projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
libata-link: linkify EH action helpers
[linux-2.6-block.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
1da177e4
LT		 57#include <linux/fs.h>
58#include <linux/init.h>
59#include <linux/types.h>
60#include <linux/errno.h>
61#include <linux/kernel.h>
62#include <linux/ioport.h>
63#include <linux/delay.h>
64#include <linux/pci.h>
65#include <linux/wait.h>
66#include <linux/spinlock.h>
67#include <linux/sched.h>
68#include <linux/interrupt.h>
69#include <linux/blkdev.h>
70#include <linux/firmware.h>
71#include <linux/module.h>
72#include <linux/moduleparam.h>
35a39691 73#include <linux/libata.h>
1da177e4
LT		 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>
1da177e4
LT		 82#include "ipr.h"
83
84/*
85 * Global Data
86 */
87static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89static unsigned int ipr_max_speed = 1;
90static int ipr_testmode = 0;
91static unsigned int ipr_fastfail = 0;
5469cb5b 92static unsigned int ipr_transop_timeout = 0;
62275040 93static unsigned int ipr_enable_cache = 1;
d3c74871 94static unsigned int ipr_debug = 0;
ac09c349 95static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 96static DEFINE_SPINLOCK(ipr_driver_lock);
97
98/* This table describes the differences between DMA controller chips */
99static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130};
131
132static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436 135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
60e7486b 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &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 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 160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 162module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
163MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
1da177e4
LT		 164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
1da177e4
LT		 167/* A constant array of IOASCs/URCs/Error Messages */
168static const
169struct ipr_error_table_t ipr_error_table[] = {
933916f3 170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 171 "8155: An unknown error was received"},
172 {0x00330000, 0, 0,
173 "Soft underlength error"},
174 {0x005A0000, 0, 0,
175 "Command to be cancelled not found"},
176 {0x00808000, 0, 0,
177 "Qualified success"},
933916f3 178 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 179 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 181 "4101: Soft device bus fabric error"},
933916f3 182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 183 "FFF9: Device sector reassign successful"},
933916f3 184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 185 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 187 "7001: IOA sector reassignment successful"},
933916f3 188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 189 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 191 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 193 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 195 "FFF6: Device hardware error recovered by the IOA"},
933916f3 196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 197 "FFF6: Device hardware error recovered by the device"},
933916f3 198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 199 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 201 "FFFA: Undefined device response recovered by the IOA"},
933916f3 202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 203 "FFF6: Device bus error, message or command phase"},
933916f3 204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 205 "FFFE: Task Management Function failed"},
933916f3 206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 207 "FFF6: Failure prediction threshold exceeded"},
933916f3 208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
65f56475
BK		 212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
213 "9070: IOA requested reset"},
1da177e4
LT		 214 {0x023F0000, 0, 0,
215 "Synchronization required"},
216 {0x024E0000, 0, 0,
217 "No ready, IOA shutdown"},
218 {0x025A0000, 0, 0,
219 "Not ready, IOA has been shutdown"},
933916f3 220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 221 "3020: Storage subsystem configuration error"},
222 {0x03110B00, 0, 0,
223 "FFF5: Medium error, data unreadable, recommend reassign"},
224 {0x03110C00, 0, 0,
225 "7000: Medium error, data unreadable, do not reassign"},
933916f3 226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 227 "FFF3: Disk media format bad"},
933916f3 228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 229 "3002: Addressed device failed to respond to selection"},
933916f3 230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 231 "3100: Device bus error"},
933916f3 232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 233 "3109: IOA timed out a device command"},
234 {0x04088000, 0, 0,
235 "3120: SCSI bus is not operational"},
933916f3 236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 237 "4100: Hard device bus fabric error"},
933916f3 238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 239 "9000: IOA reserved area data check"},
933916f3 240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 241 "9001: IOA reserved area invalid data pattern"},
933916f3 242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 243 "9002: IOA reserved area LRC error"},
933916f3 244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 245 "102E: Out of alternate sectors for disk storage"},
933916f3 246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 247 "FFF4: Data transfer underlength error"},
933916f3 248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 249 "FFF4: Data transfer overlength error"},
933916f3 250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 251 "3400: Logical unit failure"},
933916f3 252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 253 "FFF4: Device microcode is corrupt"},
933916f3 254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 255 "8150: PCI bus error"},
256 {0x04430000, 1, 0,
257 "Unsupported device bus message received"},
933916f3 258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 259 "FFF4: Disk device problem"},
933916f3 260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 261 "8150: Permanent IOA failure"},
933916f3 262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 263 "3010: Disk device returned wrong response to IOA"},
933916f3 264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 265 "8151: IOA microcode error"},
266 {0x04448500, 0, 0,
267 "Device bus status error"},
933916f3 268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 269 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 270 {0x04448700, 0, 0,
271 "ATA device status error"},
1da177e4
LT		 272 {0x04490000, 0, 0,
273 "Message reject received from the device"},
933916f3 274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 275 "8008: A permanent cache battery pack failure occurred"},
933916f3 276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 277 "9090: Disk unit has been modified after the last known status"},
933916f3 278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 279 "9081: IOA detected device error"},
933916f3 280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 281 "9082: IOA detected device error"},
933916f3 282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 283 "3110: Device bus error, message or command phase"},
933916f3 284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 285 "3110: SAS Command / Task Management Function failed"},
933916f3 286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 287 "9091: Incorrect hardware configuration change has been detected"},
933916f3 288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 289 "9073: Invalid multi-adapter configuration"},
933916f3 290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 291 "4010: Incorrect connection between cascaded expanders"},
933916f3 292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 293 "4020: Connections exceed IOA design limits"},
933916f3 294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 295 "4030: Incorrect multipath connection"},
933916f3 296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 297 "4110: Unsupported enclosure function"},
933916f3 298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 299 "FFF4: Command to logical unit failed"},
300 {0x05240000, 1, 0,
301 "Illegal request, invalid request type or request packet"},
302 {0x05250000, 0, 0,
303 "Illegal request, invalid resource handle"},
b0df54bb 304 {0x05258000, 0, 0,
305 "Illegal request, commands not allowed to this device"},
306 {0x05258100, 0, 0,
307 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 308 {0x05260000, 0, 0,
309 "Illegal request, invalid field in parameter list"},
310 {0x05260100, 0, 0,
311 "Illegal request, parameter not supported"},
312 {0x05260200, 0, 0,
313 "Illegal request, parameter value invalid"},
314 {0x052C0000, 0, 0,
315 "Illegal request, command sequence error"},
b0df54bb 316 {0x052C8000, 1, 0,
317 "Illegal request, dual adapter support not enabled"},
933916f3 318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 319 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 321 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 323 "3140: Device bus not ready to ready transition"},
933916f3 324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 325 "FFFB: SCSI bus was reset"},
326 {0x06290500, 0, 0,
327 "FFFE: SCSI bus transition to single ended"},
328 {0x06290600, 0, 0,
329 "FFFE: SCSI bus transition to LVD"},
933916f3 330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 331 "FFFB: SCSI bus was reset by another initiator"},
