2 * ipr.c -- driver for IBM Power Linux RAID adapters
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 * Copyright (C) 2003, 2004 IBM Corporation
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 * This driver is used to control the following SCSI adapters:
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
50 * - Tagged command queuing
51 * - Adapter microcode download
53 * - SCSI device hot plug
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = 0;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static DEFINE_SPINLOCK(ipr_driver_lock);
97 /* This table describes the differences between DMA controller chips */
98 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
99 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .cache_line_size = 0x20,
103 .set_interrupt_mask_reg = 0x0022C,
104 .clr_interrupt_mask_reg = 0x00230,
105 .sense_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_reg = 0x00228,
107 .sense_interrupt_reg = 0x00224,
108 .ioarrin_reg = 0x00404,
109 .sense_uproc_interrupt_reg = 0x00214,
110 .set_uproc_interrupt_reg = 0x00214,
111 .clr_uproc_interrupt_reg = 0x00218
114 { /* Snipe and Scamp */
116 .cache_line_size = 0x20,
118 .set_interrupt_mask_reg = 0x00288,
119 .clr_interrupt_mask_reg = 0x0028C,
120 .sense_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_reg = 0x00284,
122 .sense_interrupt_reg = 0x00280,
123 .ioarrin_reg = 0x00504,
124 .sense_uproc_interrupt_reg = 0x00290,
125 .set_uproc_interrupt_reg = 0x00290,
126 .clr_uproc_interrupt_reg = 0x00294
131 static const struct ipr_chip_t ipr_chip[] = {
132 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
138 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
141 static int ipr_max_bus_speeds [] = {
142 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
146 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
147 module_param_named(max_speed, ipr_max_speed, uint, 0);
148 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
149 module_param_named(log_level, ipr_log_level, uint, 0);
150 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
151 module_param_named(testmode, ipr_testmode, int, 0);
152 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
153 module_param_named(fastfail, ipr_fastfail, int, 0);
154 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
155 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
156 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
157 module_param_named(enable_cache, ipr_enable_cache, int, 0);
158 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
159 module_param_named(debug, ipr_debug, int, 0);
160 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
161 MODULE_LICENSE("GPL");
162 MODULE_VERSION(IPR_DRIVER_VERSION);
164 /* A constant array of IOASCs/URCs/Error Messages */
166 struct ipr_error_table_t ipr_error_table[] = {
167 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
168 "8155: An unknown error was received"},
170 "Soft underlength error"},
172 "Command to be cancelled not found"},
174 "Qualified success"},
175 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
176 "FFFE: Soft device bus error recovered by the IOA"},
177 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
178 "4101: Soft device bus fabric error"},
179 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
180 "FFF9: Device sector reassign successful"},
181 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
182 "FFF7: Media error recovered by device rewrite procedures"},
183 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
184 "7001: IOA sector reassignment successful"},
185 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
186 "FFF9: Soft media error. Sector reassignment recommended"},
187 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
188 "FFF7: Media error recovered by IOA rewrite procedures"},
189 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
190 "FF3D: Soft PCI bus error recovered by the IOA"},
191 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
192 "FFF6: Device hardware error recovered by the IOA"},
193 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
194 "FFF6: Device hardware error recovered by the device"},
195 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
196 "FF3D: Soft IOA error recovered by the IOA"},
197 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
198 "FFFA: Undefined device response recovered by the IOA"},
199 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
200 "FFF6: Device bus error, message or command phase"},
201 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
202 "FFFE: Task Management Function failed"},
203 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
204 "FFF6: Failure prediction threshold exceeded"},
205 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
206 "8009: Impending cache battery pack failure"},
208 "34FF: Disk device format in progress"},
210 "Synchronization required"},
212 "No ready, IOA shutdown"},
214 "Not ready, IOA has been shutdown"},
215 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
216 "3020: Storage subsystem configuration error"},
218 "FFF5: Medium error, data unreadable, recommend reassign"},
220 "7000: Medium error, data unreadable, do not reassign"},
221 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
222 "FFF3: Disk media format bad"},
223 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
224 "3002: Addressed device failed to respond to selection"},
225 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
226 "3100: Device bus error"},
227 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
228 "3109: IOA timed out a device command"},
230 "3120: SCSI bus is not operational"},
231 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
232 "4100: Hard device bus fabric error"},
233 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
234 "9000: IOA reserved area data check"},
235 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
236 "9001: IOA reserved area invalid data pattern"},
237 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
238 "9002: IOA reserved area LRC error"},
239 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "102E: Out of alternate sectors for disk storage"},
241 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
242 "FFF4: Data transfer underlength error"},
243 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
244 "FFF4: Data transfer overlength error"},
245 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
246 "3400: Logical unit failure"},
247 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
248 "FFF4: Device microcode is corrupt"},
249 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
250 "8150: PCI bus error"},
252 "Unsupported device bus message received"},
253 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
254 "FFF4: Disk device problem"},
255 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
256 "8150: Permanent IOA failure"},
257 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
258 "3010: Disk device returned wrong response to IOA"},
259 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
260 "8151: IOA microcode error"},
262 "Device bus status error"},
263 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
264 "8157: IOA error requiring IOA reset to recover"},
266 "ATA device status error"},
268 "Message reject received from the device"},
269 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8008: A permanent cache battery pack failure occurred"},
271 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
272 "9090: Disk unit has been modified after the last known status"},
273 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
274 "9081: IOA detected device error"},
275 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
276 "9082: IOA detected device error"},
277 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
278 "3110: Device bus error, message or command phase"},
279 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
280 "3110: SAS Command / Task Management Function failed"},
281 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
282 "9091: Incorrect hardware configuration change has been detected"},
283 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
284 "9073: Invalid multi-adapter configuration"},
285 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
286 "4010: Incorrect connection between cascaded expanders"},
287 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
288 "4020: Connections exceed IOA design limits"},
289 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
290 "4030: Incorrect multipath connection"},
291 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
292 "4110: Unsupported enclosure function"},
293 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
294 "FFF4: Command to logical unit failed"},
296 "Illegal request, invalid request type or request packet"},
298 "Illegal request, invalid resource handle"},
300 "Illegal request, commands not allowed to this device"},
302 "Illegal request, command not allowed to a secondary adapter"},
304 "Illegal request, invalid field in parameter list"},
306 "Illegal request, parameter not supported"},
308 "Illegal request, parameter value invalid"},
310 "Illegal request, command sequence error"},
312 "Illegal request, dual adapter support not enabled"},
313 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
314 "9031: Array protection temporarily suspended, protection resuming"},
315 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
316 "9040: Array protection temporarily suspended, protection resuming"},
317 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
318 "3140: Device bus not ready to ready transition"},
319 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
320 "FFFB: SCSI bus was reset"},
322 "FFFE: SCSI bus transition to single ended"},
324 "FFFE: SCSI bus transition to LVD"},
325 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
326 "FFFB: SCSI bus was reset by another initiator"},
327 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
328 "3029: A device replacement has occurred"},
329 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
330 "9051: IOA cache data exists for a missing or failed device"},
331 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
332 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
333 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
334 "9025: Disk unit is not supported at its physical location"},
335 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
336 "3020: IOA detected a SCSI bus configuration error"},
337 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
338 "3150: SCSI bus configuration error"},
339 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9074: Asymmetric advanced function disk configuration"},
341 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
342 "4040: Incomplete multipath connection between IOA and enclosure"},
343 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
344 "4041: Incomplete multipath connection between enclosure and device"},
345 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
346 "9075: Incomplete multipath connection between IOA and remote IOA"},
347 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
348 "9076: Configuration error, missing remote IOA"},
349 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
350 "4050: Enclosure does not support a required multipath function"},
351 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
352 "9041: Array protection temporarily suspended"},
353 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9042: Corrupt array parity detected on specified device"},
355 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
356 "9030: Array no longer protected due to missing or failed disk unit"},
357 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
358 "9071: Link operational transition"},
359 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
360 "9072: Link not operational transition"},
361 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
362 "9032: Array exposed but still protected"},
363 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
364 "70DD: Device forced failed by disrupt device command"},
365 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
366 "4061: Multipath redundancy level got better"},
367 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
368 "4060: Multipath redundancy level got worse"},
370 "Failure due to other device"},
371 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
372 "9008: IOA does not support functions expected by devices"},
373 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
374 "9010: Cache data associated with attached devices cannot be found"},
375 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
376 "9011: Cache data belongs to devices other than those attached"},
377 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
378 "9020: Array missing 2 or more devices with only 1 device present"},
379 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9021: Array missing 2 or more devices with 2 or more devices present"},
381 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9022: Exposed array is missing a required device"},
383 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9023: Array member(s) not at required physical locations"},
385 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
386 "9024: Array not functional due to present hardware configuration"},
387 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
388 "9026: Array not functional due to present hardware configuration"},
389 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9027: Array is missing a device and parity is out of sync"},
391 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9028: Maximum number of arrays already exist"},
393 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
394 "9050: Required cache data cannot be located for a disk unit"},
395 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
396 "9052: Cache data exists for a device that has been modified"},
397 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9054: IOA resources not available due to previous problems"},
399 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9092: Disk unit requires initialization before use"},
401 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
402 "9029: Incorrect hardware configuration change has been detected"},
403 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
404 "9060: One or more disk pairs are missing from an array"},
405 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
406 "9061: One or more disks are missing from an array"},
407 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
408 "9062: One or more disks are missing from an array"},
409 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
410 "9063: Maximum number of functional arrays has been exceeded"},
412 "Aborted command, invalid descriptor"},
414 "Command terminated by host"}
417 static const struct ipr_ses_table_entry ipr_ses_table[] = {
418 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
419 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
420 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
421 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
422 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
423 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
424 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
425 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
426 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
427 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
429 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
430 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
434 * Function Prototypes
436 static int ipr_reset_alert(struct ipr_cmnd *);
437 static void ipr_process_ccn(struct ipr_cmnd *);
438 static void ipr_process_error(struct ipr_cmnd *);
439 static void ipr_reset_ioa_job(struct ipr_cmnd *);
440 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
441 enum ipr_shutdown_type);
443 #ifdef CONFIG_SCSI_IPR_TRACE
445 * ipr_trc_hook - Add a trace entry to the driver trace
446 * @ipr_cmd: ipr command struct
448 * @add_data: additional data
453 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
454 u8 type, u32 add_data)
456 struct ipr_trace_entry *trace_entry;
457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
459 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
460 trace_entry->time = jiffies;
461 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
462 trace_entry->type = type;
463 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
464 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
465 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
466 trace_entry->u.add_data = add_data;
469 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
473 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
474 * @ipr_cmd: ipr command struct
479 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
481 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
482 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
483 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
486 ioarcb->write_data_transfer_length = 0;
487 ioarcb->read_data_transfer_length = 0;
488 ioarcb->write_ioadl_len = 0;
489 ioarcb->read_ioadl_len = 0;
490 ioarcb->write_ioadl_addr =
491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
492 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
494 ioasa->residual_data_len = 0;
495 ioasa->u.gata.status = 0;
497 ipr_cmd->scsi_cmd = NULL;
499 ipr_cmd->sense_buffer[0] = 0;
500 ipr_cmd->dma_use_sg = 0;
504 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
505 * @ipr_cmd: ipr command struct
510 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
512 ipr_reinit_ipr_cmnd(ipr_cmd);
513 ipr_cmd->u.scratch = 0;
514 ipr_cmd->sibling = NULL;
515 init_timer(&ipr_cmd->timer);
519 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
520 * @ioa_cfg: ioa config struct
523 * pointer to ipr command struct
526 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
528 struct ipr_cmnd *ipr_cmd;
530 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
531 list_del(&ipr_cmd->queue);
532 ipr_init_ipr_cmnd(ipr_cmd);
538 * ipr_unmap_sglist - Unmap scatterlist if mapped
539 * @ioa_cfg: ioa config struct
540 * @ipr_cmd: ipr command struct
545 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
546 struct ipr_cmnd *ipr_cmd)
548 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
550 if (ipr_cmd->dma_use_sg) {
551 if (scsi_cmd->use_sg > 0) {
552 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
554 scsi_cmd->sc_data_direction);
556 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
557 scsi_cmd->request_bufflen,
558 scsi_cmd->sc_data_direction);
564 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
565 * @ioa_cfg: ioa config struct
566 * @clr_ints: interrupts to clear
568 * This function masks all interrupts on the adapter, then clears the
569 * interrupts specified in the mask
574 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
577 volatile u32 int_reg;
579 /* Stop new interrupts */
580 ioa_cfg->allow_interrupts = 0;
582 /* Set interrupt mask to stop all new interrupts */
583 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
585 /* Clear any pending interrupts */
586 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
587 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
591 * ipr_save_pcix_cmd_reg - Save PCI-X command register
592 * @ioa_cfg: ioa config struct
595 * 0 on success / -EIO on failure
597 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
599 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
601 if (pcix_cmd_reg == 0)
604 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
605 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
606 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
610 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
615 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
616 * @ioa_cfg: ioa config struct
619 * 0 on success / -EIO on failure
621 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
623 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
626 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
627 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
628 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
637 * ipr_sata_eh_done - done function for aborted SATA commands
638 * @ipr_cmd: ipr command struct
640 * This function is invoked for ops generated to SATA
641 * devices which are being aborted.
646 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
649 struct ata_queued_cmd *qc = ipr_cmd->qc;
650 struct ipr_sata_port *sata_port = qc->ap->private_data;
652 qc->err_mask |= AC_ERR_OTHER;
653 sata_port->ioasa.status |= ATA_BUSY;
654 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
659 * ipr_scsi_eh_done - mid-layer done function for aborted ops
660 * @ipr_cmd: ipr command struct
662 * This function is invoked by the interrupt handler for
663 * ops generated by the SCSI mid-layer which are being aborted.
668 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
670 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
671 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
673 scsi_cmd->result |= (DID_ERROR << 16);
675 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
676 scsi_cmd->scsi_done(scsi_cmd);
677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
681 * ipr_fail_all_ops - Fails all outstanding ops.
682 * @ioa_cfg: ioa config struct
684 * This function fails all outstanding ops.
689 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
691 struct ipr_cmnd *ipr_cmd, *temp;
694 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
695 list_del(&ipr_cmd->queue);
697 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
698 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
700 if (ipr_cmd->scsi_cmd)
701 ipr_cmd->done = ipr_scsi_eh_done;
702 else if (ipr_cmd->qc)
703 ipr_cmd->done = ipr_sata_eh_done;
705 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
706 del_timer(&ipr_cmd->timer);
707 ipr_cmd->done(ipr_cmd);
714 * ipr_do_req - Send driver initiated requests.
715 * @ipr_cmd: ipr command struct
716 * @done: done function
717 * @timeout_func: timeout function
718 * @timeout: timeout value
720 * This function sends the specified command to the adapter with the
721 * timeout given. The done function is invoked on command completion.
726 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
727 void (*done) (struct ipr_cmnd *),
728 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
730 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
732 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
734 ipr_cmd->done = done;
736 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
737 ipr_cmd->timer.expires = jiffies + timeout;
738 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
740 add_timer(&ipr_cmd->timer);
742 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
745 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
746 ioa_cfg->regs.ioarrin_reg);
750 * ipr_internal_cmd_done - Op done function for an internally generated op.
751 * @ipr_cmd: ipr command struct
753 * This function is the op done function for an internally generated,
754 * blocking op. It simply wakes the sleeping thread.
759 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
761 if (ipr_cmd->sibling)
762 ipr_cmd->sibling = NULL;
764 complete(&ipr_cmd->completion);
768 * ipr_send_blocking_cmd - Send command and sleep on its completion.
769 * @ipr_cmd: ipr command struct
770 * @timeout_func: function to invoke if command times out
776 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
777 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
780 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
782 init_completion(&ipr_cmd->completion);
783 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
785 spin_unlock_irq(ioa_cfg->host->host_lock);
786 wait_for_completion(&ipr_cmd->completion);
787 spin_lock_irq(ioa_cfg->host->host_lock);
791 * ipr_send_hcam - Send an HCAM to the adapter.
792 * @ioa_cfg: ioa config struct
794 * @hostrcb: hostrcb struct
796 * This function will send a Host Controlled Async command to the adapter.
797 * If HCAMs are currently not allowed to be issued to the adapter, it will
798 * place the hostrcb on the free queue.
803 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
804 struct ipr_hostrcb *hostrcb)
806 struct ipr_cmnd *ipr_cmd;
807 struct ipr_ioarcb *ioarcb;
809 if (ioa_cfg->allow_cmds) {
810 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
811 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
812 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
814 ipr_cmd->u.hostrcb = hostrcb;
815 ioarcb = &ipr_cmd->ioarcb;
817 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
818 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
819 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
820 ioarcb->cmd_pkt.cdb[1] = type;
821 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
822 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
824 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
825 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
826 ipr_cmd->ioadl[0].flags_and_data_len =
827 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
828 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
830 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
831 ipr_cmd->done = ipr_process_ccn;
833 ipr_cmd->done = ipr_process_error;
835 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
838 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
839 ioa_cfg->regs.ioarrin_reg);
841 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
846 * ipr_init_res_entry - Initialize a resource entry struct.
847 * @res: resource entry struct
852 static void ipr_init_res_entry(struct ipr_resource_entry *res)
854 res->needs_sync_complete = 0;
857 res->del_from_ml = 0;
858 res->resetting_device = 0;
860 res->sata_port = NULL;
864 * ipr_handle_config_change - Handle a config change from the adapter
865 * @ioa_cfg: ioa config struct
871 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
872 struct ipr_hostrcb *hostrcb)
874 struct ipr_resource_entry *res = NULL;
875 struct ipr_config_table_entry *cfgte;
878 cfgte = &hostrcb->hcam.u.ccn.cfgte;
880 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
881 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
882 sizeof(cfgte->res_addr))) {
889 if (list_empty(&ioa_cfg->free_res_q)) {
890 ipr_send_hcam(ioa_cfg,
891 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
896 res = list_entry(ioa_cfg->free_res_q.next,
897 struct ipr_resource_entry, queue);
899 list_del(&res->queue);
900 ipr_init_res_entry(res);
901 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
904 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
906 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
908 res->del_from_ml = 1;
909 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
910 if (ioa_cfg->allow_ml_add_del)
911 schedule_work(&ioa_cfg->work_q);
913 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
914 } else if (!res->sdev) {
916 if (ioa_cfg->allow_ml_add_del)
917 schedule_work(&ioa_cfg->work_q);
920 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
924 * ipr_process_ccn - Op done function for a CCN.
