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)
4456 u32 ioasc, fd_ioasc;
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;
4462 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4467 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4470 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4471 error_index = ipr_get_error(fd_ioasc);
4473 error_index = ipr_get_error(ioasc);
4475 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4476 /* Don't log an error if the IOA already logged one */
4477 if (ioasa->ilid != 0)
4480 if (!ipr_is_gscsi(res))
4483 if (ipr_error_table[error_index].log_ioasa == 0)
4487 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4489 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4490 data_len = sizeof(struct ipr_ioasa);
4492 data_len = be16_to_cpu(ioasa->ret_stat_len);
4494 ipr_err("IOASA Dump:\n");
4496 for (i = 0; i < data_len / 4; i += 4) {
4497 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4498 be32_to_cpu(ioasa_data[i]),
4499 be32_to_cpu(ioasa_data[i+1]),
4500 be32_to_cpu(ioasa_data[i+2]),
4501 be32_to_cpu(ioasa_data[i+3]));
4506 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4508 * @sense_buf: sense data buffer
4513 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4516 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4517 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4518 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4519 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4521 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4523 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4526 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4528 if (ipr_is_vset_device(res) &&
4529 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4530 ioasa->u.vset.failing_lba_hi != 0) {
4531 sense_buf[0] = 0x72;
4532 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4533 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4534 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4538 sense_buf[9] = 0x0A;
4539 sense_buf[10] = 0x80;
4541 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4543 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4544 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4545 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4546 sense_buf[15] = failing_lba & 0x000000ff;
4548 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4550 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4551 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4552 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4553 sense_buf[19] = failing_lba & 0x000000ff;
4555 sense_buf[0] = 0x70;
4556 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4557 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4558 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4560 /* Illegal request */
4561 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4562 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4563 sense_buf[7] = 10; /* additional length */
4565 /* IOARCB was in error */
4566 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4567 sense_buf[15] = 0xC0;
4568 else /* Parameter data was invalid */
4569 sense_buf[15] = 0x80;
4572 ((IPR_FIELD_POINTER_MASK &
4573 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4575 (IPR_FIELD_POINTER_MASK &
4576 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4578 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4579 if (ipr_is_vset_device(res))
4580 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4582 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4584 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4585 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4586 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4587 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4588 sense_buf[6] = failing_lba & 0x000000ff;
4591 sense_buf[7] = 6; /* additional length */
4597 * ipr_get_autosense - Copy autosense data to sense buffer
4598 * @ipr_cmd: ipr command struct
4600 * This function copies the autosense buffer to the buffer
4601 * in the scsi_cmd, if there is autosense available.
4604 * 1 if autosense was available / 0 if not
4606 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4608 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4610 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4613 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4614 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4615 SCSI_SENSE_BUFFERSIZE));
4620 * ipr_erp_start - Process an error response for a SCSI op
4621 * @ioa_cfg: ioa config struct
4622 * @ipr_cmd: ipr command struct
4624 * This function determines whether or not to initiate ERP
4625 * on the affected device.
4630 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4631 struct ipr_cmnd *ipr_cmd)
4633 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4634 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4635 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4638 ipr_scsi_eh_done(ipr_cmd);
4642 if (!ipr_is_gscsi(res))
4643 ipr_gen_sense(ipr_cmd);
4645 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4647 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4648 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4649 if (ipr_is_naca_model(res))
4650 scsi_cmd->result |= (DID_ABORT << 16);
4652 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4654 case IPR_IOASC_IR_RESOURCE_HANDLE:
4655 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4656 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4658 case IPR_IOASC_HW_SEL_TIMEOUT:
4659 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4660 if (!ipr_is_naca_model(res))
4661 res->needs_sync_complete = 1;
4663 case IPR_IOASC_SYNC_REQUIRED:
4665 res->needs_sync_complete = 1;
4666 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4668 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4669 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4670 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4672 case IPR_IOASC_BUS_WAS_RESET:
4673 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4675 * Report the bus reset and ask for a retry. The device
4676 * will give CC/UA the next command.
4678 if (!res->resetting_device)
4679 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4680 scsi_cmd->result |= (DID_ERROR << 16);
4681 if (!ipr_is_naca_model(res))
4682 res->needs_sync_complete = 1;
4684 case IPR_IOASC_HW_DEV_BUS_STATUS:
4685 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4686 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4687 if (!ipr_get_autosense(ipr_cmd)) {
4688 if (!ipr_is_naca_model(res)) {
4689 ipr_erp_cancel_all(ipr_cmd);
4694 if (!ipr_is_naca_model(res))
4695 res->needs_sync_complete = 1;
4697 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4700 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4701 scsi_cmd->result |= (DID_ERROR << 16);
4702 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4703 res->needs_sync_complete = 1;
4707 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4708 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4709 scsi_cmd->scsi_done(scsi_cmd);
4713 * ipr_scsi_done - mid-layer done function
4714 * @ipr_cmd: ipr command struct
4716 * This function is invoked by the interrupt handler for
4717 * ops generated by the SCSI mid-layer
4722 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4725 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4726 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4728 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4730 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4731 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4732 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4733 scsi_cmd->scsi_done(scsi_cmd);
4735 ipr_erp_start(ioa_cfg, ipr_cmd);
4739 * ipr_queuecommand - Queue a mid-layer request
4740 * @scsi_cmd: scsi command struct
4741 * @done: done function
4743 * This function queues a request generated by the mid-layer.
4747 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4748 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4750 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4751 void (*done) (struct scsi_cmnd *))
4753 struct ipr_ioa_cfg *ioa_cfg;
4754 struct ipr_resource_entry *res;
4755 struct ipr_ioarcb *ioarcb;
4756 struct ipr_cmnd *ipr_cmd;
4759 scsi_cmd->scsi_done = done;
4760 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4761 res = scsi_cmd->device->hostdata;
4762 scsi_cmd->result = (DID_OK << 16);
4765 * We are currently blocking all devices due to a host reset
4766 * We have told the host to stop giving us new requests, but
4767 * ERP ops don't count. FIXME
4769 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4770 return SCSI_MLQUEUE_HOST_BUSY;
4773 * FIXME - Create scsi_set_host_offline interface
4774 * and the ioa_is_dead check can be removed
4776 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4777 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4778 scsi_cmd->result = (DID_NO_CONNECT << 16);
4779 scsi_cmd->scsi_done(scsi_cmd);
4783 if (ipr_is_gata(res) && res->sata_port)
4784 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4786 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4787 ioarcb = &ipr_cmd->ioarcb;
4788 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4790 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4791 ipr_cmd->scsi_cmd = scsi_cmd;
4792 ioarcb->res_handle = res->cfgte.res_handle;
4793 ipr_cmd->done = ipr_scsi_done;
4794 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4796 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4797 if (scsi_cmd->underflow == 0)
4798 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4800 if (res->needs_sync_complete) {
4801 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4802 res->needs_sync_complete = 0;
4805 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4806 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4807 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4808 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4811 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4812 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4813 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4815 if (likely(rc == 0))
4816 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4818 if (likely(rc == 0)) {
4820 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4821 ioa_cfg->regs.ioarrin_reg);
4823 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4824 return SCSI_MLQUEUE_HOST_BUSY;
