2 * ipr.c -- driver for IBM Power Linux RAID adapters
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 * Copyright (C) 2003, 2004 IBM Corporation
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * This driver is used to control the following SCSI adapters:
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
50 * - Tagged command queuing
51 * - Adapter microcode download
53 * - SCSI device hot plug
57 #include <linux/config.h>
59 #include <linux/init.h>
60 #include <linux/types.h>
61 #include <linux/errno.h>
62 #include <linux/kernel.h>
63 #include <linux/ioport.h>
64 #include <linux/delay.h>
65 #include <linux/pci.h>
66 #include <linux/wait.h>
67 #include <linux/spinlock.h>
68 #include <linux/sched.h>
69 #include <linux/interrupt.h>
70 #include <linux/blkdev.h>
71 #include <linux/firmware.h>
72 #include <linux/module.h>
73 #include <linux/moduleparam.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
82 #include <scsi/scsi_request.h>
88 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90 static unsigned int ipr_max_speed = 1;
91 static int ipr_testmode = 0;
92 static unsigned int ipr_fastfail = 0;
93 static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
94 static unsigned int ipr_enable_cache = 1;
95 static unsigned int ipr_debug = 0;
96 static int ipr_auto_create = 1;
97 static DEFINE_SPINLOCK(ipr_driver_lock);
99 /* This table describes the differences between DMA controller chips */
100 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
101 { /* Gemstone and Citrine */
103 .cache_line_size = 0x20,
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
116 { /* Snipe and Scamp */
118 .cache_line_size = 0x20,
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
133 static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
137 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140 static int ipr_max_bus_speeds [] = {
141 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
145 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
146 module_param_named(max_speed, ipr_max_speed, uint, 0);
147 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
148 module_param_named(log_level, ipr_log_level, uint, 0);
149 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
150 module_param_named(testmode, ipr_testmode, int, 0);
151 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
152 module_param_named(fastfail, ipr_fastfail, int, 0);
153 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
154 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
155 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
156 module_param_named(enable_cache, ipr_enable_cache, int, 0);
157 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
158 module_param_named(debug, ipr_debug, int, 0);
159 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
160 module_param_named(auto_create, ipr_auto_create, int, 0);
161 MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
162 MODULE_LICENSE("GPL");
163 MODULE_VERSION(IPR_DRIVER_VERSION);
165 static const char *ipr_gpdd_dev_end_states[] = {
167 "Terminated by host",
168 "Terminated by device reset",
169 "Terminated by bus reset",
171 "Command not started"
174 static const char *ipr_gpdd_dev_bus_phases[] = {
188 /* A constant array of IOASCs/URCs/Error Messages */
190 struct ipr_error_table_t ipr_error_table[] = {
192 "8155: An unknown error was received"},
194 "Soft underlength error"},
196 "Command to be cancelled not found"},
198 "Qualified success"},
200 "FFFE: Soft device bus error recovered by the IOA"},
202 "FFF9: Device sector reassign successful"},
204 "FFF7: Media error recovered by device rewrite procedures"},
206 "7001: IOA sector reassignment successful"},
208 "FFF9: Soft media error. Sector reassignment recommended"},
210 "FFF7: Media error recovered by IOA rewrite procedures"},
212 "FF3D: Soft PCI bus error recovered by the IOA"},
214 "FFF6: Device hardware error recovered by the IOA"},
216 "FFF6: Device hardware error recovered by the device"},
218 "FF3D: Soft IOA error recovered by the IOA"},
220 "FFFA: Undefined device response recovered by the IOA"},
222 "FFF6: Device bus error, message or command phase"},
224 "FFF6: Failure prediction threshold exceeded"},
226 "8009: Impending cache battery pack failure"},
228 "34FF: Disk device format in progress"},
230 "Synchronization required"},
232 "No ready, IOA shutdown"},
234 "Not ready, IOA has been shutdown"},
236 "3020: Storage subsystem configuration error"},
238 "FFF5: Medium error, data unreadable, recommend reassign"},
240 "7000: Medium error, data unreadable, do not reassign"},
242 "FFF3: Disk media format bad"},
244 "3002: Addressed device failed to respond to selection"},
246 "3100: Device bus error"},
248 "3109: IOA timed out a device command"},
250 "3120: SCSI bus is not operational"},
252 "9000: IOA reserved area data check"},
254 "9001: IOA reserved area invalid data pattern"},
256 "9002: IOA reserved area LRC error"},
258 "102E: Out of alternate sectors for disk storage"},
260 "FFF4: Data transfer underlength error"},
262 "FFF4: Data transfer overlength error"},
264 "3400: Logical unit failure"},
266 "FFF4: Device microcode is corrupt"},
268 "8150: PCI bus error"},
270 "Unsupported device bus message received"},
272 "FFF4: Disk device problem"},
274 "8150: Permanent IOA failure"},
276 "3010: Disk device returned wrong response to IOA"},
278 "8151: IOA microcode error"},
280 "Device bus status error"},
282 "8157: IOA error requiring IOA reset to recover"},
284 "Message reject received from the device"},
286 "8008: A permanent cache battery pack failure occurred"},
288 "9090: Disk unit has been modified after the last known status"},
290 "9081: IOA detected device error"},
292 "9082: IOA detected device error"},
294 "3110: Device bus error, message or command phase"},
296 "9091: Incorrect hardware configuration change has been detected"},
298 "9073: Invalid multi-adapter configuration"},
300 "FFF4: Command to logical unit failed"},
302 "Illegal request, invalid request type or request packet"},
304 "Illegal request, invalid resource handle"},
306 "Illegal request, commands not allowed to this device"},
308 "Illegal request, command not allowed to a secondary adapter"},
310 "Illegal request, invalid field in parameter list"},
312 "Illegal request, parameter not supported"},
314 "Illegal request, parameter value invalid"},
316 "Illegal request, command sequence error"},
318 "Illegal request, dual adapter support not enabled"},
320 "9031: Array protection temporarily suspended, protection resuming"},
322 "9040: Array protection temporarily suspended, protection resuming"},
324 "FFFB: SCSI bus was reset"},
326 "FFFE: SCSI bus transition to single ended"},
328 "FFFE: SCSI bus transition to LVD"},
330 "FFFB: SCSI bus was reset by another initiator"},
332 "3029: A device replacement has occurred"},
334 "9051: IOA cache data exists for a missing or failed device"},
336 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
338 "9025: Disk unit is not supported at its physical location"},
340 "3020: IOA detected a SCSI bus configuration error"},
342 "3150: SCSI bus configuration error"},
344 "9074: Asymmetric advanced function disk configuration"},
346 "9041: Array protection temporarily suspended"},
348 "9042: Corrupt array parity detected on specified device"},
350 "9030: Array no longer protected due to missing or failed disk unit"},
352 "9071: Link operational transition"},
354 "9072: Link not operational transition"},
356 "9032: Array exposed but still protected"},
358 "Failure due to other device"},
360 "9008: IOA does not support functions expected by devices"},
362 "9010: Cache data associated with attached devices cannot be found"},
364 "9011: Cache data belongs to devices other than those attached"},
366 "9020: Array missing 2 or more devices with only 1 device present"},
368 "9021: Array missing 2 or more devices with 2 or more devices present"},
370 "9022: Exposed array is missing a required device"},
372 "9023: Array member(s) not at required physical locations"},
374 "9024: Array not functional due to present hardware configuration"},
376 "9026: Array not functional due to present hardware configuration"},
378 "9027: Array is missing a device and parity is out of sync"},
380 "9028: Maximum number of arrays already exist"},
382 "9050: Required cache data cannot be located for a disk unit"},
384 "9052: Cache data exists for a device that has been modified"},
386 "9054: IOA resources not available due to previous problems"},
388 "9092: Disk unit requires initialization before use"},
390 "9029: Incorrect hardware configuration change has been detected"},
392 "9060: One or more disk pairs are missing from an array"},
394 "9061: One or more disks are missing from an array"},
396 "9062: One or more disks are missing from an array"},
398 "9063: Maximum number of functional arrays has been exceeded"},
400 "Aborted command, invalid descriptor"},
402 "Command terminated by host"}
405 static const struct ipr_ses_table_entry ipr_ses_table[] = {
406 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
407 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
408 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
409 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
410 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
411 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
412 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
413 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
414 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
415 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
416 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
417 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
418 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
422 * Function Prototypes
424 static int ipr_reset_alert(struct ipr_cmnd *);
425 static void ipr_process_ccn(struct ipr_cmnd *);
426 static void ipr_process_error(struct ipr_cmnd *);
427 static void ipr_reset_ioa_job(struct ipr_cmnd *);
428 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
429 enum ipr_shutdown_type);
431 #ifdef CONFIG_SCSI_IPR_TRACE
433 * ipr_trc_hook - Add a trace entry to the driver trace
434 * @ipr_cmd: ipr command struct
436 * @add_data: additional data
441 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
442 u8 type, u32 add_data)
444 struct ipr_trace_entry *trace_entry;
445 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
447 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
448 trace_entry->time = jiffies;
449 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
450 trace_entry->type = type;
451 trace_entry->cmd_index = ipr_cmd->cmd_index;
452 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
453 trace_entry->u.add_data = add_data;
456 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
460 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
461 * @ipr_cmd: ipr command struct
466 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
468 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
469 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
471 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
472 ioarcb->write_data_transfer_length = 0;
473 ioarcb->read_data_transfer_length = 0;
474 ioarcb->write_ioadl_len = 0;
475 ioarcb->read_ioadl_len = 0;
477 ioasa->residual_data_len = 0;
479 ipr_cmd->scsi_cmd = NULL;
480 ipr_cmd->sense_buffer[0] = 0;
481 ipr_cmd->dma_use_sg = 0;
485 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
486 * @ipr_cmd: ipr command struct
491 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
493 ipr_reinit_ipr_cmnd(ipr_cmd);
494 ipr_cmd->u.scratch = 0;
495 ipr_cmd->sibling = NULL;
496 init_timer(&ipr_cmd->timer);
500 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
501 * @ioa_cfg: ioa config struct
504 * pointer to ipr command struct
507 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
509 struct ipr_cmnd *ipr_cmd;
511 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
512 list_del(&ipr_cmd->queue);
513 ipr_init_ipr_cmnd(ipr_cmd);
519 * ipr_unmap_sglist - Unmap scatterlist if mapped
520 * @ioa_cfg: ioa config struct
521 * @ipr_cmd: ipr command struct
526 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
527 struct ipr_cmnd *ipr_cmd)
529 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
531 if (ipr_cmd->dma_use_sg) {
532 if (scsi_cmd->use_sg > 0) {
533 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
535 scsi_cmd->sc_data_direction);
537 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
538 scsi_cmd->request_bufflen,
539 scsi_cmd->sc_data_direction);
545 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
546 * @ioa_cfg: ioa config struct
547 * @clr_ints: interrupts to clear
549 * This function masks all interrupts on the adapter, then clears the
550 * interrupts specified in the mask
555 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
558 volatile u32 int_reg;
560 /* Stop new interrupts */
561 ioa_cfg->allow_interrupts = 0;
563 /* Set interrupt mask to stop all new interrupts */
564 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
566 /* Clear any pending interrupts */
567 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
568 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
572 * ipr_save_pcix_cmd_reg - Save PCI-X command register
573 * @ioa_cfg: ioa config struct
576 * 0 on success / -EIO on failure
578 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582 if (pcix_cmd_reg == 0) {
583 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
587 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
588 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
589 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
593 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
598 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
599 * @ioa_cfg: ioa config struct
602 * 0 on success / -EIO on failure
604 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
606 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
609 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
610 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
611 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
615 dev_err(&ioa_cfg->pdev->dev,
616 "Failed to setup PCI-X command register\n");
624 * ipr_scsi_eh_done - mid-layer done function for aborted ops
625 * @ipr_cmd: ipr command struct
627 * This function is invoked by the interrupt handler for
628 * ops generated by the SCSI mid-layer which are being aborted.
633 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
635 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
636 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
638 scsi_cmd->result |= (DID_ERROR << 16);
640 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
641 scsi_cmd->scsi_done(scsi_cmd);
642 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
646 * ipr_fail_all_ops - Fails all outstanding ops.
647 * @ioa_cfg: ioa config struct
649 * This function fails all outstanding ops.
654 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
656 struct ipr_cmnd *ipr_cmd, *temp;
659 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
660 list_del(&ipr_cmd->queue);
662 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
663 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
665 if (ipr_cmd->scsi_cmd)
666 ipr_cmd->done = ipr_scsi_eh_done;
668 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
669 del_timer(&ipr_cmd->timer);
670 ipr_cmd->done(ipr_cmd);
677 * ipr_do_req - Send driver initiated requests.
678 * @ipr_cmd: ipr command struct
679 * @done: done function
680 * @timeout_func: timeout function
681 * @timeout: timeout value
683 * This function sends the specified command to the adapter with the
684 * timeout given. The done function is invoked on command completion.
689 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
690 void (*done) (struct ipr_cmnd *),
691 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
693 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
695 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
697 ipr_cmd->done = done;
699 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
700 ipr_cmd->timer.expires = jiffies + timeout;
701 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
703 add_timer(&ipr_cmd->timer);
705 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
708 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
709 ioa_cfg->regs.ioarrin_reg);
713 * ipr_internal_cmd_done - Op done function for an internally generated op.
714 * @ipr_cmd: ipr command struct
716 * This function is the op done function for an internally generated,
717 * blocking op. It simply wakes the sleeping thread.
722 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
724 if (ipr_cmd->sibling)
725 ipr_cmd->sibling = NULL;
727 complete(&ipr_cmd->completion);
731 * ipr_send_blocking_cmd - Send command and sleep on its completion.
732 * @ipr_cmd: ipr command struct
733 * @timeout_func: function to invoke if command times out
739 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
740 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
745 init_completion(&ipr_cmd->completion);
746 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
748 spin_unlock_irq(ioa_cfg->host->host_lock);
749 wait_for_completion(&ipr_cmd->completion);
750 spin_lock_irq(ioa_cfg->host->host_lock);
754 * ipr_send_hcam - Send an HCAM to the adapter.
755 * @ioa_cfg: ioa config struct
757 * @hostrcb: hostrcb struct
759 * This function will send a Host Controlled Async command to the adapter.
760 * If HCAMs are currently not allowed to be issued to the adapter, it will
761 * place the hostrcb on the free queue.
766 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
767 struct ipr_hostrcb *hostrcb)
769 struct ipr_cmnd *ipr_cmd;
770 struct ipr_ioarcb *ioarcb;
772 if (ioa_cfg->allow_cmds) {
773 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
775 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
777 ipr_cmd->u.hostrcb = hostrcb;
778 ioarcb = &ipr_cmd->ioarcb;
780 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
781 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
782 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
783 ioarcb->cmd_pkt.cdb[1] = type;
784 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
785 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
787 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
788 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
789 ipr_cmd->ioadl[0].flags_and_data_len =
790 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
791 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
793 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
794 ipr_cmd->done = ipr_process_ccn;
796 ipr_cmd->done = ipr_process_error;
798 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
801 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
802 ioa_cfg->regs.ioarrin_reg);
804 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
809 * ipr_init_res_entry - Initialize a resource entry struct.