933916f3 332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 333 "3029: A device replacement has occurred"},
933916f3 334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 335 "9051: IOA cache data exists for a missing or failed device"},
933916f3 336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 339 "9025: Disk unit is not supported at its physical location"},
933916f3 340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 341 "3020: IOA detected a SCSI bus configuration error"},
933916f3 342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 343 "3150: SCSI bus configuration error"},
933916f3 344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 345 "9074: Asymmetric advanced function disk configuration"},
933916f3 346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 347 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 349 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 351 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 353 "9076: Configuration error, missing remote IOA"},
933916f3 354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 355 "4050: Enclosure does not support a required multipath function"},
933916f3 356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 357 "9041: Array protection temporarily suspended"},
933916f3 358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 359 "9042: Corrupt array parity detected on specified device"},
933916f3 360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 361 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 363 "9071: Link operational transition"},
933916f3 364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 365 "9072: Link not operational transition"},
933916f3 366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 367 "9032: Array exposed but still protected"},
e435340c
BK		 368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
369 "70DD: Device forced failed by disrupt device command"},
933916f3 370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 371 "4061: Multipath redundancy level got better"},
933916f3 372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 373 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 374 {0x07270000, 0, 0,
375 "Failure due to other device"},
933916f3 376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 377 "9008: IOA does not support functions expected by devices"},
933916f3 378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 379 "9010: Cache data associated with attached devices cannot be found"},
933916f3 380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 381 "9011: Cache data belongs to devices other than those attached"},
933916f3 382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 383 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 385 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 387 "9022: Exposed array is missing a required device"},
933916f3 388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 389 "9023: Array member(s) not at required physical locations"},
933916f3 390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 391 "9024: Array not functional due to present hardware configuration"},
933916f3 392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 393 "9026: Array not functional due to present hardware configuration"},
933916f3 394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 395 "9027: Array is missing a device and parity is out of sync"},
933916f3 396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 397 "9028: Maximum number of arrays already exist"},
933916f3 398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 399 "9050: Required cache data cannot be located for a disk unit"},
933916f3 400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 401 "9052: Cache data exists for a device that has been modified"},
933916f3 402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 403 "9054: IOA resources not available due to previous problems"},
933916f3 404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 405 "9092: Disk unit requires initialization before use"},
933916f3 406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 407 "9029: Incorrect hardware configuration change has been detected"},
933916f3 408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 409 "9060: One or more disk pairs are missing from an array"},
933916f3 410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 411 "9061: One or more disks are missing from an array"},
933916f3 412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 413 "9062: One or more disks are missing from an array"},
933916f3 414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 415 "9063: Maximum number of functional arrays has been exceeded"},
416 {0x0B260000, 0, 0,
417 "Aborted command, invalid descriptor"},
418 {0x0B5A0000, 0, 0,
419 "Command terminated by host"}
420};
421
422static const struct ipr_ses_table_entry ipr_ses_table[] = {
423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
436};
437
438/*
439 * Function Prototypes
440 */
441static int ipr_reset_alert(struct ipr_cmnd *);
442static void ipr_process_ccn(struct ipr_cmnd *);
443static void ipr_process_error(struct ipr_cmnd *);
444static void ipr_reset_ioa_job(struct ipr_cmnd *);
445static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
446 enum ipr_shutdown_type);
447
448#ifdef CONFIG_SCSI_IPR_TRACE
449/**
450 * ipr_trc_hook - Add a trace entry to the driver trace
451 * @ipr_cmd: ipr command struct
452 * @type: trace type
453 * @add_data: additional data
454 *
455 * Return value:
456 * none
457 **/
458static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
459 u8 type, u32 add_data)
460{
461 struct ipr_trace_entry *trace_entry;
462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
463
464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
465 trace_entry->time = jiffies;
466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
467 trace_entry->type = type;
35a39691
BK		 468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
471 trace_entry->u.add_data = add_data;
472}
473#else
474#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
475#endif
476
477/**
478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
479 * @ipr_cmd: ipr command struct
480 *
481 * Return value:
482 * none
483 **/
484static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
485{
486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
51b1c7e1 488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 489
490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
491 ioarcb->write_data_transfer_length = 0;
492 ioarcb->read_data_transfer_length = 0;
493 ioarcb->write_ioadl_len = 0;
494 ioarcb->read_ioadl_len = 0;
51b1c7e1
BK		 495 ioarcb->write_ioadl_addr =
496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 498 ioasa->ioasc = 0;
499 ioasa->residual_data_len = 0;
35a39691 500 ioasa->u.gata.status = 0;
1da177e4
LT		 501
502 ipr_cmd->scsi_cmd = NULL;
35a39691 503 ipr_cmd->qc = NULL;
1da177e4
LT		 504 ipr_cmd->sense_buffer[0] = 0;
505 ipr_cmd->dma_use_sg = 0;
506}
507
508/**
509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
510 * @ipr_cmd: ipr command struct
511 *
512 * Return value:
513 * none
514 **/
515static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
516{
517 ipr_reinit_ipr_cmnd(ipr_cmd);
518 ipr_cmd->u.scratch = 0;
519 ipr_cmd->sibling = NULL;
520 init_timer(&ipr_cmd->timer);
521}
522
523/**
524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
525 * @ioa_cfg: ioa config struct
526 *
527 * Return value:
528 * pointer to ipr command struct
529 **/
530static
531struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
532{
533 struct ipr_cmnd *ipr_cmd;
534
535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
536 list_del(&ipr_cmd->queue);
537 ipr_init_ipr_cmnd(ipr_cmd);
538
539 return ipr_cmd;
540}
541
1da177e4
LT		 542/**
543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
544 * @ioa_cfg: ioa config struct
545 * @clr_ints: interrupts to clear
546 *
547 * This function masks all interrupts on the adapter, then clears the
548 * interrupts specified in the mask
549 *
550 * Return value:
551 * none
552 **/
553static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
554 u32 clr_ints)
555{
556 volatile u32 int_reg;
557
558 /* Stop new interrupts */
559 ioa_cfg->allow_interrupts = 0;
560
561 /* Set interrupt mask to stop all new interrupts */
562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
563
564 /* Clear any pending interrupts */
565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
567}
568
569/**
570 * ipr_save_pcix_cmd_reg - Save PCI-X command register
571 * @ioa_cfg: ioa config struct
572 *
573 * Return value:
574 * 0 on success / -EIO on failure
575 **/
576static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
577{
578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
579
7dce0e1c
BK		 580 if (pcix_cmd_reg == 0)
581 return 0;
1da177e4
LT		 582
583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
590 return 0;
591}
592
593/**
594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
595 * @ioa_cfg: ioa config struct
596 *
597 * Return value:
598 * 0 on success / -EIO on failure
599 **/
600static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
601{
602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
603
604 if (pcix_cmd_reg) {
605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
608 return -EIO;
609 }
1da177e4
LT		 610 }
611
612 return 0;
613}
614
35a39691
BK		 615/**
616 * ipr_sata_eh_done - done function for aborted SATA commands
617 * @ipr_cmd: ipr command struct
618 *
619 * This function is invoked for ops generated to SATA
620 * devices which are being aborted.
