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 = 0;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static DEFINE_SPINLOCK(ipr_driver_lock);
97 /* This table describes the differences between DMA controller chips */
98 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .cache_line_size = 0x20,
103 .set_interrupt_mask_reg = 0x0022C,
104 .clr_interrupt_mask_reg = 0x00230,
105 .sense_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_reg = 0x00228,
107 .sense_interrupt_reg = 0x00224,
108 .ioarrin_reg = 0x00404,
109 .sense_uproc_interrupt_reg = 0x00214,
110 .set_uproc_interrupt_reg = 0x00214,
111 .clr_uproc_interrupt_reg = 0x00218
114 { /* Snipe and Scamp */
116 .cache_line_size = 0x20,
118 .set_interrupt_mask_reg = 0x00288,
119 .clr_interrupt_mask_reg = 0x0028C,
120 .sense_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_reg = 0x00284,
122 .sense_interrupt_reg = 0x00280,
123 .ioarrin_reg = 0x00504,
124 .sense_uproc_interrupt_reg = 0x00290,
125 .set_uproc_interrupt_reg = 0x00290,
126 .clr_uproc_interrupt_reg = 0x00294
131 static const struct ipr_chip_t ipr_chip[] = {
132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
141 static int ipr_max_bus_speeds [] = {
142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
146 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
147 module_param_named(max_speed, ipr_max_speed, uint, 0);
148 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
149 module_param_named(log_level, ipr_log_level, uint, 0);
150 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
151 module_param_named(testmode, ipr_testmode, int, 0);
152 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
153 module_param_named(fastfail, ipr_fastfail, int, 0);
154 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
155 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
156 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
157 module_param_named(enable_cache, ipr_enable_cache, int, 0);
158 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
159 module_param_named(debug, ipr_debug, int, 0);
160 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
161 MODULE_LICENSE("GPL");
162 MODULE_VERSION(IPR_DRIVER_VERSION);
164 /* A constant array of IOASCs/URCs/Error Messages */
166 struct ipr_error_table_t ipr_error_table[] = {
168 "8155: An unknown error was received"},
170 "Soft underlength error"},
172 "Command to be cancelled not found"},
174 "Qualified success"},
176 "FFFE: Soft device bus error recovered by the IOA"},
178 "4101: Soft device bus fabric error"},
180 "FFF9: Device sector reassign successful"},
182 "FFF7: Media error recovered by device rewrite procedures"},
184 "7001: IOA sector reassignment successful"},
186 "FFF9: Soft media error. Sector reassignment recommended"},
188 "FFF7: Media error recovered by IOA rewrite procedures"},
190 "FF3D: Soft PCI bus error recovered by the IOA"},
192 "FFF6: Device hardware error recovered by the IOA"},
194 "FFF6: Device hardware error recovered by the device"},
196 "FF3D: Soft IOA error recovered by the IOA"},
198 "FFFA: Undefined device response recovered by the IOA"},
200 "FFF6: Device bus error, message or command phase"},
202 "FFFE: Task Management Function failed"},
204 "FFF6: Failure prediction threshold exceeded"},
206 "8009: Impending cache battery pack failure"},
208 "34FF: Disk device format in progress"},
210 "Synchronization required"},
212 "No ready, IOA shutdown"},
214 "Not ready, IOA has been shutdown"},
216 "3020: Storage subsystem configuration error"},
218 "FFF5: Medium error, data unreadable, recommend reassign"},
220 "7000: Medium error, data unreadable, do not reassign"},
222 "FFF3: Disk media format bad"},
224 "3002: Addressed device failed to respond to selection"},
226 "3100: Device bus error"},
228 "3109: IOA timed out a device command"},
230 "3120: SCSI bus is not operational"},
232 "4100: Hard device bus fabric error"},
234 "9000: IOA reserved area data check"},
236 "9001: IOA reserved area invalid data pattern"},
238 "9002: IOA reserved area LRC error"},
240 "102E: Out of alternate sectors for disk storage"},
242 "FFF4: Data transfer underlength error"},
244 "FFF4: Data transfer overlength error"},
246 "3400: Logical unit failure"},
248 "FFF4: Device microcode is corrupt"},
250 "8150: PCI bus error"},
252 "Unsupported device bus message received"},
254 "FFF4: Disk device problem"},
256 "8150: Permanent IOA failure"},
258 "3010: Disk device returned wrong response to IOA"},
260 "8151: IOA microcode error"},
262 "Device bus status error"},
264 "8157: IOA error requiring IOA reset to recover"},
266 "ATA device status error"},
268 "Message reject received from the device"},
270 "8008: A permanent cache battery pack failure occurred"},
272 "9090: Disk unit has been modified after the last known status"},
274 "9081: IOA detected device error"},
276 "9082: IOA detected device error"},
278 "3110: Device bus error, message or command phase"},
280 "3110: SAS Command / Task Management Function failed"},
282 "9091: Incorrect hardware configuration change has been detected"},
284 "9073: Invalid multi-adapter configuration"},
286 "4010: Incorrect connection between cascaded expanders"},
288 "4020: Connections exceed IOA design limits"},
290 "4030: Incorrect multipath connection"},
292 "4110: Unsupported enclosure function"},
294 "FFF4: Command to logical unit failed"},
296 "Illegal request, invalid request type or request packet"},
298 "Illegal request, invalid resource handle"},
300 "Illegal request, commands not allowed to this device"},
302 "Illegal request, command not allowed to a secondary adapter"},
304 "Illegal request, invalid field in parameter list"},
306 "Illegal request, parameter not supported"},
308 "Illegal request, parameter value invalid"},
310 "Illegal request, command sequence error"},
312 "Illegal request, dual adapter support not enabled"},
314 "9031: Array protection temporarily suspended, protection resuming"},
316 "9040: Array protection temporarily suspended, protection resuming"},
318 "3140: Device bus not ready to ready transition"},
320 "FFFB: SCSI bus was reset"},
322 "FFFE: SCSI bus transition to single ended"},
324 "FFFE: SCSI bus transition to LVD"},
326 "FFFB: SCSI bus was reset by another initiator"},
328 "3029: A device replacement has occurred"},
330 "9051: IOA cache data exists for a missing or failed device"},
332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
334 "9025: Disk unit is not supported at its physical location"},
336 "3020: IOA detected a SCSI bus configuration error"},
338 "3150: SCSI bus configuration error"},
340 "9074: Asymmetric advanced function disk configuration"},
342 "4040: Incomplete multipath connection between IOA and enclosure"},
344 "4041: Incomplete multipath connection between enclosure and device"},
346 "9075: Incomplete multipath connection between IOA and remote IOA"},
348 "9076: Configuration error, missing remote IOA"},
350 "4050: Enclosure does not support a required multipath function"},
352 "9041: Array protection temporarily suspended"},
354 "9042: Corrupt array parity detected on specified device"},
356 "9030: Array no longer protected due to missing or failed disk unit"},
358 "9071: Link operational transition"},
360 "9072: Link not operational transition"},
362 "9032: Array exposed but still protected"},
364 "4061: Multipath redundancy level got better"},
366 "4060: Multipath redundancy level got worse"},
368 "Failure due to other device"},
370 "9008: IOA does not support functions expected by devices"},
372 "9010: Cache data associated with attached devices cannot be found"},
374 "9011: Cache data belongs to devices other than those attached"},
376 "9020: Array missing 2 or more devices with only 1 device present"},
378 "9021: Array missing 2 or more devices with 2 or more devices present"},
380 "9022: Exposed array is missing a required device"},
382 "9023: Array member(s) not at required physical locations"},
384 "9024: Array not functional due to present hardware configuration"},
386 "9026: Array not functional due to present hardware configuration"},
388 "9027: Array is missing a device and parity is out of sync"},
390 "9028: Maximum number of arrays already exist"},
392 "9050: Required cache data cannot be located for a disk unit"},
394 "9052: Cache data exists for a device that has been modified"},
396 "9054: IOA resources not available due to previous problems"},
398 "9092: Disk unit requires initialization before use"},
400 "9029: Incorrect hardware configuration change has been detected"},
402 "9060: One or more disk pairs are missing from an array"},
404 "9061: One or more disks are missing from an array"},
406 "9062: One or more disks are missing from an array"},
408 "9063: Maximum number of functional arrays has been exceeded"},
410 "Aborted command, invalid descriptor"},
412 "Command terminated by host"}
415 static const struct ipr_ses_table_entry ipr_ses_table[] = {
416 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
417 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
418 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
419 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
420 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
421 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
422 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
423 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
424 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
425 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
426 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
427 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
432 * Function Prototypes
434 static int ipr_reset_alert(struct ipr_cmnd *);
435 static void ipr_process_ccn(struct ipr_cmnd *);
436 static void ipr_process_error(struct ipr_cmnd *);
437 static void ipr_reset_ioa_job(struct ipr_cmnd *);
438 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
439 enum ipr_shutdown_type);
441 #ifdef CONFIG_SCSI_IPR_TRACE
443 * ipr_trc_hook - Add a trace entry to the driver trace
444 * @ipr_cmd: ipr command struct
446 * @add_data: additional data
451 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
452 u8 type, u32 add_data)
454 struct ipr_trace_entry *trace_entry;
455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
457 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
458 trace_entry->time = jiffies;
459 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
460 trace_entry->type = type;
461 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
462 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
463 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
464 trace_entry->u.add_data = add_data;
467 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
471 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
472 * @ipr_cmd: ipr command struct
477 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
479 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
480 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
482 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
483 ioarcb->write_data_transfer_length = 0;
484 ioarcb->read_data_transfer_length = 0;
485 ioarcb->write_ioadl_len = 0;
486 ioarcb->read_ioadl_len = 0;
488 ioasa->residual_data_len = 0;
489 ioasa->u.gata.status = 0;
491 ipr_cmd->scsi_cmd = NULL;
493 ipr_cmd->sense_buffer[0] = 0;
494 ipr_cmd->dma_use_sg = 0;
498 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
499 * @ipr_cmd: ipr command struct
504 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
506 ipr_reinit_ipr_cmnd(ipr_cmd);
507 ipr_cmd->u.scratch = 0;
508 ipr_cmd->sibling = NULL;
509 init_timer(&ipr_cmd->timer);
513 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
514 * @ioa_cfg: ioa config struct
517 * pointer to ipr command struct
520 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
522 struct ipr_cmnd *ipr_cmd;
524 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
525 list_del(&ipr_cmd->queue);
526 ipr_init_ipr_cmnd(ipr_cmd);
532 * ipr_unmap_sglist - Unmap scatterlist if mapped
533 * @ioa_cfg: ioa config struct
534 * @ipr_cmd: ipr command struct
539 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
540 struct ipr_cmnd *ipr_cmd)
542 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
544 if (ipr_cmd->dma_use_sg) {
545 if (scsi_cmd->use_sg > 0) {
546 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
548 scsi_cmd->sc_data_direction);
550 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
551 scsi_cmd->request_bufflen,
552 scsi_cmd->sc_data_direction);
558 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
559 * @ioa_cfg: ioa config struct
560 * @clr_ints: interrupts to clear
562 * This function masks all interrupts on the adapter, then clears the
563 * interrupts specified in the mask
568 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
571 volatile u32 int_reg;
573 /* Stop new interrupts */
574 ioa_cfg->allow_interrupts = 0;
576 /* Set interrupt mask to stop all new interrupts */
577 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
579 /* Clear any pending interrupts */
580 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
581 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
585 * ipr_save_pcix_cmd_reg - Save PCI-X command register
586 * @ioa_cfg: ioa config struct
589 * 0 on success / -EIO on failure
591 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
593 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
595 if (pcix_cmd_reg == 0)
598 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
599 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
600 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
604 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
609 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
610 * @ioa_cfg: ioa config struct
613 * 0 on success / -EIO on failure
615 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
617 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
620 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
621 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
622 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
631 * ipr_sata_eh_done - done function for aborted SATA commands
632 * @ipr_cmd: ipr command struct
634 * This function is invoked for ops generated to SATA
635 * devices which are being aborted.