810 * @res: resource entry struct
815 static void ipr_init_res_entry(struct ipr_resource_entry *res)
817 res->needs_sync_complete = 1;
820 res->del_from_ml = 0;
821 res->resetting_device = 0;
826 * ipr_handle_config_change - Handle a config change from the adapter
827 * @ioa_cfg: ioa config struct
833 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
834 struct ipr_hostrcb *hostrcb)
836 struct ipr_resource_entry *res = NULL;
837 struct ipr_config_table_entry *cfgte;
840 cfgte = &hostrcb->hcam.u.ccn.cfgte;
842 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
843 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
844 sizeof(cfgte->res_addr))) {
851 if (list_empty(&ioa_cfg->free_res_q)) {
852 ipr_send_hcam(ioa_cfg,
853 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
858 res = list_entry(ioa_cfg->free_res_q.next,
859 struct ipr_resource_entry, queue);
861 list_del(&res->queue);
862 ipr_init_res_entry(res);
863 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
866 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
868 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
870 res->sdev->hostdata = NULL;
871 res->del_from_ml = 1;
872 if (ioa_cfg->allow_ml_add_del)
873 schedule_work(&ioa_cfg->work_q);
875 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
876 } else if (!res->sdev) {
878 if (ioa_cfg->allow_ml_add_del)
879 schedule_work(&ioa_cfg->work_q);
882 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
886 * ipr_process_ccn - Op done function for a CCN.
887 * @ipr_cmd: ipr command struct
889 * This function is the op done function for a configuration
890 * change notification host controlled async from the adapter.
895 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
898 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
899 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
901 list_del(&hostrcb->queue);
902 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
905 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
906 dev_err(&ioa_cfg->pdev->dev,
907 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
909 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
911 ipr_handle_config_change(ioa_cfg, hostrcb);
916 * ipr_log_vpd - Log the passed VPD to the error log.
917 * @vpd: vendor/product id/sn struct
922 static void ipr_log_vpd(struct ipr_vpd *vpd)
924 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
925 + IPR_SERIAL_NUM_LEN];
927 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
928 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
930 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
931 ipr_err("Vendor/Product ID: %s\n", buffer);
933 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
934 buffer[IPR_SERIAL_NUM_LEN] = '\0';
935 ipr_err(" Serial Number: %s\n", buffer);
939 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
940 * @vpd: vendor/product id/sn/wwn struct
945 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
947 ipr_log_vpd(&vpd->vpd);
948 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
949 be32_to_cpu(vpd->wwid[1]));
953 * ipr_log_enhanced_cache_error - Log a cache error.
954 * @ioa_cfg: ioa config struct
955 * @hostrcb: hostrcb struct
960 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
961 struct ipr_hostrcb *hostrcb)
963 struct ipr_hostrcb_type_12_error *error =
964 &hostrcb->hcam.u.error.u.type_12_error;
966 ipr_err("-----Current Configuration-----\n");
967 ipr_err("Cache Directory Card Information:\n");
968 ipr_log_ext_vpd(&error->ioa_vpd);
969 ipr_err("Adapter Card Information:\n");
970 ipr_log_ext_vpd(&error->cfc_vpd);
972 ipr_err("-----Expected Configuration-----\n");
973 ipr_err("Cache Directory Card Information:\n");
974 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
975 ipr_err("Adapter Card Information:\n");
976 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
978 ipr_err("Additional IOA Data: %08X %08X %08X\n",
979 be32_to_cpu(error->ioa_data[0]),
980 be32_to_cpu(error->ioa_data[1]),
981 be32_to_cpu(error->ioa_data[2]));
985 * ipr_log_cache_error - Log a cache error.
986 * @ioa_cfg: ioa config struct
987 * @hostrcb: hostrcb struct
992 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
993 struct ipr_hostrcb *hostrcb)
995 struct ipr_hostrcb_type_02_error *error =
996 &hostrcb->hcam.u.error.u.type_02_error;
998 ipr_err("-----Current Configuration-----\n");
999 ipr_err("Cache Directory Card Information:\n");
1000 ipr_log_vpd(&error->ioa_vpd);
1001 ipr_err("Adapter Card Information:\n");
1002 ipr_log_vpd(&error->cfc_vpd);
1004 ipr_err("-----Expected Configuration-----\n");
1005 ipr_err("Cache Directory Card Information:\n");
1006 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1007 ipr_err("Adapter Card Information:\n");
1008 ipr_log_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_enhanced_config_error - Log a configuration error.
1018 * @ioa_cfg: ioa config struct
1019 * @hostrcb: hostrcb struct
1024 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1025 struct ipr_hostrcb *hostrcb)
1027 int errors_logged, i;
1028 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1029 struct ipr_hostrcb_type_13_error *error;
1031 error = &hostrcb->hcam.u.error.u.type_13_error;
1032 errors_logged = be32_to_cpu(error->errors_logged);
1034 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1035 be32_to_cpu(error->errors_detected), errors_logged);
1037 dev_entry = error->dev;
1039 for (i = 0; i < errors_logged; i++, dev_entry++) {
1042 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1043 ipr_log_ext_vpd(&dev_entry->vpd);
1045 ipr_err("-----New Device Information-----\n");
1046 ipr_log_ext_vpd(&dev_entry->new_vpd);
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1051 ipr_err("Adapter Card Information:\n");
1052 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1057 * ipr_log_config_error - Log a configuration error.
1058 * @ioa_cfg: ioa config struct
1059 * @hostrcb: hostrcb struct
1064 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1065 struct ipr_hostrcb *hostrcb)
1067 int errors_logged, i;
1068 struct ipr_hostrcb_device_data_entry *dev_entry;
1069 struct ipr_hostrcb_type_03_error *error;
1071 error = &hostrcb->hcam.u.error.u.type_03_error;
1072 errors_logged = be32_to_cpu(error->errors_logged);
1074 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1075 be32_to_cpu(error->errors_detected), errors_logged);
1077 dev_entry = error->dev;
1079 for (i = 0; i < errors_logged; i++, dev_entry++) {
1082 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1083 ipr_log_vpd(&dev_entry->vpd);
1085 ipr_err("-----New Device Information-----\n");
1086 ipr_log_vpd(&dev_entry->new_vpd);
1088 ipr_err("Cache Directory Card Information:\n");
1089 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1091 ipr_err("Adapter Card Information:\n");
1092 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1094 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1095 be32_to_cpu(dev_entry->ioa_data[0]),
1096 be32_to_cpu(dev_entry->ioa_data[1]),
1097 be32_to_cpu(dev_entry->ioa_data[2]),
1098 be32_to_cpu(dev_entry->ioa_data[3]),
1099 be32_to_cpu(dev_entry->ioa_data[4]));
1104 * ipr_log_enhanced_array_error - Log an array configuration error.
1105 * @ioa_cfg: ioa config struct
1106 * @hostrcb: hostrcb struct
1111 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1112 struct ipr_hostrcb *hostrcb)
1115 struct ipr_hostrcb_type_14_error *error;
1116 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1117 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1119 error = &hostrcb->hcam.u.error.u.type_14_error;
1123 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1124 error->protection_level,
1125 ioa_cfg->host->host_no,
1126 error->last_func_vset_res_addr.bus,
1127 error->last_func_vset_res_addr.target,
1128 error->last_func_vset_res_addr.lun);
1132 array_entry = error->array_member;
1133 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1134 sizeof(error->array_member));
1136 for (i = 0; i < num_entries; i++, array_entry++) {
1137 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1140 if (be32_to_cpu(error->exposed_mode_adn) == i)
1141 ipr_err("Exposed Array Member %d:\n", i);
1143 ipr_err("Array Member %d:\n", i);
1145 ipr_log_ext_vpd(&array_entry->vpd);
1146 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1147 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1148 "Expected Location");
1155 * ipr_log_array_error - Log an array configuration error.
1156 * @ioa_cfg: ioa config struct
1157 * @hostrcb: hostrcb struct
1162 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1163 struct ipr_hostrcb *hostrcb)
1166 struct ipr_hostrcb_type_04_error *error;
1167 struct ipr_hostrcb_array_data_entry *array_entry;
1168 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1170 error = &hostrcb->hcam.u.error.u.type_04_error;
1174 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1175 error->protection_level,
1176 ioa_cfg->host->host_no,
1177 error->last_func_vset_res_addr.bus,
1178 error->last_func_vset_res_addr.target,
1179 error->last_func_vset_res_addr.lun);
1183 array_entry = error->array_member;
1185 for (i = 0; i < 18; i++) {
1186 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1189 if (be32_to_cpu(error->exposed_mode_adn) == i)
1190 ipr_err("Exposed Array Member %d:\n", i);
1192 ipr_err("Array Member %d:\n", i);
1194 ipr_log_vpd(&array_entry->vpd);
1196 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1197 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1198 "Expected Location");
1203 array_entry = error->array_member2;
1210 * ipr_log_hex_data - Log additional hex IOA error data.
1211 * @data: IOA error data
1217 static void ipr_log_hex_data(u32 *data, int len)
1224 for (i = 0; i < len / 4; i += 4) {
1225 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1226 be32_to_cpu(data[i]),
1227 be32_to_cpu(data[i+1]),
1228 be32_to_cpu(data[i+2]),
1229 be32_to_cpu(data[i+3]));
1234 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1235 * @ioa_cfg: ioa config struct
1236 * @hostrcb: hostrcb struct
1241 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1242 struct ipr_hostrcb *hostrcb)
1244 struct ipr_hostrcb_type_17_error *error;
1246 error = &hostrcb->hcam.u.error.u.type_17_error;
1247 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1249 ipr_err("%s\n", error->failure_reason);
1250 ipr_err("Remote Adapter VPD:\n");
1251 ipr_log_ext_vpd(&error->vpd);
1252 ipr_log_hex_data(error->data,
1253 be32_to_cpu(hostrcb->hcam.length) -
1254 (offsetof(struct ipr_hostrcb_error, u) +
1255 offsetof(struct ipr_hostrcb_type_17_error, data)));
1259 * ipr_log_dual_ioa_error - Log a dual adapter error.
1260 * @ioa_cfg: ioa config struct
1261 * @hostrcb: hostrcb struct
1266 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1267 struct ipr_hostrcb *hostrcb)
1269 struct ipr_hostrcb_type_07_error *error;
1271 error = &hostrcb->hcam.u.error.u.type_07_error;
1272 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1274 ipr_err("%s\n", error->failure_reason);
1275 ipr_err("Remote Adapter VPD:\n");
1276 ipr_log_vpd(&error->vpd);
1277 ipr_log_hex_data(error->data,
1278 be32_to_cpu(hostrcb->hcam.length) -
1279 (offsetof(struct ipr_hostrcb_error, u) +
1280 offsetof(struct ipr_hostrcb_type_07_error, data)));
1284 * ipr_log_generic_error - Log an adapter error.
1285 * @ioa_cfg: ioa config struct
1286 * @hostrcb: hostrcb struct
1291 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1292 struct ipr_hostrcb *hostrcb)
1294 ipr_log_hex_data(hostrcb->hcam.u.raw.data,
1295 be32_to_cpu(hostrcb->hcam.length));
1299 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1302 * This function will return the index of into the ipr_error_table
1303 * for the specified IOASC. If the IOASC is not in the table,
1304 * 0 will be returned, which points to the entry used for unknown errors.
1307 * index into the ipr_error_table
1309 static u32 ipr_get_error(u32 ioasc)
1313 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1314 if (ipr_error_table[i].ioasc == ioasc)
1321 * ipr_handle_log_data - Log an adapter error.
1322 * @ioa_cfg: ioa config struct
1323 * @hostrcb: hostrcb struct
1325 * This function logs an adapter error to the system.
1330 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1331 struct ipr_hostrcb *hostrcb)
1336 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1339 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1340 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1342 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1344 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1345 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1346 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1347 scsi_report_bus_reset(ioa_cfg->host,
1348 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1351 error_index = ipr_get_error(ioasc);
1353 if (!ipr_error_table[error_index].log_hcam)
1356 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1357 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1358 "%s\n", ipr_error_table[error_index].error);
1360 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1361 ipr_error_table[error_index].error);
1364 /* Set indication we have logged an error */
1365 ioa_cfg->errors_logged++;
1367 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1369 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1370 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1372 switch (hostrcb->hcam.overlay_id) {
1373 case IPR_HOST_RCB_OVERLAY_ID_2:
1374 ipr_log_cache_error(ioa_cfg, hostrcb);
1376 case IPR_HOST_RCB_OVERLAY_ID_3:
1377 ipr_log_config_error(ioa_cfg, hostrcb);
1379 case IPR_HOST_RCB_OVERLAY_ID_4:
1380 case IPR_HOST_RCB_OVERLAY_ID_6:
1381 ipr_log_array_error(ioa_cfg, hostrcb);
1383 case IPR_HOST_RCB_OVERLAY_ID_7:
1384 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1386 case IPR_HOST_RCB_OVERLAY_ID_12:
1387 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1389 case IPR_HOST_RCB_OVERLAY_ID_13:
1390 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1392 case IPR_HOST_RCB_OVERLAY_ID_14:
1393 case IPR_HOST_RCB_OVERLAY_ID_16:
1394 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1396 case IPR_HOST_RCB_OVERLAY_ID_17:
1397 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1399 case IPR_HOST_RCB_OVERLAY_ID_1:
1400 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1402 ipr_log_generic_error(ioa_cfg, hostrcb);
1408 * ipr_process_error - Op done function for an adapter error log.
1409 * @ipr_cmd: ipr command struct
1411 * This function is the op done function for an error log host
1412 * controlled async from the adapter. It will log the error and
1413 * send the HCAM back to the adapter.
1418 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1421 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1422 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1424 list_del(&hostrcb->queue);
1425 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1428 ipr_handle_log_data(ioa_cfg, hostrcb);
1429 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1430 dev_err(&ioa_cfg->pdev->dev,
1431 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1434 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1438 * ipr_timeout - An internally generated op has timed out.
1439 * @ipr_cmd: ipr command struct
1441 * This function blocks host requests and initiates an
1447 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1449 unsigned long lock_flags = 0;
1450 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1453 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1455 ioa_cfg->errors_logged++;
1456 dev_err(&ioa_cfg->pdev->dev,
1457 "Adapter being reset due to command timeout.\n");
1459 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1460 ioa_cfg->sdt_state = GET_DUMP;
1462 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1463 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1470 * ipr_oper_timeout - Adapter timed out transitioning to operational
1471 * @ipr_cmd: ipr command struct
1473 * This function blocks host requests and initiates an
1479 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1481 unsigned long lock_flags = 0;
1482 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1485 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1487 ioa_cfg->errors_logged++;
1488 dev_err(&ioa_cfg->pdev->dev,
1489 "Adapter timed out transitioning to operational.\n");
1491 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1492 ioa_cfg->sdt_state = GET_DUMP;
1494 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1496 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1497 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1500 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1505 * ipr_reset_reload - Reset/Reload the IOA
1506 * @ioa_cfg: ioa config struct
1507 * @shutdown_type: shutdown type
1509 * This function resets the adapter and re-initializes it.
1510 * This function assumes that all new host commands have been stopped.
1514 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1515 enum ipr_shutdown_type shutdown_type)
1517 if (!ioa_cfg->in_reset_reload)
1518 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1520 spin_unlock_irq(ioa_cfg->host->host_lock);
1521 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1522 spin_lock_irq(ioa_cfg->host->host_lock);
1524 /* If we got hit with a host reset while we were already resetting
1525 the adapter for some reason, and the reset failed. */
1526 if (ioa_cfg->ioa_is_dead) {
1535 * ipr_find_ses_entry - Find matching SES in SES table
1536 * @res: resource entry struct of SES
1539 * pointer to SES table entry / NULL on failure
1541 static const struct ipr_ses_table_entry *
1542 ipr_find_ses_entry(struct ipr_resource_entry *res)
1545 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1547 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1548 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1549 if (ste->compare_product_id_byte[j] == 'X') {
1550 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1558 if (matches == IPR_PROD_ID_LEN)
1566 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1567 * @ioa_cfg: ioa config struct
1569 * @bus_width: bus width
1572 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1573 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1574 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1575 * max 160MHz = max 320MB/sec).