621 *
622 * Return value:
623 * none
624 **/
625static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
626{
627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
628 struct ata_queued_cmd *qc = ipr_cmd->qc;
629 struct ipr_sata_port *sata_port = qc->ap->private_data;
630
631 qc->err_mask |= AC_ERR_OTHER;
632 sata_port->ioasa.status |= ATA_BUSY;
633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
634 ata_qc_complete(qc);
635}
636
1da177e4
LT		 637/**
638 * ipr_scsi_eh_done - mid-layer done function for aborted ops
639 * @ipr_cmd: ipr command struct
640 *
641 * This function is invoked by the interrupt handler for
642 * ops generated by the SCSI mid-layer which are being aborted.
643 *
644 * Return value:
645 * none
646 **/
647static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
648{
649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
651
652 scsi_cmd->result |= (DID_ERROR << 16);
653
63015bc9 654 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 655 scsi_cmd->scsi_done(scsi_cmd);
656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
657}
658
659/**
660 * ipr_fail_all_ops - Fails all outstanding ops.
661 * @ioa_cfg: ioa config struct
662 *
663 * This function fails all outstanding ops.
664 *
665 * Return value:
666 * none
667 **/
668static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
669{
670 struct ipr_cmnd *ipr_cmd, *temp;
671
672 ENTER;
673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
674 list_del(&ipr_cmd->queue);
675
676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
678
679 if (ipr_cmd->scsi_cmd)
680 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 681 else if (ipr_cmd->qc)
682 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 683
684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
685 del_timer(&ipr_cmd->timer);
686 ipr_cmd->done(ipr_cmd);
687 }
688
689 LEAVE;
690}
691
692/**
693 * ipr_do_req - Send driver initiated requests.
694 * @ipr_cmd: ipr command struct
695 * @done: done function
696 * @timeout_func: timeout function
697 * @timeout: timeout value
698 *
699 * This function sends the specified command to the adapter with the
700 * timeout given. The done function is invoked on command completion.
701 *
702 * Return value:
703 * none
704 **/
705static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
706 void (*done) (struct ipr_cmnd *),
707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
708{
709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
710
711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
712
713 ipr_cmd->done = done;
714
715 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
716 ipr_cmd->timer.expires = jiffies + timeout;
717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
718
719 add_timer(&ipr_cmd->timer);
720
721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
722
723 mb();
724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
725 ioa_cfg->regs.ioarrin_reg);
726}
727
728/**
729 * ipr_internal_cmd_done - Op done function for an internally generated op.
730 * @ipr_cmd: ipr command struct
731 *
732 * This function is the op done function for an internally generated,
733 * blocking op. It simply wakes the sleeping thread.
734 *
735 * Return value:
736 * none
737 **/
738static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
739{
740 if (ipr_cmd->sibling)
741 ipr_cmd->sibling = NULL;
742 else
743 complete(&ipr_cmd->completion);
744}
745
746/**
747 * ipr_send_blocking_cmd - Send command and sleep on its completion.
748 * @ipr_cmd: ipr command struct
749 * @timeout_func: function to invoke if command times out
750 * @timeout: timeout
751 *
752 * Return value:
753 * none
754 **/
755static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
757 u32 timeout)
758{
759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
760
761 init_completion(&ipr_cmd->completion);
762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
763
764 spin_unlock_irq(ioa_cfg->host->host_lock);
765 wait_for_completion(&ipr_cmd->completion);
766 spin_lock_irq(ioa_cfg->host->host_lock);
767}
768
769/**
770 * ipr_send_hcam - Send an HCAM to the adapter.
771 * @ioa_cfg: ioa config struct
772 * @type: HCAM type
773 * @hostrcb: hostrcb struct
774 *
775 * This function will send a Host Controlled Async command to the adapter.
776 * If HCAMs are currently not allowed to be issued to the adapter, it will
777 * place the hostrcb on the free queue.
778 *
779 * Return value:
780 * none
781 **/
782static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
783 struct ipr_hostrcb *hostrcb)
784{
785 struct ipr_cmnd *ipr_cmd;
786 struct ipr_ioarcb *ioarcb;
787
788 if (ioa_cfg->allow_cmds) {
789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
792
793 ipr_cmd->u.hostrcb = hostrcb;
794 ioarcb = &ipr_cmd->ioarcb;
795
796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
799 ioarcb->cmd_pkt.cdb[1] = type;
800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
802
803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
805 ipr_cmd->ioadl[0].flags_and_data_len =
806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
808
809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
810 ipr_cmd->done = ipr_process_ccn;
811 else
812 ipr_cmd->done = ipr_process_error;
813
814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
815
816 mb();
817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
818 ioa_cfg->regs.ioarrin_reg);
819 } else {
820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
821 }
822}
823
824/**
825 * ipr_init_res_entry - Initialize a resource entry struct.
826 * @res: resource entry struct
827 *
828 * Return value:
829 * none
830 **/
831static void ipr_init_res_entry(struct ipr_resource_entry *res)
832{
ee0a90fa 833 res->needs_sync_complete = 0;
1da177e4
LT		 834 res->in_erp = 0;
835 res->add_to_ml = 0;
836 res->del_from_ml = 0;
837 res->resetting_device = 0;
838 res->sdev = NULL;
35a39691 839 res->sata_port = NULL;
1da177e4
LT		 840}
841
842/**
843 * ipr_handle_config_change - Handle a config change from the adapter
844 * @ioa_cfg: ioa config struct
845 * @hostrcb: hostrcb
846 *
847 * Return value:
848 * none
849 **/
850static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
851 struct ipr_hostrcb *hostrcb)
852{
853 struct ipr_resource_entry *res = NULL;
854 struct ipr_config_table_entry *cfgte;
855 u32 is_ndn = 1;
856
857 cfgte = &hostrcb->hcam.u.ccn.cfgte;
858
859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
861 sizeof(cfgte->res_addr))) {
862 is_ndn = 0;
863 break;
864 }
865 }
866
867 if (is_ndn) {
868 if (list_empty(&ioa_cfg->free_res_q)) {
869 ipr_send_hcam(ioa_cfg,
870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
871 hostrcb);
872 return;
873 }
874
875 res = list_entry(ioa_cfg->free_res_q.next,
876 struct ipr_resource_entry, queue);
877
878 list_del(&res->queue);
879 ipr_init_res_entry(res);
880 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
881 }
882
883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
884
885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
886 if (res->sdev) {
1da177e4 887 res->del_from_ml = 1;
1121b794 888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 889 if (ioa_cfg->allow_ml_add_del)
890 schedule_work(&ioa_cfg->work_q);
891 } else
892 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
893 } else if (!res->sdev) {
894 res->add_to_ml = 1;
895 if (ioa_cfg->allow_ml_add_del)
896 schedule_work(&ioa_cfg->work_q);
897 }
898
899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
900}
901
902/**
903 * ipr_process_ccn - Op done function for a CCN.
