hostrcb *hostrcb)
998 struct ipr_hostrcb_type_12_error *error =
999 &hostrcb->hcam.u.error.u.type_12_error;
1001 ipr_err("-----Current Configuration-----\n");
1002 ipr_err("Cache Directory Card Information:\n");
1003 ipr_log_ext_vpd(&error->ioa_vpd);
1004 ipr_err("Adapter Card Information:\n");
1005 ipr_log_ext_vpd(&error->cfc_vpd);
1007 ipr_err("-----Expected Configuration-----\n");
1008 ipr_err("Cache Directory Card Information:\n");
1009 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1010 ipr_err("Adapter Card Information:\n");
1011 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1013 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1014 be32_to_cpu(error->ioa_data[0]),
1015 be32_to_cpu(error->ioa_data[1]),
1016 be32_to_cpu(error->ioa_data[2]));
1020 * ipr_log_cache_error - Log a cache error.
1021 * @ioa_cfg: ioa config struct
1022 * @hostrcb: hostrcb struct
1027 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1028 struct ipr_hostrcb *hostrcb)
1030 struct ipr_hostrcb_type_02_error *error =
1031 &hostrcb->hcam.u.error.u.type_02_error;
1033 ipr_err("-----Current Configuration-----\n");
1034 ipr_err("Cache Directory Card Information:\n");
1035 ipr_log_vpd(&error->ioa_vpd);
1036 ipr_err("Adapter Card Information:\n");
1037 ipr_log_vpd(&error->cfc_vpd);
1039 ipr_err("-----Expected Configuration-----\n");
1040 ipr_err("Cache Directory Card Information:\n");
1041 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1042 ipr_err("Adapter Card Information:\n");
1043 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1045 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1046 be32_to_cpu(error->ioa_data[0]),
1047 be32_to_cpu(error->ioa_data[1]),
1048 be32_to_cpu(error->ioa_data[2]));
1052 * ipr_log_enhanced_config_error - Log a configuration error.
1053 * @ioa_cfg: ioa config struct
1054 * @hostrcb: hostrcb struct
1059 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1060 struct ipr_hostrcb *hostrcb)
1062 int errors_logged, i;
1063 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1064 struct ipr_hostrcb_type_13_error *error;
1066 error = &hostrcb->hcam.u.error.u.type_13_error;
1067 errors_logged = be32_to_cpu(error->errors_logged);
1069 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1070 be32_to_cpu(error->errors_detected), errors_logged);
1072 dev_entry = error->dev;
1074 for (i = 0; i < errors_logged; i++, dev_entry++) {
1077 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1078 ipr_log_ext_vpd(&dev_entry->vpd);
1080 ipr_err("-----New Device Information-----\n");
1081 ipr_log_ext_vpd(&dev_entry->new_vpd);
1083 ipr_err("Cache Directory Card Information:\n");
1084 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1086 ipr_err("Adapter Card Information:\n");
1087 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1092 * ipr_log_config_error - Log a configuration error.
1093 * @ioa_cfg: ioa config struct
1094 * @hostrcb: hostrcb struct
1099 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1100 struct ipr_hostrcb *hostrcb)
1102 int errors_logged, i;
1103 struct ipr_hostrcb_device_data_entry *dev_entry;
1104 struct ipr_hostrcb_type_03_error *error;
1106 error = &hostrcb->hcam.u.error.u.type_03_error;
1107 errors_logged = be32_to_cpu(error->errors_logged);
1109 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1110 be32_to_cpu(error->errors_detected), errors_logged);
1112 dev_entry = error->dev;
1114 for (i = 0; i < errors_logged; i++, dev_entry++) {
1117 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1118 ipr_log_vpd(&dev_entry->vpd);
1120 ipr_err("-----New Device Information-----\n");
1121 ipr_log_vpd(&dev_entry->new_vpd);
1123 ipr_err("Cache Directory Card Information:\n");
1124 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1126 ipr_err("Adapter Card Information:\n");
1127 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1129 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1130 be32_to_cpu(dev_entry->ioa_data[0]),
1131 be32_to_cpu(dev_entry->ioa_data[1]),
1132 be32_to_cpu(dev_entry->ioa_data[2]),
1133 be32_to_cpu(dev_entry->ioa_data[3]),
1134 be32_to_cpu(dev_entry->ioa_data[4]));
1139 * ipr_log_enhanced_array_error - Log an array configuration error.
1140 * @ioa_cfg: ioa config struct
1141 * @hostrcb: hostrcb struct
1146 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1147 struct ipr_hostrcb *hostrcb)
1150 struct ipr_hostrcb_type_14_error *error;
1151 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1152 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1154 error = &hostrcb->hcam.u.error.u.type_14_error;
1158 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1159 error->protection_level,
1160 ioa_cfg->host->host_no,
1161 error->last_func_vset_res_addr.bus,
1162 error->last_func_vset_res_addr.target,
1163 error->last_func_vset_res_addr.lun);
1167 array_entry = error->array_member;
1168 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1169 sizeof(error->array_member));
1171 for (i = 0; i < num_entries; i++, array_entry++) {
1172 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1175 if (be32_to_cpu(error->exposed_mode_adn) == i)
1176 ipr_err("Exposed Array Member %d:\n", i);
1178 ipr_err("Array Member %d:\n", i);
1180 ipr_log_ext_vpd(&array_entry->vpd);
1181 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1182 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1183 "Expected Location");
1190 * ipr_log_array_error - Log an array configuration error.
1191 * @ioa_cfg: ioa config struct
1192 * @hostrcb: hostrcb struct
1197 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1198 struct ipr_hostrcb *hostrcb)
1201 struct ipr_hostrcb_type_04_error *error;
1202 struct ipr_hostrcb_array_data_entry *array_entry;
1203 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1205 error = &hostrcb->hcam.u.error.u.type_04_error;
1209 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1210 error->protection_level,
1211 ioa_cfg->host->host_no,
1212 error->last_func_vset_res_addr.bus,
1213 error->last_func_vset_res_addr.target,
1214 error->last_func_vset_res_addr.lun);
1218 array_entry = error->array_member;
1220 for (i = 0; i < 18; i++) {
1221 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1224 if (be32_to_cpu(error->exposed_mode_adn) == i)
1225 ipr_err("Exposed Array Member %d:\n", i);
1227 ipr_err("Array Member %d:\n", i);
1229 ipr_log_vpd(&array_entry->vpd);
1231 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1232 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1233 "Expected Location");
1238 array_entry = error->array_member2;
1245 * ipr_log_hex_data - Log additional hex IOA error data.
1246 * @ioa_cfg: ioa config struct
1247 * @data: IOA error data
1253 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1260 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1261 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1263 for (i = 0; i < len / 4; i += 4) {
1264 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1265 be32_to_cpu(data[i]),
1266 be32_to_cpu(data[i+1]),
1267 be32_to_cpu(data[i+2]),
1268 be32_to_cpu(data[i+3]));
1273 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1274 * @ioa_cfg: ioa config struct
1275 * @hostrcb: hostrcb struct
1280 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1281 struct ipr_hostrcb *hostrcb)
1283 struct ipr_hostrcb_type_17_error *error;
1285 error = &hostrcb->hcam.u.error.u.type_17_error;
1286 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1288 ipr_err("%s\n", error->failure_reason);
1289 ipr_err("Remote Adapter VPD:\n");
1290 ipr_log_ext_vpd(&error->vpd);
1291 ipr_log_hex_data(ioa_cfg, error->data,
1292 be32_to_cpu(hostrcb->hcam.length) -
1293 (offsetof(struct ipr_hostrcb_error, u) +
1294 offsetof(struct ipr_hostrcb_type_17_error, data)));
1298 * ipr_log_dual_ioa_error - Log a dual adapter error.
1299 * @ioa_cfg: ioa config struct
1300 * @hostrcb: hostrcb struct
1305 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1306 struct ipr_hostrcb *hostrcb)
1308 struct ipr_hostrcb_type_07_error *error;
1310 error = &hostrcb->hcam.u.error.u.type_07_error;
1311 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1313 ipr_err("%s\n", error->failure_reason);
1314 ipr_err("Remote Adapter VPD:\n");
1315 ipr_log_vpd(&error->vpd);
1316 ipr_log_hex_data(ioa_cfg, error->data,
1317 be32_to_cpu(hostrcb->hcam.length) -
1318 (offsetof(struct ipr_hostrcb_error, u) +
1319 offsetof(struct ipr_hostrcb_type_07_error, data)));
1322 static const struct {
1325 } path_active_desc[] = {
1326 { IPR_PATH_NO_INFO, "Path" },
1327 { IPR_PATH_ACTIVE, "Active path" },
1328 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1331 static const struct {
1334 } path_state_desc[] = {
1335 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1336 { IPR_PATH_HEALTHY, "is healthy" },
1337 { IPR_PATH_DEGRADED, "is degraded" },
1338 { IPR_PATH_FAILED, "is failed" }
1342 * ipr_log_fabric_path - Log a fabric path error
1343 * @hostrcb: hostrcb struct
1344 * @fabric: fabric descriptor
1349 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1350 struct ipr_hostrcb_fabric_desc *fabric)
1353 u8 path_state = fabric->path_state;
1354 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1355 u8 state = path_state & IPR_PATH_STATE_MASK;
1357 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1358 if (path_active_desc[i].active != active)
1361 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1362 if (path_state_desc[j].state != state)
1365 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1366 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1367 path_active_desc[i].desc, path_state_desc[j].desc,
1369 } else if (fabric->cascaded_expander == 0xff) {
1370 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1371 path_active_desc[i].desc, path_state_desc[j].desc,
1372 fabric->ioa_port, fabric->phy);
1373 } else if (fabric->phy == 0xff) {
1374 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1375 path_active_desc[i].desc, path_state_desc[j].desc,
1376 fabric->ioa_port, fabric->cascaded_expander);
1378 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1379 path_active_desc[i].desc, path_state_desc[j].desc,
1380 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1386 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1387 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1390 static const struct {
1393 } path_type_desc[] = {
1394 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1395 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1396 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1397 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1400 static const struct {
1403 } path_status_desc[] = {
1404 { IPR_PATH_CFG_NO_PROB, "Functional" },
1405 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1406 { IPR_PATH_CFG_FAILED, "Failed" },
1407 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1408 { IPR_PATH_NOT_DETECTED, "Missing" },
1409 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1412 static const char *link_rate[] = {
1415 "phy reset problem",
1432 * ipr_log_path_elem - Log a fabric path element.
1433 * @hostrcb: hostrcb struct
1434 * @cfg: fabric path element struct
1439 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1440 struct ipr_hostrcb_config_element *cfg)
1443 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1444 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1446 if (type == IPR_PATH_CFG_NOT_EXIST)
1449 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1450 if (path_type_desc[i].type != type)
1453 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1454 if (path_status_desc[j].status != status)
1457 if (type == IPR_PATH_CFG_IOA_PORT) {
1458 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1459 path_status_desc[j].desc, path_type_desc[i].desc,
1460 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1461 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1463 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1464 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1465 path_status_desc[j].desc, path_type_desc[i].desc,
1466 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1467 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1468 } else if (cfg->cascaded_expander == 0xff) {
1469 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1470 "WWN=%08X%08X\n", path_status_desc[j].desc,
1471 path_type_desc[i].desc, cfg->phy,
1472 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1473 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1474 } else if (cfg->phy == 0xff) {
1475 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1476 "WWN=%08X%08X\n", path_status_desc[j].desc,
1477 path_type_desc[i].desc, cfg->cascaded_expander,
1478 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1479 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1481 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1482 "WWN=%08X%08X\n", path_status_desc[j].desc,
1483 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1484 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1485 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1492 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1493 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1494 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1495 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1499 * ipr_log_fabric_error - Log a fabric error.
1500 * @ioa_cfg: ioa config struct
1501 * @hostrcb: hostrcb struct
1506 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1507 struct ipr_hostrcb *hostrcb)
1509 struct ipr_hostrcb_type_20_error *error;
1510 struct ipr_hostrcb_fabric_desc *fabric;
1511 struct ipr_hostrcb_config_element *cfg;
1514 error = &hostrcb->hcam.u.error.u.type_20_error;
1515 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1516 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1518 add_len = be32_to_cpu(hostrcb->hcam.length) -
1519 (offsetof(struct ipr_hostrcb_error, u) +
1520 offsetof(struct ipr_hostrcb_type_20_error, desc));
1522 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1523 ipr_log_fabric_path(hostrcb, fabric);
1524 for_each_fabric_cfg(fabric, cfg)
1525 ipr_log_path_elem(hostrcb, cfg);
1527 add_len -= be16_to_cpu(fabric->length);
1528 fabric = (struct ipr_hostrcb_fabric_desc *)
1529 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1532 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1536 * ipr_log_generic_error - Log an adapter error.
1537 * @ioa_cfg: ioa config struct
1538 * @hostrcb: hostrcb struct
1543 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1544 struct ipr_hostrcb *hostrcb)
1546 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1547 be32_to_cpu(hostrcb->hcam.length));
1551 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1554 * This function will return the index of into the ipr_error_table
1555 * for the specified IOASC. If the IOASC is not in the table,
1556 * 0 will be returned, which points to the entry used for unknown errors.
1559 * index into the ipr_error_table
1561 static u32 ipr_get_error(u32 ioasc)
1565 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1566 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1573 * ipr_handle_log_data - Log an adapter error.
1574 * @ioa_cfg: ioa config struct
1575 * @hostrcb: hostrcb struct
1577 * This function logs an adapter error to the system.
1582 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1583 struct ipr_hostrcb *hostrcb)
1588 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1591 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1592 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1594 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1596 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1597 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1598 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1599 scsi_report_bus_reset(ioa_cfg->host,
1600 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1603 error_index = ipr_get_error(ioasc);
1605 if (!ipr_error_table[error_index].log_hcam)
1608 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1610 /* Set indication we have logged an error */
1611 ioa_cfg->errors_logged++;
1613 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1615 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1616 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1618 switch (hostrcb->hcam.overlay_id) {
1619 case IPR_HOST_RCB_OVERLAY_ID_2:
1620 ipr_log_cache_error(ioa_cfg, hostrcb);
1622 case IPR_HOST_RCB_OVERLAY_ID_3:
1623 ipr_log_config_error(ioa_cfg, hostrcb);
1625 case IPR_HOST_RCB_OVERLAY_ID_4:
1626 case IPR_HOST_RCB_OVERLAY_ID_6:
1627 ipr_log_array_error(ioa_cfg, hostrcb);
1629 case IPR_HOST_RCB_OVERLAY_ID_7:
1630 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1632 case IPR_HOST_RCB_OVERLAY_ID_12:
1633 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1635 case IPR_HOST_RCB_OVERLAY_ID_13:
1636 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1638 case IPR_HOST_RCB_OVERLAY_ID_14:
1639 case IPR_HOST_RCB_OVERLAY_ID_16:
1640 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1642 case IPR_HOST_RCB_OVERLAY_ID_17:
1643 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1645 case IPR_HOST_RCB_OVERLAY_ID_20:
1646 ipr_log_fabric_error(ioa_cfg, hostrcb);
1648 case IPR_HOST_RCB_OVERLAY_ID_1:
1649 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1651 ipr_log_generic_error(ioa_cfg, hostrcb);
1657 * ipr_process_error - Op done function for an adapter error log.
1658 * @ipr_cmd: ipr command struct
1660 * This function is the op done function for an error log host
1661 * controlled async from the adapter. It will log the error and
1662 * send the HCAM back to the adapter.
1667 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1669 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1670 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1671 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1673 list_del(&hostrcb->queue);
1674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1677 ipr_handle_log_data(ioa_cfg, hostrcb);
1678 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1679 dev_err(&ioa_cfg->pdev->dev,
1680 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1683 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1687 * ipr_timeout - An internally generated op has timed out.