1577 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1579 struct ipr_resource_entry *res;
1580 const struct ipr_ses_table_entry *ste;
1581 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1583 /* Loop through each config table entry in the config table buffer */
1584 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1585 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1588 if (bus != res->cfgte.res_addr.bus)
1591 if (!(ste = ipr_find_ses_entry(res)))
1594 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1597 return max_xfer_rate;
1601 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1602 * @ioa_cfg: ioa config struct
1603 * @max_delay: max delay in micro-seconds to wait
1605 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1608 * 0 on success / other on failure
1610 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1612 volatile u32 pcii_reg;
1615 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1616 while (delay < max_delay) {
1617 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1619 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1622 /* udelay cannot be used if delay is more than a few milliseconds */
1623 if ((delay / 1000) > MAX_UDELAY_MS)
1624 mdelay(delay / 1000);
1634 * ipr_get_ldump_data_section - Dump IOA memory
1635 * @ioa_cfg: ioa config struct
1636 * @start_addr: adapter address to dump
1637 * @dest: destination kernel buffer
1638 * @length_in_words: length to dump in 4 byte words
1641 * 0 on success / -EIO on failure
1643 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1645 __be32 *dest, u32 length_in_words)
1647 volatile u32 temp_pcii_reg;
1650 /* Write IOA interrupt reg starting LDUMP state */
1651 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1652 ioa_cfg->regs.set_uproc_interrupt_reg);
1654 /* Wait for IO debug acknowledge */
1655 if (ipr_wait_iodbg_ack(ioa_cfg,
1656 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1657 dev_err(&ioa_cfg->pdev->dev,
1658 "IOA dump long data transfer timeout\n");
1662 /* Signal LDUMP interlocked - clear IO debug ack */
1663 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1664 ioa_cfg->regs.clr_interrupt_reg);
1666 /* Write Mailbox with starting address */
1667 writel(start_addr, ioa_cfg->ioa_mailbox);
1669 /* Signal address valid - clear IOA Reset alert */
1670 writel(IPR_UPROCI_RESET_ALERT,
1671 ioa_cfg->regs.clr_uproc_interrupt_reg);
1673 for (i = 0; i < length_in_words; i++) {
1674 /* Wait for IO debug acknowledge */
1675 if (ipr_wait_iodbg_ack(ioa_cfg,
1676 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1677 dev_err(&ioa_cfg->pdev->dev,
1678 "IOA dump short data transfer timeout\n");
1682 /* Read data from mailbox and increment destination pointer */
1683 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1686 /* For all but the last word of data, signal data received */
1687 if (i < (length_in_words - 1)) {
1688 /* Signal dump data received - Clear IO debug Ack */
1689 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1690 ioa_cfg->regs.clr_interrupt_reg);
1694 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1695 writel(IPR_UPROCI_RESET_ALERT,
1696 ioa_cfg->regs.set_uproc_interrupt_reg);
1698 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1699 ioa_cfg->regs.clr_uproc_interrupt_reg);
1701 /* Signal dump data received - Clear IO debug Ack */
1702 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1703 ioa_cfg->regs.clr_interrupt_reg);
1705 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1706 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1708 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1710 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1720 #ifdef CONFIG_SCSI_IPR_DUMP
1722 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1723 * @ioa_cfg: ioa config struct
1724 * @pci_address: adapter address
1725 * @length: length of data to copy
1727 * Copy data from PCI adapter to kernel buffer.
1728 * Note: length MUST be a 4 byte multiple
1730 * 0 on success / other on failure
1732 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1733 unsigned long pci_address, u32 length)
1735 int bytes_copied = 0;
1736 int cur_len, rc, rem_len, rem_page_len;
1738 unsigned long lock_flags = 0;
1739 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1741 while (bytes_copied < length &&
1742 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1743 if (ioa_dump->page_offset >= PAGE_SIZE ||
1744 ioa_dump->page_offset == 0) {
1745 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1749 return bytes_copied;
1752 ioa_dump->page_offset = 0;
1753 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1754 ioa_dump->next_page_index++;
1756 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1758 rem_len = length - bytes_copied;
1759 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1760 cur_len = min(rem_len, rem_page_len);
1762 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1763 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1766 rc = ipr_get_ldump_data_section(ioa_cfg,
1767 pci_address + bytes_copied,
1768 &page[ioa_dump->page_offset / 4],
1769 (cur_len / sizeof(u32)));
1771 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774 ioa_dump->page_offset += cur_len;
1775 bytes_copied += cur_len;
1783 return bytes_copied;
1787 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1788 * @hdr: dump entry header struct
1793 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1795 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1797 hdr->offset = sizeof(*hdr);
1798 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1802 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1803 * @ioa_cfg: ioa config struct
1804 * @driver_dump: driver dump struct
1809 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1810 struct ipr_driver_dump *driver_dump)
1812 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1814 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1815 driver_dump->ioa_type_entry.hdr.len =
1816 sizeof(struct ipr_dump_ioa_type_entry) -
1817 sizeof(struct ipr_dump_entry_header);
1818 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1819 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1820 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1821 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1822 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1823 ucode_vpd->minor_release[1];
1824 driver_dump->hdr.num_entries++;
1828 * ipr_dump_version_data - Fill in the driver version in the dump.
1829 * @ioa_cfg: ioa config struct
1830 * @driver_dump: driver dump struct
1835 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1836 struct ipr_driver_dump *driver_dump)
1838 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1839 driver_dump->version_entry.hdr.len =
1840 sizeof(struct ipr_dump_version_entry) -
1841 sizeof(struct ipr_dump_entry_header);
1842 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1843 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1844 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1845 driver_dump->hdr.num_entries++;
1849 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1850 * @ioa_cfg: ioa config struct
1851 * @driver_dump: driver dump struct
1856 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1857 struct ipr_driver_dump *driver_dump)
1859 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1860 driver_dump->trace_entry.hdr.len =
1861 sizeof(struct ipr_dump_trace_entry) -
1862 sizeof(struct ipr_dump_entry_header);
1863 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1864 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1865 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1866 driver_dump->hdr.num_entries++;
1870 * ipr_dump_location_data - Fill in the IOA location in the dump.
1871 * @ioa_cfg: ioa config struct
1872 * @driver_dump: driver dump struct
1877 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1878 struct ipr_driver_dump *driver_dump)
1880 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1881 driver_dump->location_entry.hdr.len =
1882 sizeof(struct ipr_dump_location_entry) -
1883 sizeof(struct ipr_dump_entry_header);
1884 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1885 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1886 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1887 driver_dump->hdr.num_entries++;
1891 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1892 * @ioa_cfg: ioa config struct
1893 * @dump: dump struct
1898 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1900 unsigned long start_addr, sdt_word;
1901 unsigned long lock_flags = 0;
1902 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1903 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1904 u32 num_entries, start_off, end_off;
1905 u32 bytes_to_copy, bytes_copied, rc;
1906 struct ipr_sdt *sdt;
1911 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1913 if (ioa_cfg->sdt_state != GET_DUMP) {
1914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1918 start_addr = readl(ioa_cfg->ioa_mailbox);
1920 if (!ipr_sdt_is_fmt2(start_addr)) {
1921 dev_err(&ioa_cfg->pdev->dev,
1922 "Invalid dump table format: %lx\n", start_addr);
1923 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1927 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1929 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1931 /* Initialize the overall dump header */
1932 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1933 driver_dump->hdr.num_entries = 1;
1934 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1935 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1936 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1937 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1939 ipr_dump_version_data(ioa_cfg, driver_dump);
1940 ipr_dump_location_data(ioa_cfg, driver_dump);
1941 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1942 ipr_dump_trace_data(ioa_cfg, driver_dump);
1944 /* Update dump_header */
1945 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1947 /* IOA Dump entry */
1948 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1949 ioa_dump->format = IPR_SDT_FMT2;
1950 ioa_dump->hdr.len = 0;
1951 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1952 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1954 /* First entries in sdt are actually a list of dump addresses and
1955 lengths to gather the real dump data. sdt represents the pointer
1956 to the ioa generated dump table. Dump data will be extracted based
1957 on entries in this table */
1958 sdt = &ioa_dump->sdt;
1960 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1961 sizeof(struct ipr_sdt) / sizeof(__be32));
1963 /* Smart Dump table is ready to use and the first entry is valid */
1964 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1965 dev_err(&ioa_cfg->pdev->dev,
1966 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1967 rc, be32_to_cpu(sdt->hdr.state));
1968 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1969 ioa_cfg->sdt_state = DUMP_OBTAINED;
1970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1974 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1976 if (num_entries > IPR_NUM_SDT_ENTRIES)
1977 num_entries = IPR_NUM_SDT_ENTRIES;
1979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1981 for (i = 0; i < num_entries; i++) {
1982 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1983 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1987 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1988 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1989 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1990 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1992 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1993 bytes_to_copy = end_off - start_off;
1994 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1995 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1999 /* Copy data from adapter to driver buffers */
2000 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2003 ioa_dump->hdr.len += bytes_copied;
2005 if (bytes_copied != bytes_to_copy) {
2006 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2013 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2015 /* Update dump_header */
2016 driver_dump->hdr.len += ioa_dump->hdr.len;
2018 ioa_cfg->sdt_state = DUMP_OBTAINED;
2023 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2027 * ipr_release_dump - Free adapter dump memory
2028 * @kref: kref struct
2033 static void ipr_release_dump(struct kref *kref)
2035 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2036 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2037 unsigned long lock_flags = 0;
2041 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2042 ioa_cfg->dump = NULL;
2043 ioa_cfg->sdt_state = INACTIVE;
2044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2046 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2047 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2054 * ipr_worker_thread - Worker thread
2055 * @data: ioa config struct
2057 * Called at task level from a work thread. This function takes care
2058 * of adding and removing device from the mid-layer as configuration
2059 * changes are detected by the adapter.
2064 static void ipr_worker_thread(void *data)
2066 unsigned long lock_flags;
2067 struct ipr_resource_entry *res;
2068 struct scsi_device *sdev;
2069 struct ipr_dump *dump;
2070 struct ipr_ioa_cfg *ioa_cfg = data;
2071 u8 bus, target, lun;
2075 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2077 if (ioa_cfg->sdt_state == GET_DUMP) {
2078 dump = ioa_cfg->dump;
2080 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2083 kref_get(&dump->kref);
2084 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2085 ipr_get_ioa_dump(ioa_cfg, dump);
2086 kref_put(&dump->kref, ipr_release_dump);
2088 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2089 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2090 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2091 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2098 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2099 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2103 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2104 if (res->del_from_ml && res->sdev) {
2107 if (!scsi_device_get(sdev)) {
2109 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2110 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2111 scsi_remove_device(sdev);
2112 scsi_device_put(sdev);
2113 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2120 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2121 if (res->add_to_ml) {
2122 bus = res->cfgte.res_addr.bus;
2123 target = res->cfgte.res_addr.target;
2124 lun = res->cfgte.res_addr.lun;
2125 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2126 scsi_add_device(ioa_cfg->host, bus, target, lun);
2127 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2133 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
2137 #ifdef CONFIG_SCSI_IPR_TRACE
2139 * ipr_read_trace - Dump the adapter trace
2140 * @kobj: kobject struct
2143 * @count: buffer size
2146 * number of bytes printed to buffer
2148 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2149 loff_t off, size_t count)
2151 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2152 struct Scsi_Host *shost = class_to_shost(cdev);
2153 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2154 unsigned long lock_flags = 0;
2155 int size = IPR_TRACE_SIZE;
2156 char *src = (char *)ioa_cfg->trace;
2160 if (off + count > size) {
2165 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2166 memcpy(buf, &src[off], count);
2167 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2171 static struct bin_attribute ipr_trace_attr = {
2177 .read = ipr_read_trace,
2181 static const struct {
2182 enum ipr_cache_state state;
2184 } cache_state [] = {
2185 { CACHE_NONE, "none" },
2186 { CACHE_DISABLED, "disabled" },
2187 { CACHE_ENABLED, "enabled" }
2191 * ipr_show_write_caching - Show the write caching attribute
2192 * @class_dev: class device struct
2196 * number of bytes printed to buffer
2198 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2200 struct Scsi_Host *shost = class_to_shost(class_dev);
2201 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2202 unsigned long lock_flags = 0;
2205 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2206 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2207 if (cache_state[i].state == ioa_cfg->cache_state) {
2208 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2212 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2218 * ipr_store_write_caching - Enable/disable adapter write cache
2219 * @class_dev: class_device struct
2221 * @count: buffer size
2223 * This function will enable/disable adapter write cache.
2226 * count on success / other on failure
2228 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2229 const char *buf, size_t count)
2231 struct Scsi_Host *shost = class_to_shost(class_dev);
2232 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2233 unsigned long lock_flags = 0;
2234 enum ipr_cache_state new_state = CACHE_INVALID;
2237 if (!capable(CAP_SYS_ADMIN))
2239 if (ioa_cfg->cache_state == CACHE_NONE)
2242 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2243 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2244 new_state = cache_state[i].state;
2249 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2252 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2253 if (ioa_cfg->cache_state == new_state) {
2254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2258 ioa_cfg->cache_state = new_state;
2259 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2260 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2261 if (!ioa_cfg->in_reset_reload)
2262 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2263 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2264 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2269 static struct class_device_attribute ipr_ioa_cache_attr = {
2271 .name = "write_cache",
2272 .mode = S_IRUGO | S_IWUSR,
2274 .show = ipr_show_write_caching,
2275 .store = ipr_store_write_caching
2279 * ipr_show_fw_version - Show the firmware version
2280 * @class_dev: class device struct
2284 * number of bytes printed to buffer
2286 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2288 struct Scsi_Host *shost = class_to_shost(class_dev);
2289 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2290 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2291 unsigned long lock_flags = 0;
2294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2295 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2296 ucode_vpd->major_release, ucode_vpd->card_type,
2297 ucode_vpd->minor_release[0],
2298 ucode_vpd->minor_release[1]);
2299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2303 static struct class_device_attribute ipr_fw_version_attr = {
2305 .name = "fw_version",
2308 .show = ipr_show_fw_version,
2312 * ipr_show_log_level - Show the adapter's error logging level
2313 * @class_dev: class device struct
2317 * number of bytes printed to buffer
2319 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2321 struct Scsi_Host *shost = class_to_shost(class_dev);
2322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2323 unsigned long lock_flags = 0;
2326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2327 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2328 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2333 * ipr_store_log_level - Change the adapter's error logging level
2334 * @class_dev: class device struct
2338 * number of bytes printed to buffer
2340 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2341 const char *buf, size_t count)
2343 struct Scsi_Host *shost = class_to_shost(class_dev);
2344 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2345 unsigned long lock_flags = 0;
2347 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2348 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2353 static struct class_device_attribute ipr_log_level_attr = {
2355 .name = "log_level",
2356 .mode = S_IRUGO | S_IWUSR,
2358 .show = ipr_show_log_level,
2359 .store = ipr_store_log_level
2363 * ipr_store_diagnostics - IOA Diagnostics interface
2364 * @class_dev: class_device struct
2366 * @count: buffer size
2368 * This function will reset the adapter and wait a reasonable
2369 * amount of time for any errors that the adapter might log.