4831 * ipr_ioctl - IOCTL handler
4832 * @sdev: scsi device struct
4837 * 0 on success / other on failure
4839 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4841 struct ipr_resource_entry *res;
4843 res = (struct ipr_resource_entry *)sdev->hostdata;
4844 if (res && ipr_is_gata(res))
4845 return ata_scsi_ioctl(sdev, cmd, arg);
4851 * ipr_info - Get information about the card/driver
4852 * @scsi_host: scsi host struct
4855 * pointer to buffer with description string
4857 static const char * ipr_ioa_info(struct Scsi_Host *host)
4859 static char buffer[512];
4860 struct ipr_ioa_cfg *ioa_cfg;
4861 unsigned long lock_flags = 0;
4863 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4865 spin_lock_irqsave(host->host_lock, lock_flags);
4866 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4867 spin_unlock_irqrestore(host->host_lock, lock_flags);
4872 static struct scsi_host_template driver_template = {
4873 .module = THIS_MODULE,
4875 .info = ipr_ioa_info,
4877 .queuecommand = ipr_queuecommand,
4878 .eh_abort_handler = ipr_eh_abort,
4879 .eh_device_reset_handler = ipr_eh_dev_reset,
4880 .eh_host_reset_handler = ipr_eh_host_reset,
4881 .slave_alloc = ipr_slave_alloc,
4882 .slave_configure = ipr_slave_configure,
4883 .slave_destroy = ipr_slave_destroy,
4884 .target_alloc = ipr_target_alloc,
4885 .target_destroy = ipr_target_destroy,
4886 .change_queue_depth = ipr_change_queue_depth,
4887 .change_queue_type = ipr_change_queue_type,
4888 .bios_param = ipr_biosparam,
4889 .can_queue = IPR_MAX_COMMANDS,
4891 .sg_tablesize = IPR_MAX_SGLIST,
4892 .max_sectors = IPR_IOA_MAX_SECTORS,
4893 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4894 .use_clustering = ENABLE_CLUSTERING,
4895 .shost_attrs = ipr_ioa_attrs,
4896 .sdev_attrs = ipr_dev_attrs,
4897 .proc_name = IPR_NAME
4901 * ipr_ata_phy_reset - libata phy_reset handler
4902 * @ap: ata port to reset
4905 static void ipr_ata_phy_reset(struct ata_port *ap)
4907 unsigned long flags;
4908 struct ipr_sata_port *sata_port = ap->private_data;
4909 struct ipr_resource_entry *res = sata_port->res;
4910 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4914 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4915 while(ioa_cfg->in_reset_reload) {
4916 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4917 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4918 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4921 if (!ioa_cfg->allow_cmds)
4924 rc = ipr_device_reset(ioa_cfg, res);
4927 ap->ops->port_disable(ap);
4931 switch(res->cfgte.proto) {
4932 case IPR_PROTO_SATA:
4933 case IPR_PROTO_SAS_STP:
4934 ap->device[0].class = ATA_DEV_ATA;
4936 case IPR_PROTO_SATA_ATAPI:
4937 case IPR_PROTO_SAS_STP_ATAPI:
4938 ap->device[0].class = ATA_DEV_ATAPI;
4941 ap->device[0].class = ATA_DEV_UNKNOWN;
4942 ap->ops->port_disable(ap);
4947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4952 * ipr_ata_post_internal - Cleanup after an internal command
4953 * @qc: ATA queued command
4958 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4960 struct ipr_sata_port *sata_port = qc->ap->private_data;
4961 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4962 struct ipr_cmnd *ipr_cmd;
4963 unsigned long flags;
4965 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4966 while(ioa_cfg->in_reset_reload) {
4967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4968 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4969 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4972 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4973 if (ipr_cmd->qc == qc) {
4974 ipr_device_reset(ioa_cfg, sata_port->res);
4978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4982 * ipr_tf_read - Read the current ATA taskfile for the ATA port
4984 * @tf: destination ATA taskfile
4989 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
4991 struct ipr_sata_port *sata_port = ap->private_data;
4992 struct ipr_ioasa_gata *g = &sata_port->ioasa;
4994 tf->feature = g->error;
4995 tf->nsect = g->nsect;
4999 tf->device = g->device;
5000 tf->command = g->status;
5001 tf->hob_nsect = g->hob_nsect;
5002 tf->hob_lbal = g->hob_lbal;
5003 tf->hob_lbam = g->hob_lbam;
5004 tf->hob_lbah = g->hob_lbah;
5005 tf->ctl = g->alt_status;
5009 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5010 * @regs: destination
5011 * @tf: source ATA taskfile
5016 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5017 struct ata_taskfile *tf)
5019 regs->feature = tf->feature;
5020 regs->nsect = tf->nsect;
5021 regs->lbal = tf->lbal;
5022 regs->lbam = tf->lbam;
5023 regs->lbah = tf->lbah;
5024 regs->device = tf->device;
5025 regs->command = tf->command;
5026 regs->hob_feature = tf->hob_feature;
5027 regs->hob_nsect = tf->hob_nsect;
5028 regs->hob_lbal = tf->hob_lbal;
5029 regs->hob_lbam = tf->hob_lbam;
5030 regs->hob_lbah = tf->hob_lbah;
5031 regs->ctl = tf->ctl;
5035 * ipr_sata_done - done function for SATA commands
5036 * @ipr_cmd: ipr command struct
5038 * This function is invoked by the interrupt handler for
5039 * ops generated by the SCSI mid-layer to SATA devices
5044 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5047 struct ata_queued_cmd *qc = ipr_cmd->qc;
5048 struct ipr_sata_port *sata_port = qc->ap->private_data;
5049 struct ipr_resource_entry *res = sata_port->res;
5050 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5052 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5053 sizeof(struct ipr_ioasa_gata));
5054 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5056 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5057 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5058 res->cfgte.res_addr.target);
5060 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5061 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5063 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5064 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5065 ata_qc_complete(qc);
5069 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5070 * @ipr_cmd: ipr command struct
5071 * @qc: ATA queued command
5074 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5075 struct ata_queued_cmd *qc)
5077 u32 ioadl_flags = 0;
5078 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5079 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5080 int len = qc->nbytes + qc->pad_len;
5081 struct scatterlist *sg;
5086 if (qc->dma_dir == DMA_TO_DEVICE) {
5087 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5088 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5089 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5090 ioarcb->write_ioadl_len =
5091 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5092 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5093 ioadl_flags = IPR_IOADL_FLAGS_READ;
5094 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5095 ioarcb->read_ioadl_len =
5096 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5099 ata_for_each_sg(sg, qc) {
5100 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5101 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5102 if (ata_sg_is_last(sg, qc))
5103 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5110 * ipr_qc_issue - Issue a SATA qc to a device
5111 * @qc: queued command
5116 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5118 struct ata_port *ap = qc->ap;
5119 struct ipr_sata_port *sata_port = ap->private_data;
5120 struct ipr_resource_entry *res = sata_port->res;
5121 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5122 struct ipr_cmnd *ipr_cmd;
5123 struct ipr_ioarcb *ioarcb;
5124 struct ipr_ioarcb_ata_regs *regs;
5126 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5129 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5130 ioarcb = &ipr_cmd->ioarcb;
5131 regs = &ioarcb->add_data.u.regs;
5133 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5134 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5136 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5138 ipr_cmd->done = ipr_sata_done;
5139 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5140 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5141 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5142 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5143 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5145 ipr_build_ata_ioadl(ipr_cmd, qc);
5146 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5147 ipr_copy_sata_tf(regs, &qc->tf);
5148 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5149 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5151 switch (qc->tf.protocol) {
5152 case ATA_PROT_NODATA:
5157 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5160 case ATA_PROT_ATAPI:
5161 case ATA_PROT_ATAPI_NODATA:
5162 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5165 case ATA_PROT_ATAPI_DMA:
5166 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5167 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5176 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5177 ioa_cfg->regs.ioarrin_reg);
5182 * ipr_ata_check_status - Return last ATA status
5188 static u8 ipr_ata_check_status(struct ata_port *ap)
5190 struct ipr_sata_port *sata_port = ap->private_data;
5191 return sata_port->ioasa.status;
5195 * ipr_ata_check_altstatus - Return last ATA altstatus
5201 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5203 struct ipr_sata_port *sata_port = ap->private_data;
5204 return sata_port->ioasa.alt_status;
5207 static struct ata_port_operations ipr_sata_ops = {
5208 .port_disable = ata_port_disable,
5209 .check_status = ipr_ata_check_status,
5210 .check_altstatus = ipr_ata_check_altstatus,
5211 .dev_select = ata_noop_dev_select,
5212 .phy_reset = ipr_ata_phy_reset,
5213 .post_internal_cmd = ipr_ata_post_internal,
5214 .tf_read = ipr_tf_read,
5215 .qc_prep = ata_noop_qc_prep,
5216 .qc_issue = ipr_qc_issue,
5217 .port_start = ata_sas_port_start,
5218 .port_stop = ata_sas_port_stop
5221 static struct ata_port_info sata_port_info = {
5222 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5223 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5224 .pio_mask = 0x10, /* pio4 */
5226 .udma_mask = 0x7f, /* udma0-6 */
5227 .port_ops = &ipr_sata_ops
5230 #ifdef CONFIG_PPC_PSERIES
5231 static const u16 ipr_blocked_processors[] = {
5243 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5244 * @ioa_cfg: ioa cfg struct
5246 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5247 * certain pSeries hardware. This function determines if the given
5248 * adapter is in one of these confgurations or not.