925 * @ipr_cmd: ipr command struct
927 * This function is the op done function for a configuration
928 * change notification host controlled async from the adapter.
933 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
935 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
936 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
937 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
939 list_del(&hostrcb->queue);
940 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
943 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
944 dev_err(&ioa_cfg->pdev->dev,
945 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
947 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
949 ipr_handle_config_change(ioa_cfg, hostrcb);
954 * ipr_log_vpd - Log the passed VPD to the error log.
955 * @vpd: vendor/product id/sn struct
960 static void ipr_log_vpd(struct ipr_vpd *vpd)
962 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
963 + IPR_SERIAL_NUM_LEN];
965 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
966 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
968 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
969 ipr_err("Vendor/Product ID: %s\n", buffer);
971 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
972 buffer[IPR_SERIAL_NUM_LEN] = '\0';
973 ipr_err(" Serial Number: %s\n", buffer);
977 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
978 * @vpd: vendor/product id/sn/wwn struct
983 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
985 ipr_log_vpd(&vpd->vpd);
986 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
987 be32_to_cpu(vpd->wwid[1]));
991 * ipr_log_enhanced_cache_error - Log a cache error.
992 * @ioa_cfg: ioa config struct
993 * @hostrcb: hostrcb struct
998 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
999 struct ipr_hostrcb *hostrcb)
1001 struct ipr_hostrcb_type_12_error *error =
1002 &hostrcb->hcam.u.error.u.type_12_error;
1004 ipr_err("-----Current Configuration-----\n");
1005 ipr_err("Cache Directory Card Information:\n");
1006 ipr_log_ext_vpd(&error->ioa_vpd);
1007 ipr_err("Adapter Card Information:\n");
1008 ipr_log_ext_vpd(&error->cfc_vpd);
1010 ipr_err("-----Expected Configuration-----\n");
1011 ipr_err("Cache Directory Card Information:\n");
1012 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1013 ipr_err("Adapter Card Information:\n");
1014 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1016 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1017 be32_to_cpu(error->ioa_data[0]),
1018 be32_to_cpu(error->ioa_data[1]),
1019 be32_to_cpu(error->ioa_data[2]));
1023 * ipr_log_cache_error - Log a cache error.
1024 * @ioa_cfg: ioa config struct
1025 * @hostrcb: hostrcb struct
1030 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1031 struct ipr_hostrcb *hostrcb)
1033 struct ipr_hostrcb_type_02_error *error =
1034 &hostrcb->hcam.u.error.u.type_02_error;
1036 ipr_err("-----Current Configuration-----\n");
1037 ipr_err("Cache Directory Card Information:\n");
1038 ipr_log_vpd(&error->ioa_vpd);
1039 ipr_err("Adapter Card Information:\n");
1040 ipr_log_vpd(&error->cfc_vpd);
1042 ipr_err("-----Expected Configuration-----\n");
1043 ipr_err("Cache Directory Card Information:\n");
1044 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1045 ipr_err("Adapter Card Information:\n");
1046 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1048 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1049 be32_to_cpu(error->ioa_data[0]),
1050 be32_to_cpu(error->ioa_data[1]),
1051 be32_to_cpu(error->ioa_data[2]));
1055 * ipr_log_enhanced_config_error - Log a configuration error.
1056 * @ioa_cfg: ioa config struct
1057 * @hostrcb: hostrcb struct
1062 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1063 struct ipr_hostrcb *hostrcb)
1065 int errors_logged, i;
1066 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1067 struct ipr_hostrcb_type_13_error *error;
1069 error = &hostrcb->hcam.u.error.u.type_13_error;
1070 errors_logged = be32_to_cpu(error->errors_logged);
1072 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1073 be32_to_cpu(error->errors_detected), errors_logged);
1075 dev_entry = error->dev;
1077 for (i = 0; i < errors_logged; i++, dev_entry++) {
1080 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1081 ipr_log_ext_vpd(&dev_entry->vpd);
1083 ipr_err("-----New Device Information-----\n");
1084 ipr_log_ext_vpd(&dev_entry->new_vpd);
1086 ipr_err("Cache Directory Card Information:\n");
1087 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1089 ipr_err("Adapter Card Information:\n");
1090 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1095 * ipr_log_config_error - Log a configuration error.
1096 * @ioa_cfg: ioa config struct
1097 * @hostrcb: hostrcb struct
1102 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1103 struct ipr_hostrcb *hostrcb)
1105 int errors_logged, i;
1106 struct ipr_hostrcb_device_data_entry *dev_entry;
1107 struct ipr_hostrcb_type_03_error *error;
1109 error = &hostrcb->hcam.u.error.u.type_03_error;
1110 errors_logged = be32_to_cpu(error->errors_logged);
1112 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1113 be32_to_cpu(error->errors_detected), errors_logged);
1115 dev_entry = error->dev;
1117 for (i = 0; i < errors_logged; i++, dev_entry++) {
1120 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1121 ipr_log_vpd(&dev_entry->vpd);
1123 ipr_err("-----New Device Information-----\n");
1124 ipr_log_vpd(&dev_entry->new_vpd);
1126 ipr_err("Cache Directory Card Information:\n");
1127 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1129 ipr_err("Adapter Card Information:\n");
1130 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1132 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1133 be32_to_cpu(dev_entry->ioa_data[0]),
1134 be32_to_cpu(dev_entry->ioa_data[1]),
1135 be32_to_cpu(dev_entry->ioa_data[2]),
1136 be32_to_cpu(dev_entry->ioa_data[3]),
1137 be32_to_cpu(dev_entry->ioa_data[4]));
1142 * ipr_log_enhanced_array_error - Log an array configuration error.
1143 * @ioa_cfg: ioa config struct
1144 * @hostrcb: hostrcb struct
1149 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1150 struct ipr_hostrcb *hostrcb)
1153 struct ipr_hostrcb_type_14_error *error;
1154 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1155 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1157 error = &hostrcb->hcam.u.error.u.type_14_error;
1161 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1162 error->protection_level,
1163 ioa_cfg->host->host_no,
1164 error->last_func_vset_res_addr.bus,
1165 error->last_func_vset_res_addr.target,
1166 error->last_func_vset_res_addr.lun);
1170 array_entry = error->array_member;
1171 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1172 sizeof(error->array_member));
1174 for (i = 0; i < num_entries; i++, array_entry++) {
1175 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1178 if (be32_to_cpu(error->exposed_mode_adn) == i)
1179 ipr_err("Exposed Array Member %d:\n", i);
1181 ipr_err("Array Member %d:\n", i);
1183 ipr_log_ext_vpd(&array_entry->vpd);
1184 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1185 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1186 "Expected Location");
1193 * ipr_log_array_error - Log an array configuration error.
1194 * @ioa_cfg: ioa config struct
1195 * @hostrcb: hostrcb struct
1200 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1201 struct ipr_hostrcb *hostrcb)
1204 struct ipr_hostrcb_type_04_error *error;
1205 struct ipr_hostrcb_array_data_entry *array_entry;
1206 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1208 error = &hostrcb->hcam.u.error.u.type_04_error;
1212 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1213 error->protection_level,
1214 ioa_cfg->host->host_no,
1215 error->last_func_vset_res_addr.bus,
1216 error->last_func_vset_res_addr.target,
1217 error->last_func_vset_res_addr.lun);
1221 array_entry = error->array_member;
1223 for (i = 0; i < 18; i++) {
1224 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1227 if (be32_to_cpu(error->exposed_mode_adn) == i)
1228 ipr_err("Exposed Array Member %d:\n", i);
1230 ipr_err("Array Member %d:\n", i);
1232 ipr_log_vpd(&array_entry->vpd);
1234 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1235 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1236 "Expected Location");
1241 array_entry = error->array_member2;
1248 * ipr_log_hex_data - Log additional hex IOA error data.
1249 * @ioa_cfg: ioa config struct
1250 * @data: IOA error data
1256 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1263 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1264 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1266 for (i = 0; i < len / 4; i += 4) {
1267 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1268 be32_to_cpu(data[i]),
1269 be32_to_cpu(data[i+1]),
1270 be32_to_cpu(data[i+2]),
1271 be32_to_cpu(data[i+3]));
1276 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1277 * @ioa_cfg: ioa config struct
1278 * @hostrcb: hostrcb struct
1283 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1284 struct ipr_hostrcb *hostrcb)
1286 struct ipr_hostrcb_type_17_error *error;
1288 error = &hostrcb->hcam.u.error.u.type_17_error;
1289 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1291 ipr_err("%s\n", error->failure_reason);
1292 ipr_err("Remote Adapter VPD:\n");
1293 ipr_log_ext_vpd(&error->vpd);
1294 ipr_log_hex_data(ioa_cfg, error->data,
1295 be32_to_cpu(hostrcb->hcam.length) -
1296 (offsetof(struct ipr_hostrcb_error, u) +
1297 offsetof(struct ipr_hostrcb_type_17_error, data)));
1301 * ipr_log_dual_ioa_error - Log a dual adapter error.
1302 * @ioa_cfg: ioa config struct
1303 * @hostrcb: hostrcb struct
1308 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1309 struct ipr_hostrcb *hostrcb)
1311 struct ipr_hostrcb_type_07_error *error;
1313 error = &hostrcb->hcam.u.error.u.type_07_error;
1314 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1316 ipr_err("%s\n", error->failure_reason);
1317 ipr_err("Remote Adapter VPD:\n");
1318 ipr_log_vpd(&error->vpd);
1319 ipr_log_hex_data(ioa_cfg, error->data,
1320 be32_to_cpu(hostrcb->hcam.length) -
1321 (offsetof(struct ipr_hostrcb_error, u) +
1322 offsetof(struct ipr_hostrcb_type_07_error, data)));
1325 static const struct {
1328 } path_active_desc[] = {
1329 { IPR_PATH_NO_INFO, "Path" },
1330 { IPR_PATH_ACTIVE, "Active path" },
1331 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1334 static const struct {
1337 } path_state_desc[] = {
1338 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1339 { IPR_PATH_HEALTHY, "is healthy" },
1340 { IPR_PATH_DEGRADED, "is degraded" },
1341 { IPR_PATH_FAILED, "is failed" }
1345 * ipr_log_fabric_path - Log a fabric path error
1346 * @hostrcb: hostrcb struct
1347 * @fabric: fabric descriptor
1352 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1353 struct ipr_hostrcb_fabric_desc *fabric)
1356 u8 path_state = fabric->path_state;
1357 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1358 u8 state = path_state & IPR_PATH_STATE_MASK;
1360 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1361 if (path_active_desc[i].active != active)
1364 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1365 if (path_state_desc[j].state != state)
1368 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1369 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1370 path_active_desc[i].desc, path_state_desc[j].desc,
1372 } else if (fabric->cascaded_expander == 0xff) {
1373 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1374 path_active_desc[i].desc, path_state_desc[j].desc,
1375 fabric->ioa_port, fabric->phy);
1376 } else if (fabric->phy == 0xff) {
1377 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1378 path_active_desc[i].desc, path_state_desc[j].desc,
1379 fabric->ioa_port, fabric->cascaded_expander);
1381 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1382 path_active_desc[i].desc, path_state_desc[j].desc,
1383 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1389 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1390 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1393 static const struct {
1396 } path_type_desc[] = {
1397 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1398 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1399 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1400 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1403 static const struct {
1406 } path_status_desc[] = {
1407 { IPR_PATH_CFG_NO_PROB, "Functional" },
1408 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1409 { IPR_PATH_CFG_FAILED, "Failed" },
1410 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1411 { IPR_PATH_NOT_DETECTED, "Missing" },
1412 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1415 static const char *link_rate[] = {
1418 "phy reset problem",
1435 * ipr_log_path_elem - Log a fabric path element.
1436 * @hostrcb: hostrcb struct
1437 * @cfg: fabric path element struct
1442 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1443 struct ipr_hostrcb_config_element *cfg)
1446 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1447 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1449 if (type == IPR_PATH_CFG_NOT_EXIST)
1452 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1453 if (path_type_desc[i].type != type)
1456 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1457 if (path_status_desc[j].status != status)
1460 if (type == IPR_PATH_CFG_IOA_PORT) {
1461 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1462 path_status_desc[j].desc, path_type_desc[i].desc,
1463 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1464 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1466 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1467 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1468 path_status_desc[j].desc, path_type_desc[i].desc,
1469 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1470 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1471 } else if (cfg->cascaded_expander == 0xff) {
1472 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1473 "WWN=%08X%08X\n", path_status_desc[j].desc,
1474 path_type_desc[i].desc, cfg->phy,
1475 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1476 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1477 } else if (cfg->phy == 0xff) {
1478 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1479 "WWN=%08X%08X\n", path_status_desc[j].desc,
1480 path_type_desc[i].desc, cfg->cascaded_expander,
1481 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1482 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1484 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1485 "WWN=%08X%08X\n", path_status_desc[j].desc,
1486 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1487 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1488 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1495 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1496 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1497 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1498 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1502 * ipr_log_fabric_error - Log a fabric error.
1503 * @ioa_cfg: ioa config struct
1504 * @hostrcb: hostrcb struct
1509 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1510 struct ipr_hostrcb *hostrcb)
1512 struct ipr_hostrcb_type_20_error *error;
1513 struct ipr_hostrcb_fabric_desc *fabric;
1514 struct ipr_hostrcb_config_element *cfg;
1517 error = &hostrcb->hcam.u.error.u.type_20_error;
1518 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1519 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1521 add_len = be32_to_cpu(hostrcb->hcam.length) -
1522 (offsetof(struct ipr_hostrcb_error, u) +
1523 offsetof(struct ipr_hostrcb_type_20_error, desc));
1525 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1526 ipr_log_fabric_path(hostrcb, fabric);
1527 for_each_fabric_cfg(fabric, cfg)
1528 ipr_log_path_elem(hostrcb, cfg);
1530 add_len -= be16_to_cpu(fabric->length);
1531 fabric = (struct ipr_hostrcb_fabric_desc *)
1532 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1535 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1539 * ipr_log_generic_error - Log an adapter error.
1540 * @ioa_cfg: ioa config struct
1541 * @hostrcb: hostrcb struct
1546 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1547 struct ipr_hostrcb *hostrcb)
1549 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1550 be32_to_cpu(hostrcb->hcam.length));
1554 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1557 * This function will return the index of into the ipr_error_table
1558 * for the specified IOASC. If the IOASC is not in the table,
1559 * 0 will be returned, which points to the entry used for unknown errors.
1562 * index into the ipr_error_table
1564 static u32 ipr_get_error(u32 ioasc)
1568 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1569 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1576 * ipr_handle_log_data - Log an adapter error.
1577 * @ioa_cfg: ioa config struct
1578 * @hostrcb: hostrcb struct
1580 * This function logs an adapter error to the system.
1585 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1586 struct ipr_hostrcb *hostrcb)
1591 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1594 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1595 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1597 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1599 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1600 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1601 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1602 scsi_report_bus_reset(ioa_cfg->host,
1603 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1606 error_index = ipr_get_error(ioasc);
1608 if (!ipr_error_table[error_index].log_hcam)
1611 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1613 /* Set indication we have logged an error */
1614 ioa_cfg->errors_logged++;
1616 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1618 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1619 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1621 switch (hostrcb->hcam.overlay_id) {
1622 case IPR_HOST_RCB_OVERLAY_ID_2:
1623 ipr_log_cache_error(ioa_cfg, hostrcb);
1625 case IPR_HOST_RCB_OVERLAY_ID_3:
1626 ipr_log_config_error(ioa_cfg, hostrcb);
1628 case IPR_HOST_RCB_OVERLAY_ID_4:
1629 case IPR_HOST_RCB_OVERLAY_ID_6:
1630 ipr_log_array_error(ioa_cfg, hostrcb);
1632 case IPR_HOST_RCB_OVERLAY_ID_7:
1633 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1635 case IPR_HOST_RCB_OVERLAY_ID_12:
1636 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1638 case IPR_HOST_RCB_OVERLAY_ID_13:
1639 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1641 case IPR_HOST_RCB_OVERLAY_ID_14:
1642 case IPR_HOST_RCB_OVERLAY_ID_16:
1643 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1645 case IPR_HOST_RCB_OVERLAY_ID_17:
1646 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1648 case IPR_HOST_RCB_OVERLAY_ID_20:
1649 ipr_log_fabric_error(ioa_cfg, hostrcb);
1651 case IPR_HOST_RCB_OVERLAY_ID_1:
1652 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1654 ipr_log_generic_error(ioa_cfg, hostrcb);
1660 * ipr_process_error - Op done function for an adapter error log.
1661 * @ipr_cmd: ipr command struct
1663 * This function is the op done function for an error log host
1664 * controlled async from the adapter. It will log the error and
1665 * send the HCAM back to the adapter.
1670 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1673 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1674 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1676 list_del(&hostrcb->queue);
1677 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1680 ipr_handle_log_data(ioa_cfg, hostrcb);
1681 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1682 dev_err(&ioa_cfg->pdev->dev,
1683 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1686 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1690 * ipr_timeout - An internally generated op has timed out.
1691 * @ipr_cmd: ipr command struct
1693 * This function blocks host requests and initiates an
1699 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1701 unsigned long lock_flags = 0;
1702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1707 ioa_cfg->errors_logged++;
1708 dev_err(&ioa_cfg->pdev->dev,
1709 "Adapter being reset due to command timeout.\n");
1711 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1712 ioa_cfg->sdt_state = GET_DUMP;
1714 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1715 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1722 * ipr_oper_timeout - Adapter timed out transitioning to operational
1723 * @ipr_cmd: ipr command struct
1725 * This function blocks host requests and initiates an
1731 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1733 unsigned long lock_flags = 0;
1734 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1737 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1739 ioa_cfg->errors_logged++;
1740 dev_err(&ioa_cfg->pdev->dev,
1741 "Adapter timed out transitioning to operational.\n");
1743 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1744 ioa_cfg->sdt_state = GET_DUMP;
1746 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1748 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1749 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1757 * ipr_reset_reload - Reset/Reload the IOA
1758 * @ioa_cfg: ioa config struct
1759 * @shutdown_type: shutdown type
1761 * This function resets the adapter and re-initializes it.
1762 * This function assumes that all new host commands have been stopped.