640 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
642 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
643 struct ata_queued_cmd *qc = ipr_cmd->qc;
644 struct ipr_sata_port *sata_port = qc->ap->private_data;
646 qc->err_mask |= AC_ERR_OTHER;
647 sata_port->ioasa.status |= ATA_BUSY;
648 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
653 * ipr_scsi_eh_done - mid-layer done function for aborted ops
654 * @ipr_cmd: ipr command struct
656 * This function is invoked by the interrupt handler for
657 * ops generated by the SCSI mid-layer which are being aborted.
662 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
664 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
665 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
667 scsi_cmd->result |= (DID_ERROR << 16);
669 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
670 scsi_cmd->scsi_done(scsi_cmd);
671 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
675 * ipr_fail_all_ops - Fails all outstanding ops.
676 * @ioa_cfg: ioa config struct
678 * This function fails all outstanding ops.
683 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
685 struct ipr_cmnd *ipr_cmd, *temp;
688 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
689 list_del(&ipr_cmd->queue);
691 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
692 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
694 if (ipr_cmd->scsi_cmd)
695 ipr_cmd->done = ipr_scsi_eh_done;
696 else if (ipr_cmd->qc)
697 ipr_cmd->done = ipr_sata_eh_done;
699 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
700 del_timer(&ipr_cmd->timer);
701 ipr_cmd->done(ipr_cmd);
708 * ipr_do_req - Send driver initiated requests.
709 * @ipr_cmd: ipr command struct
710 * @done: done function
711 * @timeout_func: timeout function
712 * @timeout: timeout value
714 * This function sends the specified command to the adapter with the
715 * timeout given. The done function is invoked on command completion.
720 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
721 void (*done) (struct ipr_cmnd *),
722 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
728 ipr_cmd->done = done;
730 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
731 ipr_cmd->timer.expires = jiffies + timeout;
732 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
734 add_timer(&ipr_cmd->timer);
736 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
739 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
740 ioa_cfg->regs.ioarrin_reg);
744 * ipr_internal_cmd_done - Op done function for an internally generated op.
745 * @ipr_cmd: ipr command struct
747 * This function is the op done function for an internally generated,
748 * blocking op. It simply wakes the sleeping thread.
753 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
755 if (ipr_cmd->sibling)
756 ipr_cmd->sibling = NULL;
758 complete(&ipr_cmd->completion);
762 * ipr_send_blocking_cmd - Send command and sleep on its completion.
763 * @ipr_cmd: ipr command struct
764 * @timeout_func: function to invoke if command times out
770 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
771 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
776 init_completion(&ipr_cmd->completion);
777 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
779 spin_unlock_irq(ioa_cfg->host->host_lock);
780 wait_for_completion(&ipr_cmd->completion);
781 spin_lock_irq(ioa_cfg->host->host_lock);
785 * ipr_send_hcam - Send an HCAM to the adapter.
786 * @ioa_cfg: ioa config struct
788 * @hostrcb: hostrcb struct
790 * This function will send a Host Controlled Async command to the adapter.
791 * If HCAMs are currently not allowed to be issued to the adapter, it will
792 * place the hostrcb on the free queue.
797 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
798 struct ipr_hostrcb *hostrcb)
800 struct ipr_cmnd *ipr_cmd;
801 struct ipr_ioarcb *ioarcb;
803 if (ioa_cfg->allow_cmds) {
804 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
805 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
806 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
808 ipr_cmd->u.hostrcb = hostrcb;
809 ioarcb = &ipr_cmd->ioarcb;
811 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
812 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
813 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
814 ioarcb->cmd_pkt.cdb[1] = type;
815 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
816 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
818 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
819 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
820 ipr_cmd->ioadl[0].flags_and_data_len =
821 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
822 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
824 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
825 ipr_cmd->done = ipr_process_ccn;
827 ipr_cmd->done = ipr_process_error;
829 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
832 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
833 ioa_cfg->regs.ioarrin_reg);
835 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
840 * ipr_init_res_entry - Initialize a resource entry struct.
841 * @res: resource entry struct
846 static void ipr_init_res_entry(struct ipr_resource_entry *res)
848 res->needs_sync_complete = 0;
851 res->del_from_ml = 0;
852 res->resetting_device = 0;
854 res->sata_port = NULL;
858 * ipr_handle_config_change - Handle a config change from the adapter
859 * @ioa_cfg: ioa config struct
865 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
866 struct ipr_hostrcb *hostrcb)
868 struct ipr_resource_entry *res = NULL;
869 struct ipr_config_table_entry *cfgte;
872 cfgte = &hostrcb->hcam.u.ccn.cfgte;
874 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
875 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
876 sizeof(cfgte->res_addr))) {
883 if (list_empty(&ioa_cfg->free_res_q)) {
884 ipr_send_hcam(ioa_cfg,
885 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
890 res = list_entry(ioa_cfg->free_res_q.next,
891 struct ipr_resource_entry, queue);
893 list_del(&res->queue);
894 ipr_init_res_entry(res);
895 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
898 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
900 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
902 res->del_from_ml = 1;
903 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
904 if (ioa_cfg->allow_ml_add_del)
905 schedule_work(&ioa_cfg->work_q);
907 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
908 } else if (!res->sdev) {
910 if (ioa_cfg->allow_ml_add_del)
911 schedule_work(&ioa_cfg->work_q);
914 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
918 * ipr_process_ccn - Op done function for a CCN.
919 * @ipr_cmd: ipr command struct
921 * This function is the op done function for a configuration
922 * change notification host controlled async from the adapter.
927 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
929 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
930 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
931 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
933 list_del(&hostrcb->queue);
934 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
937 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
938 dev_err(&ioa_cfg->pdev->dev,
939 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
941 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
943 ipr_handle_config_change(ioa_cfg, hostrcb);
948 * ipr_log_vpd - Log the passed VPD to the error log.
949 * @vpd: vendor/product id/sn struct
954 static void ipr_log_vpd(struct ipr_vpd *vpd)
956 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
957 + IPR_SERIAL_NUM_LEN];
959 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
960 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
962 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
963 ipr_err("Vendor/Product ID: %s\n", buffer);
965 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
966 buffer[IPR_SERIAL_NUM_LEN] = '\0';
967 ipr_err(" Serial Number: %s\n", buffer);
971 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
972 * @vpd: vendor/product id/sn/wwn struct
977 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
979 ipr_log_vpd(&vpd->vpd);
980 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
981 be32_to_cpu(vpd->wwid[1]));
985 * ipr_log_enhanced_cache_error - Log a cache error.
986 * @ioa_cfg: ioa config struct
987 * @hostrcb: hostrcb struct
992 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
993 struct ipr_hostrcb *hostrcb)
995 struct ipr_hostrcb_type_12_error *error =
996 &hostrcb->hcam.u.error.u.type_12_error;
998 ipr_err("-----Current Configuration-----\n");
999 ipr_err("Cache Directory Card Information:\n");
1000 ipr_log_ext_vpd(&error->ioa_vpd);
1001 ipr_err("Adapter Card Information:\n");
1002 ipr_log_ext_vpd(&error->cfc_vpd);
1004 ipr_err("-----Expected Configuration-----\n");
1005 ipr_err("Cache Directory Card Information:\n");
1006 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1007 ipr_err("Adapter Card Information:\n");
1008 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1010 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1011 be32_to_cpu(error->ioa_data[0]),
1012 be32_to_cpu(error->ioa_data[1]),
1013 be32_to_cpu(error->ioa_data[2]));
1017 * ipr_log_cache_error - Log a cache error.
1018 * @ioa_cfg: ioa config struct
1019 * @hostrcb: hostrcb struct
1024 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1025 struct ipr_hostrcb *hostrcb)
1027 struct ipr_hostrcb_type_02_error *error =
1028 &hostrcb->hcam.u.error.u.type_02_error;
1030 ipr_err("-----Current Configuration-----\n");
1031 ipr_err("Cache Directory Card Information:\n");
1032 ipr_log_vpd(&error->ioa_vpd);
1033 ipr_err("Adapter Card Information:\n");
1034 ipr_log_vpd(&error->cfc_vpd);
1036 ipr_err("-----Expected Configuration-----\n");
1037 ipr_err("Cache Directory Card Information:\n");
1038 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1039 ipr_err("Adapter Card Information:\n");
1040 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1042 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1043 be32_to_cpu(error->ioa_data[0]),
1044 be32_to_cpu(error->ioa_data[1]),
1045 be32_to_cpu(error->ioa_data[2]));
1049 * ipr_log_enhanced_config_error - Log a configuration error.
1050 * @ioa_cfg: ioa config struct
1051 * @hostrcb: hostrcb struct
1056 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1057 struct ipr_hostrcb *hostrcb)
1059 int errors_logged, i;
1060 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1061 struct ipr_hostrcb_type_13_error *error;
1063 error = &hostrcb->hcam.u.error.u.type_13_error;
1064 errors_logged = be32_to_cpu(error->errors_logged);
1066 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1067 be32_to_cpu(error->errors_detected), errors_logged);
1069 dev_entry = error->dev;
1071 for (i = 0; i < errors_logged; i++, dev_entry++) {
1074 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1075 ipr_log_ext_vpd(&dev_entry->vpd);
1077 ipr_err("-----New Device Information-----\n");
1078 ipr_log_ext_vpd(&dev_entry->new_vpd);
1080 ipr_err("Cache Directory Card Information:\n");
1081 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1083 ipr_err("Adapter Card Information:\n");
1084 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1089 * ipr_log_config_error - Log a configuration error.
1090 * @ioa_cfg: ioa config struct
1091 * @hostrcb: hostrcb struct
1096 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1097 struct ipr_hostrcb *hostrcb)
1099 int errors_logged, i;
1100 struct ipr_hostrcb_device_data_entry *dev_entry;
1101 struct ipr_hostrcb_type_03_error *error;
1103 error = &hostrcb->hcam.u.error.u.type_03_error;
1104 errors_logged = be32_to_cpu(error->errors_logged);
1106 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1107 be32_to_cpu(error->errors_detected), errors_logged);
1109 dev_entry = error->dev;
1111 for (i = 0; i < errors_logged; i++, dev_entry++) {
1114 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1115 ipr_log_vpd(&dev_entry->vpd);
1117 ipr_err("-----New Device Information-----\n");
1118 ipr_log_vpd(&dev_entry->new_vpd);
1120 ipr_err("Cache Directory Card Information:\n");
1121 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1123 ipr_err("Adapter Card Information:\n");
1124 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1126 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1127 be32_to_cpu(dev_entry->ioa_data[0]),
1128 be32_to_cpu(dev_entry->ioa_data[1]),
1129 be32_to_cpu(dev_entry->ioa_data[2]),
1130 be32_to_cpu(dev_entry->ioa_data[3]),
1131 be32_to_cpu(dev_entry->ioa_data[4]));
1136 * ipr_log_enhanced_array_error - Log an array configuration error.
1137 * @ioa_cfg: ioa config struct
1138 * @hostrcb: hostrcb struct
1143 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1144 struct ipr_hostrcb *hostrcb)
1147 struct ipr_hostrcb_type_14_error *error;
1148 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1149 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1151 error = &hostrcb->hcam.u.error.u.type_14_error;
1155 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1156 error->protection_level,
1157 ioa_cfg->host->host_no,
1158 error->last_func_vset_res_addr.bus,
1159 error->last_func_vset_res_addr.target,
1160 error->last_func_vset_res_addr.lun);
1164 array_entry = error->array_member;
1165 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1166 sizeof(error->array_member));
1168 for (i = 0; i < num_entries; i++, array_entry++) {
1169 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1172 if (be32_to_cpu(error->exposed_mode_adn) == i)
1173 ipr_err("Exposed Array Member %d:\n", i);
1175 ipr_err("Array Member %d:\n", i);
1177 ipr_log_ext_vpd(&array_entry->vpd);
1178 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1179 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1180 "Expected Location");
1187 * ipr_log_array_error - Log an array configuration error.