904 * @ipr_cmd: ipr command struct
905 *
906 * This function is the op done function for a configuration
907 * change notification host controlled async from the adapter.
908 *
909 * Return value:
910 * none
911 **/
912static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
913{
914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
917
918 list_del(&hostrcb->queue);
919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
920
921 if (ioasc) {
922 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
923 dev_err(&ioa_cfg->pdev->dev,
924 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
925
926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
927 } else {
928 ipr_handle_config_change(ioa_cfg, hostrcb);
929 }
930}
931
8cf093e2
BK		 932/**
933 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
934 * @i: index into buffer
935 * @buf: string to modify
936 *
937 * This function will strip all trailing whitespace, pad the end
938 * of the string with a single space, and NULL terminate the string.
939 *
940 * Return value:
941 * new length of string
942 **/
943static int strip_and_pad_whitespace(int i, char *buf)
944{
945 while (i && buf[i] == ' ')
946 i--;
947 buf[i+1] = ' ';
948 buf[i+2] = '\0';
949 return i + 2;
950}
951
952/**
953 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
954 * @prefix: string to print at start of printk
955 * @hostrcb: hostrcb pointer
956 * @vpd: vendor/product id/sn struct
957 *
958 * Return value:
959 * none
960 **/
961static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
962 struct ipr_vpd *vpd)
963{
964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
965 int i = 0;
966
967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
969
970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
975
976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
977}
978
1da177e4
LT		 979/**
980 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 981 * @vpd: vendor/product id/sn struct
1da177e4
LT		 982 *
983 * Return value:
984 * none
985 **/
cfc32139 986static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 987{
988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
989 + IPR_SERIAL_NUM_LEN];
990
cfc32139 991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 993 IPR_PROD_ID_LEN);
994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
995 ipr_err("Vendor/Product ID: %s\n", buffer);
996
cfc32139 997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 998 buffer[IPR_SERIAL_NUM_LEN] = '\0';
999 ipr_err(" Serial Number: %s\n", buffer);
1000}
1001
8cf093e2
BK		 1002/**
1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1004 * @prefix: string to print at start of printk
1005 * @hostrcb: hostrcb pointer
1006 * @vpd: vendor/product id/sn/wwn struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1012 struct ipr_ext_vpd *vpd)
1013{
1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1017}
1018
ee0f05b8 1019/**
1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1021 * @vpd: vendor/product id/sn/wwn struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1027{
1028 ipr_log_vpd(&vpd->vpd);
1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1030 be32_to_cpu(vpd->wwid[1]));
1031}
1032
1033/**
1034 * ipr_log_enhanced_cache_error - Log a cache error.
1035 * @ioa_cfg: ioa config struct
1036 * @hostrcb: hostrcb struct
1037 *
1038 * Return value:
1039 * none
1040 **/
1041static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1042 struct ipr_hostrcb *hostrcb)
1043{
1044 struct ipr_hostrcb_type_12_error *error =
1045 &hostrcb->hcam.u.error.u.type_12_error;
1046
1047 ipr_err("-----Current Configuration-----\n");
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&error->ioa_vpd);
1050 ipr_err("Adapter Card Information:\n");
1051 ipr_log_ext_vpd(&error->cfc_vpd);
1052
1053 ipr_err("-----Expected Configuration-----\n");
1054 ipr_err("Cache Directory Card Information:\n");
1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1056 ipr_err("Adapter Card Information:\n");
1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1058
1059 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1060 be32_to_cpu(error->ioa_data[0]),
1061 be32_to_cpu(error->ioa_data[1]),
1062 be32_to_cpu(error->ioa_data[2]));
1063}
1064
1da177e4
LT		 1065/**
1066 * ipr_log_cache_error - Log a cache error.
1067 * @ioa_cfg: ioa config struct
1068 * @hostrcb: hostrcb struct
1069 *
1070 * Return value:
1071 * none
1072 **/
1073static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1074 struct ipr_hostrcb *hostrcb)
1075{
1076 struct ipr_hostrcb_type_02_error *error =
1077 &hostrcb->hcam.u.error.u.type_02_error;
1078
1079 ipr_err("-----Current Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
cfc32139 1081 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1082 ipr_err("Adapter Card Information:\n");
cfc32139 1083 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1084
1085 ipr_err("-----Expected Configuration-----\n");
1086 ipr_err("Cache Directory Card Information:\n");
cfc32139 1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1088 ipr_err("Adapter Card Information:\n");
cfc32139 1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1090
1091 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1092 be32_to_cpu(error->ioa_data[0]),
1093 be32_to_cpu(error->ioa_data[1]),
1094 be32_to_cpu(error->ioa_data[2]));
1095}
1096
ee0f05b8 1097/**
1098 * ipr_log_enhanced_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107{
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1110 struct ipr_hostrcb_type_13_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_13_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
1118 dev_entry = error->dev;
1119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1124 ipr_log_ext_vpd(&dev_entry->vpd);
1125
1126 ipr_err("-----New Device Information-----\n");
1127 ipr_log_ext_vpd(&dev_entry->new_vpd);
1128
1129 ipr_err("Cache Directory Card Information:\n");
1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1131
1132 ipr_err("Adapter Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1134 }
1135}
1136
1da177e4
LT		 1137/**
1138 * ipr_log_config_error - Log a configuration error.
1139 * @ioa_cfg: ioa config struct
1140 * @hostrcb: hostrcb struct
1141 *
1142 * Return value:
1143 * none
1144 **/
1145static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1146 struct ipr_hostrcb *hostrcb)
1147{
1148 int errors_logged, i;
1149 struct ipr_hostrcb_device_data_entry *dev_entry;
1150 struct ipr_hostrcb_type_03_error *error;
1151
1152 error = &hostrcb->hcam.u.error.u.type_03_error;
1153 errors_logged = be32_to_cpu(error->errors_logged);
1154
1155 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1156 be32_to_cpu(error->errors_detected), errors_logged);
1157
cfc32139 1158 dev_entry = error->dev;
1da177e4
LT		 1159
1160 for (i = 0; i < errors_logged; i++, dev_entry++) {
1161 ipr_err_separator;
1162
fa15b1f6 1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1164 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1165
1166 ipr_err("-----New Device Information-----\n");
cfc32139 1167 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1168
1169 ipr_err("Cache Directory Card Information:\n");
cfc32139 1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1171
1172 ipr_err("Adapter Card Information:\n");
cfc32139 1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1174
1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1176 be32_to_cpu(dev_entry->ioa_data[0]),
1177 be32_to_cpu(dev_entry->ioa_data[1]),
1178 be32_to_cpu(dev_entry->ioa_data[2]),
1179 be32_to_cpu(dev_entry->ioa_data[3]),
1180 be32_to_cpu(dev_entry->ioa_data[4]));
1181 }
1182}
1183
ee0f05b8 1184/**
1185 * ipr_log_enhanced_array_error - Log an array configuration error.