1766 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1767 enum ipr_shutdown_type shutdown_type)
1769 if (!ioa_cfg->in_reset_reload)
1770 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1772 spin_unlock_irq(ioa_cfg->host->host_lock);
1773 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1774 spin_lock_irq(ioa_cfg->host->host_lock);
1776 /* If we got hit with a host reset while we were already resetting
1777 the adapter for some reason, and the reset failed. */
1778 if (ioa_cfg->ioa_is_dead) {
1787 * ipr_find_ses_entry - Find matching SES in SES table
1788 * @res: resource entry struct of SES
1791 * pointer to SES table entry / NULL on failure
1793 static const struct ipr_ses_table_entry *
1794 ipr_find_ses_entry(struct ipr_resource_entry *res)
1797 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1799 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1800 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1801 if (ste->compare_product_id_byte[j] == 'X') {
1802 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1810 if (matches == IPR_PROD_ID_LEN)
1818 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1819 * @ioa_cfg: ioa config struct
1821 * @bus_width: bus width
1824 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1825 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1826 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1827 * max 160MHz = max 320MB/sec).
1829 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1831 struct ipr_resource_entry *res;
1832 const struct ipr_ses_table_entry *ste;
1833 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1835 /* Loop through each config table entry in the config table buffer */
1836 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1837 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1840 if (bus != res->cfgte.res_addr.bus)
1843 if (!(ste = ipr_find_ses_entry(res)))
1846 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1849 return max_xfer_rate;
1853 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1854 * @ioa_cfg: ioa config struct
1855 * @max_delay: max delay in micro-seconds to wait
1857 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1860 * 0 on success / other on failure
1862 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1864 volatile u32 pcii_reg;
1867 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1868 while (delay < max_delay) {
1869 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1871 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1874 /* udelay cannot be used if delay is more than a few milliseconds */
1875 if ((delay / 1000) > MAX_UDELAY_MS)
1876 mdelay(delay / 1000);
1886 * ipr_get_ldump_data_section - Dump IOA memory
1887 * @ioa_cfg: ioa config struct
1888 * @start_addr: adapter address to dump
1889 * @dest: destination kernel buffer
1890 * @length_in_words: length to dump in 4 byte words
1893 * 0 on success / -EIO on failure
1895 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1897 __be32 *dest, u32 length_in_words)
1899 volatile u32 temp_pcii_reg;
1902 /* Write IOA interrupt reg starting LDUMP state */
1903 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1904 ioa_cfg->regs.set_uproc_interrupt_reg);
1906 /* Wait for IO debug acknowledge */
1907 if (ipr_wait_iodbg_ack(ioa_cfg,
1908 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1909 dev_err(&ioa_cfg->pdev->dev,
1910 "IOA dump long data transfer timeout\n");
1914 /* Signal LDUMP interlocked - clear IO debug ack */
1915 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1916 ioa_cfg->regs.clr_interrupt_reg);
1918 /* Write Mailbox with starting address */
1919 writel(start_addr, ioa_cfg->ioa_mailbox);
1921 /* Signal address valid - clear IOA Reset alert */
1922 writel(IPR_UPROCI_RESET_ALERT,
1923 ioa_cfg->regs.clr_uproc_interrupt_reg);
1925 for (i = 0; i < length_in_words; i++) {
1926 /* Wait for IO debug acknowledge */
1927 if (ipr_wait_iodbg_ack(ioa_cfg,
1928 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1929 dev_err(&ioa_cfg->pdev->dev,
1930 "IOA dump short data transfer timeout\n");
1934 /* Read data from mailbox and increment destination pointer */
1935 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1938 /* For all but the last word of data, signal data received */
1939 if (i < (length_in_words - 1)) {
1940 /* Signal dump data received - Clear IO debug Ack */
1941 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1942 ioa_cfg->regs.clr_interrupt_reg);
1946 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1947 writel(IPR_UPROCI_RESET_ALERT,
1948 ioa_cfg->regs.set_uproc_interrupt_reg);
1950 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1951 ioa_cfg->regs.clr_uproc_interrupt_reg);
1953 /* Signal dump data received - Clear IO debug Ack */
1954 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1955 ioa_cfg->regs.clr_interrupt_reg);
1957 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1958 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1960 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1962 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1972 #ifdef CONFIG_SCSI_IPR_DUMP
1974 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1975 * @ioa_cfg: ioa config struct
1976 * @pci_address: adapter address
1977 * @length: length of data to copy
1979 * Copy data from PCI adapter to kernel buffer.
1980 * Note: length MUST be a 4 byte multiple
1982 * 0 on success / other on failure
1984 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1985 unsigned long pci_address, u32 length)
1987 int bytes_copied = 0;
1988 int cur_len, rc, rem_len, rem_page_len;
1990 unsigned long lock_flags = 0;
1991 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1993 while (bytes_copied < length &&
1994 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1995 if (ioa_dump->page_offset >= PAGE_SIZE ||
1996 ioa_dump->page_offset == 0) {
1997 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2001 return bytes_copied;
2004 ioa_dump->page_offset = 0;
2005 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2006 ioa_dump->next_page_index++;
2008 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2010 rem_len = length - bytes_copied;
2011 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2012 cur_len = min(rem_len, rem_page_len);
2014 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2015 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2018 rc = ipr_get_ldump_data_section(ioa_cfg,
2019 pci_address + bytes_copied,
2020 &page[ioa_dump->page_offset / 4],
2021 (cur_len / sizeof(u32)));
2023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2026 ioa_dump->page_offset += cur_len;
2027 bytes_copied += cur_len;
2035 return bytes_copied;
2039 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2040 * @hdr: dump entry header struct
2045 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2047 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2049 hdr->offset = sizeof(*hdr);
2050 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2054 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2055 * @ioa_cfg: ioa config struct
2056 * @driver_dump: driver dump struct
2061 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2062 struct ipr_driver_dump *driver_dump)
2064 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2066 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2067 driver_dump->ioa_type_entry.hdr.len =
2068 sizeof(struct ipr_dump_ioa_type_entry) -
2069 sizeof(struct ipr_dump_entry_header);
2070 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2071 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2072 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2073 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2074 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2075 ucode_vpd->minor_release[1];
2076 driver_dump->hdr.num_entries++;
2080 * ipr_dump_version_data - Fill in the driver version in the dump.
2081 * @ioa_cfg: ioa config struct
2082 * @driver_dump: driver dump struct
2087 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2088 struct ipr_driver_dump *driver_dump)
2090 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2091 driver_dump->version_entry.hdr.len =
2092 sizeof(struct ipr_dump_version_entry) -
2093 sizeof(struct ipr_dump_entry_header);
2094 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2095 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2096 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2097 driver_dump->hdr.num_entries++;
2101 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2102 * @ioa_cfg: ioa config struct
2103 * @driver_dump: driver dump struct
2108 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2109 struct ipr_driver_dump *driver_dump)
2111 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2112 driver_dump->trace_entry.hdr.len =
2113 sizeof(struct ipr_dump_trace_entry) -
2114 sizeof(struct ipr_dump_entry_header);
2115 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2116 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2117 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2118 driver_dump->hdr.num_entries++;
2122 * ipr_dump_location_data - Fill in the IOA location in the dump.
2123 * @ioa_cfg: ioa config struct
2124 * @driver_dump: driver dump struct
2129 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2130 struct ipr_driver_dump *driver_dump)
2132 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2133 driver_dump->location_entry.hdr.len =
2134 sizeof(struct ipr_dump_location_entry) -
2135 sizeof(struct ipr_dump_entry_header);
2136 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2137 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2138 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2139 driver_dump->hdr.num_entries++;
2143 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2144 * @ioa_cfg: ioa config struct
2145 * @dump: dump struct
2150 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2152 unsigned long start_addr, sdt_word;
2153 unsigned long lock_flags = 0;
2154 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2155 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2156 u32 num_entries, start_off, end_off;
2157 u32 bytes_to_copy, bytes_copied, rc;
2158 struct ipr_sdt *sdt;
2163 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2165 if (ioa_cfg->sdt_state != GET_DUMP) {
2166 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2170 start_addr = readl(ioa_cfg->ioa_mailbox);
2172 if (!ipr_sdt_is_fmt2(start_addr)) {
2173 dev_err(&ioa_cfg->pdev->dev,
2174 "Invalid dump table format: %lx\n", start_addr);
2175 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2179 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2181 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2183 /* Initialize the overall dump header */
2184 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2185 driver_dump->hdr.num_entries = 1;
2186 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2187 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2188 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2189 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2191 ipr_dump_version_data(ioa_cfg, driver_dump);
2192 ipr_dump_location_data(ioa_cfg, driver_dump);
2193 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2194 ipr_dump_trace_data(ioa_cfg, driver_dump);
2196 /* Update dump_header */
2197 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2199 /* IOA Dump entry */
2200 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2201 ioa_dump->format = IPR_SDT_FMT2;
2202 ioa_dump->hdr.len = 0;
2203 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2204 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2206 /* First entries in sdt are actually a list of dump addresses and
2207 lengths to gather the real dump data. sdt represents the pointer
2208 to the ioa generated dump table. Dump data will be extracted based
2209 on entries in this table */
2210 sdt = &ioa_dump->sdt;
2212 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2213 sizeof(struct ipr_sdt) / sizeof(__be32));
2215 /* Smart Dump table is ready to use and the first entry is valid */
2216 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2217 dev_err(&ioa_cfg->pdev->dev,
2218 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2219 rc, be32_to_cpu(sdt->hdr.state));
2220 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2221 ioa_cfg->sdt_state = DUMP_OBTAINED;
2222 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2226 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2228 if (num_entries > IPR_NUM_SDT_ENTRIES)
2229 num_entries = IPR_NUM_SDT_ENTRIES;
2231 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2233 for (i = 0; i < num_entries; i++) {
2234 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2239 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2240 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2241 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2242 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2244 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2245 bytes_to_copy = end_off - start_off;
2246 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2247 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2251 /* Copy data from adapter to driver buffers */
2252 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2255 ioa_dump->hdr.len += bytes_copied;
2257 if (bytes_copied != bytes_to_copy) {
2258 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2265 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2267 /* Update dump_header */
2268 driver_dump->hdr.len += ioa_dump->hdr.len;
2270 ioa_cfg->sdt_state = DUMP_OBTAINED;
2275 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2279 * ipr_release_dump - Free adapter dump memory
2280 * @kref: kref struct
2285 static void ipr_release_dump(struct kref *kref)
2287 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2288 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2289 unsigned long lock_flags = 0;
2293 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2294 ioa_cfg->dump = NULL;
2295 ioa_cfg->sdt_state = INACTIVE;
2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2298 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2299 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2306 * ipr_worker_thread - Worker thread
2307 * @work: ioa config struct
2309 * Called at task level from a work thread. This function takes care
2310 * of adding and removing device from the mid-layer as configuration
2311 * changes are detected by the adapter.
2316 static void ipr_worker_thread(struct work_struct *work)
2318 unsigned long lock_flags;
2319 struct ipr_resource_entry *res;
2320 struct scsi_device *sdev;
2321 struct ipr_dump *dump;
2322 struct ipr_ioa_cfg *ioa_cfg =
2323 container_of(work, struct ipr_ioa_cfg, work_q);
2324 u8 bus, target, lun;
2328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2330 if (ioa_cfg->sdt_state == GET_DUMP) {
2331 dump = ioa_cfg->dump;
2333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2336 kref_get(&dump->kref);
2337 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2338 ipr_get_ioa_dump(ioa_cfg, dump);
2339 kref_put(&dump->kref, ipr_release_dump);
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2343 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2351 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2352 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2356 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2357 if (res->del_from_ml && res->sdev) {
2360 if (!scsi_device_get(sdev)) {
2361 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2363 scsi_remove_device(sdev);
2364 scsi_device_put(sdev);
2365 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2372 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2373 if (res->add_to_ml) {
2374 bus = res->cfgte.res_addr.bus;
2375 target = res->cfgte.res_addr.target;
2376 lun = res->cfgte.res_addr.lun;
2378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2379 scsi_add_device(ioa_cfg->host, bus, target, lun);
2380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2390 #ifdef CONFIG_SCSI_IPR_TRACE
2392 * ipr_read_trace - Dump the adapter trace
2393 * @kobj: kobject struct
2396 * @count: buffer size
2399 * number of bytes printed to buffer
2401 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2402 loff_t off, size_t count)
2404 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2405 struct Scsi_Host *shost = class_to_shost(cdev);
2406 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2407 unsigned long lock_flags = 0;
2408 int size = IPR_TRACE_SIZE;
2409 char *src = (char *)ioa_cfg->trace;
2413 if (off + count > size) {
2418 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2419 memcpy(buf, &src[off], count);
2420 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2424 static struct bin_attribute ipr_trace_attr = {
2430 .read = ipr_read_trace,
2434 static const struct {
2435 enum ipr_cache_state state;
2437 } cache_state [] = {
2438 { CACHE_NONE, "none" },
2439 { CACHE_DISABLED, "disabled" },
2440 { CACHE_ENABLED, "enabled" }
2444 * ipr_show_write_caching - Show the write caching attribute
2445 * @class_dev: class device struct
2449 * number of bytes printed to buffer
2451 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2453 struct Scsi_Host *shost = class_to_shost(class_dev);
2454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2455 unsigned long lock_flags = 0;
2458 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2459 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2460 if (cache_state[i].state == ioa_cfg->cache_state) {
2461 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 * ipr_store_write_caching - Enable/disable adapter write cache
2472 * @class_dev: class_device struct
2474 * @count: buffer size
2476 * This function will enable/disable adapter write cache.
2479 * count on success / other on failure
2481 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2482 const char *buf, size_t count)
2484 struct Scsi_Host *shost = class_to_shost(class_dev);
2485 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2486 unsigned long lock_flags = 0;
2487 enum ipr_cache_state new_state = CACHE_INVALID;
2490 if (!capable(CAP_SYS_ADMIN))
2492 if (ioa_cfg->cache_state == CACHE_NONE)
2495 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2496 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2497 new_state = cache_state[i].state;
2502 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2506 if (ioa_cfg->cache_state == new_state) {
2507 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2511 ioa_cfg->cache_state = new_state;
2512 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2513 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2514 if (!ioa_cfg->in_reset_reload)
2515 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2517 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2522 static struct class_device_attribute ipr_ioa_cache_attr = {
2524 .name = "write_cache",
2525 .mode = S_IRUGO | S_IWUSR,
2527 .show = ipr_show_write_caching,
2528 .store = ipr_store_write_caching
2532 * ipr_show_fw_version - Show the firmware version
2533 * @class_dev: class device struct
2537 * number of bytes printed to buffer
2539 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2541 struct Scsi_Host *shost = class_to_shost(class_dev);
2542 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2543 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2544 unsigned long lock_flags = 0;
2547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2548 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2549 ucode_vpd->major_release, ucode_vpd->card_type,
2550 ucode_vpd->minor_release[0],
2551 ucode_vpd->minor_release[1]);
2552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2556 static struct class_device_attribute ipr_fw_version_attr = {
2558 .name = "fw_version",
2561 .show = ipr_show_fw_version,
2565 * ipr_show_log_level - Show the adapter's error logging level
2566 * @class_dev: class device struct
2570 * number of bytes printed to buffer
2572 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2574 struct Scsi_Host *shost = class_to_shost(class_dev);
2575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2576 unsigned long lock_flags = 0;
2579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2580 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2586 * ipr_store_log_level - Change the adapter's error logging level
2587 * @class_dev: class device struct
2591 * number of bytes printed to buffer
2593 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2594 const char *buf, size_t count)
2596 struct Scsi_Host *shost = class_to_shost(class_dev);
2597 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2598 unsigned long lock_flags = 0;
2600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2601 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2606 static struct class_device_attribute ipr_log_level_attr = {
2608 .name = "log_level",
2609 .mode = S_IRUGO | S_IWUSR,
2611 .show = ipr_show_log_level,
2612 .store = ipr_store_log_level
2616 * ipr_store_diagnostics - IOA Diagnostics interface
2617 * @class_dev: class_device struct
2619 * @count: buffer size
2621 * This function will reset the adapter and wait a reasonable
2622 * amount of time for any errors that the adapter might log.
2625 * count on success / other on failure
2627 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2628 const char *buf, size_t count)
2630 struct Scsi_Host *shost = class_to_shost(class_dev);
2631 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2632 unsigned long lock_flags = 0;
2635 if (!capable(CAP_SYS_ADMIN))
2638 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2639 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2640 ioa_cfg->errors_logged = 0;
2641 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2643 if (ioa_cfg->in_reset_reload) {
2644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2645 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2647 /* Wait for a second for any errors to be logged */
2650 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2655 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2662 static struct class_device_attribute ipr_diagnostics_attr = {
2664 .name = "run_diagnostics",
2667 .store = ipr_store_diagnostics
2671 * ipr_show_adapter_state - Show the adapter's state
2672 * @class_dev: class device struct
2676 * number of bytes printed to buffer
2678 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2680 struct Scsi_Host *shost = class_to_shost(class_dev);
2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2682 unsigned long lock_flags = 0;
2685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2686 if (ioa_cfg->ioa_is_dead)
2687 len = snprintf(buf, PAGE_SIZE, "offline\n");
2689 len = snprintf(buf, PAGE_SIZE, "online\n");
2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2695 * ipr_store_adapter_state - Change adapter state
2696 * @class_dev: class_device struct
2698 * @count: buffer size
2700 * This function will change the adapter's state.
2703 * count on success / other on failure
2705 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2706 const char *buf, size_t count)
2708 struct Scsi_Host *shost = class_to_shost(class_dev);
2709 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2710 unsigned long lock_flags;
2713 if (!capable(CAP_SYS_ADMIN))
2716 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2717 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2718 ioa_cfg->ioa_is_dead = 0;
2719 ioa_cfg->reset_retries = 0;
2720 ioa_cfg->in_ioa_bringdown = 0;
2721 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2723 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2724 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2729 static struct class_device_attribute ipr_ioa_state_attr = {
2732 .mode = S_IRUGO | S_IWUSR,
2734 .show = ipr_show_adapter_state,
2735 .store = ipr_store_adapter_state
2739 * ipr_store_reset_adapter - Reset the adapter
2740 * @class_dev: class_device struct
2742 * @count: buffer size
2744 * This function will reset the adapter.