1688 * @ipr_cmd: ipr command struct
1690 * This function blocks host requests and initiates an
1696 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1698 unsigned long lock_flags = 0;
1699 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1702 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1704 ioa_cfg->errors_logged++;
1705 dev_err(&ioa_cfg->pdev->dev,
1706 "Adapter being reset due to command timeout.\n");
1708 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1709 ioa_cfg->sdt_state = GET_DUMP;
1711 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1712 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1714 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1719 * ipr_oper_timeout - Adapter timed out transitioning to operational
1720 * @ipr_cmd: ipr command struct
1722 * This function blocks host requests and initiates an
1728 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1730 unsigned long lock_flags = 0;
1731 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1734 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1736 ioa_cfg->errors_logged++;
1737 dev_err(&ioa_cfg->pdev->dev,
1738 "Adapter timed out transitioning to operational.\n");
1740 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1741 ioa_cfg->sdt_state = GET_DUMP;
1743 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1745 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1746 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1754 * ipr_reset_reload - Reset/Reload the IOA
1755 * @ioa_cfg: ioa config struct
1756 * @shutdown_type: shutdown type
1758 * This function resets the adapter and re-initializes it.
1759 * This function assumes that all new host commands have been stopped.
1763 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1764 enum ipr_shutdown_type shutdown_type)
1766 if (!ioa_cfg->in_reset_reload)
1767 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1769 spin_unlock_irq(ioa_cfg->host->host_lock);
1770 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1771 spin_lock_irq(ioa_cfg->host->host_lock);
1773 /* If we got hit with a host reset while we were already resetting
1774 the adapter for some reason, and the reset failed. */
1775 if (ioa_cfg->ioa_is_dead) {
1784 * ipr_find_ses_entry - Find matching SES in SES table
1785 * @res: resource entry struct of SES
1788 * pointer to SES table entry / NULL on failure
1790 static const struct ipr_ses_table_entry *
1791 ipr_find_ses_entry(struct ipr_resource_entry *res)
1794 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1796 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1797 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1798 if (ste->compare_product_id_byte[j] == 'X') {
1799 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1807 if (matches == IPR_PROD_ID_LEN)
1815 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1816 * @ioa_cfg: ioa config struct
1818 * @bus_width: bus width
1821 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1822 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1823 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1824 * max 160MHz = max 320MB/sec).
1826 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1828 struct ipr_resource_entry *res;
1829 const struct ipr_ses_table_entry *ste;
1830 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1832 /* Loop through each config table entry in the config table buffer */
1833 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1834 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1837 if (bus != res->cfgte.res_addr.bus)
1840 if (!(ste = ipr_find_ses_entry(res)))
1843 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1846 return max_xfer_rate;
1850 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1851 * @ioa_cfg: ioa config struct
1852 * @max_delay: max delay in micro-seconds to wait
1854 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1857 * 0 on success / other on failure
1859 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1861 volatile u32 pcii_reg;
1864 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1865 while (delay < max_delay) {
1866 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1868 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1871 /* udelay cannot be used if delay is more than a few milliseconds */
1872 if ((delay / 1000) > MAX_UDELAY_MS)
1873 mdelay(delay / 1000);
1883 * ipr_get_ldump_data_section - Dump IOA memory
1884 * @ioa_cfg: ioa config struct
1885 * @start_addr: adapter address to dump
1886 * @dest: destination kernel buffer
1887 * @length_in_words: length to dump in 4 byte words
1890 * 0 on success / -EIO on failure
1892 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1894 __be32 *dest, u32 length_in_words)
1896 volatile u32 temp_pcii_reg;
1899 /* Write IOA interrupt reg starting LDUMP state */
1900 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1901 ioa_cfg->regs.set_uproc_interrupt_reg);
1903 /* Wait for IO debug acknowledge */
1904 if (ipr_wait_iodbg_ack(ioa_cfg,
1905 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1906 dev_err(&ioa_cfg->pdev->dev,
1907 "IOA dump long data transfer timeout\n");
1911 /* Signal LDUMP interlocked - clear IO debug ack */
1912 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1913 ioa_cfg->regs.clr_interrupt_reg);
1915 /* Write Mailbox with starting address */
1916 writel(start_addr, ioa_cfg->ioa_mailbox);
1918 /* Signal address valid - clear IOA Reset alert */
1919 writel(IPR_UPROCI_RESET_ALERT,
1920 ioa_cfg->regs.clr_uproc_interrupt_reg);
1922 for (i = 0; i < length_in_words; i++) {
1923 /* Wait for IO debug acknowledge */
1924 if (ipr_wait_iodbg_ack(ioa_cfg,
1925 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1926 dev_err(&ioa_cfg->pdev->dev,
1927 "IOA dump short data transfer timeout\n");
1931 /* Read data from mailbox and increment destination pointer */
1932 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1935 /* For all but the last word of data, signal data received */
1936 if (i < (length_in_words - 1)) {
1937 /* Signal dump data received - Clear IO debug Ack */
1938 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1939 ioa_cfg->regs.clr_interrupt_reg);
1943 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1944 writel(IPR_UPROCI_RESET_ALERT,
1945 ioa_cfg->regs.set_uproc_interrupt_reg);
1947 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1948 ioa_cfg->regs.clr_uproc_interrupt_reg);
1950 /* Signal dump data received - Clear IO debug Ack */
1951 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1952 ioa_cfg->regs.clr_interrupt_reg);
1954 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1955 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1957 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1959 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1969 #ifdef CONFIG_SCSI_IPR_DUMP
1971 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1972 * @ioa_cfg: ioa config struct
1973 * @pci_address: adapter address
1974 * @length: length of data to copy
1976 * Copy data from PCI adapter to kernel buffer.
1977 * Note: length MUST be a 4 byte multiple
1979 * 0 on success / other on failure
1981 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1982 unsigned long pci_address, u32 length)
1984 int bytes_copied = 0;
1985 int cur_len, rc, rem_len, rem_page_len;
1987 unsigned long lock_flags = 0;
1988 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1990 while (bytes_copied < length &&
1991 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1992 if (ioa_dump->page_offset >= PAGE_SIZE ||
1993 ioa_dump->page_offset == 0) {
1994 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1998 return bytes_copied;
2001 ioa_dump->page_offset = 0;
2002 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2003 ioa_dump->next_page_index++;
2005 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2007 rem_len = length - bytes_copied;
2008 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2009 cur_len = min(rem_len, rem_page_len);
2011 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2012 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2015 rc = ipr_get_ldump_data_section(ioa_cfg,
2016 pci_address + bytes_copied,
2017 &page[ioa_dump->page_offset / 4],
2018 (cur_len / sizeof(u32)));
2020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2023 ioa_dump->page_offset += cur_len;
2024 bytes_copied += cur_len;
2032 return bytes_copied;
2036 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2037 * @hdr: dump entry header struct
2042 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2044 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2046 hdr->offset = sizeof(*hdr);
2047 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2051 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2052 * @ioa_cfg: ioa config struct
2053 * @driver_dump: driver dump struct
2058 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2059 struct ipr_driver_dump *driver_dump)
2061 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2063 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2064 driver_dump->ioa_type_entry.hdr.len =
2065 sizeof(struct ipr_dump_ioa_type_entry) -
2066 sizeof(struct ipr_dump_entry_header);
2067 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2068 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2069 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2070 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2071 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2072 ucode_vpd->minor_release[1];
2073 driver_dump->hdr.num_entries++;
2077 * ipr_dump_version_data - Fill in the driver version in the dump.
2078 * @ioa_cfg: ioa config struct
2079 * @driver_dump: driver dump struct
2084 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2085 struct ipr_driver_dump *driver_dump)
2087 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2088 driver_dump->version_entry.hdr.len =
2089 sizeof(struct ipr_dump_version_entry) -
2090 sizeof(struct ipr_dump_entry_header);
2091 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2092 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2093 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2094 driver_dump->hdr.num_entries++;
2098 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2099 * @ioa_cfg: ioa config struct
2100 * @driver_dump: driver dump struct
2105 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2106 struct ipr_driver_dump *driver_dump)
2108 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2109 driver_dump->trace_entry.hdr.len =
2110 sizeof(struct ipr_dump_trace_entry) -
2111 sizeof(struct ipr_dump_entry_header);
2112 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2113 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2114 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2115 driver_dump->hdr.num_entries++;
2119 * ipr_dump_location_data - Fill in the IOA location in the dump.
2120 * @ioa_cfg: ioa config struct
2121 * @driver_dump: driver dump struct
2126 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2127 struct ipr_driver_dump *driver_dump)
2129 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2130 driver_dump->location_entry.hdr.len =
2131 sizeof(struct ipr_dump_location_entry) -
2132 sizeof(struct ipr_dump_entry_header);
2133 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2134 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2135 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2136 driver_dump->hdr.num_entries++;
2140 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2141 * @ioa_cfg: ioa config struct
2142 * @dump: dump struct
2147 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2149 unsigned long start_addr, sdt_word;
2150 unsigned long lock_flags = 0;
2151 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2152 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2153 u32 num_entries, start_off, end_off;
2154 u32 bytes_to_copy, bytes_copied, rc;
2155 struct ipr_sdt *sdt;
2160 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2162 if (ioa_cfg->sdt_state != GET_DUMP) {
2163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2167 start_addr = readl(ioa_cfg->ioa_mailbox);
2169 if (!ipr_sdt_is_fmt2(start_addr)) {
2170 dev_err(&ioa_cfg->pdev->dev,
2171 "Invalid dump table format: %lx\n", start_addr);
2172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2176 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2178 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2180 /* Initialize the overall dump header */
2181 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2182 driver_dump->hdr.num_entries = 1;
2183 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2184 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2185 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2186 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2188 ipr_dump_version_data(ioa_cfg, driver_dump);
2189 ipr_dump_location_data(ioa_cfg, driver_dump);
2190 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2191 ipr_dump_trace_data(ioa_cfg, driver_dump);
2193 /* Update dump_header */
2194 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2196 /* IOA Dump entry */
2197 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2198 ioa_dump->format = IPR_SDT_FMT2;
2199 ioa_dump->hdr.len = 0;
2200 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2201 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2203 /* First entries in sdt are actually a list of dump addresses and
2204 lengths to gather the real dump data. sdt represents the pointer
2205 to the ioa generated dump table. Dump data will be extracted based
2206 on entries in this table */
2207 sdt = &ioa_dump->sdt;
2209 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2210 sizeof(struct ipr_sdt) / sizeof(__be32));
2212 /* Smart Dump table is ready to use and the first entry is valid */
2213 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2214 dev_err(&ioa_cfg->pdev->dev,
2215 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2216 rc, be32_to_cpu(sdt->hdr.state));
2217 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2218 ioa_cfg->sdt_state = DUMP_OBTAINED;
2219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2223 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2225 if (num_entries > IPR_NUM_SDT_ENTRIES)
2226 num_entries = IPR_NUM_SDT_ENTRIES;
2228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2230 for (i = 0; i < num_entries; i++) {
2231 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2232 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2236 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2237 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2238 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2239 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2241 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2242 bytes_to_copy = end_off - start_off;
2243 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2244 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2248 /* Copy data from adapter to driver buffers */
2249 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2252 ioa_dump->hdr.len += bytes_copied;
2254 if (bytes_copied != bytes_to_copy) {
2255 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2262 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2264 /* Update dump_header */
2265 driver_dump->hdr.len += ioa_dump->hdr.len;
2267 ioa_cfg->sdt_state = DUMP_OBTAINED;
2272 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2276 * ipr_release_dump - Free adapter dump memory
2277 * @kref: kref struct
2282 static void ipr_release_dump(struct kref *kref)
2284 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2285 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2286 unsigned long lock_flags = 0;
2290 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2291 ioa_cfg->dump = NULL;
2292 ioa_cfg->sdt_state = INACTIVE;
2293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2295 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2296 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2303 * ipr_worker_thread - Worker thread
2304 * @work: ioa config struct
2306 * Called at task level from a work thread. This function takes care
2307 * of adding and removing device from the mid-layer as configuration
2308 * changes are detected by the adapter.
2313 static void ipr_worker_thread(struct work_struct *work)
2315 unsigned long lock_flags;
2316 struct ipr_resource_entry *res;
2317 struct scsi_device *sdev;
2318 struct ipr_dump *dump;
2319 struct ipr_ioa_cfg *ioa_cfg =
2320 container_of(work, struct ipr_ioa_cfg, work_q);
2321 u8 bus, target, lun;
2325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2327 if (ioa_cfg->sdt_state == GET_DUMP) {
2328 dump = ioa_cfg->dump;
2330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2333 kref_get(&dump->kref);
2334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2335 ipr_get_ioa_dump(ioa_cfg, dump);
2336 kref_put(&dump->kref, ipr_release_dump);
2338 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2339 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2340 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2348 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2353 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2354 if (res->del_from_ml && res->sdev) {
2357 if (!scsi_device_get(sdev)) {
2358 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2360 scsi_remove_device(sdev);
2361 scsi_device_put(sdev);
2362 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2369 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2370 if (res->add_to_ml) {
2371 bus = res->cfgte.res_addr.bus;
2372 target = res->cfgte.res_addr.target;
2373 lun = res->cfgte.res_addr.lun;
2375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2376 scsi_add_device(ioa_cfg->host, bus, target, lun);
2377 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2383 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2387 #ifdef CONFIG_SCSI_IPR_TRACE
2389 * ipr_read_trace - Dump the adapter trace
2390 * @kobj: kobject struct
2393 * @count: buffer size
2396 * number of bytes printed to buffer
2398 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2399 loff_t off, size_t count)
2401 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2402 struct Scsi_Host *shost = class_to_shost(cdev);
2403 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2404 unsigned long lock_flags = 0;
2405 int size = IPR_TRACE_SIZE;
2406 char *src = (char *)ioa_cfg->trace;
2410 if (off + count > size) {
2415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2416 memcpy(buf, &src[off], count);
2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2421 static struct bin_attribute ipr_trace_attr = {
2427 .read = ipr_read_trace,
2431 static const struct {
2432 enum ipr_cache_state state;
2434 } cache_state [] = {
2435 { CACHE_NONE, "none" },
2436 { CACHE_DISABLED, "disabled" },
2437 { CACHE_ENABLED, "enabled" }
2441 * ipr_show_write_caching - Show the write caching attribute
2442 * @class_dev: class device struct
2446 * number of bytes printed to buffer
2448 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2450 struct Scsi_Host *shost = class_to_shost(class_dev);
2451 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2452 unsigned long lock_flags = 0;
2455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2456 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2457 if (cache_state[i].state == ioa_cfg->cache_state) {
2458 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2468 * ipr_store_write_caching - Enable/disable adapter write cache
2469 * @class_dev: class_device struct
2471 * @count: buffer size
2473 * This function will enable/disable adapter write cache.