1188 * @ioa_cfg: ioa config struct
1189 * @hostrcb: hostrcb struct
1194 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1195 struct ipr_hostrcb *hostrcb)
1198 struct ipr_hostrcb_type_04_error *error;
1199 struct ipr_hostrcb_array_data_entry *array_entry;
1200 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1202 error = &hostrcb->hcam.u.error.u.type_04_error;
1206 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1207 error->protection_level,
1208 ioa_cfg->host->host_no,
1209 error->last_func_vset_res_addr.bus,
1210 error->last_func_vset_res_addr.target,
1211 error->last_func_vset_res_addr.lun);
1215 array_entry = error->array_member;
1217 for (i = 0; i < 18; i++) {
1218 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1224 ipr_err("Array Member %d:\n", i);
1226 ipr_log_vpd(&array_entry->vpd);
1228 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1229 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1230 "Expected Location");
1235 array_entry = error->array_member2;
1242 * ipr_log_hex_data - Log additional hex IOA error data.
1243 * @ioa_cfg: ioa config struct
1244 * @data: IOA error data
1250 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1257 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1258 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1260 for (i = 0; i < len / 4; i += 4) {
1261 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1262 be32_to_cpu(data[i]),
1263 be32_to_cpu(data[i+1]),
1264 be32_to_cpu(data[i+2]),
1265 be32_to_cpu(data[i+3]));
1270 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1271 * @ioa_cfg: ioa config struct
1272 * @hostrcb: hostrcb struct
1277 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1278 struct ipr_hostrcb *hostrcb)
1280 struct ipr_hostrcb_type_17_error *error;
1282 error = &hostrcb->hcam.u.error.u.type_17_error;
1283 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1285 ipr_err("%s\n", error->failure_reason);
1286 ipr_err("Remote Adapter VPD:\n");
1287 ipr_log_ext_vpd(&error->vpd);
1288 ipr_log_hex_data(ioa_cfg, error->data,
1289 be32_to_cpu(hostrcb->hcam.length) -
1290 (offsetof(struct ipr_hostrcb_error, u) +
1291 offsetof(struct ipr_hostrcb_type_17_error, data)));
1295 * ipr_log_dual_ioa_error - Log a dual adapter error.
1296 * @ioa_cfg: ioa config struct
1297 * @hostrcb: hostrcb struct
1302 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1303 struct ipr_hostrcb *hostrcb)
1305 struct ipr_hostrcb_type_07_error *error;
1307 error = &hostrcb->hcam.u.error.u.type_07_error;
1308 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1310 ipr_err("%s\n", error->failure_reason);
1311 ipr_err("Remote Adapter VPD:\n");
1312 ipr_log_vpd(&error->vpd);
1313 ipr_log_hex_data(ioa_cfg, error->data,
1314 be32_to_cpu(hostrcb->hcam.length) -
1315 (offsetof(struct ipr_hostrcb_error, u) +
1316 offsetof(struct ipr_hostrcb_type_07_error, data)));
1319 static const struct {
1322 } path_active_desc[] = {
1323 { IPR_PATH_NO_INFO, "Path" },
1324 { IPR_PATH_ACTIVE, "Active path" },
1325 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1328 static const struct {
1331 } path_state_desc[] = {
1332 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1333 { IPR_PATH_HEALTHY, "is healthy" },
1334 { IPR_PATH_DEGRADED, "is degraded" },
1335 { IPR_PATH_FAILED, "is failed" }
1339 * ipr_log_fabric_path - Log a fabric path error
1340 * @hostrcb: hostrcb struct
1341 * @fabric: fabric descriptor
1346 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1347 struct ipr_hostrcb_fabric_desc *fabric)
1350 u8 path_state = fabric->path_state;
1351 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1352 u8 state = path_state & IPR_PATH_STATE_MASK;
1354 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1355 if (path_active_desc[i].active != active)
1358 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1359 if (path_state_desc[j].state != state)
1362 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1363 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1364 path_active_desc[i].desc, path_state_desc[j].desc,
1366 } else if (fabric->cascaded_expander == 0xff) {
1367 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1368 path_active_desc[i].desc, path_state_desc[j].desc,
1369 fabric->ioa_port, fabric->phy);
1370 } else if (fabric->phy == 0xff) {
1371 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1372 path_active_desc[i].desc, path_state_desc[j].desc,
1373 fabric->ioa_port, fabric->cascaded_expander);
1375 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1376 path_active_desc[i].desc, path_state_desc[j].desc,
1377 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1383 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1384 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1387 static const struct {
1390 } path_type_desc[] = {
1391 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1392 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1393 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1394 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1397 static const struct {
1400 } path_status_desc[] = {
1401 { IPR_PATH_CFG_NO_PROB, "Functional" },
1402 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1403 { IPR_PATH_CFG_FAILED, "Failed" },
1404 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1405 { IPR_PATH_NOT_DETECTED, "Missing" },
1406 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1409 static const char *link_rate[] = {
1412 "phy reset problem",
1429 * ipr_log_path_elem - Log a fabric path element.
1430 * @hostrcb: hostrcb struct
1431 * @cfg: fabric path element struct
1436 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1437 struct ipr_hostrcb_config_element *cfg)
1440 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1441 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1443 if (type == IPR_PATH_CFG_NOT_EXIST)
1446 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1447 if (path_type_desc[i].type != type)
1450 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1451 if (path_status_desc[j].status != status)
1454 if (type == IPR_PATH_CFG_IOA_PORT) {
1455 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1456 path_status_desc[j].desc, path_type_desc[i].desc,
1457 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1458 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1460 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1461 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1462 path_status_desc[j].desc, path_type_desc[i].desc,
1463 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1464 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1465 } else if (cfg->cascaded_expander == 0xff) {
1466 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1467 "WWN=%08X%08X\n", path_status_desc[j].desc,
1468 path_type_desc[i].desc, cfg->phy,
1469 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1470 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1471 } else if (cfg->phy == 0xff) {
1472 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1473 "WWN=%08X%08X\n", path_status_desc[j].desc,
1474 path_type_desc[i].desc, cfg->cascaded_expander,
1475 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1476 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1478 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1479 "WWN=%08X%08X\n", path_status_desc[j].desc,
1480 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1481 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1482 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1489 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1490 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1491 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1492 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1496 * ipr_log_fabric_error - Log a fabric error.
1497 * @ioa_cfg: ioa config struct
1498 * @hostrcb: hostrcb struct
1503 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1504 struct ipr_hostrcb *hostrcb)
1506 struct ipr_hostrcb_type_20_error *error;
1507 struct ipr_hostrcb_fabric_desc *fabric;
1508 struct ipr_hostrcb_config_element *cfg;
1511 error = &hostrcb->hcam.u.error.u.type_20_error;
1512 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1513 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1515 add_len = be32_to_cpu(hostrcb->hcam.length) -
1516 (offsetof(struct ipr_hostrcb_error, u) +
1517 offsetof(struct ipr_hostrcb_type_20_error, desc));
1519 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1520 ipr_log_fabric_path(hostrcb, fabric);
1521 for_each_fabric_cfg(fabric, cfg)
1522 ipr_log_path_elem(hostrcb, cfg);
1524 add_len -= be16_to_cpu(fabric->length);
1525 fabric = (struct ipr_hostrcb_fabric_desc *)
1526 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1529 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1533 * ipr_log_generic_error - Log an adapter error.
1534 * @ioa_cfg: ioa config struct
1535 * @hostrcb: hostrcb struct
1540 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1541 struct ipr_hostrcb *hostrcb)
1543 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1544 be32_to_cpu(hostrcb->hcam.length));
1548 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1551 * This function will return the index of into the ipr_error_table
1552 * for the specified IOASC. If the IOASC is not in the table,
1553 * 0 will be returned, which points to the entry used for unknown errors.
1556 * index into the ipr_error_table
1558 static u32 ipr_get_error(u32 ioasc)
1562 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1563 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1570 * ipr_handle_log_data - Log an adapter error.
1571 * @ioa_cfg: ioa config struct
1572 * @hostrcb: hostrcb struct
1574 * This function logs an adapter error to the system.
1579 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1580 struct ipr_hostrcb *hostrcb)
1585 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1588 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1589 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1591 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1593 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1594 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1595 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1596 scsi_report_bus_reset(ioa_cfg->host,
1597 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1600 error_index = ipr_get_error(ioasc);
1602 if (!ipr_error_table[error_index].log_hcam)
1605 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1607 /* Set indication we have logged an error */
1608 ioa_cfg->errors_logged++;
1610 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1612 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1613 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1615 switch (hostrcb->hcam.overlay_id) {
1616 case IPR_HOST_RCB_OVERLAY_ID_2:
1617 ipr_log_cache_error(ioa_cfg, hostrcb);
1619 case IPR_HOST_RCB_OVERLAY_ID_3:
1620 ipr_log_config_error(ioa_cfg, hostrcb);
1622 case IPR_HOST_RCB_OVERLAY_ID_4:
1623 case IPR_HOST_RCB_OVERLAY_ID_6:
1624 ipr_log_array_error(ioa_cfg, hostrcb);
1626 case IPR_HOST_RCB_OVERLAY_ID_7:
1627 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1629 case IPR_HOST_RCB_OVERLAY_ID_12:
1630 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1632 case IPR_HOST_RCB_OVERLAY_ID_13:
1633 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1635 case IPR_HOST_RCB_OVERLAY_ID_14:
1636 case IPR_HOST_RCB_OVERLAY_ID_16:
1637 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1639 case IPR_HOST_RCB_OVERLAY_ID_17:
1640 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1642 case IPR_HOST_RCB_OVERLAY_ID_20:
1643 ipr_log_fabric_error(ioa_cfg, hostrcb);
1645 case IPR_HOST_RCB_OVERLAY_ID_1:
1646 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1648 ipr_log_generic_error(ioa_cfg, hostrcb);
1654 * ipr_process_error - Op done function for an adapter error log.
1655 * @ipr_cmd: ipr command struct
1657 * This function is the op done function for an error log host
1658 * controlled async from the adapter. It will log the error and
1659 * send the HCAM back to the adapter.
1664 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1666 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1667 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1668 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1670 list_del(&hostrcb->queue);
1671 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1674 ipr_handle_log_data(ioa_cfg, hostrcb);
1675 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1676 dev_err(&ioa_cfg->pdev->dev,
1677 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1680 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1684 * ipr_timeout - An internally generated op has timed out.
1685 * @ipr_cmd: ipr command struct
1687 * This function blocks host requests and initiates an
1693 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1695 unsigned long lock_flags = 0;
1696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1699 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1701 ioa_cfg->errors_logged++;
1702 dev_err(&ioa_cfg->pdev->dev,
1703 "Adapter being reset due to command timeout.\n");
1705 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1706 ioa_cfg->sdt_state = GET_DUMP;
1708 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1709 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1711 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1716 * ipr_oper_timeout - Adapter timed out transitioning to operational
1717 * @ipr_cmd: ipr command struct
1719 * This function blocks host requests and initiates an
1725 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1727 unsigned long lock_flags = 0;
1728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1733 ioa_cfg->errors_logged++;
1734 dev_err(&ioa_cfg->pdev->dev,
1735 "Adapter timed out transitioning to operational.\n");
1737 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1738 ioa_cfg->sdt_state = GET_DUMP;
1740 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1742 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1743 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1746 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1751 * ipr_reset_reload - Reset/Reload the IOA
1752 * @ioa_cfg: ioa config struct
1753 * @shutdown_type: shutdown type
1755 * This function resets the adapter and re-initializes it.
