]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - drivers/scsi/ipr.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[SCSI] ipr: Disk remove path cleanup
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
CommitLineData
1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
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.
12 *
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.
17 *
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
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
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
35 *
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
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57#include <linux/config.h>
58#include <linux/fs.h>
59#include <linux/init.h>
60#include <linux/types.h>
61#include <linux/errno.h>
62#include <linux/kernel.h>
63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
82#include <scsi/scsi_request.h>
83#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
62275040 94static unsigned int ipr_enable_cache = 1;
d3c74871 95static unsigned int ipr_debug = 0;
32d29776 96static int ipr_auto_create = 1;
1da177e4
LT		 97static DEFINE_SPINLOCK(ipr_driver_lock);
98
99/* This table describes the differences between DMA controller chips */
100static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
86f51436 101 { /* Gemstone, Citrine, and Obsidian */
1da177e4
LT		 102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131};
132
133static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436
BK		 136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
1da177e4
LT		 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140};
141
142static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144};
145
146MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148module_param_named(max_speed, ipr_max_speed, uint, 0);
149MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150module_param_named(log_level, ipr_log_level, uint, 0);
151MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152module_param_named(testmode, ipr_testmode, int, 0);
153MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154module_param_named(fastfail, ipr_fastfail, int, 0);
155MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
62275040
BK		 158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
32d29776
BK		 162module_param_named(auto_create, ipr_auto_create, int, 0);
163MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
1da177e4
LT		 164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
167static const char *ipr_gpdd_dev_end_states[] = {
168 "Command complete",
169 "Terminated by host",
170 "Terminated by device reset",
171 "Terminated by bus reset",
172 "Unknown",
173 "Command not started"
174};
175
176static const char *ipr_gpdd_dev_bus_phases[] = {
177 "Bus free",
178 "Arbitration",
179 "Selection",
180 "Message out",
181 "Command",
182 "Message in",
183 "Data out",
184 "Data in",
185 "Status",
186 "Reselection",
187 "Unknown"
188};
189
190/* A constant array of IOASCs/URCs/Error Messages */
191static const
192struct ipr_error_table_t ipr_error_table[] = {
193 {0x00000000, 1, 1,
194 "8155: An unknown error was received"},
195 {0x00330000, 0, 0,
196 "Soft underlength error"},
197 {0x005A0000, 0, 0,
198 "Command to be cancelled not found"},
199 {0x00808000, 0, 0,
200 "Qualified success"},
201 {0x01080000, 1, 1,
202 "FFFE: Soft device bus error recovered by the IOA"},
203 {0x01170600, 0, 1,
204 "FFF9: Device sector reassign successful"},
205 {0x01170900, 0, 1,
206 "FFF7: Media error recovered by device rewrite procedures"},
207 {0x01180200, 0, 1,
208 "7001: IOA sector reassignment successful"},
209 {0x01180500, 0, 1,
210 "FFF9: Soft media error. Sector reassignment recommended"},
211 {0x01180600, 0, 1,
212 "FFF7: Media error recovered by IOA rewrite procedures"},
213 {0x01418000, 0, 1,
214 "FF3D: Soft PCI bus error recovered by the IOA"},
215 {0x01440000, 1, 1,
216 "FFF6: Device hardware error recovered by the IOA"},
217 {0x01448100, 0, 1,
218 "FFF6: Device hardware error recovered by the device"},
219 {0x01448200, 1, 1,
220 "FF3D: Soft IOA error recovered by the IOA"},
221 {0x01448300, 0, 1,
222 "FFFA: Undefined device response recovered by the IOA"},
223 {0x014A0000, 1, 1,
224 "FFF6: Device bus error, message or command phase"},
225 {0x015D0000, 0, 1,
226 "FFF6: Failure prediction threshold exceeded"},
227 {0x015D9200, 0, 1,
228 "8009: Impending cache battery pack failure"},
229 {0x02040400, 0, 0,
230 "34FF: Disk device format in progress"},
231 {0x023F0000, 0, 0,
232 "Synchronization required"},
233 {0x024E0000, 0, 0,
234 "No ready, IOA shutdown"},
235 {0x025A0000, 0, 0,
236 "Not ready, IOA has been shutdown"},
237 {0x02670100, 0, 1,
238 "3020: Storage subsystem configuration error"},
239 {0x03110B00, 0, 0,
240 "FFF5: Medium error, data unreadable, recommend reassign"},
241 {0x03110C00, 0, 0,
242 "7000: Medium error, data unreadable, do not reassign"},
243 {0x03310000, 0, 1,
244 "FFF3: Disk media format bad"},
245 {0x04050000, 0, 1,
246 "3002: Addressed device failed to respond to selection"},
247 {0x04080000, 1, 1,
248 "3100: Device bus error"},
249 {0x04080100, 0, 1,
250 "3109: IOA timed out a device command"},
251 {0x04088000, 0, 0,
252 "3120: SCSI bus is not operational"},
253 {0x04118000, 0, 1,
254 "9000: IOA reserved area data check"},
255 {0x04118100, 0, 1,
256 "9001: IOA reserved area invalid data pattern"},
257 {0x04118200, 0, 1,
258 "9002: IOA reserved area LRC error"},
259 {0x04320000, 0, 1,
260 "102E: Out of alternate sectors for disk storage"},
261 {0x04330000, 1, 1,
262 "FFF4: Data transfer underlength error"},
263 {0x04338000, 1, 1,
264 "FFF4: Data transfer overlength error"},
265 {0x043E0100, 0, 1,
266 "3400: Logical unit failure"},
267 {0x04408500, 0, 1,
268 "FFF4: Device microcode is corrupt"},
269 {0x04418000, 1, 1,
270 "8150: PCI bus error"},
271 {0x04430000, 1, 0,
272 "Unsupported device bus message received"},
273 {0x04440000, 1, 1,
274 "FFF4: Disk device problem"},
275 {0x04448200, 1, 1,
276 "8150: Permanent IOA failure"},
277 {0x04448300, 0, 1,
278 "3010: Disk device returned wrong response to IOA"},
279 {0x04448400, 0, 1,
280 "8151: IOA microcode error"},
281 {0x04448500, 0, 0,
282 "Device bus status error"},
283 {0x04448600, 0, 1,
284 "8157: IOA error requiring IOA reset to recover"},
285 {0x04490000, 0, 0,
286 "Message reject received from the device"},
287 {0x04449200, 0, 1,
288 "8008: A permanent cache battery pack failure occurred"},
289 {0x0444A000, 0, 1,
290 "9090: Disk unit has been modified after the last known status"},
291 {0x0444A200, 0, 1,
292 "9081: IOA detected device error"},
293 {0x0444A300, 0, 1,
294 "9082: IOA detected device error"},
295 {0x044A0000, 1, 1,
296 "3110: Device bus error, message or command phase"},
297 {0x04670400, 0, 1,
298 "9091: Incorrect hardware configuration change has been detected"},
b0df54bb
BK		 299 {0x04678000, 0, 1,
300 "9073: Invalid multi-adapter configuration"},
1da177e4
LT		 301 {0x046E0000, 0, 1,
302 "FFF4: Command to logical unit failed"},
303 {0x05240000, 1, 0,
304 "Illegal request, invalid request type or request packet"},
305 {0x05250000, 0, 0,
306 "Illegal request, invalid resource handle"},
b0df54bb
BK		 307 {0x05258000, 0, 0,
308 "Illegal request, commands not allowed to this device"},
309 {0x05258100, 0, 0,
310 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 311 {0x05260000, 0, 0,
312 "Illegal request, invalid field in parameter list"},
313 {0x05260100, 0, 0,
314 "Illegal request, parameter not supported"},
315 {0x05260200, 0, 0,
316 "Illegal request, parameter value invalid"},
317 {0x052C0000, 0, 0,
318 "Illegal request, command sequence error"},
b0df54bb
BK		 319 {0x052C8000, 1, 0,
320 "Illegal request, dual adapter support not enabled"},
1da177e4
LT		 321 {0x06040500, 0, 1,
322 "9031: Array protection temporarily suspended, protection resuming"},
323 {0x06040600, 0, 1,
324 "9040: Array protection temporarily suspended, protection resuming"},
325 {0x06290000, 0, 1,
326 "FFFB: SCSI bus was reset"},
327 {0x06290500, 0, 0,
328 "FFFE: SCSI bus transition to single ended"},
329 {0x06290600, 0, 0,
330 "FFFE: SCSI bus transition to LVD"},
331 {0x06298000, 0, 1,
332 "FFFB: SCSI bus was reset by another initiator"},
333 {0x063F0300, 0, 1,
334 "3029: A device replacement has occurred"},
335 {0x064C8000, 0, 1,
336 "9051: IOA cache data exists for a missing or failed device"},
b0df54bb
BK		 337 {0x064C8100, 0, 1,
338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
1da177e4
LT		 339 {0x06670100, 0, 1,
340 "9025: Disk unit is not supported at its physical location"},
341 {0x06670600, 0, 1,
342 "3020: IOA detected a SCSI bus configuration error"},
343 {0x06678000, 0, 1,
344 "3150: SCSI bus configuration error"},
b0df54bb
BK		 345 {0x06678100, 0, 1,
346 "9074: Asymmetric advanced function disk configuration"},
1da177e4
LT		 347 {0x06690200, 0, 1,
348 "9041: Array protection temporarily suspended"},
349 {0x06698200, 0, 1,
350 "9042: Corrupt array parity detected on specified device"},
351 {0x066B0200, 0, 1,
352 "9030: Array no longer protected due to missing or failed disk unit"},
b0df54bb
BK		 353 {0x066B8000, 0, 1,
354 "9071: Link operational transition"},
355 {0x066B8100, 0, 1,
356 "9072: Link not operational transition"},
1da177e4
LT		 357 {0x066B8200, 0, 1,
358 "9032: Array exposed but still protected"},
359 {0x07270000, 0, 0,
360 "Failure due to other device"},
361 {0x07278000, 0, 1,
362 "9008: IOA does not support functions expected by devices"},
363 {0x07278100, 0, 1,
364 "9010: Cache data associated with attached devices cannot be found"},
365 {0x07278200, 0, 1,
366 "9011: Cache data belongs to devices other than those attached"},
367 {0x07278400, 0, 1,
368 "9020: Array missing 2 or more devices with only 1 device present"},
369 {0x07278500, 0, 1,
370 "9021: Array missing 2 or more devices with 2 or more devices present"},
371 {0x07278600, 0, 1,
372 "9022: Exposed array is missing a required device"},
373 {0x07278700, 0, 1,
374 "9023: Array member(s) not at required physical locations"},
375 {0x07278800, 0, 1,
376 "9024: Array not functional due to present hardware configuration"},
377 {0x07278900, 0, 1,
378 "9026: Array not functional due to present hardware configuration"},
379 {0x07278A00, 0, 1,
380 "9027: Array is missing a device and parity is out of sync"},
381 {0x07278B00, 0, 1,
382 "9028: Maximum number of arrays already exist"},
383 {0x07278C00, 0, 1,
384 "9050: Required cache data cannot be located for a disk unit"},
385 {0x07278D00, 0, 1,
386 "9052: Cache data exists for a device that has been modified"},
387 {0x07278F00, 0, 1,
388 "9054: IOA resources not available due to previous problems"},
389 {0x07279100, 0, 1,
390 "9092: Disk unit requires initialization before use"},
391 {0x07279200, 0, 1,
392 "9029: Incorrect hardware configuration change has been detected"},
393 {0x07279600, 0, 1,
394 "9060: One or more disk pairs are missing from an array"},
395 {0x07279700, 0, 1,
396 "9061: One or more disks are missing from an array"},
397 {0x07279800, 0, 1,
398 "9062: One or more disks are missing from an array"},
399 {0x07279900, 0, 1,
400 "9063: Maximum number of functional arrays has been exceeded"},
401 {0x0B260000, 0, 0,
402 "Aborted command, invalid descriptor"},
403 {0x0B5A0000, 0, 0,
404 "Command terminated by host"}
405};
406
407static const struct ipr_ses_table_entry ipr_ses_table[] = {
408 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
409 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
410 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
411 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
412 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
413 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
414 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
415 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
416 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
417 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
418 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
419 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
420 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
421};
422
423/*
424 * Function Prototypes
425 */
426static int ipr_reset_alert(struct ipr_cmnd *);
427static void ipr_process_ccn(struct ipr_cmnd *);
428static void ipr_process_error(struct ipr_cmnd *);
429static void ipr_reset_ioa_job(struct ipr_cmnd *);
430static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
431 enum ipr_shutdown_type);
432
433#ifdef CONFIG_SCSI_IPR_TRACE
434/**
435 * ipr_trc_hook - Add a trace entry to the driver trace
436 * @ipr_cmd: ipr command struct
437 * @type: trace type
438 * @add_data: additional data
439 *
440 * Return value:
441 * none
442 **/
443static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
444 u8 type, u32 add_data)
445{
446 struct ipr_trace_entry *trace_entry;
447 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
448
449 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
450 trace_entry->time = jiffies;
451 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
452 trace_entry->type = type;
453 trace_entry->cmd_index = ipr_cmd->cmd_index;
454 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
455 trace_entry->u.add_data = add_data;
456}
457#else
458#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
459#endif
460
461/**
462 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
463 * @ipr_cmd: ipr command struct
464 *
465 * Return value:
466 * none
467 **/
468static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
469{
470 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
471 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
472
473 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
474 ioarcb->write_data_transfer_length = 0;
475 ioarcb->read_data_transfer_length = 0;
476 ioarcb->write_ioadl_len = 0;
477 ioarcb->read_ioadl_len = 0;
478 ioasa->ioasc = 0;
479 ioasa->residual_data_len = 0;
480
481 ipr_cmd->scsi_cmd = NULL;
482 ipr_cmd->sense_buffer[0] = 0;
483 ipr_cmd->dma_use_sg = 0;
484}
485
486/**
487 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
488 * @ipr_cmd: ipr command struct
489 *
490 * Return value:
491 * none
492 **/
493static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
494{
495 ipr_reinit_ipr_cmnd(ipr_cmd);
496 ipr_cmd->u.scratch = 0;
497 ipr_cmd->sibling = NULL;
498 init_timer(&ipr_cmd->timer);
499}
500
501/**
502 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
503 * @ioa_cfg: ioa config struct
504 *
505 * Return value:
506 * pointer to ipr command struct
507 **/
508static
509struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
510{
511 struct ipr_cmnd *ipr_cmd;
512
513 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
514 list_del(&ipr_cmd->queue);
515 ipr_init_ipr_cmnd(ipr_cmd);
516
517 return ipr_cmd;
518}
519
520/**
521 * ipr_unmap_sglist - Unmap scatterlist if mapped
522 * @ioa_cfg: ioa config struct
523 * @ipr_cmd: ipr command struct
524 *
525 * Return value:
526 * nothing
527 **/
528static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
529 struct ipr_cmnd *ipr_cmd)
530{
531 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
532
533 if (ipr_cmd->dma_use_sg) {
534 if (scsi_cmd->use_sg > 0) {
535 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
536 scsi_cmd->use_sg,
537 scsi_cmd->sc_data_direction);
538 } else {
539 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
540 scsi_cmd->request_bufflen,
541 scsi_cmd->sc_data_direction);
542 }
543 }
544}
545
546/**
547 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
548 * @ioa_cfg: ioa config struct
549 * @clr_ints: interrupts to clear
550 *
551 * This function masks all interrupts on the adapter, then clears the
552 * interrupts specified in the mask
553 *
554 * Return value:
555 * none
556 **/
557static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
558 u32 clr_ints)
559{
560 volatile u32 int_reg;
561
562 /* Stop new interrupts */
563 ioa_cfg->allow_interrupts = 0;
564
565 /* Set interrupt mask to stop all new interrupts */
566 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
567
568 /* Clear any pending interrupts */
569 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
570 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
571}
572
573/**
574 * ipr_save_pcix_cmd_reg - Save PCI-X command register
575 * @ioa_cfg: ioa config struct
576 *
577 * Return value:
578 * 0 on success / -EIO on failure
579 **/
580static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
581{
582 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
583
584 if (pcix_cmd_reg == 0) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
590 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
591 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
592 return -EIO;
593 }
594
595 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
596 return 0;
597}
598
599/**
600 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
601 * @ioa_cfg: ioa config struct
602 *
603 * Return value:
604 * 0 on success / -EIO on failure
605 **/
606static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
607{
608 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
609
610 if (pcix_cmd_reg) {
611 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
612 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
613 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
614 return -EIO;
615 }
616 } else {
617 dev_err(&ioa_cfg->pdev->dev,
618 "Failed to setup PCI-X command register\n");
619 return -EIO;
620 }
621
622 return 0;
623}
624
625/**
626 * ipr_scsi_eh_done - mid-layer done function for aborted ops
627 * @ipr_cmd: ipr command struct
628 *
629 * This function is invoked by the interrupt handler for
630 * ops generated by the SCSI mid-layer which are being aborted.
631 *
632 * Return value:
633 * none
634 **/
635static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
636{
637 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
638 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
639
640 scsi_cmd->result |= (DID_ERROR << 16);
641
642 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
643 scsi_cmd->scsi_done(scsi_cmd);
644 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
645}
646
647/**
648 * ipr_fail_all_ops - Fails all outstanding ops.
649 * @ioa_cfg: ioa config struct
650 *
651 * This function fails all outstanding ops.
652 *
653 * Return value:
654 * none
655 **/
656static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
657{
658 struct ipr_cmnd *ipr_cmd, *temp;
659
660 ENTER;
661 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
662 list_del(&ipr_cmd->queue);
663
664 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
665 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
666
667 if (ipr_cmd->scsi_cmd)
668 ipr_cmd->done = ipr_scsi_eh_done;
669
670 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
671 del_timer(&ipr_cmd->timer);
672 ipr_cmd->done(ipr_cmd);
673 }
674
675 LEAVE;
676}
677
678/**
679 * ipr_do_req - Send driver initiated requests.
680 * @ipr_cmd: ipr command struct
681 * @done: done function
682 * @timeout_func: timeout function
683 * @timeout: timeout value
684 *
685 * This function sends the specified command to the adapter with the
686 * timeout given. The done function is invoked on command completion.
687 *
688 * Return value:
689 * none
690 **/
691static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
692 void (*done) (struct ipr_cmnd *),
693 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
694{
695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
696
697 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
698
699 ipr_cmd->done = done;
700
701 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
702 ipr_cmd->timer.expires = jiffies + timeout;
703 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
704
705 add_timer(&ipr_cmd->timer);
706
707 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
708
709 mb();
710 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
711 ioa_cfg->regs.ioarrin_reg);
712}
713
714/**
715 * ipr_internal_cmd_done - Op done function for an internally generated op.
716 * @ipr_cmd: ipr command struct
717 *
718 * This function is the op done function for an internally generated,
719 * blocking op. It simply wakes the sleeping thread.
720 *
721 * Return value:
722 * none
723 **/
724static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
725{
726 if (ipr_cmd->sibling)
727 ipr_cmd->sibling = NULL;
728 else
729 complete(&ipr_cmd->completion);
730}
731
732/**
733 * ipr_send_blocking_cmd - Send command and sleep on its completion.
734 * @ipr_cmd: ipr command struct
735 * @timeout_func: function to invoke if command times out
736 * @timeout: timeout
737 *
738 * Return value:
739 * none
740 **/
741static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
742 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
743 u32 timeout)
744{
745 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
746
747 init_completion(&ipr_cmd->completion);
748 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
749
750 spin_unlock_irq(ioa_cfg->host->host_lock);
751 wait_for_completion(&ipr_cmd->completion);
752 spin_lock_irq(ioa_cfg->host->host_lock);
753}
754
755/**
756 * ipr_send_hcam - Send an HCAM to the adapter.
757 * @ioa_cfg: ioa config struct
758 * @type: HCAM type
759 * @hostrcb: hostrcb struct
760 *
761 * This function will send a Host Controlled Async command to the adapter.
762 * If HCAMs are currently not allowed to be issued to the adapter, it will
763 * place the hostrcb on the free queue.
764 *
765 * Return value:
766 * none
767 **/
768static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
769 struct ipr_hostrcb *hostrcb)
770{
771 struct ipr_cmnd *ipr_cmd;
772 struct ipr_ioarcb *ioarcb;
773
774 if (ioa_cfg->allow_cmds) {
775 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
776 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
777 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
778
779 ipr_cmd->u.hostrcb = hostrcb;
780 ioarcb = &ipr_cmd->ioarcb;
781
782 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
783 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
784 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
785 ioarcb->cmd_pkt.cdb[1] = type;
786 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
787 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
788
789 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
790 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
791 ipr_cmd->ioadl[0].flags_and_data_len =
792 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
793 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
794
795 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
796 ipr_cmd->done = ipr_process_ccn;
797 else
798 ipr_cmd->done = ipr_process_error;
799
800 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
801
802 mb();
803 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
804 ioa_cfg->regs.ioarrin_reg);
805 } else {
806 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
807 }
808}
809
810/**
811 * ipr_init_res_entry - Initialize a resource entry struct.