2476 * count on success / other on failure
2478 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2479 const char *buf, size_t count)
2481 struct Scsi_Host *shost = class_to_shost(class_dev);
2482 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2483 unsigned long lock_flags = 0;
2484 enum ipr_cache_state new_state = CACHE_INVALID;
2487 if (!capable(CAP_SYS_ADMIN))
2489 if (ioa_cfg->cache_state == CACHE_NONE)
2492 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2493 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2494 new_state = cache_state[i].state;
2499 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2502 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2503 if (ioa_cfg->cache_state == new_state) {
2504 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2508 ioa_cfg->cache_state = new_state;
2509 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2510 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2511 if (!ioa_cfg->in_reset_reload)
2512 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2519 static struct class_device_attribute ipr_ioa_cache_attr = {
2521 .name = "write_cache",
2522 .mode = S_IRUGO | S_IWUSR,
2524 .show = ipr_show_write_caching,
2525 .store = ipr_store_write_caching
2529 * ipr_show_fw_version - Show the firmware version
2530 * @class_dev: class device struct
2534 * number of bytes printed to buffer
2536 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2538 struct Scsi_Host *shost = class_to_shost(class_dev);
2539 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2540 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2541 unsigned long lock_flags = 0;
2544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2545 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2546 ucode_vpd->major_release, ucode_vpd->card_type,
2547 ucode_vpd->minor_release[0],
2548 ucode_vpd->minor_release[1]);
2549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2553 static struct class_device_attribute ipr_fw_version_attr = {
2555 .name = "fw_version",
2558 .show = ipr_show_fw_version,
2562 * ipr_show_log_level - Show the adapter's error logging level
2563 * @class_dev: class device struct
2567 * number of bytes printed to buffer
2569 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2571 struct Scsi_Host *shost = class_to_shost(class_dev);
2572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2573 unsigned long lock_flags = 0;
2576 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2577 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2578 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2583 * ipr_store_log_level - Change the adapter's error logging level
2584 * @class_dev: class device struct
2588 * number of bytes printed to buffer
2590 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2591 const char *buf, size_t count)
2593 struct Scsi_Host *shost = class_to_shost(class_dev);
2594 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2595 unsigned long lock_flags = 0;
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2603 static struct class_device_attribute ipr_log_level_attr = {
2605 .name = "log_level",
2606 .mode = S_IRUGO | S_IWUSR,
2608 .show = ipr_show_log_level,
2609 .store = ipr_store_log_level
2613 * ipr_store_diagnostics - IOA Diagnostics interface
2614 * @class_dev: class_device struct
2616 * @count: buffer size
2618 * This function will reset the adapter and wait a reasonable
2619 * amount of time for any errors that the adapter might log.
2622 * count on success / other on failure
2624 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2625 const char *buf, size_t count)
2627 struct Scsi_Host *shost = class_to_shost(class_dev);
2628 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2629 unsigned long lock_flags = 0;
2632 if (!capable(CAP_SYS_ADMIN))
2635 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2636 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2637 ioa_cfg->errors_logged = 0;
2638 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2640 if (ioa_cfg->in_reset_reload) {
2641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2642 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2644 /* Wait for a second for any errors to be logged */
2647 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2652 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2659 static struct class_device_attribute ipr_diagnostics_attr = {
2661 .name = "run_diagnostics",
2664 .store = ipr_store_diagnostics
2668 * ipr_show_adapter_state - Show the adapter's state
2669 * @class_dev: class device struct
2673 * number of bytes printed to buffer
2675 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2677 struct Scsi_Host *shost = class_to_shost(class_dev);
2678 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2679 unsigned long lock_flags = 0;
2682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2683 if (ioa_cfg->ioa_is_dead)
2684 len = snprintf(buf, PAGE_SIZE, "offline\n");
2686 len = snprintf(buf, PAGE_SIZE, "online\n");
2687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2692 * ipr_store_adapter_state - Change adapter state
2693 * @class_dev: class_device struct
2695 * @count: buffer size
2697 * This function will change the adapter's state.
2700 * count on success / other on failure
2702 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2703 const char *buf, size_t count)
2705 struct Scsi_Host *shost = class_to_shost(class_dev);
2706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2707 unsigned long lock_flags;
2710 if (!capable(CAP_SYS_ADMIN))
2713 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2714 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2715 ioa_cfg->ioa_is_dead = 0;
2716 ioa_cfg->reset_retries = 0;
2717 ioa_cfg->in_ioa_bringdown = 0;
2718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2721 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2726 static struct class_device_attribute ipr_ioa_state_attr = {
2729 .mode = S_IRUGO | S_IWUSR,
2731 .show = ipr_show_adapter_state,
2732 .store = ipr_store_adapter_state
2736 * ipr_store_reset_adapter - Reset the adapter
2737 * @class_dev: class_device struct
2739 * @count: buffer size
2741 * This function will reset the adapter.
2744 * count on success / other on failure
2746 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2747 const char *buf, size_t count)
2749 struct Scsi_Host *shost = class_to_shost(class_dev);
2750 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2751 unsigned long lock_flags;
2754 if (!capable(CAP_SYS_ADMIN))
2757 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2758 if (!ioa_cfg->in_reset_reload)
2759 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2760 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2761 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2766 static struct class_device_attribute ipr_ioa_reset_attr = {
2768 .name = "reset_host",
2771 .store = ipr_store_reset_adapter
2775 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2776 * @buf_len: buffer length
2778 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2779 * list to use for microcode download
2782 * pointer to sglist / NULL on failure
2784 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2786 int sg_size, order, bsize_elem, num_elem, i, j;
2787 struct ipr_sglist *sglist;
2788 struct scatterlist *scatterlist;
2791 /* Get the minimum size per scatter/gather element */
2792 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2794 /* Get the actual size per element */
2795 order = get_order(sg_size);
2797 /* Determine the actual number of bytes per element */
2798 bsize_elem = PAGE_SIZE * (1 << order);
2800 /* Determine the actual number of sg entries needed */
2801 if (buf_len % bsize_elem)
2802 num_elem = (buf_len / bsize_elem) + 1;
2804 num_elem = buf_len / bsize_elem;
2806 /* Allocate a scatter/gather list for the DMA */
2807 sglist = kzalloc(sizeof(struct ipr_sglist) +
2808 (sizeof(struct scatterlist) * (num_elem - 1)),
2811 if (sglist == NULL) {
2816 scatterlist = sglist->scatterlist;
2818 sglist->order = order;
2819 sglist->num_sg = num_elem;
2821 /* Allocate a bunch of sg elements */
2822 for (i = 0; i < num_elem; i++) {
2823 page = alloc_pages(GFP_KERNEL, order);
2827 /* Free up what we already allocated */
2828 for (j = i - 1; j >= 0; j--)
2829 __free_pages(scatterlist[j].page, order);
2834 scatterlist[i].page = page;
2841 * ipr_free_ucode_buffer - Frees a microcode download buffer
2842 * @p_dnld: scatter/gather list pointer
2844 * Free a DMA'able ucode download buffer previously allocated with
2845 * ipr_alloc_ucode_buffer
2850 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2854 for (i = 0; i < sglist->num_sg; i++)
2855 __free_pages(sglist->scatterlist[i].page, sglist->order);
2861 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2862 * @sglist: scatter/gather list pointer
2863 * @buffer: buffer pointer
2864 * @len: buffer length
2866 * Copy a microcode image from a user buffer into a buffer allocated by
2867 * ipr_alloc_ucode_buffer
2870 * 0 on success / other on failure
2872 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2873 u8 *buffer, u32 len)
2875 int bsize_elem, i, result = 0;
2876 struct scatterlist *scatterlist;
2879 /* Determine the actual number of bytes per element */
2880 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2882 scatterlist = sglist->scatterlist;
2884 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2885 kaddr = kmap(scatterlist[i].page);
2886 memcpy(kaddr, buffer, bsize_elem);
2887 kunmap(scatterlist[i].page);
2889 scatterlist[i].length = bsize_elem;
2897 if (len % bsize_elem) {
2898 kaddr = kmap(scatterlist[i].page);
2899 memcpy(kaddr, buffer, len % bsize_elem);
2900 kunmap(scatterlist[i].page);
2902 scatterlist[i].length = len % bsize_elem;
2905 sglist->buffer_len = len;
2910 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2911 * @ipr_cmd: ipr command struct
2912 * @sglist: scatter/gather list
2914 * Builds a microcode download IOA data list (IOADL).
2917 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2918 struct ipr_sglist *sglist)
2920 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2921 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2922 struct scatterlist *scatterlist = sglist->scatterlist;
2925 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2926 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2927 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2928 ioarcb->write_ioadl_len =
2929 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2931 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2932 ioadl[i].flags_and_data_len =
2933 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2935 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2938 ioadl[i-1].flags_and_data_len |=
2939 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2943 * ipr_update_ioa_ucode - Update IOA's microcode
2944 * @ioa_cfg: ioa config struct
2945 * @sglist: scatter/gather list
2947 * Initiate an adapter reset to update the IOA's microcode
2950 * 0 on success / -EIO on failure
2952 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2953 struct ipr_sglist *sglist)
2955 unsigned long lock_flags;
2957 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2959 if (ioa_cfg->ucode_sglist) {
2960 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2961 dev_err(&ioa_cfg->pdev->dev,
2962 "Microcode download already in progress\n");
2966 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2967 sglist->num_sg, DMA_TO_DEVICE);
2969 if (!sglist->num_dma_sg) {
2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2971 dev_err(&ioa_cfg->pdev->dev,
2972 "Failed to map microcode download buffer!\n");
2976 ioa_cfg->ucode_sglist = sglist;
2977 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2979 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2981 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2982 ioa_cfg->ucode_sglist = NULL;
2983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2988 * ipr_store_update_fw - Update the firmware on the adapter
2989 * @class_dev: class_device struct
2991 * @count: buffer size
2993 * This function will update the firmware on the adapter.
2996 * count on success / other on failure
2998 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2999 const char *buf, size_t count)
3001 struct Scsi_Host *shost = class_to_shost(class_dev);
3002 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3003 struct ipr_ucode_image_header *image_hdr;
3004 const struct firmware *fw_entry;
3005 struct ipr_sglist *sglist;
3008 int len, result, dnld_size;
3010 if (!capable(CAP_SYS_ADMIN))
3013 len = snprintf(fname, 99, "%s", buf);
3014 fname[len-1] = '\0';
3016 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3017 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3021 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3023 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3024 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3025 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3026 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3027 release_firmware(fw_entry);
3031 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3032 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3033 sglist = ipr_alloc_ucode_buffer(dnld_size);
3036 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3037 release_firmware(fw_entry);
3041 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3044 dev_err(&ioa_cfg->pdev->dev,
3045 "Microcode buffer copy to DMA buffer failed\n");
3049 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3054 ipr_free_ucode_buffer(sglist);
3055 release_firmware(fw_entry);
3059 static struct class_device_attribute ipr_update_fw_attr = {
3061 .name = "update_fw",
3064 .store = ipr_store_update_fw
3067 static struct class_device_attribute *ipr_ioa_attrs[] = {
3068 &ipr_fw_version_attr,
3069 &ipr_log_level_attr,
3070 &ipr_diagnostics_attr,
3071 &ipr_ioa_state_attr,
3072 &ipr_ioa_reset_attr,
3073 &ipr_update_fw_attr,
3074 &ipr_ioa_cache_attr,
3078 #ifdef CONFIG_SCSI_IPR_DUMP
3080 * ipr_read_dump - Dump the adapter
3081 * @kobj: kobject struct
3084 * @count: buffer size
3087 * number of bytes printed to buffer
3089 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3090 loff_t off, size_t count)
3092 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3093 struct Scsi_Host *shost = class_to_shost(cdev);
3094 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3095 struct ipr_dump *dump;
3096 unsigned long lock_flags = 0;
3101 if (!capable(CAP_SYS_ADMIN))
3104 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3105 dump = ioa_cfg->dump;
3107 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3111 kref_get(&dump->kref);
3112 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3114 if (off > dump->driver_dump.hdr.len) {
3115 kref_put(&dump->kref, ipr_release_dump);
3119 if (off + count > dump->driver_dump.hdr.len) {
3120 count = dump->driver_dump.hdr.len - off;
3124 if (count && off < sizeof(dump->driver_dump)) {
3125 if (off + count > sizeof(dump->driver_dump))
3126 len = sizeof(dump->driver_dump) - off;
3129 src = (u8 *)&dump->driver_dump + off;
3130 memcpy(buf, src, len);
3136 off -= sizeof(dump->driver_dump);
3138 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3139 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3140 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3143 src = (u8 *)&dump->ioa_dump + off;
3144 memcpy(buf, src, len);
3150 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3153 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3154 len = PAGE_ALIGN(off) - off;
3157 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3158 src += off & ~PAGE_MASK;
3159 memcpy(buf, src, len);
3165 kref_put(&dump->kref, ipr_release_dump);
3170 * ipr_alloc_dump - Prepare for adapter dump
3171 * @ioa_cfg: ioa config struct
3174 * 0 on success / other on failure
3176 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3178 struct ipr_dump *dump;
3179 unsigned long lock_flags = 0;
3181 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3184 ipr_err("Dump memory allocation failed\n");
3188 kref_init(&dump->kref);
3189 dump->ioa_cfg = ioa_cfg;
3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3193 if (INACTIVE != ioa_cfg->sdt_state) {
3194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3199 ioa_cfg->dump = dump;
3200 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3201 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3202 ioa_cfg->dump_taken = 1;
3203 schedule_work(&ioa_cfg->work_q);
3205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3211 * ipr_free_dump - Free adapter dump memory
3212 * @ioa_cfg: ioa config struct
3215 * 0 on success / other on failure
3217 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3219 struct ipr_dump *dump;
3220 unsigned long lock_flags = 0;
3224 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3225 dump = ioa_cfg->dump;
3227 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3231 ioa_cfg->dump = NULL;
3232 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3234 kref_put(&dump->kref, ipr_release_dump);
3241 * ipr_write_dump - Setup dump state of adapter
3242 * @kobj: kobject struct
3245 * @count: buffer size
3248 * number of bytes printed to buffer
3250 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3251 loff_t off, size_t count)
3253 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3254 struct Scsi_Host *shost = class_to_shost(cdev);
3255 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3258 if (!capable(CAP_SYS_ADMIN))
3262 rc = ipr_alloc_dump(ioa_cfg);
3263 else if (buf[0] == '0')
3264 rc = ipr_free_dump(ioa_cfg);
3274 static struct bin_attribute ipr_dump_attr = {
3277 .mode = S_IRUSR | S_IWUSR,
3280 .read = ipr_read_dump,
3281 .write = ipr_write_dump
3284 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3288 * ipr_change_queue_depth - Change the device's queue depth
3289 * @sdev: scsi device struct
3290 * @qdepth: depth to set
3295 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3297 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3298 struct ipr_resource_entry *res;
3299 unsigned long lock_flags = 0;
3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3302 res = (struct ipr_resource_entry *)sdev->hostdata;
3304 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3305 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3306 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3309 return sdev->queue_depth;
3313 * ipr_change_queue_type - Change the device's queue type
3314 * @dsev: scsi device struct
3315 * @tag_type: type of tags to use
3318 * actual queue type set
3320 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3323 struct ipr_resource_entry *res;
3324 unsigned long lock_flags = 0;
3326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3327 res = (struct ipr_resource_entry *)sdev->hostdata;
3330 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3332 * We don't bother quiescing the device here since the
3333 * adapter firmware does it for us.
3335 scsi_set_tag_type(sdev, tag_type);
3338 scsi_activate_tcq(sdev, sdev->queue_depth);
3340 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3351 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3352 * @dev: device struct
3356 * number of bytes printed to buffer
3358 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3360 struct scsi_device *sdev = to_scsi_device(dev);
3361 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3362 struct ipr_resource_entry *res;
3363 unsigned long lock_flags = 0;
3364 ssize_t len = -ENXIO;
3366 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3367 res = (struct ipr_resource_entry *)sdev->hostdata;
3369 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374 static struct device_attribute ipr_adapter_handle_attr = {
3376 .name = "adapter_handle",
3379 .show = ipr_show_adapter_handle
3382 static struct device_attribute *ipr_dev_attrs[] = {
3383 &ipr_adapter_handle_attr,
3388 * ipr_biosparam - Return the HSC mapping
3389 * @sdev: scsi device struct
3390 * @block_device: block device pointer
3391 * @capacity: capacity of the device
3392 * @parm: Array containing returned HSC values.
3394 * This function generates the HSC parms that fdisk uses.
3395 * We want to make sure we return something that places partitions
3396 * on 4k boundaries for best performance with the IOA.
3401 static int ipr_biosparam(struct scsi_device *sdev,
3402 struct block_device *block_device,
3403 sector_t capacity, int *parm)
3411 cylinders = capacity;
3412 sector_div(cylinders, (128 * 32));
3417 parm[2] = cylinders;
3423 * ipr_find_starget - Find target based on bus/target.