1186 * @ioa_cfg: ioa config struct
1187 * @hostrcb: hostrcb struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1193 struct ipr_hostrcb *hostrcb)
1194{
1195 int i, num_entries;
1196 struct ipr_hostrcb_type_14_error *error;
1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1199
1200 error = &hostrcb->hcam.u.error.u.type_14_error;
1201
1202 ipr_err_separator;
1203
1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1205 error->protection_level,
1206 ioa_cfg->host->host_no,
1207 error->last_func_vset_res_addr.bus,
1208 error->last_func_vset_res_addr.target,
1209 error->last_func_vset_res_addr.lun);
1210
1211 ipr_err_separator;
1212
1213 array_entry = error->array_member;
1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1215 sizeof(error->array_member));
1216
1217 for (i = 0; i < num_entries; i++, array_entry++) {
1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1219 continue;
1220
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1223 else
1224 ipr_err("Array Member %d:\n", i);
1225
1226 ipr_log_ext_vpd(&array_entry->vpd);
1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1229 "Expected Location");
1230
1231 ipr_err_separator;
1232 }
1233}
1234
1da177e4
LT		 1235/**
1236 * ipr_log_array_error - Log an array configuration error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245{
1246 int i;
1247 struct ipr_hostrcb_type_04_error *error;
1248 struct ipr_hostrcb_array_data_entry *array_entry;
1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1250
1251 error = &hostrcb->hcam.u.error.u.type_04_error;
1252
1253 ipr_err_separator;
1254
1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1256 error->protection_level,
1257 ioa_cfg->host->host_no,
1258 error->last_func_vset_res_addr.bus,
1259 error->last_func_vset_res_addr.target,
1260 error->last_func_vset_res_addr.lun);
1261
1262 ipr_err_separator;
1263
1264 array_entry = error->array_member;
1265
1266 for (i = 0; i < 18; i++) {
cfc32139 1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1268 continue;
1269
fa15b1f6 1270 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1271 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1272 else
1da177e4 1273 ipr_err("Array Member %d:\n", i);
1da177e4 1274
cfc32139 1275 ipr_log_vpd(&array_entry->vpd);
1da177e4 1276
fa15b1f6 1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1279 "Expected Location");
1da177e4
LT		 1280
1281 ipr_err_separator;
1282
1283 if (i == 9)
1284 array_entry = error->array_member2;
1285 else
1286 array_entry++;
1287 }
1288}
1289
1290/**
b0df54bb 1291 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1292 * @ioa_cfg: ioa config struct
b0df54bb 1293 * @data: IOA error data
1294 * @len: data length
1da177e4
LT		 1295 *
1296 * Return value:
1297 * none
1298 **/
ac719aba 1299static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1300{
1301 int i;
1da177e4 1302
b0df54bb 1303 if (len == 0)
1da177e4
LT		 1304 return;
1305
ac719aba
BK		 1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1308
b0df54bb 1309 for (i = 0; i < len / 4; i += 4) {
1da177e4 1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb 1311 be32_to_cpu(data[i]),
1312 be32_to_cpu(data[i+1]),
1313 be32_to_cpu(data[i+2]),
1314 be32_to_cpu(data[i+3]));
1da177e4
LT		 1315 }
1316}
1317
ee0f05b8 1318/**
1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1320 * @ioa_cfg: ioa config struct
1321 * @hostrcb: hostrcb struct
1322 *
1323 * Return value:
1324 * none
1325 **/
1326static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1327 struct ipr_hostrcb *hostrcb)
1328{
1329 struct ipr_hostrcb_type_17_error *error;
1330
1331 error = &hostrcb->hcam.u.error.u.type_17_error;
1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1333 strstrip(error->failure_reason);
ee0f05b8 1334
8cf093e2
BK		 1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1336 be32_to_cpu(hostrcb->hcam.u.error.prc));
1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1338 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8 1339 be32_to_cpu(hostrcb->hcam.length) -
1340 (offsetof(struct ipr_hostrcb_error, u) +
1341 offsetof(struct ipr_hostrcb_type_17_error, data)));
1342}
1343
b0df54bb 1344/**
1345 * ipr_log_dual_ioa_error - Log a dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354{
1355 struct ipr_hostrcb_type_07_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_07_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1359 strstrip(error->failure_reason);
b0df54bb 1360
8cf093e2
BK		 1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1362 be32_to_cpu(hostrcb->hcam.u.error.prc));
1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1364 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb 1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_07_error, data)));
1368}
1369
49dc6a18
BK		 1370static const struct {
1371 u8 active;
1372 char *desc;
1373} path_active_desc[] = {
1374 { IPR_PATH_NO_INFO, "Path" },
1375 { IPR_PATH_ACTIVE, "Active path" },
1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1377};
1378
1379static const struct {
1380 u8 state;
1381 char *desc;
1382} path_state_desc[] = {
1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1384 { IPR_PATH_HEALTHY, "is healthy" },
1385 { IPR_PATH_DEGRADED, "is degraded" },
1386 { IPR_PATH_FAILED, "is failed" }
1387};
1388
1389/**
1390 * ipr_log_fabric_path - Log a fabric path error
1391 * @hostrcb: hostrcb struct
1392 * @fabric: fabric descriptor
1393 *
1394 * Return value:
1395 * none
1396 **/
1397static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1398 struct ipr_hostrcb_fabric_desc *fabric)
1399{
1400 int i, j;
1401 u8 path_state = fabric->path_state;
1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1403 u8 state = path_state & IPR_PATH_STATE_MASK;
1404
1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1406 if (path_active_desc[i].active != active)
1407 continue;
1408
1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1410 if (path_state_desc[j].state != state)
1411 continue;
1412
1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1415 path_active_desc[i].desc, path_state_desc[j].desc,
1416 fabric->ioa_port);
1417 } else if (fabric->cascaded_expander == 0xff) {
1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1419 path_active_desc[i].desc, path_state_desc[j].desc,
1420 fabric->ioa_port, fabric->phy);
1421 } else if (fabric->phy == 0xff) {
1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1423 path_active_desc[i].desc, path_state_desc[j].desc,
1424 fabric->ioa_port, fabric->cascaded_expander);
1425 } else {
1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1427 path_active_desc[i].desc, path_state_desc[j].desc,
1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1429 }
1430 return;
1431 }
1432 }
1433
1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1436}
1437
1438static const struct {
1439 u8 type;
1440 char *desc;
1441} path_type_desc[] = {
1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1446};
1447
1448static const struct {
1449 u8 status;
1450 char *desc;
1451} path_status_desc[] = {
1452 { IPR_PATH_CFG_NO_PROB, "Functional" },
1453 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1454 { IPR_PATH_CFG_FAILED, "Failed" },
1455 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1456 { IPR_PATH_NOT_DETECTED, "Missing" },
1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1458};
1459
1460static const char *link_rate[] = {
1461 "unknown",
1462 "disabled",
1463 "phy reset problem",
1464 "spinup hold",
1465 "port selector",
1466 "unknown",
1467 "unknown",
1468 "unknown",
1469 "1.5Gbps",
1470 "3.0Gbps",
1471 "unknown",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown"
1477};
1478
1479/**
1480 * ipr_log_path_elem - Log a fabric path element.