2372 * count on success / other on failure
2374 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2375 const char *buf, size_t count)
2377 struct Scsi_Host *shost = class_to_shost(class_dev);
2378 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2379 unsigned long lock_flags = 0;
2382 if (!capable(CAP_SYS_ADMIN))
2385 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2386 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2387 ioa_cfg->errors_logged = 0;
2388 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2390 if (ioa_cfg->in_reset_reload) {
2391 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2392 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2394 /* Wait for a second for any errors to be logged */
2397 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2402 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2404 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2409 static struct class_device_attribute ipr_diagnostics_attr = {
2411 .name = "run_diagnostics",
2414 .store = ipr_store_diagnostics
2418 * ipr_show_adapter_state - Show the adapter's state
2419 * @class_dev: class device struct
2423 * number of bytes printed to buffer
2425 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2427 struct Scsi_Host *shost = class_to_shost(class_dev);
2428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2429 unsigned long lock_flags = 0;
2432 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2433 if (ioa_cfg->ioa_is_dead)
2434 len = snprintf(buf, PAGE_SIZE, "offline\n");
2436 len = snprintf(buf, PAGE_SIZE, "online\n");
2437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2442 * ipr_store_adapter_state - Change adapter state
2443 * @class_dev: class_device struct
2445 * @count: buffer size
2447 * This function will change the adapter's state.
2450 * count on success / other on failure
2452 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2453 const char *buf, size_t count)
2455 struct Scsi_Host *shost = class_to_shost(class_dev);
2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2457 unsigned long lock_flags;
2460 if (!capable(CAP_SYS_ADMIN))
2463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2464 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2465 ioa_cfg->ioa_is_dead = 0;
2466 ioa_cfg->reset_retries = 0;
2467 ioa_cfg->in_ioa_bringdown = 0;
2468 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2476 static struct class_device_attribute ipr_ioa_state_attr = {
2479 .mode = S_IRUGO | S_IWUSR,
2481 .show = ipr_show_adapter_state,
2482 .store = ipr_store_adapter_state
2486 * ipr_store_reset_adapter - Reset the adapter
2487 * @class_dev: class_device struct
2489 * @count: buffer size
2491 * This function will reset the adapter.
2494 * count on success / other on failure
2496 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2497 const char *buf, size_t count)
2499 struct Scsi_Host *shost = class_to_shost(class_dev);
2500 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2501 unsigned long lock_flags;
2504 if (!capable(CAP_SYS_ADMIN))
2507 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
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_reset_attr = {
2518 .name = "reset_host",
2521 .store = ipr_store_reset_adapter
2525 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2526 * @buf_len: buffer length
2528 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2529 * list to use for microcode download
2532 * pointer to sglist / NULL on failure
2534 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2536 int sg_size, order, bsize_elem, num_elem, i, j;
2537 struct ipr_sglist *sglist;
2538 struct scatterlist *scatterlist;
2541 /* Get the minimum size per scatter/gather element */
2542 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2544 /* Get the actual size per element */
2545 order = get_order(sg_size);
2547 /* Determine the actual number of bytes per element */
2548 bsize_elem = PAGE_SIZE * (1 << order);
2550 /* Determine the actual number of sg entries needed */
2551 if (buf_len % bsize_elem)
2552 num_elem = (buf_len / bsize_elem) + 1;
2554 num_elem = buf_len / bsize_elem;
2556 /* Allocate a scatter/gather list for the DMA */
2557 sglist = kzalloc(sizeof(struct ipr_sglist) +
2558 (sizeof(struct scatterlist) * (num_elem - 1)),
2561 if (sglist == NULL) {
2566 scatterlist = sglist->scatterlist;
2568 sglist->order = order;
2569 sglist->num_sg = num_elem;
2571 /* Allocate a bunch of sg elements */
2572 for (i = 0; i < num_elem; i++) {
2573 page = alloc_pages(GFP_KERNEL, order);
2577 /* Free up what we already allocated */
2578 for (j = i - 1; j >= 0; j--)
2579 __free_pages(scatterlist[j].page, order);
2584 scatterlist[i].page = page;
2591 * ipr_free_ucode_buffer - Frees a microcode download buffer
2592 * @p_dnld: scatter/gather list pointer
2594 * Free a DMA'able ucode download buffer previously allocated with
2595 * ipr_alloc_ucode_buffer
2600 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2604 for (i = 0; i < sglist->num_sg; i++)
2605 __free_pages(sglist->scatterlist[i].page, sglist->order);
2611 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2612 * @sglist: scatter/gather list pointer
2613 * @buffer: buffer pointer
2614 * @len: buffer length
2616 * Copy a microcode image from a user buffer into a buffer allocated by
2617 * ipr_alloc_ucode_buffer
2620 * 0 on success / other on failure
2622 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2623 u8 *buffer, u32 len)
2625 int bsize_elem, i, result = 0;
2626 struct scatterlist *scatterlist;
2629 /* Determine the actual number of bytes per element */
2630 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2632 scatterlist = sglist->scatterlist;
2634 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2635 kaddr = kmap(scatterlist[i].page);
2636 memcpy(kaddr, buffer, bsize_elem);
2637 kunmap(scatterlist[i].page);
2639 scatterlist[i].length = bsize_elem;
2647 if (len % bsize_elem) {
2648 kaddr = kmap(scatterlist[i].page);
2649 memcpy(kaddr, buffer, len % bsize_elem);
2650 kunmap(scatterlist[i].page);
2652 scatterlist[i].length = len % bsize_elem;
2655 sglist->buffer_len = len;
2660 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2661 * @ipr_cmd: ipr command struct
2662 * @sglist: scatter/gather list
2664 * Builds a microcode download IOA data list (IOADL).
2667 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2668 struct ipr_sglist *sglist)
2670 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2671 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2672 struct scatterlist *scatterlist = sglist->scatterlist;
2675 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2676 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2677 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2678 ioarcb->write_ioadl_len =
2679 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2681 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2682 ioadl[i].flags_and_data_len =
2683 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2685 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2688 ioadl[i-1].flags_and_data_len |=
2689 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2693 * ipr_update_ioa_ucode - Update IOA's microcode
2694 * @ioa_cfg: ioa config struct
2695 * @sglist: scatter/gather list
2697 * Initiate an adapter reset to update the IOA's microcode
2700 * 0 on success / -EIO on failure
2702 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2703 struct ipr_sglist *sglist)
2705 unsigned long lock_flags;
2707 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2709 if (ioa_cfg->ucode_sglist) {
2710 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2711 dev_err(&ioa_cfg->pdev->dev,
2712 "Microcode download already in progress\n");
2716 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2717 sglist->num_sg, DMA_TO_DEVICE);
2719 if (!sglist->num_dma_sg) {
2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2721 dev_err(&ioa_cfg->pdev->dev,
2722 "Failed to map microcode download buffer!\n");
2726 ioa_cfg->ucode_sglist = sglist;
2727 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2728 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2729 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2732 ioa_cfg->ucode_sglist = NULL;
2733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2738 * ipr_store_update_fw - Update the firmware on the adapter
2739 * @class_dev: class_device struct
2741 * @count: buffer size
2743 * This function will update the firmware on the adapter.
2746 * count on success / other on failure
2748 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2749 const char *buf, size_t count)
2751 struct Scsi_Host *shost = class_to_shost(class_dev);
2752 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2753 struct ipr_ucode_image_header *image_hdr;
2754 const struct firmware *fw_entry;
2755 struct ipr_sglist *sglist;
2758 int len, result, dnld_size;
2760 if (!capable(CAP_SYS_ADMIN))
2763 len = snprintf(fname, 99, "%s", buf);
2764 fname[len-1] = '\0';
2766 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2767 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2771 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2773 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2774 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2775 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2776 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2777 release_firmware(fw_entry);
2781 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2782 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2783 sglist = ipr_alloc_ucode_buffer(dnld_size);
2786 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2787 release_firmware(fw_entry);
2791 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2794 dev_err(&ioa_cfg->pdev->dev,
2795 "Microcode buffer copy to DMA buffer failed\n");
2799 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
2804 ipr_free_ucode_buffer(sglist);
2805 release_firmware(fw_entry);
2809 static struct class_device_attribute ipr_update_fw_attr = {
2811 .name = "update_fw",
2814 .store = ipr_store_update_fw
2817 static struct class_device_attribute *ipr_ioa_attrs[] = {
2818 &ipr_fw_version_attr,
2819 &ipr_log_level_attr,
2820 &ipr_diagnostics_attr,
2821 &ipr_ioa_state_attr,
2822 &ipr_ioa_reset_attr,
2823 &ipr_update_fw_attr,
2824 &ipr_ioa_cache_attr,
2828 #ifdef CONFIG_SCSI_IPR_DUMP
2830 * ipr_read_dump - Dump the adapter
2831 * @kobj: kobject struct
2834 * @count: buffer size
2837 * number of bytes printed to buffer
2839 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2840 loff_t off, size_t count)
2842 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2843 struct Scsi_Host *shost = class_to_shost(cdev);
2844 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2845 struct ipr_dump *dump;
2846 unsigned long lock_flags = 0;
2851 if (!capable(CAP_SYS_ADMIN))
2854 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2855 dump = ioa_cfg->dump;
2857 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2858 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2861 kref_get(&dump->kref);
2862 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2864 if (off > dump->driver_dump.hdr.len) {
2865 kref_put(&dump->kref, ipr_release_dump);
2869 if (off + count > dump->driver_dump.hdr.len) {
2870 count = dump->driver_dump.hdr.len - off;
2874 if (count && off < sizeof(dump->driver_dump)) {
2875 if (off + count > sizeof(dump->driver_dump))
2876 len = sizeof(dump->driver_dump) - off;
2879 src = (u8 *)&dump->driver_dump + off;
2880 memcpy(buf, src, len);
2886 off -= sizeof(dump->driver_dump);
2888 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2889 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2890 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2893 src = (u8 *)&dump->ioa_dump + off;
2894 memcpy(buf, src, len);
2900 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2903 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2904 len = PAGE_ALIGN(off) - off;
2907 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2908 src += off & ~PAGE_MASK;
2909 memcpy(buf, src, len);
2915 kref_put(&dump->kref, ipr_release_dump);
2920 * ipr_alloc_dump - Prepare for adapter dump
2921 * @ioa_cfg: ioa config struct
2924 * 0 on success / other on failure
2926 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2928 struct ipr_dump *dump;
2929 unsigned long lock_flags = 0;
2932 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2935 ipr_err("Dump memory allocation failed\n");
2939 kref_init(&dump->kref);
2940 dump->ioa_cfg = ioa_cfg;
2942 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2944 if (INACTIVE != ioa_cfg->sdt_state) {
2945 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2950 ioa_cfg->dump = dump;
2951 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2952 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2953 ioa_cfg->dump_taken = 1;
2954 schedule_work(&ioa_cfg->work_q);
2956 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2963 * ipr_free_dump - Free adapter dump memory
2964 * @ioa_cfg: ioa config struct
2967 * 0 on success / other on failure
2969 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2971 struct ipr_dump *dump;
2972 unsigned long lock_flags = 0;
2976 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2977 dump = ioa_cfg->dump;
2979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2983 ioa_cfg->dump = NULL;
2984 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2986 kref_put(&dump->kref, ipr_release_dump);
2993 * ipr_write_dump - Setup dump state of adapter
2994 * @kobj: kobject struct
2997 * @count: buffer size
3000 * number of bytes printed to buffer
3002 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3003 loff_t off, size_t count)
3005 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3006 struct Scsi_Host *shost = class_to_shost(cdev);
3007 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3010 if (!capable(CAP_SYS_ADMIN))
3014 rc = ipr_alloc_dump(ioa_cfg);
3015 else if (buf[0] == '0')
3016 rc = ipr_free_dump(ioa_cfg);
3026 static struct bin_attribute ipr_dump_attr = {
3029 .mode = S_IRUSR | S_IWUSR,
3032 .read = ipr_read_dump,
3033 .write = ipr_write_dump
3036 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3040 * ipr_change_queue_depth - Change the device's queue depth
3041 * @sdev: scsi device struct
3042 * @qdepth: depth to set
3047 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3049 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3050 return sdev->queue_depth;
3054 * ipr_change_queue_type - Change the device's queue type
3055 * @dsev: scsi device struct
3056 * @tag_type: type of tags to use
3059 * actual queue type set
3061 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3063 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3064 struct ipr_resource_entry *res;
3065 unsigned long lock_flags = 0;
3067 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3068 res = (struct ipr_resource_entry *)sdev->hostdata;
3071 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3073 * We don't bother quiescing the device here since the
3074 * adapter firmware does it for us.
3076 scsi_set_tag_type(sdev, tag_type);
3079 scsi_activate_tcq(sdev, sdev->queue_depth);
3081 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3087 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3092 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3093 * @dev: device struct
3097 * number of bytes printed to buffer
3099 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3101 struct scsi_device *sdev = to_scsi_device(dev);
3102 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3103 struct ipr_resource_entry *res;
3104 unsigned long lock_flags = 0;
3105 ssize_t len = -ENXIO;
3107 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3108 res = (struct ipr_resource_entry *)sdev->hostdata;
3110 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3115 static struct device_attribute ipr_adapter_handle_attr = {
3117 .name = "adapter_handle",
3120 .show = ipr_show_adapter_handle
3123 static struct device_attribute *ipr_dev_attrs[] = {
3124 &ipr_adapter_handle_attr,
3129 * ipr_biosparam - Return the HSC mapping
3130 * @sdev: scsi device struct
3131 * @block_device: block device pointer
3132 * @capacity: capacity of the device
3133 * @parm: Array containing returned HSC values.
3135 * This function generates the HSC parms that fdisk uses.
3136 * We want to make sure we return something that places partitions
3137 * on 4k boundaries for best performance with the IOA.
3142 static int ipr_biosparam(struct scsi_device *sdev,
3143 struct block_device *block_device,
3144 sector_t capacity, int *parm)
3152 cylinders = capacity;
3153 sector_div(cylinders, (128 * 32));
3158 parm[2] = cylinders;
3164 * ipr_slave_destroy - Unconfigure a SCSI device
3165 * @sdev: scsi device struct
3170 static void ipr_slave_destroy(struct scsi_device *sdev)
3172 struct ipr_resource_entry *res;
3173 struct ipr_ioa_cfg *ioa_cfg;
3174 unsigned long lock_flags = 0;
3176 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3178 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3179 res = (struct ipr_resource_entry *) sdev->hostdata;
3181 sdev->hostdata = NULL;
3184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3188 * ipr_slave_configure - Configure a SCSI device
3189 * @sdev: scsi device struct
3191 * This function configures the specified scsi device.
3196 static int ipr_slave_configure(struct scsi_device *sdev)
3198 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3199 struct ipr_resource_entry *res;
3200 unsigned long lock_flags = 0;
3202 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3203 res = sdev->hostdata;
3205 if (ipr_is_af_dasd_device(res))
3206 sdev->type = TYPE_RAID;
3207 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3208 sdev->scsi_level = 4;
3209 sdev->no_uld_attach = 1;
3211 if (ipr_is_vset_device(res)) {
3212 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3213 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3215 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
3216 sdev->allow_restart = 1;
3217 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3224 * ipr_slave_alloc - Prepare for commands to a device.
3225 * @sdev: scsi device struct
3227 * This function saves a pointer to the resource entry
3228 * in the scsi device struct if the device exists. We
3229 * can then use this pointer in ipr_queuecommand when
3230 * handling new commands.
3233 * 0 on success / -ENXIO if device does not exist
3235 static int ipr_slave_alloc(struct scsi_device *sdev)
3237 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3238 struct ipr_resource_entry *res;
3239 unsigned long lock_flags;
3242 sdev->hostdata = NULL;
3244 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3246 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3247 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3248 (res->cfgte.res_addr.target == sdev->id) &&
3249 (res->cfgte.res_addr.lun == sdev->lun)) {
3253 sdev->hostdata = res;
3254 res->needs_sync_complete = 1;
3260 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3266 * ipr_eh_host_reset - Reset the host adapter
3267 * @scsi_cmd: scsi command struct
3272 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3274 struct ipr_ioa_cfg *ioa_cfg;
3278 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3280 dev_err(&ioa_cfg->pdev->dev,
3281 "Adapter being reset as a result of error recovery.\n");
3283 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3284 ioa_cfg->sdt_state = GET_DUMP;
3286 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3292 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3296 spin_lock_irq(cmd->device->host->host_lock);
3297 rc = __ipr_eh_host_reset(cmd);
3298 spin_unlock_irq(cmd->device->host->host_lock);
3304 * ipr_eh_dev_reset - Reset the device
3305 * @scsi_cmd: scsi command struct
3307 * This function issues a device reset to the affected device.