3424 * @starget: scsi target struct
3427 * resource entry pointer if found / NULL if not found
3429 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3431 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3432 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3433 struct ipr_resource_entry *res;
3435 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3436 if ((res->cfgte.res_addr.bus == starget->channel) &&
3437 (res->cfgte.res_addr.target == starget->id) &&
3438 (res->cfgte.res_addr.lun == 0)) {
3446 static struct ata_port_info sata_port_info;
3449 * ipr_target_alloc - Prepare for commands to a SCSI target
3450 * @starget: scsi target struct
3452 * If the device is a SATA device, this function allocates an
3453 * ATA port with libata, else it does nothing.
3456 * 0 on success / non-0 on failure
3458 static int ipr_target_alloc(struct scsi_target *starget)
3460 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3462 struct ipr_sata_port *sata_port;
3463 struct ata_port *ap;
3464 struct ipr_resource_entry *res;
3465 unsigned long lock_flags;
3467 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3468 res = ipr_find_starget(starget);
3469 starget->hostdata = NULL;
3471 if (res && ipr_is_gata(res)) {
3472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3473 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3477 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3479 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3480 sata_port->ioa_cfg = ioa_cfg;
3482 sata_port->res = res;
3484 res->sata_port = sata_port;
3485 ap->private_data = sata_port;
3486 starget->hostdata = sata_port;
3492 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3498 * ipr_target_destroy - Destroy a SCSI target
3499 * @starget: scsi target struct
3501 * If the device was a SATA device, this function frees the libata
3502 * ATA port, else it does nothing.
3505 static void ipr_target_destroy(struct scsi_target *starget)
3507 struct ipr_sata_port *sata_port = starget->hostdata;
3510 starget->hostdata = NULL;
3511 ata_sas_port_destroy(sata_port->ap);
3517 * ipr_find_sdev - Find device based on bus/target/lun.
3518 * @sdev: scsi device struct
3521 * resource entry pointer if found / NULL if not found
3523 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3525 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3526 struct ipr_resource_entry *res;
3528 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3529 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3530 (res->cfgte.res_addr.target == sdev->id) &&
3531 (res->cfgte.res_addr.lun == sdev->lun))
3539 * ipr_slave_destroy - Unconfigure a SCSI device
3540 * @sdev: scsi device struct
3545 static void ipr_slave_destroy(struct scsi_device *sdev)
3547 struct ipr_resource_entry *res;
3548 struct ipr_ioa_cfg *ioa_cfg;
3549 unsigned long lock_flags = 0;
3551 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3554 res = (struct ipr_resource_entry *) sdev->hostdata;
3557 ata_port_disable(res->sata_port->ap);
3558 sdev->hostdata = NULL;
3560 res->sata_port = NULL;
3562 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3566 * ipr_slave_configure - Configure a SCSI device
3567 * @sdev: scsi device struct
3569 * This function configures the specified scsi device.
3574 static int ipr_slave_configure(struct scsi_device *sdev)
3576 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3577 struct ipr_resource_entry *res;
3578 unsigned long lock_flags = 0;
3580 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3581 res = sdev->hostdata;
3583 if (ipr_is_af_dasd_device(res))
3584 sdev->type = TYPE_RAID;
3585 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3586 sdev->scsi_level = 4;
3587 sdev->no_uld_attach = 1;
3589 if (ipr_is_vset_device(res)) {
3590 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3591 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3593 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3594 sdev->allow_restart = 1;
3595 if (ipr_is_gata(res) && res->sata_port) {
3596 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3597 ata_sas_slave_configure(sdev, res->sata_port->ap);
3599 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3607 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3608 * @sdev: scsi device struct
3610 * This function initializes an ATA port so that future commands
3611 * sent through queuecommand will work.
3616 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3618 struct ipr_sata_port *sata_port = NULL;
3622 if (sdev->sdev_target)
3623 sata_port = sdev->sdev_target->hostdata;
3625 rc = ata_sas_port_init(sata_port->ap);
3627 ipr_slave_destroy(sdev);
3634 * ipr_slave_alloc - Prepare for commands to a device.
3635 * @sdev: scsi device struct
3637 * This function saves a pointer to the resource entry
3638 * in the scsi device struct if the device exists. We
3639 * can then use this pointer in ipr_queuecommand when
3640 * handling new commands.
3643 * 0 on success / -ENXIO if device does not exist
3645 static int ipr_slave_alloc(struct scsi_device *sdev)
3647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3648 struct ipr_resource_entry *res;
3649 unsigned long lock_flags;
3652 sdev->hostdata = NULL;
3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3656 res = ipr_find_sdev(sdev);
3661 sdev->hostdata = res;
3662 if (!ipr_is_naca_model(res))
3663 res->needs_sync_complete = 1;
3665 if (ipr_is_gata(res)) {
3666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3667 return ipr_ata_slave_alloc(sdev);
3671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3677 * ipr_eh_host_reset - Reset the host adapter
3678 * @scsi_cmd: scsi command struct
3683 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3685 struct ipr_ioa_cfg *ioa_cfg;
3689 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3691 dev_err(&ioa_cfg->pdev->dev,
3692 "Adapter being reset as a result of error recovery.\n");
3694 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3695 ioa_cfg->sdt_state = GET_DUMP;
3697 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3703 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3707 spin_lock_irq(cmd->device->host->host_lock);
3708 rc = __ipr_eh_host_reset(cmd);
3709 spin_unlock_irq(cmd->device->host->host_lock);
3715 * ipr_device_reset - Reset the device
3716 * @ioa_cfg: ioa config struct
3717 * @res: resource entry struct
3719 * This function issues a device reset to the affected device.
3720 * If the device is a SCSI device, a LUN reset will be sent
3721 * to the device first. If that does not work, a target reset
3722 * will be sent. If the device is a SATA device, a PHY reset will
3726 * 0 on success / non-zero on failure
3728 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3729 struct ipr_resource_entry *res)
3731 struct ipr_cmnd *ipr_cmd;
3732 struct ipr_ioarcb *ioarcb;
3733 struct ipr_cmd_pkt *cmd_pkt;
3734 struct ipr_ioarcb_ata_regs *regs;
3738 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3739 ioarcb = &ipr_cmd->ioarcb;
3740 cmd_pkt = &ioarcb->cmd_pkt;
3741 regs = &ioarcb->add_data.u.regs;
3743 ioarcb->res_handle = res->cfgte.res_handle;
3744 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3745 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3746 if (ipr_is_gata(res)) {
3747 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3748 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3749 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3752 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3753 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3755 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3756 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3757 sizeof(struct ipr_ioasa_gata));
3760 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3764 * ipr_sata_reset - Reset the SATA port
3765 * @ap: SATA port to reset
3766 * @classes: class of the attached device
3768 * This function issues a SATA phy reset to the affected ATA port.
3771 * 0 on success / non-zero on failure
3773 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3775 struct ipr_sata_port *sata_port = ap->private_data;
3776 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3777 struct ipr_resource_entry *res;
3778 unsigned long lock_flags = 0;
3782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3783 while(ioa_cfg->in_reset_reload) {
3784 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3785 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3786 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3789 res = sata_port->res;
3791 rc = ipr_device_reset(ioa_cfg, res);
3792 switch(res->cfgte.proto) {
3793 case IPR_PROTO_SATA:
3794 case IPR_PROTO_SAS_STP:
3795 *classes = ATA_DEV_ATA;
3797 case IPR_PROTO_SATA_ATAPI:
3798 case IPR_PROTO_SAS_STP_ATAPI:
3799 *classes = ATA_DEV_ATAPI;
3802 *classes = ATA_DEV_UNKNOWN;
3807 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3813 * ipr_eh_dev_reset - Reset the device
3814 * @scsi_cmd: scsi command struct
3816 * This function issues a device reset to the affected device.
3817 * A LUN reset will be sent to the device first. If that does
3818 * not work, a target reset will be sent.
3823 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3825 struct ipr_cmnd *ipr_cmd;
3826 struct ipr_ioa_cfg *ioa_cfg;
3827 struct ipr_resource_entry *res;
3828 struct ata_port *ap;
3832 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3833 res = scsi_cmd->device->hostdata;
3839 * If we are currently going through reset/reload, return failed. This will force the
3840 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3843 if (ioa_cfg->in_reset_reload)
3845 if (ioa_cfg->ioa_is_dead)
3848 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3849 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3850 if (ipr_cmd->scsi_cmd)
3851 ipr_cmd->done = ipr_scsi_eh_done;
3852 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3853 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3854 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3859 res->resetting_device = 1;
3860 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3862 if (ipr_is_gata(res) && res->sata_port) {
3863 ap = res->sata_port->ap;
3864 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3865 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3866 spin_lock_irq(scsi_cmd->device->host->host_lock);
3868 rc = ipr_device_reset(ioa_cfg, res);
3869 res->resetting_device = 0;
3872 return (rc ? FAILED : SUCCESS);
3875 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3879 spin_lock_irq(cmd->device->host->host_lock);
3880 rc = __ipr_eh_dev_reset(cmd);
3881 spin_unlock_irq(cmd->device->host->host_lock);
3887 * ipr_bus_reset_done - Op done function for bus reset.
3888 * @ipr_cmd: ipr command struct
3890 * This function is the op done function for a bus reset
3895 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3898 struct ipr_resource_entry *res;
3901 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3902 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3903 sizeof(res->cfgte.res_handle))) {
3904 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3910 * If abort has not completed, indicate the reset has, else call the
3911 * abort's done function to wake the sleeping eh thread
3913 if (ipr_cmd->sibling->sibling)
3914 ipr_cmd->sibling->sibling = NULL;
3916 ipr_cmd->sibling->done(ipr_cmd->sibling);
3918 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3923 * ipr_abort_timeout - An abort task has timed out
3924 * @ipr_cmd: ipr command struct
3926 * This function handles when an abort task times out. If this
3927 * happens we issue a bus reset since we have resources tied
3928 * up that must be freed before returning to the midlayer.
3933 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3935 struct ipr_cmnd *reset_cmd;
3936 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3937 struct ipr_cmd_pkt *cmd_pkt;
3938 unsigned long lock_flags = 0;
3941 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3942 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3947 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
3948 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3949 ipr_cmd->sibling = reset_cmd;
3950 reset_cmd->sibling = ipr_cmd;
3951 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3952 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3953 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3954 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3955 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3957 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3963 * ipr_cancel_op - Cancel specified op
3964 * @scsi_cmd: scsi command struct
3966 * This function cancels specified op.
3971 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3973 struct ipr_cmnd *ipr_cmd;
3974 struct ipr_ioa_cfg *ioa_cfg;
3975 struct ipr_resource_entry *res;
3976 struct ipr_cmd_pkt *cmd_pkt;
3981 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3982 res = scsi_cmd->device->hostdata;
3984 /* If we are currently going through reset/reload, return failed.
3985 * This will force the mid-layer to call ipr_eh_host_reset,
3986 * which will then go to sleep and wait for the reset to complete
3988 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3990 if (!res || !ipr_is_gscsi(res))
3993 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3994 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3995 ipr_cmd->done = ipr_scsi_eh_done;
4004 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4005 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4006 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4007 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4008 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4009 ipr_cmd->u.sdev = scsi_cmd->device;
4011 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4013 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4014 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4017 * If the abort task timed out and we sent a bus reset, we will get
4018 * one the following responses to the abort
4020 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4025 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4026 if (!ipr_is_naca_model(res))
4027 res->needs_sync_complete = 1;
4030 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4034 * ipr_eh_abort - Abort a single op
4035 * @scsi_cmd: scsi command struct
4040 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4042 unsigned long flags;
4047 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4048 rc = ipr_cancel_op(scsi_cmd);
4049 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4056 * ipr_handle_other_interrupt - Handle "other" interrupts
4057 * @ioa_cfg: ioa config struct
4058 * @int_reg: interrupt register
4061 * IRQ_NONE / IRQ_HANDLED
4063 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4064 volatile u32 int_reg)
4066 irqreturn_t rc = IRQ_HANDLED;
4068 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4069 /* Mask the interrupt */
4070 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4072 /* Clear the interrupt */
4073 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4074 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4076 list_del(&ioa_cfg->reset_cmd->queue);
4077 del_timer(&ioa_cfg->reset_cmd->timer);
4078 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4080 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4081 ioa_cfg->ioa_unit_checked = 1;
4083 dev_err(&ioa_cfg->pdev->dev,
4084 "Permanent IOA failure. 0x%08X\n", int_reg);
4086 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4087 ioa_cfg->sdt_state = GET_DUMP;
4089 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4090 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4097 * ipr_isr - Interrupt service routine
4099 * @devp: pointer to ioa config struct
4102 * IRQ_NONE / IRQ_HANDLED
4104 static irqreturn_t ipr_isr(int irq, void *devp)
4106 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4107 unsigned long lock_flags = 0;
4108 volatile u32 int_reg, int_mask_reg;
4111 struct ipr_cmnd *ipr_cmd;
4112 irqreturn_t rc = IRQ_NONE;
4114 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4116 /* If interrupts are disabled, ignore the interrupt */
4117 if (!ioa_cfg->allow_interrupts) {
4118 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4122 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4123 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4125 /* If an interrupt on the adapter did not occur, ignore it */
4126 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4134 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4135 ioa_cfg->toggle_bit) {
4137 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4138 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4140 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4141 ioa_cfg->errors_logged++;
4142 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4144 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4145 ioa_cfg->sdt_state = GET_DUMP;
4147 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4148 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4152 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4154 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4156 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4158 list_del(&ipr_cmd->queue);
4159 del_timer(&ipr_cmd->timer);
4160 ipr_cmd->done(ipr_cmd);
4164 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4165 ioa_cfg->hrrq_curr++;
4167 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4168 ioa_cfg->toggle_bit ^= 1u;
4172 if (ipr_cmd != NULL) {
4173 /* Clear the PCI interrupt */
4174 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4175 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4180 if (unlikely(rc == IRQ_NONE))
4181 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4188 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4189 * @ioa_cfg: ioa config struct
4190 * @ipr_cmd: ipr command struct
4193 * 0 on success / -1 on failure
4195 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4196 struct ipr_cmnd *ipr_cmd)
4199 struct scatterlist *sglist;
4201 u32 ioadl_flags = 0;
4202 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4203 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4204 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4206 length = scsi_cmd->request_bufflen;
4211 if (scsi_cmd->use_sg) {
4212 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4213 scsi_cmd->request_buffer,
4215 scsi_cmd->sc_data_direction);
4217 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4218 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4219 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4220 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4221 ioarcb->write_ioadl_len =
4222 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4223 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4224 ioadl_flags = IPR_IOADL_FLAGS_READ;
4225 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4226 ioarcb->read_ioadl_len =
4227 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4230 sglist = scsi_cmd->request_buffer;
4232 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4233 ioadl[i].flags_and_data_len =
4234 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4236 cpu_to_be32(sg_dma_address(&sglist[i]));
4239 if (likely(ipr_cmd->dma_use_sg)) {
4240 ioadl[i-1].flags_and_data_len |=
4241 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4244 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4246 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4247 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4248 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4249 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4250 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4251 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4252 ioadl_flags = IPR_IOADL_FLAGS_READ;
4253 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4254 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4257 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4258 scsi_cmd->request_buffer, length,
4259 scsi_cmd->sc_data_direction);
4261 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4262 ipr_cmd->dma_use_sg = 1;
4263 ioadl[0].flags_and_data_len =
4264 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4265 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4268 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4275 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4276 * @scsi_cmd: scsi command struct
4281 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4284 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4286 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4288 case MSG_SIMPLE_TAG:
4289 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4292 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4294 case MSG_ORDERED_TAG:
4295 rc = IPR_FLAGS_LO_ORDERED_TASK;
4304 * ipr_erp_done - Process completion of ERP for a device
4305 * @ipr_cmd: ipr command struct
4307 * This function copies the sense buffer into the scsi_cmd
4308 * struct and pushes the scsi_done function.