5251 * 1 if adapter is not supported / 0 if adapter is supported
5253 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5258 if (ioa_cfg->type == 0x5702) {
5259 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5260 &rev_id) == PCIBIOS_SUCCESSFUL) {
5262 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5263 if (__is_processor(ipr_blocked_processors[i]))
5272 #define ipr_invalid_adapter(ioa_cfg) 0
5276 * ipr_ioa_bringdown_done - IOA bring down completion.
5277 * @ipr_cmd: ipr command struct
5279 * This function processes the completion of an adapter bring down.
5280 * It wakes any reset sleepers.
5285 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5287 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5290 ioa_cfg->in_reset_reload = 0;
5291 ioa_cfg->reset_retries = 0;
5292 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5293 wake_up_all(&ioa_cfg->reset_wait_q);
5295 spin_unlock_irq(ioa_cfg->host->host_lock);
5296 scsi_unblock_requests(ioa_cfg->host);
5297 spin_lock_irq(ioa_cfg->host->host_lock);
5300 return IPR_RC_JOB_RETURN;
5304 * ipr_ioa_reset_done - IOA reset completion.
5305 * @ipr_cmd: ipr command struct
5307 * This function processes the completion of an adapter reset.
5308 * It schedules any necessary mid-layer add/removes and
5309 * wakes any reset sleepers.
5314 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5316 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5317 struct ipr_resource_entry *res;
5318 struct ipr_hostrcb *hostrcb, *temp;
5322 ioa_cfg->in_reset_reload = 0;
5323 ioa_cfg->allow_cmds = 1;
5324 ioa_cfg->reset_cmd = NULL;
5325 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5327 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5328 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5333 schedule_work(&ioa_cfg->work_q);
5335 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5336 list_del(&hostrcb->queue);
5337 if (i++ < IPR_NUM_LOG_HCAMS)
5338 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5340 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5343 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5345 ioa_cfg->reset_retries = 0;
5346 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5347 wake_up_all(&ioa_cfg->reset_wait_q);
5349 spin_unlock_irq(ioa_cfg->host->host_lock);
5350 scsi_unblock_requests(ioa_cfg->host);
5351 spin_lock_irq(ioa_cfg->host->host_lock);
5353 if (!ioa_cfg->allow_cmds)
5354 scsi_block_requests(ioa_cfg->host);
5357 return IPR_RC_JOB_RETURN;
5361 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5362 * @supported_dev: supported device struct
5363 * @vpids: vendor product id struct
5368 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5369 struct ipr_std_inq_vpids *vpids)
5371 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5372 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5373 supported_dev->num_records = 1;
5374 supported_dev->data_length =
5375 cpu_to_be16(sizeof(struct ipr_supported_device));
5376 supported_dev->reserved = 0;
5380 * ipr_set_supported_devs - Send Set Supported Devices for a device
5381 * @ipr_cmd: ipr command struct
5383 * This function send a Set Supported Devices to the adapter
5386 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5388 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5390 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5391 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5392 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5393 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5394 struct ipr_resource_entry *res = ipr_cmd->u.res;
5396 ipr_cmd->job_step = ipr_ioa_reset_done;
5398 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5399 if (!ipr_is_scsi_disk(res))
5402 ipr_cmd->u.res = res;
5403 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5405 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5406 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5407 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5409 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5410 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5411 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5413 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5414 sizeof(struct ipr_supported_device));
5415 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5416 offsetof(struct ipr_misc_cbs, supp_dev));
5417 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5418 ioarcb->write_data_transfer_length =
5419 cpu_to_be32(sizeof(struct ipr_supported_device));
5421 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5422 IPR_SET_SUP_DEVICE_TIMEOUT);
5424 ipr_cmd->job_step = ipr_set_supported_devs;
5425 return IPR_RC_JOB_RETURN;
5428 return IPR_RC_JOB_CONTINUE;
5432 * ipr_setup_write_cache - Disable write cache if needed
5433 * @ipr_cmd: ipr command struct
5435 * This function sets up adapters write cache to desired setting
5438 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5440 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5444 ipr_cmd->job_step = ipr_set_supported_devs;
5445 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5446 struct ipr_resource_entry, queue);
5448 if (ioa_cfg->cache_state != CACHE_DISABLED)
5449 return IPR_RC_JOB_CONTINUE;
5451 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5452 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5453 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5454 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5456 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5458 return IPR_RC_JOB_RETURN;
5462 * ipr_get_mode_page - Locate specified mode page
5463 * @mode_pages: mode page buffer
5464 * @page_code: page code to find
5465 * @len: minimum required length for mode page
5468 * pointer to mode page / NULL on failure
5470 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5471 u32 page_code, u32 len)
5473 struct ipr_mode_page_hdr *mode_hdr;
5477 if (!mode_pages || (mode_pages->hdr.length == 0))
5480 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5481 mode_hdr = (struct ipr_mode_page_hdr *)
5482 (mode_pages->data + mode_pages->hdr.block_desc_len);
5485 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5486 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5490 page_length = (sizeof(struct ipr_mode_page_hdr) +
5491 mode_hdr->page_length);
5492 length -= page_length;
5493 mode_hdr = (struct ipr_mode_page_hdr *)
5494 ((unsigned long)mode_hdr + page_length);
5501 * ipr_check_term_power - Check for term power errors
5502 * @ioa_cfg: ioa config struct
5503 * @mode_pages: IOAFP mode pages buffer
5505 * Check the IOAFP's mode page 28 for term power errors
5510 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5511 struct ipr_mode_pages *mode_pages)
5515 struct ipr_dev_bus_entry *bus;
5516 struct ipr_mode_page28 *mode_page;
5518 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5519 sizeof(struct ipr_mode_page28));
5521 entry_length = mode_page->entry_length;
5523 bus = mode_page->bus;
5525 for (i = 0; i < mode_page->num_entries; i++) {
5526 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5527 dev_err(&ioa_cfg->pdev->dev,
5528 "Term power is absent on scsi bus %d\n",
5532 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5537 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5538 * @ioa_cfg: ioa config struct
5540 * Looks through the config table checking for SES devices. If
5541 * the SES device is in the SES table indicating a maximum SCSI
5542 * bus speed, the speed is limited for the bus.