812 * @res: resource entry struct
813 *
814 * Return value:
815 * none
816 **/
817static void ipr_init_res_entry(struct ipr_resource_entry *res)
818{
ee0a90fa 819 res->needs_sync_complete = 0;
1da177e4
LT		 820 res->in_erp = 0;
821 res->add_to_ml = 0;
822 res->del_from_ml = 0;
823 res->resetting_device = 0;
824 res->sdev = NULL;
825}
826
827/**
828 * ipr_handle_config_change - Handle a config change from the adapter
829 * @ioa_cfg: ioa config struct
830 * @hostrcb: hostrcb
831 *
832 * Return value:
833 * none
834 **/
835static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
836 struct ipr_hostrcb *hostrcb)
837{
838 struct ipr_resource_entry *res = NULL;
839 struct ipr_config_table_entry *cfgte;
840 u32 is_ndn = 1;
841
842 cfgte = &hostrcb->hcam.u.ccn.cfgte;
843
844 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
845 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
846 sizeof(cfgte->res_addr))) {
847 is_ndn = 0;
848 break;
849 }
850 }
851
852 if (is_ndn) {
853 if (list_empty(&ioa_cfg->free_res_q)) {
854 ipr_send_hcam(ioa_cfg,
855 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
856 hostrcb);
857 return;
858 }
859
860 res = list_entry(ioa_cfg->free_res_q.next,
861 struct ipr_resource_entry, queue);
862
863 list_del(&res->queue);
864 ipr_init_res_entry(res);
865 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
866 }
867
868 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
869
870 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
871 if (res->sdev) {
1da177e4 872 res->del_from_ml = 1;
1121b794 873 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 874 if (ioa_cfg->allow_ml_add_del)
875 schedule_work(&ioa_cfg->work_q);
876 } else
877 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
878 } else if (!res->sdev) {
879 res->add_to_ml = 1;
880 if (ioa_cfg->allow_ml_add_del)
881 schedule_work(&ioa_cfg->work_q);
882 }
883
884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
885}
886
887/**
888 * ipr_process_ccn - Op done function for a CCN.
889 * @ipr_cmd: ipr command struct
890 *
891 * This function is the op done function for a configuration
892 * change notification host controlled async from the adapter.
893 *
894 * Return value:
895 * none
896 **/
897static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
898{
899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
900 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
901 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
902
903 list_del(&hostrcb->queue);
904 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
905
906 if (ioasc) {
907 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
908 dev_err(&ioa_cfg->pdev->dev,
909 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
910
911 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
912 } else {
913 ipr_handle_config_change(ioa_cfg, hostrcb);
914 }
915}
916
917/**
918 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 919 * @vpd: vendor/product id/sn struct
1da177e4
LT		 920 *
921 * Return value:
922 * none
923 **/
cfc32139 924static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 925{
926 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
927 + IPR_SERIAL_NUM_LEN];
928
cfc32139
BK		 929 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
930 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 931 IPR_PROD_ID_LEN);
932 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
933 ipr_err("Vendor/Product ID: %s\n", buffer);
934
cfc32139 935 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 936 buffer[IPR_SERIAL_NUM_LEN] = '\0';
937 ipr_err(" Serial Number: %s\n", buffer);
938}
939
ee0f05b8
BK		 940/**
941 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
942 * @vpd: vendor/product id/sn/wwn struct
943 *
944 * Return value:
945 * none
946 **/
947static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
948{
949 ipr_log_vpd(&vpd->vpd);
950 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
951 be32_to_cpu(vpd->wwid[1]));
952}
953
954/**
955 * ipr_log_enhanced_cache_error - Log a cache error.
956 * @ioa_cfg: ioa config struct
957 * @hostrcb: hostrcb struct
958 *
959 * Return value:
960 * none
961 **/
962static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
963 struct ipr_hostrcb *hostrcb)
964{
965 struct ipr_hostrcb_type_12_error *error =
966 &hostrcb->hcam.u.error.u.type_12_error;
967
968 ipr_err("-----Current Configuration-----\n");
969 ipr_err("Cache Directory Card Information:\n");
970 ipr_log_ext_vpd(&error->ioa_vpd);
971 ipr_err("Adapter Card Information:\n");
972 ipr_log_ext_vpd(&error->cfc_vpd);
973
974 ipr_err("-----Expected Configuration-----\n");
975 ipr_err("Cache Directory Card Information:\n");
976 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
977 ipr_err("Adapter Card Information:\n");
978 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
979
980 ipr_err("Additional IOA Data: %08X %08X %08X\n",
981 be32_to_cpu(error->ioa_data[0]),
982 be32_to_cpu(error->ioa_data[1]),
983 be32_to_cpu(error->ioa_data[2]));
984}
985
1da177e4
LT		 986/**
987 * ipr_log_cache_error - Log a cache error.
988 * @ioa_cfg: ioa config struct
989 * @hostrcb: hostrcb struct
990 *
991 * Return value:
992 * none
993 **/
994static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
995 struct ipr_hostrcb *hostrcb)
996{
997 struct ipr_hostrcb_type_02_error *error =
998 &hostrcb->hcam.u.error.u.type_02_error;
999
1000 ipr_err("-----Current Configuration-----\n");
1001 ipr_err("Cache Directory Card Information:\n");
cfc32139 1002 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1003 ipr_err("Adapter Card Information:\n");
cfc32139 1004 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1005
1006 ipr_err("-----Expected Configuration-----\n");
1007 ipr_err("Cache Directory Card Information:\n");
cfc32139 1008 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1009 ipr_err("Adapter Card Information:\n");
cfc32139 1010 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1011
1012 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1013 be32_to_cpu(error->ioa_data[0]),
1014 be32_to_cpu(error->ioa_data[1]),
1015 be32_to_cpu(error->ioa_data[2]));
1016}
1017
ee0f05b8
BK		 1018/**
1019 * ipr_log_enhanced_config_error - Log a configuration error.
1020 * @ioa_cfg: ioa config struct
1021 * @hostrcb: hostrcb struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1027 struct ipr_hostrcb *hostrcb)
1028{
1029 int errors_logged, i;
1030 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1031 struct ipr_hostrcb_type_13_error *error;
1032
1033 error = &hostrcb->hcam.u.error.u.type_13_error;
1034 errors_logged = be32_to_cpu(error->errors_logged);
1035
1036 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1037 be32_to_cpu(error->errors_detected), errors_logged);
1038
1039 dev_entry = error->dev;
1040
1041 for (i = 0; i < errors_logged; i++, dev_entry++) {
1042 ipr_err_separator;
1043
1044 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1045 ipr_log_ext_vpd(&dev_entry->vpd);
1046
1047 ipr_err("-----New Device Information-----\n");
1048 ipr_log_ext_vpd(&dev_entry->new_vpd);
1049
1050 ipr_err("Cache Directory Card Information:\n");
1051 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1052
1053 ipr_err("Adapter Card Information:\n");
1054 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1055 }
1056}
1057
1da177e4
LT		 1058/**
1059 * ipr_log_config_error - Log a configuration error.
1060 * @ioa_cfg: ioa config struct
1061 * @hostrcb: hostrcb struct
1062 *
1063 * Return value:
1064 * none
1065 **/
1066static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1067 struct ipr_hostrcb *hostrcb)
1068{
1069 int errors_logged, i;
1070 struct ipr_hostrcb_device_data_entry *dev_entry;
1071 struct ipr_hostrcb_type_03_error *error;
1072
1073 error = &hostrcb->hcam.u.error.u.type_03_error;
1074 errors_logged = be32_to_cpu(error->errors_logged);
1075
1076 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1077 be32_to_cpu(error->errors_detected), errors_logged);
1078
cfc32139 1079 dev_entry = error->dev;
1da177e4
LT		 1080
1081 for (i = 0; i < errors_logged; i++, dev_entry++) {
1082 ipr_err_separator;
1083
fa15b1f6 1084 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1085 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1086
1087 ipr_err("-----New Device Information-----\n");
cfc32139 1088 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1089
1090 ipr_err("Cache Directory Card Information:\n");
cfc32139 1091 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1092
1093 ipr_err("Adapter Card Information:\n");
cfc32139 1094 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1095
1096 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1097 be32_to_cpu(dev_entry->ioa_data[0]),
1098 be32_to_cpu(dev_entry->ioa_data[1]),
1099 be32_to_cpu(dev_entry->ioa_data[2]),
1100 be32_to_cpu(dev_entry->ioa_data[3]),
1101 be32_to_cpu(dev_entry->ioa_data[4]));
1102 }
1103}
1104
ee0f05b8
BK		 1105/**
1106 * ipr_log_enhanced_array_error - Log an array configuration error.
1107 * @ioa_cfg: ioa config struct
1108 * @hostrcb: hostrcb struct
1109 *
1110 * Return value:
1111 * none
1112 **/
1113static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1114 struct ipr_hostrcb *hostrcb)
1115{
1116 int i, num_entries;
1117 struct ipr_hostrcb_type_14_error *error;
1118 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1119 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1120
1121 error = &hostrcb->hcam.u.error.u.type_14_error;
1122
1123 ipr_err_separator;
1124
1125 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1126 error->protection_level,
1127 ioa_cfg->host->host_no,
1128 error->last_func_vset_res_addr.bus,
1129 error->last_func_vset_res_addr.target,
1130 error->last_func_vset_res_addr.lun);
1131
1132 ipr_err_separator;
1133
1134 array_entry = error->array_member;
1135 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1136 sizeof(error->array_member));
1137
1138 for (i = 0; i < num_entries; i++, array_entry++) {
1139 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1140 continue;
1141
1142 if (be32_to_cpu(error->exposed_mode_adn) == i)
1143 ipr_err("Exposed Array Member %d:\n", i);
1144 else
1145 ipr_err("Array Member %d:\n", i);
1146
1147 ipr_log_ext_vpd(&array_entry->vpd);
1148 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1149 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1150 "Expected Location");
1151
1152 ipr_err_separator;
1153 }
1154}
1155
1da177e4
LT		 1156/**
1157 * ipr_log_array_error - Log an array configuration error.
1158 * @ioa_cfg: ioa config struct
1159 * @hostrcb: hostrcb struct
1160 *
1161 * Return value:
1162 * none
1163 **/
1164static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1165 struct ipr_hostrcb *hostrcb)
1166{
1167 int i;
1168 struct ipr_hostrcb_type_04_error *error;
1169 struct ipr_hostrcb_array_data_entry *array_entry;
1170 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1171
1172 error = &hostrcb->hcam.u.error.u.type_04_error;
1173
1174 ipr_err_separator;
1175
1176 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1177 error->protection_level,
1178 ioa_cfg->host->host_no,
1179 error->last_func_vset_res_addr.bus,
1180 error->last_func_vset_res_addr.target,
1181 error->last_func_vset_res_addr.lun);
1182
1183 ipr_err_separator;
1184
1185 array_entry = error->array_member;
1186
1187 for (i = 0; i < 18; i++) {
cfc32139 1188 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1189 continue;
1190
fa15b1f6 1191 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1192 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1193 else
1da177e4 1194 ipr_err("Array Member %d:\n", i);
1da177e4 1195
cfc32139 1196 ipr_log_vpd(&array_entry->vpd);
1da177e4 1197
fa15b1f6
BK		 1198 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1199 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1200 "Expected Location");
1da177e4
LT		 1201
1202 ipr_err_separator;
1203
1204 if (i == 9)
1205 array_entry = error->array_member2;
1206 else
1207 array_entry++;
1208 }
1209}
1210
1211/**
b0df54bb
BK		 1212 * ipr_log_hex_data - Log additional hex IOA error data.
1213 * @data: IOA error data
1214 * @len: data length
1da177e4
LT		 1215 *
1216 * Return value:
1217 * none
1218 **/
b0df54bb 1219static void ipr_log_hex_data(u32 *data, int len)
1da177e4
LT		 1220{
1221 int i;
1da177e4 1222
b0df54bb 1223 if (len == 0)
1da177e4
LT		 1224 return;
1225
b0df54bb 1226 for (i = 0; i < len / 4; i += 4) {
1da177e4 1227 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1228 be32_to_cpu(data[i]),
1229 be32_to_cpu(data[i+1]),
1230 be32_to_cpu(data[i+2]),
1231 be32_to_cpu(data[i+3]));
1da177e4
LT		 1232 }
1233}
1234
ee0f05b8
BK		 1235/**
1236 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245{
1246 struct ipr_hostrcb_type_17_error *error;
1247
1248 error = &hostrcb->hcam.u.error.u.type_17_error;
1249 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1250
1251 ipr_err("%s\n", error->failure_reason);
1252 ipr_err("Remote Adapter VPD:\n");
1253 ipr_log_ext_vpd(&error->vpd);
1254 ipr_log_hex_data(error->data,
1255 be32_to_cpu(hostrcb->hcam.length) -
1256 (offsetof(struct ipr_hostrcb_error, u) +
1257 offsetof(struct ipr_hostrcb_type_17_error, data)));
1258}
1259
b0df54bb
BK		 1260/**
1261 * ipr_log_dual_ioa_error - Log a dual adapter error.
1262 * @ioa_cfg: ioa config struct
1263 * @hostrcb: hostrcb struct
1264 *
1265 * Return value:
1266 * none
1267 **/
1268static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1269 struct ipr_hostrcb *hostrcb)
1270{
1271 struct ipr_hostrcb_type_07_error *error;
1272
1273 error = &hostrcb->hcam.u.error.u.type_07_error;
1274 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1275
1276 ipr_err("%s\n", error->failure_reason);
1277 ipr_err("Remote Adapter VPD:\n");
1278 ipr_log_vpd(&error->vpd);
1279 ipr_log_hex_data(error->data,
1280 be32_to_cpu(hostrcb->hcam.length) -
1281 (offsetof(struct ipr_hostrcb_error, u) +
1282 offsetof(struct ipr_hostrcb_type_07_error, data)));
1283}
1284
1285/**
1286 * ipr_log_generic_error - Log an adapter error.
1287 * @ioa_cfg: ioa config struct
1288 * @hostrcb: hostrcb struct
1289 *
1290 * Return value:
1291 * none
1292 **/
1293static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1294 struct ipr_hostrcb *hostrcb)
1295{
1296 ipr_log_hex_data(hostrcb->hcam.u.raw.data,
1297 be32_to_cpu(hostrcb->hcam.length));
1298}
1299
1da177e4
LT		 1300/**
1301 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1302 * @ioasc: IOASC
1303 *
1304 * This function will return the index of into the ipr_error_table
1305 * for the specified IOASC. If the IOASC is not in the table,
1306 * 0 will be returned, which points to the entry used for unknown errors.
1307 *
1308 * Return value:
1309 * index into the ipr_error_table
1310 **/
1311static u32 ipr_get_error(u32 ioasc)
1312{
1313 int i;
1314
1315 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1316 if (ipr_error_table[i].ioasc == ioasc)
1317 return i;
1318
1319 return 0;
1320}
1321
1322/**
1323 * ipr_handle_log_data - Log an adapter error.
1324 * @ioa_cfg: ioa config struct
1325 * @hostrcb: hostrcb struct
1326 *
1327 * This function logs an adapter error to the system.
1328 *
1329 * Return value:
1330 * none
1331 **/
1332static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1333 struct ipr_hostrcb *hostrcb)
1334{
1335 u32 ioasc;
1336 int error_index;
1337
1338 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1339 return;
1340
1341 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1342 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1343
1344 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1345
1346 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1347 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1348 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1349 scsi_report_bus_reset(ioa_cfg->host,
1350 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1351 }
1352
1353 error_index = ipr_get_error(ioasc);
1354
1355 if (!ipr_error_table[error_index].log_hcam)
1356 return;
1357
1358 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1359 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1360 "%s\n", ipr_error_table[error_index].error);
1361 } else {
1362 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1363 ipr_error_table[error_index].error);
1364 }
1365
1366 /* Set indication we have logged an error */
1367 ioa_cfg->errors_logged++;
1368
1369 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1370 return;
cf852037
BK		 1371 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1372 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1373
1374 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1375 case IPR_HOST_RCB_OVERLAY_ID_2:
1376 ipr_log_cache_error(ioa_cfg, hostrcb);
1377 break;
1378 case IPR_HOST_RCB_OVERLAY_ID_3:
1379 ipr_log_config_error(ioa_cfg, hostrcb);
1380 break;
1381 case IPR_HOST_RCB_OVERLAY_ID_4:
1382 case IPR_HOST_RCB_OVERLAY_ID_6:
1383 ipr_log_array_error(ioa_cfg, hostrcb);
1384 break;
b0df54bb
BK		 1385 case IPR_HOST_RCB_OVERLAY_ID_7:
1386 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1387 break;
ee0f05b8
BK		 1388 case IPR_HOST_RCB_OVERLAY_ID_12:
1389 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1390 break;
1391 case IPR_HOST_RCB_OVERLAY_ID_13:
1392 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1393 break;
1394 case IPR_HOST_RCB_OVERLAY_ID_14:
1395 case IPR_HOST_RCB_OVERLAY_ID_16:
1396 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1397 break;
1398 case IPR_HOST_RCB_OVERLAY_ID_17:
1399 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1400 break;
cf852037 1401 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1402 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1403 default:
a9cfca96 1404 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1405 break;
1406 }
1407}
1408
1409/**
1410 * ipr_process_error - Op done function for an adapter error log.
1411 * @ipr_cmd: ipr command struct
1412 *
1413 * This function is the op done function for an error log host
1414 * controlled async from the adapter. It will log the error and
1415 * send the HCAM back to the adapter.
1416 *
1417 * Return value:
1418 * none
1419 **/
1420static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1421{
1422 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1423 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1424 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1425
1426 list_del(&hostrcb->queue);
1427 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1428
1429 if (!ioasc) {
1430 ipr_handle_log_data(ioa_cfg, hostrcb);
1431 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1432 dev_err(&ioa_cfg->pdev->dev,
1433 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1434 }
1435
1436 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1437}
1438
1439/**
1440 * ipr_timeout - An internally generated op has timed out.
1441 * @ipr_cmd: ipr command struct
1442 *
1443 * This function blocks host requests and initiates an
1444 * adapter reset.
1445 *
1446 * Return value:
1447 * none
1448 **/
1449static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1450{
1451 unsigned long lock_flags = 0;
1452 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1453
1454 ENTER;
1455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1456
1457 ioa_cfg->errors_logged++;
1458 dev_err(&ioa_cfg->pdev->dev,
1459 "Adapter being reset due to command timeout.\n");
1460
1461 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1462 ioa_cfg->sdt_state = GET_DUMP;
1463
1464 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1465 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1466
1467 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1468 LEAVE;
1469}
1470
1471/**
1472 * ipr_oper_timeout - Adapter timed out transitioning to operational
1473 * @ipr_cmd: ipr command struct
1474 *
1475 * This function blocks host requests and initiates an
1476 * adapter reset.
1477 *
1478 * Return value:
1479 * none
1480 **/
1481static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1482{
1483 unsigned long lock_flags = 0;
1484 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1485
1486 ENTER;
1487 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1488
1489 ioa_cfg->errors_logged++;
1490 dev_err(&ioa_cfg->pdev->dev,
1491 "Adapter timed out transitioning to operational.\n");
1492
1493 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1494 ioa_cfg->sdt_state = GET_DUMP;
1495
1496 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1497 if (ipr_fastfail)
1498 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1499 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1500 }
1501
1502 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1503 LEAVE;
1504}
1505
1506/**
1507 * ipr_reset_reload - Reset/Reload the IOA
1508 * @ioa_cfg: ioa config struct
1509 * @shutdown_type: shutdown type
1510 *
1511 * This function resets the adapter and re-initializes it.
1512 * This function assumes that all new host commands have been stopped.
1513 * Return value:
1514 * SUCCESS / FAILED
1515 **/
1516static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1517 enum ipr_shutdown_type shutdown_type)
1518{
1519 if (!ioa_cfg->in_reset_reload)
1520 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1521
1522 spin_unlock_irq(ioa_cfg->host->host_lock);
1523 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1524 spin_lock_irq(ioa_cfg->host->host_lock);
1525
1526 /* If we got hit with a host reset while we were already resetting
1527 the adapter for some reason, and the reset failed. */
1528 if (ioa_cfg->ioa_is_dead) {
1529 ipr_trace;
1530 return FAILED;
1531 }
1532
1533 return SUCCESS;
1534}
1535
1536/**
1537 * ipr_find_ses_entry - Find matching SES in SES table
1538 * @res: resource entry struct of SES
1539 *
1540 * Return value:
1541 * pointer to SES table entry / NULL on failure
1542 **/
1543static const struct ipr_ses_table_entry *
1544ipr_find_ses_entry(struct ipr_resource_entry *res)
1545{
1546 int i, j, matches;
1547 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1548
1549 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1550 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1551 if (ste->compare_product_id_byte[j] == 'X') {
1552 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1553 matches++;
1554 else
1555 break;
1556 } else
1557 matches++;
1558 }
1559
1560 if (matches == IPR_PROD_ID_LEN)
1561 return ste;
1562 }
1563
1564 return NULL;
1565}
1566
1567/**
1568 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1569 * @ioa_cfg: ioa config struct
1570 * @bus: SCSI bus
1571 * @bus_width: bus width
1572 *
1573 * Return value:
1574 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1575 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1576 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1577 * max 160MHz = max 320MB/sec).