4313 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4315 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4316 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4317 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4318 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4320 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4321 scsi_cmd->result |= (DID_ERROR << 16);
4322 scmd_printk(KERN_ERR, scsi_cmd,
4323 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4325 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4326 SCSI_SENSE_BUFFERSIZE);
4330 if (!ipr_is_naca_model(res))
4331 res->needs_sync_complete = 1;
4334 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4335 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4336 scsi_cmd->scsi_done(scsi_cmd);
4340 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4341 * @ipr_cmd: ipr command struct
4346 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4348 struct ipr_ioarcb *ioarcb;
4349 struct ipr_ioasa *ioasa;
4351 ioarcb = &ipr_cmd->ioarcb;
4352 ioasa = &ipr_cmd->ioasa;
4354 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4355 ioarcb->write_data_transfer_length = 0;
4356 ioarcb->read_data_transfer_length = 0;
4357 ioarcb->write_ioadl_len = 0;
4358 ioarcb->read_ioadl_len = 0;
4360 ioasa->residual_data_len = 0;
4364 * ipr_erp_request_sense - Send request sense to a device
4365 * @ipr_cmd: ipr command struct
4367 * This function sends a request sense to a device as a result
4368 * of a check condition.
4373 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4375 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4376 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4378 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4379 ipr_erp_done(ipr_cmd);
4383 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4385 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4386 cmd_pkt->cdb[0] = REQUEST_SENSE;
4387 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4388 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4389 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4390 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4392 ipr_cmd->ioadl[0].flags_and_data_len =
4393 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4394 ipr_cmd->ioadl[0].address =
4395 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4397 ipr_cmd->ioarcb.read_ioadl_len =
4398 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4399 ipr_cmd->ioarcb.read_data_transfer_length =
4400 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4402 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4403 IPR_REQUEST_SENSE_TIMEOUT * 2);
4407 * ipr_erp_cancel_all - Send cancel all to a device
4408 * @ipr_cmd: ipr command struct
4410 * This function sends a cancel all to a device to clear the
4411 * queue. If we are running TCQ on the device, QERR is set to 1,
4412 * which means all outstanding ops have been dropped on the floor.
4413 * Cancel all will return them to us.
4418 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4420 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4421 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4422 struct ipr_cmd_pkt *cmd_pkt;
4426 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4428 if (!scsi_get_tag_type(scsi_cmd->device)) {
4429 ipr_erp_request_sense(ipr_cmd);
4433 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4434 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4435 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4437 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4438 IPR_CANCEL_ALL_TIMEOUT);
4442 * ipr_dump_ioasa - Dump contents of IOASA
4443 * @ioa_cfg: ioa config struct
4444 * @ipr_cmd: ipr command struct
4445 * @res: resource entry struct
4447 * This function is invoked by the interrupt handler when ops
4448 * fail. It will log the IOASA if appropriate. Only called
4454 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4455 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4460 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4461 __be32 *ioasa_data = (__be32 *)ioasa;
4464 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4469 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4472 error_index = ipr_get_error(ioasc);
4474 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4475 /* Don't log an error if the IOA already logged one */
4476 if (ioasa->ilid != 0)
4479 if (ipr_error_table[error_index].log_ioasa == 0)
4483 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4485 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4486 data_len = sizeof(struct ipr_ioasa);
4488 data_len = be16_to_cpu(ioasa->ret_stat_len);
4490 ipr_err("IOASA Dump:\n");
4492 for (i = 0; i < data_len / 4; i += 4) {
4493 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4494 be32_to_cpu(ioasa_data[i]),
4495 be32_to_cpu(ioasa_data[i+1]),
4496 be32_to_cpu(ioasa_data[i+2]),
4497 be32_to_cpu(ioasa_data[i+3]));
4502 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4504 * @sense_buf: sense data buffer
4509 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4512 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4513 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4514 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4515 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4517 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4519 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4522 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4524 if (ipr_is_vset_device(res) &&
4525 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4526 ioasa->u.vset.failing_lba_hi != 0) {
4527 sense_buf[0] = 0x72;
4528 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4529 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4530 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4534 sense_buf[9] = 0x0A;
4535 sense_buf[10] = 0x80;
4537 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4539 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4540 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4541 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4542 sense_buf[15] = failing_lba & 0x000000ff;
4544 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4546 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4547 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4548 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4549 sense_buf[19] = failing_lba & 0x000000ff;
4551 sense_buf[0] = 0x70;
4552 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4553 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4554 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4556 /* Illegal request */
4557 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4558 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4559 sense_buf[7] = 10; /* additional length */
4561 /* IOARCB was in error */
4562 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4563 sense_buf[15] = 0xC0;
4564 else /* Parameter data was invalid */
4565 sense_buf[15] = 0x80;
4568 ((IPR_FIELD_POINTER_MASK &
4569 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4571 (IPR_FIELD_POINTER_MASK &
4572 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4574 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4575 if (ipr_is_vset_device(res))
4576 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4578 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4580 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4581 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4582 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4583 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4584 sense_buf[6] = failing_lba & 0x000000ff;
4587 sense_buf[7] = 6; /* additional length */
4593 * ipr_get_autosense - Copy autosense data to sense buffer
4594 * @ipr_cmd: ipr command struct
4596 * This function copies the autosense buffer to the buffer
4597 * in the scsi_cmd, if there is autosense available.
4600 * 1 if autosense was available / 0 if not
4602 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4604 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4606 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4609 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4610 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4611 SCSI_SENSE_BUFFERSIZE));
4616 * ipr_erp_start - Process an error response for a SCSI op
4617 * @ioa_cfg: ioa config struct
4618 * @ipr_cmd: ipr command struct
4620 * This function determines whether or not to initiate ERP
4621 * on the affected device.
4626 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4627 struct ipr_cmnd *ipr_cmd)
4629 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4630 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4631 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4634 ipr_scsi_eh_done(ipr_cmd);
4638 if (ipr_is_gscsi(res))
4639 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4641 ipr_gen_sense(ipr_cmd);
4643 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4644 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4645 if (ipr_is_naca_model(res))
4646 scsi_cmd->result |= (DID_ABORT << 16);
4648 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4650 case IPR_IOASC_IR_RESOURCE_HANDLE:
4651 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4652 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4654 case IPR_IOASC_HW_SEL_TIMEOUT:
4655 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4656 if (!ipr_is_naca_model(res))
4657 res->needs_sync_complete = 1;
4659 case IPR_IOASC_SYNC_REQUIRED:
4661 res->needs_sync_complete = 1;
4662 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4664 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4665 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4666 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4668 case IPR_IOASC_BUS_WAS_RESET:
4669 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4671 * Report the bus reset and ask for a retry. The device
4672 * will give CC/UA the next command.
4674 if (!res->resetting_device)
4675 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4676 scsi_cmd->result |= (DID_ERROR << 16);
4677 if (!ipr_is_naca_model(res))
4678 res->needs_sync_complete = 1;
4680 case IPR_IOASC_HW_DEV_BUS_STATUS:
4681 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4682 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4683 if (!ipr_get_autosense(ipr_cmd)) {
4684 if (!ipr_is_naca_model(res)) {
4685 ipr_erp_cancel_all(ipr_cmd);
4690 if (!ipr_is_naca_model(res))
4691 res->needs_sync_complete = 1;
4693 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4696 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4697 scsi_cmd->result |= (DID_ERROR << 16);
4698 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4699 res->needs_sync_complete = 1;
4703 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4704 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4705 scsi_cmd->scsi_done(scsi_cmd);
4709 * ipr_scsi_done - mid-layer done function
4710 * @ipr_cmd: ipr command struct
4712 * This function is invoked by the interrupt handler for
4713 * ops generated by the SCSI mid-layer
4718 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4724 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4726 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4727 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4728 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4729 scsi_cmd->scsi_done(scsi_cmd);
4731 ipr_erp_start(ioa_cfg, ipr_cmd);
4735 * ipr_queuecommand - Queue a mid-layer request
4736 * @scsi_cmd: scsi command struct
4737 * @done: done function
4739 * This function queues a request generated by the mid-layer.
4743 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4744 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4746 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4747 void (*done) (struct scsi_cmnd *))
4749 struct ipr_ioa_cfg *ioa_cfg;
4750 struct ipr_resource_entry *res;
4751 struct ipr_ioarcb *ioarcb;
4752 struct ipr_cmnd *ipr_cmd;
4755 scsi_cmd->scsi_done = done;
4756 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4757 res = scsi_cmd->device->hostdata;
4758 scsi_cmd->result = (DID_OK << 16);
4761 * We are currently blocking all devices due to a host reset
4762 * We have told the host to stop giving us new requests, but
4763 * ERP ops don't count. FIXME
4765 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4766 return SCSI_MLQUEUE_HOST_BUSY;
4769 * FIXME - Create scsi_set_host_offline interface
4770 * and the ioa_is_dead check can be removed
4772 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4773 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4774 scsi_cmd->result = (DID_NO_CONNECT << 16);
4775 scsi_cmd->scsi_done(scsi_cmd);
4779 if (ipr_is_gata(res) && res->sata_port)
4780 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4782 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4783 ioarcb = &ipr_cmd->ioarcb;
4784 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4786 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4787 ipr_cmd->scsi_cmd = scsi_cmd;
4788 ioarcb->res_handle = res->cfgte.res_handle;
4789 ipr_cmd->done = ipr_scsi_done;
4790 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4792 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4793 if (scsi_cmd->underflow == 0)
4794 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4796 if (res->needs_sync_complete) {
4797 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4798 res->needs_sync_complete = 0;
4801 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4802 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4803 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4804 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4807 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4808 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4809 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4811 if (likely(rc == 0))
4812 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4814 if (likely(rc == 0)) {
4816 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4817 ioa_cfg->regs.ioarrin_reg);
4819 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4820 return SCSI_MLQUEUE_HOST_BUSY;
4827 * ipr_ioctl - IOCTL handler
4828 * @sdev: scsi device struct
4833 * 0 on success / other on failure
4835 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4837 struct ipr_resource_entry *res;
4839 res = (struct ipr_resource_entry *)sdev->hostdata;
4840 if (res && ipr_is_gata(res))
4841 return ata_scsi_ioctl(sdev, cmd, arg);
4847 * ipr_info - Get information about the card/driver
4848 * @scsi_host: scsi host struct
4851 * pointer to buffer with description string
4853 static const char * ipr_ioa_info(struct Scsi_Host *host)
4855 static char buffer[512];
4856 struct ipr_ioa_cfg *ioa_cfg;
4857 unsigned long lock_flags = 0;
4859 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4861 spin_lock_irqsave(host->host_lock, lock_flags);
4862 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4863 spin_unlock_irqrestore(host->host_lock, lock_flags);
4868 static struct scsi_host_template driver_template = {
4869 .module = THIS_MODULE,
4871 .info = ipr_ioa_info,
4873 .queuecommand = ipr_queuecommand,
4874 .eh_abort_handler = ipr_eh_abort,
4875 .eh_device_reset_handler = ipr_eh_dev_reset,
4876 .eh_host_reset_handler = ipr_eh_host_reset,
4877 .slave_alloc = ipr_slave_alloc,
4878 .slave_configure = ipr_slave_configure,
4879 .slave_destroy = ipr_slave_destroy,
4880 .target_alloc = ipr_target_alloc,
4881 .target_destroy = ipr_target_destroy,
4882 .change_queue_depth = ipr_change_queue_depth,
4883 .change_queue_type = ipr_change_queue_type,
4884 .bios_param = ipr_biosparam,
4885 .can_queue = IPR_MAX_COMMANDS,
4887 .sg_tablesize = IPR_MAX_SGLIST,
4888 .max_sectors = IPR_IOA_MAX_SECTORS,
4889 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4890 .use_clustering = ENABLE_CLUSTERING,
4891 .shost_attrs = ipr_ioa_attrs,
4892 .sdev_attrs = ipr_dev_attrs,
4893 .proc_name = IPR_NAME
4897 * ipr_ata_phy_reset - libata phy_reset handler
4898 * @ap: ata port to reset
4901 static void ipr_ata_phy_reset(struct ata_port *ap)
4903 unsigned long flags;
4904 struct ipr_sata_port *sata_port = ap->private_data;
4905 struct ipr_resource_entry *res = sata_port->res;
4906 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4910 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4911 while(ioa_cfg->in_reset_reload) {
4912 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4913 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4914 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4917 if (!ioa_cfg->allow_cmds)
4920 rc = ipr_device_reset(ioa_cfg, res);
4923 ap->ops->port_disable(ap);
4927 switch(res->cfgte.proto) {
4928 case IPR_PROTO_SATA:
4929 case IPR_PROTO_SAS_STP:
4930 ap->device[0].class = ATA_DEV_ATA;
4932 case IPR_PROTO_SATA_ATAPI:
4933 case IPR_PROTO_SAS_STP_ATAPI:
4934 ap->device[0].class = ATA_DEV_ATAPI;
4937 ap->device[0].class = ATA_DEV_UNKNOWN;
4938 ap->ops->port_disable(ap);
4943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4948 * ipr_ata_post_internal - Cleanup after an internal command
4949 * @qc: ATA queued command
4954 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4956 struct ipr_sata_port *sata_port = qc->ap->private_data;
4957 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4958 struct ipr_cmnd *ipr_cmd;
4959 unsigned long flags;
4961 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4962 while(ioa_cfg->in_reset_reload) {
4963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4964 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4965 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4968 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4969 if (ipr_cmd->qc == qc) {
4970 ipr_device_reset(ioa_cfg, sata_port->res);
4974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4978 * ipr_tf_read - Read the current ATA taskfile for the ATA port
4980 * @tf: destination ATA taskfile
4985 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
4987 struct ipr_sata_port *sata_port = ap->private_data;
4988 struct ipr_ioasa_gata *g = &sata_port->ioasa;
4990 tf->feature = g->error;
4991 tf->nsect = g->nsect;
4995 tf->device = g->device;
4996 tf->command = g->status;
4997 tf->hob_nsect = g->hob_nsect;
4998 tf->hob_lbal = g->hob_lbal;
4999 tf->hob_lbam = g->hob_lbam;
5000 tf->hob_lbah = g->hob_lbah;
5001 tf->ctl = g->alt_status;
5005 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5006 * @regs: destination
5007 * @tf: source ATA taskfile
5012 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5013 struct ata_taskfile *tf)
5015 regs->feature = tf->feature;
5016 regs->nsect = tf->nsect;
5017 regs->lbal = tf->lbal;
5018 regs->lbam = tf->lbam;
5019 regs->lbah = tf->lbah;
5020 regs->device = tf->device;
5021 regs->command = tf->command;
5022 regs->hob_feature = tf->hob_feature;
5023 regs->hob_nsect = tf->hob_nsect;
5024 regs->hob_lbal = tf->hob_lbal;
5025 regs->hob_lbam = tf->hob_lbam;
5026 regs->hob_lbah = tf->hob_lbah;
5027 regs->ctl = tf->ctl;
5031 * ipr_sata_done - done function for SATA commands
5032 * @ipr_cmd: ipr command struct
5034 * This function is invoked by the interrupt handler for
5035 * ops generated by the SCSI mid-layer to SATA devices
5040 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5042 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5043 struct ata_queued_cmd *qc = ipr_cmd->qc;
5044 struct ipr_sata_port *sata_port = qc->ap->private_data;
5045 struct ipr_resource_entry *res = sata_port->res;
5046 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5048 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5049 sizeof(struct ipr_ioasa_gata));
5050 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5052 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5053 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5054 res->cfgte.res_addr.target);
5056 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5057 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5059 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5060 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5061 ata_qc_complete(qc);
5065 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5066 * @ipr_cmd: ipr command struct
5067 * @qc: ATA queued command
5070 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5071 struct ata_queued_cmd *qc)
5073 u32 ioadl_flags = 0;
5074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5075 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5076 int len = qc->nbytes + qc->pad_len;
5077 struct scatterlist *sg;
5082 if (qc->dma_dir == DMA_TO_DEVICE) {
5083 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5084 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5085 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5086 ioarcb->write_ioadl_len =
5087 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5088 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5089 ioadl_flags = IPR_IOADL_FLAGS_READ;
5090 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5091 ioarcb->read_ioadl_len =
5092 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5095 ata_for_each_sg(sg, qc) {
5096 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5097 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5098 if (ata_sg_is_last(sg, qc))
5099 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5106 * ipr_qc_issue - Issue a SATA qc to a device
5107 * @qc: queued command
5112 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5114 struct ata_port *ap = qc->ap;
5115 struct ipr_sata_port *sata_port = ap->private_data;
5116 struct ipr_resource_entry *res = sata_port->res;
5117 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5118 struct ipr_cmnd *ipr_cmd;
5119 struct ipr_ioarcb *ioarcb;
5120 struct ipr_ioarcb_ata_regs *regs;
5122 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5125 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5126 ioarcb = &ipr_cmd->ioarcb;
5127 regs = &ioarcb->add_data.u.regs;
5129 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5130 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5132 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5134 ipr_cmd->done = ipr_sata_done;
5135 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5136 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5137 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5138 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5139 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5141 ipr_build_ata_ioadl(ipr_cmd, qc);
5142 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5143 ipr_copy_sata_tf(regs, &qc->tf);
5144 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5145 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5147 switch (qc->tf.protocol) {
5148 case ATA_PROT_NODATA:
5153 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5156 case ATA_PROT_ATAPI:
5157 case ATA_PROT_ATAPI_NODATA:
5158 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5161 case ATA_PROT_ATAPI_DMA:
5162 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5163 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5172 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5173 ioa_cfg->regs.ioarrin_reg);
5178 * ipr_ata_check_status - Return last ATA status
5184 static u8 ipr_ata_check_status(struct ata_port *ap)
5186 struct ipr_sata_port *sata_port = ap->private_data;
5187 return sata_port->ioasa.status;
5191 * ipr_ata_check_altstatus - Return last ATA altstatus
5197 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5199 struct ipr_sata_port *sata_port = ap->private_data;
5200 return sata_port->ioasa.alt_status;
5203 static struct ata_port_operations ipr_sata_ops = {
5204 .port_disable = ata_port_disable,
5205 .check_status = ipr_ata_check_status,
5206 .check_altstatus = ipr_ata_check_altstatus,
5207 .dev_select = ata_noop_dev_select,
5208 .phy_reset = ipr_ata_phy_reset,
5209 .post_internal_cmd = ipr_ata_post_internal,
5210 .tf_read = ipr_tf_read,
5211 .qc_prep = ata_noop_qc_prep,
5212 .qc_issue = ipr_qc_issue,
5213 .port_start = ata_sas_port_start,
5214 .port_stop = ata_sas_port_stop
5217 static struct ata_port_info sata_port_info = {
5218 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5219 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5220 .pio_mask = 0x10, /* pio4 */
5222 .udma_mask = 0x7f, /* udma0-6 */
5223 .port_ops = &ipr_sata_ops
5226 #ifdef CONFIG_PPC_PSERIES
5227 static const u16 ipr_blocked_processors[] = {
5239 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5240 * @ioa_cfg: ioa cfg struct
5242 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5243 * certain pSeries hardware. This function determines if the given
5244 * adapter is in one of these confgurations or not.