1756 * This function assumes that all new host commands have been stopped.
1760 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1761 enum ipr_shutdown_type shutdown_type)
1763 if (!ioa_cfg->in_reset_reload)
1764 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1766 spin_unlock_irq(ioa_cfg->host->host_lock);
1767 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1768 spin_lock_irq(ioa_cfg->host->host_lock);
1770 /* If we got hit with a host reset while we were already resetting
1771 the adapter for some reason, and the reset failed. */
1772 if (ioa_cfg->ioa_is_dead) {
1781 * ipr_find_ses_entry - Find matching SES in SES table
1782 * @res: resource entry struct of SES
1785 * pointer to SES table entry / NULL on failure
1787 static const struct ipr_ses_table_entry *
1788 ipr_find_ses_entry(struct ipr_resource_entry *res)
1791 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1793 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1794 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1795 if (ste->compare_product_id_byte[j] == 'X') {
1796 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1804 if (matches == IPR_PROD_ID_LEN)
1812 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1813 * @ioa_cfg: ioa config struct
1815 * @bus_width: bus width
1818 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1819 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1820 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1821 * max 160MHz = max 320MB/sec).
1823 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1825 struct ipr_resource_entry *res;
1826 const struct ipr_ses_table_entry *ste;
1827 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1829 /* Loop through each config table entry in the config table buffer */
1830 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1831 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1834 if (bus != res->cfgte.res_addr.bus)
1837 if (!(ste = ipr_find_ses_entry(res)))
1840 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1843 return max_xfer_rate;
1847 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1848 * @ioa_cfg: ioa config struct
1849 * @max_delay: max delay in micro-seconds to wait
1851 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1854 * 0 on success / other on failure
1856 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1858 volatile u32 pcii_reg;
1861 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1862 while (delay < max_delay) {
1863 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1865 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1868 /* udelay cannot be used if delay is more than a few milliseconds */
1869 if ((delay / 1000) > MAX_UDELAY_MS)
1870 mdelay(delay / 1000);
1880 * ipr_get_ldump_data_section - Dump IOA memory
1881 * @ioa_cfg: ioa config struct
1882 * @start_addr: adapter address to dump
1883 * @dest: destination kernel buffer
1884 * @length_in_words: length to dump in 4 byte words
1887 * 0 on success / -EIO on failure
1889 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1891 __be32 *dest, u32 length_in_words)
1893 volatile u32 temp_pcii_reg;
1896 /* Write IOA interrupt reg starting LDUMP state */
1897 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1898 ioa_cfg->regs.set_uproc_interrupt_reg);
1900 /* Wait for IO debug acknowledge */
1901 if (ipr_wait_iodbg_ack(ioa_cfg,
1902 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1903 dev_err(&ioa_cfg->pdev->dev,
1904 "IOA dump long data transfer timeout\n");
1908 /* Signal LDUMP interlocked - clear IO debug ack */
1909 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1910 ioa_cfg->regs.clr_interrupt_reg);
1912 /* Write Mailbox with starting address */
1913 writel(start_addr, ioa_cfg->ioa_mailbox);
1915 /* Signal address valid - clear IOA Reset alert */
1916 writel(IPR_UPROCI_RESET_ALERT,
1917 ioa_cfg->regs.clr_uproc_interrupt_reg);
1919 for (i = 0; i < length_in_words; i++) {
1920 /* Wait for IO debug acknowledge */
1921 if (ipr_wait_iodbg_ack(ioa_cfg,
1922 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1923 dev_err(&ioa_cfg->pdev->dev,
1924 "IOA dump short data transfer timeout\n");
1928 /* Read data from mailbox and increment destination pointer */
1929 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1932 /* For all but the last word of data, signal data received */
1933 if (i < (length_in_words - 1)) {
1934 /* Signal dump data received - Clear IO debug Ack */
1935 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1936 ioa_cfg->regs.clr_interrupt_reg);
1940 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1941 writel(IPR_UPROCI_RESET_ALERT,
1942 ioa_cfg->regs.set_uproc_interrupt_reg);
1944 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1945 ioa_cfg->regs.clr_uproc_interrupt_reg);
1947 /* Signal dump data received - Clear IO debug Ack */
1948 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1949 ioa_cfg->regs.clr_interrupt_reg);
1951 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1952 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1954 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1956 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1966 #ifdef CONFIG_SCSI_IPR_DUMP
1968 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1969 * @ioa_cfg: ioa config struct
1970 * @pci_address: adapter address
1971 * @length: length of data to copy
1973 * Copy data from PCI adapter to kernel buffer.
1974 * Note: length MUST be a 4 byte multiple
1976 * 0 on success / other on failure
1978 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1979 unsigned long pci_address, u32 length)
1981 int bytes_copied = 0;
1982 int cur_len, rc, rem_len, rem_page_len;
1984 unsigned long lock_flags = 0;
1985 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1987 while (bytes_copied < length &&
1988 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1989 if (ioa_dump->page_offset >= PAGE_SIZE ||
1990 ioa_dump->page_offset == 0) {
1991 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1995 return bytes_copied;
1998 ioa_dump->page_offset = 0;
1999 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2000 ioa_dump->next_page_index++;
2002 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2004 rem_len = length - bytes_copied;
2005 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2006 cur_len = min(rem_len, rem_page_len);
2008 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2009 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2012 rc = ipr_get_ldump_data_section(ioa_cfg,
2013 pci_address + bytes_copied,
2014 &page[ioa_dump->page_offset / 4],
2015 (cur_len / sizeof(u32)));
2017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2020 ioa_dump->page_offset += cur_len;
2021 bytes_copied += cur_len;
2029 return bytes_copied;
2033 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2034 * @hdr: dump entry header struct
2039 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2041 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2043 hdr->offset = sizeof(*hdr);
2044 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2048 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2049 * @ioa_cfg: ioa config struct
2050 * @driver_dump: driver dump struct
2055 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2056 struct ipr_driver_dump *driver_dump)
2058 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2060 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2061 driver_dump->ioa_type_entry.hdr.len =
2062 sizeof(struct ipr_dump_ioa_type_entry) -
2063 sizeof(struct ipr_dump_entry_header);
2064 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2065 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2066 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2067 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2068 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2069 ucode_vpd->minor_release[1];
2070 driver_dump->hdr.num_entries++;
2074 * ipr_dump_version_data - Fill in the driver version in the dump.
2075 * @ioa_cfg: ioa config struct
2076 * @driver_dump: driver dump struct
2081 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2082 struct ipr_driver_dump *driver_dump)
2084 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2085 driver_dump->version_entry.hdr.len =
2086 sizeof(struct ipr_dump_version_entry) -
2087 sizeof(struct ipr_dump_entry_header);
2088 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2089 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2090 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2091 driver_dump->hdr.num_entries++;
2095 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2096 * @ioa_cfg: ioa config struct
2097 * @driver_dump: driver dump struct
2102 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2103 struct ipr_driver_dump *driver_dump)
2105 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2106 driver_dump->trace_entry.hdr.len =
2107 sizeof(struct ipr_dump_trace_entry) -
2108 sizeof(struct ipr_dump_entry_header);
2109 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2110 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2111 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2112 driver_dump->hdr.num_entries++;
2116 * ipr_dump_location_data - Fill in the IOA location in the dump.
2117 * @ioa_cfg: ioa config struct
2118 * @driver_dump: driver dump struct
2123 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2124 struct ipr_driver_dump *driver_dump)
2126 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2127 driver_dump->location_entry.hdr.len =
2128 sizeof(struct ipr_dump_location_entry) -
2129 sizeof(struct ipr_dump_entry_header);
2130 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2131 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2132 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2133 driver_dump->hdr.num_entries++;
2137 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2138 * @ioa_cfg: ioa config struct
2139 * @dump: dump struct
2144 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2146 unsigned long start_addr, sdt_word;
2147 unsigned long lock_flags = 0;
2148 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2149 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2150 u32 num_entries, start_off, end_off;
2151 u32 bytes_to_copy, bytes_copied, rc;
2152 struct ipr_sdt *sdt;
2157 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2159 if (ioa_cfg->sdt_state != GET_DUMP) {
2160 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2164 start_addr = readl(ioa_cfg->ioa_mailbox);
2166 if (!ipr_sdt_is_fmt2(start_addr)) {
2167 dev_err(&ioa_cfg->pdev->dev,
2168 "Invalid dump table format: %lx\n", start_addr);
2169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2173 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2175 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2177 /* Initialize the overall dump header */
2178 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2179 driver_dump->hdr.num_entries = 1;
2180 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2181 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2182 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2183 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2185 ipr_dump_version_data(ioa_cfg, driver_dump);
2186 ipr_dump_location_data(ioa_cfg, driver_dump);
2187 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2188 ipr_dump_trace_data(ioa_cfg, driver_dump);
2190 /* Update dump_header */
2191 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2193 /* IOA Dump entry */
2194 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2195 ioa_dump->format = IPR_SDT_FMT2;
2196 ioa_dump->hdr.len = 0;
2197 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2198 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2200 /* First entries in sdt are actually a list of dump addresses and
2201 lengths to gather the real dump data. sdt represents the pointer
2202 to the ioa generated dump table. Dump data will be extracted based
2203 on entries in this table */
2204 sdt = &ioa_dump->sdt;
2206 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2207 sizeof(struct ipr_sdt) / sizeof(__be32));
2209 /* Smart Dump table is ready to use and the first entry is valid */
2210 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2211 dev_err(&ioa_cfg->pdev->dev,
2212 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2213 rc, be32_to_cpu(sdt->hdr.state));
2214 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2215 ioa_cfg->sdt_state = DUMP_OBTAINED;
2216 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2220 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2222 if (num_entries > IPR_NUM_SDT_ENTRIES)
2223 num_entries = IPR_NUM_SDT_ENTRIES;
2225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2227 for (i = 0; i < num_entries; i++) {
2228 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2229 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2233 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2234 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2235 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2236 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2238 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2239 bytes_to_copy = end_off - start_off;
2240 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2241 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2245 /* Copy data from adapter to driver buffers */
2246 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2249 ioa_dump->hdr.len += bytes_copied;
2251 if (bytes_copied != bytes_to_copy) {
2252 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2259 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2261 /* Update dump_header */
2262 driver_dump->hdr.len += ioa_dump->hdr.len;
2264 ioa_cfg->sdt_state = DUMP_OBTAINED;
2269 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2273 * ipr_release_dump - Free adapter dump memory
2274 * @kref: kref struct
2279 static void ipr_release_dump(struct kref *kref)
2281 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2282 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2283 unsigned long lock_flags = 0;
2287 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2288 ioa_cfg->dump = NULL;
2289 ioa_cfg->sdt_state = INACTIVE;
2290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2292 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2293 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2300 * ipr_worker_thread - Worker thread
2301 * @work: ioa config struct
2303 * Called at task level from a work thread. This function takes care
2304 * of adding and removing device from the mid-layer as configuration
2305 * changes are detected by the adapter.