1578 **/
1579static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1580{
1581 struct ipr_resource_entry *res;
1582 const struct ipr_ses_table_entry *ste;
1583 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1584
1585 /* Loop through each config table entry in the config table buffer */
1586 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1587 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1588 continue;
1589
1590 if (bus != res->cfgte.res_addr.bus)
1591 continue;
1592
1593 if (!(ste = ipr_find_ses_entry(res)))
1594 continue;
1595
1596 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1597 }
1598
1599 return max_xfer_rate;
1600}
1601
1602/**
1603 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1604 * @ioa_cfg: ioa config struct
1605 * @max_delay: max delay in micro-seconds to wait
1606 *
1607 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1608 *
1609 * Return value:
1610 * 0 on success / other on failure
1611 **/
1612static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1613{
1614 volatile u32 pcii_reg;
1615 int delay = 1;
1616
1617 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1618 while (delay < max_delay) {
1619 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1620
1621 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1622 return 0;
1623
1624 /* udelay cannot be used if delay is more than a few milliseconds */
1625 if ((delay / 1000) > MAX_UDELAY_MS)
1626 mdelay(delay / 1000);
1627 else
1628 udelay(delay);
1629
1630 delay += delay;
1631 }
1632 return -EIO;
1633}
1634
1635/**
1636 * ipr_get_ldump_data_section - Dump IOA memory
1637 * @ioa_cfg: ioa config struct
1638 * @start_addr: adapter address to dump
1639 * @dest: destination kernel buffer
1640 * @length_in_words: length to dump in 4 byte words
1641 *
1642 * Return value:
1643 * 0 on success / -EIO on failure
1644 **/
1645static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1646 u32 start_addr,
1647 __be32 *dest, u32 length_in_words)
1648{
1649 volatile u32 temp_pcii_reg;
1650 int i, delay = 0;
1651
1652 /* Write IOA interrupt reg starting LDUMP state */
1653 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1654 ioa_cfg->regs.set_uproc_interrupt_reg);
1655
1656 /* Wait for IO debug acknowledge */
1657 if (ipr_wait_iodbg_ack(ioa_cfg,
1658 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1659 dev_err(&ioa_cfg->pdev->dev,
1660 "IOA dump long data transfer timeout\n");
1661 return -EIO;
1662 }
1663
1664 /* Signal LDUMP interlocked - clear IO debug ack */
1665 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1666 ioa_cfg->regs.clr_interrupt_reg);
1667
1668 /* Write Mailbox with starting address */
1669 writel(start_addr, ioa_cfg->ioa_mailbox);
1670
1671 /* Signal address valid - clear IOA Reset alert */
1672 writel(IPR_UPROCI_RESET_ALERT,
1673 ioa_cfg->regs.clr_uproc_interrupt_reg);
1674
1675 for (i = 0; i < length_in_words; i++) {
1676 /* Wait for IO debug acknowledge */
1677 if (ipr_wait_iodbg_ack(ioa_cfg,
1678 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1679 dev_err(&ioa_cfg->pdev->dev,
1680 "IOA dump short data transfer timeout\n");
1681 return -EIO;
1682 }
1683
1684 /* Read data from mailbox and increment destination pointer */
1685 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1686 dest++;
1687
1688 /* For all but the last word of data, signal data received */
1689 if (i < (length_in_words - 1)) {
1690 /* Signal dump data received - Clear IO debug Ack */
1691 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1692 ioa_cfg->regs.clr_interrupt_reg);
1693 }
1694 }
1695
1696 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1697 writel(IPR_UPROCI_RESET_ALERT,
1698 ioa_cfg->regs.set_uproc_interrupt_reg);
1699
1700 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1701 ioa_cfg->regs.clr_uproc_interrupt_reg);
1702
1703 /* Signal dump data received - Clear IO debug Ack */
1704 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1705 ioa_cfg->regs.clr_interrupt_reg);
1706
1707 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1708 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1709 temp_pcii_reg =
1710 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1711
1712 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1713 return 0;
1714
1715 udelay(10);
1716 delay += 10;
1717 }
1718
1719 return 0;
1720}
1721
1722#ifdef CONFIG_SCSI_IPR_DUMP
1723/**
1724 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1725 * @ioa_cfg: ioa config struct
1726 * @pci_address: adapter address
1727 * @length: length of data to copy
1728 *
1729 * Copy data from PCI adapter to kernel buffer.
1730 * Note: length MUST be a 4 byte multiple
1731 * Return value:
1732 * 0 on success / other on failure
1733 **/
1734static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1735 unsigned long pci_address, u32 length)
1736{
1737 int bytes_copied = 0;
1738 int cur_len, rc, rem_len, rem_page_len;
1739 __be32 *page;
1740 unsigned long lock_flags = 0;
1741 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1742
1743 while (bytes_copied < length &&
1744 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1745 if (ioa_dump->page_offset >= PAGE_SIZE ||
1746 ioa_dump->page_offset == 0) {
1747 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1748
1749 if (!page) {
1750 ipr_trace;
1751 return bytes_copied;
1752 }
1753
1754 ioa_dump->page_offset = 0;
1755 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1756 ioa_dump->next_page_index++;
1757 } else
1758 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1759
1760 rem_len = length - bytes_copied;
1761 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1762 cur_len = min(rem_len, rem_page_len);
1763
1764 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1765 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1766 rc = -EIO;
1767 } else {
1768 rc = ipr_get_ldump_data_section(ioa_cfg,
1769 pci_address + bytes_copied,
1770 &page[ioa_dump->page_offset / 4],
1771 (cur_len / sizeof(u32)));
1772 }
1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774
1775 if (!rc) {
1776 ioa_dump->page_offset += cur_len;
1777 bytes_copied += cur_len;
1778 } else {
1779 ipr_trace;
1780 break;
1781 }
1782 schedule();
1783 }
1784
1785 return bytes_copied;
1786}
1787
1788/**
1789 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1790 * @hdr: dump entry header struct
1791 *
1792 * Return value:
1793 * nothing
1794 **/
1795static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1796{
1797 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1798 hdr->num_elems = 1;
1799 hdr->offset = sizeof(*hdr);
1800 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1801}
1802
1803/**
1804 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1805 * @ioa_cfg: ioa config struct
1806 * @driver_dump: driver dump struct
1807 *
1808 * Return value:
1809 * nothing
1810 **/
1811static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1812 struct ipr_driver_dump *driver_dump)
1813{
1814 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1815
1816 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1817 driver_dump->ioa_type_entry.hdr.len =
1818 sizeof(struct ipr_dump_ioa_type_entry) -
1819 sizeof(struct ipr_dump_entry_header);
1820 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1821 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1822 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1823 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1824 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1825 ucode_vpd->minor_release[1];
1826 driver_dump->hdr.num_entries++;
1827}
1828
1829/**
1830 * ipr_dump_version_data - Fill in the driver version in the dump.
1831 * @ioa_cfg: ioa config struct
1832 * @driver_dump: driver dump struct
1833 *
1834 * Return value:
1835 * nothing
1836 **/
1837static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1838 struct ipr_driver_dump *driver_dump)
1839{
1840 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1841 driver_dump->version_entry.hdr.len =
1842 sizeof(struct ipr_dump_version_entry) -
1843 sizeof(struct ipr_dump_entry_header);
1844 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1845 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1846 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1847 driver_dump->hdr.num_entries++;
1848}
1849
1850/**
1851 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1852 * @ioa_cfg: ioa config struct
1853 * @driver_dump: driver dump struct
1854 *
1855 * Return value:
1856 * nothing
1857 **/
1858static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1859 struct ipr_driver_dump *driver_dump)
1860{
1861 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1862 driver_dump->trace_entry.hdr.len =
1863 sizeof(struct ipr_dump_trace_entry) -
1864 sizeof(struct ipr_dump_entry_header);
1865 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1866 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1867 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1868 driver_dump->hdr.num_entries++;
1869}
1870
1871/**
1872 * ipr_dump_location_data - Fill in the IOA location in the dump.
1873 * @ioa_cfg: ioa config struct
1874 * @driver_dump: driver dump struct
1875 *
1876 * Return value:
1877 * nothing
1878 **/
1879static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1880 struct ipr_driver_dump *driver_dump)
1881{
1882 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1883 driver_dump->location_entry.hdr.len =
1884 sizeof(struct ipr_dump_location_entry) -
1885 sizeof(struct ipr_dump_entry_header);
1886 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1887 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1888 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1889 driver_dump->hdr.num_entries++;
1890}
1891
1892/**
1893 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1894 * @ioa_cfg: ioa config struct
1895 * @dump: dump struct
1896 *
1897 * Return value:
1898 * nothing
1899 **/
1900static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1901{
1902 unsigned long start_addr, sdt_word;
1903 unsigned long lock_flags = 0;
1904 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1905 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1906 u32 num_entries, start_off, end_off;
1907 u32 bytes_to_copy, bytes_copied, rc;
1908 struct ipr_sdt *sdt;
1909 int i;
1910
1911 ENTER;
1912
1913 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1914
1915 if (ioa_cfg->sdt_state != GET_DUMP) {
1916 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1917 return;
1918 }
1919
1920 start_addr = readl(ioa_cfg->ioa_mailbox);
1921
1922 if (!ipr_sdt_is_fmt2(start_addr)) {
1923 dev_err(&ioa_cfg->pdev->dev,
1924 "Invalid dump table format: %lx\n", start_addr);
1925 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1926 return;
1927 }
1928
1929 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1930
1931 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1932
1933 /* Initialize the overall dump header */
1934 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1935 driver_dump->hdr.num_entries = 1;
1936 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1937 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1938 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1939 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1940
1941 ipr_dump_version_data(ioa_cfg, driver_dump);
1942 ipr_dump_location_data(ioa_cfg, driver_dump);
1943 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1944 ipr_dump_trace_data(ioa_cfg, driver_dump);
1945
1946 /* Update dump_header */
1947 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1948
1949 /* IOA Dump entry */
1950 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1951 ioa_dump->format = IPR_SDT_FMT2;
1952 ioa_dump->hdr.len = 0;
1953 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1954 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1955
1956 /* First entries in sdt are actually a list of dump addresses and
1957 lengths to gather the real dump data. sdt represents the pointer
1958 to the ioa generated dump table. Dump data will be extracted based
1959 on entries in this table */
1960 sdt = &ioa_dump->sdt;
1961
1962 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1963 sizeof(struct ipr_sdt) / sizeof(__be32));
1964
1965 /* Smart Dump table is ready to use and the first entry is valid */
1966 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1967 dev_err(&ioa_cfg->pdev->dev,
1968 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1969 rc, be32_to_cpu(sdt->hdr.state));
1970 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1971 ioa_cfg->sdt_state = DUMP_OBTAINED;
1972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1973 return;
1974 }
1975
1976 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1977
1978 if (num_entries > IPR_NUM_SDT_ENTRIES)
1979 num_entries = IPR_NUM_SDT_ENTRIES;
1980
1981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1982
1983 for (i = 0; i < num_entries; i++) {
1984 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1985 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1986 break;
1987 }
1988
1989 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1990 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1991 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1992 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1993
1994 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1995 bytes_to_copy = end_off - start_off;
1996 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1997 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1998 continue;
1999 }
2000
2001 /* Copy data from adapter to driver buffers */
2002 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2003 bytes_to_copy);
2004
2005 ioa_dump->hdr.len += bytes_copied;
2006
2007 if (bytes_copied != bytes_to_copy) {
2008 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2009 break;
2010 }
2011 }
2012 }
2013 }
2014
2015 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2016
2017 /* Update dump_header */
2018 driver_dump->hdr.len += ioa_dump->hdr.len;
2019 wmb();
2020 ioa_cfg->sdt_state = DUMP_OBTAINED;
2021 LEAVE;
2022}
2023
2024#else
2025#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2026#endif
2027
2028/**
2029 * ipr_release_dump - Free adapter dump memory
2030 * @kref: kref struct
2031 *
2032 * Return value:
2033 * nothing
2034 **/
2035static void ipr_release_dump(struct kref *kref)
2036{
2037 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2038 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2039 unsigned long lock_flags = 0;
2040 int i;
2041
2042 ENTER;
2043 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2044 ioa_cfg->dump = NULL;
2045 ioa_cfg->sdt_state = INACTIVE;
2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2047
2048 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2049 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2050
2051 kfree(dump);
2052 LEAVE;
2053}
2054
2055/**
2056 * ipr_worker_thread - Worker thread
2057 * @data: ioa config struct
2058 *
2059 * Called at task level from a work thread. This function takes care
2060 * of adding and removing device from the mid-layer as configuration
2061 * changes are detected by the adapter.
2062 *
2063 * Return value:
2064 * nothing
2065 **/
2066static void ipr_worker_thread(void *data)
2067{
2068 unsigned long lock_flags;
2069 struct ipr_resource_entry *res;
2070 struct scsi_device *sdev;
2071 struct ipr_dump *dump;
2072 struct ipr_ioa_cfg *ioa_cfg = data;
2073 u8 bus, target, lun;
2074 int did_work;
2075
2076 ENTER;
2077 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2078
2079 if (ioa_cfg->sdt_state == GET_DUMP) {
2080 dump = ioa_cfg->dump;
2081 if (!dump) {
2082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2083 return;
2084 }
2085 kref_get(&dump->kref);
2086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2087 ipr_get_ioa_dump(ioa_cfg, dump);
2088 kref_put(&dump->kref, ipr_release_dump);
2089
2090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2091 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2092 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2094 return;
2095 }
2096
2097restart:
2098 do {
2099 did_work = 0;
2100 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2102 return;
2103 }
2104
2105 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2106 if (res->del_from_ml && res->sdev) {
2107 did_work = 1;
2108 sdev = res->sdev;
2109 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2110 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2111 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2112 scsi_remove_device(sdev);
2113 scsi_device_put(sdev);
2114 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2115 }
2116 break;
2117 }
2118 }
2119 } while(did_work);
2120
2121 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2122 if (res->add_to_ml) {
2123 bus = res->cfgte.res_addr.bus;
2124 target = res->cfgte.res_addr.target;
2125 lun = res->cfgte.res_addr.lun;
1121b794 2126 res->add_to_ml = 0;
1da177e4
LT		 2127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2128 scsi_add_device(ioa_cfg->host, bus, target, lun);
2129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2130 goto restart;
2131 }
2132 }
2133
2134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
312c004d 2135 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2136 LEAVE;
2137}
2138
2139#ifdef CONFIG_SCSI_IPR_TRACE
2140/**
2141 * ipr_read_trace - Dump the adapter trace
2142 * @kobj: kobject struct
2143 * @buf: buffer
2144 * @off: offset
2145 * @count: buffer size
2146 *
2147 * Return value:
2148 * number of bytes printed to buffer
2149 **/
2150static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2151 loff_t off, size_t count)
2152{
2153 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2154 struct Scsi_Host *shost = class_to_shost(cdev);
2155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2156 unsigned long lock_flags = 0;
2157 int size = IPR_TRACE_SIZE;
2158 char *src = (char *)ioa_cfg->trace;
2159
2160 if (off > size)
2161 return 0;
2162 if (off + count > size) {
2163 size -= off;
2164 count = size;
2165 }
2166
2167 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2168 memcpy(buf, &src[off], count);
2169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2170 return count;
2171}
2172
2173static struct bin_attribute ipr_trace_attr = {
2174 .attr = {
2175 .name = "trace",
2176 .mode = S_IRUGO,
2177 },
2178 .size = 0,
2179 .read = ipr_read_trace,
2180};
2181#endif
2182
62275040
BK		 2183static const struct {
2184 enum ipr_cache_state state;
2185 char *name;
2186} cache_state [] = {
2187 { CACHE_NONE, "none" },
2188 { CACHE_DISABLED, "disabled" },
2189 { CACHE_ENABLED, "enabled" }
2190};
2191
2192/**
2193 * ipr_show_write_caching - Show the write caching attribute
2194 * @class_dev: class device struct
2195 * @buf: buffer
2196 *
2197 * Return value:
2198 * number of bytes printed to buffer
2199 **/
2200static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2201{
2202 struct Scsi_Host *shost = class_to_shost(class_dev);
2203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2204 unsigned long lock_flags = 0;
2205 int i, len = 0;
2206
2207 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2208 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2209 if (cache_state[i].state == ioa_cfg->cache_state) {
2210 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2211 break;
2212 }
2213 }
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return len;
2216}
2217
2218
2219/**
2220 * ipr_store_write_caching - Enable/disable adapter write cache
2221 * @class_dev: class_device struct
2222 * @buf: buffer
2223 * @count: buffer size
2224 *
2225 * This function will enable/disable adapter write cache.
2226 *
2227 * Return value:
2228 * count on success / other on failure
2229 **/
2230static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2231 const char *buf, size_t count)
2232{
2233 struct Scsi_Host *shost = class_to_shost(class_dev);
2234 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2235 unsigned long lock_flags = 0;
2236 enum ipr_cache_state new_state = CACHE_INVALID;
2237 int i;
2238
2239 if (!capable(CAP_SYS_ADMIN))
2240 return -EACCES;
2241 if (ioa_cfg->cache_state == CACHE_NONE)
2242 return -EINVAL;
2243
2244 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2245 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2246 new_state = cache_state[i].state;
2247 break;
2248 }
2249 }
2250
2251 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2252 return -EINVAL;
2253
2254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2255 if (ioa_cfg->cache_state == new_state) {
2256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2257 return count;
2258 }
2259
2260 ioa_cfg->cache_state = new_state;
2261 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2262 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2263 if (!ioa_cfg->in_reset_reload)
2264 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2266 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2267
2268 return count;
2269}
2270
2271static struct class_device_attribute ipr_ioa_cache_attr = {
2272 .attr = {
2273 .name = "write_cache",
2274 .mode = S_IRUGO | S_IWUSR,
2275 },
2276 .show = ipr_show_write_caching,
2277 .store = ipr_store_write_caching
2278};
2279
1da177e4
LT		 2280/**
2281 * ipr_show_fw_version - Show the firmware version
2282 * @class_dev: class device struct
2283 * @buf: buffer
2284 *
2285 * Return value:
2286 * number of bytes printed to buffer
2287 **/
2288static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2289{
2290 struct Scsi_Host *shost = class_to_shost(class_dev);
2291 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2292 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2293 unsigned long lock_flags = 0;
2294 int len;
2295
2296 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2297 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2298 ucode_vpd->major_release, ucode_vpd->card_type,
2299 ucode_vpd->minor_release[0],
2300 ucode_vpd->minor_release[1]);
2301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2302 return len;
2303}
2304
2305static struct class_device_attribute ipr_fw_version_attr = {
2306 .attr = {
2307 .name = "fw_version",
2308 .mode = S_IRUGO,
2309 },
2310 .show = ipr_show_fw_version,
2311};
2312
2313/**
2314 * ipr_show_log_level - Show the adapter's error logging level
2315 * @class_dev: class device struct
2316 * @buf: buffer
2317 *
2318 * Return value:
2319 * number of bytes printed to buffer
2320 **/
2321static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2322{
2323 struct Scsi_Host *shost = class_to_shost(class_dev);
2324 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2325 unsigned long lock_flags = 0;
2326 int len;
2327
2328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2329 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2331 return len;
2332}
2333
2334/**
2335 * ipr_store_log_level - Change the adapter's error logging level
2336 * @class_dev: class device struct
2337 * @buf: buffer
2338 *
2339 * Return value:
2340 * number of bytes printed to buffer
2341 **/
2342static ssize_t ipr_store_log_level(struct class_device *class_dev,
2343 const char *buf, size_t count)
2344{
2345 struct Scsi_Host *shost = class_to_shost(class_dev);
2346 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2347 unsigned long lock_flags = 0;
2348
2349 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2350 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2352 return strlen(buf);
2353}
2354
2355static struct class_device_attribute ipr_log_level_attr = {
2356 .attr = {
2357 .name = "log_level",
2358 .mode = S_IRUGO | S_IWUSR,
2359 },
2360 .show = ipr_show_log_level,
2361 .store = ipr_store_log_level
2362};
2363
2364/**
2365 * ipr_store_diagnostics - IOA Diagnostics interface
2366 * @class_dev: class_device struct
2367 * @buf: buffer
2368 * @count: buffer size
2369 *
2370 * This function will reset the adapter and wait a reasonable
2371 * amount of time for any errors that the adapter might log.
2372 *
2373 * Return value:
2374 * count on success / other on failure
2375 **/
2376static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2377 const char *buf, size_t count)
2378{
2379 struct Scsi_Host *shost = class_to_shost(class_dev);
2380 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2381 unsigned long lock_flags = 0;
2382 int rc = count;
2383
2384 if (!capable(CAP_SYS_ADMIN))
2385 return -EACCES;
2386
2387 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2388 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2389 ioa_cfg->errors_logged = 0;
2390 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2391
2392 if (ioa_cfg->in_reset_reload) {
2393 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2394 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2395
2396 /* Wait for a second for any errors to be logged */
2397 msleep(1000);
2398 } else {
2399 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2400 return -EIO;
2401 }
2402
2403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2404 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2405 rc = -EIO;
2406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2407
2408 return rc;
2409}
2410
2411static struct class_device_attribute ipr_diagnostics_attr = {
2412 .attr = {
2413 .name = "run_diagnostics",
2414 .mode = S_IWUSR,
2415 },
2416 .store = ipr_store_diagnostics
2417};
2418
f37eb54b
BK		 2419/**
2420 * ipr_show_adapter_state - Show the adapter's state
2421 * @class_dev: class device struct
2422 * @buf: buffer
2423 *
2424 * Return value:
2425 * number of bytes printed to buffer
2426 **/
2427static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2428{
2429 struct Scsi_Host *shost = class_to_shost(class_dev);
2430 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2431 unsigned long lock_flags = 0;
2432 int len;
2433
2434 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2435 if (ioa_cfg->ioa_is_dead)
2436 len = snprintf(buf, PAGE_SIZE, "offline\n");
2437 else
2438 len = snprintf(buf, PAGE_SIZE, "online\n");
2439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2440 return len;
2441}
2442
2443/**
2444 * ipr_store_adapter_state - Change adapter state
2445 * @class_dev: class_device struct
2446 * @buf: buffer
2447 * @count: buffer size
2448 *
2449 * This function will change the adapter's state.
2450 *
2451 * Return value:
2452 * count on success / other on failure
2453 **/
2454static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2455 const char *buf, size_t count)
2456{
2457 struct Scsi_Host *shost = class_to_shost(class_dev);
2458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2459 unsigned long lock_flags;
2460 int result = count;
2461
2462 if (!capable(CAP_SYS_ADMIN))
2463 return -EACCES;
2464
2465 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2466 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2467 ioa_cfg->ioa_is_dead = 0;
2468 ioa_cfg->reset_retries = 0;
2469 ioa_cfg->in_ioa_bringdown = 0;
2470 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2471 }
2472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2473 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2474
2475 return result;
2476}
2477
2478static struct class_device_attribute ipr_ioa_state_attr = {
2479 .attr = {
2480 .name = "state",
2481 .mode = S_IRUGO | S_IWUSR,
2482 },
2483 .show = ipr_show_adapter_state,
2484 .store = ipr_store_adapter_state
2485};
2486
1da177e4
LT		 2487/**
2488 * ipr_store_reset_adapter - Reset the adapter
2489 * @class_dev: class_device struct
2490 * @buf: buffer
2491 * @count: buffer size
2492 *
2493 * This function will reset the adapter.