2747 * count on success / other on failure
2749 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2750 const char *buf, size_t count)
2752 struct Scsi_Host *shost = class_to_shost(class_dev);
2753 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2754 unsigned long lock_flags;
2757 if (!capable(CAP_SYS_ADMIN))
2760 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2761 if (!ioa_cfg->in_reset_reload)
2762 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2763 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2764 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2769 static struct class_device_attribute ipr_ioa_reset_attr = {
2771 .name = "reset_host",
2774 .store = ipr_store_reset_adapter
2778 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2779 * @buf_len: buffer length
2781 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2782 * list to use for microcode download
2785 * pointer to sglist / NULL on failure
2787 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2789 int sg_size, order, bsize_elem, num_elem, i, j;
2790 struct ipr_sglist *sglist;
2791 struct scatterlist *scatterlist;
2794 /* Get the minimum size per scatter/gather element */
2795 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2797 /* Get the actual size per element */
2798 order = get_order(sg_size);
2800 /* Determine the actual number of bytes per element */
2801 bsize_elem = PAGE_SIZE * (1 << order);
2803 /* Determine the actual number of sg entries needed */
2804 if (buf_len % bsize_elem)
2805 num_elem = (buf_len / bsize_elem) + 1;
2807 num_elem = buf_len / bsize_elem;
2809 /* Allocate a scatter/gather list for the DMA */
2810 sglist = kzalloc(sizeof(struct ipr_sglist) +
2811 (sizeof(struct scatterlist) * (num_elem - 1)),
2814 if (sglist == NULL) {
2819 scatterlist = sglist->scatterlist;
2821 sglist->order = order;
2822 sglist->num_sg = num_elem;
2824 /* Allocate a bunch of sg elements */
2825 for (i = 0; i < num_elem; i++) {
2826 page = alloc_pages(GFP_KERNEL, order);
2830 /* Free up what we already allocated */
2831 for (j = i - 1; j >= 0; j--)
2832 __free_pages(scatterlist[j].page, order);
2837 scatterlist[i].page = page;
2844 * ipr_free_ucode_buffer - Frees a microcode download buffer
2845 * @p_dnld: scatter/gather list pointer
2847 * Free a DMA'able ucode download buffer previously allocated with
2848 * ipr_alloc_ucode_buffer
2853 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2857 for (i = 0; i < sglist->num_sg; i++)
2858 __free_pages(sglist->scatterlist[i].page, sglist->order);
2864 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2865 * @sglist: scatter/gather list pointer
2866 * @buffer: buffer pointer
2867 * @len: buffer length
2869 * Copy a microcode image from a user buffer into a buffer allocated by
2870 * ipr_alloc_ucode_buffer
2873 * 0 on success / other on failure
2875 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2876 u8 *buffer, u32 len)
2878 int bsize_elem, i, result = 0;
2879 struct scatterlist *scatterlist;
2882 /* Determine the actual number of bytes per element */
2883 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2885 scatterlist = sglist->scatterlist;
2887 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2888 kaddr = kmap(scatterlist[i].page);
2889 memcpy(kaddr, buffer, bsize_elem);
2890 kunmap(scatterlist[i].page);
2892 scatterlist[i].length = bsize_elem;
2900 if (len % bsize_elem) {
2901 kaddr = kmap(scatterlist[i].page);
2902 memcpy(kaddr, buffer, len % bsize_elem);
2903 kunmap(scatterlist[i].page);
2905 scatterlist[i].length = len % bsize_elem;
2908 sglist->buffer_len = len;
2913 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2914 * @ipr_cmd: ipr command struct
2915 * @sglist: scatter/gather list
2917 * Builds a microcode download IOA data list (IOADL).
2920 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2921 struct ipr_sglist *sglist)
2923 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2924 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2925 struct scatterlist *scatterlist = sglist->scatterlist;
2928 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2929 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2930 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2931 ioarcb->write_ioadl_len =
2932 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2934 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2935 ioadl[i].flags_and_data_len =
2936 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2938 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2941 ioadl[i-1].flags_and_data_len |=
2942 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2946 * ipr_update_ioa_ucode - Update IOA's microcode
2947 * @ioa_cfg: ioa config struct
2948 * @sglist: scatter/gather list
2950 * Initiate an adapter reset to update the IOA's microcode
2953 * 0 on success / -EIO on failure
2955 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2956 struct ipr_sglist *sglist)
2958 unsigned long lock_flags;
2960 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2962 if (ioa_cfg->ucode_sglist) {
2963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2964 dev_err(&ioa_cfg->pdev->dev,
2965 "Microcode download already in progress\n");
2969 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2970 sglist->num_sg, DMA_TO_DEVICE);
2972 if (!sglist->num_dma_sg) {
2973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2974 dev_err(&ioa_cfg->pdev->dev,
2975 "Failed to map microcode download buffer!\n");
2979 ioa_cfg->ucode_sglist = sglist;
2980 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2982 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2984 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2985 ioa_cfg->ucode_sglist = NULL;
2986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2991 * ipr_store_update_fw - Update the firmware on the adapter
2992 * @class_dev: class_device struct
2994 * @count: buffer size
2996 * This function will update the firmware on the adapter.
2999 * count on success / other on failure
3001 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3002 const char *buf, size_t count)
3004 struct Scsi_Host *shost = class_to_shost(class_dev);
3005 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3006 struct ipr_ucode_image_header *image_hdr;
3007 const struct firmware *fw_entry;
3008 struct ipr_sglist *sglist;
3011 int len, result, dnld_size;
3013 if (!capable(CAP_SYS_ADMIN))
3016 len = snprintf(fname, 99, "%s", buf);
3017 fname[len-1] = '\0';
3019 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3020 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3024 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3026 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3027 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3028 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3029 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3030 release_firmware(fw_entry);
3034 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3035 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3036 sglist = ipr_alloc_ucode_buffer(dnld_size);
3039 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3040 release_firmware(fw_entry);
3044 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3047 dev_err(&ioa_cfg->pdev->dev,
3048 "Microcode buffer copy to DMA buffer failed\n");
3052 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3057 ipr_free_ucode_buffer(sglist);
3058 release_firmware(fw_entry);
3062 static struct class_device_attribute ipr_update_fw_attr = {
3064 .name = "update_fw",
3067 .store = ipr_store_update_fw
3070 static struct class_device_attribute *ipr_ioa_attrs[] = {
3071 &ipr_fw_version_attr,
3072 &ipr_log_level_attr,
3073 &ipr_diagnostics_attr,
3074 &ipr_ioa_state_attr,
3075 &ipr_ioa_reset_attr,
3076 &ipr_update_fw_attr,
3077 &ipr_ioa_cache_attr,
3081 #ifdef CONFIG_SCSI_IPR_DUMP
3083 * ipr_read_dump - Dump the adapter
3084 * @kobj: kobject struct
3087 * @count: buffer size
3090 * number of bytes printed to buffer
3092 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3093 loff_t off, size_t count)
3095 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3096 struct Scsi_Host *shost = class_to_shost(cdev);
3097 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3098 struct ipr_dump *dump;
3099 unsigned long lock_flags = 0;
3104 if (!capable(CAP_SYS_ADMIN))
3107 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3108 dump = ioa_cfg->dump;
3110 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3114 kref_get(&dump->kref);
3115 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3117 if (off > dump->driver_dump.hdr.len) {
3118 kref_put(&dump->kref, ipr_release_dump);
3122 if (off + count > dump->driver_dump.hdr.len) {
3123 count = dump->driver_dump.hdr.len - off;
3127 if (count && off < sizeof(dump->driver_dump)) {
3128 if (off + count > sizeof(dump->driver_dump))
3129 len = sizeof(dump->driver_dump) - off;
3132 src = (u8 *)&dump->driver_dump + off;
3133 memcpy(buf, src, len);
3139 off -= sizeof(dump->driver_dump);
3141 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3142 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3143 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3146 src = (u8 *)&dump->ioa_dump + off;
3147 memcpy(buf, src, len);
3153 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3156 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3157 len = PAGE_ALIGN(off) - off;
3160 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3161 src += off & ~PAGE_MASK;
3162 memcpy(buf, src, len);
3168 kref_put(&dump->kref, ipr_release_dump);
3173 * ipr_alloc_dump - Prepare for adapter dump
3174 * @ioa_cfg: ioa config struct
3177 * 0 on success / other on failure
3179 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3181 struct ipr_dump *dump;
3182 unsigned long lock_flags = 0;
3184 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3187 ipr_err("Dump memory allocation failed\n");
3191 kref_init(&dump->kref);
3192 dump->ioa_cfg = ioa_cfg;
3194 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3196 if (INACTIVE != ioa_cfg->sdt_state) {
3197 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3202 ioa_cfg->dump = dump;
3203 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3204 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3205 ioa_cfg->dump_taken = 1;
3206 schedule_work(&ioa_cfg->work_q);
3208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3214 * ipr_free_dump - Free adapter dump memory
3215 * @ioa_cfg: ioa config struct
3218 * 0 on success / other on failure
3220 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3222 struct ipr_dump *dump;
3223 unsigned long lock_flags = 0;
3227 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3228 dump = ioa_cfg->dump;
3230 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3234 ioa_cfg->dump = NULL;
3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3237 kref_put(&dump->kref, ipr_release_dump);
3244 * ipr_write_dump - Setup dump state of adapter
3245 * @kobj: kobject struct
3248 * @count: buffer size
3251 * number of bytes printed to buffer
3253 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3254 loff_t off, size_t count)
3256 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3257 struct Scsi_Host *shost = class_to_shost(cdev);
3258 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3261 if (!capable(CAP_SYS_ADMIN))
3265 rc = ipr_alloc_dump(ioa_cfg);
3266 else if (buf[0] == '0')
3267 rc = ipr_free_dump(ioa_cfg);
3277 static struct bin_attribute ipr_dump_attr = {
3280 .mode = S_IRUSR | S_IWUSR,
3283 .read = ipr_read_dump,
3284 .write = ipr_write_dump
3287 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3291 * ipr_change_queue_depth - Change the device's queue depth
3292 * @sdev: scsi device struct
3293 * @qdepth: depth to set
3298 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3300 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3301 struct ipr_resource_entry *res;
3302 unsigned long lock_flags = 0;
3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3305 res = (struct ipr_resource_entry *)sdev->hostdata;
3307 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3308 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3311 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3312 return sdev->queue_depth;
3316 * ipr_change_queue_type - Change the device's queue type
3317 * @dsev: scsi device struct
3318 * @tag_type: type of tags to use
3321 * actual queue type set
3323 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3325 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3326 struct ipr_resource_entry *res;
3327 unsigned long lock_flags = 0;
3329 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3330 res = (struct ipr_resource_entry *)sdev->hostdata;
3333 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3335 * We don't bother quiescing the device here since the
3336 * adapter firmware does it for us.
3338 scsi_set_tag_type(sdev, tag_type);
3341 scsi_activate_tcq(sdev, sdev->queue_depth);
3343 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3354 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3355 * @dev: device struct
3359 * number of bytes printed to buffer
3361 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3363 struct scsi_device *sdev = to_scsi_device(dev);
3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3365 struct ipr_resource_entry *res;
3366 unsigned long lock_flags = 0;
3367 ssize_t len = -ENXIO;
3369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3370 res = (struct ipr_resource_entry *)sdev->hostdata;
3372 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3377 static struct device_attribute ipr_adapter_handle_attr = {
3379 .name = "adapter_handle",
3382 .show = ipr_show_adapter_handle
3385 static struct device_attribute *ipr_dev_attrs[] = {
3386 &ipr_adapter_handle_attr,
3391 * ipr_biosparam - Return the HSC mapping
3392 * @sdev: scsi device struct
3393 * @block_device: block device pointer
3394 * @capacity: capacity of the device
3395 * @parm: Array containing returned HSC values.
3397 * This function generates the HSC parms that fdisk uses.
3398 * We want to make sure we return something that places partitions
3399 * on 4k boundaries for best performance with the IOA.
3404 static int ipr_biosparam(struct scsi_device *sdev,
3405 struct block_device *block_device,
3406 sector_t capacity, int *parm)
3414 cylinders = capacity;
3415 sector_div(cylinders, (128 * 32));
3420 parm[2] = cylinders;
3426 * ipr_find_starget - Find target based on bus/target.
3427 * @starget: scsi target struct
3430 * resource entry pointer if found / NULL if not found
3432 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3434 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3435 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3436 struct ipr_resource_entry *res;
3438 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3439 if ((res->cfgte.res_addr.bus == starget->channel) &&
3440 (res->cfgte.res_addr.target == starget->id) &&
3441 (res->cfgte.res_addr.lun == 0)) {
3449 static struct ata_port_info sata_port_info;
3452 * ipr_target_alloc - Prepare for commands to a SCSI target
3453 * @starget: scsi target struct
3455 * If the device is a SATA device, this function allocates an
3456 * ATA port with libata, else it does nothing.
3459 * 0 on success / non-0 on failure
3461 static int ipr_target_alloc(struct scsi_target *starget)
3463 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3464 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3465 struct ipr_sata_port *sata_port;
3466 struct ata_port *ap;
3467 struct ipr_resource_entry *res;
3468 unsigned long lock_flags;
3470 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3471 res = ipr_find_starget(starget);
3472 starget->hostdata = NULL;
3474 if (res && ipr_is_gata(res)) {
3475 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3476 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3480 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3482 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3483 sata_port->ioa_cfg = ioa_cfg;
3485 sata_port->res = res;
3487 res->sata_port = sata_port;
3488 ap->private_data = sata_port;
3489 starget->hostdata = sata_port;
3495 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3501 * ipr_target_destroy - Destroy a SCSI target
3502 * @starget: scsi target struct
3504 * If the device was a SATA device, this function frees the libata
3505 * ATA port, else it does nothing.
3508 static void ipr_target_destroy(struct scsi_target *starget)
3510 struct ipr_sata_port *sata_port = starget->hostdata;
3513 starget->hostdata = NULL;
3514 ata_sas_port_destroy(sata_port->ap);
3520 * ipr_find_sdev - Find device based on bus/target/lun.
3521 * @sdev: scsi device struct
3524 * resource entry pointer if found / NULL if not found
3526 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3529 struct ipr_resource_entry *res;
3531 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3532 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3533 (res->cfgte.res_addr.target == sdev->id) &&
3534 (res->cfgte.res_addr.lun == sdev->lun))
3542 * ipr_slave_destroy - Unconfigure a SCSI device
3543 * @sdev: scsi device struct
3548 static void ipr_slave_destroy(struct scsi_device *sdev)
3550 struct ipr_resource_entry *res;
3551 struct ipr_ioa_cfg *ioa_cfg;
3552 unsigned long lock_flags = 0;
3554 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3557 res = (struct ipr_resource_entry *) sdev->hostdata;
3560 ata_port_disable(res->sata_port->ap);
3561 sdev->hostdata = NULL;
3563 res->sata_port = NULL;
3565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3569 * ipr_slave_configure - Configure a SCSI device
3570 * @sdev: scsi device struct
3572 * This function configures the specified scsi device.
3577 static int ipr_slave_configure(struct scsi_device *sdev)
3579 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3580 struct ipr_resource_entry *res;
3581 unsigned long lock_flags = 0;
3583 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3584 res = sdev->hostdata;
3586 if (ipr_is_af_dasd_device(res))
3587 sdev->type = TYPE_RAID;
3588 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3589 sdev->scsi_level = 4;
3590 sdev->no_uld_attach = 1;
3592 if (ipr_is_vset_device(res)) {
3593 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3594 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3596 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3597 sdev->allow_restart = 1;
3598 if (ipr_is_gata(res) && res->sata_port) {
3599 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3600 ata_sas_slave_configure(sdev, res->sata_port->ap);
3602 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3605 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3610 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3611 * @sdev: scsi device struct
3613 * This function initializes an ATA port so that future commands
3614 * sent through queuecommand will work.
3619 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3621 struct ipr_sata_port *sata_port = NULL;
3625 if (sdev->sdev_target)
3626 sata_port = sdev->sdev_target->hostdata;
3628 rc = ata_sas_port_init(sata_port->ap);
3630 ipr_slave_destroy(sdev);
3637 * ipr_slave_alloc - Prepare for commands to a device.
3638 * @sdev: scsi device struct
3640 * This function saves a pointer to the resource entry
3641 * in the scsi device struct if the device exists. We
3642 * can then use this pointer in ipr_queuecommand when
3643 * handling new commands.
3646 * 0 on success / -ENXIO if device does not exist
3648 static int ipr_slave_alloc(struct scsi_device *sdev)
3650 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3651 struct ipr_resource_entry *res;
3652 unsigned long lock_flags;
3655 sdev->hostdata = NULL;
3657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3659 res = ipr_find_sdev(sdev);
3664 sdev->hostdata = res;
3665 if (!ipr_is_naca_model(res))
3666 res->needs_sync_complete = 1;
3668 if (ipr_is_gata(res)) {
3669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3670 return ipr_ata_slave_alloc(sdev);
3674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3680 * ipr_eh_host_reset - Reset the host adapter
3681 * @scsi_cmd: scsi command struct
3686 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3688 struct ipr_ioa_cfg *ioa_cfg;
3692 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3694 dev_err(&ioa_cfg->pdev->dev,
3695 "Adapter being reset as a result of error recovery.\n");
3697 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3698 ioa_cfg->sdt_state = GET_DUMP;
3700 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3706 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3710 spin_lock_irq(cmd->device->host->host_lock);
3711 rc = __ipr_eh_host_reset(cmd);
3712 spin_unlock_irq(cmd->device->host->host_lock);
3718 * ipr_device_reset - Reset the device
3719 * @ioa_cfg: ioa config struct
3720 * @res: resource entry struct
3722 * This function issues a device reset to the affected device.
3723 * If the device is a SCSI device, a LUN reset will be sent
3724 * to the device first. If that does not work, a target reset
3725 * will be sent. If the device is a SATA device, a PHY reset will
3729 * 0 on success / non-zero on failure
3731 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3732 struct ipr_resource_entry *res)
3734 struct ipr_cmnd *ipr_cmd;
3735 struct ipr_ioarcb *ioarcb;
3736 struct ipr_cmd_pkt *cmd_pkt;
3737 struct ipr_ioarcb_ata_regs *regs;
3741 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3742 ioarcb = &ipr_cmd->ioarcb;
3743 cmd_pkt = &ioarcb->cmd_pkt;
3744 regs = &ioarcb->add_data.u.regs;
3746 ioarcb->res_handle = res->cfgte.res_handle;
3747 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3748 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3749 if (ipr_is_gata(res)) {
3750 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3751 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3752 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3755 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3756 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3757 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3758 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3759 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3760 sizeof(struct ipr_ioasa_gata));
3763 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3767 * ipr_sata_reset - Reset the SATA port
3768 * @ap: SATA port to reset
3769 * @classes: class of the attached device
3771 * This function issues a SATA phy reset to the affected ATA port.