2310 static void ipr_worker_thread(struct work_struct *work)
2312 unsigned long lock_flags;
2313 struct ipr_resource_entry *res;
2314 struct scsi_device *sdev;
2315 struct ipr_dump *dump;
2316 struct ipr_ioa_cfg *ioa_cfg =
2317 container_of(work, struct ipr_ioa_cfg, work_q);
2318 u8 bus, target, lun;
2322 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2324 if (ioa_cfg->sdt_state == GET_DUMP) {
2325 dump = ioa_cfg->dump;
2327 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2330 kref_get(&dump->kref);
2331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2332 ipr_get_ioa_dump(ioa_cfg, dump);
2333 kref_put(&dump->kref, ipr_release_dump);
2335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2336 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2337 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2338 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2350 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2351 if (res->del_from_ml && res->sdev) {
2354 if (!scsi_device_get(sdev)) {
2355 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2356 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2357 scsi_remove_device(sdev);
2358 scsi_device_put(sdev);
2359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2366 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2367 if (res->add_to_ml) {
2368 bus = res->cfgte.res_addr.bus;
2369 target = res->cfgte.res_addr.target;
2370 lun = res->cfgte.res_addr.lun;
2372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2373 scsi_add_device(ioa_cfg->host, bus, target, lun);
2374 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2379 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2380 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2384 #ifdef CONFIG_SCSI_IPR_TRACE
2386 * ipr_read_trace - Dump the adapter trace
2387 * @kobj: kobject struct
2390 * @count: buffer size
2393 * number of bytes printed to buffer
2395 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2396 loff_t off, size_t count)
2398 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2399 struct Scsi_Host *shost = class_to_shost(cdev);
2400 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2401 unsigned long lock_flags = 0;
2402 int size = IPR_TRACE_SIZE;
2403 char *src = (char *)ioa_cfg->trace;
2407 if (off + count > size) {
2412 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2413 memcpy(buf, &src[off], count);
2414 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2418 static struct bin_attribute ipr_trace_attr = {
2424 .read = ipr_read_trace,
2428 static const struct {
2429 enum ipr_cache_state state;
2431 } cache_state [] = {
2432 { CACHE_NONE, "none" },
2433 { CACHE_DISABLED, "disabled" },
2434 { CACHE_ENABLED, "enabled" }
2438 * ipr_show_write_caching - Show the write caching attribute
2439 * @class_dev: class device struct
2443 * number of bytes printed to buffer
2445 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2447 struct Scsi_Host *shost = class_to_shost(class_dev);
2448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2449 unsigned long lock_flags = 0;
2452 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2453 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2454 if (cache_state[i].state == ioa_cfg->cache_state) {
2455 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2459 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2465 * ipr_store_write_caching - Enable/disable adapter write cache
2466 * @class_dev: class_device struct
2468 * @count: buffer size
2470 * This function will enable/disable adapter write cache.
2473 * count on success / other on failure
2475 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2476 const char *buf, size_t count)
2478 struct Scsi_Host *shost = class_to_shost(class_dev);
2479 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2480 unsigned long lock_flags = 0;
2481 enum ipr_cache_state new_state = CACHE_INVALID;
2484 if (!capable(CAP_SYS_ADMIN))
2486 if (ioa_cfg->cache_state == CACHE_NONE)
2489 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2490 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2491 new_state = cache_state[i].state;
2496 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2499 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2500 if (ioa_cfg->cache_state == new_state) {
2501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2505 ioa_cfg->cache_state = new_state;
2506 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2507 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2508 if (!ioa_cfg->in_reset_reload)
2509 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2510 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2511 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2516 static struct class_device_attribute ipr_ioa_cache_attr = {
2518 .name = "write_cache",
2519 .mode = S_IRUGO | S_IWUSR,
2521 .show = ipr_show_write_caching,
2522 .store = ipr_store_write_caching
2526 * ipr_show_fw_version - Show the firmware version
2527 * @class_dev: class device struct
2531 * number of bytes printed to buffer
2533 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2535 struct Scsi_Host *shost = class_to_shost(class_dev);
2536 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2537 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2538 unsigned long lock_flags = 0;
2541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2542 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2543 ucode_vpd->major_release, ucode_vpd->card_type,
2544 ucode_vpd->minor_release[0],
2545 ucode_vpd->minor_release[1]);
2546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2550 static struct class_device_attribute ipr_fw_version_attr = {
2552 .name = "fw_version",
2555 .show = ipr_show_fw_version,
2559 * ipr_show_log_level - Show the adapter's error logging level
2560 * @class_dev: class device struct
2564 * number of bytes printed to buffer
2566 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2568 struct Scsi_Host *shost = class_to_shost(class_dev);
2569 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2570 unsigned long lock_flags = 0;
2573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2574 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2575 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2580 * ipr_store_log_level - Change the adapter's error logging level
2581 * @class_dev: class device struct
2585 * number of bytes printed to buffer
2587 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2588 const char *buf, size_t count)
2590 struct Scsi_Host *shost = class_to_shost(class_dev);
2591 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2592 unsigned long lock_flags = 0;
2594 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2595 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2600 static struct class_device_attribute ipr_log_level_attr = {
2602 .name = "log_level",
2603 .mode = S_IRUGO | S_IWUSR,
2605 .show = ipr_show_log_level,
2606 .store = ipr_store_log_level
2610 * ipr_store_diagnostics - IOA Diagnostics interface
2611 * @class_dev: class_device struct
2613 * @count: buffer size
2615 * This function will reset the adapter and wait a reasonable
2616 * amount of time for any errors that the adapter might log.
2619 * count on success / other on failure
2621 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2622 const char *buf, size_t count)
2624 struct Scsi_Host *shost = class_to_shost(class_dev);
2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2626 unsigned long lock_flags = 0;
2629 if (!capable(CAP_SYS_ADMIN))
2632 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2633 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2634 ioa_cfg->errors_logged = 0;
2635 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2637 if (ioa_cfg->in_reset_reload) {
2638 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2639 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2641 /* Wait for a second for any errors to be logged */
2644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2648 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2649 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2656 static struct class_device_attribute ipr_diagnostics_attr = {
2658 .name = "run_diagnostics",
2661 .store = ipr_store_diagnostics
2665 * ipr_show_adapter_state - Show the adapter's state
2666 * @class_dev: class device struct
2670 * number of bytes printed to buffer
2672 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2674 struct Scsi_Host *shost = class_to_shost(class_dev);
2675 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2676 unsigned long lock_flags = 0;
2679 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2680 if (ioa_cfg->ioa_is_dead)
2681 len = snprintf(buf, PAGE_SIZE, "offline\n");
2683 len = snprintf(buf, PAGE_SIZE, "online\n");
2684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2689 * ipr_store_adapter_state - Change adapter state
2690 * @class_dev: class_device struct
2692 * @count: buffer size
2694 * This function will change the adapter's state.
2697 * count on success / other on failure
2699 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2700 const char *buf, size_t count)
2702 struct Scsi_Host *shost = class_to_shost(class_dev);
2703 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2704 unsigned long lock_flags;
2707 if (!capable(CAP_SYS_ADMIN))
2710 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2711 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2712 ioa_cfg->ioa_is_dead = 0;
2713 ioa_cfg->reset_retries = 0;
2714 ioa_cfg->in_ioa_bringdown = 0;
2715 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2718 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2723 static struct class_device_attribute ipr_ioa_state_attr = {
2726 .mode = S_IRUGO | S_IWUSR,
2728 .show = ipr_show_adapter_state,
2729 .store = ipr_store_adapter_state
2733 * ipr_store_reset_adapter - Reset the adapter
2734 * @class_dev: class_device struct
2736 * @count: buffer size
2738 * This function will reset the adapter.
2741 * count on success / other on failure
2743 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2744 const char *buf, size_t count)
2746 struct Scsi_Host *shost = class_to_shost(class_dev);
2747 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2748 unsigned long lock_flags;
2751 if (!capable(CAP_SYS_ADMIN))
2754 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2755 if (!ioa_cfg->in_reset_reload)
2756 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2757 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2758 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2763 static struct class_device_attribute ipr_ioa_reset_attr = {
2765 .name = "reset_host",
2768 .store = ipr_store_reset_adapter
2772 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2773 * @buf_len: buffer length
2775 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2776 * list to use for microcode download
2779 * pointer to sglist / NULL on failure
2781 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2783 int sg_size, order, bsize_elem, num_elem, i, j;
2784 struct ipr_sglist *sglist;
2785 struct scatterlist *scatterlist;
2788 /* Get the minimum size per scatter/gather element */
2789 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2791 /* Get the actual size per element */
2792 order = get_order(sg_size);
2794 /* Determine the actual number of bytes per element */
2795 bsize_elem = PAGE_SIZE * (1 << order);
2797 /* Determine the actual number of sg entries needed */
2798 if (buf_len % bsize_elem)
2799 num_elem = (buf_len / bsize_elem) + 1;
2801 num_elem = buf_len / bsize_elem;
2803 /* Allocate a scatter/gather list for the DMA */
2804 sglist = kzalloc(sizeof(struct ipr_sglist) +
2805 (sizeof(struct scatterlist) * (num_elem - 1)),
2808 if (sglist == NULL) {
2813 scatterlist = sglist->scatterlist;
2815 sglist->order = order;
2816 sglist->num_sg = num_elem;
2818 /* Allocate a bunch of sg elements */
2819 for (i = 0; i < num_elem; i++) {
2820 page = alloc_pages(GFP_KERNEL, order);
2824 /* Free up what we already allocated */
2825 for (j = i - 1; j >= 0; j--)
2826 __free_pages(scatterlist[j].page, order);
2831 scatterlist[i].page = page;
2838 * ipr_free_ucode_buffer - Frees a microcode download buffer
2839 * @p_dnld: scatter/gather list pointer
2841 * Free a DMA'able ucode download buffer previously allocated with
2842 * ipr_alloc_ucode_buffer
2847 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2851 for (i = 0; i < sglist->num_sg; i++)
2852 __free_pages(sglist->scatterlist[i].page, sglist->order);
2858 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2859 * @sglist: scatter/gather list pointer
2860 * @buffer: buffer pointer
2861 * @len: buffer length
2863 * Copy a microcode image from a user buffer into a buffer allocated by
2864 * ipr_alloc_ucode_buffer
2867 * 0 on success / other on failure
2869 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2870 u8 *buffer, u32 len)
2872 int bsize_elem, i, result = 0;
2873 struct scatterlist *scatterlist;
2876 /* Determine the actual number of bytes per element */
2877 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2879 scatterlist = sglist->scatterlist;
2881 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2882 kaddr = kmap(scatterlist[i].page);
2883 memcpy(kaddr, buffer, bsize_elem);
2884 kunmap(scatterlist[i].page);
2886 scatterlist[i].length = bsize_elem;
2894 if (len % bsize_elem) {
2895 kaddr = kmap(scatterlist[i].page);
2896 memcpy(kaddr, buffer, len % bsize_elem);
2897 kunmap(scatterlist[i].page);
2899 scatterlist[i].length = len % bsize_elem;
2902 sglist->buffer_len = len;
2907 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2908 * @ipr_cmd: ipr command struct
2909 * @sglist: scatter/gather list
2911 * Builds a microcode download IOA data list (IOADL).
2914 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2915 struct ipr_sglist *sglist)
2917 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2918 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2919 struct scatterlist *scatterlist = sglist->scatterlist;
2922 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2923 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2924 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2925 ioarcb->write_ioadl_len =
2926 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2928 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2929 ioadl[i].flags_and_data_len =
2930 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2932 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2935 ioadl[i-1].flags_and_data_len |=
2936 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2940 * ipr_update_ioa_ucode - Update IOA's microcode
2941 * @ioa_cfg: ioa config struct
2942 * @sglist: scatter/gather list
2944 * Initiate an adapter reset to update the IOA's microcode
2947 * 0 on success / -EIO on failure
2949 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2950 struct ipr_sglist *sglist)
2952 unsigned long lock_flags;
2954 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2956 if (ioa_cfg->ucode_sglist) {
2957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2958 dev_err(&ioa_cfg->pdev->dev,
2959 "Microcode download already in progress\n");
2963 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2964 sglist->num_sg, DMA_TO_DEVICE);
2966 if (!sglist->num_dma_sg) {
2967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2968 dev_err(&ioa_cfg->pdev->dev,
2969 "Failed to map microcode download buffer!\n");
2973 ioa_cfg->ucode_sglist = sglist;
2974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2976 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2979 ioa_cfg->ucode_sglist = NULL;
2980 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2985 * ipr_store_update_fw - Update the firmware on the adapter
2986 * @class_dev: class_device struct
2988 * @count: buffer size
2990 * This function will update the firmware on the adapter.