2494 *
2495 * Return value:
2496 * count on success / other on failure
2497 **/
2498static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2499 const char *buf, size_t count)
2500{
2501 struct Scsi_Host *shost = class_to_shost(class_dev);
2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags;
2504 int result = count;
2505
2506 if (!capable(CAP_SYS_ADMIN))
2507 return -EACCES;
2508
2509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2510 if (!ioa_cfg->in_reset_reload)
2511 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2513 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2514
2515 return result;
2516}
2517
2518static struct class_device_attribute ipr_ioa_reset_attr = {
2519 .attr = {
2520 .name = "reset_host",
2521 .mode = S_IWUSR,
2522 },
2523 .store = ipr_store_reset_adapter
2524};
2525
2526/**
2527 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2528 * @buf_len: buffer length
2529 *
2530 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2531 * list to use for microcode download
2532 *
2533 * Return value:
2534 * pointer to sglist / NULL on failure
2535 **/
2536static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2537{
2538 int sg_size, order, bsize_elem, num_elem, i, j;
2539 struct ipr_sglist *sglist;
2540 struct scatterlist *scatterlist;
2541 struct page *page;
2542
2543 /* Get the minimum size per scatter/gather element */
2544 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2545
2546 /* Get the actual size per element */
2547 order = get_order(sg_size);
2548
2549 /* Determine the actual number of bytes per element */
2550 bsize_elem = PAGE_SIZE * (1 << order);
2551
2552 /* Determine the actual number of sg entries needed */
2553 if (buf_len % bsize_elem)
2554 num_elem = (buf_len / bsize_elem) + 1;
2555 else
2556 num_elem = buf_len / bsize_elem;
2557
2558 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2559 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2560 (sizeof(struct scatterlist) * (num_elem - 1)),
2561 GFP_KERNEL);
2562
2563 if (sglist == NULL) {
2564 ipr_trace;
2565 return NULL;
2566 }
2567
1da177e4
LT		 2568 scatterlist = sglist->scatterlist;
2569
2570 sglist->order = order;
2571 sglist->num_sg = num_elem;
2572
2573 /* Allocate a bunch of sg elements */
2574 for (i = 0; i < num_elem; i++) {
2575 page = alloc_pages(GFP_KERNEL, order);
2576 if (!page) {
2577 ipr_trace;
2578
2579 /* Free up what we already allocated */
2580 for (j = i - 1; j >= 0; j--)
2581 __free_pages(scatterlist[j].page, order);
2582 kfree(sglist);
2583 return NULL;
2584 }
2585
2586 scatterlist[i].page = page;
2587 }
2588
2589 return sglist;
2590}
2591
2592/**
2593 * ipr_free_ucode_buffer - Frees a microcode download buffer
2594 * @p_dnld: scatter/gather list pointer
2595 *
2596 * Free a DMA'able ucode download buffer previously allocated with
2597 * ipr_alloc_ucode_buffer
2598 *
2599 * Return value:
2600 * nothing
2601 **/
2602static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2603{
2604 int i;
2605
2606 for (i = 0; i < sglist->num_sg; i++)
2607 __free_pages(sglist->scatterlist[i].page, sglist->order);
2608
2609 kfree(sglist);
2610}
2611
2612/**
2613 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2614 * @sglist: scatter/gather list pointer
2615 * @buffer: buffer pointer
2616 * @len: buffer length
2617 *
2618 * Copy a microcode image from a user buffer into a buffer allocated by
2619 * ipr_alloc_ucode_buffer
2620 *
2621 * Return value:
2622 * 0 on success / other on failure
2623 **/
2624static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2625 u8 *buffer, u32 len)
2626{
2627 int bsize_elem, i, result = 0;
2628 struct scatterlist *scatterlist;
2629 void *kaddr;
2630
2631 /* Determine the actual number of bytes per element */
2632 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2633
2634 scatterlist = sglist->scatterlist;
2635
2636 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2637 kaddr = kmap(scatterlist[i].page);
2638 memcpy(kaddr, buffer, bsize_elem);
2639 kunmap(scatterlist[i].page);
2640
2641 scatterlist[i].length = bsize_elem;
2642
2643 if (result != 0) {
2644 ipr_trace;
2645 return result;
2646 }
2647 }
2648
2649 if (len % bsize_elem) {
2650 kaddr = kmap(scatterlist[i].page);
2651 memcpy(kaddr, buffer, len % bsize_elem);
2652 kunmap(scatterlist[i].page);
2653
2654 scatterlist[i].length = len % bsize_elem;
2655 }
2656
2657 sglist->buffer_len = len;
2658 return result;
2659}
2660
2661/**
12baa420 2662 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2663 * @ipr_cmd: ipr command struct
2664 * @sglist: scatter/gather list
1da177e4 2665 *
12baa420 2666 * Builds a microcode download IOA data list (IOADL).
1da177e4 2667 *
1da177e4 2668 **/
12baa420
BK		 2669static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2670 struct ipr_sglist *sglist)
1da177e4 2671{
1da177e4
LT		 2672 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2673 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2674 struct scatterlist *scatterlist = sglist->scatterlist;
2675 int i;
2676
12baa420 2677 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2678 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2679 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2680 ioarcb->write_ioadl_len =
2681 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2682
2683 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2684 ioadl[i].flags_and_data_len =
2685 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2686 ioadl[i].address =
2687 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2688 }
2689
12baa420
BK		 2690 ioadl[i-1].flags_and_data_len |=
2691 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2692}
2693
2694/**
2695 * ipr_update_ioa_ucode - Update IOA's microcode
2696 * @ioa_cfg: ioa config struct
2697 * @sglist: scatter/gather list
2698 *
2699 * Initiate an adapter reset to update the IOA's microcode
2700 *
2701 * Return value:
2702 * 0 on success / -EIO on failure
2703 **/
2704static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2705 struct ipr_sglist *sglist)
2706{
2707 unsigned long lock_flags;
2708
2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2710
2711 if (ioa_cfg->ucode_sglist) {
2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713 dev_err(&ioa_cfg->pdev->dev,
2714 "Microcode download already in progress\n");
2715 return -EIO;
1da177e4 2716 }
12baa420
BK		 2717
2718 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2719 sglist->num_sg, DMA_TO_DEVICE);
2720
2721 if (!sglist->num_dma_sg) {
2722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2723 dev_err(&ioa_cfg->pdev->dev,
2724 "Failed to map microcode download buffer!\n");
1da177e4
LT		 2725 return -EIO;
2726 }
2727
12baa420
BK		 2728 ioa_cfg->ucode_sglist = sglist;
2729 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2730 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2731 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2732
2733 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2734 ioa_cfg->ucode_sglist = NULL;
2735 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 2736 return 0;
2737}
2738
2739/**
2740 * ipr_store_update_fw - Update the firmware on the adapter
2741 * @class_dev: class_device struct
2742 * @buf: buffer
2743 * @count: buffer size
2744 *
2745 * This function will update the firmware on the adapter.
2746 *
2747 * Return value:
2748 * count on success / other on failure
2749 **/
2750static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2751 const char *buf, size_t count)
2752{
2753 struct Scsi_Host *shost = class_to_shost(class_dev);
2754 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2755 struct ipr_ucode_image_header *image_hdr;
2756 const struct firmware *fw_entry;
2757 struct ipr_sglist *sglist;
1da177e4
LT		 2758 char fname[100];
2759 char *src;
2760 int len, result, dnld_size;
2761
2762 if (!capable(CAP_SYS_ADMIN))
2763 return -EACCES;
2764
2765 len = snprintf(fname, 99, "%s", buf);
2766 fname[len-1] = '\0';
2767
2768 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2769 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2770 return -EIO;
2771 }
2772
2773 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2774
2775 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2776 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2777 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2778 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2779 release_firmware(fw_entry);
2780 return -EINVAL;
2781 }
2782
2783 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2784 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2785 sglist = ipr_alloc_ucode_buffer(dnld_size);
2786
2787 if (!sglist) {
2788 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2789 release_firmware(fw_entry);
2790 return -ENOMEM;
2791 }
2792
2793 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2794
2795 if (result) {
2796 dev_err(&ioa_cfg->pdev->dev,
2797 "Microcode buffer copy to DMA buffer failed\n");
12baa420 2798 goto out;
1da177e4
LT		 2799 }
2800
12baa420 2801 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 2802
12baa420
BK		 2803 if (!result)
2804 result = count;
2805out:
1da177e4
LT		 2806 ipr_free_ucode_buffer(sglist);
2807 release_firmware(fw_entry);
12baa420 2808 return result;
1da177e4
LT		 2809}
2810
2811static struct class_device_attribute ipr_update_fw_attr = {
2812 .attr = {
2813 .name = "update_fw",
2814 .mode = S_IWUSR,
2815 },
2816 .store = ipr_store_update_fw
2817};
2818
2819static struct class_device_attribute *ipr_ioa_attrs[] = {
2820 &ipr_fw_version_attr,
2821 &ipr_log_level_attr,
2822 &ipr_diagnostics_attr,
f37eb54b 2823 &ipr_ioa_state_attr,
1da177e4
LT		 2824 &ipr_ioa_reset_attr,
2825 &ipr_update_fw_attr,
62275040 2826 &ipr_ioa_cache_attr,
1da177e4
LT		 2827 NULL,
2828};
2829
2830#ifdef CONFIG_SCSI_IPR_DUMP
2831/**
2832 * ipr_read_dump - Dump the adapter
2833 * @kobj: kobject struct
2834 * @buf: buffer
2835 * @off: offset
2836 * @count: buffer size
2837 *
2838 * Return value:
2839 * number of bytes printed to buffer
2840 **/
2841static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2842 loff_t off, size_t count)
2843{
2844 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2845 struct Scsi_Host *shost = class_to_shost(cdev);
2846 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2847 struct ipr_dump *dump;
2848 unsigned long lock_flags = 0;
2849 char *src;
2850 int len;
2851 size_t rc = count;
2852
2853 if (!capable(CAP_SYS_ADMIN))
2854 return -EACCES;
2855
2856 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2857 dump = ioa_cfg->dump;
2858
2859 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2860 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2861 return 0;
2862 }
2863 kref_get(&dump->kref);
2864 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2865
2866 if (off > dump->driver_dump.hdr.len) {
2867 kref_put(&dump->kref, ipr_release_dump);
2868 return 0;
2869 }
2870
2871 if (off + count > dump->driver_dump.hdr.len) {
2872 count = dump->driver_dump.hdr.len - off;
2873 rc = count;
2874 }
2875
2876 if (count && off < sizeof(dump->driver_dump)) {
2877 if (off + count > sizeof(dump->driver_dump))
2878 len = sizeof(dump->driver_dump) - off;
2879 else
2880 len = count;
2881 src = (u8 *)&dump->driver_dump + off;
2882 memcpy(buf, src, len);
2883 buf += len;
2884 off += len;
2885 count -= len;
2886 }
2887
2888 off -= sizeof(dump->driver_dump);
2889
2890 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2891 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2892 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2893 else
2894 len = count;
2895 src = (u8 *)&dump->ioa_dump + off;
2896 memcpy(buf, src, len);
2897 buf += len;
2898 off += len;
2899 count -= len;
2900 }
2901
2902 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2903
2904 while (count) {
2905 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2906 len = PAGE_ALIGN(off) - off;
2907 else
2908 len = count;
2909 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2910 src += off & ~PAGE_MASK;
2911 memcpy(buf, src, len);
2912 buf += len;
2913 off += len;
2914 count -= len;
2915 }
2916
2917 kref_put(&dump->kref, ipr_release_dump);
2918 return rc;
2919}
2920
2921/**
2922 * ipr_alloc_dump - Prepare for adapter dump
2923 * @ioa_cfg: ioa config struct
2924 *
2925 * Return value:
2926 * 0 on success / other on failure
2927 **/
2928static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2929{
2930 struct ipr_dump *dump;
2931 unsigned long lock_flags = 0;
2932
2933 ENTER;
0bc42e35 2934 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 2935
2936 if (!dump) {
2937 ipr_err("Dump memory allocation failed\n");
2938 return -ENOMEM;
2939 }
2940
1da177e4
LT		 2941 kref_init(&dump->kref);
2942 dump->ioa_cfg = ioa_cfg;
2943
2944 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2945
2946 if (INACTIVE != ioa_cfg->sdt_state) {
2947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2948 kfree(dump);
2949 return 0;
2950 }
2951
2952 ioa_cfg->dump = dump;
2953 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2954 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2955 ioa_cfg->dump_taken = 1;
2956 schedule_work(&ioa_cfg->work_q);
2957 }
2958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2959
2960 LEAVE;
2961 return 0;
2962}
2963
2964/**
2965 * ipr_free_dump - Free adapter dump memory
2966 * @ioa_cfg: ioa config struct
2967 *
2968 * Return value:
2969 * 0 on success / other on failure
2970 **/
2971static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2972{
2973 struct ipr_dump *dump;
2974 unsigned long lock_flags = 0;
2975
2976 ENTER;
2977
2978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2979 dump = ioa_cfg->dump;
2980 if (!dump) {
2981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2982 return 0;
2983 }
2984
2985 ioa_cfg->dump = NULL;
2986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2987
2988 kref_put(&dump->kref, ipr_release_dump);
2989
2990 LEAVE;
2991 return 0;
2992}
2993
2994/**
2995 * ipr_write_dump - Setup dump state of adapter
2996 * @kobj: kobject struct
2997 * @buf: buffer
2998 * @off: offset
2999 * @count: buffer size
3000 *
3001 * Return value:
3002 * number of bytes printed to buffer
3003 **/
3004static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3005 loff_t off, size_t count)
3006{
3007 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3008 struct Scsi_Host *shost = class_to_shost(cdev);
3009 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3010 int rc;
3011
3012 if (!capable(CAP_SYS_ADMIN))
3013 return -EACCES;
3014
3015 if (buf[0] == '1')
3016 rc = ipr_alloc_dump(ioa_cfg);
3017 else if (buf[0] == '0')
3018 rc = ipr_free_dump(ioa_cfg);
3019 else
3020 return -EINVAL;
3021
3022 if (rc)
3023 return rc;
3024 else
3025 return count;
3026}
3027
3028static struct bin_attribute ipr_dump_attr = {
3029 .attr = {
3030 .name = "dump",
3031 .mode = S_IRUSR | S_IWUSR,
3032 },
3033 .size = 0,
3034 .read = ipr_read_dump,
3035 .write = ipr_write_dump
3036};
3037#else
3038static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3039#endif
3040
3041/**
3042 * ipr_change_queue_depth - Change the device's queue depth
3043 * @sdev: scsi device struct
3044 * @qdepth: depth to set
3045 *
3046 * Return value:
3047 * actual depth set
3048 **/
3049static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3050{
3051 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3052 return sdev->queue_depth;
3053}
3054
3055/**
3056 * ipr_change_queue_type - Change the device's queue type
3057 * @dsev: scsi device struct
3058 * @tag_type: type of tags to use
3059 *
3060 * Return value:
3061 * actual queue type set
3062 **/
3063static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3064{
3065 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3066 struct ipr_resource_entry *res;
3067 unsigned long lock_flags = 0;
3068
3069 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3070 res = (struct ipr_resource_entry *)sdev->hostdata;
3071
3072 if (res) {
3073 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3074 /*
3075 * We don't bother quiescing the device here since the
3076 * adapter firmware does it for us.
3077 */
3078 scsi_set_tag_type(sdev, tag_type);
3079
3080 if (tag_type)
3081 scsi_activate_tcq(sdev, sdev->queue_depth);
3082 else
3083 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3084 } else
3085 tag_type = 0;
3086 } else
3087 tag_type = 0;
3088
3089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3090 return tag_type;
3091}
3092
3093/**
3094 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3095 * @dev: device struct
3096 * @buf: buffer
3097 *
3098 * Return value:
3099 * number of bytes printed to buffer
3100 **/
10523b3b 3101static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3102{
3103 struct scsi_device *sdev = to_scsi_device(dev);
3104 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3105 struct ipr_resource_entry *res;
3106 unsigned long lock_flags = 0;
3107 ssize_t len = -ENXIO;
3108
3109 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3110 res = (struct ipr_resource_entry *)sdev->hostdata;
3111 if (res)
3112 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3113 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3114 return len;
3115}
3116
3117static struct device_attribute ipr_adapter_handle_attr = {
3118 .attr = {
3119 .name = "adapter_handle",
3120 .mode = S_IRUSR,
3121 },
3122 .show = ipr_show_adapter_handle
3123};
3124
3125static struct device_attribute *ipr_dev_attrs[] = {
3126 &ipr_adapter_handle_attr,
3127 NULL,
3128};
3129
3130/**
3131 * ipr_biosparam - Return the HSC mapping
3132 * @sdev: scsi device struct
3133 * @block_device: block device pointer
3134 * @capacity: capacity of the device
3135 * @parm: Array containing returned HSC values.
3136 *
3137 * This function generates the HSC parms that fdisk uses.
3138 * We want to make sure we return something that places partitions
3139 * on 4k boundaries for best performance with the IOA.
3140 *
3141 * Return value:
3142 * 0 on success
3143 **/
3144static int ipr_biosparam(struct scsi_device *sdev,
3145 struct block_device *block_device,
3146 sector_t capacity, int *parm)
3147{
3148 int heads, sectors;
3149 sector_t cylinders;
3150
3151 heads = 128;
3152 sectors = 32;
3153
3154 cylinders = capacity;
3155 sector_div(cylinders, (128 * 32));
3156
3157 /* return result */
3158 parm[0] = heads;
3159 parm[1] = sectors;
3160 parm[2] = cylinders;
3161
3162 return 0;
3163}
3164
3165/**
3166 * ipr_slave_destroy - Unconfigure a SCSI device
3167 * @sdev: scsi device struct
3168 *
3169 * Return value:
3170 * nothing
3171 **/
3172static void ipr_slave_destroy(struct scsi_device *sdev)
3173{
3174 struct ipr_resource_entry *res;
3175 struct ipr_ioa_cfg *ioa_cfg;
3176 unsigned long lock_flags = 0;
3177
3178 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3179
3180 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3181 res = (struct ipr_resource_entry *) sdev->hostdata;
3182 if (res) {
3183 sdev->hostdata = NULL;
3184 res->sdev = NULL;
3185 }
3186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3187}
3188
3189/**
3190 * ipr_slave_configure - Configure a SCSI device
3191 * @sdev: scsi device struct
3192 *
3193 * This function configures the specified scsi device.
3194 *
3195 * Return value:
3196 * 0 on success
3197 **/
3198static int ipr_slave_configure(struct scsi_device *sdev)
3199{
3200 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3201 struct ipr_resource_entry *res;
3202 unsigned long lock_flags = 0;
3203
3204 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3205 res = sdev->hostdata;
3206 if (res) {
3207 if (ipr_is_af_dasd_device(res))
3208 sdev->type = TYPE_RAID;
0726ce26 3209 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3210 sdev->scsi_level = 4;
0726ce26
BK		 3211 sdev->no_uld_attach = 1;
3212 }
1da177e4
LT		 3213 if (ipr_is_vset_device(res)) {
3214 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3215 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3216 }
3217 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
3218 sdev->allow_restart = 1;
3219 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3220 }
3221 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3222 return 0;
3223}
3224
3225/**
3226 * ipr_slave_alloc - Prepare for commands to a device.
3227 * @sdev: scsi device struct
3228 *
3229 * This function saves a pointer to the resource entry
3230 * in the scsi device struct if the device exists. We
3231 * can then use this pointer in ipr_queuecommand when
3232 * handling new commands.
3233 *
3234 * Return value:
692aebfc 3235 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3236 **/
3237static int ipr_slave_alloc(struct scsi_device *sdev)
3238{
3239 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3240 struct ipr_resource_entry *res;
3241 unsigned long lock_flags;
692aebfc 3242 int rc = -ENXIO;
1da177e4
LT		 3243
3244 sdev->hostdata = NULL;
3245
3246 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3247
3248 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3249 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3250 (res->cfgte.res_addr.target == sdev->id) &&
3251 (res->cfgte.res_addr.lun == sdev->lun)) {
3252 res->sdev = sdev;
3253 res->add_to_ml = 0;
3254 res->in_erp = 0;
3255 sdev->hostdata = res;
ee0a90fa
BK		 3256 if (!ipr_is_naca_model(res))
3257 res->needs_sync_complete = 1;
692aebfc 3258 rc = 0;
1da177e4
LT		 3259 break;
3260 }
3261 }
3262
3263 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3264
692aebfc 3265 return rc;
1da177e4
LT		 3266}
3267
3268/**
3269 * ipr_eh_host_reset - Reset the host adapter
3270 * @scsi_cmd: scsi command struct
3271 *
3272 * Return value:
3273 * SUCCESS / FAILED
3274 **/
df0ae249 3275static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3276{
3277 struct ipr_ioa_cfg *ioa_cfg;
3278 int rc;
3279
3280 ENTER;
3281 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3282
3283 dev_err(&ioa_cfg->pdev->dev,
3284 "Adapter being reset as a result of error recovery.\n");
3285
3286 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3287 ioa_cfg->sdt_state = GET_DUMP;
3288
3289 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3290
3291 LEAVE;
3292 return rc;
3293}
3294
df0ae249
JG		 3295static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3296{
3297 int rc;
3298
3299 spin_lock_irq(cmd->device->host->host_lock);
3300 rc = __ipr_eh_host_reset(cmd);
3301 spin_unlock_irq(cmd->device->host->host_lock);
3302
3303 return rc;
3304}
3305
1da177e4
LT		 3306/**
3307 * ipr_eh_dev_reset - Reset the device
3308 * @scsi_cmd: scsi command struct
3309 *
3310 * This function issues a device reset to the affected device.
3311 * A LUN reset will be sent to the device first. If that does
3312 * not work, a target reset will be sent.