3774 * 0 on success / non-zero on failure
3776 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3778 struct ipr_sata_port *sata_port = ap->private_data;
3779 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3780 struct ipr_resource_entry *res;
3781 unsigned long lock_flags = 0;
3785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3786 while(ioa_cfg->in_reset_reload) {
3787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3788 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3789 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3792 res = sata_port->res;
3794 rc = ipr_device_reset(ioa_cfg, res);
3795 switch(res->cfgte.proto) {
3796 case IPR_PROTO_SATA:
3797 case IPR_PROTO_SAS_STP:
3798 *classes = ATA_DEV_ATA;
3800 case IPR_PROTO_SATA_ATAPI:
3801 case IPR_PROTO_SAS_STP_ATAPI:
3802 *classes = ATA_DEV_ATAPI;
3805 *classes = ATA_DEV_UNKNOWN;
3810 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3816 * ipr_eh_dev_reset - Reset the device
3817 * @scsi_cmd: scsi command struct
3819 * This function issues a device reset to the affected device.
3820 * A LUN reset will be sent to the device first. If that does
3821 * not work, a target reset will be sent.
3826 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3828 struct ipr_cmnd *ipr_cmd;
3829 struct ipr_ioa_cfg *ioa_cfg;
3830 struct ipr_resource_entry *res;
3831 struct ata_port *ap;
3835 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3836 res = scsi_cmd->device->hostdata;
3842 * If we are currently going through reset/reload, return failed. This will force the
3843 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3846 if (ioa_cfg->in_reset_reload)
3848 if (ioa_cfg->ioa_is_dead)
3851 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3852 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3853 if (ipr_cmd->scsi_cmd)
3854 ipr_cmd->done = ipr_scsi_eh_done;
3856 ipr_cmd->done = ipr_sata_eh_done;
3857 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3858 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3859 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3864 res->resetting_device = 1;
3865 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3867 if (ipr_is_gata(res) && res->sata_port) {
3868 ap = res->sata_port->ap;
3869 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3870 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3871 spin_lock_irq(scsi_cmd->device->host->host_lock);
3873 rc = ipr_device_reset(ioa_cfg, res);
3874 res->resetting_device = 0;
3877 return (rc ? FAILED : SUCCESS);
3880 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3884 spin_lock_irq(cmd->device->host->host_lock);
3885 rc = __ipr_eh_dev_reset(cmd);
3886 spin_unlock_irq(cmd->device->host->host_lock);
3892 * ipr_bus_reset_done - Op done function for bus reset.
3893 * @ipr_cmd: ipr command struct
3895 * This function is the op done function for a bus reset
3900 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3902 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3903 struct ipr_resource_entry *res;
3906 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3907 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3908 sizeof(res->cfgte.res_handle))) {
3909 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3915 * If abort has not completed, indicate the reset has, else call the
3916 * abort's done function to wake the sleeping eh thread
3918 if (ipr_cmd->sibling->sibling)
3919 ipr_cmd->sibling->sibling = NULL;
3921 ipr_cmd->sibling->done(ipr_cmd->sibling);
3923 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3928 * ipr_abort_timeout - An abort task has timed out
3929 * @ipr_cmd: ipr command struct
3931 * This function handles when an abort task times out. If this
3932 * happens we issue a bus reset since we have resources tied
3933 * up that must be freed before returning to the midlayer.
3938 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3940 struct ipr_cmnd *reset_cmd;
3941 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3942 struct ipr_cmd_pkt *cmd_pkt;
3943 unsigned long lock_flags = 0;
3946 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3947 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3948 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3952 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
3953 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3954 ipr_cmd->sibling = reset_cmd;
3955 reset_cmd->sibling = ipr_cmd;
3956 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3957 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3958 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3959 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3960 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3962 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3968 * ipr_cancel_op - Cancel specified op
3969 * @scsi_cmd: scsi command struct
3971 * This function cancels specified op.
3976 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3978 struct ipr_cmnd *ipr_cmd;
3979 struct ipr_ioa_cfg *ioa_cfg;
3980 struct ipr_resource_entry *res;
3981 struct ipr_cmd_pkt *cmd_pkt;
3986 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3987 res = scsi_cmd->device->hostdata;
3989 /* If we are currently going through reset/reload, return failed.
3990 * This will force the mid-layer to call ipr_eh_host_reset,
3991 * which will then go to sleep and wait for the reset to complete
3993 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3995 if (!res || !ipr_is_gscsi(res))
3998 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3999 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4000 ipr_cmd->done = ipr_scsi_eh_done;
4009 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4010 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4011 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4012 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4013 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4014 ipr_cmd->u.sdev = scsi_cmd->device;
4016 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4018 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4019 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4022 * If the abort task timed out and we sent a bus reset, we will get
4023 * one the following responses to the abort
4025 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4030 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4031 if (!ipr_is_naca_model(res))
4032 res->needs_sync_complete = 1;
4035 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4039 * ipr_eh_abort - Abort a single op
4040 * @scsi_cmd: scsi command struct
4045 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4047 unsigned long flags;
4052 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4053 rc = ipr_cancel_op(scsi_cmd);
4054 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4061 * ipr_handle_other_interrupt - Handle "other" interrupts
4062 * @ioa_cfg: ioa config struct
4063 * @int_reg: interrupt register
4066 * IRQ_NONE / IRQ_HANDLED
4068 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4069 volatile u32 int_reg)
4071 irqreturn_t rc = IRQ_HANDLED;
4073 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4074 /* Mask the interrupt */
4075 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4077 /* Clear the interrupt */
4078 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4079 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4081 list_del(&ioa_cfg->reset_cmd->queue);
4082 del_timer(&ioa_cfg->reset_cmd->timer);
4083 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4085 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4086 ioa_cfg->ioa_unit_checked = 1;
4088 dev_err(&ioa_cfg->pdev->dev,
4089 "Permanent IOA failure. 0x%08X\n", int_reg);
4091 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4092 ioa_cfg->sdt_state = GET_DUMP;
4094 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4095 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4102 * ipr_isr - Interrupt service routine
4104 * @devp: pointer to ioa config struct
4107 * IRQ_NONE / IRQ_HANDLED
4109 static irqreturn_t ipr_isr(int irq, void *devp)
4111 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4112 unsigned long lock_flags = 0;
4113 volatile u32 int_reg, int_mask_reg;
4116 struct ipr_cmnd *ipr_cmd;
4117 irqreturn_t rc = IRQ_NONE;
4119 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4121 /* If interrupts are disabled, ignore the interrupt */
4122 if (!ioa_cfg->allow_interrupts) {
4123 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4127 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4128 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4130 /* If an interrupt on the adapter did not occur, ignore it */
4131 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4140 ioa_cfg->toggle_bit) {
4142 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4143 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4145 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4146 ioa_cfg->errors_logged++;
4147 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4149 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4150 ioa_cfg->sdt_state = GET_DUMP;
4152 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4157 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4159 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4161 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4163 list_del(&ipr_cmd->queue);
4164 del_timer(&ipr_cmd->timer);
4165 ipr_cmd->done(ipr_cmd);
4169 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4170 ioa_cfg->hrrq_curr++;
4172 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4173 ioa_cfg->toggle_bit ^= 1u;
4177 if (ipr_cmd != NULL) {
4178 /* Clear the PCI interrupt */
4179 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4180 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4185 if (unlikely(rc == IRQ_NONE))
4186 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4193 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4194 * @ioa_cfg: ioa config struct
4195 * @ipr_cmd: ipr command struct
4198 * 0 on success / -1 on failure
4200 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4201 struct ipr_cmnd *ipr_cmd)
4204 struct scatterlist *sglist;
4206 u32 ioadl_flags = 0;
4207 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4208 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4209 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4211 length = scsi_cmd->request_bufflen;
4216 if (scsi_cmd->use_sg) {
4217 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4218 scsi_cmd->request_buffer,
4220 scsi_cmd->sc_data_direction);
4222 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4223 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4224 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4225 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4226 ioarcb->write_ioadl_len =
4227 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4228 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4229 ioadl_flags = IPR_IOADL_FLAGS_READ;
4230 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4231 ioarcb->read_ioadl_len =
4232 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4235 sglist = scsi_cmd->request_buffer;
4237 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4238 ioadl = ioarcb->add_data.u.ioadl;
4239 ioarcb->write_ioadl_addr =
4240 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4241 offsetof(struct ipr_ioarcb, add_data));
4242 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4245 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4246 ioadl[i].flags_and_data_len =
4247 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4249 cpu_to_be32(sg_dma_address(&sglist[i]));
4252 if (likely(ipr_cmd->dma_use_sg)) {
4253 ioadl[i-1].flags_and_data_len |=
4254 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4257 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4259 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4260 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4261 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4262 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4263 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4264 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4265 ioadl_flags = IPR_IOADL_FLAGS_READ;
4266 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4267 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4270 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4271 scsi_cmd->request_buffer, length,
4272 scsi_cmd->sc_data_direction);
4274 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4275 ioadl = ioarcb->add_data.u.ioadl;
4276 ioarcb->write_ioadl_addr =
4277 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4278 offsetof(struct ipr_ioarcb, add_data));
4279 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4280 ipr_cmd->dma_use_sg = 1;
4281 ioadl[0].flags_and_data_len =
4282 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4283 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4286 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4293 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4294 * @scsi_cmd: scsi command struct
4299 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4302 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4304 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4306 case MSG_SIMPLE_TAG:
4307 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4310 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4312 case MSG_ORDERED_TAG:
4313 rc = IPR_FLAGS_LO_ORDERED_TASK;
4322 * ipr_erp_done - Process completion of ERP for a device
4323 * @ipr_cmd: ipr command struct
4325 * This function copies the sense buffer into the scsi_cmd
4326 * struct and pushes the scsi_done function.
4331 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4333 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4334 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4335 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4336 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4338 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4339 scsi_cmd->result |= (DID_ERROR << 16);
4340 scmd_printk(KERN_ERR, scsi_cmd,
4341 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4343 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4344 SCSI_SENSE_BUFFERSIZE);
4348 if (!ipr_is_naca_model(res))
4349 res->needs_sync_complete = 1;
4352 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4353 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4354 scsi_cmd->scsi_done(scsi_cmd);
4358 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4359 * @ipr_cmd: ipr command struct
4364 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4366 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4367 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4368 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4370 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4371 ioarcb->write_data_transfer_length = 0;
4372 ioarcb->read_data_transfer_length = 0;
4373 ioarcb->write_ioadl_len = 0;
4374 ioarcb->read_ioadl_len = 0;
4376 ioasa->residual_data_len = 0;
4377 ioarcb->write_ioadl_addr =
4378 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4379 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4383 * ipr_erp_request_sense - Send request sense to a device
4384 * @ipr_cmd: ipr command struct
4386 * This function sends a request sense to a device as a result
4387 * of a check condition.
4392 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4394 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4395 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4397 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4398 ipr_erp_done(ipr_cmd);
4402 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4404 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4405 cmd_pkt->cdb[0] = REQUEST_SENSE;
4406 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4407 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4408 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4409 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4411 ipr_cmd->ioadl[0].flags_and_data_len =
4412 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4413 ipr_cmd->ioadl[0].address =
4414 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4416 ipr_cmd->ioarcb.read_ioadl_len =
4417 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4418 ipr_cmd->ioarcb.read_data_transfer_length =
4419 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4421 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4422 IPR_REQUEST_SENSE_TIMEOUT * 2);
4426 * ipr_erp_cancel_all - Send cancel all to a device
4427 * @ipr_cmd: ipr command struct
4429 * This function sends a cancel all to a device to clear the
4430 * queue. If we are running TCQ on the device, QERR is set to 1,
4431 * which means all outstanding ops have been dropped on the floor.
4432 * Cancel all will return them to us.
4437 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4439 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4440 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4441 struct ipr_cmd_pkt *cmd_pkt;
4445 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4447 if (!scsi_get_tag_type(scsi_cmd->device)) {
4448 ipr_erp_request_sense(ipr_cmd);
4452 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4453 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4454 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4456 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4457 IPR_CANCEL_ALL_TIMEOUT);
4461 * ipr_dump_ioasa - Dump contents of IOASA
4462 * @ioa_cfg: ioa config struct
4463 * @ipr_cmd: ipr command struct
4464 * @res: resource entry struct
4466 * This function is invoked by the interrupt handler when ops
4467 * fail. It will log the IOASA if appropriate. Only called
4473 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4474 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4478 u32 ioasc, fd_ioasc;
4479 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4480 __be32 *ioasa_data = (__be32 *)ioasa;
4483 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4484 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4489 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4492 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4493 error_index = ipr_get_error(fd_ioasc);
4495 error_index = ipr_get_error(ioasc);
4497 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4498 /* Don't log an error if the IOA already logged one */
4499 if (ioasa->ilid != 0)
4502 if (!ipr_is_gscsi(res))
4505 if (ipr_error_table[error_index].log_ioasa == 0)
4509 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4511 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4512 data_len = sizeof(struct ipr_ioasa);
4514 data_len = be16_to_cpu(ioasa->ret_stat_len);
4516 ipr_err("IOASA Dump:\n");
4518 for (i = 0; i < data_len / 4; i += 4) {
4519 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4520 be32_to_cpu(ioasa_data[i]),
4521 be32_to_cpu(ioasa_data[i+1]),
4522 be32_to_cpu(ioasa_data[i+2]),
4523 be32_to_cpu(ioasa_data[i+3]));
4528 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4530 * @sense_buf: sense data buffer
4535 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4538 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4539 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4540 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4541 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4543 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4545 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4548 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4550 if (ipr_is_vset_device(res) &&
4551 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4552 ioasa->u.vset.failing_lba_hi != 0) {
4553 sense_buf[0] = 0x72;
4554 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4555 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4556 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4560 sense_buf[9] = 0x0A;
4561 sense_buf[10] = 0x80;
4563 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4565 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4566 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4567 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4568 sense_buf[15] = failing_lba & 0x000000ff;
4570 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4572 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4573 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4574 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4575 sense_buf[19] = failing_lba & 0x000000ff;
4577 sense_buf[0] = 0x70;
4578 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4579 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4580 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4582 /* Illegal request */
4583 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4584 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4585 sense_buf[7] = 10; /* additional length */
4587 /* IOARCB was in error */
4588 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4589 sense_buf[15] = 0xC0;
4590 else /* Parameter data was invalid */
4591 sense_buf[15] = 0x80;
4594 ((IPR_FIELD_POINTER_MASK &
4595 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4597 (IPR_FIELD_POINTER_MASK &
4598 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4600 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4601 if (ipr_is_vset_device(res))
4602 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4604 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4606 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4607 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4608 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4609 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4610 sense_buf[6] = failing_lba & 0x000000ff;
4613 sense_buf[7] = 6; /* additional length */
4619 * ipr_get_autosense - Copy autosense data to sense buffer
4620 * @ipr_cmd: ipr command struct
4622 * This function copies the autosense buffer to the buffer
4623 * in the scsi_cmd, if there is autosense available.
4626 * 1 if autosense was available / 0 if not
4628 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4630 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4632 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4635 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4636 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4637 SCSI_SENSE_BUFFERSIZE));
4642 * ipr_erp_start - Process an error response for a SCSI op
4643 * @ioa_cfg: ioa config struct
4644 * @ipr_cmd: ipr command struct
4646 * This function determines whether or not to initiate ERP
4647 * on the affected device.
4652 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4653 struct ipr_cmnd *ipr_cmd)
4655 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4656 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4657 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4660 ipr_scsi_eh_done(ipr_cmd);
4664 if (!ipr_is_gscsi(res))
4665 ipr_gen_sense(ipr_cmd);
4667 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4669 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4670 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4671 if (ipr_is_naca_model(res))
4672 scsi_cmd->result |= (DID_ABORT << 16);
4674 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4676 case IPR_IOASC_IR_RESOURCE_HANDLE:
4677 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4678 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4680 case IPR_IOASC_HW_SEL_TIMEOUT:
4681 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4682 if (!ipr_is_naca_model(res))
4683 res->needs_sync_complete = 1;
4685 case IPR_IOASC_SYNC_REQUIRED:
4687 res->needs_sync_complete = 1;
4688 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4690 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4691 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4692 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4694 case IPR_IOASC_BUS_WAS_RESET:
4695 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4697 * Report the bus reset and ask for a retry. The device
4698 * will give CC/UA the next command.
4700 if (!res->resetting_device)
4701 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4702 scsi_cmd->result |= (DID_ERROR << 16);
4703 if (!ipr_is_naca_model(res))
4704 res->needs_sync_complete = 1;
4706 case IPR_IOASC_HW_DEV_BUS_STATUS:
4707 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4708 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4709 if (!ipr_get_autosense(ipr_cmd)) {
4710 if (!ipr_is_naca_model(res)) {
4711 ipr_erp_cancel_all(ipr_cmd);
4716 if (!ipr_is_naca_model(res))
4717 res->needs_sync_complete = 1;
4719 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4722 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4723 scsi_cmd->result |= (DID_ERROR << 16);
4724 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4725 res->needs_sync_complete = 1;
4729 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4730 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4731 scsi_cmd->scsi_done(scsi_cmd);
4735 * ipr_scsi_done - mid-layer done function
4736 * @ipr_cmd: ipr command struct
4738 * This function is invoked by the interrupt handler for
4739 * ops generated by the SCSI mid-layer
4744 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4746 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4748 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4750 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4752 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4753 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4755 scsi_cmd->scsi_done(scsi_cmd);
4757 ipr_erp_start(ioa_cfg, ipr_cmd);
4761 * ipr_queuecommand - Queue a mid-layer request
4762 * @scsi_cmd: scsi command struct
4763 * @done: done function
4765 * This function queues a request generated by the mid-layer.