1481 * @hostrcb: hostrcb struct
1482 * @cfg: fabric path element struct
1483 *
1484 * Return value:
1485 * none
1486 **/
1487static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1488 struct ipr_hostrcb_config_element *cfg)
1489{
1490 int i, j;
1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1493
1494 if (type == IPR_PATH_CFG_NOT_EXIST)
1495 return;
1496
1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1498 if (path_type_desc[i].type != type)
1499 continue;
1500
1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1502 if (path_status_desc[j].status != status)
1503 continue;
1504
1505 if (type == IPR_PATH_CFG_IOA_PORT) {
1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1507 path_status_desc[j].desc, path_type_desc[i].desc,
1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1510 } else {
1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1513 path_status_desc[j].desc, path_type_desc[i].desc,
1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1516 } else if (cfg->cascaded_expander == 0xff) {
1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1518 "WWN=%08X%08X\n", path_status_desc[j].desc,
1519 path_type_desc[i].desc, cfg->phy,
1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1522 } else if (cfg->phy == 0xff) {
1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1524 "WWN=%08X%08X\n", path_status_desc[j].desc,
1525 path_type_desc[i].desc, cfg->cascaded_expander,
1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1528 } else {
1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1530 "WWN=%08X%08X\n", path_status_desc[j].desc,
1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1534 }
1535 }
1536 return;
1537 }
1538 }
1539
1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1544}
1545
1546/**
1547 * ipr_log_fabric_error - Log a fabric error.
1548 * @ioa_cfg: ioa config struct
1549 * @hostrcb: hostrcb struct
1550 *
1551 * Return value:
1552 * none
1553 **/
1554static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1555 struct ipr_hostrcb *hostrcb)
1556{
1557 struct ipr_hostrcb_type_20_error *error;
1558 struct ipr_hostrcb_fabric_desc *fabric;
1559 struct ipr_hostrcb_config_element *cfg;
1560 int i, add_len;
1561
1562 error = &hostrcb->hcam.u.error.u.type_20_error;
1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1565
1566 add_len = be32_to_cpu(hostrcb->hcam.length) -
1567 (offsetof(struct ipr_hostrcb_error, u) +
1568 offsetof(struct ipr_hostrcb_type_20_error, desc));
1569
1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1571 ipr_log_fabric_path(hostrcb, fabric);
1572 for_each_fabric_cfg(fabric, cfg)
1573 ipr_log_path_elem(hostrcb, cfg);
1574
1575 add_len -= be16_to_cpu(fabric->length);
1576 fabric = (struct ipr_hostrcb_fabric_desc *)
1577 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1578 }
1579
ac719aba 1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1581}
1582
b0df54bb 1583/**
1584 * ipr_log_generic_error - Log an adapter error.
1585 * @ioa_cfg: ioa config struct
1586 * @hostrcb: hostrcb struct
1587 *
1588 * Return value:
1589 * none
1590 **/
1591static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1592 struct ipr_hostrcb *hostrcb)
1593{
ac719aba 1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb 1595 be32_to_cpu(hostrcb->hcam.length));
1596}
1597
1da177e4
LT		 1598/**
1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1600 * @ioasc: IOASC
1601 *
1602 * This function will return the index of into the ipr_error_table
1603 * for the specified IOASC. If the IOASC is not in the table,
1604 * 0 will be returned, which points to the entry used for unknown errors.
1605 *
1606 * Return value:
1607 * index into the ipr_error_table
1608 **/
1609static u32 ipr_get_error(u32 ioasc)
1610{
1611 int i;
1612
1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1615 return i;
1616
1617 return 0;
1618}
1619
1620/**
1621 * ipr_handle_log_data - Log an adapter error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * This function logs an adapter error to the system.
1626 *
1627 * Return value:
1628 * none
1629 **/
1630static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1631 struct ipr_hostrcb *hostrcb)
1632{
1633 u32 ioasc;
1634 int error_index;
1635
1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1637 return;
1638
1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1641
1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1643
1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1647 scsi_report_bus_reset(ioa_cfg->host,
1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1649 }
1650
1651 error_index = ipr_get_error(ioasc);
1652
1653 if (!ipr_error_table[error_index].log_hcam)
1654 return;
1655
49dc6a18 1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1657
1658 /* Set indication we have logged an error */
1659 ioa_cfg->errors_logged++;
1660
933916f3 1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1662 return;
cf852037 1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1665
1666 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1667 case IPR_HOST_RCB_OVERLAY_ID_2:
1668 ipr_log_cache_error(ioa_cfg, hostrcb);
1669 break;
1670 case IPR_HOST_RCB_OVERLAY_ID_3:
1671 ipr_log_config_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_4:
1674 case IPR_HOST_RCB_OVERLAY_ID_6:
1675 ipr_log_array_error(ioa_cfg, hostrcb);
1676 break;
b0df54bb 1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
ee0f05b8 1680 case IPR_HOST_RCB_OVERLAY_ID_12:
1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_13:
1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_14:
1687 case IPR_HOST_RCB_OVERLAY_ID_16:
1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1689 break;
1690 case IPR_HOST_RCB_OVERLAY_ID_17:
1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1692 break;
49dc6a18
BK		 1693 case IPR_HOST_RCB_OVERLAY_ID_20:
1694 ipr_log_fabric_error(ioa_cfg, hostrcb);
1695 break;
cf852037 1696 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1698 default:
a9cfca96 1699 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1700 break;
1701 }
1702}
1703
1704/**
1705 * ipr_process_error - Op done function for an adapter error log.
1706 * @ipr_cmd: ipr command struct
1707 *
1708 * This function is the op done function for an error log host
1709 * controlled async from the adapter. It will log the error and
1710 * send the HCAM back to the adapter.
1711 *
1712 * Return value:
1713 * none
1714 **/
1715static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1716{
1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1721
1722 list_del(&hostrcb->queue);
1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1724
1725 if (!ioasc) {
1726 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1730 dev_err(&ioa_cfg->pdev->dev,
1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1732 }
1733
1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1735}
1736
1737/**
1738 * ipr_timeout - An internally generated op has timed out.
1739 * @ipr_cmd: ipr command struct
1740 *
1741 * This function blocks host requests and initiates an
1742 * adapter reset.