5547 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5552 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5553 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5554 ioa_cfg->bus_attr[i].bus_width);
5556 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5557 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5562 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5563 * @ioa_cfg: ioa config struct
5564 * @mode_pages: mode page 28 buffer
5566 * Updates mode page 28 based on driver configuration
5571 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5572 struct ipr_mode_pages *mode_pages)
5574 int i, entry_length;
5575 struct ipr_dev_bus_entry *bus;
5576 struct ipr_bus_attributes *bus_attr;
5577 struct ipr_mode_page28 *mode_page;
5579 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5580 sizeof(struct ipr_mode_page28));
5582 entry_length = mode_page->entry_length;
5584 /* Loop for each device bus entry */
5585 for (i = 0, bus = mode_page->bus;
5586 i < mode_page->num_entries;
5587 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5588 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5589 dev_err(&ioa_cfg->pdev->dev,
5590 "Invalid resource address reported: 0x%08X\n",
5591 IPR_GET_PHYS_LOC(bus->res_addr));
5595 bus_attr = &ioa_cfg->bus_attr[i];
5596 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5597 bus->bus_width = bus_attr->bus_width;
5598 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5599 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5600 if (bus_attr->qas_enabled)
5601 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5603 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5608 * ipr_build_mode_select - Build a mode select command
5609 * @ipr_cmd: ipr command struct
5610 * @res_handle: resource handle to send command to
5611 * @parm: Byte 2 of Mode Sense command
5612 * @dma_addr: DMA buffer address
5613 * @xfer_len: data transfer length
5618 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5619 __be32 res_handle, u8 parm, u32 dma_addr,
5622 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5623 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5625 ioarcb->res_handle = res_handle;
5626 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5627 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5628 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5629 ioarcb->cmd_pkt.cdb[1] = parm;
5630 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5632 ioadl->flags_and_data_len =
5633 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5634 ioadl->address = cpu_to_be32(dma_addr);
5635 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5636 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5640 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5641 * @ipr_cmd: ipr command struct
5643 * This function sets up the SCSI bus attributes and sends
5644 * a Mode Select for Page 28 to activate them.
5649 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5652 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5656 ipr_scsi_bus_speed_limit(ioa_cfg);
5657 ipr_check_term_power(ioa_cfg, mode_pages);
5658 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5659 length = mode_pages->hdr.length + 1;
5660 mode_pages->hdr.length = 0;
5662 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5663 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5666 ipr_cmd->job_step = ipr_setup_write_cache;
5667 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5670 return IPR_RC_JOB_RETURN;
5674 * ipr_build_mode_sense - Builds a mode sense command
5675 * @ipr_cmd: ipr command struct
5676 * @res: resource entry struct
5677 * @parm: Byte 2 of mode sense command
5678 * @dma_addr: DMA address of mode sense buffer
5679 * @xfer_len: Size of DMA buffer
5684 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5686 u8 parm, u32 dma_addr, u8 xfer_len)
5688 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5689 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5691 ioarcb->res_handle = res_handle;
5692 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5693 ioarcb->cmd_pkt.cdb[2] = parm;
5694 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5695 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5697 ioadl->flags_and_data_len =
5698 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5699 ioadl->address = cpu_to_be32(dma_addr);
5700 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5701 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5705 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5706 * @ipr_cmd: ipr command struct
5708 * This function handles the failure of an IOA bringup command.
5713 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5715 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5716 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5718 dev_err(&ioa_cfg->pdev->dev,
5719 "0x%02X failed with IOASC: 0x%08X\n",
5720 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5722 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5724 return IPR_RC_JOB_RETURN;
5728 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5729 * @ipr_cmd: ipr command struct
5731 * This function handles the failure of a Mode Sense to the IOAFP.
5732 * Some adapters do not handle all mode pages.
5735 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5737 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5739 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5741 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5742 ipr_cmd->job_step = ipr_setup_write_cache;
5743 return IPR_RC_JOB_CONTINUE;
5746 return ipr_reset_cmd_failed(ipr_cmd);
5750 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5751 * @ipr_cmd: ipr command struct
5753 * This function send a Page 28 mode sense to the IOA to
5754 * retrieve SCSI bus attributes.
5759 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5761 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5764 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5765 0x28, ioa_cfg->vpd_cbs_dma +
5766 offsetof(struct ipr_misc_cbs, mode_pages),
5767 sizeof(struct ipr_mode_pages));
5769 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5770 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5772 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5775 return IPR_RC_JOB_RETURN;
5779 * ipr_init_res_table - Initialize the resource table
5780 * @ipr_cmd: ipr command struct
5782 * This function looks through the existing resource table, comparing
5783 * it with the config table. This function will take care of old/new
5784 * devices and schedule adding/removing them from the mid-layer
5788 * IPR_RC_JOB_CONTINUE
5790 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5792 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5793 struct ipr_resource_entry *res, *temp;
5794 struct ipr_config_table_entry *cfgte;
5799 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5800 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5802 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5803 list_move_tail(&res->queue, &old_res);
5805 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5806 cfgte = &ioa_cfg->cfg_table->dev[i];
5809 list_for_each_entry_safe(res, temp, &old_res, queue) {
5810 if (!memcmp(&res->cfgte.res_addr,
5811 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5812 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5819 if (list_empty(&ioa_cfg->free_res_q)) {
5820 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5825 res = list_entry(ioa_cfg->free_res_q.next,
5826 struct ipr_resource_entry, queue);
5827 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5828 ipr_init_res_entry(res);
5833 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5836 list_for_each_entry_safe(res, temp, &old_res, queue) {
5838 res->del_from_ml = 1;
5839 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5840 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5842 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5846 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5849 return IPR_RC_JOB_CONTINUE;
5853 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5854 * @ipr_cmd: ipr command struct
5856 * This function sends a Query IOA Configuration command
5857 * to the adapter to retrieve the IOA configuration table.
5862 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5864 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5865 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5866 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5867 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5870 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5871 ucode_vpd->major_release, ucode_vpd->card_type,
5872 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5873 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5874 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5876 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5877 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5878 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5880 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5881 ioarcb->read_data_transfer_length =
5882 cpu_to_be32(sizeof(struct ipr_config_table));
5884 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5885 ioadl->flags_and_data_len =
5886 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5888 ipr_cmd->job_step = ipr_init_res_table;
5890 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5893 return IPR_RC_JOB_RETURN;
5897 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5898 * @ipr_cmd: ipr command struct
5900 * This utility function sends an inquiry to the adapter.
5905 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5906 u32 dma_addr, u8 xfer_len)
5908 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5909 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5912 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5913 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5915 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5916 ioarcb->cmd_pkt.cdb[1] = flags;
5917 ioarcb->cmd_pkt.cdb[2] = page;
5918 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5920 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5921 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5923 ioadl->address = cpu_to_be32(dma_addr);
5924 ioadl->flags_and_data_len =
5925 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5927 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5932 * ipr_inquiry_page_supported - Is the given inquiry page supported
5933 * @page0: inquiry page 0 buffer
5936 * This function determines if the specified inquiry page is supported.
5939 * 1 if page is supported / 0 if not
5941 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5945 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5946 if (page0->page[i] == page)
5953 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5954 * @ipr_cmd: ipr command struct
5956 * This function sends a Page 3 inquiry to the adapter
5957 * to retrieve software VPD information.
5960 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5962 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5964 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5965 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5969 if (!ipr_inquiry_page_supported(page0, 1))
5970 ioa_cfg->cache_state = CACHE_NONE;
5972 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5974 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5975 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5976 sizeof(struct ipr_inquiry_page3));
5979 return IPR_RC_JOB_RETURN;
5983 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5984 * @ipr_cmd: ipr command struct
5986 * This function sends a Page 0 inquiry to the adapter
5987 * to retrieve supported inquiry pages.
5990 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5992 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5999 /* Grab the type out of the VPD and store it away */
6000 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6002 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6004 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6006 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6007 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6008 sizeof(struct ipr_inquiry_page0));
6011 return IPR_RC_JOB_RETURN;
6015 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6016 * @ipr_cmd: ipr command struct
6018 * This function sends a standard inquiry to the adapter.
6023 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6025 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6028 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6030 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6031 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6032 sizeof(struct ipr_ioa_vpd));
6035 return IPR_RC_JOB_RETURN;
6039 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6040 * @ipr_cmd: ipr command struct
6042 * This function send an Identify Host Request Response Queue
6043 * command to establish the HRRQ with the adapter.