4769 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4770 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4772 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4773 void (*done) (struct scsi_cmnd *))
4775 struct ipr_ioa_cfg *ioa_cfg;
4776 struct ipr_resource_entry *res;
4777 struct ipr_ioarcb *ioarcb;
4778 struct ipr_cmnd *ipr_cmd;
4781 scsi_cmd->scsi_done = done;
4782 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4783 res = scsi_cmd->device->hostdata;
4784 scsi_cmd->result = (DID_OK << 16);
4787 * We are currently blocking all devices due to a host reset
4788 * We have told the host to stop giving us new requests, but
4789 * ERP ops don't count. FIXME
4791 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4792 return SCSI_MLQUEUE_HOST_BUSY;
4795 * FIXME - Create scsi_set_host_offline interface
4796 * and the ioa_is_dead check can be removed
4798 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4799 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4800 scsi_cmd->result = (DID_NO_CONNECT << 16);
4801 scsi_cmd->scsi_done(scsi_cmd);
4805 if (ipr_is_gata(res) && res->sata_port)
4806 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4808 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4809 ioarcb = &ipr_cmd->ioarcb;
4810 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4812 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4813 ipr_cmd->scsi_cmd = scsi_cmd;
4814 ioarcb->res_handle = res->cfgte.res_handle;
4815 ipr_cmd->done = ipr_scsi_done;
4816 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4818 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4819 if (scsi_cmd->underflow == 0)
4820 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4822 if (res->needs_sync_complete) {
4823 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4824 res->needs_sync_complete = 0;
4827 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4828 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4829 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4830 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4833 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4834 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4835 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4837 if (likely(rc == 0))
4838 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4840 if (likely(rc == 0)) {
4842 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4843 ioa_cfg->regs.ioarrin_reg);
4845 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4846 return SCSI_MLQUEUE_HOST_BUSY;
4853 * ipr_ioctl - IOCTL handler
4854 * @sdev: scsi device struct
4859 * 0 on success / other on failure
4861 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4863 struct ipr_resource_entry *res;
4865 res = (struct ipr_resource_entry *)sdev->hostdata;
4866 if (res && ipr_is_gata(res))
4867 return ata_scsi_ioctl(sdev, cmd, arg);
4873 * ipr_info - Get information about the card/driver
4874 * @scsi_host: scsi host struct
4877 * pointer to buffer with description string
4879 static const char * ipr_ioa_info(struct Scsi_Host *host)
4881 static char buffer[512];
4882 struct ipr_ioa_cfg *ioa_cfg;
4883 unsigned long lock_flags = 0;
4885 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4887 spin_lock_irqsave(host->host_lock, lock_flags);
4888 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4889 spin_unlock_irqrestore(host->host_lock, lock_flags);
4894 static struct scsi_host_template driver_template = {
4895 .module = THIS_MODULE,
4897 .info = ipr_ioa_info,
4899 .queuecommand = ipr_queuecommand,
4900 .eh_abort_handler = ipr_eh_abort,
4901 .eh_device_reset_handler = ipr_eh_dev_reset,
4902 .eh_host_reset_handler = ipr_eh_host_reset,
4903 .slave_alloc = ipr_slave_alloc,
4904 .slave_configure = ipr_slave_configure,
4905 .slave_destroy = ipr_slave_destroy,
4906 .target_alloc = ipr_target_alloc,
4907 .target_destroy = ipr_target_destroy,
4908 .change_queue_depth = ipr_change_queue_depth,
4909 .change_queue_type = ipr_change_queue_type,
4910 .bios_param = ipr_biosparam,
4911 .can_queue = IPR_MAX_COMMANDS,
4913 .sg_tablesize = IPR_MAX_SGLIST,
4914 .max_sectors = IPR_IOA_MAX_SECTORS,
4915 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4916 .use_clustering = ENABLE_CLUSTERING,
4917 .shost_attrs = ipr_ioa_attrs,
4918 .sdev_attrs = ipr_dev_attrs,
4919 .proc_name = IPR_NAME
4923 * ipr_ata_phy_reset - libata phy_reset handler
4924 * @ap: ata port to reset
4927 static void ipr_ata_phy_reset(struct ata_port *ap)
4929 unsigned long flags;
4930 struct ipr_sata_port *sata_port = ap->private_data;
4931 struct ipr_resource_entry *res = sata_port->res;
4932 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4936 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4937 while(ioa_cfg->in_reset_reload) {
4938 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4939 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4940 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4943 if (!ioa_cfg->allow_cmds)
4946 rc = ipr_device_reset(ioa_cfg, res);
4949 ap->ops->port_disable(ap);
4953 switch(res->cfgte.proto) {
4954 case IPR_PROTO_SATA:
4955 case IPR_PROTO_SAS_STP:
4956 ap->device[0].class = ATA_DEV_ATA;
4958 case IPR_PROTO_SATA_ATAPI:
4959 case IPR_PROTO_SAS_STP_ATAPI:
4960 ap->device[0].class = ATA_DEV_ATAPI;
4963 ap->device[0].class = ATA_DEV_UNKNOWN;
4964 ap->ops->port_disable(ap);
4969 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4974 * ipr_ata_post_internal - Cleanup after an internal command
4975 * @qc: ATA queued command
4980 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4982 struct ipr_sata_port *sata_port = qc->ap->private_data;
4983 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4984 struct ipr_cmnd *ipr_cmd;
4985 unsigned long flags;
4987 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4988 while(ioa_cfg->in_reset_reload) {
4989 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4990 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4991 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4994 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4995 if (ipr_cmd->qc == qc) {
4996 ipr_device_reset(ioa_cfg, sata_port->res);
5000 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5004 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5006 * @tf: destination ATA taskfile
5011 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5013 struct ipr_sata_port *sata_port = ap->private_data;
5014 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5016 tf->feature = g->error;
5017 tf->nsect = g->nsect;
5021 tf->device = g->device;
5022 tf->command = g->status;
5023 tf->hob_nsect = g->hob_nsect;
5024 tf->hob_lbal = g->hob_lbal;
5025 tf->hob_lbam = g->hob_lbam;
5026 tf->hob_lbah = g->hob_lbah;
5027 tf->ctl = g->alt_status;
5031 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5032 * @regs: destination
5033 * @tf: source ATA taskfile
5038 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5039 struct ata_taskfile *tf)
5041 regs->feature = tf->feature;
5042 regs->nsect = tf->nsect;
5043 regs->lbal = tf->lbal;
5044 regs->lbam = tf->lbam;
5045 regs->lbah = tf->lbah;
5046 regs->device = tf->device;
5047 regs->command = tf->command;
5048 regs->hob_feature = tf->hob_feature;
5049 regs->hob_nsect = tf->hob_nsect;
5050 regs->hob_lbal = tf->hob_lbal;
5051 regs->hob_lbam = tf->hob_lbam;
5052 regs->hob_lbah = tf->hob_lbah;
5053 regs->ctl = tf->ctl;
5057 * ipr_sata_done - done function for SATA commands
5058 * @ipr_cmd: ipr command struct
5060 * This function is invoked by the interrupt handler for
5061 * ops generated by the SCSI mid-layer to SATA devices
5066 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5068 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5069 struct ata_queued_cmd *qc = ipr_cmd->qc;
5070 struct ipr_sata_port *sata_port = qc->ap->private_data;
5071 struct ipr_resource_entry *res = sata_port->res;
5072 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5074 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5075 sizeof(struct ipr_ioasa_gata));
5076 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5078 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5079 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5080 res->cfgte.res_addr.target);
5082 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5083 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5085 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5086 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5087 ata_qc_complete(qc);
5091 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5092 * @ipr_cmd: ipr command struct
5093 * @qc: ATA queued command
5096 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5097 struct ata_queued_cmd *qc)
5099 u32 ioadl_flags = 0;
5100 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5101 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5102 int len = qc->nbytes + qc->pad_len;
5103 struct scatterlist *sg;
5108 if (qc->dma_dir == DMA_TO_DEVICE) {
5109 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5110 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5111 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5112 ioarcb->write_ioadl_len =
5113 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5114 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5115 ioadl_flags = IPR_IOADL_FLAGS_READ;
5116 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5117 ioarcb->read_ioadl_len =
5118 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5121 ata_for_each_sg(sg, qc) {
5122 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5123 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5124 if (ata_sg_is_last(sg, qc))
5125 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5132 * ipr_qc_issue - Issue a SATA qc to a device
5133 * @qc: queued command
5138 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5140 struct ata_port *ap = qc->ap;
5141 struct ipr_sata_port *sata_port = ap->private_data;
5142 struct ipr_resource_entry *res = sata_port->res;
5143 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5144 struct ipr_cmnd *ipr_cmd;
5145 struct ipr_ioarcb *ioarcb;
5146 struct ipr_ioarcb_ata_regs *regs;
5148 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5149 return AC_ERR_SYSTEM;
5151 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5152 ioarcb = &ipr_cmd->ioarcb;
5153 regs = &ioarcb->add_data.u.regs;
5155 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5156 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5158 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5160 ipr_cmd->done = ipr_sata_done;
5161 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5162 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5163 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5164 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5165 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5167 ipr_build_ata_ioadl(ipr_cmd, qc);
5168 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5169 ipr_copy_sata_tf(regs, &qc->tf);
5170 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5171 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5173 switch (qc->tf.protocol) {
5174 case ATA_PROT_NODATA:
5179 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5182 case ATA_PROT_ATAPI:
5183 case ATA_PROT_ATAPI_NODATA:
5184 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5187 case ATA_PROT_ATAPI_DMA:
5188 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5189 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5194 return AC_ERR_INVALID;
5198 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5199 ioa_cfg->regs.ioarrin_reg);
5204 * ipr_ata_check_status - Return last ATA status
5210 static u8 ipr_ata_check_status(struct ata_port *ap)
5212 struct ipr_sata_port *sata_port = ap->private_data;
5213 return sata_port->ioasa.status;
5217 * ipr_ata_check_altstatus - Return last ATA altstatus
5223 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5225 struct ipr_sata_port *sata_port = ap->private_data;
5226 return sata_port->ioasa.alt_status;
5229 static struct ata_port_operations ipr_sata_ops = {
5230 .port_disable = ata_port_disable,
5231 .check_status = ipr_ata_check_status,
5232 .check_altstatus = ipr_ata_check_altstatus,
5233 .dev_select = ata_noop_dev_select,
5234 .phy_reset = ipr_ata_phy_reset,
5235 .post_internal_cmd = ipr_ata_post_internal,
5236 .tf_read = ipr_tf_read,
5237 .qc_prep = ata_noop_qc_prep,
5238 .qc_issue = ipr_qc_issue,
5239 .port_start = ata_sas_port_start,
5240 .port_stop = ata_sas_port_stop
5243 static struct ata_port_info sata_port_info = {
5244 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5245 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5246 .pio_mask = 0x10, /* pio4 */
5248 .udma_mask = 0x7f, /* udma0-6 */
5249 .port_ops = &ipr_sata_ops
5252 #ifdef CONFIG_PPC_PSERIES
5253 static const u16 ipr_blocked_processors[] = {
5265 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5266 * @ioa_cfg: ioa cfg struct
5268 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5269 * certain pSeries hardware. This function determines if the given
5270 * adapter is in one of these confgurations or not.
5273 * 1 if adapter is not supported / 0 if adapter is supported
5275 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5280 if (ioa_cfg->type == 0x5702) {
5281 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5282 &rev_id) == PCIBIOS_SUCCESSFUL) {
5284 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5285 if (__is_processor(ipr_blocked_processors[i]))
5294 #define ipr_invalid_adapter(ioa_cfg) 0
5298 * ipr_ioa_bringdown_done - IOA bring down completion.
5299 * @ipr_cmd: ipr command struct
5301 * This function processes the completion of an adapter bring down.
5302 * It wakes any reset sleepers.
5307 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5312 ioa_cfg->in_reset_reload = 0;
5313 ioa_cfg->reset_retries = 0;
5314 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5315 wake_up_all(&ioa_cfg->reset_wait_q);
5317 spin_unlock_irq(ioa_cfg->host->host_lock);
5318 scsi_unblock_requests(ioa_cfg->host);
5319 spin_lock_irq(ioa_cfg->host->host_lock);
5322 return IPR_RC_JOB_RETURN;
5326 * ipr_ioa_reset_done - IOA reset completion.
5327 * @ipr_cmd: ipr command struct
5329 * This function processes the completion of an adapter reset.
5330 * It schedules any necessary mid-layer add/removes and
5331 * wakes any reset sleepers.
5336 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5339 struct ipr_resource_entry *res;
5340 struct ipr_hostrcb *hostrcb, *temp;
5344 ioa_cfg->in_reset_reload = 0;
5345 ioa_cfg->allow_cmds = 1;
5346 ioa_cfg->reset_cmd = NULL;
5347 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5349 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5350 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5355 schedule_work(&ioa_cfg->work_q);
5357 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5358 list_del(&hostrcb->queue);
5359 if (i++ < IPR_NUM_LOG_HCAMS)
5360 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5362 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5365 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5367 ioa_cfg->reset_retries = 0;
5368 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5369 wake_up_all(&ioa_cfg->reset_wait_q);
5371 spin_unlock_irq(ioa_cfg->host->host_lock);
5372 scsi_unblock_requests(ioa_cfg->host);
5373 spin_lock_irq(ioa_cfg->host->host_lock);
5375 if (!ioa_cfg->allow_cmds)
5376 scsi_block_requests(ioa_cfg->host);
5379 return IPR_RC_JOB_RETURN;
5383 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5384 * @supported_dev: supported device struct
5385 * @vpids: vendor product id struct
5390 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5391 struct ipr_std_inq_vpids *vpids)
5393 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5394 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5395 supported_dev->num_records = 1;
5396 supported_dev->data_length =
5397 cpu_to_be16(sizeof(struct ipr_supported_device));
5398 supported_dev->reserved = 0;
5402 * ipr_set_supported_devs - Send Set Supported Devices for a device
5403 * @ipr_cmd: ipr command struct
5405 * This function send a Set Supported Devices to the adapter
5408 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5410 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5412 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5413 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5414 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5415 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5416 struct ipr_resource_entry *res = ipr_cmd->u.res;
5418 ipr_cmd->job_step = ipr_ioa_reset_done;
5420 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5421 if (!ipr_is_scsi_disk(res))
5424 ipr_cmd->u.res = res;
5425 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5427 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5428 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5429 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5431 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5432 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5433 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5435 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5436 sizeof(struct ipr_supported_device));
5437 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5438 offsetof(struct ipr_misc_cbs, supp_dev));
5439 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5440 ioarcb->write_data_transfer_length =
5441 cpu_to_be32(sizeof(struct ipr_supported_device));
5443 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5444 IPR_SET_SUP_DEVICE_TIMEOUT);
5446 ipr_cmd->job_step = ipr_set_supported_devs;
5447 return IPR_RC_JOB_RETURN;
5450 return IPR_RC_JOB_CONTINUE;
5454 * ipr_setup_write_cache - Disable write cache if needed
5455 * @ipr_cmd: ipr command struct
5457 * This function sets up adapters write cache to desired setting
5460 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5462 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5464 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5466 ipr_cmd->job_step = ipr_set_supported_devs;
5467 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5468 struct ipr_resource_entry, queue);
5470 if (ioa_cfg->cache_state != CACHE_DISABLED)
5471 return IPR_RC_JOB_CONTINUE;
5473 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5474 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5475 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5476 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5478 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5480 return IPR_RC_JOB_RETURN;
5484 * ipr_get_mode_page - Locate specified mode page
5485 * @mode_pages: mode page buffer
5486 * @page_code: page code to find
5487 * @len: minimum required length for mode page
5490 * pointer to mode page / NULL on failure
5492 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5493 u32 page_code, u32 len)
5495 struct ipr_mode_page_hdr *mode_hdr;
5499 if (!mode_pages || (mode_pages->hdr.length == 0))
5502 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5503 mode_hdr = (struct ipr_mode_page_hdr *)
5504 (mode_pages->data + mode_pages->hdr.block_desc_len);
5507 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5508 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5512 page_length = (sizeof(struct ipr_mode_page_hdr) +
5513 mode_hdr->page_length);
5514 length -= page_length;
5515 mode_hdr = (struct ipr_mode_page_hdr *)
5516 ((unsigned long)mode_hdr + page_length);
5523 * ipr_check_term_power - Check for term power errors
5524 * @ioa_cfg: ioa config struct
5525 * @mode_pages: IOAFP mode pages buffer
5527 * Check the IOAFP's mode page 28 for term power errors
5532 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5533 struct ipr_mode_pages *mode_pages)
5537 struct ipr_dev_bus_entry *bus;
5538 struct ipr_mode_page28 *mode_page;
5540 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5541 sizeof(struct ipr_mode_page28));
5543 entry_length = mode_page->entry_length;
5545 bus = mode_page->bus;
5547 for (i = 0; i < mode_page->num_entries; i++) {
5548 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5549 dev_err(&ioa_cfg->pdev->dev,
5550 "Term power is absent on scsi bus %d\n",
5554 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5559 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5560 * @ioa_cfg: ioa config struct
5562 * Looks through the config table checking for SES devices. If
5563 * the SES device is in the SES table indicating a maximum SCSI
5564 * bus speed, the speed is limited for the bus.
5569 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5574 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5575 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5576 ioa_cfg->bus_attr[i].bus_width);
5578 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5579 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5584 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5585 * @ioa_cfg: ioa config struct
5586 * @mode_pages: mode page 28 buffer
5588 * Updates mode page 28 based on driver configuration
5593 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5594 struct ipr_mode_pages *mode_pages)
5596 int i, entry_length;
5597 struct ipr_dev_bus_entry *bus;
5598 struct ipr_bus_attributes *bus_attr;
5599 struct ipr_mode_page28 *mode_page;
5601 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5602 sizeof(struct ipr_mode_page28));
5604 entry_length = mode_page->entry_length;
5606 /* Loop for each device bus entry */
5607 for (i = 0, bus = mode_page->bus;
5608 i < mode_page->num_entries;
5609 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5610 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5611 dev_err(&ioa_cfg->pdev->dev,
5612 "Invalid resource address reported: 0x%08X\n",
5613 IPR_GET_PHYS_LOC(bus->res_addr));
5617 bus_attr = &ioa_cfg->bus_attr[i];
5618 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5619 bus->bus_width = bus_attr->bus_width;
5620 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5621 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5622 if (bus_attr->qas_enabled)
5623 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5625 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5630 * ipr_build_mode_select - Build a mode select command
5631 * @ipr_cmd: ipr command struct
5632 * @res_handle: resource handle to send command to
5633 * @parm: Byte 2 of Mode Sense command
5634 * @dma_addr: DMA buffer address
5635 * @xfer_len: data transfer length
5640 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5641 __be32 res_handle, u8 parm, u32 dma_addr,
5644 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5645 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5647 ioarcb->res_handle = res_handle;
5648 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5649 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5650 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5651 ioarcb->cmd_pkt.cdb[1] = parm;
5652 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5654 ioadl->flags_and_data_len =
5655 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5656 ioadl->address = cpu_to_be32(dma_addr);
5657 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5658 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5662 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5663 * @ipr_cmd: ipr command struct
5665 * This function sets up the SCSI bus attributes and sends
5666 * a Mode Select for Page 28 to activate them.