1743 *
1744 * Return value:
1745 * none
1746 **/
1747static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1748{
1749 unsigned long lock_flags = 0;
1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1751
1752 ENTER;
1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1754
1755 ioa_cfg->errors_logged++;
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Adapter being reset due to command timeout.\n");
1758
1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1760 ioa_cfg->sdt_state = GET_DUMP;
1761
1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1764
1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1766 LEAVE;
1767}
1768
1769/**
1770 * ipr_oper_timeout - Adapter timed out transitioning to operational
1771 * @ipr_cmd: ipr command struct
1772 *
1773 * This function blocks host requests and initiates an
1774 * adapter reset.
1775 *
1776 * Return value:
1777 * none
1778 **/
1779static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1780{
1781 unsigned long lock_flags = 0;
1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1783
1784 ENTER;
1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1786
1787 ioa_cfg->errors_logged++;
1788 dev_err(&ioa_cfg->pdev->dev,
1789 "Adapter timed out transitioning to operational.\n");
1790
1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1792 ioa_cfg->sdt_state = GET_DUMP;
1793
1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1795 if (ipr_fastfail)
1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1798 }
1799
1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1801 LEAVE;
1802}
1803
1804/**
1805 * ipr_reset_reload - Reset/Reload the IOA
1806 * @ioa_cfg: ioa config struct
1807 * @shutdown_type: shutdown type
1808 *
1809 * This function resets the adapter and re-initializes it.
1810 * This function assumes that all new host commands have been stopped.
1811 * Return value:
1812 * SUCCESS / FAILED
1813 **/
1814static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1815 enum ipr_shutdown_type shutdown_type)
1816{
1817 if (!ioa_cfg->in_reset_reload)
1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1819
1820 spin_unlock_irq(ioa_cfg->host->host_lock);
1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1822 spin_lock_irq(ioa_cfg->host->host_lock);
1823
1824 /* If we got hit with a host reset while we were already resetting
1825 the adapter for some reason, and the reset failed. */
1826 if (ioa_cfg->ioa_is_dead) {
1827 ipr_trace;
1828 return FAILED;
1829 }
1830
1831 return SUCCESS;
1832}
1833
1834/**
1835 * ipr_find_ses_entry - Find matching SES in SES table
1836 * @res: resource entry struct of SES
1837 *
1838 * Return value:
1839 * pointer to SES table entry / NULL on failure
1840 **/
1841static const struct ipr_ses_table_entry *
1842ipr_find_ses_entry(struct ipr_resource_entry *res)
1843{
1844 int i, j, matches;
1845 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1846
1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1849 if (ste->compare_product_id_byte[j] == 'X') {
1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1851 matches++;
1852 else
1853 break;
1854 } else
1855 matches++;
1856 }
1857
1858 if (matches == IPR_PROD_ID_LEN)
1859 return ste;
1860 }
1861
1862 return NULL;
1863}
1864
1865/**
1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1867 * @ioa_cfg: ioa config struct
1868 * @bus: SCSI bus
1869 * @bus_width: bus width
1870 *
1871 * Return value:
1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1874 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1875 * max 160MHz = max 320MB/sec).
1876 **/
1877static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1878{
1879 struct ipr_resource_entry *res;
1880 const struct ipr_ses_table_entry *ste;
1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1882
1883 /* Loop through each config table entry in the config table buffer */
1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1886 continue;
1887
1888 if (bus != res->cfgte.res_addr.bus)
1889 continue;
1890
1891 if (!(ste = ipr_find_ses_entry(res)))
1892 continue;
1893
1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1895 }
1896
1897 return max_xfer_rate;
1898}
1899
1900/**
1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1902 * @ioa_cfg: ioa config struct
1903 * @max_delay: max delay in micro-seconds to wait
1904 *
1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1906 *
1907 * Return value:
1908 * 0 on success / other on failure
1909 **/
1910static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1911{
1912 volatile u32 pcii_reg;
1913 int delay = 1;
1914
1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1916 while (delay < max_delay) {
1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1918
1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1920 return 0;
1921
1922 /* udelay cannot be used if delay is more than a few milliseconds */
1923 if ((delay / 1000) > MAX_UDELAY_MS)
1924 mdelay(delay / 1000);
1925 else
1926 udelay(delay);
1927
1928 delay += delay;
1929 }
1930 return -EIO;
1931}
1932
1933/**
1934 * ipr_get_ldump_data_section - Dump IOA memory
1935 * @ioa_cfg: ioa config struct
1936 * @start_addr: adapter address to dump
1937 * @dest: destination kernel buffer
1938 * @length_in_words: length to dump in 4 byte words
1939 *
1940 * Return value:
1941 * 0 on success / -EIO on failure
1942 **/
1943static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1944 u32 start_addr,
1945 __be32 *dest, u32 length_in_words)
1946{
1947 volatile u32 temp_pcii_reg;
1948 int i, delay = 0;
1949
1950 /* Write IOA interrupt reg starting LDUMP state */
1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1952 ioa_cfg->regs.set_uproc_interrupt_reg);
1953
1954 /* Wait for IO debug acknowledge */
1955 if (ipr_wait_iodbg_ack(ioa_cfg,
1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1957 dev_err(&ioa_cfg->pdev->dev,
1958 "IOA dump long data transfer timeout\n");
1959 return -EIO;
1960 }
1961
1962 /* Signal LDUMP interlocked - clear IO debug ack */
1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1964 ioa_cfg->regs.clr_interrupt_reg);
1965
1966 /* Write Mailbox with starting address */
1967 writel(start_addr, ioa_cfg->ioa_mailbox);
1968
1969 /* Signal address valid - clear IOA Reset alert */
1970 writel(IPR_UPROCI_RESET_ALERT,
1971 ioa_cfg->regs.clr_uproc_interrupt_reg);
1972
1973 for (i = 0; i < length_in_words; i++) {
1974 /* Wait for IO debug acknowledge */
1975 if (ipr_wait_iodbg_ack(ioa_cfg,
1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1977 dev_err(&ioa_cfg->pdev->dev,
1978 "IOA dump short data transfer timeout\n");
1979 return -EIO;
1980 }
1981
1982 /* Read data from mailbox and increment destination pointer */
1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1984 dest++;
1985
1986 /* For all but the last word of data, signal data received */
1987 if (i < (length_in_words - 1)) {
1988 /* Signal dump data received - Clear IO debug Ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991 }
1992 }
1993
1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1995 writel(IPR_UPROCI_RESET_ALERT,
1996 ioa_cfg->regs.set_uproc_interrupt_reg);
1997
1998 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1999 ioa_cfg->regs.clr_uproc_interrupt_reg);
2000
2001 /* Signal dump data received - Clear IO debug Ack */
2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2003 ioa_cfg->regs.clr_interrupt_reg);
2004
2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2007 temp_pcii_reg =
2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2009
2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2011 return 0;
2012
2013 udelay(10);
2014 delay += 10;
2015 }
2016
2017 return 0;
2018}
2019
2020#ifdef CONFIG_SCSI_IPR_DUMP
2021/**
2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2023 * @ioa_cfg: ioa config struct
2024 * @pci_address: adapter address
2025 * @length: length of data to copy
2026 *
2027 * Copy data from PCI adapter to kernel buffer.