3308 * A LUN reset will be sent to the device first. If that does
3309 * not work, a target reset will be sent.
3314 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3316 struct ipr_cmnd *ipr_cmd;
3317 struct ipr_ioa_cfg *ioa_cfg;
3318 struct ipr_resource_entry *res;
3319 struct ipr_cmd_pkt *cmd_pkt;
3323 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3324 res = scsi_cmd->device->hostdata;
3326 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3330 * If we are currently going through reset/reload, return failed. This will force the
3331 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3334 if (ioa_cfg->in_reset_reload)
3336 if (ioa_cfg->ioa_is_dead)
3339 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3340 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3341 if (ipr_cmd->scsi_cmd)
3342 ipr_cmd->done = ipr_scsi_eh_done;
3346 res->resetting_device = 1;
3348 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3350 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3351 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3352 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3353 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3355 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
3356 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3358 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3360 res->resetting_device = 0;
3362 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3365 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3368 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3372 spin_lock_irq(cmd->device->host->host_lock);
3373 rc = __ipr_eh_dev_reset(cmd);
3374 spin_unlock_irq(cmd->device->host->host_lock);
3380 * ipr_bus_reset_done - Op done function for bus reset.
3381 * @ipr_cmd: ipr command struct
3383 * This function is the op done function for a bus reset
3388 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3390 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3391 struct ipr_resource_entry *res;
3394 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3395 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3396 sizeof(res->cfgte.res_handle))) {
3397 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3403 * If abort has not completed, indicate the reset has, else call the
3404 * abort's done function to wake the sleeping eh thread
3406 if (ipr_cmd->sibling->sibling)
3407 ipr_cmd->sibling->sibling = NULL;
3409 ipr_cmd->sibling->done(ipr_cmd->sibling);
3411 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3416 * ipr_abort_timeout - An abort task has timed out
3417 * @ipr_cmd: ipr command struct
3419 * This function handles when an abort task times out. If this
3420 * happens we issue a bus reset since we have resources tied
3421 * up that must be freed before returning to the midlayer.
3426 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3428 struct ipr_cmnd *reset_cmd;
3429 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3430 struct ipr_cmd_pkt *cmd_pkt;
3431 unsigned long lock_flags = 0;
3434 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3435 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3440 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3441 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3442 ipr_cmd->sibling = reset_cmd;
3443 reset_cmd->sibling = ipr_cmd;
3444 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3445 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3446 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3447 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3448 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3450 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3456 * ipr_cancel_op - Cancel specified op
3457 * @scsi_cmd: scsi command struct
3459 * This function cancels specified op.
3464 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3466 struct ipr_cmnd *ipr_cmd;
3467 struct ipr_ioa_cfg *ioa_cfg;
3468 struct ipr_resource_entry *res;
3469 struct ipr_cmd_pkt *cmd_pkt;
3474 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3475 res = scsi_cmd->device->hostdata;
3477 /* If we are currently going through reset/reload, return failed.
3478 * This will force the mid-layer to call ipr_eh_host_reset,
3479 * which will then go to sleep and wait for the reset to complete
3481 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3483 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3486 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3487 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3488 ipr_cmd->done = ipr_scsi_eh_done;
3497 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3498 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3499 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3500 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3501 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3502 ipr_cmd->u.sdev = scsi_cmd->device;
3504 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3505 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3506 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3509 * If the abort task timed out and we sent a bus reset, we will get
3510 * one the following responses to the abort
3512 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3517 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3518 res->needs_sync_complete = 1;
3521 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3525 * ipr_eh_abort - Abort a single op
3526 * @scsi_cmd: scsi command struct
3531 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3533 unsigned long flags;
3538 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3539 rc = ipr_cancel_op(scsi_cmd);
3540 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
3547 * ipr_handle_other_interrupt - Handle "other" interrupts
3548 * @ioa_cfg: ioa config struct
3549 * @int_reg: interrupt register
3552 * IRQ_NONE / IRQ_HANDLED
3554 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3555 volatile u32 int_reg)
3557 irqreturn_t rc = IRQ_HANDLED;
3559 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3560 /* Mask the interrupt */
3561 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3563 /* Clear the interrupt */
3564 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3565 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3567 list_del(&ioa_cfg->reset_cmd->queue);
3568 del_timer(&ioa_cfg->reset_cmd->timer);
3569 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3571 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3572 ioa_cfg->ioa_unit_checked = 1;
3574 dev_err(&ioa_cfg->pdev->dev,
3575 "Permanent IOA failure. 0x%08X\n", int_reg);
3577 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3578 ioa_cfg->sdt_state = GET_DUMP;
3580 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3581 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3588 * ipr_isr - Interrupt service routine
3590 * @devp: pointer to ioa config struct
3591 * @regs: pt_regs struct
3594 * IRQ_NONE / IRQ_HANDLED
3596 static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3598 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3599 unsigned long lock_flags = 0;
3600 volatile u32 int_reg, int_mask_reg;
3603 struct ipr_cmnd *ipr_cmd;
3604 irqreturn_t rc = IRQ_NONE;
3606 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3608 /* If interrupts are disabled, ignore the interrupt */
3609 if (!ioa_cfg->allow_interrupts) {
3610 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3614 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3615 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3617 /* If an interrupt on the adapter did not occur, ignore it */
3618 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3619 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3626 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3627 ioa_cfg->toggle_bit) {
3629 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3630 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3632 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3633 ioa_cfg->errors_logged++;
3634 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3636 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3637 ioa_cfg->sdt_state = GET_DUMP;
3639 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3640 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3644 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3646 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3648 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3650 list_del(&ipr_cmd->queue);
3651 del_timer(&ipr_cmd->timer);
3652 ipr_cmd->done(ipr_cmd);
3656 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3657 ioa_cfg->hrrq_curr++;
3659 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3660 ioa_cfg->toggle_bit ^= 1u;
3664 if (ipr_cmd != NULL) {
3665 /* Clear the PCI interrupt */
3666 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3667 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3672 if (unlikely(rc == IRQ_NONE))
3673 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3680 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3681 * @ioa_cfg: ioa config struct
3682 * @ipr_cmd: ipr command struct
3685 * 0 on success / -1 on failure
3687 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3688 struct ipr_cmnd *ipr_cmd)
3691 struct scatterlist *sglist;
3693 u32 ioadl_flags = 0;
3694 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3695 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3696 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3698 length = scsi_cmd->request_bufflen;
3703 if (scsi_cmd->use_sg) {
3704 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3705 scsi_cmd->request_buffer,
3707 scsi_cmd->sc_data_direction);
3709 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3710 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3711 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3712 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3713 ioarcb->write_ioadl_len =
3714 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3715 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3716 ioadl_flags = IPR_IOADL_FLAGS_READ;
3717 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3718 ioarcb->read_ioadl_len =
3719 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3722 sglist = scsi_cmd->request_buffer;
3724 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3725 ioadl[i].flags_and_data_len =
3726 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3728 cpu_to_be32(sg_dma_address(&sglist[i]));
3731 if (likely(ipr_cmd->dma_use_sg)) {
3732 ioadl[i-1].flags_and_data_len |=
3733 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3736 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3738 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3739 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3740 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3741 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3742 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3743 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3744 ioadl_flags = IPR_IOADL_FLAGS_READ;
3745 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3746 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3749 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3750 scsi_cmd->request_buffer, length,
3751 scsi_cmd->sc_data_direction);
3753 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3754 ipr_cmd->dma_use_sg = 1;
3755 ioadl[0].flags_and_data_len =
3756 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3757 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3760 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3767 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3768 * @scsi_cmd: scsi command struct
3773 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3776 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3778 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3780 case MSG_SIMPLE_TAG:
3781 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3784 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3786 case MSG_ORDERED_TAG:
3787 rc = IPR_FLAGS_LO_ORDERED_TASK;
3796 * ipr_erp_done - Process completion of ERP for a device
3797 * @ipr_cmd: ipr command struct
3799 * This function copies the sense buffer into the scsi_cmd
3800 * struct and pushes the scsi_done function.
3805 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3807 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3808 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3809 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3810 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3812 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3813 scsi_cmd->result |= (DID_ERROR << 16);
3814 ipr_sdev_err(scsi_cmd->device,
3815 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3817 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3818 SCSI_SENSE_BUFFERSIZE);
3822 res->needs_sync_complete = 1;
3825 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3826 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3827 scsi_cmd->scsi_done(scsi_cmd);
3831 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3832 * @ipr_cmd: ipr command struct
3837 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3839 struct ipr_ioarcb *ioarcb;
3840 struct ipr_ioasa *ioasa;
3842 ioarcb = &ipr_cmd->ioarcb;
3843 ioasa = &ipr_cmd->ioasa;
3845 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3846 ioarcb->write_data_transfer_length = 0;
3847 ioarcb->read_data_transfer_length = 0;
3848 ioarcb->write_ioadl_len = 0;
3849 ioarcb->read_ioadl_len = 0;
3851 ioasa->residual_data_len = 0;
3855 * ipr_erp_request_sense - Send request sense to a device
3856 * @ipr_cmd: ipr command struct
3858 * This function sends a request sense to a device as a result
3859 * of a check condition.
3864 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3866 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3867 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3869 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3870 ipr_erp_done(ipr_cmd);
3874 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3876 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3877 cmd_pkt->cdb[0] = REQUEST_SENSE;
3878 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3879 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3880 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3881 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3883 ipr_cmd->ioadl[0].flags_and_data_len =
3884 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3885 ipr_cmd->ioadl[0].address =
3886 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3888 ipr_cmd->ioarcb.read_ioadl_len =
3889 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3890 ipr_cmd->ioarcb.read_data_transfer_length =
3891 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3893 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3894 IPR_REQUEST_SENSE_TIMEOUT * 2);
3898 * ipr_erp_cancel_all - Send cancel all to a device
3899 * @ipr_cmd: ipr command struct
3901 * This function sends a cancel all to a device to clear the
3902 * queue. If we are running TCQ on the device, QERR is set to 1,
3903 * which means all outstanding ops have been dropped on the floor.
3904 * Cancel all will return them to us.
3909 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3911 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3912 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3913 struct ipr_cmd_pkt *cmd_pkt;
3917 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3919 if (!scsi_get_tag_type(scsi_cmd->device)) {
3920 ipr_erp_request_sense(ipr_cmd);
3924 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3925 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3926 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3928 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3929 IPR_CANCEL_ALL_TIMEOUT);
3933 * ipr_dump_ioasa - Dump contents of IOASA
3934 * @ioa_cfg: ioa config struct
3935 * @ipr_cmd: ipr command struct
3937 * This function is invoked by the interrupt handler when ops
3938 * fail. It will log the IOASA if appropriate. Only called
3944 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3945 struct ipr_cmnd *ipr_cmd)
3950 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3951 __be32 *ioasa_data = (__be32 *)ioasa;
3954 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3959 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3962 error_index = ipr_get_error(ioasc);
3964 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3965 /* Don't log an error if the IOA already logged one */
3966 if (ioasa->ilid != 0)
3969 if (ipr_error_table[error_index].log_ioasa == 0)
3973 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3974 ipr_error_table[error_index].error);
3976 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3977 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3978 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3979 "Device End state: %s Phase: %s\n",
3980 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3981 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3984 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3985 data_len = sizeof(struct ipr_ioasa);
3987 data_len = be16_to_cpu(ioasa->ret_stat_len);
3989 ipr_err("IOASA Dump:\n");
3991 for (i = 0; i < data_len / 4; i += 4) {
3992 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3993 be32_to_cpu(ioasa_data[i]),
3994 be32_to_cpu(ioasa_data[i+1]),
3995 be32_to_cpu(ioasa_data[i+2]),
3996 be32_to_cpu(ioasa_data[i+3]));
4001 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4003 * @sense_buf: sense data buffer
4008 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4011 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4012 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4013 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4014 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4016 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4018 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4021 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4023 if (ipr_is_vset_device(res) &&
4024 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4025 ioasa->u.vset.failing_lba_hi != 0) {
4026 sense_buf[0] = 0x72;
4027 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4028 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4029 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4033 sense_buf[9] = 0x0A;
4034 sense_buf[10] = 0x80;
4036 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4038 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4039 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4040 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4041 sense_buf[15] = failing_lba & 0x000000ff;
4043 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4045 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4046 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4047 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4048 sense_buf[19] = failing_lba & 0x000000ff;
4050 sense_buf[0] = 0x70;
4051 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4052 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4053 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4055 /* Illegal request */
4056 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4057 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4058 sense_buf[7] = 10; /* additional length */
4060 /* IOARCB was in error */
4061 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4062 sense_buf[15] = 0xC0;
4063 else /* Parameter data was invalid */
4064 sense_buf[15] = 0x80;
4067 ((IPR_FIELD_POINTER_MASK &
4068 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4070 (IPR_FIELD_POINTER_MASK &
4071 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4073 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4074 if (ipr_is_vset_device(res))
4075 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4077 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4079 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4080 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4081 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4082 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4083 sense_buf[6] = failing_lba & 0x000000ff;
4086 sense_buf[7] = 6; /* additional length */
4092 * ipr_erp_start - Process an error response for a SCSI op
4093 * @ioa_cfg: ioa config struct
4094 * @ipr_cmd: ipr command struct
4096 * This function determines whether or not to initiate ERP
4097 * on the affected device.
4102 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4103 struct ipr_cmnd *ipr_cmd)
4105 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4106 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4107 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4110 ipr_scsi_eh_done(ipr_cmd);
4114 if (ipr_is_gscsi(res))
4115 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
4117 ipr_gen_sense(ipr_cmd);
4119 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4120 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4121 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4123 case IPR_IOASC_IR_RESOURCE_HANDLE:
4124 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4125 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4127 case IPR_IOASC_HW_SEL_TIMEOUT:
4128 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4129 res->needs_sync_complete = 1;
4131 case IPR_IOASC_SYNC_REQUIRED:
4133 res->needs_sync_complete = 1;
4134 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4136 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4137 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4138 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4140 case IPR_IOASC_BUS_WAS_RESET:
4141 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4143 * Report the bus reset and ask for a retry. The device
4144 * will give CC/UA the next command.
4146 if (!res->resetting_device)
4147 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4148 scsi_cmd->result |= (DID_ERROR << 16);
4149 res->needs_sync_complete = 1;
4151 case IPR_IOASC_HW_DEV_BUS_STATUS:
4152 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4153 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4154 ipr_erp_cancel_all(ipr_cmd);
4157 res->needs_sync_complete = 1;
4159 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4162 scsi_cmd->result |= (DID_ERROR << 16);
4163 if (!ipr_is_vset_device(res))
4164 res->needs_sync_complete = 1;
4168 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4169 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4170 scsi_cmd->scsi_done(scsi_cmd);
4174 * ipr_scsi_done - mid-layer done function
4175 * @ipr_cmd: ipr command struct
4177 * This function is invoked by the interrupt handler for
4178 * ops generated by the SCSI mid-layer
4183 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4185 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4186 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4187 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4189 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4191 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4192 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4193 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4194 scsi_cmd->scsi_done(scsi_cmd);
4196 ipr_erp_start(ioa_cfg, ipr_cmd);
4200 * ipr_save_ioafp_mode_select - Save adapters mode select data
4201 * @ioa_cfg: ioa config struct
4202 * @scsi_cmd: scsi command struct
4204 * This function saves mode select data for the adapter to
4205 * use following an adapter reset.