3313 *
3314 * Return value:
3315 * SUCCESS / FAILED
3316 **/
94d0e7b8 3317static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3318{
3319 struct ipr_cmnd *ipr_cmd;
3320 struct ipr_ioa_cfg *ioa_cfg;
3321 struct ipr_resource_entry *res;
3322 struct ipr_cmd_pkt *cmd_pkt;
3323 u32 ioasc;
3324
3325 ENTER;
3326 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3327 res = scsi_cmd->device->hostdata;
3328
eeb88307 3329 if (!res)
1da177e4
LT		 3330 return FAILED;
3331
3332 /*
3333 * If we are currently going through reset/reload, return failed. This will force the
3334 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3335 * reset to complete
3336 */
3337 if (ioa_cfg->in_reset_reload)
3338 return FAILED;
3339 if (ioa_cfg->ioa_is_dead)
3340 return FAILED;
3341
3342 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3343 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3344 if (ipr_cmd->scsi_cmd)
3345 ipr_cmd->done = ipr_scsi_eh_done;
3346 }
3347 }
3348
3349 res->resetting_device = 1;
3350
3351 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3352
3353 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3354 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3355 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3356 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3357
3358 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
3359 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3360
3361 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3362
3363 res->resetting_device = 0;
3364
3365 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3366
3367 LEAVE;
3368 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3369}
3370
94d0e7b8
JG		 3371static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3372{
3373 int rc;
3374
3375 spin_lock_irq(cmd->device->host->host_lock);
3376 rc = __ipr_eh_dev_reset(cmd);
3377 spin_unlock_irq(cmd->device->host->host_lock);
3378
3379 return rc;
3380}
3381
1da177e4
LT		 3382/**
3383 * ipr_bus_reset_done - Op done function for bus reset.
3384 * @ipr_cmd: ipr command struct
3385 *
3386 * This function is the op done function for a bus reset
3387 *
3388 * Return value:
3389 * none
3390 **/
3391static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3392{
3393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3394 struct ipr_resource_entry *res;
3395
3396 ENTER;
3397 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3398 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3399 sizeof(res->cfgte.res_handle))) {
3400 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3401 break;
3402 }
3403 }
3404
3405 /*
3406 * If abort has not completed, indicate the reset has, else call the
3407 * abort's done function to wake the sleeping eh thread
3408 */
3409 if (ipr_cmd->sibling->sibling)
3410 ipr_cmd->sibling->sibling = NULL;
3411 else
3412 ipr_cmd->sibling->done(ipr_cmd->sibling);
3413
3414 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3415 LEAVE;
3416}
3417
3418/**
3419 * ipr_abort_timeout - An abort task has timed out
3420 * @ipr_cmd: ipr command struct
3421 *
3422 * This function handles when an abort task times out. If this
3423 * happens we issue a bus reset since we have resources tied
3424 * up that must be freed before returning to the midlayer.
3425 *
3426 * Return value:
3427 * none
3428 **/
3429static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3430{
3431 struct ipr_cmnd *reset_cmd;
3432 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3433 struct ipr_cmd_pkt *cmd_pkt;
3434 unsigned long lock_flags = 0;
3435
3436 ENTER;
3437 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3438 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3440 return;
3441 }
3442
3443 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3444 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3445 ipr_cmd->sibling = reset_cmd;
3446 reset_cmd->sibling = ipr_cmd;
3447 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3448 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3449 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3450 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3451 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3452
3453 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3455 LEAVE;
3456}
3457
3458/**
3459 * ipr_cancel_op - Cancel specified op
3460 * @scsi_cmd: scsi command struct
3461 *
3462 * This function cancels specified op.
3463 *
3464 * Return value:
3465 * SUCCESS / FAILED
3466 **/
3467static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3468{
3469 struct ipr_cmnd *ipr_cmd;
3470 struct ipr_ioa_cfg *ioa_cfg;
3471 struct ipr_resource_entry *res;
3472 struct ipr_cmd_pkt *cmd_pkt;
3473 u32 ioasc;
3474 int op_found = 0;
3475
3476 ENTER;
3477 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3478 res = scsi_cmd->device->hostdata;
3479
8fa728a2
JG		 3480 /* If we are currently going through reset/reload, return failed.
3481 * This will force the mid-layer to call ipr_eh_host_reset,
3482 * which will then go to sleep and wait for the reset to complete
3483 */
3484 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3485 return FAILED;
1da177e4
LT		 3486 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3487 return FAILED;
3488
3489 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3490 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3491 ipr_cmd->done = ipr_scsi_eh_done;
3492 op_found = 1;
3493 break;
3494 }
3495 }
3496
3497 if (!op_found)
3498 return SUCCESS;
3499
3500 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3501 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3502 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3503 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3504 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3505 ipr_cmd->u.sdev = scsi_cmd->device;
3506
3507 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3508 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3509 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3510
3511 /*
3512 * If the abort task timed out and we sent a bus reset, we will get
3513 * one the following responses to the abort
3514 */
3515 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3516 ioasc = 0;
3517 ipr_trace;
3518 }
3519
3520 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 3521 if (!ipr_is_naca_model(res))
3522 res->needs_sync_complete = 1;
1da177e4
LT		 3523
3524 LEAVE;
3525 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3526}
3527
3528/**
3529 * ipr_eh_abort - Abort a single op
3530 * @scsi_cmd: scsi command struct
3531 *
3532 * Return value:
3533 * SUCCESS / FAILED
3534 **/
3535static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3536{
8fa728a2
JG		 3537 unsigned long flags;
3538 int rc;
1da177e4
LT		 3539
3540 ENTER;
1da177e4 3541
8fa728a2
JG		 3542 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3543 rc = ipr_cancel_op(scsi_cmd);
3544 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 3545
3546 LEAVE;
8fa728a2 3547 return rc;
1da177e4
LT		 3548}
3549
3550/**
3551 * ipr_handle_other_interrupt - Handle "other" interrupts
3552 * @ioa_cfg: ioa config struct
3553 * @int_reg: interrupt register
3554 *
3555 * Return value:
3556 * IRQ_NONE / IRQ_HANDLED
3557 **/
3558static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3559 volatile u32 int_reg)
3560{
3561 irqreturn_t rc = IRQ_HANDLED;
3562
3563 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3564 /* Mask the interrupt */
3565 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3566
3567 /* Clear the interrupt */
3568 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3570
3571 list_del(&ioa_cfg->reset_cmd->queue);
3572 del_timer(&ioa_cfg->reset_cmd->timer);
3573 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3574 } else {
3575 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3576 ioa_cfg->ioa_unit_checked = 1;
3577 else
3578 dev_err(&ioa_cfg->pdev->dev,
3579 "Permanent IOA failure. 0x%08X\n", int_reg);
3580
3581 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3582 ioa_cfg->sdt_state = GET_DUMP;
3583
3584 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3585 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3586 }
3587
3588 return rc;
3589}
3590
3591/**
3592 * ipr_isr - Interrupt service routine
3593 * @irq: irq number
3594 * @devp: pointer to ioa config struct
3595 * @regs: pt_regs struct
3596 *
3597 * Return value:
3598 * IRQ_NONE / IRQ_HANDLED
3599 **/
3600static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3601{
3602 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3603 unsigned long lock_flags = 0;
3604 volatile u32 int_reg, int_mask_reg;
3605 u32 ioasc;
3606 u16 cmd_index;
3607 struct ipr_cmnd *ipr_cmd;
3608 irqreturn_t rc = IRQ_NONE;
3609
3610 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3611
3612 /* If interrupts are disabled, ignore the interrupt */
3613 if (!ioa_cfg->allow_interrupts) {
3614 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3615 return IRQ_NONE;
3616 }
3617
3618 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3619 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3620
3621 /* If an interrupt on the adapter did not occur, ignore it */
3622 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3623 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3624 return IRQ_NONE;
3625 }
3626
3627 while (1) {
3628 ipr_cmd = NULL;
3629
3630 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3631 ioa_cfg->toggle_bit) {
3632
3633 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3634 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3635
3636 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3637 ioa_cfg->errors_logged++;
3638 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3639
3640 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3641 ioa_cfg->sdt_state = GET_DUMP;
3642
3643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3645 return IRQ_HANDLED;
3646 }
3647
3648 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3649
3650 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3651
3652 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3653
3654 list_del(&ipr_cmd->queue);
3655 del_timer(&ipr_cmd->timer);
3656 ipr_cmd->done(ipr_cmd);
3657
3658 rc = IRQ_HANDLED;
3659
3660 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3661 ioa_cfg->hrrq_curr++;
3662 } else {
3663 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3664 ioa_cfg->toggle_bit ^= 1u;
3665 }
3666 }
3667
3668 if (ipr_cmd != NULL) {
3669 /* Clear the PCI interrupt */
3670 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3671 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3672 } else
3673 break;
3674 }
3675
3676 if (unlikely(rc == IRQ_NONE))
3677 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3678
3679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3680 return rc;
3681}
3682
3683/**
3684 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3685 * @ioa_cfg: ioa config struct
3686 * @ipr_cmd: ipr command struct
3687 *
3688 * Return value:
3689 * 0 on success / -1 on failure
3690 **/
3691static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3692 struct ipr_cmnd *ipr_cmd)
3693{
3694 int i;
3695 struct scatterlist *sglist;
3696 u32 length;
3697 u32 ioadl_flags = 0;
3698 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3699 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3700 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3701
3702 length = scsi_cmd->request_bufflen;
3703
3704 if (length == 0)
3705 return 0;
3706
3707 if (scsi_cmd->use_sg) {
3708 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3709 scsi_cmd->request_buffer,
3710 scsi_cmd->use_sg,
3711 scsi_cmd->sc_data_direction);
3712
3713 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3714 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3715 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3716 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3717 ioarcb->write_ioadl_len =
3718 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3719 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3720 ioadl_flags = IPR_IOADL_FLAGS_READ;
3721 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3722 ioarcb->read_ioadl_len =
3723 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3724 }
3725
3726 sglist = scsi_cmd->request_buffer;
3727
3728 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3729 ioadl[i].flags_and_data_len =
3730 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3731 ioadl[i].address =
3732 cpu_to_be32(sg_dma_address(&sglist[i]));
3733 }
3734
3735 if (likely(ipr_cmd->dma_use_sg)) {
3736 ioadl[i-1].flags_and_data_len |=
3737 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3738 return 0;
3739 } else
3740 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3741 } else {
3742 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3743 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3744 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3745 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3746 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3747 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3748 ioadl_flags = IPR_IOADL_FLAGS_READ;
3749 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3750 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3751 }
3752
3753 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3754 scsi_cmd->request_buffer, length,
3755 scsi_cmd->sc_data_direction);
3756
3757 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3758 ipr_cmd->dma_use_sg = 1;
3759 ioadl[0].flags_and_data_len =
3760 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3761 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3762 return 0;
3763 } else
3764 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3765 }
3766
3767 return -1;
3768}
3769
3770/**
3771 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3772 * @scsi_cmd: scsi command struct
3773 *
3774 * Return value:
3775 * task attributes
3776 **/
3777static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3778{
3779 u8 tag[2];
3780 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3781
3782 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3783 switch (tag[0]) {
3784 case MSG_SIMPLE_TAG:
3785 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3786 break;
3787 case MSG_HEAD_TAG:
3788 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3789 break;
3790 case MSG_ORDERED_TAG:
3791 rc = IPR_FLAGS_LO_ORDERED_TASK;
3792 break;
3793 };
3794 }
3795
3796 return rc;
3797}
3798
3799/**
3800 * ipr_erp_done - Process completion of ERP for a device
3801 * @ipr_cmd: ipr command struct
3802 *
3803 * This function copies the sense buffer into the scsi_cmd
3804 * struct and pushes the scsi_done function.
3805 *
3806 * Return value:
3807 * nothing
3808 **/
3809static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3810{
3811 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3812 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3814 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3815
3816 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3817 scsi_cmd->result |= (DID_ERROR << 16);
3818 ipr_sdev_err(scsi_cmd->device,
3819 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3820 } else {
3821 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3822 SCSI_SENSE_BUFFERSIZE);
3823 }
3824
3825 if (res) {
ee0a90fa
BK		 3826 if (!ipr_is_naca_model(res))
3827 res->needs_sync_complete = 1;
1da177e4
LT		 3828 res->in_erp = 0;
3829 }
3830 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3831 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3832 scsi_cmd->scsi_done(scsi_cmd);
3833}
3834
3835/**
3836 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3837 * @ipr_cmd: ipr command struct
3838 *
3839 * Return value:
3840 * none
3841 **/
3842static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3843{
3844 struct ipr_ioarcb *ioarcb;
3845 struct ipr_ioasa *ioasa;
3846
3847 ioarcb = &ipr_cmd->ioarcb;
3848 ioasa = &ipr_cmd->ioasa;
3849
3850 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3851 ioarcb->write_data_transfer_length = 0;
3852 ioarcb->read_data_transfer_length = 0;
3853 ioarcb->write_ioadl_len = 0;
3854 ioarcb->read_ioadl_len = 0;
3855 ioasa->ioasc = 0;
3856 ioasa->residual_data_len = 0;
3857}
3858
3859/**
3860 * ipr_erp_request_sense - Send request sense to a device
3861 * @ipr_cmd: ipr command struct
3862 *
3863 * This function sends a request sense to a device as a result
3864 * of a check condition.
3865 *
3866 * Return value:
3867 * nothing
3868 **/
3869static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3870{
3871 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3872 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3873
3874 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3875 ipr_erp_done(ipr_cmd);
3876 return;
3877 }
3878
3879 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3880
3881 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3882 cmd_pkt->cdb[0] = REQUEST_SENSE;
3883 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3884 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3885 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3886 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3887
3888 ipr_cmd->ioadl[0].flags_and_data_len =
3889 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3890 ipr_cmd->ioadl[0].address =
3891 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3892
3893 ipr_cmd->ioarcb.read_ioadl_len =
3894 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3895 ipr_cmd->ioarcb.read_data_transfer_length =
3896 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3897
3898 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3899 IPR_REQUEST_SENSE_TIMEOUT * 2);
3900}
3901
3902/**
3903 * ipr_erp_cancel_all - Send cancel all to a device
3904 * @ipr_cmd: ipr command struct
3905 *
3906 * This function sends a cancel all to a device to clear the
3907 * queue. If we are running TCQ on the device, QERR is set to 1,
3908 * which means all outstanding ops have been dropped on the floor.
3909 * Cancel all will return them to us.
3910 *
3911 * Return value:
3912 * nothing
3913 **/
3914static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3915{
3916 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3917 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3918 struct ipr_cmd_pkt *cmd_pkt;
3919
3920 res->in_erp = 1;
3921
3922 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3923
3924 if (!scsi_get_tag_type(scsi_cmd->device)) {
3925 ipr_erp_request_sense(ipr_cmd);
3926 return;
3927 }
3928
3929 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3930 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3931 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3932
3933 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3934 IPR_CANCEL_ALL_TIMEOUT);
3935}
3936
3937/**
3938 * ipr_dump_ioasa - Dump contents of IOASA
3939 * @ioa_cfg: ioa config struct
3940 * @ipr_cmd: ipr command struct
3941 *
3942 * This function is invoked by the interrupt handler when ops
3943 * fail. It will log the IOASA if appropriate. Only called
3944 * for GPDD ops.
3945 *
3946 * Return value:
3947 * none
3948 **/
3949static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3950 struct ipr_cmnd *ipr_cmd)
3951{
3952 int i;
3953 u16 data_len;
3954 u32 ioasc;
3955 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3956 __be32 *ioasa_data = (__be32 *)ioasa;
3957 int error_index;
3958
3959 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3960
3961 if (0 == ioasc)
3962 return;
3963
3964 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3965 return;
3966
3967 error_index = ipr_get_error(ioasc);
3968
3969 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3970 /* Don't log an error if the IOA already logged one */
3971 if (ioasa->ilid != 0)
3972 return;
3973
3974 if (ipr_error_table[error_index].log_ioasa == 0)
3975 return;
3976 }
3977
3978 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3979 ipr_error_table[error_index].error);
3980
3981 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3982 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3983 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3984 "Device End state: %s Phase: %s\n",
3985 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3986 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3987 }
3988
3989 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3990 data_len = sizeof(struct ipr_ioasa);
3991 else
3992 data_len = be16_to_cpu(ioasa->ret_stat_len);
3993
3994 ipr_err("IOASA Dump:\n");
3995
3996 for (i = 0; i < data_len / 4; i += 4) {
3997 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3998 be32_to_cpu(ioasa_data[i]),
3999 be32_to_cpu(ioasa_data[i+1]),
4000 be32_to_cpu(ioasa_data[i+2]),
4001 be32_to_cpu(ioasa_data[i+3]));
4002 }
4003}
4004
4005/**
4006 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4007 * @ioasa: IOASA
4008 * @sense_buf: sense data buffer
4009 *
4010 * Return value:
4011 * none
4012 **/
4013static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4014{
4015 u32 failing_lba;
4016 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4017 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4018 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4019 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4020
4021 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4022
4023 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4024 return;
4025
4026 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4027
4028 if (ipr_is_vset_device(res) &&
4029 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4030 ioasa->u.vset.failing_lba_hi != 0) {
4031 sense_buf[0] = 0x72;
4032 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4033 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4034 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4035
4036 sense_buf[7] = 12;
4037 sense_buf[8] = 0;
4038 sense_buf[9] = 0x0A;
4039 sense_buf[10] = 0x80;
4040
4041 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4042
4043 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4044 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4045 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4046 sense_buf[15] = failing_lba & 0x000000ff;
4047
4048 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4049
4050 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4051 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4052 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4053 sense_buf[19] = failing_lba & 0x000000ff;
4054 } else {
4055 sense_buf[0] = 0x70;
4056 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4057 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4058 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4059
4060 /* Illegal request */
4061 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4062 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4063 sense_buf[7] = 10; /* additional length */
4064
4065 /* IOARCB was in error */
4066 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4067 sense_buf[15] = 0xC0;
4068 else /* Parameter data was invalid */
4069 sense_buf[15] = 0x80;
4070
4071 sense_buf[16] =
4072 ((IPR_FIELD_POINTER_MASK &
4073 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4074 sense_buf[17] =
4075 (IPR_FIELD_POINTER_MASK &
4076 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4077 } else {
4078 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4079 if (ipr_is_vset_device(res))
4080 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4081 else
4082 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4083
4084 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4085 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4086 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4087 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4088 sense_buf[6] = failing_lba & 0x000000ff;
4089 }
4090
4091 sense_buf[7] = 6; /* additional length */
4092 }
4093 }
4094}
4095
ee0a90fa
BK		 4096/**
4097 * ipr_get_autosense - Copy autosense data to sense buffer
4098 * @ipr_cmd: ipr command struct
4099 *
4100 * This function copies the autosense buffer to the buffer
4101 * in the scsi_cmd, if there is autosense available.
4102 *
4103 * Return value:
4104 * 1 if autosense was available / 0 if not
4105 **/
4106static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4107{
4108 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4109
4110 if ((be32_to_cpu(ioasa->ioasc_specific) &
4111 (IPR_ADDITIONAL_STATUS_FMT | IPR_AUTOSENSE_VALID)) == 0)
4112 return 0;
4113
4114 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4115 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4116 SCSI_SENSE_BUFFERSIZE));
4117 return 1;
4118}
4119
1da177e4
LT		 4120/**
4121 * ipr_erp_start - Process an error response for a SCSI op
4122 * @ioa_cfg: ioa config struct
4123 * @ipr_cmd: ipr command struct
4124 *
4125 * This function determines whether or not to initiate ERP
4126 * on the affected device.
4127 *
4128 * Return value:
4129 * nothing
4130 **/
4131static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4132 struct ipr_cmnd *ipr_cmd)
4133{
4134 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4135 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4136 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4137
4138 if (!res) {
4139 ipr_scsi_eh_done(ipr_cmd);
4140 return;
4141 }
4142
4143 if (ipr_is_gscsi(res))
4144 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
4145 else
4146 ipr_gen_sense(ipr_cmd);
4147
4148 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4149 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4150 if (ipr_is_naca_model(res))
4151 scsi_cmd->result |= (DID_ABORT << 16);
4152 else
4153 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4154 break;
4155 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4156 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4157 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4158 break;
4159 case IPR_IOASC_HW_SEL_TIMEOUT:
4160 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4161 if (!ipr_is_naca_model(res))
4162 res->needs_sync_complete = 1;
1da177e4
LT		 4163 break;
4164 case IPR_IOASC_SYNC_REQUIRED:
4165 if (!res->in_erp)
4166 res->needs_sync_complete = 1;
4167 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4168 break;
4169 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4170 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4171 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4172 break;
4173 case IPR_IOASC_BUS_WAS_RESET:
4174 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4175 /*
4176 * Report the bus reset and ask for a retry. The device
4177 * will give CC/UA the next command.
4178 */
4179 if (!res->resetting_device)
4180 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4181 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4182 if (!ipr_is_naca_model(res))
4183 res->needs_sync_complete = 1;
1da177e4
LT		 4184 break;
4185 case IPR_IOASC_HW_DEV_BUS_STATUS:
4186 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4187 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4188 if (!ipr_get_autosense(ipr_cmd)) {
4189 if (!ipr_is_naca_model(res)) {
4190 ipr_erp_cancel_all(ipr_cmd);
4191 return;
4192 }
4193 }
1da177e4 4194 }
ee0a90fa
BK		 4195 if (!ipr_is_naca_model(res))
4196 res->needs_sync_complete = 1;
1da177e4
LT		 4197 break;
4198 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4199 break;
4200 default:
4201 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4202 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4203 res->needs_sync_complete = 1;
4204 break;
4205 }
4206
4207 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4208 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4209 scsi_cmd->scsi_done(scsi_cmd);
4210}
4211
4212/**
4213 * ipr_scsi_done - mid-layer done function
4214 * @ipr_cmd: ipr command struct
4215 *
4216 * This function is invoked by the interrupt handler for
4217 * ops generated by the SCSI mid-layer
4218 *
4219 * Return value:
4220 * none
4221 **/
4222static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4223{
4224 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4225 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4226 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4227
4228 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4229
4230 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4231 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4232 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4233 scsi_cmd->scsi_done(scsi_cmd);
4234 } else
4235 ipr_erp_start(ioa_cfg, ipr_cmd);
4236}
4237
1da177e4
LT		 4238/**
4239 * ipr_queuecommand - Queue a mid-layer request
4240 * @scsi_cmd: scsi command struct
4241 * @done: done function
4242 *
4243 * This function queues a request generated by the mid-layer.