2993 * count on success / other on failure
2995 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2996 const char *buf, size_t count)
2998 struct Scsi_Host *shost = class_to_shost(class_dev);
2999 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3000 struct ipr_ucode_image_header *image_hdr;
3001 const struct firmware *fw_entry;
3002 struct ipr_sglist *sglist;
3005 int len, result, dnld_size;
3007 if (!capable(CAP_SYS_ADMIN))
3010 len = snprintf(fname, 99, "%s", buf);
3011 fname[len-1] = '\0';
3013 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3014 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3018 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3020 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3021 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3022 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3023 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3024 release_firmware(fw_entry);
3028 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3029 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3030 sglist = ipr_alloc_ucode_buffer(dnld_size);
3033 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3034 release_firmware(fw_entry);
3038 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3041 dev_err(&ioa_cfg->pdev->dev,
3042 "Microcode buffer copy to DMA buffer failed\n");
3046 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3051 ipr_free_ucode_buffer(sglist);
3052 release_firmware(fw_entry);
3056 static struct class_device_attribute ipr_update_fw_attr = {
3058 .name = "update_fw",
3061 .store = ipr_store_update_fw
3064 static struct class_device_attribute *ipr_ioa_attrs[] = {
3065 &ipr_fw_version_attr,
3066 &ipr_log_level_attr,
3067 &ipr_diagnostics_attr,
3068 &ipr_ioa_state_attr,
3069 &ipr_ioa_reset_attr,
3070 &ipr_update_fw_attr,
3071 &ipr_ioa_cache_attr,
3075 #ifdef CONFIG_SCSI_IPR_DUMP
3077 * ipr_read_dump - Dump the adapter
3078 * @kobj: kobject struct
3081 * @count: buffer size
3084 * number of bytes printed to buffer
3086 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3087 loff_t off, size_t count)
3089 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3090 struct Scsi_Host *shost = class_to_shost(cdev);
3091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3092 struct ipr_dump *dump;
3093 unsigned long lock_flags = 0;
3098 if (!capable(CAP_SYS_ADMIN))
3101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3102 dump = ioa_cfg->dump;
3104 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3105 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3108 kref_get(&dump->kref);
3109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3111 if (off > dump->driver_dump.hdr.len) {
3112 kref_put(&dump->kref, ipr_release_dump);
3116 if (off + count > dump->driver_dump.hdr.len) {
3117 count = dump->driver_dump.hdr.len - off;
3121 if (count && off < sizeof(dump->driver_dump)) {
3122 if (off + count > sizeof(dump->driver_dump))
3123 len = sizeof(dump->driver_dump) - off;
3126 src = (u8 *)&dump->driver_dump + off;
3127 memcpy(buf, src, len);
3133 off -= sizeof(dump->driver_dump);
3135 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3136 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3137 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3140 src = (u8 *)&dump->ioa_dump + off;
3141 memcpy(buf, src, len);
3147 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3150 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3151 len = PAGE_ALIGN(off) - off;
3154 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3155 src += off & ~PAGE_MASK;
3156 memcpy(buf, src, len);
3162 kref_put(&dump->kref, ipr_release_dump);
3167 * ipr_alloc_dump - Prepare for adapter dump
3168 * @ioa_cfg: ioa config struct
3171 * 0 on success / other on failure
3173 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3175 struct ipr_dump *dump;
3176 unsigned long lock_flags = 0;
3178 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3181 ipr_err("Dump memory allocation failed\n");
3185 kref_init(&dump->kref);
3186 dump->ioa_cfg = ioa_cfg;
3188 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3190 if (INACTIVE != ioa_cfg->sdt_state) {
3191 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3196 ioa_cfg->dump = dump;
3197 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3198 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3199 ioa_cfg->dump_taken = 1;
3200 schedule_work(&ioa_cfg->work_q);
3202 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3208 * ipr_free_dump - Free adapter dump memory
3209 * @ioa_cfg: ioa config struct
3212 * 0 on success / other on failure
3214 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3216 struct ipr_dump *dump;
3217 unsigned long lock_flags = 0;
3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3222 dump = ioa_cfg->dump;
3224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3228 ioa_cfg->dump = NULL;
3229 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3231 kref_put(&dump->kref, ipr_release_dump);
3238 * ipr_write_dump - Setup dump state of adapter
3239 * @kobj: kobject struct
3242 * @count: buffer size
3245 * number of bytes printed to buffer
3247 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3248 loff_t off, size_t count)
3250 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3251 struct Scsi_Host *shost = class_to_shost(cdev);
3252 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3255 if (!capable(CAP_SYS_ADMIN))
3259 rc = ipr_alloc_dump(ioa_cfg);
3260 else if (buf[0] == '0')
3261 rc = ipr_free_dump(ioa_cfg);
3271 static struct bin_attribute ipr_dump_attr = {
3274 .mode = S_IRUSR | S_IWUSR,
3277 .read = ipr_read_dump,
3278 .write = ipr_write_dump
3281 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3285 * ipr_change_queue_depth - Change the device's queue depth
3286 * @sdev: scsi device struct
3287 * @qdepth: depth to set
3292 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3294 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3295 struct ipr_resource_entry *res;
3296 unsigned long lock_flags = 0;
3298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3299 res = (struct ipr_resource_entry *)sdev->hostdata;
3301 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3302 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3303 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3305 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3306 return sdev->queue_depth;
3310 * ipr_change_queue_type - Change the device's queue type
3311 * @dsev: scsi device struct
3312 * @tag_type: type of tags to use
3315 * actual queue type set
3317 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3319 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3320 struct ipr_resource_entry *res;
3321 unsigned long lock_flags = 0;
3323 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3324 res = (struct ipr_resource_entry *)sdev->hostdata;
3327 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3329 * We don't bother quiescing the device here since the
3330 * adapter firmware does it for us.
3332 scsi_set_tag_type(sdev, tag_type);
3335 scsi_activate_tcq(sdev, sdev->queue_depth);
3337 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3343 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3348 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3349 * @dev: device struct
3353 * number of bytes printed to buffer
3355 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3357 struct scsi_device *sdev = to_scsi_device(dev);
3358 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3359 struct ipr_resource_entry *res;
3360 unsigned long lock_flags = 0;
3361 ssize_t len = -ENXIO;
3363 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3364 res = (struct ipr_resource_entry *)sdev->hostdata;
3366 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3367 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3371 static struct device_attribute ipr_adapter_handle_attr = {
3373 .name = "adapter_handle",
3376 .show = ipr_show_adapter_handle
3379 static struct device_attribute *ipr_dev_attrs[] = {
3380 &ipr_adapter_handle_attr,
3385 * ipr_biosparam - Return the HSC mapping
3386 * @sdev: scsi device struct
3387 * @block_device: block device pointer
3388 * @capacity: capacity of the device
3389 * @parm: Array containing returned HSC values.
3391 * This function generates the HSC parms that fdisk uses.
3392 * We want to make sure we return something that places partitions
3393 * on 4k boundaries for best performance with the IOA.
3398 static int ipr_biosparam(struct scsi_device *sdev,
3399 struct block_device *block_device,
3400 sector_t capacity, int *parm)
3408 cylinders = capacity;
3409 sector_div(cylinders, (128 * 32));
3414 parm[2] = cylinders;
3420 * ipr_find_starget - Find target based on bus/target.
3421 * @starget: scsi target struct
3424 * resource entry pointer if found / NULL if not found
3426 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3428 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3429 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3430 struct ipr_resource_entry *res;
3432 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3433 if ((res->cfgte.res_addr.bus == starget->channel) &&
3434 (res->cfgte.res_addr.target == starget->id) &&
3435 (res->cfgte.res_addr.lun == 0)) {
3443 static struct ata_port_info sata_port_info;
3446 * ipr_target_alloc - Prepare for commands to a SCSI target
3447 * @starget: scsi target struct
3449 * If the device is a SATA device, this function allocates an
3450 * ATA port with libata, else it does nothing.
3453 * 0 on success / non-0 on failure
3455 static int ipr_target_alloc(struct scsi_target *starget)
3457 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3459 struct ipr_sata_port *sata_port;
3460 struct ata_port *ap;
3461 struct ipr_resource_entry *res;
3462 unsigned long lock_flags;
3464 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3465 res = ipr_find_starget(starget);
3466 starget->hostdata = NULL;
3468 if (res && ipr_is_gata(res)) {
3469 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3470 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3474 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3476 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3477 sata_port->ioa_cfg = ioa_cfg;
3479 sata_port->res = res;
3481 res->sata_port = sata_port;
3482 ap->private_data = sata_port;
3483 starget->hostdata = sata_port;
3489 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3495 * ipr_target_destroy - Destroy a SCSI target
3496 * @starget: scsi target struct
3498 * If the device was a SATA device, this function frees the libata
3499 * ATA port, else it does nothing.
3502 static void ipr_target_destroy(struct scsi_target *starget)
3504 struct ipr_sata_port *sata_port = starget->hostdata;
3507 starget->hostdata = NULL;
3508 ata_sas_port_destroy(sata_port->ap);
3514 * ipr_find_sdev - Find device based on bus/target/lun.
3515 * @sdev: scsi device struct
3518 * resource entry pointer if found / NULL if not found
3520 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3522 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3523 struct ipr_resource_entry *res;
3525 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3526 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3527 (res->cfgte.res_addr.target == sdev->id) &&
3528 (res->cfgte.res_addr.lun == sdev->lun))
3536 * ipr_slave_destroy - Unconfigure a SCSI device
3537 * @sdev: scsi device struct
3542 static void ipr_slave_destroy(struct scsi_device *sdev)
3544 struct ipr_resource_entry *res;
3545 struct ipr_ioa_cfg *ioa_cfg;
3546 unsigned long lock_flags = 0;
3548 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3550 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3551 res = (struct ipr_resource_entry *) sdev->hostdata;
3554 ata_port_disable(res->sata_port->ap);
3555 sdev->hostdata = NULL;
3557 res->sata_port = NULL;
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3563 * ipr_slave_configure - Configure a SCSI device
3564 * @sdev: scsi device struct
3566 * This function configures the specified scsi device.
3571 static int ipr_slave_configure(struct scsi_device *sdev)
3573 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3574 struct ipr_resource_entry *res;
3575 unsigned long lock_flags = 0;
3577 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3578 res = sdev->hostdata;
3580 if (ipr_is_af_dasd_device(res))
3581 sdev->type = TYPE_RAID;
3582 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3583 sdev->scsi_level = 4;
3584 sdev->no_uld_attach = 1;
3586 if (ipr_is_vset_device(res)) {
3587 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3588 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3590 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3591 sdev->allow_restart = 1;
3592 if (ipr_is_gata(res) && res->sata_port) {
3593 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3594 ata_sas_slave_configure(sdev, res->sata_port->ap);
3596 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3604 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3605 * @sdev: scsi device struct
3607 * This function initializes an ATA port so that future commands
3608 * sent through queuecommand will work.
3613 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3615 struct ipr_sata_port *sata_port = NULL;
3619 if (sdev->sdev_target)
3620 sata_port = sdev->sdev_target->hostdata;
3622 rc = ata_sas_port_init(sata_port->ap);
3624 ipr_slave_destroy(sdev);
3631 * ipr_slave_alloc - Prepare for commands to a device.
3632 * @sdev: scsi device struct
3634 * This function saves a pointer to the resource entry
3635 * in the scsi device struct if the device exists. We
3636 * can then use this pointer in ipr_queuecommand when
3637 * handling new commands.