6048 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6050 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6051 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6054 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6056 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6057 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6059 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6060 ioarcb->cmd_pkt.cdb[2] =
6061 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6062 ioarcb->cmd_pkt.cdb[3] =
6063 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6064 ioarcb->cmd_pkt.cdb[4] =
6065 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6066 ioarcb->cmd_pkt.cdb[5] =
6067 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6068 ioarcb->cmd_pkt.cdb[7] =
6069 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6070 ioarcb->cmd_pkt.cdb[8] =
6071 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6073 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6075 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6078 return IPR_RC_JOB_RETURN;
6082 * ipr_reset_timer_done - Adapter reset timer function
6083 * @ipr_cmd: ipr command struct
6085 * Description: This function is used in adapter reset processing
6086 * for timing events. If the reset_cmd pointer in the IOA
6087 * config struct is not this adapter's we are doing nested
6088 * resets and fail_all_ops will take care of freeing the
6094 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6096 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6097 unsigned long lock_flags = 0;
6099 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6101 if (ioa_cfg->reset_cmd == ipr_cmd) {
6102 list_del(&ipr_cmd->queue);
6103 ipr_cmd->done(ipr_cmd);
6106 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6110 * ipr_reset_start_timer - Start a timer for adapter reset job
6111 * @ipr_cmd: ipr command struct
6112 * @timeout: timeout value
6114 * Description: This function is used in adapter reset processing
6115 * for timing events. If the reset_cmd pointer in the IOA
6116 * config struct is not this adapter's we are doing nested
6117 * resets and fail_all_ops will take care of freeing the
6123 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6124 unsigned long timeout)
6126 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6127 ipr_cmd->done = ipr_reset_ioa_job;
6129 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6130 ipr_cmd->timer.expires = jiffies + timeout;
6131 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6132 add_timer(&ipr_cmd->timer);
6136 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6137 * @ioa_cfg: ioa cfg struct
6142 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6144 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6146 /* Initialize Host RRQ pointers */
6147 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6148 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6149 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6150 ioa_cfg->toggle_bit = 1;
6152 /* Zero out config table */
6153 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6157 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6158 * @ipr_cmd: ipr command struct
6160 * This function reinitializes some control blocks and
6161 * enables destructive diagnostics on the adapter.
6166 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6168 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6169 volatile u32 int_reg;
6172 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6173 ipr_init_ioa_mem(ioa_cfg);
6175 ioa_cfg->allow_interrupts = 1;
6176 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6178 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6179 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6180 ioa_cfg->regs.clr_interrupt_mask_reg);
6181 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6182 return IPR_RC_JOB_CONTINUE;
6185 /* Enable destructive diagnostics on IOA */
6186 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6188 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6189 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6191 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6193 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6194 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6195 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6196 ipr_cmd->done = ipr_reset_ioa_job;
6197 add_timer(&ipr_cmd->timer);
6198 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6201 return IPR_RC_JOB_RETURN;
6205 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6206 * @ipr_cmd: ipr command struct
6208 * This function is invoked when an adapter dump has run out
6209 * of processing time.
6212 * IPR_RC_JOB_CONTINUE
6214 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6216 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6218 if (ioa_cfg->sdt_state == GET_DUMP)
6219 ioa_cfg->sdt_state = ABORT_DUMP;
6221 ipr_cmd->job_step = ipr_reset_alert;
6223 return IPR_RC_JOB_CONTINUE;
6227 * ipr_unit_check_no_data - Log a unit check/no data error log
6228 * @ioa_cfg: ioa config struct
6230 * Logs an error indicating the adapter unit checked, but for some
6231 * reason, we were unable to fetch the unit check buffer.
6236 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6238 ioa_cfg->errors_logged++;
6239 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6243 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6244 * @ioa_cfg: ioa config struct
6246 * Fetches the unit check buffer from the adapter by clocking the data
6247 * through the mailbox register.
6252 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6254 unsigned long mailbox;
6255 struct ipr_hostrcb *hostrcb;
6256 struct ipr_uc_sdt sdt;
6259 mailbox = readl(ioa_cfg->ioa_mailbox);
6261 if (!ipr_sdt_is_fmt2(mailbox)) {
6262 ipr_unit_check_no_data(ioa_cfg);
6266 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6267 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6268 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6270 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6271 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6272 ipr_unit_check_no_data(ioa_cfg);
6276 /* Find length of the first sdt entry (UC buffer) */
6277 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6278 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6280 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6281 struct ipr_hostrcb, queue);
6282 list_del(&hostrcb->queue);
6283 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6285 rc = ipr_get_ldump_data_section(ioa_cfg,
6286 be32_to_cpu(sdt.entry[0].bar_str_offset),
6287 (__be32 *)&hostrcb->hcam,
6288 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6291 ipr_handle_log_data(ioa_cfg, hostrcb);
6293 ipr_unit_check_no_data(ioa_cfg);
6295 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6299 * ipr_reset_restore_cfg_space - Restore PCI config space.
6300 * @ipr_cmd: ipr command struct
6302 * Description: This function restores the saved PCI config space of
6303 * the adapter, fails all outstanding ops back to the callers, and
6304 * fetches the dump/unit check if applicable to this reset.
6307 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6309 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6311 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6315 rc = pci_restore_state(ioa_cfg->pdev);
6317 if (rc != PCIBIOS_SUCCESSFUL) {
6318 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6319 return IPR_RC_JOB_CONTINUE;
6322 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6323 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6324 return IPR_RC_JOB_CONTINUE;
6327 ipr_fail_all_ops(ioa_cfg);
6329 if (ioa_cfg->ioa_unit_checked) {
6330 ioa_cfg->ioa_unit_checked = 0;
6331 ipr_get_unit_check_buffer(ioa_cfg);
6332 ipr_cmd->job_step = ipr_reset_alert;
6333 ipr_reset_start_timer(ipr_cmd, 0);
6334 return IPR_RC_JOB_RETURN;
6337 if (ioa_cfg->in_ioa_bringdown) {
6338 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6340 ipr_cmd->job_step = ipr_reset_enable_ioa;
6342 if (GET_DUMP == ioa_cfg->sdt_state) {
6343 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6344 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6345 schedule_work(&ioa_cfg->work_q);
6346 return IPR_RC_JOB_RETURN;
6351 return IPR_RC_JOB_CONTINUE;
6355 * ipr_reset_bist_done - BIST has completed on the adapter.
6356 * @ipr_cmd: ipr command struct
6358 * Description: Unblock config space and resume the reset process.
6361 * IPR_RC_JOB_CONTINUE
6363 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6366 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6367 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6369 return IPR_RC_JOB_CONTINUE;
6373 * ipr_reset_start_bist - Run BIST on the adapter.
6374 * @ipr_cmd: ipr command struct
6376 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6379 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6381 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6383 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6387 pci_block_user_cfg_access(ioa_cfg->pdev);
6388 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6390 if (rc != PCIBIOS_SUCCESSFUL) {
6391 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6392 rc = IPR_RC_JOB_CONTINUE;
6394 ipr_cmd->job_step = ipr_reset_bist_done;
6395 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6396 rc = IPR_RC_JOB_RETURN;
6404 * ipr_reset_allowed - Query whether or not IOA can be reset
6405 * @ioa_cfg: ioa config struct
6408 * 0 if reset not allowed / non-zero if reset is allowed
6410 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6412 volatile u32 temp_reg;
6414 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6415 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6419 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6420 * @ipr_cmd: ipr command struct
6422 * Description: This function waits for adapter permission to run BIST,
6423 * then runs BIST. If the adapter does not give permission after a
6424 * reasonable time, we will reset the adapter anyway. The impact of
6425 * resetting the adapter without warning the adapter is the risk of
6426 * losing the persistent error log on the adapter. If the adapter is
6427 * reset while it is writing to the flash on the adapter, the flash
6428 * segment will have bad ECC and be zeroed.