4244 *
4245 * Return value:
4246 * 0 on success
4247 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4248 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4249 **/
4250static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4251 void (*done) (struct scsi_cmnd *))
4252{
4253 struct ipr_ioa_cfg *ioa_cfg;
4254 struct ipr_resource_entry *res;
4255 struct ipr_ioarcb *ioarcb;
4256 struct ipr_cmnd *ipr_cmd;
4257 int rc = 0;
4258
4259 scsi_cmd->scsi_done = done;
4260 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4261 res = scsi_cmd->device->hostdata;
4262 scsi_cmd->result = (DID_OK << 16);
4263
4264 /*
4265 * We are currently blocking all devices due to a host reset
4266 * We have told the host to stop giving us new requests, but
4267 * ERP ops don't count. FIXME
4268 */
4269 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4270 return SCSI_MLQUEUE_HOST_BUSY;
4271
4272 /*
4273 * FIXME - Create scsi_set_host_offline interface
4274 * and the ioa_is_dead check can be removed
4275 */
4276 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4277 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4278 scsi_cmd->result = (DID_NO_CONNECT << 16);
4279 scsi_cmd->scsi_done(scsi_cmd);
4280 return 0;
4281 }
4282
4283 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4284 ioarcb = &ipr_cmd->ioarcb;
4285 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4286
4287 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4288 ipr_cmd->scsi_cmd = scsi_cmd;
4289 ioarcb->res_handle = res->cfgte.res_handle;
4290 ipr_cmd->done = ipr_scsi_done;
4291 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4292
4293 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4294 if (scsi_cmd->underflow == 0)
4295 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4296
4297 if (res->needs_sync_complete) {
4298 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4299 res->needs_sync_complete = 0;
4300 }
4301
4302 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4303 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4304 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4305 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4306 }
4307
4308 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4309 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4310 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4311
1da177e4
LT		 4312 if (likely(rc == 0))
4313 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4314
4315 if (likely(rc == 0)) {
4316 mb();
4317 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4318 ioa_cfg->regs.ioarrin_reg);
4319 } else {
4320 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4321 return SCSI_MLQUEUE_HOST_BUSY;
4322 }
4323
4324 return 0;
4325}
4326
4327/**
4328 * ipr_info - Get information about the card/driver
4329 * @scsi_host: scsi host struct
4330 *
4331 * Return value:
4332 * pointer to buffer with description string
4333 **/
4334static const char * ipr_ioa_info(struct Scsi_Host *host)
4335{
4336 static char buffer[512];
4337 struct ipr_ioa_cfg *ioa_cfg;
4338 unsigned long lock_flags = 0;
4339
4340 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4341
4342 spin_lock_irqsave(host->host_lock, lock_flags);
4343 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4344 spin_unlock_irqrestore(host->host_lock, lock_flags);
4345
4346 return buffer;
4347}
4348
4349static struct scsi_host_template driver_template = {
4350 .module = THIS_MODULE,
4351 .name = "IPR",
4352 .info = ipr_ioa_info,
4353 .queuecommand = ipr_queuecommand,
4354 .eh_abort_handler = ipr_eh_abort,
4355 .eh_device_reset_handler = ipr_eh_dev_reset,
4356 .eh_host_reset_handler = ipr_eh_host_reset,
4357 .slave_alloc = ipr_slave_alloc,
4358 .slave_configure = ipr_slave_configure,
4359 .slave_destroy = ipr_slave_destroy,
4360 .change_queue_depth = ipr_change_queue_depth,
4361 .change_queue_type = ipr_change_queue_type,
4362 .bios_param = ipr_biosparam,
4363 .can_queue = IPR_MAX_COMMANDS,
4364 .this_id = -1,
4365 .sg_tablesize = IPR_MAX_SGLIST,
4366 .max_sectors = IPR_IOA_MAX_SECTORS,
4367 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4368 .use_clustering = ENABLE_CLUSTERING,
4369 .shost_attrs = ipr_ioa_attrs,
4370 .sdev_attrs = ipr_dev_attrs,
4371 .proc_name = IPR_NAME
4372};
4373
4374#ifdef CONFIG_PPC_PSERIES
4375static const u16 ipr_blocked_processors[] = {
4376 PV_NORTHSTAR,
4377 PV_PULSAR,
4378 PV_POWER4,
4379 PV_ICESTAR,
4380 PV_SSTAR,
4381 PV_POWER4p,
4382 PV_630,
4383 PV_630p
4384};
4385
4386/**
4387 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
4388 * @ioa_cfg: ioa cfg struct
4389 *
4390 * Adapters that use Gemstone revision < 3.1 do not work reliably on
4391 * certain pSeries hardware. This function determines if the given
4392 * adapter is in one of these confgurations or not.
4393 *
4394 * Return value:
4395 * 1 if adapter is not supported / 0 if adapter is supported
4396 **/
4397static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
4398{
4399 u8 rev_id;
4400 int i;
4401
4402 if (ioa_cfg->type == 0x5702) {
4403 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
4404 &rev_id) == PCIBIOS_SUCCESSFUL) {
4405 if (rev_id < 4) {
4406 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
4407 if (__is_processor(ipr_blocked_processors[i]))
4408 return 1;
4409 }
4410 }
4411 }
4412 }
4413 return 0;
4414}
4415#else
4416#define ipr_invalid_adapter(ioa_cfg) 0
4417#endif
4418
4419/**
4420 * ipr_ioa_bringdown_done - IOA bring down completion.
4421 * @ipr_cmd: ipr command struct
4422 *
4423 * This function processes the completion of an adapter bring down.
4424 * It wakes any reset sleepers.
4425 *
4426 * Return value:
4427 * IPR_RC_JOB_RETURN
4428 **/
4429static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4430{
4431 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4432
4433 ENTER;
4434 ioa_cfg->in_reset_reload = 0;
4435 ioa_cfg->reset_retries = 0;
4436 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4437 wake_up_all(&ioa_cfg->reset_wait_q);
4438
4439 spin_unlock_irq(ioa_cfg->host->host_lock);
4440 scsi_unblock_requests(ioa_cfg->host);
4441 spin_lock_irq(ioa_cfg->host->host_lock);
4442 LEAVE;
4443
4444 return IPR_RC_JOB_RETURN;
4445}
4446
4447/**
4448 * ipr_ioa_reset_done - IOA reset completion.
4449 * @ipr_cmd: ipr command struct
4450 *
4451 * This function processes the completion of an adapter reset.
4452 * It schedules any necessary mid-layer add/removes and
4453 * wakes any reset sleepers.
4454 *
4455 * Return value:
4456 * IPR_RC_JOB_RETURN
4457 **/
4458static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4459{
4460 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4461 struct ipr_resource_entry *res;
4462 struct ipr_hostrcb *hostrcb, *temp;
4463 int i = 0;
4464
4465 ENTER;
4466 ioa_cfg->in_reset_reload = 0;
4467 ioa_cfg->allow_cmds = 1;
4468 ioa_cfg->reset_cmd = NULL;
3d1d0da6 4469 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 4470
4471 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4472 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4473 ipr_trace;
4474 break;
4475 }
4476 }
4477 schedule_work(&ioa_cfg->work_q);
4478
4479 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4480 list_del(&hostrcb->queue);
4481 if (i++ < IPR_NUM_LOG_HCAMS)
4482 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4483 else
4484 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4485 }
4486
4487 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4488
4489 ioa_cfg->reset_retries = 0;
4490 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4491 wake_up_all(&ioa_cfg->reset_wait_q);
4492
4493 spin_unlock_irq(ioa_cfg->host->host_lock);
4494 scsi_unblock_requests(ioa_cfg->host);
4495 spin_lock_irq(ioa_cfg->host->host_lock);
4496
4497 if (!ioa_cfg->allow_cmds)
4498 scsi_block_requests(ioa_cfg->host);
4499
4500 LEAVE;
4501 return IPR_RC_JOB_RETURN;
4502}
4503
4504/**
4505 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4506 * @supported_dev: supported device struct
4507 * @vpids: vendor product id struct
4508 *
4509 * Return value:
4510 * none
4511 **/
4512static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4513 struct ipr_std_inq_vpids *vpids)
4514{
4515 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4516 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4517 supported_dev->num_records = 1;
4518 supported_dev->data_length =
4519 cpu_to_be16(sizeof(struct ipr_supported_device));
4520 supported_dev->reserved = 0;
4521}
4522
4523/**
4524 * ipr_set_supported_devs - Send Set Supported Devices for a device
4525 * @ipr_cmd: ipr command struct
4526 *
4527 * This function send a Set Supported Devices to the adapter
4528 *
4529 * Return value:
4530 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4531 **/
4532static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4533{
4534 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4535 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4536 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4537 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4538 struct ipr_resource_entry *res = ipr_cmd->u.res;
4539
4540 ipr_cmd->job_step = ipr_ioa_reset_done;
4541
4542 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
d0ad6f50 4543 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
1da177e4
LT		 4544 continue;
4545
4546 ipr_cmd->u.res = res;
4547 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4548
4549 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4550 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4551 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4552
4553 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4554 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4555 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4556
4557 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4558 sizeof(struct ipr_supported_device));
4559 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4560 offsetof(struct ipr_misc_cbs, supp_dev));
4561 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4562 ioarcb->write_data_transfer_length =
4563 cpu_to_be32(sizeof(struct ipr_supported_device));
4564
4565 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4566 IPR_SET_SUP_DEVICE_TIMEOUT);
4567
4568 ipr_cmd->job_step = ipr_set_supported_devs;
4569 return IPR_RC_JOB_RETURN;
4570 }
4571
4572 return IPR_RC_JOB_CONTINUE;
4573}
4574
62275040
BK		 4575/**
4576 * ipr_setup_write_cache - Disable write cache if needed
4577 * @ipr_cmd: ipr command struct
4578 *
4579 * This function sets up adapters write cache to desired setting
4580 *
4581 * Return value:
4582 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4583 **/
4584static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
4585{
4586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4587
4588 ipr_cmd->job_step = ipr_set_supported_devs;
4589 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4590 struct ipr_resource_entry, queue);
4591
4592 if (ioa_cfg->cache_state != CACHE_DISABLED)
4593 return IPR_RC_JOB_CONTINUE;
4594
4595 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4596 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4597 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
4598 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
4599
4600 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4601
4602 return IPR_RC_JOB_RETURN;
4603}
4604
1da177e4
LT		 4605/**
4606 * ipr_get_mode_page - Locate specified mode page
4607 * @mode_pages: mode page buffer
4608 * @page_code: page code to find
4609 * @len: minimum required length for mode page
4610 *
4611 * Return value:
4612 * pointer to mode page / NULL on failure
4613 **/
4614static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4615 u32 page_code, u32 len)
4616{
4617 struct ipr_mode_page_hdr *mode_hdr;
4618 u32 page_length;
4619 u32 length;
4620
4621 if (!mode_pages || (mode_pages->hdr.length == 0))
4622 return NULL;
4623
4624 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4625 mode_hdr = (struct ipr_mode_page_hdr *)
4626 (mode_pages->data + mode_pages->hdr.block_desc_len);
4627
4628 while (length) {
4629 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4630 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4631 return mode_hdr;
4632 break;
4633 } else {
4634 page_length = (sizeof(struct ipr_mode_page_hdr) +
4635 mode_hdr->page_length);
4636 length -= page_length;
4637 mode_hdr = (struct ipr_mode_page_hdr *)
4638 ((unsigned long)mode_hdr + page_length);
4639 }
4640 }
4641 return NULL;
4642}
4643
4644/**
4645 * ipr_check_term_power - Check for term power errors
4646 * @ioa_cfg: ioa config struct
4647 * @mode_pages: IOAFP mode pages buffer
4648 *
4649 * Check the IOAFP's mode page 28 for term power errors
4650 *
4651 * Return value:
4652 * nothing
4653 **/
4654static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4655 struct ipr_mode_pages *mode_pages)
4656{
4657 int i;
4658 int entry_length;
4659 struct ipr_dev_bus_entry *bus;
4660 struct ipr_mode_page28 *mode_page;
4661
4662 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4663 sizeof(struct ipr_mode_page28));
4664
4665 entry_length = mode_page->entry_length;
4666
4667 bus = mode_page->bus;
4668
4669 for (i = 0; i < mode_page->num_entries; i++) {
4670 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4671 dev_err(&ioa_cfg->pdev->dev,
4672 "Term power is absent on scsi bus %d\n",
4673 bus->res_addr.bus);
4674 }
4675
4676 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4677 }
4678}
4679
4680/**
4681 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4682 * @ioa_cfg: ioa config struct
4683 *
4684 * Looks through the config table checking for SES devices. If
4685 * the SES device is in the SES table indicating a maximum SCSI
4686 * bus speed, the speed is limited for the bus.
4687 *
4688 * Return value:
4689 * none
4690 **/
4691static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4692{
4693 u32 max_xfer_rate;
4694 int i;
4695
4696 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4697 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4698 ioa_cfg->bus_attr[i].bus_width);
4699
4700 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4701 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4702 }
4703}
4704
4705/**
4706 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4707 * @ioa_cfg: ioa config struct
4708 * @mode_pages: mode page 28 buffer
4709 *
4710 * Updates mode page 28 based on driver configuration
4711 *
4712 * Return value:
4713 * none
4714 **/
4715static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4716 struct ipr_mode_pages *mode_pages)
4717{
4718 int i, entry_length;
4719 struct ipr_dev_bus_entry *bus;
4720 struct ipr_bus_attributes *bus_attr;
4721 struct ipr_mode_page28 *mode_page;
4722
4723 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4724 sizeof(struct ipr_mode_page28));
4725
4726 entry_length = mode_page->entry_length;
4727
4728 /* Loop for each device bus entry */
4729 for (i = 0, bus = mode_page->bus;
4730 i < mode_page->num_entries;
4731 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4732 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4733 dev_err(&ioa_cfg->pdev->dev,
4734 "Invalid resource address reported: 0x%08X\n",
4735 IPR_GET_PHYS_LOC(bus->res_addr));
4736 continue;
4737 }
4738
4739 bus_attr = &ioa_cfg->bus_attr[i];
4740 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4741 bus->bus_width = bus_attr->bus_width;
4742 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4743 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4744 if (bus_attr->qas_enabled)
4745 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4746 else
4747 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4748 }
4749}
4750
4751/**
4752 * ipr_build_mode_select - Build a mode select command
4753 * @ipr_cmd: ipr command struct
4754 * @res_handle: resource handle to send command to
4755 * @parm: Byte 2 of Mode Sense command
4756 * @dma_addr: DMA buffer address
4757 * @xfer_len: data transfer length
4758 *
4759 * Return value:
4760 * none
4761 **/
4762static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4763 __be32 res_handle, u8 parm, u32 dma_addr,
4764 u8 xfer_len)
4765{
4766 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4767 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4768
4769 ioarcb->res_handle = res_handle;
4770 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4771 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4772 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4773 ioarcb->cmd_pkt.cdb[1] = parm;
4774 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4775
4776 ioadl->flags_and_data_len =
4777 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4778 ioadl->address = cpu_to_be32(dma_addr);
4779 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4780 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4781}
4782
4783/**
4784 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4785 * @ipr_cmd: ipr command struct
4786 *
4787 * This function sets up the SCSI bus attributes and sends
4788 * a Mode Select for Page 28 to activate them.
4789 *
4790 * Return value:
4791 * IPR_RC_JOB_RETURN
4792 **/
4793static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4794{
4795 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4796 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4797 int length;
4798
4799 ENTER;
4733804c
BK		 4800 ipr_scsi_bus_speed_limit(ioa_cfg);
4801 ipr_check_term_power(ioa_cfg, mode_pages);
4802 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4803 length = mode_pages->hdr.length + 1;
4804 mode_pages->hdr.length = 0;
1da177e4
LT		 4805
4806 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4807 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4808 length);
4809
62275040 4810 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 4811 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4812
4813 LEAVE;
4814 return IPR_RC_JOB_RETURN;
4815}
4816
4817/**
4818 * ipr_build_mode_sense - Builds a mode sense command
4819 * @ipr_cmd: ipr command struct
4820 * @res: resource entry struct
4821 * @parm: Byte 2 of mode sense command
4822 * @dma_addr: DMA address of mode sense buffer
4823 * @xfer_len: Size of DMA buffer
4824 *
4825 * Return value:
4826 * none
4827 **/
4828static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4829 __be32 res_handle,
4830 u8 parm, u32 dma_addr, u8 xfer_len)
4831{
4832 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4833 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4834
4835 ioarcb->res_handle = res_handle;
4836 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4837 ioarcb->cmd_pkt.cdb[2] = parm;
4838 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4839 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4840
4841 ioadl->flags_and_data_len =
4842 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4843 ioadl->address = cpu_to_be32(dma_addr);
4844 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4845 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4846}
4847
dfed823e
BK		 4848/**
4849 * ipr_reset_cmd_failed - Handle failure of IOA reset command
4850 * @ipr_cmd: ipr command struct
4851 *
4852 * This function handles the failure of an IOA bringup command.
4853 *
4854 * Return value:
4855 * IPR_RC_JOB_RETURN
4856 **/
4857static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
4858{
4859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4860 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4861
4862 dev_err(&ioa_cfg->pdev->dev,
4863 "0x%02X failed with IOASC: 0x%08X\n",
4864 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
4865
4866 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4867 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4868 return IPR_RC_JOB_RETURN;
4869}
4870
4871/**
4872 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
4873 * @ipr_cmd: ipr command struct
4874 *
4875 * This function handles the failure of a Mode Sense to the IOAFP.
4876 * Some adapters do not handle all mode pages.
4877 *
4878 * Return value:
4879 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4880 **/
4881static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
4882{
4883 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4884
4885 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
4886 ipr_cmd->job_step = ipr_setup_write_cache;
4887 return IPR_RC_JOB_CONTINUE;
4888 }
4889
4890 return ipr_reset_cmd_failed(ipr_cmd);
4891}
4892
1da177e4
LT		 4893/**
4894 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4895 * @ipr_cmd: ipr command struct
4896 *
4897 * This function send a Page 28 mode sense to the IOA to
4898 * retrieve SCSI bus attributes.
4899 *
4900 * Return value:
4901 * IPR_RC_JOB_RETURN
4902 **/
4903static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4904{
4905 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4906
4907 ENTER;
4908 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4909 0x28, ioa_cfg->vpd_cbs_dma +
4910 offsetof(struct ipr_misc_cbs, mode_pages),
4911 sizeof(struct ipr_mode_pages));
4912
4913 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 4914 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 4915
4916 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4917
4918 LEAVE;
4919 return IPR_RC_JOB_RETURN;
4920}
4921
4922/**
4923 * ipr_init_res_table - Initialize the resource table
4924 * @ipr_cmd: ipr command struct
4925 *
4926 * This function looks through the existing resource table, comparing
4927 * it with the config table. This function will take care of old/new
4928 * devices and schedule adding/removing them from the mid-layer
4929 * as appropriate.
4930 *
4931 * Return value:
4932 * IPR_RC_JOB_CONTINUE
4933 **/
4934static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4935{
4936 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4937 struct ipr_resource_entry *res, *temp;
4938 struct ipr_config_table_entry *cfgte;
4939 int found, i;
4940 LIST_HEAD(old_res);
4941
4942 ENTER;
4943 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4944 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4945
4946 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4947 list_move_tail(&res->queue, &old_res);
4948
4949 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4950 cfgte = &ioa_cfg->cfg_table->dev[i];
4951 found = 0;
4952
4953 list_for_each_entry_safe(res, temp, &old_res, queue) {
4954 if (!memcmp(&res->cfgte.res_addr,
4955 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4956 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4957 found = 1;
4958 break;
4959 }
4960 }
4961
4962 if (!found) {
4963 if (list_empty(&ioa_cfg->free_res_q)) {
4964 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4965 break;
4966 }
4967
4968 found = 1;
4969 res = list_entry(ioa_cfg->free_res_q.next,
4970 struct ipr_resource_entry, queue);
4971 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4972 ipr_init_res_entry(res);
4973 res->add_to_ml = 1;
4974 }
4975
4976 if (found)
4977 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4978 }
4979
4980 list_for_each_entry_safe(res, temp, &old_res, queue) {
4981 if (res->sdev) {
4982 res->del_from_ml = 1;
1121b794 4983 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 4984 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4985 } else {
4986 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4987 }
4988 }
4989
4990 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4991
4992 LEAVE;
4993 return IPR_RC_JOB_CONTINUE;
4994}
4995
4996/**
4997 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4998 * @ipr_cmd: ipr command struct
4999 *
5000 * This function sends a Query IOA Configuration command
5001 * to the adapter to retrieve the IOA configuration table.
5002 *
5003 * Return value:
5004 * IPR_RC_JOB_RETURN
5005 **/
5006static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5007{
5008 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5009 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5010 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5011 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5012
5013 ENTER;
5014 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5015 ucode_vpd->major_release, ucode_vpd->card_type,
5016 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5017 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5018 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5019
5020 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5021 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5022 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5023
5024 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5025 ioarcb->read_data_transfer_length =
5026 cpu_to_be32(sizeof(struct ipr_config_table));
5027
5028 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5029 ioadl->flags_and_data_len =
5030 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5031
5032 ipr_cmd->job_step = ipr_init_res_table;
5033
5034 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5035
5036 LEAVE;
5037 return IPR_RC_JOB_RETURN;
5038}
5039
5040/**
5041 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5042 * @ipr_cmd: ipr command struct
5043 *
5044 * This utility function sends an inquiry to the adapter.
5045 *
5046 * Return value:
5047 * none
5048 **/
5049static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5050 u32 dma_addr, u8 xfer_len)
5051{
5052 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5053 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5054
5055 ENTER;
5056 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5057 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5058
5059 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5060 ioarcb->cmd_pkt.cdb[1] = flags;
5061 ioarcb->cmd_pkt.cdb[2] = page;
5062 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5063
5064 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5065 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5066
5067 ioadl->address = cpu_to_be32(dma_addr);
5068 ioadl->flags_and_data_len =
5069 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5070
5071 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5072 LEAVE;
5073}
5074
62275040
BK		 5075/**
5076 * ipr_inquiry_page_supported - Is the given inquiry page supported
5077 * @page0: inquiry page 0 buffer
5078 * @page: page code.