3640 * 0 on success / -ENXIO if device does not exist
3642 static int ipr_slave_alloc(struct scsi_device *sdev)
3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3645 struct ipr_resource_entry *res;
3646 unsigned long lock_flags;
3649 sdev->hostdata = NULL;
3651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3653 res = ipr_find_sdev(sdev);
3658 sdev->hostdata = res;
3659 if (!ipr_is_naca_model(res))
3660 res->needs_sync_complete = 1;
3662 if (ipr_is_gata(res)) {
3663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3664 return ipr_ata_slave_alloc(sdev);
3668 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3674 * ipr_eh_host_reset - Reset the host adapter
3675 * @scsi_cmd: scsi command struct
3680 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3682 struct ipr_ioa_cfg *ioa_cfg;
3686 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3688 dev_err(&ioa_cfg->pdev->dev,
3689 "Adapter being reset as a result of error recovery.\n");
3691 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3692 ioa_cfg->sdt_state = GET_DUMP;
3694 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3700 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3704 spin_lock_irq(cmd->device->host->host_lock);
3705 rc = __ipr_eh_host_reset(cmd);
3706 spin_unlock_irq(cmd->device->host->host_lock);
3712 * ipr_device_reset - Reset the device
3713 * @ioa_cfg: ioa config struct
3714 * @res: resource entry struct
3716 * This function issues a device reset to the affected device.
3717 * If the device is a SCSI device, a LUN reset will be sent
3718 * to the device first. If that does not work, a target reset
3719 * will be sent. If the device is a SATA device, a PHY reset will
3723 * 0 on success / non-zero on failure
3725 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3726 struct ipr_resource_entry *res)
3728 struct ipr_cmnd *ipr_cmd;
3729 struct ipr_ioarcb *ioarcb;
3730 struct ipr_cmd_pkt *cmd_pkt;
3731 struct ipr_ioarcb_ata_regs *regs;
3735 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3736 ioarcb = &ipr_cmd->ioarcb;
3737 cmd_pkt = &ioarcb->cmd_pkt;
3738 regs = &ioarcb->add_data.u.regs;
3740 ioarcb->res_handle = res->cfgte.res_handle;
3741 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3742 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3743 if (ipr_is_gata(res)) {
3744 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3745 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3746 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3749 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3750 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3751 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3752 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3753 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3754 sizeof(struct ipr_ioasa_gata));
3757 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3761 * ipr_sata_reset - Reset the SATA port
3762 * @ap: SATA port to reset
3763 * @classes: class of the attached device
3765 * This function issues a SATA phy reset to the affected ATA port.
3768 * 0 on success / non-zero on failure
3770 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3772 struct ipr_sata_port *sata_port = ap->private_data;
3773 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3774 struct ipr_resource_entry *res;
3775 unsigned long lock_flags = 0;
3779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3780 while(ioa_cfg->in_reset_reload) {
3781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3786 res = sata_port->res;
3788 rc = ipr_device_reset(ioa_cfg, res);
3789 switch(res->cfgte.proto) {
3790 case IPR_PROTO_SATA:
3791 case IPR_PROTO_SAS_STP:
3792 *classes = ATA_DEV_ATA;
3794 case IPR_PROTO_SATA_ATAPI:
3795 case IPR_PROTO_SAS_STP_ATAPI:
3796 *classes = ATA_DEV_ATAPI;
3799 *classes = ATA_DEV_UNKNOWN;
3804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3810 * ipr_eh_dev_reset - Reset the device
3811 * @scsi_cmd: scsi command struct
3813 * This function issues a device reset to the affected device.
3814 * A LUN reset will be sent to the device first. If that does
3815 * not work, a target reset will be sent.
3820 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3822 struct ipr_cmnd *ipr_cmd;
3823 struct ipr_ioa_cfg *ioa_cfg;
3824 struct ipr_resource_entry *res;
3825 struct ata_port *ap;
3829 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3830 res = scsi_cmd->device->hostdata;
3836 * If we are currently going through reset/reload, return failed. This will force the
3837 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3840 if (ioa_cfg->in_reset_reload)
3842 if (ioa_cfg->ioa_is_dead)
3845 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3846 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3847 if (ipr_cmd->scsi_cmd)
3848 ipr_cmd->done = ipr_scsi_eh_done;
3849 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3850 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3851 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3856 res->resetting_device = 1;
3857 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3859 if (ipr_is_gata(res) && res->sata_port) {
3860 ap = res->sata_port->ap;
3861 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3862 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3863 spin_lock_irq(scsi_cmd->device->host->host_lock);
3865 rc = ipr_device_reset(ioa_cfg, res);
3866 res->resetting_device = 0;
3869 return (rc ? FAILED : SUCCESS);
3872 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3876 spin_lock_irq(cmd->device->host->host_lock);
3877 rc = __ipr_eh_dev_reset(cmd);
3878 spin_unlock_irq(cmd->device->host->host_lock);
3884 * ipr_bus_reset_done - Op done function for bus reset.
3885 * @ipr_cmd: ipr command struct
3887 * This function is the op done function for a bus reset
3892 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3894 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3895 struct ipr_resource_entry *res;
3898 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3899 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3900 sizeof(res->cfgte.res_handle))) {
3901 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3907 * If abort has not completed, indicate the reset has, else call the
3908 * abort's done function to wake the sleeping eh thread
3910 if (ipr_cmd->sibling->sibling)
3911 ipr_cmd->sibling->sibling = NULL;
3913 ipr_cmd->sibling->done(ipr_cmd->sibling);
3915 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3920 * ipr_abort_timeout - An abort task has timed out
3921 * @ipr_cmd: ipr command struct
3923 * This function handles when an abort task times out. If this
3924 * happens we issue a bus reset since we have resources tied
3925 * up that must be freed before returning to the midlayer.
3930 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3932 struct ipr_cmnd *reset_cmd;
3933 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3934 struct ipr_cmd_pkt *cmd_pkt;
3935 unsigned long lock_flags = 0;
3938 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3939 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3944 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
3945 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3946 ipr_cmd->sibling = reset_cmd;
3947 reset_cmd->sibling = ipr_cmd;
3948 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3949 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3950 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3951 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3952 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3954 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3960 * ipr_cancel_op - Cancel specified op
3961 * @scsi_cmd: scsi command struct
3963 * This function cancels specified op.
3968 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3970 struct ipr_cmnd *ipr_cmd;
3971 struct ipr_ioa_cfg *ioa_cfg;
3972 struct ipr_resource_entry *res;
3973 struct ipr_cmd_pkt *cmd_pkt;
3978 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3979 res = scsi_cmd->device->hostdata;
3981 /* If we are currently going through reset/reload, return failed.
3982 * This will force the mid-layer to call ipr_eh_host_reset,
3983 * which will then go to sleep and wait for the reset to complete
3985 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3987 if (!res || !ipr_is_gscsi(res))
3990 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3991 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3992 ipr_cmd->done = ipr_scsi_eh_done;
4001 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4002 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4003 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4004 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4005 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4006 ipr_cmd->u.sdev = scsi_cmd->device;
4008 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4010 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4011 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4014 * If the abort task timed out and we sent a bus reset, we will get
4015 * one the following responses to the abort
4017 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4022 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4023 if (!ipr_is_naca_model(res))
4024 res->needs_sync_complete = 1;
4027 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4031 * ipr_eh_abort - Abort a single op
4032 * @scsi_cmd: scsi command struct
4037 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4039 unsigned long flags;
4044 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4045 rc = ipr_cancel_op(scsi_cmd);
4046 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4053 * ipr_handle_other_interrupt - Handle "other" interrupts
4054 * @ioa_cfg: ioa config struct
4055 * @int_reg: interrupt register
4058 * IRQ_NONE / IRQ_HANDLED
4060 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4061 volatile u32 int_reg)
4063 irqreturn_t rc = IRQ_HANDLED;
4065 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4066 /* Mask the interrupt */
4067 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4069 /* Clear the interrupt */
4070 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4071 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4073 list_del(&ioa_cfg->reset_cmd->queue);
4074 del_timer(&ioa_cfg->reset_cmd->timer);
4075 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4077 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4078 ioa_cfg->ioa_unit_checked = 1;
4080 dev_err(&ioa_cfg->pdev->dev,
4081 "Permanent IOA failure. 0x%08X\n", int_reg);
4083 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4084 ioa_cfg->sdt_state = GET_DUMP;
4086 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4087 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4094 * ipr_isr - Interrupt service routine
4096 * @devp: pointer to ioa config struct
4099 * IRQ_NONE / IRQ_HANDLED
4101 static irqreturn_t ipr_isr(int irq, void *devp)
4103 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4104 unsigned long lock_flags = 0;
4105 volatile u32 int_reg, int_mask_reg;
4108 struct ipr_cmnd *ipr_cmd;
4109 irqreturn_t rc = IRQ_NONE;
4111 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4113 /* If interrupts are disabled, ignore the interrupt */
4114 if (!ioa_cfg->allow_interrupts) {
4115 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4119 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4120 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4122 /* If an interrupt on the adapter did not occur, ignore it */
4123 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4124 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4131 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4132 ioa_cfg->toggle_bit) {
4134 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4135 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4137 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4138 ioa_cfg->errors_logged++;
4139 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4141 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4142 ioa_cfg->sdt_state = GET_DUMP;
4144 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4145 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4149 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4151 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4153 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4155 list_del(&ipr_cmd->queue);
4156 del_timer(&ipr_cmd->timer);
4157 ipr_cmd->done(ipr_cmd);
4161 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4162 ioa_cfg->hrrq_curr++;
4164 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4165 ioa_cfg->toggle_bit ^= 1u;
4169 if (ipr_cmd != NULL) {
4170 /* Clear the PCI interrupt */
4171 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4172 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4177 if (unlikely(rc == IRQ_NONE))
4178 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4180 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4185 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4186 * @ioa_cfg: ioa config struct
4187 * @ipr_cmd: ipr command struct
4190 * 0 on success / -1 on failure
4192 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4193 struct ipr_cmnd *ipr_cmd)
4196 struct scatterlist *sglist;
4198 u32 ioadl_flags = 0;
4199 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4200 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4201 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4203 length = scsi_cmd->request_bufflen;
4208 if (scsi_cmd->use_sg) {
4209 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4210 scsi_cmd->request_buffer,
4212 scsi_cmd->sc_data_direction);
4214 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4215 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4216 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4217 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4218 ioarcb->write_ioadl_len =
4219 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4220 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4221 ioadl_flags = IPR_IOADL_FLAGS_READ;
4222 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4223 ioarcb->read_ioadl_len =
4224 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4227 sglist = scsi_cmd->request_buffer;
4229 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4230 ioadl[i].flags_and_data_len =
4231 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4233 cpu_to_be32(sg_dma_address(&sglist[i]));
4236 if (likely(ipr_cmd->dma_use_sg)) {
4237 ioadl[i-1].flags_and_data_len |=
4238 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4241 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4243 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4244 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4245 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4246 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4247 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4248 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4249 ioadl_flags = IPR_IOADL_FLAGS_READ;
4250 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4251 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4254 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4255 scsi_cmd->request_buffer, length,
4256 scsi_cmd->sc_data_direction);
4258 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4259 ipr_cmd->dma_use_sg = 1;
4260 ioadl[0].flags_and_data_len =
4261 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4262 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4265 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4272 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4273 * @scsi_cmd: scsi command struct
4278 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4281 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4283 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4285 case MSG_SIMPLE_TAG:
4286 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4289 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4291 case MSG_ORDERED_TAG:
4292 rc = IPR_FLAGS_LO_ORDERED_TASK;
4301 * ipr_erp_done - Process completion of ERP for a device
4302 * @ipr_cmd: ipr command struct
4304 * This function copies the sense buffer into the scsi_cmd
4305 * struct and pushes the scsi_done function.