4208 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
4210 static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
4211 struct scsi_cmnd *scsi_cmd)
4213 if (!ioa_cfg->saved_mode_pages) {
4214 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
4216 if (!ioa_cfg->saved_mode_pages) {
4217 dev_err(&ioa_cfg->pdev->dev,
4218 "IOA mode select buffer allocation failed\n");
4219 return SCSI_MLQUEUE_HOST_BUSY;
4223 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
4224 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
4229 * ipr_queuecommand - Queue a mid-layer request
4230 * @scsi_cmd: scsi command struct
4231 * @done: done function
4233 * This function queues a request generated by the mid-layer.
4237 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4238 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4240 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4241 void (*done) (struct scsi_cmnd *))
4243 struct ipr_ioa_cfg *ioa_cfg;
4244 struct ipr_resource_entry *res;
4245 struct ipr_ioarcb *ioarcb;
4246 struct ipr_cmnd *ipr_cmd;
4249 scsi_cmd->scsi_done = done;
4250 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4251 res = scsi_cmd->device->hostdata;
4252 scsi_cmd->result = (DID_OK << 16);
4255 * We are currently blocking all devices due to a host reset
4256 * We have told the host to stop giving us new requests, but
4257 * ERP ops don't count. FIXME
4259 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4260 return SCSI_MLQUEUE_HOST_BUSY;
4263 * FIXME - Create scsi_set_host_offline interface
4264 * and the ioa_is_dead check can be removed
4266 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4267 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4268 scsi_cmd->result = (DID_NO_CONNECT << 16);
4269 scsi_cmd->scsi_done(scsi_cmd);
4273 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4274 ioarcb = &ipr_cmd->ioarcb;
4275 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4277 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4278 ipr_cmd->scsi_cmd = scsi_cmd;
4279 ioarcb->res_handle = res->cfgte.res_handle;
4280 ipr_cmd->done = ipr_scsi_done;
4281 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4283 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4284 if (scsi_cmd->underflow == 0)
4285 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4287 if (res->needs_sync_complete) {
4288 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4289 res->needs_sync_complete = 0;
4292 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4293 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4294 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4295 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4298 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4299 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4300 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4302 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
4303 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
4305 if (likely(rc == 0))
4306 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4308 if (likely(rc == 0)) {
4310 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4311 ioa_cfg->regs.ioarrin_reg);
4313 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4314 return SCSI_MLQUEUE_HOST_BUSY;
4321 * ipr_info - Get information about the card/driver
4322 * @scsi_host: scsi host struct
4325 * pointer to buffer with description string
4327 static const char * ipr_ioa_info(struct Scsi_Host *host)
4329 static char buffer[512];
4330 struct ipr_ioa_cfg *ioa_cfg;
4331 unsigned long lock_flags = 0;
4333 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4335 spin_lock_irqsave(host->host_lock, lock_flags);
4336 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4337 spin_unlock_irqrestore(host->host_lock, lock_flags);
4342 static struct scsi_host_template driver_template = {
4343 .module = THIS_MODULE,
4345 .info = ipr_ioa_info,
4346 .queuecommand = ipr_queuecommand,
4347 .eh_abort_handler = ipr_eh_abort,
4348 .eh_device_reset_handler = ipr_eh_dev_reset,
4349 .eh_host_reset_handler = ipr_eh_host_reset,
4350 .slave_alloc = ipr_slave_alloc,
4351 .slave_configure = ipr_slave_configure,
4352 .slave_destroy = ipr_slave_destroy,
4353 .change_queue_depth = ipr_change_queue_depth,
4354 .change_queue_type = ipr_change_queue_type,
4355 .bios_param = ipr_biosparam,
4356 .can_queue = IPR_MAX_COMMANDS,
4358 .sg_tablesize = IPR_MAX_SGLIST,
4359 .max_sectors = IPR_IOA_MAX_SECTORS,
4360 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4361 .use_clustering = ENABLE_CLUSTERING,
4362 .shost_attrs = ipr_ioa_attrs,
4363 .sdev_attrs = ipr_dev_attrs,
4364 .proc_name = IPR_NAME
4367 #ifdef CONFIG_PPC_PSERIES
4368 static const u16 ipr_blocked_processors[] = {
4380 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
4381 * @ioa_cfg: ioa cfg struct
4383 * Adapters that use Gemstone revision < 3.1 do not work reliably on
4384 * certain pSeries hardware. This function determines if the given
4385 * adapter is in one of these confgurations or not.
4388 * 1 if adapter is not supported / 0 if adapter is supported
4390 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
4395 if (ioa_cfg->type == 0x5702) {
4396 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
4397 &rev_id) == PCIBIOS_SUCCESSFUL) {
4399 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
4400 if (__is_processor(ipr_blocked_processors[i]))
4409 #define ipr_invalid_adapter(ioa_cfg) 0
4413 * ipr_ioa_bringdown_done - IOA bring down completion.
4414 * @ipr_cmd: ipr command struct
4416 * This function processes the completion of an adapter bring down.
4417 * It wakes any reset sleepers.
4422 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4424 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4427 ioa_cfg->in_reset_reload = 0;
4428 ioa_cfg->reset_retries = 0;
4429 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4430 wake_up_all(&ioa_cfg->reset_wait_q);
4432 spin_unlock_irq(ioa_cfg->host->host_lock);
4433 scsi_unblock_requests(ioa_cfg->host);
4434 spin_lock_irq(ioa_cfg->host->host_lock);
4437 return IPR_RC_JOB_RETURN;
4441 * ipr_ioa_reset_done - IOA reset completion.
4442 * @ipr_cmd: ipr command struct
4444 * This function processes the completion of an adapter reset.
4445 * It schedules any necessary mid-layer add/removes and
4446 * wakes any reset sleepers.
4451 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4453 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4454 struct ipr_resource_entry *res;
4455 struct ipr_hostrcb *hostrcb, *temp;
4459 ioa_cfg->in_reset_reload = 0;
4460 ioa_cfg->allow_cmds = 1;
4461 ioa_cfg->reset_cmd = NULL;
4462 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
4464 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4465 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4470 schedule_work(&ioa_cfg->work_q);
4472 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4473 list_del(&hostrcb->queue);
4474 if (i++ < IPR_NUM_LOG_HCAMS)
4475 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4477 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4480 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4482 ioa_cfg->reset_retries = 0;
4483 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4484 wake_up_all(&ioa_cfg->reset_wait_q);
4486 spin_unlock_irq(ioa_cfg->host->host_lock);
4487 scsi_unblock_requests(ioa_cfg->host);
4488 spin_lock_irq(ioa_cfg->host->host_lock);
4490 if (!ioa_cfg->allow_cmds)
4491 scsi_block_requests(ioa_cfg->host);
4494 return IPR_RC_JOB_RETURN;
4498 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4499 * @supported_dev: supported device struct
4500 * @vpids: vendor product id struct
4505 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4506 struct ipr_std_inq_vpids *vpids)
4508 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4509 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4510 supported_dev->num_records = 1;
4511 supported_dev->data_length =
4512 cpu_to_be16(sizeof(struct ipr_supported_device));
4513 supported_dev->reserved = 0;
4517 * ipr_set_supported_devs - Send Set Supported Devices for a device
4518 * @ipr_cmd: ipr command struct
4520 * This function send a Set Supported Devices to the adapter
4523 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4525 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4527 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4528 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4529 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4530 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4531 struct ipr_resource_entry *res = ipr_cmd->u.res;
4533 ipr_cmd->job_step = ipr_ioa_reset_done;
4535 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
4536 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
4539 ipr_cmd->u.res = res;
4540 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4542 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4543 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4544 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4546 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4547 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4548 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4550 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4551 sizeof(struct ipr_supported_device));
4552 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4553 offsetof(struct ipr_misc_cbs, supp_dev));
4554 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4555 ioarcb->write_data_transfer_length =
4556 cpu_to_be32(sizeof(struct ipr_supported_device));
4558 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4559 IPR_SET_SUP_DEVICE_TIMEOUT);
4561 ipr_cmd->job_step = ipr_set_supported_devs;
4562 return IPR_RC_JOB_RETURN;
4565 return IPR_RC_JOB_CONTINUE;
4569 * ipr_setup_write_cache - Disable write cache if needed
4570 * @ipr_cmd: ipr command struct
4572 * This function sets up adapters write cache to desired setting
4575 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4577 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
4579 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4581 ipr_cmd->job_step = ipr_set_supported_devs;
4582 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4583 struct ipr_resource_entry, queue);
4585 if (ioa_cfg->cache_state != CACHE_DISABLED)
4586 return IPR_RC_JOB_CONTINUE;
4588 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4589 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4590 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
4591 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
4593 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4595 return IPR_RC_JOB_RETURN;
4599 * ipr_get_mode_page - Locate specified mode page
4600 * @mode_pages: mode page buffer
4601 * @page_code: page code to find
4602 * @len: minimum required length for mode page
4605 * pointer to mode page / NULL on failure
4607 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4608 u32 page_code, u32 len)
4610 struct ipr_mode_page_hdr *mode_hdr;
4614 if (!mode_pages || (mode_pages->hdr.length == 0))
4617 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4618 mode_hdr = (struct ipr_mode_page_hdr *)
4619 (mode_pages->data + mode_pages->hdr.block_desc_len);
4622 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4623 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4627 page_length = (sizeof(struct ipr_mode_page_hdr) +
4628 mode_hdr->page_length);
4629 length -= page_length;
4630 mode_hdr = (struct ipr_mode_page_hdr *)
4631 ((unsigned long)mode_hdr + page_length);
4638 * ipr_check_term_power - Check for term power errors
4639 * @ioa_cfg: ioa config struct
4640 * @mode_pages: IOAFP mode pages buffer
4642 * Check the IOAFP's mode page 28 for term power errors
4647 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4648 struct ipr_mode_pages *mode_pages)
4652 struct ipr_dev_bus_entry *bus;
4653 struct ipr_mode_page28 *mode_page;
4655 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4656 sizeof(struct ipr_mode_page28));
4658 entry_length = mode_page->entry_length;
4660 bus = mode_page->bus;
4662 for (i = 0; i < mode_page->num_entries; i++) {
4663 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4664 dev_err(&ioa_cfg->pdev->dev,
4665 "Term power is absent on scsi bus %d\n",
4669 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4674 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4675 * @ioa_cfg: ioa config struct
4677 * Looks through the config table checking for SES devices. If
4678 * the SES device is in the SES table indicating a maximum SCSI
4679 * bus speed, the speed is limited for the bus.
4684 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4689 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4690 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4691 ioa_cfg->bus_attr[i].bus_width);
4693 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4694 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4699 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4700 * @ioa_cfg: ioa config struct
4701 * @mode_pages: mode page 28 buffer
4703 * Updates mode page 28 based on driver configuration
4708 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4709 struct ipr_mode_pages *mode_pages)
4711 int i, entry_length;
4712 struct ipr_dev_bus_entry *bus;
4713 struct ipr_bus_attributes *bus_attr;
4714 struct ipr_mode_page28 *mode_page;
4716 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4717 sizeof(struct ipr_mode_page28));
4719 entry_length = mode_page->entry_length;
4721 /* Loop for each device bus entry */
4722 for (i = 0, bus = mode_page->bus;
4723 i < mode_page->num_entries;
4724 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4725 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4726 dev_err(&ioa_cfg->pdev->dev,
4727 "Invalid resource address reported: 0x%08X\n",
4728 IPR_GET_PHYS_LOC(bus->res_addr));
4732 bus_attr = &ioa_cfg->bus_attr[i];
4733 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4734 bus->bus_width = bus_attr->bus_width;
4735 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4736 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4737 if (bus_attr->qas_enabled)
4738 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4740 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4745 * ipr_build_mode_select - Build a mode select command
4746 * @ipr_cmd: ipr command struct
4747 * @res_handle: resource handle to send command to
4748 * @parm: Byte 2 of Mode Sense command
4749 * @dma_addr: DMA buffer address
4750 * @xfer_len: data transfer length
4755 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4756 __be32 res_handle, u8 parm, u32 dma_addr,
4759 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4760 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4762 ioarcb->res_handle = res_handle;
4763 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4764 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4765 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4766 ioarcb->cmd_pkt.cdb[1] = parm;
4767 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4769 ioadl->flags_and_data_len =
4770 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4771 ioadl->address = cpu_to_be32(dma_addr);
4772 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4773 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4777 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4778 * @ipr_cmd: ipr command struct
4780 * This function sets up the SCSI bus attributes and sends
4781 * a Mode Select for Page 28 to activate them.
4786 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4789 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4793 if (ioa_cfg->saved_mode_pages) {
4794 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4795 ioa_cfg->saved_mode_page_len);
4796 length = ioa_cfg->saved_mode_page_len;
4798 ipr_scsi_bus_speed_limit(ioa_cfg);
4799 ipr_check_term_power(ioa_cfg, mode_pages);
4800 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4801 length = mode_pages->hdr.length + 1;
4802 mode_pages->hdr.length = 0;
4805 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4806 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4809 ipr_cmd->job_step = ipr_setup_write_cache;
4810 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4813 return IPR_RC_JOB_RETURN;
4817 * ipr_build_mode_sense - Builds a mode sense command
4818 * @ipr_cmd: ipr command struct
4819 * @res: resource entry struct
4820 * @parm: Byte 2 of mode sense command
4821 * @dma_addr: DMA address of mode sense buffer
4822 * @xfer_len: Size of DMA buffer
4827 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4829 u8 parm, u32 dma_addr, u8 xfer_len)
4831 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4832 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4834 ioarcb->res_handle = res_handle;
4835 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4836 ioarcb->cmd_pkt.cdb[2] = parm;
4837 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4838 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4840 ioadl->flags_and_data_len =
4841 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4842 ioadl->address = cpu_to_be32(dma_addr);
4843 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4844 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4848 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4849 * @ipr_cmd: ipr command struct
4851 * This function send a Page 28 mode sense to the IOA to
4852 * retrieve SCSI bus attributes.
4857 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4862 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4863 0x28, ioa_cfg->vpd_cbs_dma +
4864 offsetof(struct ipr_misc_cbs, mode_pages),
4865 sizeof(struct ipr_mode_pages));
4867 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4869 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4872 return IPR_RC_JOB_RETURN;
4876 * ipr_init_res_table - Initialize the resource table
4877 * @ipr_cmd: ipr command struct
4879 * This function looks through the existing resource table, comparing
4880 * it with the config table. This function will take care of old/new
4881 * devices and schedule adding/removing them from the mid-layer
4885 * IPR_RC_JOB_CONTINUE
4887 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4889 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4890 struct ipr_resource_entry *res, *temp;
4891 struct ipr_config_table_entry *cfgte;
4896 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4897 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4899 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4900 list_move_tail(&res->queue, &old_res);
4902 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4903 cfgte = &ioa_cfg->cfg_table->dev[i];
4906 list_for_each_entry_safe(res, temp, &old_res, queue) {
4907 if (!memcmp(&res->cfgte.res_addr,
4908 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4909 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4916 if (list_empty(&ioa_cfg->free_res_q)) {
4917 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4922 res = list_entry(ioa_cfg->free_res_q.next,
4923 struct ipr_resource_entry, queue);
4924 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4925 ipr_init_res_entry(res);
4930 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4933 list_for_each_entry_safe(res, temp, &old_res, queue) {
4935 res->del_from_ml = 1;
4936 res->sdev->hostdata = NULL;
4937 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4939 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4943 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4946 return IPR_RC_JOB_CONTINUE;
4950 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4951 * @ipr_cmd: ipr command struct
4953 * This function sends a Query IOA Configuration command
4954 * to the adapter to retrieve the IOA configuration table.