5079 *
5080 * This function determines if the specified inquiry page is supported.
5081 *
5082 * Return value:
5083 * 1 if page is supported / 0 if not
5084 **/
5085static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5086{
5087 int i;
5088
5089 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5090 if (page0->page[i] == page)
5091 return 1;
5092
5093 return 0;
5094}
5095
1da177e4
LT		 5096/**
5097 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5098 * @ipr_cmd: ipr command struct
5099 *
5100 * This function sends a Page 3 inquiry to the adapter
5101 * to retrieve software VPD information.
5102 *
5103 * Return value:
5104 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5105 **/
5106static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 5107{
5108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5109 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5110
5111 ENTER;
5112
5113 if (!ipr_inquiry_page_supported(page0, 1))
5114 ioa_cfg->cache_state = CACHE_NONE;
5115
5116 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5117
5118 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5119 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5120 sizeof(struct ipr_inquiry_page3));
5121
5122 LEAVE;
5123 return IPR_RC_JOB_RETURN;
5124}
5125
5126/**
5127 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5128 * @ipr_cmd: ipr command struct
5129 *
5130 * This function sends a Page 0 inquiry to the adapter
5131 * to retrieve supported inquiry pages.
5132 *
5133 * Return value:
5134 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5135 **/
5136static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 5137{
5138 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5139 char type[5];
5140
5141 ENTER;
5142
5143 /* Grab the type out of the VPD and store it away */
5144 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5145 type[4] = '\0';
5146 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5147
62275040 5148 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 5149
62275040
BK		 5150 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
5151 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
5152 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 5153
5154 LEAVE;
5155 return IPR_RC_JOB_RETURN;
5156}
5157
5158/**
5159 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
5160 * @ipr_cmd: ipr command struct
5161 *
5162 * This function sends a standard inquiry to the adapter.
5163 *
5164 * Return value:
5165 * IPR_RC_JOB_RETURN
5166 **/
5167static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
5168{
5169 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5170
5171 ENTER;
62275040 5172 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 5173
5174 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
5175 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
5176 sizeof(struct ipr_ioa_vpd));
5177
5178 LEAVE;
5179 return IPR_RC_JOB_RETURN;
5180}
5181
5182/**
5183 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
5184 * @ipr_cmd: ipr command struct
5185 *
5186 * This function send an Identify Host Request Response Queue
5187 * command to establish the HRRQ with the adapter.
5188 *
5189 * Return value:
5190 * IPR_RC_JOB_RETURN
5191 **/
5192static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
5193{
5194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5195 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5196
5197 ENTER;
5198 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
5199
5200 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
5201 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5202
5203 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5204 ioarcb->cmd_pkt.cdb[2] =
5205 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
5206 ioarcb->cmd_pkt.cdb[3] =
5207 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
5208 ioarcb->cmd_pkt.cdb[4] =
5209 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
5210 ioarcb->cmd_pkt.cdb[5] =
5211 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
5212 ioarcb->cmd_pkt.cdb[7] =
5213 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
5214 ioarcb->cmd_pkt.cdb[8] =
5215 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
5216
5217 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
5218
5219 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5220
5221 LEAVE;
5222 return IPR_RC_JOB_RETURN;
5223}
5224
5225/**
5226 * ipr_reset_timer_done - Adapter reset timer function
5227 * @ipr_cmd: ipr command struct
5228 *
5229 * Description: This function is used in adapter reset processing
5230 * for timing events. If the reset_cmd pointer in the IOA
5231 * config struct is not this adapter's we are doing nested
5232 * resets and fail_all_ops will take care of freeing the
5233 * command block.
5234 *
5235 * Return value:
5236 * none
5237 **/
5238static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
5239{
5240 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5241 unsigned long lock_flags = 0;
5242
5243 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5244
5245 if (ioa_cfg->reset_cmd == ipr_cmd) {
5246 list_del(&ipr_cmd->queue);
5247 ipr_cmd->done(ipr_cmd);
5248 }
5249
5250 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5251}
5252
5253/**
5254 * ipr_reset_start_timer - Start a timer for adapter reset job
5255 * @ipr_cmd: ipr command struct
5256 * @timeout: timeout value
5257 *
5258 * Description: This function is used in adapter reset processing
5259 * for timing events. If the reset_cmd pointer in the IOA
5260 * config struct is not this adapter's we are doing nested
5261 * resets and fail_all_ops will take care of freeing the
5262 * command block.
5263 *
5264 * Return value:
5265 * none
5266 **/
5267static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
5268 unsigned long timeout)
5269{
5270 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5271 ipr_cmd->done = ipr_reset_ioa_job;
5272
5273 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5274 ipr_cmd->timer.expires = jiffies + timeout;
5275 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
5276 add_timer(&ipr_cmd->timer);
5277}
5278
5279/**
5280 * ipr_init_ioa_mem - Initialize ioa_cfg control block
5281 * @ioa_cfg: ioa cfg struct
5282 *
5283 * Return value:
5284 * nothing
5285 **/
5286static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
5287{
5288 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
5289
5290 /* Initialize Host RRQ pointers */
5291 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
5292 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
5293 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5294 ioa_cfg->toggle_bit = 1;
5295
5296 /* Zero out config table */
5297 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
5298}
5299
5300/**
5301 * ipr_reset_enable_ioa - Enable the IOA following a reset.
5302 * @ipr_cmd: ipr command struct
5303 *
5304 * This function reinitializes some control blocks and
5305 * enables destructive diagnostics on the adapter.
5306 *
5307 * Return value:
5308 * IPR_RC_JOB_RETURN
5309 **/
5310static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
5311{
5312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5313 volatile u32 int_reg;
5314
5315 ENTER;
5316 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
5317 ipr_init_ioa_mem(ioa_cfg);
5318
5319 ioa_cfg->allow_interrupts = 1;
5320 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5321
5322 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5323 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
5324 ioa_cfg->regs.clr_interrupt_mask_reg);
5325 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5326 return IPR_RC_JOB_CONTINUE;
5327 }
5328
5329 /* Enable destructive diagnostics on IOA */
3d1d0da6 5330 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 5331
5332 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
5333 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5334
5335 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
5336
5337 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5338 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
5339 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
5340 ipr_cmd->done = ipr_reset_ioa_job;
5341 add_timer(&ipr_cmd->timer);
5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5343
5344 LEAVE;
5345 return IPR_RC_JOB_RETURN;
5346}
5347
5348/**
5349 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
5350 * @ipr_cmd: ipr command struct
5351 *
5352 * This function is invoked when an adapter dump has run out
5353 * of processing time.
5354 *
5355 * Return value:
5356 * IPR_RC_JOB_CONTINUE
5357 **/
5358static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
5359{
5360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5361
5362 if (ioa_cfg->sdt_state == GET_DUMP)
5363 ioa_cfg->sdt_state = ABORT_DUMP;
5364
5365 ipr_cmd->job_step = ipr_reset_alert;
5366
5367 return IPR_RC_JOB_CONTINUE;
5368}
5369
5370/**
5371 * ipr_unit_check_no_data - Log a unit check/no data error log
5372 * @ioa_cfg: ioa config struct
5373 *
5374 * Logs an error indicating the adapter unit checked, but for some
5375 * reason, we were unable to fetch the unit check buffer.
5376 *
5377 * Return value:
5378 * nothing
5379 **/
5380static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
5381{
5382 ioa_cfg->errors_logged++;
5383 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
5384}
5385
5386/**
5387 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
5388 * @ioa_cfg: ioa config struct
5389 *
5390 * Fetches the unit check buffer from the adapter by clocking the data
5391 * through the mailbox register.
5392 *
5393 * Return value:
5394 * nothing
5395 **/
5396static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
5397{
5398 unsigned long mailbox;
5399 struct ipr_hostrcb *hostrcb;
5400 struct ipr_uc_sdt sdt;
5401 int rc, length;
5402
5403 mailbox = readl(ioa_cfg->ioa_mailbox);
5404
5405 if (!ipr_sdt_is_fmt2(mailbox)) {
5406 ipr_unit_check_no_data(ioa_cfg);
5407 return;
5408 }
5409
5410 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
5411 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
5412 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
5413
5414 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
5415 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
5416 ipr_unit_check_no_data(ioa_cfg);
5417 return;
5418 }
5419
5420 /* Find length of the first sdt entry (UC buffer) */
5421 length = (be32_to_cpu(sdt.entry[0].end_offset) -
5422 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
5423
5424 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
5425 struct ipr_hostrcb, queue);
5426 list_del(&hostrcb->queue);
5427 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
5428
5429 rc = ipr_get_ldump_data_section(ioa_cfg,
5430 be32_to_cpu(sdt.entry[0].bar_str_offset),
5431 (__be32 *)&hostrcb->hcam,
5432 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
5433
5434 if (!rc)
5435 ipr_handle_log_data(ioa_cfg, hostrcb);
5436 else
5437 ipr_unit_check_no_data(ioa_cfg);
5438
5439 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
5440}
5441
5442/**
5443 * ipr_reset_restore_cfg_space - Restore PCI config space.
5444 * @ipr_cmd: ipr command struct
5445 *
5446 * Description: This function restores the saved PCI config space of
5447 * the adapter, fails all outstanding ops back to the callers, and
5448 * fetches the dump/unit check if applicable to this reset.
5449 *
5450 * Return value:
5451 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5452 **/
5453static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
5454{
5455 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5456 int rc;
5457
5458 ENTER;
b30197d2 5459 pci_unblock_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 5460 rc = pci_restore_state(ioa_cfg->pdev);
5461
5462 if (rc != PCIBIOS_SUCCESSFUL) {
5463 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5464 return IPR_RC_JOB_CONTINUE;
5465 }
5466
5467 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
5468 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5469 return IPR_RC_JOB_CONTINUE;
5470 }
5471
5472 ipr_fail_all_ops(ioa_cfg);
5473
5474 if (ioa_cfg->ioa_unit_checked) {
5475 ioa_cfg->ioa_unit_checked = 0;
5476 ipr_get_unit_check_buffer(ioa_cfg);
5477 ipr_cmd->job_step = ipr_reset_alert;
5478 ipr_reset_start_timer(ipr_cmd, 0);
5479 return IPR_RC_JOB_RETURN;
5480 }
5481
5482 if (ioa_cfg->in_ioa_bringdown) {
5483 ipr_cmd->job_step = ipr_ioa_bringdown_done;
5484 } else {
5485 ipr_cmd->job_step = ipr_reset_enable_ioa;
5486
5487 if (GET_DUMP == ioa_cfg->sdt_state) {
5488 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
5489 ipr_cmd->job_step = ipr_reset_wait_for_dump;
5490 schedule_work(&ioa_cfg->work_q);
5491 return IPR_RC_JOB_RETURN;
5492 }
5493 }
5494
5495 ENTER;
5496 return IPR_RC_JOB_CONTINUE;
5497}
5498
5499/**
5500 * ipr_reset_start_bist - Run BIST on the adapter.
5501 * @ipr_cmd: ipr command struct
5502 *
5503 * Description: This function runs BIST on the adapter, then delays 2 seconds.
5504 *
5505 * Return value:
5506 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5507 **/
5508static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
5509{
5510 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5511 int rc;
5512
5513 ENTER;
b30197d2 5514 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 5515 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
5516
5517 if (rc != PCIBIOS_SUCCESSFUL) {
5518 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5519 rc = IPR_RC_JOB_CONTINUE;
5520 } else {
5521 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
5522 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
5523 rc = IPR_RC_JOB_RETURN;
5524 }
5525
5526 LEAVE;
5527 return rc;
5528}
5529
5530/**
5531 * ipr_reset_allowed - Query whether or not IOA can be reset
5532 * @ioa_cfg: ioa config struct
5533 *
5534 * Return value:
5535 * 0 if reset not allowed / non-zero if reset is allowed
5536 **/
5537static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5538{
5539 volatile u32 temp_reg;
5540
5541 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5542 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5543}
5544
5545/**
5546 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5547 * @ipr_cmd: ipr command struct
5548 *
5549 * Description: This function waits for adapter permission to run BIST,
5550 * then runs BIST. If the adapter does not give permission after a
5551 * reasonable time, we will reset the adapter anyway. The impact of
5552 * resetting the adapter without warning the adapter is the risk of
5553 * losing the persistent error log on the adapter. If the adapter is
5554 * reset while it is writing to the flash on the adapter, the flash
5555 * segment will have bad ECC and be zeroed.
5556 *
5557 * Return value:
5558 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5559 **/
5560static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5561{
5562 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5563 int rc = IPR_RC_JOB_RETURN;
5564
5565 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5566 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5567 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5568 } else {
5569 ipr_cmd->job_step = ipr_reset_start_bist;
5570 rc = IPR_RC_JOB_CONTINUE;
5571 }
5572
5573 return rc;
5574}
5575
5576/**
5577 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5578 * @ipr_cmd: ipr command struct
5579 *
5580 * Description: This function alerts the adapter that it will be reset.
5581 * If memory space is not currently enabled, proceed directly
5582 * to running BIST on the adapter. The timer must always be started
5583 * so we guarantee we do not run BIST from ipr_isr.
5584 *
5585 * Return value:
5586 * IPR_RC_JOB_RETURN
5587 **/
5588static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5589{
5590 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5591 u16 cmd_reg;
5592 int rc;
5593
5594 ENTER;
5595 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5596
5597 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5598 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5599 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5600 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5601 } else {
5602 ipr_cmd->job_step = ipr_reset_start_bist;
5603 }
5604
5605 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5606 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5607
5608 LEAVE;
5609 return IPR_RC_JOB_RETURN;
5610}
5611
5612/**
5613 * ipr_reset_ucode_download_done - Microcode download completion
5614 * @ipr_cmd: ipr command struct
5615 *
5616 * Description: This function unmaps the microcode download buffer.
5617 *
5618 * Return value:
5619 * IPR_RC_JOB_CONTINUE
5620 **/
5621static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5622{
5623 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5624 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5625
5626 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5627 sglist->num_sg, DMA_TO_DEVICE);
5628
5629 ipr_cmd->job_step = ipr_reset_alert;
5630 return IPR_RC_JOB_CONTINUE;
5631}
5632
5633/**
5634 * ipr_reset_ucode_download - Download microcode to the adapter
5635 * @ipr_cmd: ipr command struct
5636 *
5637 * Description: This function checks to see if it there is microcode
5638 * to download to the adapter. If there is, a download is performed.
5639 *
5640 * Return value:
5641 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5642 **/
5643static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5644{
5645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5646 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5647
5648 ENTER;
5649 ipr_cmd->job_step = ipr_reset_alert;
5650
5651 if (!sglist)
5652 return IPR_RC_JOB_CONTINUE;
5653
5654 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5655 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5656 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5657 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5658 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5659 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5660 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5661
12baa420 5662 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 5663 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5664
5665 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5666 IPR_WRITE_BUFFER_TIMEOUT);
5667
5668 LEAVE;
5669 return IPR_RC_JOB_RETURN;
5670}
5671
5672/**
5673 * ipr_reset_shutdown_ioa - Shutdown the adapter
5674 * @ipr_cmd: ipr command struct
5675 *
5676 * Description: This function issues an adapter shutdown of the
5677 * specified type to the specified adapter as part of the
5678 * adapter reset job.
5679 *
5680 * Return value:
5681 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5682 **/
5683static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5684{
5685 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5686 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5687 unsigned long timeout;
5688 int rc = IPR_RC_JOB_CONTINUE;
5689
5690 ENTER;
5691 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5692 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5693 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5694 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5695 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5696
5697 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5698 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5699 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5700 timeout = IPR_INTERNAL_TIMEOUT;
5701 else
5702 timeout = IPR_SHUTDOWN_TIMEOUT;
5703
5704 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5705
5706 rc = IPR_RC_JOB_RETURN;
5707 ipr_cmd->job_step = ipr_reset_ucode_download;
5708 } else
5709 ipr_cmd->job_step = ipr_reset_alert;
5710
5711 LEAVE;
5712 return rc;
5713}
5714
5715/**
5716 * ipr_reset_ioa_job - Adapter reset job
5717 * @ipr_cmd: ipr command struct
5718 *
5719 * Description: This function is the job router for the adapter reset job.
5720 *
5721 * Return value:
5722 * none
5723 **/
5724static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5725{
5726 u32 rc, ioasc;
1da177e4
LT		 5727 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5728
5729 do {
5730 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5731
5732 if (ioa_cfg->reset_cmd != ipr_cmd) {
5733 /*
5734 * We are doing nested adapter resets and this is
5735 * not the current reset job.
5736 */
5737 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5738 return;
5739 }
5740
5741 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 5742 rc = ipr_cmd->job_step_failed(ipr_cmd);
5743 if (rc == IPR_RC_JOB_RETURN)
5744 return;
1da177e4
LT		 5745 }
5746
5747 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 5748 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 5749 rc = ipr_cmd->job_step(ipr_cmd);
5750 } while(rc == IPR_RC_JOB_CONTINUE);
5751}
5752
5753/**
5754 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5755 * @ioa_cfg: ioa config struct
5756 * @job_step: first job step of reset job
5757 * @shutdown_type: shutdown type
5758 *
5759 * Description: This function will initiate the reset of the given adapter
5760 * starting at the selected job step.
5761 * If the caller needs to wait on the completion of the reset,
5762 * the caller must sleep on the reset_wait_q.
5763 *
5764 * Return value:
5765 * none
5766 **/
5767static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5768 int (*job_step) (struct ipr_cmnd *),
5769 enum ipr_shutdown_type shutdown_type)
5770{
5771 struct ipr_cmnd *ipr_cmd;
5772
5773 ioa_cfg->in_reset_reload = 1;
5774 ioa_cfg->allow_cmds = 0;
5775 scsi_block_requests(ioa_cfg->host);
5776
5777 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5778 ioa_cfg->reset_cmd = ipr_cmd;
5779 ipr_cmd->job_step = job_step;
5780 ipr_cmd->u.shutdown_type = shutdown_type;
5781
5782 ipr_reset_ioa_job(ipr_cmd);
5783}
5784
5785/**
5786 * ipr_initiate_ioa_reset - Initiate an adapter reset
5787 * @ioa_cfg: ioa config struct
5788 * @shutdown_type: shutdown type
5789 *
5790 * Description: This function will initiate the reset of the given adapter.
5791 * If the caller needs to wait on the completion of the reset,
5792 * the caller must sleep on the reset_wait_q.
5793 *
5794 * Return value:
5795 * none
5796 **/
5797static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5798 enum ipr_shutdown_type shutdown_type)
5799{
5800 if (ioa_cfg->ioa_is_dead)
5801 return;
5802
5803 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5804 ioa_cfg->sdt_state = ABORT_DUMP;
5805
5806 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5807 dev_err(&ioa_cfg->pdev->dev,
5808 "IOA taken offline - error recovery failed\n");
5809
5810 ioa_cfg->reset_retries = 0;
5811 ioa_cfg->ioa_is_dead = 1;
5812
5813 if (ioa_cfg->in_ioa_bringdown) {
5814 ioa_cfg->reset_cmd = NULL;
5815 ioa_cfg->in_reset_reload = 0;
5816 ipr_fail_all_ops(ioa_cfg);
5817 wake_up_all(&ioa_cfg->reset_wait_q);
5818
5819 spin_unlock_irq(ioa_cfg->host->host_lock);
5820 scsi_unblock_requests(ioa_cfg->host);
5821 spin_lock_irq(ioa_cfg->host->host_lock);
5822 return;
5823 } else {
5824 ioa_cfg->in_ioa_bringdown = 1;
5825 shutdown_type = IPR_SHUTDOWN_NONE;
5826 }
5827 }
5828
5829 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5830 shutdown_type);
5831}
5832
f8a88b19
LV		 5833/**
5834 * ipr_reset_freeze - Hold off all I/O activity
5835 * @ipr_cmd: ipr command struct
5836 *
5837 * Description: If the PCI slot is frozen, hold off all I/O
5838 * activity; then, as soon as the slot is available again,
5839 * initiate an adapter reset.
5840 */
5841static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
5842{
5843 /* Disallow new interrupts, avoid loop */
5844 ipr_cmd->ioa_cfg->allow_interrupts = 0;
5845 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5846 ipr_cmd->done = ipr_reset_ioa_job;
5847 return IPR_RC_JOB_RETURN;
5848}
5849
5850/**
5851 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
5852 * @pdev: PCI device struct
5853 *
5854 * Description: This routine is called to tell us that the PCI bus
5855 * is down. Can't do anything here, except put the device driver
5856 * into a holding pattern, waiting for the PCI bus to come back.
5857 */
5858static void ipr_pci_frozen(struct pci_dev *pdev)
5859{
5860 unsigned long flags = 0;
5861 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5862
5863 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5864 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
5865 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5866}
5867
5868/**
5869 * ipr_pci_slot_reset - Called when PCI slot has been reset.
5870 * @pdev: PCI device struct
5871 *
5872 * Description: This routine is called by the pci error recovery
5873 * code after the PCI slot has been reset, just before we
5874 * should resume normal operations.
5875 */
5876static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
5877{
5878 unsigned long flags = 0;
5879 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5880
5881 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5882 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
5883 IPR_SHUTDOWN_NONE);
5884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5885 return PCI_ERS_RESULT_RECOVERED;
5886}
5887
5888/**
5889 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
5890 * @pdev: PCI device struct
5891 *
5892 * Description: This routine is called when the PCI bus has
5893 * permanently failed.
5894 */
5895static void ipr_pci_perm_failure(struct pci_dev *pdev)
5896{
5897 unsigned long flags = 0;
5898 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5899
5900 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5901 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5902 ioa_cfg->sdt_state = ABORT_DUMP;
5903 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
5904 ioa_cfg->in_ioa_bringdown = 1;
5905 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5906 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5907}
5908
5909/**
5910 * ipr_pci_error_detected - Called when a PCI error is detected.
5911 * @pdev: PCI device struct
5912 * @state: PCI channel state
5913 *
5914 * Description: Called when a PCI error is detected.