5247 * 1 if adapter is not supported / 0 if adapter is supported
5249 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5254 if (ioa_cfg->type == 0x5702) {
5255 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5256 &rev_id) == PCIBIOS_SUCCESSFUL) {
5258 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5259 if (__is_processor(ipr_blocked_processors[i]))
5268 #define ipr_invalid_adapter(ioa_cfg) 0
5272 * ipr_ioa_bringdown_done - IOA bring down completion.
5273 * @ipr_cmd: ipr command struct
5275 * This function processes the completion of an adapter bring down.
5276 * It wakes any reset sleepers.
5281 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5283 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5286 ioa_cfg->in_reset_reload = 0;
5287 ioa_cfg->reset_retries = 0;
5288 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5289 wake_up_all(&ioa_cfg->reset_wait_q);
5291 spin_unlock_irq(ioa_cfg->host->host_lock);
5292 scsi_unblock_requests(ioa_cfg->host);
5293 spin_lock_irq(ioa_cfg->host->host_lock);
5296 return IPR_RC_JOB_RETURN;
5300 * ipr_ioa_reset_done - IOA reset completion.
5301 * @ipr_cmd: ipr command struct
5303 * This function processes the completion of an adapter reset.
5304 * It schedules any necessary mid-layer add/removes and
5305 * wakes any reset sleepers.
5310 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5313 struct ipr_resource_entry *res;
5314 struct ipr_hostrcb *hostrcb, *temp;
5318 ioa_cfg->in_reset_reload = 0;
5319 ioa_cfg->allow_cmds = 1;
5320 ioa_cfg->reset_cmd = NULL;
5321 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5323 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5324 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5329 schedule_work(&ioa_cfg->work_q);
5331 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5332 list_del(&hostrcb->queue);
5333 if (i++ < IPR_NUM_LOG_HCAMS)
5334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5336 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5339 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5341 ioa_cfg->reset_retries = 0;
5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5343 wake_up_all(&ioa_cfg->reset_wait_q);
5345 spin_unlock_irq(ioa_cfg->host->host_lock);
5346 scsi_unblock_requests(ioa_cfg->host);
5347 spin_lock_irq(ioa_cfg->host->host_lock);
5349 if (!ioa_cfg->allow_cmds)
5350 scsi_block_requests(ioa_cfg->host);
5353 return IPR_RC_JOB_RETURN;
5357 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5358 * @supported_dev: supported device struct
5359 * @vpids: vendor product id struct
5364 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5365 struct ipr_std_inq_vpids *vpids)
5367 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5368 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5369 supported_dev->num_records = 1;
5370 supported_dev->data_length =
5371 cpu_to_be16(sizeof(struct ipr_supported_device));
5372 supported_dev->reserved = 0;
5376 * ipr_set_supported_devs - Send Set Supported Devices for a device
5377 * @ipr_cmd: ipr command struct
5379 * This function send a Set Supported Devices to the adapter
5382 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5384 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5387 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5388 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5389 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5390 struct ipr_resource_entry *res = ipr_cmd->u.res;
5392 ipr_cmd->job_step = ipr_ioa_reset_done;
5394 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5395 if (!ipr_is_scsi_disk(res))
5398 ipr_cmd->u.res = res;
5399 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5401 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5402 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5403 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5405 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5406 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5407 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5409 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5410 sizeof(struct ipr_supported_device));
5411 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5412 offsetof(struct ipr_misc_cbs, supp_dev));
5413 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5414 ioarcb->write_data_transfer_length =
5415 cpu_to_be32(sizeof(struct ipr_supported_device));
5417 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5418 IPR_SET_SUP_DEVICE_TIMEOUT);
5420 ipr_cmd->job_step = ipr_set_supported_devs;
5421 return IPR_RC_JOB_RETURN;
5424 return IPR_RC_JOB_CONTINUE;
5428 * ipr_setup_write_cache - Disable write cache if needed
5429 * @ipr_cmd: ipr command struct
5431 * This function sets up adapters write cache to desired setting
5434 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5436 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5438 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5440 ipr_cmd->job_step = ipr_set_supported_devs;
5441 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5442 struct ipr_resource_entry, queue);
5444 if (ioa_cfg->cache_state != CACHE_DISABLED)
5445 return IPR_RC_JOB_CONTINUE;
5447 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5448 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5449 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5450 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5452 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5454 return IPR_RC_JOB_RETURN;
5458 * ipr_get_mode_page - Locate specified mode page
5459 * @mode_pages: mode page buffer
5460 * @page_code: page code to find
5461 * @len: minimum required length for mode page
5464 * pointer to mode page / NULL on failure
5466 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5467 u32 page_code, u32 len)
5469 struct ipr_mode_page_hdr *mode_hdr;
5473 if (!mode_pages || (mode_pages->hdr.length == 0))
5476 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5477 mode_hdr = (struct ipr_mode_page_hdr *)
5478 (mode_pages->data + mode_pages->hdr.block_desc_len);
5481 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5482 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5486 page_length = (sizeof(struct ipr_mode_page_hdr) +
5487 mode_hdr->page_length);
5488 length -= page_length;
5489 mode_hdr = (struct ipr_mode_page_hdr *)
5490 ((unsigned long)mode_hdr + page_length);
5497 * ipr_check_term_power - Check for term power errors
5498 * @ioa_cfg: ioa config struct
5499 * @mode_pages: IOAFP mode pages buffer
5501 * Check the IOAFP's mode page 28 for term power errors
5506 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5507 struct ipr_mode_pages *mode_pages)
5511 struct ipr_dev_bus_entry *bus;
5512 struct ipr_mode_page28 *mode_page;
5514 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5515 sizeof(struct ipr_mode_page28));
5517 entry_length = mode_page->entry_length;
5519 bus = mode_page->bus;
5521 for (i = 0; i < mode_page->num_entries; i++) {
5522 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5523 dev_err(&ioa_cfg->pdev->dev,
5524 "Term power is absent on scsi bus %d\n",
5528 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5533 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5534 * @ioa_cfg: ioa config struct
5536 * Looks through the config table checking for SES devices. If
5537 * the SES device is in the SES table indicating a maximum SCSI
5538 * bus speed, the speed is limited for the bus.
5543 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5548 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5549 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5550 ioa_cfg->bus_attr[i].bus_width);
5552 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5553 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5558 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5559 * @ioa_cfg: ioa config struct
5560 * @mode_pages: mode page 28 buffer
5562 * Updates mode page 28 based on driver configuration
5567 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5568 struct ipr_mode_pages *mode_pages)
5570 int i, entry_length;
5571 struct ipr_dev_bus_entry *bus;
5572 struct ipr_bus_attributes *bus_attr;
5573 struct ipr_mode_page28 *mode_page;
5575 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5576 sizeof(struct ipr_mode_page28));
5578 entry_length = mode_page->entry_length;
5580 /* Loop for each device bus entry */
5581 for (i = 0, bus = mode_page->bus;
5582 i < mode_page->num_entries;
5583 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5584 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5585 dev_err(&ioa_cfg->pdev->dev,
5586 "Invalid resource address reported: 0x%08X\n",
5587 IPR_GET_PHYS_LOC(bus->res_addr));
5591 bus_attr = &ioa_cfg->bus_attr[i];
5592 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5593 bus->bus_width = bus_attr->bus_width;
5594 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5595 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5596 if (bus_attr->qas_enabled)
5597 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5599 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5604 * ipr_build_mode_select - Build a mode select command
5605 * @ipr_cmd: ipr command struct
5606 * @res_handle: resource handle to send command to
5607 * @parm: Byte 2 of Mode Sense command
5608 * @dma_addr: DMA buffer address
5609 * @xfer_len: data transfer length
5614 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5615 __be32 res_handle, u8 parm, u32 dma_addr,
5618 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5619 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5621 ioarcb->res_handle = res_handle;
5622 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5624 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5625 ioarcb->cmd_pkt.cdb[1] = parm;
5626 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5628 ioadl->flags_and_data_len =
5629 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5630 ioadl->address = cpu_to_be32(dma_addr);
5631 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5632 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5636 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5637 * @ipr_cmd: ipr command struct
5639 * This function sets up the SCSI bus attributes and sends
5640 * a Mode Select for Page 28 to activate them.
5645 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5648 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5652 ipr_scsi_bus_speed_limit(ioa_cfg);
5653 ipr_check_term_power(ioa_cfg, mode_pages);
5654 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5655 length = mode_pages->hdr.length + 1;
5656 mode_pages->hdr.length = 0;
5658 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5659 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5662 ipr_cmd->job_step = ipr_setup_write_cache;
5663 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5666 return IPR_RC_JOB_RETURN;
5670 * ipr_build_mode_sense - Builds a mode sense command
5671 * @ipr_cmd: ipr command struct
5672 * @res: resource entry struct
5673 * @parm: Byte 2 of mode sense command
5674 * @dma_addr: DMA address of mode sense buffer
5675 * @xfer_len: Size of DMA buffer
5680 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5682 u8 parm, u32 dma_addr, u8 xfer_len)
5684 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5685 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5687 ioarcb->res_handle = res_handle;
5688 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5689 ioarcb->cmd_pkt.cdb[2] = parm;
5690 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5693 ioadl->flags_and_data_len =
5694 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5695 ioadl->address = cpu_to_be32(dma_addr);
5696 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5697 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5701 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5702 * @ipr_cmd: ipr command struct
5704 * This function handles the failure of an IOA bringup command.
5709 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5711 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5712 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5714 dev_err(&ioa_cfg->pdev->dev,
5715 "0x%02X failed with IOASC: 0x%08X\n",
5716 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5719 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5720 return IPR_RC_JOB_RETURN;
5724 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5725 * @ipr_cmd: ipr command struct
5727 * This function handles the failure of a Mode Sense to the IOAFP.
5728 * Some adapters do not handle all mode pages.
5731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5733 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5735 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5737 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5738 ipr_cmd->job_step = ipr_setup_write_cache;
5739 return IPR_RC_JOB_CONTINUE;
5742 return ipr_reset_cmd_failed(ipr_cmd);
5746 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5747 * @ipr_cmd: ipr command struct
5749 * This function send a Page 28 mode sense to the IOA to
5750 * retrieve SCSI bus attributes.
5755 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5760 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5761 0x28, ioa_cfg->vpd_cbs_dma +
5762 offsetof(struct ipr_misc_cbs, mode_pages),
5763 sizeof(struct ipr_mode_pages));
5765 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5766 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5771 return IPR_RC_JOB_RETURN;
5775 * ipr_init_res_table - Initialize the resource table
5776 * @ipr_cmd: ipr command struct
5778 * This function looks through the existing resource table, comparing
5779 * it with the config table. This function will take care of old/new
5780 * devices and schedule adding/removing them from the mid-layer
5784 * IPR_RC_JOB_CONTINUE
5786 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5789 struct ipr_resource_entry *res, *temp;
5790 struct ipr_config_table_entry *cfgte;
5795 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5796 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5798 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5799 list_move_tail(&res->queue, &old_res);
5801 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5802 cfgte = &ioa_cfg->cfg_table->dev[i];
5805 list_for_each_entry_safe(res, temp, &old_res, queue) {
5806 if (!memcmp(&res->cfgte.res_addr,
5807 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5808 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5815 if (list_empty(&ioa_cfg->free_res_q)) {
5816 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5821 res = list_entry(ioa_cfg->free_res_q.next,
5822 struct ipr_resource_entry, queue);
5823 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5824 ipr_init_res_entry(res);
5829 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5832 list_for_each_entry_safe(res, temp, &old_res, queue) {
5834 res->del_from_ml = 1;
5835 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5836 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5838 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5842 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5845 return IPR_RC_JOB_CONTINUE;
5849 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5850 * @ipr_cmd: ipr command struct
5852 * This function sends a Query IOA Configuration command
5853 * to the adapter to retrieve the IOA configuration table.
5858 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5860 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5861 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5862 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5863 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5866 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5867 ucode_vpd->major_release, ucode_vpd->card_type,
5868 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5869 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5870 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5872 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5873 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5874 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5876 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5877 ioarcb->read_data_transfer_length =
5878 cpu_to_be32(sizeof(struct ipr_config_table));
5880 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5881 ioadl->flags_and_data_len =
5882 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5884 ipr_cmd->job_step = ipr_init_res_table;
5886 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5889 return IPR_RC_JOB_RETURN;
5893 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5894 * @ipr_cmd: ipr command struct
5896 * This utility function sends an inquiry to the adapter.
5901 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5902 u32 dma_addr, u8 xfer_len)
5904 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5905 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5908 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5909 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5911 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5912 ioarcb->cmd_pkt.cdb[1] = flags;
5913 ioarcb->cmd_pkt.cdb[2] = page;
5914 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5916 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5917 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5919 ioadl->address = cpu_to_be32(dma_addr);
5920 ioadl->flags_and_data_len =
5921 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5923 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5928 * ipr_inquiry_page_supported - Is the given inquiry page supported
5929 * @page0: inquiry page 0 buffer
5932 * This function determines if the specified inquiry page is supported.