4959 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4961 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4962 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4963 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4964 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4967 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4968 ucode_vpd->major_release, ucode_vpd->card_type,
4969 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4970 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4971 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4973 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4974 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4975 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4977 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4978 ioarcb->read_data_transfer_length =
4979 cpu_to_be32(sizeof(struct ipr_config_table));
4981 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4982 ioadl->flags_and_data_len =
4983 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4985 ipr_cmd->job_step = ipr_init_res_table;
4987 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4990 return IPR_RC_JOB_RETURN;
4994 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4995 * @ipr_cmd: ipr command struct
4997 * This utility function sends an inquiry to the adapter.
5002 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5003 u32 dma_addr, u8 xfer_len)
5005 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5006 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5009 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5010 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5012 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5013 ioarcb->cmd_pkt.cdb[1] = flags;
5014 ioarcb->cmd_pkt.cdb[2] = page;
5015 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5017 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5018 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5020 ioadl->address = cpu_to_be32(dma_addr);
5021 ioadl->flags_and_data_len =
5022 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5024 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5029 * ipr_inquiry_page_supported - Is the given inquiry page supported
5030 * @page0: inquiry page 0 buffer
5033 * This function determines if the specified inquiry page is supported.
5036 * 1 if page is supported / 0 if not
5038 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5042 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5043 if (page0->page[i] == page)
5050 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5051 * @ipr_cmd: ipr command struct
5053 * This function sends a Page 3 inquiry to the adapter
5054 * to retrieve software VPD information.
5057 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5059 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5061 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5062 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5066 if (!ipr_inquiry_page_supported(page0, 1))
5067 ioa_cfg->cache_state = CACHE_NONE;
5069 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5071 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5072 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5073 sizeof(struct ipr_inquiry_page3));
5076 return IPR_RC_JOB_RETURN;
5080 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5081 * @ipr_cmd: ipr command struct
5083 * This function sends a Page 0 inquiry to the adapter
5084 * to retrieve supported inquiry pages.
5087 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5089 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5091 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5096 /* Grab the type out of the VPD and store it away */
5097 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5099 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5101 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
5103 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
5104 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
5105 sizeof(struct ipr_inquiry_page0));
5108 return IPR_RC_JOB_RETURN;
5112 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
5113 * @ipr_cmd: ipr command struct
5115 * This function sends a standard inquiry to the adapter.
5120 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
5122 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5125 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
5127 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
5128 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
5129 sizeof(struct ipr_ioa_vpd));
5132 return IPR_RC_JOB_RETURN;
5136 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
5137 * @ipr_cmd: ipr command struct
5139 * This function send an Identify Host Request Response Queue
5140 * command to establish the HRRQ with the adapter.
5145 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
5147 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5148 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5151 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
5153 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
5154 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5156 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5157 ioarcb->cmd_pkt.cdb[2] =
5158 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
5159 ioarcb->cmd_pkt.cdb[3] =
5160 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
5161 ioarcb->cmd_pkt.cdb[4] =
5162 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
5163 ioarcb->cmd_pkt.cdb[5] =
5164 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
5165 ioarcb->cmd_pkt.cdb[7] =
5166 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
5167 ioarcb->cmd_pkt.cdb[8] =
5168 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
5170 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
5172 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5175 return IPR_RC_JOB_RETURN;
5179 * ipr_reset_timer_done - Adapter reset timer function
5180 * @ipr_cmd: ipr command struct
5182 * Description: This function is used in adapter reset processing
5183 * for timing events. If the reset_cmd pointer in the IOA
5184 * config struct is not this adapter's we are doing nested
5185 * resets and fail_all_ops will take care of freeing the
5191 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
5193 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5194 unsigned long lock_flags = 0;
5196 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5198 if (ioa_cfg->reset_cmd == ipr_cmd) {
5199 list_del(&ipr_cmd->queue);
5200 ipr_cmd->done(ipr_cmd);
5203 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5207 * ipr_reset_start_timer - Start a timer for adapter reset job
5208 * @ipr_cmd: ipr command struct
5209 * @timeout: timeout value
5211 * Description: This function is used in adapter reset processing
5212 * for timing events. If the reset_cmd pointer in the IOA
5213 * config struct is not this adapter's we are doing nested
5214 * resets and fail_all_ops will take care of freeing the
5220 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
5221 unsigned long timeout)
5223 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5224 ipr_cmd->done = ipr_reset_ioa_job;
5226 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5227 ipr_cmd->timer.expires = jiffies + timeout;
5228 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
5229 add_timer(&ipr_cmd->timer);
5233 * ipr_init_ioa_mem - Initialize ioa_cfg control block
5234 * @ioa_cfg: ioa cfg struct
5239 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
5241 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
5243 /* Initialize Host RRQ pointers */
5244 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
5245 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
5246 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5247 ioa_cfg->toggle_bit = 1;
5249 /* Zero out config table */
5250 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
5254 * ipr_reset_enable_ioa - Enable the IOA following a reset.
5255 * @ipr_cmd: ipr command struct
5257 * This function reinitializes some control blocks and
5258 * enables destructive diagnostics on the adapter.
5263 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
5265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5266 volatile u32 int_reg;
5269 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
5270 ipr_init_ioa_mem(ioa_cfg);
5272 ioa_cfg->allow_interrupts = 1;
5273 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5275 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5276 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
5277 ioa_cfg->regs.clr_interrupt_mask_reg);
5278 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5279 return IPR_RC_JOB_CONTINUE;
5282 /* Enable destructive diagnostics on IOA */
5283 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
5285 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
5286 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5288 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
5290 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5291 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
5292 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
5293 ipr_cmd->done = ipr_reset_ioa_job;
5294 add_timer(&ipr_cmd->timer);
5295 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5298 return IPR_RC_JOB_RETURN;
5302 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
5303 * @ipr_cmd: ipr command struct
5305 * This function is invoked when an adapter dump has run out
5306 * of processing time.
5309 * IPR_RC_JOB_CONTINUE
5311 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
5313 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5315 if (ioa_cfg->sdt_state == GET_DUMP)
5316 ioa_cfg->sdt_state = ABORT_DUMP;
5318 ipr_cmd->job_step = ipr_reset_alert;
5320 return IPR_RC_JOB_CONTINUE;
5324 * ipr_unit_check_no_data - Log a unit check/no data error log
5325 * @ioa_cfg: ioa config struct
5327 * Logs an error indicating the adapter unit checked, but for some
5328 * reason, we were unable to fetch the unit check buffer.
5333 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
5335 ioa_cfg->errors_logged++;
5336 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
5340 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
5341 * @ioa_cfg: ioa config struct
5343 * Fetches the unit check buffer from the adapter by clocking the data
5344 * through the mailbox register.
5349 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
5351 unsigned long mailbox;
5352 struct ipr_hostrcb *hostrcb;
5353 struct ipr_uc_sdt sdt;
5356 mailbox = readl(ioa_cfg->ioa_mailbox);
5358 if (!ipr_sdt_is_fmt2(mailbox)) {
5359 ipr_unit_check_no_data(ioa_cfg);
5363 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
5364 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
5365 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
5367 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
5368 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
5369 ipr_unit_check_no_data(ioa_cfg);
5373 /* Find length of the first sdt entry (UC buffer) */
5374 length = (be32_to_cpu(sdt.entry[0].end_offset) -
5375 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
5377 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
5378 struct ipr_hostrcb, queue);
5379 list_del(&hostrcb->queue);
5380 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
5382 rc = ipr_get_ldump_data_section(ioa_cfg,
5383 be32_to_cpu(sdt.entry[0].bar_str_offset),
5384 (__be32 *)&hostrcb->hcam,
5385 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
5388 ipr_handle_log_data(ioa_cfg, hostrcb);
5390 ipr_unit_check_no_data(ioa_cfg);
5392 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
5396 * ipr_reset_restore_cfg_space - Restore PCI config space.
5397 * @ipr_cmd: ipr command struct
5399 * Description: This function restores the saved PCI config space of
5400 * the adapter, fails all outstanding ops back to the callers, and
5401 * fetches the dump/unit check if applicable to this reset.
5404 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5406 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
5408 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5412 pci_unblock_user_cfg_access(ioa_cfg->pdev);
5413 rc = pci_restore_state(ioa_cfg->pdev);
5415 if (rc != PCIBIOS_SUCCESSFUL) {
5416 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5417 return IPR_RC_JOB_CONTINUE;
5420 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
5421 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5422 return IPR_RC_JOB_CONTINUE;
5425 ipr_fail_all_ops(ioa_cfg);
5427 if (ioa_cfg->ioa_unit_checked) {
5428 ioa_cfg->ioa_unit_checked = 0;
5429 ipr_get_unit_check_buffer(ioa_cfg);
5430 ipr_cmd->job_step = ipr_reset_alert;
5431 ipr_reset_start_timer(ipr_cmd, 0);
5432 return IPR_RC_JOB_RETURN;
5435 if (ioa_cfg->in_ioa_bringdown) {
5436 ipr_cmd->job_step = ipr_ioa_bringdown_done;
5438 ipr_cmd->job_step = ipr_reset_enable_ioa;
5440 if (GET_DUMP == ioa_cfg->sdt_state) {
5441 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
5442 ipr_cmd->job_step = ipr_reset_wait_for_dump;
5443 schedule_work(&ioa_cfg->work_q);
5444 return IPR_RC_JOB_RETURN;
5449 return IPR_RC_JOB_CONTINUE;
5453 * ipr_reset_start_bist - Run BIST on the adapter.
5454 * @ipr_cmd: ipr command struct
5456 * Description: This function runs BIST on the adapter, then delays 2 seconds.
5459 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5461 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
5463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5467 pci_block_user_cfg_access(ioa_cfg->pdev);
5468 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
5470 if (rc != PCIBIOS_SUCCESSFUL) {
5471 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5472 rc = IPR_RC_JOB_CONTINUE;
5474 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
5475 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
5476 rc = IPR_RC_JOB_RETURN;
5484 * ipr_reset_allowed - Query whether or not IOA can be reset
5485 * @ioa_cfg: ioa config struct
5488 * 0 if reset not allowed / non-zero if reset is allowed
5490 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5492 volatile u32 temp_reg;
5494 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5495 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5499 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5500 * @ipr_cmd: ipr command struct
5502 * Description: This function waits for adapter permission to run BIST,
5503 * then runs BIST. If the adapter does not give permission after a
5504 * reasonable time, we will reset the adapter anyway. The impact of
5505 * resetting the adapter without warning the adapter is the risk of
5506 * losing the persistent error log on the adapter. If the adapter is
5507 * reset while it is writing to the flash on the adapter, the flash
5508 * segment will have bad ECC and be zeroed.
5511 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5513 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5515 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5516 int rc = IPR_RC_JOB_RETURN;
5518 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5519 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5520 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5522 ipr_cmd->job_step = ipr_reset_start_bist;
5523 rc = IPR_RC_JOB_CONTINUE;
5530 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5531 * @ipr_cmd: ipr command struct
5533 * Description: This function alerts the adapter that it will be reset.
5534 * If memory space is not currently enabled, proceed directly
5535 * to running BIST on the adapter. The timer must always be started
5536 * so we guarantee we do not run BIST from ipr_isr.
5541 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5543 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5548 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5550 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5551 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5552 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5553 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5555 ipr_cmd->job_step = ipr_reset_start_bist;
5558 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5559 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5562 return IPR_RC_JOB_RETURN;
5566 * ipr_reset_ucode_download_done - Microcode download completion
5567 * @ipr_cmd: ipr command struct
5569 * Description: This function unmaps the microcode download buffer.
5572 * IPR_RC_JOB_CONTINUE
5574 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5576 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5577 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5579 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5580 sglist->num_sg, DMA_TO_DEVICE);
5582 ipr_cmd->job_step = ipr_reset_alert;
5583 return IPR_RC_JOB_CONTINUE;
5587 * ipr_reset_ucode_download - Download microcode to the adapter
5588 * @ipr_cmd: ipr command struct
5590 * Description: This function checks to see if it there is microcode
5591 * to download to the adapter. If there is, a download is performed.
5594 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5596 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5598 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5599 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5602 ipr_cmd->job_step = ipr_reset_alert;
5605 return IPR_RC_JOB_CONTINUE;
5607 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5608 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5609 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5610 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5611 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5612 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5613 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5615 ipr_build_ucode_ioadl(ipr_cmd, sglist);
5616 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5618 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5619 IPR_WRITE_BUFFER_TIMEOUT);
5622 return IPR_RC_JOB_RETURN;
5626 * ipr_reset_shutdown_ioa - Shutdown the adapter
5627 * @ipr_cmd: ipr command struct
5629 * Description: This function issues an adapter shutdown of the
5630 * specified type to the specified adapter as part of the
5631 * adapter reset job.
5634 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5636 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5639 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5640 unsigned long timeout;
5641 int rc = IPR_RC_JOB_CONTINUE;
5644 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5645 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5646 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5647 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5648 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5650 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5651 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5652 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5653 timeout = IPR_INTERNAL_TIMEOUT;
5655 timeout = IPR_SHUTDOWN_TIMEOUT;
5657 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5659 rc = IPR_RC_JOB_RETURN;
5660 ipr_cmd->job_step = ipr_reset_ucode_download;
5662 ipr_cmd->job_step = ipr_reset_alert;
5669 * ipr_reset_ioa_job - Adapter reset job
5670 * @ipr_cmd: ipr command struct
5672 * Description: This function is the job router for the adapter reset job.
5677 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5680 unsigned long scratch = ipr_cmd->u.scratch;
5681 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5684 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5686 if (ioa_cfg->reset_cmd != ipr_cmd) {
5688 * We are doing nested adapter resets and this is
5689 * not the current reset job.
5691 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5695 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5696 dev_err(&ioa_cfg->pdev->dev,
5697 "0x%02X failed with IOASC: 0x%08X\n",
5698 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5700 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5701 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5705 ipr_reinit_ipr_cmnd(ipr_cmd);
5706 ipr_cmd->u.scratch = scratch;
5707 rc = ipr_cmd->job_step(ipr_cmd);
5708 } while(rc == IPR_RC_JOB_CONTINUE);
5712 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5713 * @ioa_cfg: ioa config struct
5714 * @job_step: first job step of reset job
5715 * @shutdown_type: shutdown type
5717 * Description: This function will initiate the reset of the given adapter
5718 * starting at the selected job step.
5719 * If the caller needs to wait on the completion of the reset,
5720 * the caller must sleep on the reset_wait_q.
5725 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5726 int (*job_step) (struct ipr_cmnd *),
5727 enum ipr_shutdown_type shutdown_type)
5729 struct ipr_cmnd *ipr_cmd;
5731 ioa_cfg->in_reset_reload = 1;
5732 ioa_cfg->allow_cmds = 0;
5733 scsi_block_requests(ioa_cfg->host);
5735 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5736 ioa_cfg->reset_cmd = ipr_cmd;
5737 ipr_cmd->job_step = job_step;
5738 ipr_cmd->u.shutdown_type = shutdown_type;
5740 ipr_reset_ioa_job(ipr_cmd);
5744 * ipr_initiate_ioa_reset - Initiate an adapter reset
5745 * @ioa_cfg: ioa config struct
5746 * @shutdown_type: shutdown type
5748 * Description: This function will initiate the reset of the given adapter.
5749 * If the caller needs to wait on the completion of the reset,
5750 * the caller must sleep on the reset_wait_q.