6431 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6433 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6436 int rc = IPR_RC_JOB_RETURN;
6438 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6439 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6440 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6442 ipr_cmd->job_step = ipr_reset_start_bist;
6443 rc = IPR_RC_JOB_CONTINUE;
6450 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6451 * @ipr_cmd: ipr command struct
6453 * Description: This function alerts the adapter that it will be reset.
6454 * If memory space is not currently enabled, proceed directly
6455 * to running BIST on the adapter. The timer must always be started
6456 * so we guarantee we do not run BIST from ipr_isr.
6461 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6468 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6470 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6471 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6472 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6473 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6475 ipr_cmd->job_step = ipr_reset_start_bist;
6478 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6479 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6482 return IPR_RC_JOB_RETURN;
6486 * ipr_reset_ucode_download_done - Microcode download completion
6487 * @ipr_cmd: ipr command struct
6489 * Description: This function unmaps the microcode download buffer.
6492 * IPR_RC_JOB_CONTINUE
6494 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6496 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6497 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6499 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6500 sglist->num_sg, DMA_TO_DEVICE);
6502 ipr_cmd->job_step = ipr_reset_alert;
6503 return IPR_RC_JOB_CONTINUE;
6507 * ipr_reset_ucode_download - Download microcode to the adapter
6508 * @ipr_cmd: ipr command struct
6510 * Description: This function checks to see if it there is microcode
6511 * to download to the adapter. If there is, a download is performed.
6514 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6516 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6518 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6519 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6522 ipr_cmd->job_step = ipr_reset_alert;
6525 return IPR_RC_JOB_CONTINUE;
6527 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6528 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6529 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6530 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6531 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6532 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6533 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6535 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6536 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6538 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6539 IPR_WRITE_BUFFER_TIMEOUT);
6542 return IPR_RC_JOB_RETURN;
6546 * ipr_reset_shutdown_ioa - Shutdown the adapter
6547 * @ipr_cmd: ipr command struct
6549 * Description: This function issues an adapter shutdown of the
6550 * specified type to the specified adapter as part of the
6551 * adapter reset job.
6554 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6556 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6558 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6559 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6560 unsigned long timeout;
6561 int rc = IPR_RC_JOB_CONTINUE;
6564 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6565 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6566 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6567 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6568 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6570 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6571 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6572 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6573 timeout = IPR_INTERNAL_TIMEOUT;
6575 timeout = IPR_SHUTDOWN_TIMEOUT;
6577 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6579 rc = IPR_RC_JOB_RETURN;
6580 ipr_cmd->job_step = ipr_reset_ucode_download;
6582 ipr_cmd->job_step = ipr_reset_alert;
6589 * ipr_reset_ioa_job - Adapter reset job
6590 * @ipr_cmd: ipr command struct
6592 * Description: This function is the job router for the adapter reset job.
6597 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6600 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6603 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6605 if (ioa_cfg->reset_cmd != ipr_cmd) {
6607 * We are doing nested adapter resets and this is
6608 * not the current reset job.
6610 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6614 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6615 rc = ipr_cmd->job_step_failed(ipr_cmd);
6616 if (rc == IPR_RC_JOB_RETURN)
6620 ipr_reinit_ipr_cmnd(ipr_cmd);
6621 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6622 rc = ipr_cmd->job_step(ipr_cmd);
6623 } while(rc == IPR_RC_JOB_CONTINUE);
6627 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6628 * @ioa_cfg: ioa config struct
6629 * @job_step: first job step of reset job
6630 * @shutdown_type: shutdown type
6632 * Description: This function will initiate the reset of the given adapter
6633 * starting at the selected job step.
6634 * If the caller needs to wait on the completion of the reset,
6635 * the caller must sleep on the reset_wait_q.
6640 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6641 int (*job_step) (struct ipr_cmnd *),
6642 enum ipr_shutdown_type shutdown_type)
6644 struct ipr_cmnd *ipr_cmd;
6646 ioa_cfg->in_reset_reload = 1;
6647 ioa_cfg->allow_cmds = 0;
6648 scsi_block_requests(ioa_cfg->host);
6650 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6651 ioa_cfg->reset_cmd = ipr_cmd;
6652 ipr_cmd->job_step = job_step;
6653 ipr_cmd->u.shutdown_type = shutdown_type;
6655 ipr_reset_ioa_job(ipr_cmd);
6659 * ipr_initiate_ioa_reset - Initiate an adapter reset
6660 * @ioa_cfg: ioa config struct
6661 * @shutdown_type: shutdown type
6663 * Description: This function will initiate the reset of the given adapter.
6664 * If the caller needs to wait on the completion of the reset,
6665 * the caller must sleep on the reset_wait_q.
6670 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6671 enum ipr_shutdown_type shutdown_type)
6673 if (ioa_cfg->ioa_is_dead)
6676 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6677 ioa_cfg->sdt_state = ABORT_DUMP;
6679 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6680 dev_err(&ioa_cfg->pdev->dev,
6681 "IOA taken offline - error recovery failed\n");
6683 ioa_cfg->reset_retries = 0;
6684 ioa_cfg->ioa_is_dead = 1;
6686 if (ioa_cfg->in_ioa_bringdown) {
6687 ioa_cfg->reset_cmd = NULL;
6688 ioa_cfg->in_reset_reload = 0;
6689 ipr_fail_all_ops(ioa_cfg);
6690 wake_up_all(&ioa_cfg->reset_wait_q);
6692 spin_unlock_irq(ioa_cfg->host->host_lock);
6693 scsi_unblock_requests(ioa_cfg->host);
6694 spin_lock_irq(ioa_cfg->host->host_lock);
6697 ioa_cfg->in_ioa_bringdown = 1;
6698 shutdown_type = IPR_SHUTDOWN_NONE;
6702 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6707 * ipr_reset_freeze - Hold off all I/O activity
6708 * @ipr_cmd: ipr command struct
6710 * Description: If the PCI slot is frozen, hold off all I/O
6711 * activity; then, as soon as the slot is available again,
6712 * initiate an adapter reset.
6714 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6716 /* Disallow new interrupts, avoid loop */
6717 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6718 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6719 ipr_cmd->done = ipr_reset_ioa_job;
6720 return IPR_RC_JOB_RETURN;
6724 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6725 * @pdev: PCI device struct
6727 * Description: This routine is called to tell us that the PCI bus
6728 * is down. Can't do anything here, except put the device driver
6729 * into a holding pattern, waiting for the PCI bus to come back.
6731 static void ipr_pci_frozen(struct pci_dev *pdev)
6733 unsigned long flags = 0;
6734 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6736 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6737 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6742 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6743 * @pdev: PCI device struct
6745 * Description: This routine is called by the pci error recovery
6746 * code after the PCI slot has been reset, just before we
6747 * should resume normal operations.
6749 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6751 unsigned long flags = 0;
6752 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6754 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6755 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6757 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6758 return PCI_ERS_RESULT_RECOVERED;
6762 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6763 * @pdev: PCI device struct
6765 * Description: This routine is called when the PCI bus has
6766 * permanently failed.
6768 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6770 unsigned long flags = 0;
6771 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6773 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6774 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6775 ioa_cfg->sdt_state = ABORT_DUMP;
6776 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6777 ioa_cfg->in_ioa_bringdown = 1;
6778 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6779 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6783 * ipr_pci_error_detected - Called when a PCI error is detected.
6784 * @pdev: PCI device struct
6785 * @state: PCI channel state
6787 * Description: Called when a PCI error is detected.