4310 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4312 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4313 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4314 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4315 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4317 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4318 scsi_cmd->result |= (DID_ERROR << 16);
4319 scmd_printk(KERN_ERR, scsi_cmd,
4320 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4322 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4323 SCSI_SENSE_BUFFERSIZE);
4327 if (!ipr_is_naca_model(res))
4328 res->needs_sync_complete = 1;
4331 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4332 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4333 scsi_cmd->scsi_done(scsi_cmd);
4337 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4338 * @ipr_cmd: ipr command struct
4343 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4345 struct ipr_ioarcb *ioarcb;
4346 struct ipr_ioasa *ioasa;
4348 ioarcb = &ipr_cmd->ioarcb;
4349 ioasa = &ipr_cmd->ioasa;
4351 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4352 ioarcb->write_data_transfer_length = 0;
4353 ioarcb->read_data_transfer_length = 0;
4354 ioarcb->write_ioadl_len = 0;
4355 ioarcb->read_ioadl_len = 0;
4357 ioasa->residual_data_len = 0;
4361 * ipr_erp_request_sense - Send request sense to a device
4362 * @ipr_cmd: ipr command struct
4364 * This function sends a request sense to a device as a result
4365 * of a check condition.
4370 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4372 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4373 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4375 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4376 ipr_erp_done(ipr_cmd);
4380 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4382 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4383 cmd_pkt->cdb[0] = REQUEST_SENSE;
4384 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4385 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4386 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4387 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4389 ipr_cmd->ioadl[0].flags_and_data_len =
4390 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4391 ipr_cmd->ioadl[0].address =
4392 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4394 ipr_cmd->ioarcb.read_ioadl_len =
4395 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4396 ipr_cmd->ioarcb.read_data_transfer_length =
4397 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4399 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4400 IPR_REQUEST_SENSE_TIMEOUT * 2);
4404 * ipr_erp_cancel_all - Send cancel all to a device
4405 * @ipr_cmd: ipr command struct
4407 * This function sends a cancel all to a device to clear the
4408 * queue. If we are running TCQ on the device, QERR is set to 1,
4409 * which means all outstanding ops have been dropped on the floor.
4410 * Cancel all will return them to us.
4415 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4417 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4418 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4419 struct ipr_cmd_pkt *cmd_pkt;
4423 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4425 if (!scsi_get_tag_type(scsi_cmd->device)) {
4426 ipr_erp_request_sense(ipr_cmd);
4430 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4431 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4432 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4434 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4435 IPR_CANCEL_ALL_TIMEOUT);
4439 * ipr_dump_ioasa - Dump contents of IOASA
4440 * @ioa_cfg: ioa config struct
4441 * @ipr_cmd: ipr command struct
4442 * @res: resource entry struct
4444 * This function is invoked by the interrupt handler when ops
4445 * fail. It will log the IOASA if appropriate. Only called
4451 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4452 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4457 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4458 __be32 *ioasa_data = (__be32 *)ioasa;
4461 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4466 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4469 error_index = ipr_get_error(ioasc);
4471 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4472 /* Don't log an error if the IOA already logged one */
4473 if (ioasa->ilid != 0)
4476 if (!ipr_is_gscsi(res))
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_gen_sense(ipr_cmd);
4641 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
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 + (ioa_cfg->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 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7120 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7121 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7122 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7123 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7124 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7125 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7126 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7128 INIT_LIST_HEAD(&ioa_cfg->free_q);
7129 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7130 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7131 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7132 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7133 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7134 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7135 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7136 ioa_cfg->sdt_state = INACTIVE;
7137 if (ipr_enable_cache)
7138 ioa_cfg->cache_state = CACHE_ENABLED;
7140 ioa_cfg->cache_state = CACHE_DISABLED;
7142 ipr_initialize_bus_attr(ioa_cfg);
7144 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7145 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7146 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7147 host->unique_id = host->host_no;
7148 host->max_cmd_len = IPR_MAX_CDB_LEN;
7149 pci_set_drvdata(pdev, ioa_cfg);
7151 p = &ioa_cfg->chip_cfg->regs;
7153 base = ioa_cfg->hdw_dma_regs;
7155 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7156 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7157 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7158 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7159 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7160 t->ioarrin_reg = base + p->ioarrin_reg;
7161 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7162 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7163 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7167 * ipr_get_chip_cfg - Find adapter chip configuration
7168 * @dev_id: PCI device id struct
7171 * ptr to chip config on success / NULL on failure
7173 static const struct ipr_chip_cfg_t * __devinit
7174 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7178 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7179 if (ipr_chip[i].vendor == dev_id->vendor &&
7180 ipr_chip[i].device == dev_id->device)
7181 return ipr_chip[i].cfg;
7186 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7187 * @pdev: PCI device struct
7188 * @dev_id: PCI device id struct
7191 * 0 on success / non-zero on failure
7193 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7194 const struct pci_device_id *dev_id)
7196 struct ipr_ioa_cfg *ioa_cfg;
7197 struct Scsi_Host *host;
7198 unsigned long ipr_regs_pci;
7199 void __iomem *ipr_regs;
7200 int rc = PCIBIOS_SUCCESSFUL;
7201 volatile u32 mask, uproc;
7205 if ((rc = pci_enable_device(pdev))) {
7206 dev_err(&pdev->dev, "Cannot enable adapter\n");
7210 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7212 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7215 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7220 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7221 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7222 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7223 sata_port_info.flags, &ipr_sata_ops);
7225 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7227 if (!ioa_cfg->chip_cfg) {
7228 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7229 dev_id->vendor, dev_id->device);
7230 goto out_scsi_host_put;
7233 if (ipr_transop_timeout)
7234 ioa_cfg->transop_timeout = ipr_transop_timeout;
7235 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7236 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7238 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7240 ipr_regs_pci = pci_resource_start(pdev, 0);
7242 rc = pci_request_regions(pdev, IPR_NAME);
7245 "Couldn't register memory range of registers\n");
7246 goto out_scsi_host_put;
7249 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7253 "Couldn't map memory range of registers\n");
7255 goto out_release_regions;
7258 ioa_cfg->hdw_dma_regs = ipr_regs;
7259 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7260 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7262 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7264 pci_set_master(pdev);
7266 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7268 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7272 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7273 ioa_cfg->chip_cfg->cache_line_size);
7275 if (rc != PCIBIOS_SUCCESSFUL) {
7276 dev_err(&pdev->dev, "Write of cache line size failed\n");
7281 /* Save away PCI config space for use following IOA reset */
7282 rc = pci_save_state(pdev);
7284 if (rc != PCIBIOS_SUCCESSFUL) {
7285 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7290 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7293 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7296 rc = ipr_alloc_mem(ioa_cfg);
7299 "Couldn't allocate enough memory for device driver!\n");
7304 * If HRRQ updated interrupt is not masked, or reset alert is set,
7305 * the card is in an unknown state and needs a hard reset
7307 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7308 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7309 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7310 ioa_cfg->needs_hard_reset = 1;
7312 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7313 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7316 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7321 spin_lock(&ipr_driver_lock);
7322 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7323 spin_unlock(&ipr_driver_lock);
7330 ipr_free_mem(ioa_cfg);
7333 out_release_regions:
7334 pci_release_regions(pdev);
7336 scsi_host_put(host);
7338 pci_disable_device(pdev);
7343 * ipr_scan_vsets - Scans for VSET devices
7344 * @ioa_cfg: ioa config struct
7346 * Description: Since the VSET resources do not follow SAM in that we can have
7347 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7352 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7356 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7357 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7358 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7362 * ipr_initiate_ioa_bringdown - Bring down an adapter
7363 * @ioa_cfg: ioa config struct
7364 * @shutdown_type: shutdown type
7366 * Description: This function will initiate bringing down the adapter.
7367 * This consists of issuing an IOA shutdown to the adapter
7368 * to flush the cache, and running BIST.
7369 * If the caller needs to wait on the completion of the reset,
7370 * the caller must sleep on the reset_wait_q.
7375 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7376 enum ipr_shutdown_type shutdown_type)
7379 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7380 ioa_cfg->sdt_state = ABORT_DUMP;
7381 ioa_cfg->reset_retries = 0;
7382 ioa_cfg->in_ioa_bringdown = 1;
7383 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7388 * __ipr_remove - Remove a single adapter
7389 * @pdev: pci device struct
7391 * Adapter hot plug remove entry point.
7396 static void __ipr_remove(struct pci_dev *pdev)
7398 unsigned long host_lock_flags = 0;
7399 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7402 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7403 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7405 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7406 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7407 flush_scheduled_work();
7408 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7410 spin_lock(&ipr_driver_lock);
7411 list_del(&ioa_cfg->queue);
7412 spin_unlock(&ipr_driver_lock);
7414 if (ioa_cfg->sdt_state == ABORT_DUMP)
7415 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7418 ipr_free_all_resources(ioa_cfg);
7424 * ipr_remove - IOA hot plug remove entry point
7425 * @pdev: pci device struct
7427 * Adapter hot plug remove entry point.
7432 static void ipr_remove(struct pci_dev *pdev)
7434 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7438 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7440 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7442 scsi_remove_host(ioa_cfg->host);
7450 * ipr_probe - Adapter hot plug add entry point
7453 * 0 on success / non-zero on failure
7455 static int __devinit ipr_probe(struct pci_dev *pdev,
7456 const struct pci_device_id *dev_id)
7458 struct ipr_ioa_cfg *ioa_cfg;
7461 rc = ipr_probe_ioa(pdev, dev_id);
7466 ioa_cfg = pci_get_drvdata(pdev);
7467 rc = ipr_probe_ioa_part2(ioa_cfg);
7474 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7481 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7485 scsi_remove_host(ioa_cfg->host);
7490 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7494 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7496 scsi_remove_host(ioa_cfg->host);
7501 scsi_scan_host(ioa_cfg->host);
7502 ipr_scan_vsets(ioa_cfg);
7503 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7504 ioa_cfg->allow_ml_add_del = 1;
7505 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7506 schedule_work(&ioa_cfg->work_q);
7511 * ipr_shutdown - Shutdown handler.
7512 * @pdev: pci device struct
7514 * This function is invoked upon system shutdown/reboot. It will issue
7515 * an adapter shutdown to the adapter to flush the write cache.
7520 static void ipr_shutdown(struct pci_dev *pdev)
7522 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7523 unsigned long lock_flags = 0;
7525 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7526 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7528 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7531 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7532 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7534 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7536 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7538 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7548 IPR_USE_LONG_TRANSOP_TIMEOUT },
7549 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7551 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7553 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7555 IPR_USE_LONG_TRANSOP_TIMEOUT },
7556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7562 IPR_USE_LONG_TRANSOP_TIMEOUT },
7563 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 },
7565 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7567 IPR_USE_LONG_TRANSOP_TIMEOUT },
7568 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7569 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7570 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7571 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7572 IPR_USE_LONG_TRANSOP_TIMEOUT },
7573 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7574 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7575 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7576 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7577 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7578 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7579 IPR_USE_LONG_TRANSOP_TIMEOUT },
7580 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7581 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7582 IPR_USE_LONG_TRANSOP_TIMEOUT },
7583 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7584 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7585 IPR_USE_LONG_TRANSOP_TIMEOUT },
7588 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7590 static struct pci_error_handlers ipr_err_handler = {
7591 .error_detected = ipr_pci_error_detected,
7592 .slot_reset = ipr_pci_slot_reset,
7595 static struct pci_driver ipr_driver = {
7597 .id_table = ipr_pci_table,
7599 .remove = ipr_remove,
7600 .shutdown = ipr_shutdown,
7601 .err_handler = &ipr_err_handler,
7605 * ipr_init - Module entry point
7608 * 0 on success / negative value on failure
7610 static int __init ipr_init(void)
7612 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7613 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7615 return pci_register_driver(&ipr_driver);
7619 * ipr_exit - Module unload
7621 * Module unload entry point.
7626 static void __exit ipr_exit(void)
7628 pci_unregister_driver(&ipr_driver);
7631 module_init(ipr_init);
7632 module_exit(ipr_exit);