5915 *
5916 * Return value:
5917 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
5918 */
5919static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
5920 pci_channel_state_t state)
5921{
5922 switch (state) {
5923 case pci_channel_io_frozen:
5924 ipr_pci_frozen(pdev);
5925 return PCI_ERS_RESULT_NEED_RESET;
5926 case pci_channel_io_perm_failure:
5927 ipr_pci_perm_failure(pdev);
5928 return PCI_ERS_RESULT_DISCONNECT;
5929 break;
5930 default:
5931 break;
5932 }
5933 return PCI_ERS_RESULT_NEED_RESET;
5934}
5935
1da177e4
LT		 5936/**
5937 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5938 * @ioa_cfg: ioa cfg struct
5939 *
5940 * Description: This is the second phase of adapter intialization
5941 * This function takes care of initilizing the adapter to the point
5942 * where it can accept new commands.
5943
5944 * Return value:
5945 * 0 on sucess / -EIO on failure
5946 **/
5947static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5948{
5949 int rc = 0;
5950 unsigned long host_lock_flags = 0;
5951
5952 ENTER;
5953 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5954 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 5955 if (ioa_cfg->needs_hard_reset) {
5956 ioa_cfg->needs_hard_reset = 0;
5957 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5958 } else
5959 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
5960 IPR_SHUTDOWN_NONE);
1da177e4
LT		 5961
5962 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5963 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5964 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5965
5966 if (ioa_cfg->ioa_is_dead) {
5967 rc = -EIO;
5968 } else if (ipr_invalid_adapter(ioa_cfg)) {
5969 if (!ipr_testmode)
5970 rc = -EIO;
5971
5972 dev_err(&ioa_cfg->pdev->dev,
5973 "Adapter not supported in this hardware configuration.\n");
5974 }
5975
5976 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5977
5978 LEAVE;
5979 return rc;
5980}
5981
5982/**
5983 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5984 * @ioa_cfg: ioa config struct
5985 *
5986 * Return value:
5987 * none
5988 **/
5989static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5990{
5991 int i;
5992
5993 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5994 if (ioa_cfg->ipr_cmnd_list[i])
5995 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5996 ioa_cfg->ipr_cmnd_list[i],
5997 ioa_cfg->ipr_cmnd_list_dma[i]);
5998
5999 ioa_cfg->ipr_cmnd_list[i] = NULL;
6000 }
6001
6002 if (ioa_cfg->ipr_cmd_pool)
6003 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6004
6005 ioa_cfg->ipr_cmd_pool = NULL;
6006}
6007
6008/**
6009 * ipr_free_mem - Frees memory allocated for an adapter
6010 * @ioa_cfg: ioa cfg struct
6011 *
6012 * Return value:
6013 * nothing
6014 **/
6015static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6016{
6017 int i;
6018
6019 kfree(ioa_cfg->res_entries);
6020 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6021 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6022 ipr_free_cmd_blks(ioa_cfg);
6023 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6024 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6025 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6026 ioa_cfg->cfg_table,
6027 ioa_cfg->cfg_table_dma);
6028
6029 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6030 pci_free_consistent(ioa_cfg->pdev,
6031 sizeof(struct ipr_hostrcb),
6032 ioa_cfg->hostrcb[i],
6033 ioa_cfg->hostrcb_dma[i]);
6034 }
6035
6036 ipr_free_dump(ioa_cfg);
1da177e4
LT		 6037 kfree(ioa_cfg->trace);
6038}
6039
6040/**
6041 * ipr_free_all_resources - Free all allocated resources for an adapter.
6042 * @ipr_cmd: ipr command struct
6043 *
6044 * This function frees all allocated resources for the
6045 * specified adapter.
6046 *
6047 * Return value:
6048 * none
6049 **/
6050static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6051{
6052 struct pci_dev *pdev = ioa_cfg->pdev;
6053
6054 ENTER;
6055 free_irq(pdev->irq, ioa_cfg);
6056 iounmap(ioa_cfg->hdw_dma_regs);
6057 pci_release_regions(pdev);
6058 ipr_free_mem(ioa_cfg);
6059 scsi_host_put(ioa_cfg->host);
6060 pci_disable_device(pdev);
6061 LEAVE;
6062}
6063
6064/**
6065 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6066 * @ioa_cfg: ioa config struct
6067 *
6068 * Return value:
6069 * 0 on success / -ENOMEM on allocation failure
6070 **/
6071static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6072{
6073 struct ipr_cmnd *ipr_cmd;
6074 struct ipr_ioarcb *ioarcb;
6075 dma_addr_t dma_addr;
6076 int i;
6077
6078 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6079 sizeof(struct ipr_cmnd), 8, 0);
6080
6081 if (!ioa_cfg->ipr_cmd_pool)
6082 return -ENOMEM;
6083
6084 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6085 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
6086
6087 if (!ipr_cmd) {
6088 ipr_free_cmd_blks(ioa_cfg);
6089 return -ENOMEM;
6090 }
6091
6092 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6093 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6094 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6095
6096 ioarcb = &ipr_cmd->ioarcb;
6097 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6098 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6099 ioarcb->write_ioadl_addr =
6100 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6101 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6102 ioarcb->ioasa_host_pci_addr =
6103 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6104 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6105 ipr_cmd->cmd_index = i;
6106 ipr_cmd->ioa_cfg = ioa_cfg;
6107 ipr_cmd->sense_buffer_dma = dma_addr +
6108 offsetof(struct ipr_cmnd, sense_buffer);
6109
6110 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6111 }
6112
6113 return 0;
6114}
6115
6116/**
6117 * ipr_alloc_mem - Allocate memory for an adapter
6118 * @ioa_cfg: ioa config struct
6119 *
6120 * Return value:
6121 * 0 on success / non-zero for error
6122 **/
6123static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6124{
6125 struct pci_dev *pdev = ioa_cfg->pdev;
6126 int i, rc = -ENOMEM;
6127
6128 ENTER;
0bc42e35 6129 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 6130 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
6131
6132 if (!ioa_cfg->res_entries)
6133 goto out;
6134
1da177e4
LT		 6135 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
6136 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
6137
6138 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
6139 sizeof(struct ipr_misc_cbs),
6140 &ioa_cfg->vpd_cbs_dma);
6141
6142 if (!ioa_cfg->vpd_cbs)
6143 goto out_free_res_entries;
6144
6145 if (ipr_alloc_cmd_blks(ioa_cfg))
6146 goto out_free_vpd_cbs;
6147
6148 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
6149 sizeof(u32) * IPR_NUM_CMD_BLKS,
6150 &ioa_cfg->host_rrq_dma);
6151
6152 if (!ioa_cfg->host_rrq)
6153 goto out_ipr_free_cmd_blocks;
6154
6155 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
6156 sizeof(struct ipr_config_table),
6157 &ioa_cfg->cfg_table_dma);
6158
6159 if (!ioa_cfg->cfg_table)
6160 goto out_free_host_rrq;
6161
6162 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6163 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
6164 sizeof(struct ipr_hostrcb),
6165 &ioa_cfg->hostrcb_dma[i]);
6166
6167 if (!ioa_cfg->hostrcb[i])
6168 goto out_free_hostrcb_dma;
6169
6170 ioa_cfg->hostrcb[i]->hostrcb_dma =
6171 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
6172 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
6173 }
6174
0bc42e35 6175 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 6176 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
6177
6178 if (!ioa_cfg->trace)
6179 goto out_free_hostrcb_dma;
6180
1da177e4
LT		 6181 rc = 0;
6182out:
6183 LEAVE;
6184 return rc;
6185
6186out_free_hostrcb_dma:
6187 while (i-- > 0) {
6188 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
6189 ioa_cfg->hostrcb[i],
6190 ioa_cfg->hostrcb_dma[i]);
6191 }
6192 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
6193 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
6194out_free_host_rrq:
6195 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6196 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6197out_ipr_free_cmd_blocks:
6198 ipr_free_cmd_blks(ioa_cfg);
6199out_free_vpd_cbs:
6200 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
6201 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6202out_free_res_entries:
6203 kfree(ioa_cfg->res_entries);
6204 goto out;
6205}
6206
6207/**
6208 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
6209 * @ioa_cfg: ioa config struct
6210 *
6211 * Return value:
6212 * none
6213 **/
6214static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
6215{
6216 int i;
6217
6218 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6219 ioa_cfg->bus_attr[i].bus = i;
6220 ioa_cfg->bus_attr[i].qas_enabled = 0;
6221 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
6222 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
6223 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
6224 else
6225 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
6226 }
6227}
6228
6229/**
6230 * ipr_init_ioa_cfg - Initialize IOA config struct
6231 * @ioa_cfg: ioa config struct
6232 * @host: scsi host struct
6233 * @pdev: PCI dev struct
6234 *
6235 * Return value:
6236 * none
6237 **/
6238static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
6239 struct Scsi_Host *host, struct pci_dev *pdev)
6240{
6241 const struct ipr_interrupt_offsets *p;
6242 struct ipr_interrupts *t;
6243 void __iomem *base;
6244
6245 ioa_cfg->host = host;
6246 ioa_cfg->pdev = pdev;
6247 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 6248 ioa_cfg->doorbell = IPR_DOORBELL;
32d29776
BK		 6249 if (!ipr_auto_create)
6250 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 6251 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
6252 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
6253 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
6254 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
6255 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
6256 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
6257 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
6258 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
6259
6260 INIT_LIST_HEAD(&ioa_cfg->free_q);
6261 INIT_LIST_HEAD(&ioa_cfg->pending_q);
6262 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
6263 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
6264 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
6265 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
6266 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
6267 init_waitqueue_head(&ioa_cfg->reset_wait_q);
6268 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 6269 if (ipr_enable_cache)
6270 ioa_cfg->cache_state = CACHE_ENABLED;
6271 else
6272 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 6273
6274 ipr_initialize_bus_attr(ioa_cfg);
6275
6276 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
6277 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
6278 host->max_channel = IPR_MAX_BUS_TO_SCAN;
6279 host->unique_id = host->host_no;
6280 host->max_cmd_len = IPR_MAX_CDB_LEN;
6281 pci_set_drvdata(pdev, ioa_cfg);
6282
6283 p = &ioa_cfg->chip_cfg->regs;
6284 t = &ioa_cfg->regs;
6285 base = ioa_cfg->hdw_dma_regs;
6286
6287 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
6288 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
6289 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
6290 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
6291 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
6292 t->ioarrin_reg = base + p->ioarrin_reg;
6293 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
6294 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
6295 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
6296}
6297
6298/**
6299 * ipr_get_chip_cfg - Find adapter chip configuration
6300 * @dev_id: PCI device id struct
6301 *
6302 * Return value:
6303 * ptr to chip config on success / NULL on failure
6304 **/
6305static const struct ipr_chip_cfg_t * __devinit
6306ipr_get_chip_cfg(const struct pci_device_id *dev_id)
6307{
6308 int i;
6309
6310 if (dev_id->driver_data)
6311 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
6312
6313 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
6314 if (ipr_chip[i].vendor == dev_id->vendor &&
6315 ipr_chip[i].device == dev_id->device)
6316 return ipr_chip[i].cfg;
6317 return NULL;
6318}
6319
6320/**
6321 * ipr_probe_ioa - Allocates memory and does first stage of initialization
6322 * @pdev: PCI device struct
6323 * @dev_id: PCI device id struct
6324 *
6325 * Return value:
6326 * 0 on success / non-zero on failure
6327 **/
6328static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
6329 const struct pci_device_id *dev_id)
6330{
6331 struct ipr_ioa_cfg *ioa_cfg;
6332 struct Scsi_Host *host;
6333 unsigned long ipr_regs_pci;
6334 void __iomem *ipr_regs;
6335 u32 rc = PCIBIOS_SUCCESSFUL;
ce155cce 6336 volatile u32 mask, uproc;
1da177e4
LT		 6337
6338 ENTER;
6339
6340 if ((rc = pci_enable_device(pdev))) {
6341 dev_err(&pdev->dev, "Cannot enable adapter\n");
6342 goto out;
6343 }
6344
6345 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
6346
6347 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
6348
6349 if (!host) {
6350 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
6351 rc = -ENOMEM;
6352 goto out_disable;
6353 }
6354
6355 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
6356 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
6357
6358 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
6359
6360 if (!ioa_cfg->chip_cfg) {
6361 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
6362 dev_id->vendor, dev_id->device);
6363 goto out_scsi_host_put;
6364 }
6365
6366 ipr_regs_pci = pci_resource_start(pdev, 0);
6367
6368 rc = pci_request_regions(pdev, IPR_NAME);
6369 if (rc < 0) {
6370 dev_err(&pdev->dev,
6371 "Couldn't register memory range of registers\n");
6372 goto out_scsi_host_put;
6373 }
6374
6375 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
6376
6377 if (!ipr_regs) {
6378 dev_err(&pdev->dev,
6379 "Couldn't map memory range of registers\n");
6380 rc = -ENOMEM;
6381 goto out_release_regions;
6382 }
6383
6384 ioa_cfg->hdw_dma_regs = ipr_regs;
6385 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
6386 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
6387
6388 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
6389
6390 pci_set_master(pdev);
6391
6392 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6393 if (rc < 0) {
6394 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
6395 goto cleanup_nomem;
6396 }
6397
6398 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
6399 ioa_cfg->chip_cfg->cache_line_size);
6400
6401 if (rc != PCIBIOS_SUCCESSFUL) {
6402 dev_err(&pdev->dev, "Write of cache line size failed\n");
6403 rc = -EIO;
6404 goto cleanup_nomem;
6405 }
6406
6407 /* Save away PCI config space for use following IOA reset */
6408 rc = pci_save_state(pdev);
6409
6410 if (rc != PCIBIOS_SUCCESSFUL) {
6411 dev_err(&pdev->dev, "Failed to save PCI config space\n");
6412 rc = -EIO;
6413 goto cleanup_nomem;
6414 }
6415
6416 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
6417 goto cleanup_nomem;
6418
6419 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
6420 goto cleanup_nomem;
6421
6422 rc = ipr_alloc_mem(ioa_cfg);
6423 if (rc < 0) {
6424 dev_err(&pdev->dev,
6425 "Couldn't allocate enough memory for device driver!\n");
6426 goto cleanup_nomem;
6427 }
6428
ce155cce
BK		 6429 /*
6430 * If HRRQ updated interrupt is not masked, or reset alert is set,
6431 * the card is in an unknown state and needs a hard reset
6432 */
6433 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6434 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
6435 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
6436 ioa_cfg->needs_hard_reset = 1;
6437
1da177e4
LT		 6438 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
6439 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
6440
6441 if (rc) {
6442 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
6443 pdev->irq, rc);
6444 goto cleanup_nolog;
6445 }
6446
6447 spin_lock(&ipr_driver_lock);
6448 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
6449 spin_unlock(&ipr_driver_lock);
6450
6451 LEAVE;
6452out:
6453 return rc;
6454
6455cleanup_nolog:
6456 ipr_free_mem(ioa_cfg);
6457cleanup_nomem:
6458 iounmap(ipr_regs);
6459out_release_regions:
6460 pci_release_regions(pdev);
6461out_scsi_host_put:
6462 scsi_host_put(host);
6463out_disable:
6464 pci_disable_device(pdev);
6465 goto out;
6466}
6467
6468/**
6469 * ipr_scan_vsets - Scans for VSET devices
6470 * @ioa_cfg: ioa config struct
6471 *
6472 * Description: Since the VSET resources do not follow SAM in that we can have
6473 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
6474 *
6475 * Return value:
6476 * none
6477 **/
6478static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
6479{
6480 int target, lun;
6481
6482 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
6483 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
6484 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
6485}
6486
6487/**
6488 * ipr_initiate_ioa_bringdown - Bring down an adapter
6489 * @ioa_cfg: ioa config struct
6490 * @shutdown_type: shutdown type
6491 *
6492 * Description: This function will initiate bringing down the adapter.
6493 * This consists of issuing an IOA shutdown to the adapter
6494 * to flush the cache, and running BIST.
6495 * If the caller needs to wait on the completion of the reset,
6496 * the caller must sleep on the reset_wait_q.
6497 *
6498 * Return value:
6499 * none
6500 **/
6501static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
6502 enum ipr_shutdown_type shutdown_type)
6503{
6504 ENTER;
6505 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6506 ioa_cfg->sdt_state = ABORT_DUMP;
6507 ioa_cfg->reset_retries = 0;
6508 ioa_cfg->in_ioa_bringdown = 1;
6509 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
6510 LEAVE;
6511}
6512
6513/**
6514 * __ipr_remove - Remove a single adapter
6515 * @pdev: pci device struct
6516 *
6517 * Adapter hot plug remove entry point.
6518 *
6519 * Return value:
6520 * none
6521 **/
6522static void __ipr_remove(struct pci_dev *pdev)
6523{
6524 unsigned long host_lock_flags = 0;
6525 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6526 ENTER;
6527
6528 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6529 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6530
6531 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6532 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 6533 flush_scheduled_work();
1da177e4
LT		 6534 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6535
6536 spin_lock(&ipr_driver_lock);
6537 list_del(&ioa_cfg->queue);
6538 spin_unlock(&ipr_driver_lock);
6539
6540 if (ioa_cfg->sdt_state == ABORT_DUMP)
6541 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6542 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6543
6544 ipr_free_all_resources(ioa_cfg);
6545
6546 LEAVE;
6547}
6548
6549/**
6550 * ipr_remove - IOA hot plug remove entry point
6551 * @pdev: pci device struct
6552 *
6553 * Adapter hot plug remove entry point.
6554 *
6555 * Return value:
6556 * none
6557 **/
6558static void ipr_remove(struct pci_dev *pdev)
6559{
6560 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6561
6562 ENTER;
6563
1da177e4
LT		 6564 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6565 &ipr_trace_attr);
6566 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6567 &ipr_dump_attr);
6568 scsi_remove_host(ioa_cfg->host);
6569
6570 __ipr_remove(pdev);
6571
6572 LEAVE;
6573}
6574
6575/**
6576 * ipr_probe - Adapter hot plug add entry point
6577 *
6578 * Return value:
6579 * 0 on success / non-zero on failure
6580 **/
6581static int __devinit ipr_probe(struct pci_dev *pdev,
6582 const struct pci_device_id *dev_id)
6583{
6584 struct ipr_ioa_cfg *ioa_cfg;
6585 int rc;
6586
6587 rc = ipr_probe_ioa(pdev, dev_id);
6588
6589 if (rc)
6590 return rc;
6591
6592 ioa_cfg = pci_get_drvdata(pdev);
6593 rc = ipr_probe_ioa_part2(ioa_cfg);
6594
6595 if (rc) {
6596 __ipr_remove(pdev);
6597 return rc;
6598 }
6599
6600 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
6601
6602 if (rc) {
6603 __ipr_remove(pdev);
6604 return rc;
6605 }
6606
6607 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6608 &ipr_trace_attr);
6609
6610 if (rc) {
6611 scsi_remove_host(ioa_cfg->host);
6612 __ipr_remove(pdev);
6613 return rc;
6614 }
6615
6616 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6617 &ipr_dump_attr);
6618
6619 if (rc) {
6620 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6621 &ipr_trace_attr);
6622 scsi_remove_host(ioa_cfg->host);
6623 __ipr_remove(pdev);
6624 return rc;
6625 }
6626
6627 scsi_scan_host(ioa_cfg->host);
6628 ipr_scan_vsets(ioa_cfg);
6629 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
6630 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 6631 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 6632 schedule_work(&ioa_cfg->work_q);
6633 return 0;
6634}
6635
6636/**
6637 * ipr_shutdown - Shutdown handler.
d18c3db5 6638 * @pdev: pci device struct
1da177e4
LT		 6639 *
6640 * This function is invoked upon system shutdown/reboot. It will issue
6641 * an adapter shutdown to the adapter to flush the write cache.
6642 *
6643 * Return value:
6644 * none
6645 **/
d18c3db5 6646static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 6647{
d18c3db5 6648 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 6649 unsigned long lock_flags = 0;
6650
6651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6652 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6653 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6654 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6655}
6656
6657static struct pci_device_id ipr_pci_table[] __devinitdata = {
6658 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6659 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6660 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6661 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6662 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6663 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6664 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6665 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6666 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6667 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6668 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6669 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6670 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6671 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6672 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6673 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6674 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6675 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6676 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6677 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6678 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
86f51436
BK		 6679 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6680 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B,
6681 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6682 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6683 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
6684 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6685 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6686 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
6687 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6688 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
6690 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6691 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6692 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
6693 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
1da177e4
LT		 6694 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6695 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6696 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6697 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6698 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6699 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
86f51436
BK		 6700 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F,
6702 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
1da177e4
LT		 6703 { }
6704};
6705MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6706
f8a88b19
LV		 6707static struct pci_error_handlers ipr_err_handler = {
6708 .error_detected = ipr_pci_error_detected,
6709 .slot_reset = ipr_pci_slot_reset,
6710};
6711
1da177e4
LT		 6712static struct pci_driver ipr_driver = {
6713 .name = IPR_NAME,
6714 .id_table = ipr_pci_table,
6715 .probe = ipr_probe,
6716 .remove = ipr_remove,
d18c3db5 6717 .shutdown = ipr_shutdown,
f8a88b19 6718 .err_handler = &ipr_err_handler,
1da177e4
LT		 6719};
6720
6721/**
6722 * ipr_init - Module entry point
6723 *
6724 * Return value:
6725 * 0 on success / negative value on failure
6726 **/
6727static int __init ipr_init(void)
6728{
6729 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6730 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6731
6732 return pci_module_init(&ipr_driver);
6733}
6734
6735/**
6736 * ipr_exit - Module unload
6737 *
6738 * Module unload entry point.
6739 *
6740 * Return value:
6741 * none
6742 **/
6743static void __exit ipr_exit(void)
6744{
6745 pci_unregister_driver(&ipr_driver);
6746}
6747
6748module_init(ipr_init);
6749module_exit(ipr_exit);
ubuntu-zesty-kernel mirror