6790 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6792 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6793 pci_channel_state_t state)
6796 case pci_channel_io_frozen:
6797 ipr_pci_frozen(pdev);
6798 return PCI_ERS_RESULT_NEED_RESET;
6799 case pci_channel_io_perm_failure:
6800 ipr_pci_perm_failure(pdev);
6801 return PCI_ERS_RESULT_DISCONNECT;
6806 return PCI_ERS_RESULT_NEED_RESET;
6810 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6811 * @ioa_cfg: ioa cfg struct
6813 * Description: This is the second phase of adapter intialization
6814 * This function takes care of initilizing the adapter to the point
6815 * where it can accept new commands.
6818 * 0 on sucess / -EIO on failure
6820 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6823 unsigned long host_lock_flags = 0;
6826 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6827 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
6828 if (ioa_cfg->needs_hard_reset) {
6829 ioa_cfg->needs_hard_reset = 0;
6830 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6832 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6835 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6836 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6837 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6839 if (ioa_cfg->ioa_is_dead) {
6841 } else if (ipr_invalid_adapter(ioa_cfg)) {
6845 dev_err(&ioa_cfg->pdev->dev,
6846 "Adapter not supported in this hardware configuration.\n");
6849 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6856 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6857 * @ioa_cfg: ioa config struct
6862 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6866 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6867 if (ioa_cfg->ipr_cmnd_list[i])
6868 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6869 ioa_cfg->ipr_cmnd_list[i],
6870 ioa_cfg->ipr_cmnd_list_dma[i]);
6872 ioa_cfg->ipr_cmnd_list[i] = NULL;
6875 if (ioa_cfg->ipr_cmd_pool)
6876 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6878 ioa_cfg->ipr_cmd_pool = NULL;
6882 * ipr_free_mem - Frees memory allocated for an adapter
6883 * @ioa_cfg: ioa cfg struct
6888 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6892 kfree(ioa_cfg->res_entries);
6893 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6894 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6895 ipr_free_cmd_blks(ioa_cfg);
6896 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6897 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6898 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6900 ioa_cfg->cfg_table_dma);
6902 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6903 pci_free_consistent(ioa_cfg->pdev,
6904 sizeof(struct ipr_hostrcb),
6905 ioa_cfg->hostrcb[i],
6906 ioa_cfg->hostrcb_dma[i]);
6909 ipr_free_dump(ioa_cfg);
6910 kfree(ioa_cfg->trace);
6914 * ipr_free_all_resources - Free all allocated resources for an adapter.
6915 * @ipr_cmd: ipr command struct
6917 * This function frees all allocated resources for the
6918 * specified adapter.
6923 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6925 struct pci_dev *pdev = ioa_cfg->pdev;
6928 free_irq(pdev->irq, ioa_cfg);
6929 iounmap(ioa_cfg->hdw_dma_regs);
6930 pci_release_regions(pdev);
6931 ipr_free_mem(ioa_cfg);
6932 scsi_host_put(ioa_cfg->host);
6933 pci_disable_device(pdev);
6938 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6939 * @ioa_cfg: ioa config struct
6942 * 0 on success / -ENOMEM on allocation failure
6944 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6946 struct ipr_cmnd *ipr_cmd;
6947 struct ipr_ioarcb *ioarcb;
6948 dma_addr_t dma_addr;
6951 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6952 sizeof(struct ipr_cmnd), 8, 0);
6954 if (!ioa_cfg->ipr_cmd_pool)
6957 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6958 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
6961 ipr_free_cmd_blks(ioa_cfg);
6965 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6966 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6967 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6969 ioarcb = &ipr_cmd->ioarcb;
6970 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6971 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6972 ioarcb->write_ioadl_addr =
6973 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6974 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6975 ioarcb->ioasa_host_pci_addr =
6976 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6977 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6978 ipr_cmd->cmd_index = i;
6979 ipr_cmd->ioa_cfg = ioa_cfg;
6980 ipr_cmd->sense_buffer_dma = dma_addr +
6981 offsetof(struct ipr_cmnd, sense_buffer);
6983 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6990 * ipr_alloc_mem - Allocate memory for an adapter
6991 * @ioa_cfg: ioa config struct
6994 * 0 on success / non-zero for error
6996 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6998 struct pci_dev *pdev = ioa_cfg->pdev;
6999 int i, rc = -ENOMEM;
7002 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7003 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7005 if (!ioa_cfg->res_entries)
7008 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7009 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7011 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7012 sizeof(struct ipr_misc_cbs),
7013 &ioa_cfg->vpd_cbs_dma);
7015 if (!ioa_cfg->vpd_cbs)
7016 goto out_free_res_entries;
7018 if (ipr_alloc_cmd_blks(ioa_cfg))
7019 goto out_free_vpd_cbs;
7021 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7022 sizeof(u32) * IPR_NUM_CMD_BLKS,
7023 &ioa_cfg->host_rrq_dma);
7025 if (!ioa_cfg->host_rrq)
7026 goto out_ipr_free_cmd_blocks;
7028 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7029 sizeof(struct ipr_config_table),
7030 &ioa_cfg->cfg_table_dma);
7032 if (!ioa_cfg->cfg_table)
7033 goto out_free_host_rrq;
7035 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7036 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7037 sizeof(struct ipr_hostrcb),
7038 &ioa_cfg->hostrcb_dma[i]);
7040 if (!ioa_cfg->hostrcb[i])
7041 goto out_free_hostrcb_dma;
7043 ioa_cfg->hostrcb[i]->hostrcb_dma =
7044 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7045 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7046 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7049 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7050 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7052 if (!ioa_cfg->trace)
7053 goto out_free_hostrcb_dma;
7060 out_free_hostrcb_dma:
7062 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7063 ioa_cfg->hostrcb[i],
7064 ioa_cfg->hostrcb_dma[i]);
7066 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7067 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7069 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7070 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7071 out_ipr_free_cmd_blocks:
7072 ipr_free_cmd_blks(ioa_cfg);
7074 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7075 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7076 out_free_res_entries:
7077 kfree(ioa_cfg->res_entries);
7082 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7083 * @ioa_cfg: ioa config struct
7088 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7092 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7093 ioa_cfg->bus_attr[i].bus = i;
7094 ioa_cfg->bus_attr[i].qas_enabled = 0;
7095 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7096 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7097 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7099 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7104 * ipr_init_ioa_cfg - Initialize IOA config struct
7105 * @ioa_cfg: ioa config struct
7106 * @host: scsi host struct
7107 * @pdev: PCI dev struct
7112 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7113 struct Scsi_Host *host, struct pci_dev *pdev)
7115 const struct ipr_interrupt_offsets *p;
7116 struct ipr_interrupts *t;
7119 ioa_cfg->host = host;
7120 ioa_cfg->pdev = pdev;
7121 ioa_cfg->log_level = ipr_log_level;
7122 ioa_cfg->doorbell = IPR_DOORBELL;
7123 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7124 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7125 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7126 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7127 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7128 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7129 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7130 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7132 INIT_LIST_HEAD(&ioa_cfg->free_q);
7133 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7134 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7135 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7136 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7137 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7138 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7139 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7140 ioa_cfg->sdt_state = INACTIVE;
7141 if (ipr_enable_cache)
7142 ioa_cfg->cache_state = CACHE_ENABLED;
7144 ioa_cfg->cache_state = CACHE_DISABLED;
7146 ipr_initialize_bus_attr(ioa_cfg);
7148 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7149 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7150 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7151 host->unique_id = host->host_no;
7152 host->max_cmd_len = IPR_MAX_CDB_LEN;
7153 pci_set_drvdata(pdev, ioa_cfg);
7155 p = &ioa_cfg->chip_cfg->regs;
7157 base = ioa_cfg->hdw_dma_regs;
7159 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7160 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7161 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7162 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7163 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7164 t->ioarrin_reg = base + p->ioarrin_reg;
7165 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7166 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7167 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7171 * ipr_get_chip_cfg - Find adapter chip configuration
7172 * @dev_id: PCI device id struct
7175 * ptr to chip config on success / NULL on failure
7177 static const struct ipr_chip_cfg_t * __devinit
7178 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7182 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7183 if (ipr_chip[i].vendor == dev_id->vendor &&
7184 ipr_chip[i].device == dev_id->device)