5671 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5674 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5678 ipr_scsi_bus_speed_limit(ioa_cfg);
5679 ipr_check_term_power(ioa_cfg, mode_pages);
5680 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5681 length = mode_pages->hdr.length + 1;
5682 mode_pages->hdr.length = 0;
5684 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5685 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5688 ipr_cmd->job_step = ipr_setup_write_cache;
5689 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5692 return IPR_RC_JOB_RETURN;
5696 * ipr_build_mode_sense - Builds a mode sense command
5697 * @ipr_cmd: ipr command struct
5698 * @res: resource entry struct
5699 * @parm: Byte 2 of mode sense command
5700 * @dma_addr: DMA address of mode sense buffer
5701 * @xfer_len: Size of DMA buffer
5706 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5708 u8 parm, u32 dma_addr, u8 xfer_len)
5710 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5711 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5713 ioarcb->res_handle = res_handle;
5714 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5715 ioarcb->cmd_pkt.cdb[2] = parm;
5716 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5717 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5719 ioadl->flags_and_data_len =
5720 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5721 ioadl->address = cpu_to_be32(dma_addr);
5722 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5723 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5727 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5728 * @ipr_cmd: ipr command struct
5730 * This function handles the failure of an IOA bringup command.
5735 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5737 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5738 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5740 dev_err(&ioa_cfg->pdev->dev,
5741 "0x%02X failed with IOASC: 0x%08X\n",
5742 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5744 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5745 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5746 return IPR_RC_JOB_RETURN;
5750 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5751 * @ipr_cmd: ipr command struct
5753 * This function handles the failure of a Mode Sense to the IOAFP.
5754 * Some adapters do not handle all mode pages.
5757 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5759 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5761 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5763 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5764 ipr_cmd->job_step = ipr_setup_write_cache;
5765 return IPR_RC_JOB_CONTINUE;
5768 return ipr_reset_cmd_failed(ipr_cmd);
5772 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5773 * @ipr_cmd: ipr command struct
5775 * This function send a Page 28 mode sense to the IOA to
5776 * retrieve SCSI bus attributes.
5781 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5786 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5787 0x28, ioa_cfg->vpd_cbs_dma +
5788 offsetof(struct ipr_misc_cbs, mode_pages),
5789 sizeof(struct ipr_mode_pages));
5791 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5792 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5794 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5797 return IPR_RC_JOB_RETURN;
5801 * ipr_init_res_table - Initialize the resource table
5802 * @ipr_cmd: ipr command struct
5804 * This function looks through the existing resource table, comparing
5805 * it with the config table. This function will take care of old/new
5806 * devices and schedule adding/removing them from the mid-layer
5810 * IPR_RC_JOB_CONTINUE
5812 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5814 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5815 struct ipr_resource_entry *res, *temp;
5816 struct ipr_config_table_entry *cfgte;
5821 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5822 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5824 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5825 list_move_tail(&res->queue, &old_res);
5827 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5828 cfgte = &ioa_cfg->cfg_table->dev[i];
5831 list_for_each_entry_safe(res, temp, &old_res, queue) {
5832 if (!memcmp(&res->cfgte.res_addr,
5833 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5834 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5841 if (list_empty(&ioa_cfg->free_res_q)) {
5842 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5847 res = list_entry(ioa_cfg->free_res_q.next,
5848 struct ipr_resource_entry, queue);
5849 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5850 ipr_init_res_entry(res);
5855 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5858 list_for_each_entry_safe(res, temp, &old_res, queue) {
5860 res->del_from_ml = 1;
5861 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5862 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5864 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5868 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5871 return IPR_RC_JOB_CONTINUE;
5875 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5876 * @ipr_cmd: ipr command struct
5878 * This function sends a Query IOA Configuration command
5879 * to the adapter to retrieve the IOA configuration table.
5884 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5886 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5887 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5888 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5889 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5892 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5893 ucode_vpd->major_release, ucode_vpd->card_type,
5894 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5895 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5896 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5898 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5899 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5900 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5902 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5903 ioarcb->read_data_transfer_length =
5904 cpu_to_be32(sizeof(struct ipr_config_table));
5906 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5907 ioadl->flags_and_data_len =
5908 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5910 ipr_cmd->job_step = ipr_init_res_table;
5912 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5915 return IPR_RC_JOB_RETURN;
5919 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5920 * @ipr_cmd: ipr command struct
5922 * This utility function sends an inquiry to the adapter.
5927 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5928 u32 dma_addr, u8 xfer_len)
5930 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5931 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5934 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5935 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5937 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5938 ioarcb->cmd_pkt.cdb[1] = flags;
5939 ioarcb->cmd_pkt.cdb[2] = page;
5940 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5942 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5943 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5945 ioadl->address = cpu_to_be32(dma_addr);
5946 ioadl->flags_and_data_len =
5947 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5949 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5954 * ipr_inquiry_page_supported - Is the given inquiry page supported
5955 * @page0: inquiry page 0 buffer
5958 * This function determines if the specified inquiry page is supported.
5961 * 1 if page is supported / 0 if not
5963 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5967 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5968 if (page0->page[i] == page)
5975 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5976 * @ipr_cmd: ipr command struct
5978 * This function sends a Page 3 inquiry to the adapter
5979 * to retrieve software VPD information.
5982 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5984 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5986 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5987 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5991 if (!ipr_inquiry_page_supported(page0, 1))
5992 ioa_cfg->cache_state = CACHE_NONE;
5994 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5996 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5997 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5998 sizeof(struct ipr_inquiry_page3));
6001 return IPR_RC_JOB_RETURN;
6005 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6006 * @ipr_cmd: ipr command struct
6008 * This function sends a Page 0 inquiry to the adapter
6009 * to retrieve supported inquiry pages.
6012 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6014 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6016 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6021 /* Grab the type out of the VPD and store it away */
6022 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6024 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6026 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6028 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6029 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6030 sizeof(struct ipr_inquiry_page0));
6033 return IPR_RC_JOB_RETURN;
6037 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6038 * @ipr_cmd: ipr command struct
6040 * This function sends a standard inquiry to the adapter.
6045 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6047 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6050 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6052 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6053 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6054 sizeof(struct ipr_ioa_vpd));
6057 return IPR_RC_JOB_RETURN;
6061 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6062 * @ipr_cmd: ipr command struct
6064 * This function send an Identify Host Request Response Queue
6065 * command to establish the HRRQ with the adapter.
6070 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6072 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6073 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6076 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6078 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6079 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6081 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6082 ioarcb->cmd_pkt.cdb[2] =
6083 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6084 ioarcb->cmd_pkt.cdb[3] =
6085 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6086 ioarcb->cmd_pkt.cdb[4] =
6087 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6088 ioarcb->cmd_pkt.cdb[5] =
6089 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6090 ioarcb->cmd_pkt.cdb[7] =
6091 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6092 ioarcb->cmd_pkt.cdb[8] =
6093 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6095 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6097 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6100 return IPR_RC_JOB_RETURN;
6104 * ipr_reset_timer_done - Adapter reset timer function
6105 * @ipr_cmd: ipr command struct
6107 * Description: This function is used in adapter reset processing
6108 * for timing events. If the reset_cmd pointer in the IOA
6109 * config struct is not this adapter's we are doing nested
6110 * resets and fail_all_ops will take care of freeing the
6116 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6118 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6119 unsigned long lock_flags = 0;
6121 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6123 if (ioa_cfg->reset_cmd == ipr_cmd) {
6124 list_del(&ipr_cmd->queue);
6125 ipr_cmd->done(ipr_cmd);
6128 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6132 * ipr_reset_start_timer - Start a timer for adapter reset job
6133 * @ipr_cmd: ipr command struct
6134 * @timeout: timeout value
6136 * Description: This function is used in adapter reset processing
6137 * for timing events. If the reset_cmd pointer in the IOA
6138 * config struct is not this adapter's we are doing nested
6139 * resets and fail_all_ops will take care of freeing the
6145 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6146 unsigned long timeout)
6148 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6149 ipr_cmd->done = ipr_reset_ioa_job;
6151 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6152 ipr_cmd->timer.expires = jiffies + timeout;
6153 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6154 add_timer(&ipr_cmd->timer);
6158 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6159 * @ioa_cfg: ioa cfg struct
6164 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6166 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6168 /* Initialize Host RRQ pointers */
6169 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6170 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6171 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6172 ioa_cfg->toggle_bit = 1;
6174 /* Zero out config table */
6175 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6179 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6180 * @ipr_cmd: ipr command struct
6182 * This function reinitializes some control blocks and
6183 * enables destructive diagnostics on the adapter.
6188 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6190 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6191 volatile u32 int_reg;
6194 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6195 ipr_init_ioa_mem(ioa_cfg);
6197 ioa_cfg->allow_interrupts = 1;
6198 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6200 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6201 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6202 ioa_cfg->regs.clr_interrupt_mask_reg);
6203 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6204 return IPR_RC_JOB_CONTINUE;
6207 /* Enable destructive diagnostics on IOA */
6208 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6210 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6211 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6213 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6215 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6216 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6217 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6218 ipr_cmd->done = ipr_reset_ioa_job;
6219 add_timer(&ipr_cmd->timer);
6220 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6223 return IPR_RC_JOB_RETURN;
6227 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6228 * @ipr_cmd: ipr command struct
6230 * This function is invoked when an adapter dump has run out
6231 * of processing time.
6234 * IPR_RC_JOB_CONTINUE
6236 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6238 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6240 if (ioa_cfg->sdt_state == GET_DUMP)
6241 ioa_cfg->sdt_state = ABORT_DUMP;
6243 ipr_cmd->job_step = ipr_reset_alert;
6245 return IPR_RC_JOB_CONTINUE;
6249 * ipr_unit_check_no_data - Log a unit check/no data error log
6250 * @ioa_cfg: ioa config struct
6252 * Logs an error indicating the adapter unit checked, but for some
6253 * reason, we were unable to fetch the unit check buffer.
6258 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6260 ioa_cfg->errors_logged++;
6261 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6265 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6266 * @ioa_cfg: ioa config struct
6268 * Fetches the unit check buffer from the adapter by clocking the data
6269 * through the mailbox register.
6274 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6276 unsigned long mailbox;
6277 struct ipr_hostrcb *hostrcb;
6278 struct ipr_uc_sdt sdt;
6281 mailbox = readl(ioa_cfg->ioa_mailbox);
6283 if (!ipr_sdt_is_fmt2(mailbox)) {
6284 ipr_unit_check_no_data(ioa_cfg);
6288 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6289 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6290 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6292 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6293 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6294 ipr_unit_check_no_data(ioa_cfg);
6298 /* Find length of the first sdt entry (UC buffer) */
6299 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6300 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6302 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6303 struct ipr_hostrcb, queue);
6304 list_del(&hostrcb->queue);
6305 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6307 rc = ipr_get_ldump_data_section(ioa_cfg,
6308 be32_to_cpu(sdt.entry[0].bar_str_offset),
6309 (__be32 *)&hostrcb->hcam,
6310 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6313 ipr_handle_log_data(ioa_cfg, hostrcb);
6315 ipr_unit_check_no_data(ioa_cfg);
6317 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6321 * ipr_reset_restore_cfg_space - Restore PCI config space.
6322 * @ipr_cmd: ipr command struct
6324 * Description: This function restores the saved PCI config space of
6325 * the adapter, fails all outstanding ops back to the callers, and
6326 * fetches the dump/unit check if applicable to this reset.
6329 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6331 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6333 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6337 rc = pci_restore_state(ioa_cfg->pdev);
6339 if (rc != PCIBIOS_SUCCESSFUL) {
6340 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6341 return IPR_RC_JOB_CONTINUE;
6344 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6345 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6346 return IPR_RC_JOB_CONTINUE;
6349 ipr_fail_all_ops(ioa_cfg);
6351 if (ioa_cfg->ioa_unit_checked) {
6352 ioa_cfg->ioa_unit_checked = 0;
6353 ipr_get_unit_check_buffer(ioa_cfg);
6354 ipr_cmd->job_step = ipr_reset_alert;
6355 ipr_reset_start_timer(ipr_cmd, 0);
6356 return IPR_RC_JOB_RETURN;
6359 if (ioa_cfg->in_ioa_bringdown) {
6360 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6362 ipr_cmd->job_step = ipr_reset_enable_ioa;
6364 if (GET_DUMP == ioa_cfg->sdt_state) {
6365 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6366 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6367 schedule_work(&ioa_cfg->work_q);
6368 return IPR_RC_JOB_RETURN;
6373 return IPR_RC_JOB_CONTINUE;
6377 * ipr_reset_bist_done - BIST has completed on the adapter.
6378 * @ipr_cmd: ipr command struct
6380 * Description: Unblock config space and resume the reset process.
6383 * IPR_RC_JOB_CONTINUE
6385 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6388 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6389 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6391 return IPR_RC_JOB_CONTINUE;
6395 * ipr_reset_start_bist - Run BIST on the adapter.
6396 * @ipr_cmd: ipr command struct
6398 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6401 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6403 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6405 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6409 pci_block_user_cfg_access(ioa_cfg->pdev);
6410 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6412 if (rc != PCIBIOS_SUCCESSFUL) {
6413 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6414 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6415 rc = IPR_RC_JOB_CONTINUE;
6417 ipr_cmd->job_step = ipr_reset_bist_done;
6418 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6419 rc = IPR_RC_JOB_RETURN;
6427 * ipr_reset_allowed - Query whether or not IOA can be reset
6428 * @ioa_cfg: ioa config struct
6431 * 0 if reset not allowed / non-zero if reset is allowed
6433 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6435 volatile u32 temp_reg;
6437 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6438 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6442 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6443 * @ipr_cmd: ipr command struct
6445 * Description: This function waits for adapter permission to run BIST,
6446 * then runs BIST. If the adapter does not give permission after a
6447 * reasonable time, we will reset the adapter anyway. The impact of
6448 * resetting the adapter without warning the adapter is the risk of
6449 * losing the persistent error log on the adapter. If the adapter is
6450 * reset while it is writing to the flash on the adapter, the flash
6451 * segment will have bad ECC and be zeroed.
6454 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6456 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6459 int rc = IPR_RC_JOB_RETURN;
6461 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6462 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6463 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6465 ipr_cmd->job_step = ipr_reset_start_bist;
6466 rc = IPR_RC_JOB_CONTINUE;
6473 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6474 * @ipr_cmd: ipr command struct
6476 * Description: This function alerts the adapter that it will be reset.
6477 * If memory space is not currently enabled, proceed directly
6478 * to running BIST on the adapter. The timer must always be started
6479 * so we guarantee we do not run BIST from ipr_isr.
6484 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6491 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6493 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6494 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6495 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6496 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6498 ipr_cmd->job_step = ipr_reset_start_bist;
6501 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6502 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6505 return IPR_RC_JOB_RETURN;
6509 * ipr_reset_ucode_download_done - Microcode download completion
6510 * @ipr_cmd: ipr command struct
6512 * Description: This function unmaps the microcode download buffer.
6515 * IPR_RC_JOB_CONTINUE
6517 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6519 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6520 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6522 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6523 sglist->num_sg, DMA_TO_DEVICE);
6525 ipr_cmd->job_step = ipr_reset_alert;
6526 return IPR_RC_JOB_CONTINUE;
6530 * ipr_reset_ucode_download - Download microcode to the adapter
6531 * @ipr_cmd: ipr command struct
6533 * Description: This function checks to see if it there is microcode
6534 * to download to the adapter. If there is, a download is performed.
6537 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6539 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6541 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6542 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6545 ipr_cmd->job_step = ipr_reset_alert;
6548 return IPR_RC_JOB_CONTINUE;
6550 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6551 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6552 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6553 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6554 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6555 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6556 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6558 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6559 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6561 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6562 IPR_WRITE_BUFFER_TIMEOUT);
6565 return IPR_RC_JOB_RETURN;
6569 * ipr_reset_shutdown_ioa - Shutdown the adapter
6570 * @ipr_cmd: ipr command struct
6572 * Description: This function issues an adapter shutdown of the
6573 * specified type to the specified adapter as part of the
6574 * adapter reset job.
6577 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6579 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6581 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6582 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6583 unsigned long timeout;
6584 int rc = IPR_RC_JOB_CONTINUE;
6587 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6588 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6589 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6590 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6591 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6593 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6594 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6595 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6596 timeout = IPR_INTERNAL_TIMEOUT;
6598 timeout = IPR_SHUTDOWN_TIMEOUT;
6600 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6602 rc = IPR_RC_JOB_RETURN;
6603 ipr_cmd->job_step = ipr_reset_ucode_download;
6605 ipr_cmd->job_step = ipr_reset_alert;
6612 * ipr_reset_ioa_job - Adapter reset job
6613 * @ipr_cmd: ipr command struct
6615 * Description: This function is the job router for the adapter reset job.
6620 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6623 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6626 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6628 if (ioa_cfg->reset_cmd != ipr_cmd) {
6630 * We are doing nested adapter resets and this is
6631 * not the current reset job.
6633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6637 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6638 rc = ipr_cmd->job_step_failed(ipr_cmd);
6639 if (rc == IPR_RC_JOB_RETURN)
6643 ipr_reinit_ipr_cmnd(ipr_cmd);
6644 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6645 rc = ipr_cmd->job_step(ipr_cmd);
6646 } while(rc == IPR_RC_JOB_CONTINUE);
6650 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6651 * @ioa_cfg: ioa config struct
6652 * @job_step: first job step of reset job
6653 * @shutdown_type: shutdown type
6655 * Description: This function will initiate the reset of the given adapter
6656 * starting at the selected job step.
6657 * If the caller needs to wait on the completion of the reset,
6658 * the caller must sleep on the reset_wait_q.
6663 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6664 int (*job_step) (struct ipr_cmnd *),
6665 enum ipr_shutdown_type shutdown_type)
6667 struct ipr_cmnd *ipr_cmd;
6669 ioa_cfg->in_reset_reload = 1;
6670 ioa_cfg->allow_cmds = 0;
6671 scsi_block_requests(ioa_cfg->host);
6673 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6674 ioa_cfg->reset_cmd = ipr_cmd;
6675 ipr_cmd->job_step = job_step;
6676 ipr_cmd->u.shutdown_type = shutdown_type;
6678 ipr_reset_ioa_job(ipr_cmd);
6682 * ipr_initiate_ioa_reset - Initiate an adapter reset
6683 * @ioa_cfg: ioa config struct
6684 * @shutdown_type: shutdown type
6686 * Description: This function will initiate the reset of the given adapter.
6687 * If the caller needs to wait on the completion of the reset,
6688 * the caller must sleep on the reset_wait_q.