5755 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5756 enum ipr_shutdown_type shutdown_type)
5758 if (ioa_cfg->ioa_is_dead)
5761 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5762 ioa_cfg->sdt_state = ABORT_DUMP;
5764 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5765 dev_err(&ioa_cfg->pdev->dev,
5766 "IOA taken offline - error recovery failed\n");
5768 ioa_cfg->reset_retries = 0;
5769 ioa_cfg->ioa_is_dead = 1;
5771 if (ioa_cfg->in_ioa_bringdown) {
5772 ioa_cfg->reset_cmd = NULL;
5773 ioa_cfg->in_reset_reload = 0;
5774 ipr_fail_all_ops(ioa_cfg);
5775 wake_up_all(&ioa_cfg->reset_wait_q);
5777 spin_unlock_irq(ioa_cfg->host->host_lock);
5778 scsi_unblock_requests(ioa_cfg->host);
5779 spin_lock_irq(ioa_cfg->host->host_lock);
5782 ioa_cfg->in_ioa_bringdown = 1;
5783 shutdown_type = IPR_SHUTDOWN_NONE;
5787 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5792 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5793 * @ioa_cfg: ioa cfg struct
5795 * Description: This is the second phase of adapter intialization
5796 * This function takes care of initilizing the adapter to the point
5797 * where it can accept new commands.
5800 * 0 on sucess / -EIO on failure
5802 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5805 unsigned long host_lock_flags = 0;
5808 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5809 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5810 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5813 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5814 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5816 if (ioa_cfg->ioa_is_dead) {
5818 } else if (ipr_invalid_adapter(ioa_cfg)) {
5822 dev_err(&ioa_cfg->pdev->dev,
5823 "Adapter not supported in this hardware configuration.\n");
5826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5833 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5834 * @ioa_cfg: ioa config struct
5839 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5843 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5844 if (ioa_cfg->ipr_cmnd_list[i])
5845 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5846 ioa_cfg->ipr_cmnd_list[i],
5847 ioa_cfg->ipr_cmnd_list_dma[i]);
5849 ioa_cfg->ipr_cmnd_list[i] = NULL;
5852 if (ioa_cfg->ipr_cmd_pool)
5853 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5855 ioa_cfg->ipr_cmd_pool = NULL;
5859 * ipr_free_mem - Frees memory allocated for an adapter
5860 * @ioa_cfg: ioa cfg struct
5865 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5869 kfree(ioa_cfg->res_entries);
5870 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5871 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5872 ipr_free_cmd_blks(ioa_cfg);
5873 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5874 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5875 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5877 ioa_cfg->cfg_table_dma);
5879 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5880 pci_free_consistent(ioa_cfg->pdev,
5881 sizeof(struct ipr_hostrcb),
5882 ioa_cfg->hostrcb[i],
5883 ioa_cfg->hostrcb_dma[i]);
5886 ipr_free_dump(ioa_cfg);
5887 kfree(ioa_cfg->saved_mode_pages);
5888 kfree(ioa_cfg->trace);
5892 * ipr_free_all_resources - Free all allocated resources for an adapter.
5893 * @ipr_cmd: ipr command struct
5895 * This function frees all allocated resources for the
5896 * specified adapter.
5901 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5903 struct pci_dev *pdev = ioa_cfg->pdev;
5906 free_irq(pdev->irq, ioa_cfg);
5907 iounmap(ioa_cfg->hdw_dma_regs);
5908 pci_release_regions(pdev);
5909 ipr_free_mem(ioa_cfg);
5910 scsi_host_put(ioa_cfg->host);
5911 pci_disable_device(pdev);
5916 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5917 * @ioa_cfg: ioa config struct
5920 * 0 on success / -ENOMEM on allocation failure
5922 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5924 struct ipr_cmnd *ipr_cmd;
5925 struct ipr_ioarcb *ioarcb;
5926 dma_addr_t dma_addr;
5929 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5930 sizeof(struct ipr_cmnd), 8, 0);
5932 if (!ioa_cfg->ipr_cmd_pool)
5935 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5936 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5939 ipr_free_cmd_blks(ioa_cfg);
5943 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5944 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5945 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5947 ioarcb = &ipr_cmd->ioarcb;
5948 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5949 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5950 ioarcb->write_ioadl_addr =
5951 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5952 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5953 ioarcb->ioasa_host_pci_addr =
5954 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5955 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5956 ipr_cmd->cmd_index = i;
5957 ipr_cmd->ioa_cfg = ioa_cfg;
5958 ipr_cmd->sense_buffer_dma = dma_addr +
5959 offsetof(struct ipr_cmnd, sense_buffer);
5961 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5968 * ipr_alloc_mem - Allocate memory for an adapter
5969 * @ioa_cfg: ioa config struct
5972 * 0 on success / non-zero for error
5974 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5976 struct pci_dev *pdev = ioa_cfg->pdev;
5977 int i, rc = -ENOMEM;
5980 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
5981 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5983 if (!ioa_cfg->res_entries)
5986 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5987 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5989 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5990 sizeof(struct ipr_misc_cbs),
5991 &ioa_cfg->vpd_cbs_dma);
5993 if (!ioa_cfg->vpd_cbs)
5994 goto out_free_res_entries;
5996 if (ipr_alloc_cmd_blks(ioa_cfg))
5997 goto out_free_vpd_cbs;
5999 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
6000 sizeof(u32) * IPR_NUM_CMD_BLKS,
6001 &ioa_cfg->host_rrq_dma);
6003 if (!ioa_cfg->host_rrq)
6004 goto out_ipr_free_cmd_blocks;
6006 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
6007 sizeof(struct ipr_config_table),
6008 &ioa_cfg->cfg_table_dma);
6010 if (!ioa_cfg->cfg_table)
6011 goto out_free_host_rrq;
6013 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6014 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
6015 sizeof(struct ipr_hostrcb),
6016 &ioa_cfg->hostrcb_dma[i]);
6018 if (!ioa_cfg->hostrcb[i])
6019 goto out_free_hostrcb_dma;
6021 ioa_cfg->hostrcb[i]->hostrcb_dma =
6022 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
6023 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
6026 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
6027 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
6029 if (!ioa_cfg->trace)
6030 goto out_free_hostrcb_dma;
6037 out_free_hostrcb_dma:
6039 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
6040 ioa_cfg->hostrcb[i],
6041 ioa_cfg->hostrcb_dma[i]);
6043 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
6044 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
6046 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6047 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6048 out_ipr_free_cmd_blocks:
6049 ipr_free_cmd_blks(ioa_cfg);
6051 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
6052 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6053 out_free_res_entries:
6054 kfree(ioa_cfg->res_entries);
6059 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
6060 * @ioa_cfg: ioa config struct
6065 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
6069 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6070 ioa_cfg->bus_attr[i].bus = i;
6071 ioa_cfg->bus_attr[i].qas_enabled = 0;
6072 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
6073 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
6074 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
6076 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
6081 * ipr_init_ioa_cfg - Initialize IOA config struct
6082 * @ioa_cfg: ioa config struct
6083 * @host: scsi host struct
6084 * @pdev: PCI dev struct
6089 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
6090 struct Scsi_Host *host, struct pci_dev *pdev)
6092 const struct ipr_interrupt_offsets *p;
6093 struct ipr_interrupts *t;
6096 ioa_cfg->host = host;
6097 ioa_cfg->pdev = pdev;
6098 ioa_cfg->log_level = ipr_log_level;
6099 ioa_cfg->doorbell = IPR_DOORBELL;
6100 if (!ipr_auto_create)
6101 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6102 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
6103 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
6104 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
6105 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
6106 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
6107 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
6108 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
6109 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
6111 INIT_LIST_HEAD(&ioa_cfg->free_q);
6112 INIT_LIST_HEAD(&ioa_cfg->pending_q);
6113 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
6114 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
6115 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
6116 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
6117 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
6118 init_waitqueue_head(&ioa_cfg->reset_wait_q);
6119 ioa_cfg->sdt_state = INACTIVE;
6120 if (ipr_enable_cache)
6121 ioa_cfg->cache_state = CACHE_ENABLED;
6123 ioa_cfg->cache_state = CACHE_DISABLED;
6125 ipr_initialize_bus_attr(ioa_cfg);
6127 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
6128 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
6129 host->max_channel = IPR_MAX_BUS_TO_SCAN;
6130 host->unique_id = host->host_no;
6131 host->max_cmd_len = IPR_MAX_CDB_LEN;
6132 pci_set_drvdata(pdev, ioa_cfg);
6134 p = &ioa_cfg->chip_cfg->regs;
6136 base = ioa_cfg->hdw_dma_regs;
6138 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
6139 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
6140 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
6141 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
6142 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
6143 t->ioarrin_reg = base + p->ioarrin_reg;
6144 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
6145 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
6146 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
6150 * ipr_get_chip_cfg - Find adapter chip configuration
6151 * @dev_id: PCI device id struct
6154 * ptr to chip config on success / NULL on failure
6156 static const struct ipr_chip_cfg_t * __devinit
6157 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
6161 if (dev_id->driver_data)
6162 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
6164 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
6165 if (ipr_chip[i].vendor == dev_id->vendor &&
6166 ipr_chip[i].device == dev_id->device)
6167 return ipr_chip[i].cfg;
6172 * ipr_probe_ioa - Allocates memory and does first stage of initialization
6173 * @pdev: PCI device struct
6174 * @dev_id: PCI device id struct
6177 * 0 on success / non-zero on failure
6179 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
6180 const struct pci_device_id *dev_id)
6182 struct ipr_ioa_cfg *ioa_cfg;
6183 struct Scsi_Host *host;
6184 unsigned long ipr_regs_pci;
6185 void __iomem *ipr_regs;
6186 u32 rc = PCIBIOS_SUCCESSFUL;
6190 if ((rc = pci_enable_device(pdev))) {
6191 dev_err(&pdev->dev, "Cannot enable adapter\n");
6195 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
6197 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
6200 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
6205 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
6206 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
6208 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
6210 if (!ioa_cfg->chip_cfg) {
6211 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
6212 dev_id->vendor, dev_id->device);
6213 goto out_scsi_host_put;
6216 ipr_regs_pci = pci_resource_start(pdev, 0);
6218 rc = pci_request_regions(pdev, IPR_NAME);
6221 "Couldn't register memory range of registers\n");
6222 goto out_scsi_host_put;
6225 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
6229 "Couldn't map memory range of registers\n");
6231 goto out_release_regions;
6234 ioa_cfg->hdw_dma_regs = ipr_regs;
6235 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
6236 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
6238 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
6240 pci_set_master(pdev);
6242 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6244 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
6248 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
6249 ioa_cfg->chip_cfg->cache_line_size);
6251 if (rc != PCIBIOS_SUCCESSFUL) {
6252 dev_err(&pdev->dev, "Write of cache line size failed\n");
6257 /* Save away PCI config space for use following IOA reset */
6258 rc = pci_save_state(pdev);
6260 if (rc != PCIBIOS_SUCCESSFUL) {
6261 dev_err(&pdev->dev, "Failed to save PCI config space\n");
6266 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
6269 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
6272 rc = ipr_alloc_mem(ioa_cfg);
6275 "Couldn't allocate enough memory for device driver!\n");
6279 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
6280 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
6283 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
6288 spin_lock(&ipr_driver_lock);
6289 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
6290 spin_unlock(&ipr_driver_lock);
6297 ipr_free_mem(ioa_cfg);
6300 out_release_regions:
6301 pci_release_regions(pdev);
6303 scsi_host_put(host);
6305 pci_disable_device(pdev);
6310 * ipr_scan_vsets - Scans for VSET devices
6311 * @ioa_cfg: ioa config struct
6313 * Description: Since the VSET resources do not follow SAM in that we can have
6314 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
6319 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
6323 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
6324 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
6325 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
6329 * ipr_initiate_ioa_bringdown - Bring down an adapter
6330 * @ioa_cfg: ioa config struct
6331 * @shutdown_type: shutdown type
6333 * Description: This function will initiate bringing down the adapter.
6334 * This consists of issuing an IOA shutdown to the adapter
6335 * to flush the cache, and running BIST.
6336 * If the caller needs to wait on the completion of the reset,
6337 * the caller must sleep on the reset_wait_q.
6342 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
6343 enum ipr_shutdown_type shutdown_type)
6346 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6347 ioa_cfg->sdt_state = ABORT_DUMP;
6348 ioa_cfg->reset_retries = 0;
6349 ioa_cfg->in_ioa_bringdown = 1;
6350 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
6355 * __ipr_remove - Remove a single adapter
6356 * @pdev: pci device struct
6358 * Adapter hot plug remove entry point.
6363 static void __ipr_remove(struct pci_dev *pdev)
6365 unsigned long host_lock_flags = 0;
6366 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6369 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6370 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6373 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6374 flush_scheduled_work();
6375 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6377 spin_lock(&ipr_driver_lock);
6378 list_del(&ioa_cfg->queue);
6379 spin_unlock(&ipr_driver_lock);
6381 if (ioa_cfg->sdt_state == ABORT_DUMP)
6382 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6383 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6385 ipr_free_all_resources(ioa_cfg);
6391 * ipr_remove - IOA hot plug remove entry point
6392 * @pdev: pci device struct
6394 * Adapter hot plug remove entry point.
6399 static void ipr_remove(struct pci_dev *pdev)
6401 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6405 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6407 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6409 scsi_remove_host(ioa_cfg->host);
6417 * ipr_probe - Adapter hot plug add entry point
6420 * 0 on success / non-zero on failure
6422 static int __devinit ipr_probe(struct pci_dev *pdev,
6423 const struct pci_device_id *dev_id)
6425 struct ipr_ioa_cfg *ioa_cfg;
6428 rc = ipr_probe_ioa(pdev, dev_id);
6433 ioa_cfg = pci_get_drvdata(pdev);
6434 rc = ipr_probe_ioa_part2(ioa_cfg);
6441 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
6448 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6452 scsi_remove_host(ioa_cfg->host);
6457 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6461 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6463 scsi_remove_host(ioa_cfg->host);
6468 scsi_scan_host(ioa_cfg->host);
6469 ipr_scan_vsets(ioa_cfg);
6470 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
6471 ioa_cfg->allow_ml_add_del = 1;
6472 ioa_cfg->host->max_channel = IPR_VSET_BUS;
6473 schedule_work(&ioa_cfg->work_q);
6478 * ipr_shutdown - Shutdown handler.
6479 * @pdev: pci device struct
6481 * This function is invoked upon system shutdown/reboot. It will issue
6482 * an adapter shutdown to the adapter to flush the write cache.
6487 static void ipr_shutdown(struct pci_dev *pdev)
6489 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6490 unsigned long lock_flags = 0;
6492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6493 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6494 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6495 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6498 static struct pci_device_id ipr_pci_table[] __devinitdata = {
6499 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6500 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6501 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6502 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6503 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6504 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6505 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6506 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6507 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6508 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6509 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6510 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6511 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6512 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6513 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6514 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6515 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6516 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6517 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6518 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6519 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6520 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6521 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6522 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6523 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6524 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6525 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6528 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6530 static struct pci_driver ipr_driver = {
6532 .id_table = ipr_pci_table,
6534 .remove = ipr_remove,
6535 .shutdown = ipr_shutdown,
6539 * ipr_init - Module entry point
6542 * 0 on success / negative value on failure
6544 static int __init ipr_init(void)
6546 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6547 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6549 return pci_module_init(&ipr_driver);
6553 * ipr_exit - Module unload
6555 * Module unload entry point.
6560 static void __exit ipr_exit(void)
6562 pci_unregister_driver(&ipr_driver);
6565 module_init(ipr_init);
6566 module_exit(ipr_exit);