7185 return ipr_chip[i].cfg;
7190 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7191 * @pdev: PCI device struct
7192 * @dev_id: PCI device id struct
7195 * 0 on success / non-zero on failure
7197 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7198 const struct pci_device_id *dev_id)
7200 struct ipr_ioa_cfg *ioa_cfg;
7201 struct Scsi_Host *host;
7202 unsigned long ipr_regs_pci;
7203 void __iomem *ipr_regs;
7204 int rc = PCIBIOS_SUCCESSFUL;
7205 volatile u32 mask, uproc;
7209 if ((rc = pci_enable_device(pdev))) {
7210 dev_err(&pdev->dev, "Cannot enable adapter\n");
7214 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7216 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7219 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7224 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7225 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7226 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7227 sata_port_info.flags, &ipr_sata_ops);
7229 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7231 if (!ioa_cfg->chip_cfg) {
7232 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7233 dev_id->vendor, dev_id->device);
7234 goto out_scsi_host_put;
7237 if (ipr_transop_timeout)
7238 ioa_cfg->transop_timeout = ipr_transop_timeout;
7239 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7240 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7242 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7244 ipr_regs_pci = pci_resource_start(pdev, 0);
7246 rc = pci_request_regions(pdev, IPR_NAME);
7249 "Couldn't register memory range of registers\n");
7250 goto out_scsi_host_put;
7253 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7257 "Couldn't map memory range of registers\n");
7259 goto out_release_regions;
7262 ioa_cfg->hdw_dma_regs = ipr_regs;
7263 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7264 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7266 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7268 pci_set_master(pdev);
7270 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7272 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7276 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7277 ioa_cfg->chip_cfg->cache_line_size);
7279 if (rc != PCIBIOS_SUCCESSFUL) {
7280 dev_err(&pdev->dev, "Write of cache line size failed\n");
7285 /* Save away PCI config space for use following IOA reset */
7286 rc = pci_save_state(pdev);
7288 if (rc != PCIBIOS_SUCCESSFUL) {
7289 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7294 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7297 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7300 rc = ipr_alloc_mem(ioa_cfg);
7303 "Couldn't allocate enough memory for device driver!\n");
7308 * If HRRQ updated interrupt is not masked, or reset alert is set,
7309 * the card is in an unknown state and needs a hard reset
7311 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7312 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7313 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7314 ioa_cfg->needs_hard_reset = 1;
7316 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7317 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7320 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7325 spin_lock(&ipr_driver_lock);
7326 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7327 spin_unlock(&ipr_driver_lock);
7334 ipr_free_mem(ioa_cfg);
7337 out_release_regions:
7338 pci_release_regions(pdev);
7340 scsi_host_put(host);
7342 pci_disable_device(pdev);
7347 * ipr_scan_vsets - Scans for VSET devices
7348 * @ioa_cfg: ioa config struct
7350 * Description: Since the VSET resources do not follow SAM in that we can have
7351 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7356 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7360 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7361 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7362 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7366 * ipr_initiate_ioa_bringdown - Bring down an adapter
7367 * @ioa_cfg: ioa config struct
7368 * @shutdown_type: shutdown type
7370 * Description: This function will initiate bringing down the adapter.
7371 * This consists of issuing an IOA shutdown to the adapter
7372 * to flush the cache, and running BIST.
7373 * If the caller needs to wait on the completion of the reset,
7374 * the caller must sleep on the reset_wait_q.
7379 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7380 enum ipr_shutdown_type shutdown_type)
7383 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7384 ioa_cfg->sdt_state = ABORT_DUMP;
7385 ioa_cfg->reset_retries = 0;
7386 ioa_cfg->in_ioa_bringdown = 1;
7387 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7392 * __ipr_remove - Remove a single adapter
7393 * @pdev: pci device struct
7395 * Adapter hot plug remove entry point.
7400 static void __ipr_remove(struct pci_dev *pdev)
7402 unsigned long host_lock_flags = 0;
7403 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7406 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7407 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7410 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7411 flush_scheduled_work();
7412 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7414 spin_lock(&ipr_driver_lock);
7415 list_del(&ioa_cfg->queue);
7416 spin_unlock(&ipr_driver_lock);
7418 if (ioa_cfg->sdt_state == ABORT_DUMP)
7419 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7420 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7422 ipr_free_all_resources(ioa_cfg);
7428 * ipr_remove - IOA hot plug remove entry point
7429 * @pdev: pci device struct
7431 * Adapter hot plug remove entry point.
7436 static void ipr_remove(struct pci_dev *pdev)
7438 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7442 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7444 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7446 scsi_remove_host(ioa_cfg->host);
7454 * ipr_probe - Adapter hot plug add entry point
7457 * 0 on success / non-zero on failure
7459 static int __devinit ipr_probe(struct pci_dev *pdev,
7460 const struct pci_device_id *dev_id)
7462 struct ipr_ioa_cfg *ioa_cfg;
7465 rc = ipr_probe_ioa(pdev, dev_id);
7470 ioa_cfg = pci_get_drvdata(pdev);
7471 rc = ipr_probe_ioa_part2(ioa_cfg);
7478 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7485 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7489 scsi_remove_host(ioa_cfg->host);
7494 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7498 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7500 scsi_remove_host(ioa_cfg->host);
7505 scsi_scan_host(ioa_cfg->host);
7506 ipr_scan_vsets(ioa_cfg);
7507 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7508 ioa_cfg->allow_ml_add_del = 1;
7509 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7510 schedule_work(&ioa_cfg->work_q);
7515 * ipr_shutdown - Shutdown handler.
7516 * @pdev: pci device struct
7518 * This function is invoked upon system shutdown/reboot. It will issue
7519 * an adapter shutdown to the adapter to flush the write cache.
7524 static void ipr_shutdown(struct pci_dev *pdev)
7526 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7527 unsigned long lock_flags = 0;
7529 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7530 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7531 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7532 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7535 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7536 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7538 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7540 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7542 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7548 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7550 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7551 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7552 IPR_USE_LONG_TRANSOP_TIMEOUT },
7553 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7555 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7557 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7559 IPR_USE_LONG_TRANSOP_TIMEOUT },
7560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7562 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7564 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7566 IPR_USE_LONG_TRANSOP_TIMEOUT },
7567 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7568 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 },
7569 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7570 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7571 IPR_USE_LONG_TRANSOP_TIMEOUT },
7572 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7573 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7574 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7575 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7576 IPR_USE_LONG_TRANSOP_TIMEOUT },
7577 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7578 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7579 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7580 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7581 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7582 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7583 IPR_USE_LONG_TRANSOP_TIMEOUT },
7584 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7585 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7586 IPR_USE_LONG_TRANSOP_TIMEOUT },
7587 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7588 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7589 IPR_USE_LONG_TRANSOP_TIMEOUT },
7592 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7594 static struct pci_error_handlers ipr_err_handler = {
7595 .error_detected = ipr_pci_error_detected,
7596 .slot_reset = ipr_pci_slot_reset,
7599 static struct pci_driver ipr_driver = {
7601 .id_table = ipr_pci_table,
7603 .remove = ipr_remove,
7604 .shutdown = ipr_shutdown,
7605 .err_handler = &ipr_err_handler,
7609 * ipr_init - Module entry point
7612 * 0 on success / negative value on failure
7614 static int __init ipr_init(void)
7616 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7617 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7619 return pci_register_driver(&ipr_driver);
7623 * ipr_exit - Module unload
7625 * Module unload entry point.
7630 static void __exit ipr_exit(void)
7632 pci_unregister_driver(&ipr_driver);
7635 module_init(ipr_init);
7636 module_exit(ipr_exit);