6693 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6694 enum ipr_shutdown_type shutdown_type)
6696 if (ioa_cfg->ioa_is_dead)
6699 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6700 ioa_cfg->sdt_state = ABORT_DUMP;
6702 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6703 dev_err(&ioa_cfg->pdev->dev,
6704 "IOA taken offline - error recovery failed\n");
6706 ioa_cfg->reset_retries = 0;
6707 ioa_cfg->ioa_is_dead = 1;
6709 if (ioa_cfg->in_ioa_bringdown) {
6710 ioa_cfg->reset_cmd = NULL;
6711 ioa_cfg->in_reset_reload = 0;
6712 ipr_fail_all_ops(ioa_cfg);
6713 wake_up_all(&ioa_cfg->reset_wait_q);
6715 spin_unlock_irq(ioa_cfg->host->host_lock);
6716 scsi_unblock_requests(ioa_cfg->host);
6717 spin_lock_irq(ioa_cfg->host->host_lock);
6720 ioa_cfg->in_ioa_bringdown = 1;
6721 shutdown_type = IPR_SHUTDOWN_NONE;
6725 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6730 * ipr_reset_freeze - Hold off all I/O activity
6731 * @ipr_cmd: ipr command struct
6733 * Description: If the PCI slot is frozen, hold off all I/O
6734 * activity; then, as soon as the slot is available again,
6735 * initiate an adapter reset.
6737 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6739 /* Disallow new interrupts, avoid loop */
6740 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6741 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6742 ipr_cmd->done = ipr_reset_ioa_job;
6743 return IPR_RC_JOB_RETURN;
6747 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6748 * @pdev: PCI device struct
6750 * Description: This routine is called to tell us that the PCI bus
6751 * is down. Can't do anything here, except put the device driver
6752 * into a holding pattern, waiting for the PCI bus to come back.
6754 static void ipr_pci_frozen(struct pci_dev *pdev)
6756 unsigned long flags = 0;
6757 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6759 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6760 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6765 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6766 * @pdev: PCI device struct
6768 * Description: This routine is called by the pci error recovery
6769 * code after the PCI slot has been reset, just before we
6770 * should resume normal operations.
6772 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6774 unsigned long flags = 0;
6775 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6777 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6778 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6781 return PCI_ERS_RESULT_RECOVERED;
6785 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6786 * @pdev: PCI device struct
6788 * Description: This routine is called when the PCI bus has
6789 * permanently failed.
6791 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6793 unsigned long flags = 0;
6794 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6796 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6797 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6798 ioa_cfg->sdt_state = ABORT_DUMP;
6799 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6800 ioa_cfg->in_ioa_bringdown = 1;
6801 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6802 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6806 * ipr_pci_error_detected - Called when a PCI error is detected.
6807 * @pdev: PCI device struct
6808 * @state: PCI channel state
6810 * Description: Called when a PCI error is detected.
6813 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6815 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6816 pci_channel_state_t state)
6819 case pci_channel_io_frozen:
6820 ipr_pci_frozen(pdev);
6821 return PCI_ERS_RESULT_NEED_RESET;
6822 case pci_channel_io_perm_failure:
6823 ipr_pci_perm_failure(pdev);
6824 return PCI_ERS_RESULT_DISCONNECT;
6829 return PCI_ERS_RESULT_NEED_RESET;
6833 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6834 * @ioa_cfg: ioa cfg struct
6836 * Description: This is the second phase of adapter intialization
6837 * This function takes care of initilizing the adapter to the point
6838 * where it can accept new commands.
6841 * 0 on sucess / -EIO on failure
6843 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6846 unsigned long host_lock_flags = 0;
6849 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6850 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
6851 if (ioa_cfg->needs_hard_reset) {
6852 ioa_cfg->needs_hard_reset = 0;
6853 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6855 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6858 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6859 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6860 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6862 if (ioa_cfg->ioa_is_dead) {
6864 } else if (ipr_invalid_adapter(ioa_cfg)) {
6868 dev_err(&ioa_cfg->pdev->dev,
6869 "Adapter not supported in this hardware configuration.\n");
6872 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6879 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6880 * @ioa_cfg: ioa config struct
6885 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6889 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6890 if (ioa_cfg->ipr_cmnd_list[i])
6891 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6892 ioa_cfg->ipr_cmnd_list[i],
6893 ioa_cfg->ipr_cmnd_list_dma[i]);
6895 ioa_cfg->ipr_cmnd_list[i] = NULL;
6898 if (ioa_cfg->ipr_cmd_pool)
6899 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6901 ioa_cfg->ipr_cmd_pool = NULL;
6905 * ipr_free_mem - Frees memory allocated for an adapter
6906 * @ioa_cfg: ioa cfg struct
6911 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6915 kfree(ioa_cfg->res_entries);
6916 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6917 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6918 ipr_free_cmd_blks(ioa_cfg);
6919 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6920 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6921 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6923 ioa_cfg->cfg_table_dma);
6925 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6926 pci_free_consistent(ioa_cfg->pdev,
6927 sizeof(struct ipr_hostrcb),
6928 ioa_cfg->hostrcb[i],
6929 ioa_cfg->hostrcb_dma[i]);
6932 ipr_free_dump(ioa_cfg);
6933 kfree(ioa_cfg->trace);
6937 * ipr_free_all_resources - Free all allocated resources for an adapter.
6938 * @ipr_cmd: ipr command struct
6940 * This function frees all allocated resources for the
6941 * specified adapter.
6946 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6948 struct pci_dev *pdev = ioa_cfg->pdev;
6951 free_irq(pdev->irq, ioa_cfg);
6952 iounmap(ioa_cfg->hdw_dma_regs);
6953 pci_release_regions(pdev);
6954 ipr_free_mem(ioa_cfg);
6955 scsi_host_put(ioa_cfg->host);
6956 pci_disable_device(pdev);
6961 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6962 * @ioa_cfg: ioa config struct
6965 * 0 on success / -ENOMEM on allocation failure
6967 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6969 struct ipr_cmnd *ipr_cmd;
6970 struct ipr_ioarcb *ioarcb;
6971 dma_addr_t dma_addr;
6974 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6975 sizeof(struct ipr_cmnd), 8, 0);
6977 if (!ioa_cfg->ipr_cmd_pool)
6980 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6981 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
6984 ipr_free_cmd_blks(ioa_cfg);
6988 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6989 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6990 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6992 ioarcb = &ipr_cmd->ioarcb;
6993 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6994 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6995 ioarcb->write_ioadl_addr =
6996 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6997 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6998 ioarcb->ioasa_host_pci_addr =
6999 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7000 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7001 ipr_cmd->cmd_index = i;
7002 ipr_cmd->ioa_cfg = ioa_cfg;
7003 ipr_cmd->sense_buffer_dma = dma_addr +
7004 offsetof(struct ipr_cmnd, sense_buffer);
7006 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7013 * ipr_alloc_mem - Allocate memory for an adapter
7014 * @ioa_cfg: ioa config struct
7017 * 0 on success / non-zero for error
7019 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7021 struct pci_dev *pdev = ioa_cfg->pdev;
7022 int i, rc = -ENOMEM;
7025 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7026 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7028 if (!ioa_cfg->res_entries)
7031 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7032 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7034 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7035 sizeof(struct ipr_misc_cbs),
7036 &ioa_cfg->vpd_cbs_dma);
7038 if (!ioa_cfg->vpd_cbs)
7039 goto out_free_res_entries;
7041 if (ipr_alloc_cmd_blks(ioa_cfg))
7042 goto out_free_vpd_cbs;
7044 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7045 sizeof(u32) * IPR_NUM_CMD_BLKS,
7046 &ioa_cfg->host_rrq_dma);
7048 if (!ioa_cfg->host_rrq)
7049 goto out_ipr_free_cmd_blocks;
7051 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7052 sizeof(struct ipr_config_table),
7053 &ioa_cfg->cfg_table_dma);
7055 if (!ioa_cfg->cfg_table)
7056 goto out_free_host_rrq;
7058 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7059 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7060 sizeof(struct ipr_hostrcb),
7061 &ioa_cfg->hostrcb_dma[i]);
7063 if (!ioa_cfg->hostrcb[i])
7064 goto out_free_hostrcb_dma;
7066 ioa_cfg->hostrcb[i]->hostrcb_dma =
7067 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7068 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7069 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7072 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7073 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7075 if (!ioa_cfg->trace)
7076 goto out_free_hostrcb_dma;
7083 out_free_hostrcb_dma:
7085 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7086 ioa_cfg->hostrcb[i],
7087 ioa_cfg->hostrcb_dma[i]);
7089 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7090 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7092 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7093 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7094 out_ipr_free_cmd_blocks:
7095 ipr_free_cmd_blks(ioa_cfg);
7097 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7098 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7099 out_free_res_entries:
7100 kfree(ioa_cfg->res_entries);
7105 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7106 * @ioa_cfg: ioa config struct
7111 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7115 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7116 ioa_cfg->bus_attr[i].bus = i;
7117 ioa_cfg->bus_attr[i].qas_enabled = 0;
7118 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7119 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7120 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7122 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7127 * ipr_init_ioa_cfg - Initialize IOA config struct
7128 * @ioa_cfg: ioa config struct
7129 * @host: scsi host struct
7130 * @pdev: PCI dev struct
7135 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7136 struct Scsi_Host *host, struct pci_dev *pdev)
7138 const struct ipr_interrupt_offsets *p;
7139 struct ipr_interrupts *t;
7142 ioa_cfg->host = host;
7143 ioa_cfg->pdev = pdev;
7144 ioa_cfg->log_level = ipr_log_level;
7145 ioa_cfg->doorbell = IPR_DOORBELL;
7146 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7147 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7148 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7149 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7150 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7151 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7152 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7153 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7155 INIT_LIST_HEAD(&ioa_cfg->free_q);
7156 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7157 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7158 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7159 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7160 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7161 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7162 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7163 ioa_cfg->sdt_state = INACTIVE;
7164 if (ipr_enable_cache)
7165 ioa_cfg->cache_state = CACHE_ENABLED;
7167 ioa_cfg->cache_state = CACHE_DISABLED;
7169 ipr_initialize_bus_attr(ioa_cfg);
7171 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7172 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7173 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7174 host->unique_id = host->host_no;
7175 host->max_cmd_len = IPR_MAX_CDB_LEN;
7176 pci_set_drvdata(pdev, ioa_cfg);
7178 p = &ioa_cfg->chip_cfg->regs;
7180 base = ioa_cfg->hdw_dma_regs;
7182 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7183 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7184 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7185 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7186 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7187 t->ioarrin_reg = base + p->ioarrin_reg;
7188 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7189 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7190 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7194 * ipr_get_chip_cfg - Find adapter chip configuration
7195 * @dev_id: PCI device id struct
7198 * ptr to chip config on success / NULL on failure
7200 static const struct ipr_chip_cfg_t * __devinit
7201 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7205 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7206 if (ipr_chip[i].vendor == dev_id->vendor &&
7207 ipr_chip[i].device == dev_id->device)
7208 return ipr_chip[i].cfg;
7213 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7214 * @pdev: PCI device struct
7215 * @dev_id: PCI device id struct
7218 * 0 on success / non-zero on failure
7220 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7221 const struct pci_device_id *dev_id)
7223 struct ipr_ioa_cfg *ioa_cfg;
7224 struct Scsi_Host *host;
7225 unsigned long ipr_regs_pci;
7226 void __iomem *ipr_regs;
7227 int rc = PCIBIOS_SUCCESSFUL;
7228 volatile u32 mask, uproc;
7232 if ((rc = pci_enable_device(pdev))) {
7233 dev_err(&pdev->dev, "Cannot enable adapter\n");
7237 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7239 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7242 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7247 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7248 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7249 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7250 sata_port_info.flags, &ipr_sata_ops);
7252 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7254 if (!ioa_cfg->chip_cfg) {
7255 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7256 dev_id->vendor, dev_id->device);
7257 goto out_scsi_host_put;
7260 if (ipr_transop_timeout)
7261 ioa_cfg->transop_timeout = ipr_transop_timeout;
7262 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7263 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7265 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7267 ipr_regs_pci = pci_resource_start(pdev, 0);
7269 rc = pci_request_regions(pdev, IPR_NAME);
7272 "Couldn't register memory range of registers\n");
7273 goto out_scsi_host_put;
7276 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7280 "Couldn't map memory range of registers\n");
7282 goto out_release_regions;
7285 ioa_cfg->hdw_dma_regs = ipr_regs;
7286 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7287 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7289 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7291 pci_set_master(pdev);
7293 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7295 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7299 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7300 ioa_cfg->chip_cfg->cache_line_size);
7302 if (rc != PCIBIOS_SUCCESSFUL) {
7303 dev_err(&pdev->dev, "Write of cache line size failed\n");
7308 /* Save away PCI config space for use following IOA reset */
7309 rc = pci_save_state(pdev);
7311 if (rc != PCIBIOS_SUCCESSFUL) {
7312 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7317 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7320 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7323 rc = ipr_alloc_mem(ioa_cfg);
7326 "Couldn't allocate enough memory for device driver!\n");
7331 * If HRRQ updated interrupt is not masked, or reset alert is set,
7332 * the card is in an unknown state and needs a hard reset
7334 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7335 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7336 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7337 ioa_cfg->needs_hard_reset = 1;
7339 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7340 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7343 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7348 spin_lock(&ipr_driver_lock);
7349 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7350 spin_unlock(&ipr_driver_lock);
7357 ipr_free_mem(ioa_cfg);
7360 out_release_regions:
7361 pci_release_regions(pdev);
7363 scsi_host_put(host);
7365 pci_disable_device(pdev);
7370 * ipr_scan_vsets - Scans for VSET devices
7371 * @ioa_cfg: ioa config struct
7373 * Description: Since the VSET resources do not follow SAM in that we can have
7374 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7379 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7383 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7384 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7385 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7389 * ipr_initiate_ioa_bringdown - Bring down an adapter
7390 * @ioa_cfg: ioa config struct
7391 * @shutdown_type: shutdown type
7393 * Description: This function will initiate bringing down the adapter.
7394 * This consists of issuing an IOA shutdown to the adapter
7395 * to flush the cache, and running BIST.
7396 * If the caller needs to wait on the completion of the reset,
7397 * the caller must sleep on the reset_wait_q.
7402 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7403 enum ipr_shutdown_type shutdown_type)
7406 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7407 ioa_cfg->sdt_state = ABORT_DUMP;
7408 ioa_cfg->reset_retries = 0;
7409 ioa_cfg->in_ioa_bringdown = 1;
7410 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7415 * __ipr_remove - Remove a single adapter
7416 * @pdev: pci device struct
7418 * Adapter hot plug remove entry point.
7423 static void __ipr_remove(struct pci_dev *pdev)
7425 unsigned long host_lock_flags = 0;
7426 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7429 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7430 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7432 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7433 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7434 flush_scheduled_work();
7435 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7437 spin_lock(&ipr_driver_lock);
7438 list_del(&ioa_cfg->queue);
7439 spin_unlock(&ipr_driver_lock);
7441 if (ioa_cfg->sdt_state == ABORT_DUMP)
7442 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7443 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7445 ipr_free_all_resources(ioa_cfg);
7451 * ipr_remove - IOA hot plug remove entry point
7452 * @pdev: pci device struct
7454 * Adapter hot plug remove entry point.
7459 static void ipr_remove(struct pci_dev *pdev)
7461 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7465 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7467 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7469 scsi_remove_host(ioa_cfg->host);
7477 * ipr_probe - Adapter hot plug add entry point
7480 * 0 on success / non-zero on failure
7482 static int __devinit ipr_probe(struct pci_dev *pdev,
7483 const struct pci_device_id *dev_id)
7485 struct ipr_ioa_cfg *ioa_cfg;
7488 rc = ipr_probe_ioa(pdev, dev_id);
7493 ioa_cfg = pci_get_drvdata(pdev);
7494 rc = ipr_probe_ioa_part2(ioa_cfg);
7501 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7508 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7512 scsi_remove_host(ioa_cfg->host);
7517 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7521 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7523 scsi_remove_host(ioa_cfg->host);
7528 scsi_scan_host(ioa_cfg->host);
7529 ipr_scan_vsets(ioa_cfg);
7530 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7531 ioa_cfg->allow_ml_add_del = 1;
7532 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7533 schedule_work(&ioa_cfg->work_q);
7538 * ipr_shutdown - Shutdown handler.
7539 * @pdev: pci device struct
7541 * This function is invoked upon system shutdown/reboot. It will issue
7542 * an adapter shutdown to the adapter to flush the write cache.
7547 static void ipr_shutdown(struct pci_dev *pdev)
7549 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7550 unsigned long lock_flags = 0;
7552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7553 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7555 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7558 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7559 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7560 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7561 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7563 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7565 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7567 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7568 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7569 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7570 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7571 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7572 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7573 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7574 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7575 IPR_USE_LONG_TRANSOP_TIMEOUT },
7576 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7577 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7578 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7579 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7580 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7581 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7582 IPR_USE_LONG_TRANSOP_TIMEOUT },
7583 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7584 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7585 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7586 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7587 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7588 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7589 IPR_USE_LONG_TRANSOP_TIMEOUT },
7590 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7591 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0, 0 },
7592 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7593 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7594 IPR_USE_LONG_TRANSOP_TIMEOUT },
7595 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7596 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7597 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7598 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7599 IPR_USE_LONG_TRANSOP_TIMEOUT },
7600 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7601 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7602 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7603 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7604 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7605 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7606 IPR_USE_LONG_TRANSOP_TIMEOUT },
7607 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7608 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7609 IPR_USE_LONG_TRANSOP_TIMEOUT },
7610 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7611 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7612 IPR_USE_LONG_TRANSOP_TIMEOUT },
7615 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7617 static struct pci_error_handlers ipr_err_handler = {
7618 .error_detected = ipr_pci_error_detected,
7619 .slot_reset = ipr_pci_slot_reset,
7622 static struct pci_driver ipr_driver = {
7624 .id_table = ipr_pci_table,
7626 .remove = ipr_remove,
7627 .shutdown = ipr_shutdown,
7628 .err_handler = &ipr_err_handler,
7632 * ipr_init - Module entry point
7635 * 0 on success / negative value on failure
7637 static int __init ipr_init(void)
7639 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7640 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7642 return pci_register_driver(&ipr_driver);
7646 * ipr_exit - Module unload
7648 * Module unload entry point.
7653 static void __exit ipr_exit(void)
7655 pci_unregister_driver(&ipr_driver);
7658 module_init(ipr_init);
7659 module_exit(ipr_exit);