5935 * 1 if page is supported / 0 if not
5937 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5941 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5942 if (page0->page[i] == page)
5949 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5950 * @ipr_cmd: ipr command struct
5952 * This function sends a Page 3 inquiry to the adapter
5953 * to retrieve software VPD information.
5956 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5958 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5960 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5961 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5965 if (!ipr_inquiry_page_supported(page0, 1))
5966 ioa_cfg->cache_state = CACHE_NONE;
5968 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5970 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5971 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5972 sizeof(struct ipr_inquiry_page3));
5975 return IPR_RC_JOB_RETURN;
5979 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5980 * @ipr_cmd: ipr command struct
5982 * This function sends a Page 0 inquiry to the adapter
5983 * to retrieve supported inquiry pages.
5986 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5988 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5990 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5995 /* Grab the type out of the VPD and store it away */
5996 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5998 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6000 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6002 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6003 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6004 sizeof(struct ipr_inquiry_page0));
6007 return IPR_RC_JOB_RETURN;
6011 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6012 * @ipr_cmd: ipr command struct
6014 * This function sends a standard inquiry to the adapter.
6019 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6021 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6024 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6026 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6027 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6028 sizeof(struct ipr_ioa_vpd));
6031 return IPR_RC_JOB_RETURN;
6035 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6036 * @ipr_cmd: ipr command struct
6038 * This function send an Identify Host Request Response Queue
6039 * command to establish the HRRQ with the adapter.
6044 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6047 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6050 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6052 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6053 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6055 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6056 ioarcb->cmd_pkt.cdb[2] =
6057 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6058 ioarcb->cmd_pkt.cdb[3] =
6059 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6060 ioarcb->cmd_pkt.cdb[4] =
6061 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6062 ioarcb->cmd_pkt.cdb[5] =
6063 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6064 ioarcb->cmd_pkt.cdb[7] =
6065 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6066 ioarcb->cmd_pkt.cdb[8] =
6067 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6069 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6071 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6074 return IPR_RC_JOB_RETURN;
6078 * ipr_reset_timer_done - Adapter reset timer function
6079 * @ipr_cmd: ipr command struct
6081 * Description: This function is used in adapter reset processing
6082 * for timing events. If the reset_cmd pointer in the IOA
6083 * config struct is not this adapter's we are doing nested
6084 * resets and fail_all_ops will take care of freeing the
6090 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6092 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6093 unsigned long lock_flags = 0;
6095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6097 if (ioa_cfg->reset_cmd == ipr_cmd) {
6098 list_del(&ipr_cmd->queue);
6099 ipr_cmd->done(ipr_cmd);
6102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6106 * ipr_reset_start_timer - Start a timer for adapter reset job
6107 * @ipr_cmd: ipr command struct
6108 * @timeout: timeout value
6110 * Description: This function is used in adapter reset processing
6111 * for timing events. If the reset_cmd pointer in the IOA
6112 * config struct is not this adapter's we are doing nested
6113 * resets and fail_all_ops will take care of freeing the
6119 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6120 unsigned long timeout)
6122 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6123 ipr_cmd->done = ipr_reset_ioa_job;
6125 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6126 ipr_cmd->timer.expires = jiffies + timeout;
6127 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6128 add_timer(&ipr_cmd->timer);
6132 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6133 * @ioa_cfg: ioa cfg struct
6138 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6140 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6142 /* Initialize Host RRQ pointers */
6143 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6144 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6145 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6146 ioa_cfg->toggle_bit = 1;
6148 /* Zero out config table */
6149 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6153 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6154 * @ipr_cmd: ipr command struct
6156 * This function reinitializes some control blocks and
6157 * enables destructive diagnostics on the adapter.
6162 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6164 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6165 volatile u32 int_reg;
6168 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6169 ipr_init_ioa_mem(ioa_cfg);
6171 ioa_cfg->allow_interrupts = 1;
6172 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6174 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6175 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6176 ioa_cfg->regs.clr_interrupt_mask_reg);
6177 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6178 return IPR_RC_JOB_CONTINUE;
6181 /* Enable destructive diagnostics on IOA */
6182 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6184 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6185 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6187 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6189 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6190 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
6191 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6192 ipr_cmd->done = ipr_reset_ioa_job;
6193 add_timer(&ipr_cmd->timer);
6194 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6197 return IPR_RC_JOB_RETURN;
6201 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6202 * @ipr_cmd: ipr command struct
6204 * This function is invoked when an adapter dump has run out
6205 * of processing time.
6208 * IPR_RC_JOB_CONTINUE
6210 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6212 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6214 if (ioa_cfg->sdt_state == GET_DUMP)
6215 ioa_cfg->sdt_state = ABORT_DUMP;
6217 ipr_cmd->job_step = ipr_reset_alert;
6219 return IPR_RC_JOB_CONTINUE;
6223 * ipr_unit_check_no_data - Log a unit check/no data error log
6224 * @ioa_cfg: ioa config struct
6226 * Logs an error indicating the adapter unit checked, but for some
6227 * reason, we were unable to fetch the unit check buffer.
6232 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6234 ioa_cfg->errors_logged++;
6235 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6239 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6240 * @ioa_cfg: ioa config struct
6242 * Fetches the unit check buffer from the adapter by clocking the data
6243 * through the mailbox register.
6248 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6250 unsigned long mailbox;
6251 struct ipr_hostrcb *hostrcb;
6252 struct ipr_uc_sdt sdt;
6255 mailbox = readl(ioa_cfg->ioa_mailbox);
6257 if (!ipr_sdt_is_fmt2(mailbox)) {
6258 ipr_unit_check_no_data(ioa_cfg);
6262 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6263 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6264 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6266 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6267 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6268 ipr_unit_check_no_data(ioa_cfg);
6272 /* Find length of the first sdt entry (UC buffer) */
6273 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6274 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6276 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6277 struct ipr_hostrcb, queue);
6278 list_del(&hostrcb->queue);
6279 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6281 rc = ipr_get_ldump_data_section(ioa_cfg,
6282 be32_to_cpu(sdt.entry[0].bar_str_offset),
6283 (__be32 *)&hostrcb->hcam,
6284 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6287 ipr_handle_log_data(ioa_cfg, hostrcb);
6289 ipr_unit_check_no_data(ioa_cfg);
6291 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6295 * ipr_reset_restore_cfg_space - Restore PCI config space.
6296 * @ipr_cmd: ipr command struct
6298 * Description: This function restores the saved PCI config space of
6299 * the adapter, fails all outstanding ops back to the callers, and
6300 * fetches the dump/unit check if applicable to this reset.
6303 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6305 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6307 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6311 rc = pci_restore_state(ioa_cfg->pdev);
6313 if (rc != PCIBIOS_SUCCESSFUL) {
6314 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6315 return IPR_RC_JOB_CONTINUE;
6318 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6319 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6320 return IPR_RC_JOB_CONTINUE;
6323 ipr_fail_all_ops(ioa_cfg);
6325 if (ioa_cfg->ioa_unit_checked) {
6326 ioa_cfg->ioa_unit_checked = 0;
6327 ipr_get_unit_check_buffer(ioa_cfg);
6328 ipr_cmd->job_step = ipr_reset_alert;
6329 ipr_reset_start_timer(ipr_cmd, 0);
6330 return IPR_RC_JOB_RETURN;
6333 if (ioa_cfg->in_ioa_bringdown) {
6334 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6336 ipr_cmd->job_step = ipr_reset_enable_ioa;
6338 if (GET_DUMP == ioa_cfg->sdt_state) {
6339 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6340 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6341 schedule_work(&ioa_cfg->work_q);
6342 return IPR_RC_JOB_RETURN;
6347 return IPR_RC_JOB_CONTINUE;
6351 * ipr_reset_bist_done - BIST has completed on the adapter.
6352 * @ipr_cmd: ipr command struct
6354 * Description: Unblock config space and resume the reset process.
6357 * IPR_RC_JOB_CONTINUE
6359 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6362 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6363 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6365 return IPR_RC_JOB_CONTINUE;
6369 * ipr_reset_start_bist - Run BIST on the adapter.
6370 * @ipr_cmd: ipr command struct
6372 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6375 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6377 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6379 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6383 pci_block_user_cfg_access(ioa_cfg->pdev);
6384 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6386 if (rc != PCIBIOS_SUCCESSFUL) {
6387 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6388 rc = IPR_RC_JOB_CONTINUE;
6390 ipr_cmd->job_step = ipr_reset_bist_done;
6391 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6392 rc = IPR_RC_JOB_RETURN;
6400 * ipr_reset_allowed - Query whether or not IOA can be reset
6401 * @ioa_cfg: ioa config struct
6404 * 0 if reset not allowed / non-zero if reset is allowed
6406 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6408 volatile u32 temp_reg;
6410 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6411 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6415 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6416 * @ipr_cmd: ipr command struct
6418 * Description: This function waits for adapter permission to run BIST,
6419 * then runs BIST. If the adapter does not give permission after a
6420 * reasonable time, we will reset the adapter anyway. The impact of
6421 * resetting the adapter without warning the adapter is the risk of
6422 * losing the persistent error log on the adapter. If the adapter is
6423 * reset while it is writing to the flash on the adapter, the flash
6424 * segment will have bad ECC and be zeroed.
6427 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6429 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6431 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6432 int rc = IPR_RC_JOB_RETURN;
6434 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6435 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6436 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6438 ipr_cmd->job_step = ipr_reset_start_bist;
6439 rc = IPR_RC_JOB_CONTINUE;
6446 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6447 * @ipr_cmd: ipr command struct
6449 * Description: This function alerts the adapter that it will be reset.
6450 * If memory space is not currently enabled, proceed directly
6451 * to running BIST on the adapter. The timer must always be started
6452 * so we guarantee we do not run BIST from ipr_isr.
6457 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6464 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6466 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6467 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6468 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6469 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6471 ipr_cmd->job_step = ipr_reset_start_bist;
6474 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6475 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6478 return IPR_RC_JOB_RETURN;
6482 * ipr_reset_ucode_download_done - Microcode download completion
6483 * @ipr_cmd: ipr command struct
6485 * Description: This function unmaps the microcode download buffer.
6488 * IPR_RC_JOB_CONTINUE
6490 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6493 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6495 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6496 sglist->num_sg, DMA_TO_DEVICE);
6498 ipr_cmd->job_step = ipr_reset_alert;
6499 return IPR_RC_JOB_CONTINUE;
6503 * ipr_reset_ucode_download - Download microcode to the adapter
6504 * @ipr_cmd: ipr command struct
6506 * Description: This function checks to see if it there is microcode
6507 * to download to the adapter. If there is, a download is performed.
6510 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6512 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6515 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6518 ipr_cmd->job_step = ipr_reset_alert;
6521 return IPR_RC_JOB_CONTINUE;
6523 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6524 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6525 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6526 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6527 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6528 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6529 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6531 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6532 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6534 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6535 IPR_WRITE_BUFFER_TIMEOUT);
6538 return IPR_RC_JOB_RETURN;
6542 * ipr_reset_shutdown_ioa - Shutdown the adapter
6543 * @ipr_cmd: ipr command struct
6545 * Description: This function issues an adapter shutdown of the
6546 * specified type to the specified adapter as part of the
6547 * adapter reset job.
6550 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6552 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6555 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6556 unsigned long timeout;
6557 int rc = IPR_RC_JOB_CONTINUE;
6560 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6561 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6562 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6563 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6564 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6566 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6567 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6568 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6569 timeout = IPR_INTERNAL_TIMEOUT;
6571 timeout = IPR_SHUTDOWN_TIMEOUT;
6573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6575 rc = IPR_RC_JOB_RETURN;
6576 ipr_cmd->job_step = ipr_reset_ucode_download;
6578 ipr_cmd->job_step = ipr_reset_alert;
6585 * ipr_reset_ioa_job - Adapter reset job
6586 * @ipr_cmd: ipr command struct
6588 * Description: This function is the job router for the adapter reset job.
6593 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6599 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6601 if (ioa_cfg->reset_cmd != ipr_cmd) {
6603 * We are doing nested adapter resets and this is
6604 * not the current reset job.
6606 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6610 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6611 rc = ipr_cmd->job_step_failed(ipr_cmd);
6612 if (rc == IPR_RC_JOB_RETURN)
6616 ipr_reinit_ipr_cmnd(ipr_cmd);
6617 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6618 rc = ipr_cmd->job_step(ipr_cmd);
6619 } while(rc == IPR_RC_JOB_CONTINUE);
6623 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6624 * @ioa_cfg: ioa config struct
6625 * @job_step: first job step of reset job
6626 * @shutdown_type: shutdown type
6628 * Description: This function will initiate the reset of the given adapter
6629 * starting at the selected job step.
6630 * If the caller needs to wait on the completion of the reset,
6631 * the caller must sleep on the reset_wait_q.
6636 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6637 int (*job_step) (struct ipr_cmnd *),
6638 enum ipr_shutdown_type shutdown_type)
6640 struct ipr_cmnd *ipr_cmd;
6642 ioa_cfg->in_reset_reload = 1;
6643 ioa_cfg->allow_cmds = 0;
6644 scsi_block_requests(ioa_cfg->host);
6646 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6647 ioa_cfg->reset_cmd = ipr_cmd;
6648 ipr_cmd->job_step = job_step;
6649 ipr_cmd->u.shutdown_type = shutdown_type;
6651 ipr_reset_ioa_job(ipr_cmd);
6655 * ipr_initiate_ioa_reset - Initiate an adapter reset
6656 * @ioa_cfg: ioa config struct
6657 * @shutdown_type: shutdown type
6659 * Description: This function will initiate the reset of the given adapter.
6660 * If the caller needs to wait on the completion of the reset,
6661 * the caller must sleep on the reset_wait_q.
6666 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6667 enum ipr_shutdown_type shutdown_type)
6669 if (ioa_cfg->ioa_is_dead)
6672 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6673 ioa_cfg->sdt_state = ABORT_DUMP;
6675 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6676 dev_err(&ioa_cfg->pdev->dev,
6677 "IOA taken offline - error recovery failed\n");
6679 ioa_cfg->reset_retries = 0;
6680 ioa_cfg->ioa_is_dead = 1;
6682 if (ioa_cfg->in_ioa_bringdown) {
6683 ioa_cfg->reset_cmd = NULL;
6684 ioa_cfg->in_reset_reload = 0;
6685 ipr_fail_all_ops(ioa_cfg);
6686 wake_up_all(&ioa_cfg->reset_wait_q);
6688 spin_unlock_irq(ioa_cfg->host->host_lock);
6689 scsi_unblock_requests(ioa_cfg->host);
6690 spin_lock_irq(ioa_cfg->host->host_lock);
6693 ioa_cfg->in_ioa_bringdown = 1;
6694 shutdown_type = IPR_SHUTDOWN_NONE;
6698 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6703 * ipr_reset_freeze - Hold off all I/O activity
6704 * @ipr_cmd: ipr command struct
6706 * Description: If the PCI slot is frozen, hold off all I/O
6707 * activity; then, as soon as the slot is available again,
6708 * initiate an adapter reset.
6710 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6712 /* Disallow new interrupts, avoid loop */
6713 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6714 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6715 ipr_cmd->done = ipr_reset_ioa_job;
6716 return IPR_RC_JOB_RETURN;
6720 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6721 * @pdev: PCI device struct
6723 * Description: This routine is called to tell us that the PCI bus
6724 * is down. Can't do anything here, except put the device driver
6725 * into a holding pattern, waiting for the PCI bus to come back.
6727 static void ipr_pci_frozen(struct pci_dev *pdev)
6729 unsigned long flags = 0;
6730 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6732 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6733 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6734 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6738 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6739 * @pdev: PCI device struct
6741 * Description: This routine is called by the pci error recovery
6742 * code after the PCI slot has been reset, just before we
6743 * should resume normal operations.
6745 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6747 unsigned long flags = 0;
6748 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6750 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6751 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6754 return PCI_ERS_RESULT_RECOVERED;
6758 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6759 * @pdev: PCI device struct
6761 * Description: This routine is called when the PCI bus has
6762 * permanently failed.
6764 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6766 unsigned long flags = 0;
6767 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6769 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6770 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6771 ioa_cfg->sdt_state = ABORT_DUMP;
6772 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6773 ioa_cfg->in_ioa_bringdown = 1;
6774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6779 * ipr_pci_error_detected - Called when a PCI error is detected.
6780 * @pdev: PCI device struct
6781 * @state: PCI channel state
6783 * Description: Called when a PCI error is detected.
6786 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6788 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6789 pci_channel_state_t state)
6792 case pci_channel_io_frozen:
6793 ipr_pci_frozen(pdev);
6794 return PCI_ERS_RESULT_NEED_RESET;
6795 case pci_channel_io_perm_failure:
6796 ipr_pci_perm_failure(pdev);
6797 return PCI_ERS_RESULT_DISCONNECT;
6802 return PCI_ERS_RESULT_NEED_RESET;
6806 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6807 * @ioa_cfg: ioa cfg struct
6809 * Description: This is the second phase of adapter intialization
6810 * This function takes care of initilizing the adapter to the point
6811 * where it can accept new commands.
6814 * 0 on sucess / -EIO on failure
6816 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6819 unsigned long host_lock_flags = 0;
6822 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6823 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
6824 if (ioa_cfg->needs_hard_reset) {
6825 ioa_cfg->needs_hard_reset = 0;
6826 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6828 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6832 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6833 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6835 if (ioa_cfg->ioa_is_dead) {
6837 } else if (ipr_invalid_adapter(ioa_cfg)) {
6841 dev_err(&ioa_cfg->pdev->dev,
6842 "Adapter not supported in this hardware configuration.\n");
6845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6852 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6853 * @ioa_cfg: ioa config struct
6858 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6862 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6863 if (ioa_cfg->ipr_cmnd_list[i])
6864 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6865 ioa_cfg->ipr_cmnd_list[i],
6866 ioa_cfg->ipr_cmnd_list_dma[i]);
6868 ioa_cfg->ipr_cmnd_list[i] = NULL;
6871 if (ioa_cfg->ipr_cmd_pool)
6872 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6874 ioa_cfg->ipr_cmd_pool = NULL;
6878 * ipr_free_mem - Frees memory allocated for an adapter
6879 * @ioa_cfg: ioa cfg struct
6884 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6888 kfree(ioa_cfg->res_entries);
6889 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6890 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6891 ipr_free_cmd_blks(ioa_cfg);
6892 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6893 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6894 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6896 ioa_cfg->cfg_table_dma);
6898 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6899 pci_free_consistent(ioa_cfg->pdev,
6900 sizeof(struct ipr_hostrcb),
6901 ioa_cfg->hostrcb[i],
6902 ioa_cfg->hostrcb_dma[i]);
6905 ipr_free_dump(ioa_cfg);
6906 kfree(ioa_cfg->trace);
6910 * ipr_free_all_resources - Free all allocated resources for an adapter.
6911 * @ipr_cmd: ipr command struct
6913 * This function frees all allocated resources for the
6914 * specified adapter.
6919 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6921 struct pci_dev *pdev = ioa_cfg->pdev;
6924 free_irq(pdev->irq, ioa_cfg);
6925 iounmap(ioa_cfg->hdw_dma_regs);
6926 pci_release_regions(pdev);
6927 ipr_free_mem(ioa_cfg);
6928 scsi_host_put(ioa_cfg->host);
6929 pci_disable_device(pdev);
6934 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6935 * @ioa_cfg: ioa config struct
6938 * 0 on success / -ENOMEM on allocation failure
6940 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6942 struct ipr_cmnd *ipr_cmd;
6943 struct ipr_ioarcb *ioarcb;
6944 dma_addr_t dma_addr;
6947 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6948 sizeof(struct ipr_cmnd), 8, 0);
6950 if (!ioa_cfg->ipr_cmd_pool)
6953 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6954 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
6957 ipr_free_cmd_blks(ioa_cfg);
6961 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6962 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6963 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6965 ioarcb = &ipr_cmd->ioarcb;
6966 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6967 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6968 ioarcb->write_ioadl_addr =
6969 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6970 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6971 ioarcb->ioasa_host_pci_addr =
6972 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6973 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6974 ipr_cmd->cmd_index = i;
6975 ipr_cmd->ioa_cfg = ioa_cfg;
6976 ipr_cmd->sense_buffer_dma = dma_addr +
6977 offsetof(struct ipr_cmnd, sense_buffer);
6979 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6986 * ipr_alloc_mem - Allocate memory for an adapter
6987 * @ioa_cfg: ioa config struct
6990 * 0 on success / non-zero for error
6992 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6994 struct pci_dev *pdev = ioa_cfg->pdev;
6995 int i, rc = -ENOMEM;
6998 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
6999 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7001 if (!ioa_cfg->res_entries)
7004 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7005 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7007 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7008 sizeof(struct ipr_misc_cbs),
7009 &ioa_cfg->vpd_cbs_dma);
7011 if (!ioa_cfg->vpd_cbs)
7012 goto out_free_res_entries;
7014 if (ipr_alloc_cmd_blks(ioa_cfg))
7015 goto out_free_vpd_cbs;
7017 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7018 sizeof(u32) * IPR_NUM_CMD_BLKS,
7019 &ioa_cfg->host_rrq_dma);
7021 if (!ioa_cfg->host_rrq)
7022 goto out_ipr_free_cmd_blocks;
7024 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7025 sizeof(struct ipr_config_table),
7026 &ioa_cfg->cfg_table_dma);
7028 if (!ioa_cfg->cfg_table)
7029 goto out_free_host_rrq;
7031 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7032 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7033 sizeof(struct ipr_hostrcb),
7034 &ioa_cfg->hostrcb_dma[i]);
7036 if (!ioa_cfg->hostrcb[i])
7037 goto out_free_hostrcb_dma;
7039 ioa_cfg->hostrcb[i]->hostrcb_dma =
7040 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7041 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7042 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7045 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7046 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7048 if (!ioa_cfg->trace)
7049 goto out_free_hostrcb_dma;
7056 out_free_hostrcb_dma:
7058 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7059 ioa_cfg->hostrcb[i],
7060 ioa_cfg->hostrcb_dma[i]);
7062 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7063 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7065 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7066 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7067 out_ipr_free_cmd_blocks:
7068 ipr_free_cmd_blks(ioa_cfg);
7070 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7071 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7072 out_free_res_entries:
7073 kfree(ioa_cfg->res_entries);
7078 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7079 * @ioa_cfg: ioa config struct
7084 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7088 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7089 ioa_cfg->bus_attr[i].bus = i;
7090 ioa_cfg->bus_attr[i].qas_enabled = 0;
7091 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7092 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7093 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7095 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7100 * ipr_init_ioa_cfg - Initialize IOA config struct
7101 * @ioa_cfg: ioa config struct
7102 * @host: scsi host struct
7103 * @pdev: PCI dev struct
7108 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7109 struct Scsi_Host *host, struct pci_dev *pdev)
7111 const struct ipr_interrupt_offsets *p;
7112 struct ipr_interrupts *t;
7115 ioa_cfg->host = host;
7116 ioa_cfg->pdev = pdev;
7117 ioa_cfg->log_level = ipr_log_level;
7118 ioa_cfg->doorbell = IPR_DOORBELL;
7119 if (!ipr_auto_create)
7120 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7121 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7122 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7123 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7124 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7125 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7126 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7127 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7128 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7130 INIT_LIST_HEAD(&ioa_cfg->free_q);
7131 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7132 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7133 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7134 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7135 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7136 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7137 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7138 ioa_cfg->sdt_state = INACTIVE;
7139 if (ipr_enable_cache)
7140 ioa_cfg->cache_state = CACHE_ENABLED;
7142 ioa_cfg->cache_state = CACHE_DISABLED;
7144 ipr_initialize_bus_attr(ioa_cfg);
7146 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7147 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7148 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7149 host->unique_id = host->host_no;
7150 host->max_cmd_len = IPR_MAX_CDB_LEN;
7151 pci_set_drvdata(pdev, ioa_cfg);
7153 p = &ioa_cfg->chip_cfg->regs;
7155 base = ioa_cfg->hdw_dma_regs;
7157 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7158 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7159 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7160 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7161 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7162 t->ioarrin_reg = base + p->ioarrin_reg;
7163 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7164 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7165 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7169 * ipr_get_chip_cfg - Find adapter chip configuration
7170 * @dev_id: PCI device id struct
7173 * ptr to chip config on success / NULL on failure
7175 static const struct ipr_chip_cfg_t * __devinit
7176 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7180 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7181 if (ipr_chip[i].vendor == dev_id->vendor &&
7182 ipr_chip[i].device == dev_id->device)
7183 return ipr_chip[i].cfg;
7188 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7189 * @pdev: PCI device struct
7190 * @dev_id: PCI device id struct
7193 * 0 on success / non-zero on failure
7195 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7196 const struct pci_device_id *dev_id)
7198 struct ipr_ioa_cfg *ioa_cfg;
7199 struct Scsi_Host *host;
7200 unsigned long ipr_regs_pci;
7201 void __iomem *ipr_regs;
7202 int rc = PCIBIOS_SUCCESSFUL;
7203 volatile u32 mask, uproc;
7207 if ((rc = pci_enable_device(pdev))) {
7208 dev_err(&pdev->dev, "Cannot enable adapter\n");
7212 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7214 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7217 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7222 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7223 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7224 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7225 sata_port_info.flags, &ipr_sata_ops);
7227 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7229 if (!ioa_cfg->chip_cfg) {
7230 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7231 dev_id->vendor, dev_id->device);
7232 goto out_scsi_host_put;
7235 ipr_regs_pci = pci_resource_start(pdev, 0);
7237 rc = pci_request_regions(pdev, IPR_NAME);
7240 "Couldn't register memory range of registers\n");
7241 goto out_scsi_host_put;
7244 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7248 "Couldn't map memory range of registers\n");
7250 goto out_release_regions;
7253 ioa_cfg->hdw_dma_regs = ipr_regs;
7254 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7255 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7257 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7259 pci_set_master(pdev);
7261 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7263 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7267 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7268 ioa_cfg->chip_cfg->cache_line_size);
7270 if (rc != PCIBIOS_SUCCESSFUL) {
7271 dev_err(&pdev->dev, "Write of cache line size failed\n");
7276 /* Save away PCI config space for use following IOA reset */
7277 rc = pci_save_state(pdev);
7279 if (rc != PCIBIOS_SUCCESSFUL) {
7280 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7285 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7288 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7291 rc = ipr_alloc_mem(ioa_cfg);
7294 "Couldn't allocate enough memory for device driver!\n");
7299 * If HRRQ updated interrupt is not masked, or reset alert is set,
7300 * the card is in an unknown state and needs a hard reset
7302 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7303 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7304 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7305 ioa_cfg->needs_hard_reset = 1;
7307 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7308 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7311 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7316 spin_lock(&ipr_driver_lock);
7317 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7318 spin_unlock(&ipr_driver_lock);
7325 ipr_free_mem(ioa_cfg);
7328 out_release_regions:
7329 pci_release_regions(pdev);
7331 scsi_host_put(host);
7333 pci_disable_device(pdev);
7338 * ipr_scan_vsets - Scans for VSET devices
7339 * @ioa_cfg: ioa config struct
7341 * Description: Since the VSET resources do not follow SAM in that we can have
7342 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7347 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7351 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7352 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7353 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7357 * ipr_initiate_ioa_bringdown - Bring down an adapter
7358 * @ioa_cfg: ioa config struct
7359 * @shutdown_type: shutdown type
7361 * Description: This function will initiate bringing down the adapter.
7362 * This consists of issuing an IOA shutdown to the adapter
7363 * to flush the cache, and running BIST.
7364 * If the caller needs to wait on the completion of the reset,
7365 * the caller must sleep on the reset_wait_q.
7370 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7371 enum ipr_shutdown_type shutdown_type)
7374 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7375 ioa_cfg->sdt_state = ABORT_DUMP;
7376 ioa_cfg->reset_retries = 0;
7377 ioa_cfg->in_ioa_bringdown = 1;
7378 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7383 * __ipr_remove - Remove a single adapter
7384 * @pdev: pci device struct
7386 * Adapter hot plug remove entry point.
7391 static void __ipr_remove(struct pci_dev *pdev)
7393 unsigned long host_lock_flags = 0;
7394 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7397 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7398 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7401 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7402 flush_scheduled_work();
7403 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7405 spin_lock(&ipr_driver_lock);
7406 list_del(&ioa_cfg->queue);
7407 spin_unlock(&ipr_driver_lock);
7409 if (ioa_cfg->sdt_state == ABORT_DUMP)
7410 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7413 ipr_free_all_resources(ioa_cfg);
7419 * ipr_remove - IOA hot plug remove entry point
7420 * @pdev: pci device struct
7422 * Adapter hot plug remove entry point.
7427 static void ipr_remove(struct pci_dev *pdev)
7429 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7433 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7435 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7437 scsi_remove_host(ioa_cfg->host);
7445 * ipr_probe - Adapter hot plug add entry point
7448 * 0 on success / non-zero on failure
7450 static int __devinit ipr_probe(struct pci_dev *pdev,
7451 const struct pci_device_id *dev_id)
7453 struct ipr_ioa_cfg *ioa_cfg;
7456 rc = ipr_probe_ioa(pdev, dev_id);
7461 ioa_cfg = pci_get_drvdata(pdev);
7462 rc = ipr_probe_ioa_part2(ioa_cfg);
7469 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7476 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7480 scsi_remove_host(ioa_cfg->host);
7485 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7489 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7491 scsi_remove_host(ioa_cfg->host);
7496 scsi_scan_host(ioa_cfg->host);
7497 ipr_scan_vsets(ioa_cfg);
7498 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7499 ioa_cfg->allow_ml_add_del = 1;
7500 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7501 schedule_work(&ioa_cfg->work_q);
7506 * ipr_shutdown - Shutdown handler.
7507 * @pdev: pci device struct
7509 * This function is invoked upon system shutdown/reboot. It will issue
7510 * an adapter shutdown to the adapter to flush the write cache.
7515 static void ipr_shutdown(struct pci_dev *pdev)
7517 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7518 unsigned long lock_flags = 0;
7520 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7521 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7522 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7523 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7526 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7527 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7528 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7529 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7530 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7531 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7532 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7533 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7535 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7536 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7537 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7538 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7539 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7540 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7541 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 0 },
7543 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7544 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7545 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7547 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 },
7549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7553 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 },
7555 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B8, 0, 0, 0 },
7557 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 0 },
7559 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7560 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7561 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7563 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 0 },
7565 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 0 },
7569 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7571 static struct pci_error_handlers ipr_err_handler = {
7572 .error_detected = ipr_pci_error_detected,
7573 .slot_reset = ipr_pci_slot_reset,
7576 static struct pci_driver ipr_driver = {
7578 .id_table = ipr_pci_table,
7580 .remove = ipr_remove,
7581 .shutdown = ipr_shutdown,
7582 .err_handler = &ipr_err_handler,
7586 * ipr_init - Module entry point
7589 * 0 on success / negative value on failure
7591 static int __init ipr_init(void)
7593 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7594 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7596 return pci_register_driver(&ipr_driver);
7600 * ipr_exit - Module unload
7602 * Module unload entry point.
7607 static void __exit ipr_exit(void)
7609 pci_unregister_driver(&ipr_driver);
7612 module_init(ipr_init);
7613 module_exit(ipr_exit);