2028 * Note: length MUST be a 4 byte multiple
2029 * Return value:
2030 * 0 on success / other on failure
2031 **/
2032static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2033 unsigned long pci_address, u32 length)
2034{
2035 int bytes_copied = 0;
2036 int cur_len, rc, rem_len, rem_page_len;
2037 __be32 *page;
2038 unsigned long lock_flags = 0;
2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2040
2041 while (bytes_copied < length &&
2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2043 if (ioa_dump->page_offset >= PAGE_SIZE ||
2044 ioa_dump->page_offset == 0) {
2045 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2046
2047 if (!page) {
2048 ipr_trace;
2049 return bytes_copied;
2050 }
2051
2052 ioa_dump->page_offset = 0;
2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2054 ioa_dump->next_page_index++;
2055 } else
2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2057
2058 rem_len = length - bytes_copied;
2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2060 cur_len = min(rem_len, rem_page_len);
2061
2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2063 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2064 rc = -EIO;
2065 } else {
2066 rc = ipr_get_ldump_data_section(ioa_cfg,
2067 pci_address + bytes_copied,
2068 &page[ioa_dump->page_offset / 4],
2069 (cur_len / sizeof(u32)));
2070 }
2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2072
2073 if (!rc) {
2074 ioa_dump->page_offset += cur_len;
2075 bytes_copied += cur_len;
2076 } else {
2077 ipr_trace;
2078 break;
2079 }
2080 schedule();
2081 }
2082
2083 return bytes_copied;
2084}
2085
2086/**
2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2088 * @hdr: dump entry header struct
2089 *
2090 * Return value:
2091 * nothing
2092 **/
2093static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2094{
2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2096 hdr->num_elems = 1;
2097 hdr->offset = sizeof(*hdr);
2098 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2099}
2100
2101/**
2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2103 * @ioa_cfg: ioa config struct
2104 * @driver_dump: driver dump struct
2105 *
2106 * Return value:
2107 * nothing
2108 **/
2109static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2110 struct ipr_driver_dump *driver_dump)
2111{
2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2113
2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2115 driver_dump->ioa_type_entry.hdr.len =
2116 sizeof(struct ipr_dump_ioa_type_entry) -
2117 sizeof(struct ipr_dump_entry_header);
2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2120 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2123 ucode_vpd->minor_release[1];
2124 driver_dump->hdr.num_entries++;
2125}
2126
2127/**
2128 * ipr_dump_version_data - Fill in the driver version in the dump.
2129 * @ioa_cfg: ioa config struct
2130 * @driver_dump: driver dump struct
2131 *
2132 * Return value:
2133 * nothing
2134 **/
2135static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137{
2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2139 driver_dump->version_entry.hdr.len =
2140 sizeof(struct ipr_dump_version_entry) -
2141 sizeof(struct ipr_dump_entry_header);
2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2145 driver_dump->hdr.num_entries++;
2146}
2147
2148/**
2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2150 * @ioa_cfg: ioa config struct
2151 * @driver_dump: driver dump struct
2152 *
2153 * Return value:
2154 * nothing
2155 **/
2156static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2157 struct ipr_driver_dump *driver_dump)
2158{
2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2160 driver_dump->trace_entry.hdr.len =
2161 sizeof(struct ipr_dump_trace_entry) -
2162 sizeof(struct ipr_dump_entry_header);
2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2166 driver_dump->hdr.num_entries++;
2167}
2168
2169/**
2170 * ipr_dump_location_data - Fill in the IOA location in the dump.
2171 * @ioa_cfg: ioa config struct
2172 * @driver_dump: driver dump struct
2173 *
2174 * Return value:
2175 * nothing
2176 **/
2177static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2178 struct ipr_driver_dump *driver_dump)
2179{
2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2181 driver_dump->location_entry.hdr.len =
2182 sizeof(struct ipr_dump_location_entry) -
2183 sizeof(struct ipr_dump_entry_header);
2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2187 driver_dump->hdr.num_entries++;
2188}
2189
2190/**
2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2192 * @ioa_cfg: ioa config struct
2193 * @dump: dump struct
2194 *
2195 * Return value:
2196 * nothing
2197 **/
2198static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2199{
2200 unsigned long start_addr, sdt_word;
2201 unsigned long lock_flags = 0;
2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2204 u32 num_entries, start_off, end_off;
2205 u32 bytes_to_copy, bytes_copied, rc;
2206 struct ipr_sdt *sdt;
2207 int i;
2208
2209 ENTER;
2210
2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2212
2213 if (ioa_cfg->sdt_state != GET_DUMP) {
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return;
2216 }
2217
2218 start_addr = readl(ioa_cfg->ioa_mailbox);
2219
2220 if (!ipr_sdt_is_fmt2(start_addr)) {
2221 dev_err(&ioa_cfg->pdev->dev,
2222 "Invalid dump table format: %lx\n", start_addr);
2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2224 return;
2225 }
2226
2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2228
2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2230
2231 /* Initialize the overall dump header */
2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2233 driver_dump->hdr.num_entries = 1;
2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2238
2239 ipr_dump_version_data(ioa_cfg, driver_dump);
2240 ipr_dump_location_data(ioa_cfg, driver_dump);
2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2242 ipr_dump_trace_data(ioa_cfg, driver_dump);
2243
2244 /* Update dump_header */
2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2246
2247 /* IOA Dump entry */
2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2249 ioa_dump->format = IPR_SDT_FMT2;
2250 ioa_dump->hdr.len = 0;
2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2253
2254 /* First entries in sdt are actually a list of dump addresses and
2255 lengths to gather the real dump data. sdt represents the pointer
2256 to the ioa generated dump table. Dump data will be extracted based
2257 on entries in this table */
2258 sdt = &ioa_dump->sdt;
2259
2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2261 sizeof(struct ipr_sdt) / sizeof(__be32));
2262
2263 /* Smart Dump table is ready to use and the first entry is valid */
2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2265 dev_err(&ioa_cfg->pdev->dev,
2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2267 rc, be32_to_cpu(sdt->hdr.state));
2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2269 ioa_cfg->sdt_state = DUMP_OBTAINED;
2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2271 return;
2272 }
2273
2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2275
2276 if (num_entries > IPR_NUM_SDT_ENTRIES)
2277 num_entries = IPR_NUM_SDT_ENTRIES;
2278
2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2280
2281 for (i = 0; i < num_entries; i++) {
2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2284 break;
2285 }
2286
2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2290 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2291
2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2293 bytes_to_copy = end_off - start_off;
2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2296 continue;
2297 }
2298
2299 /* Copy data from adapter to driver buffers */
2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2301 bytes_to_copy);
2302
2303 ioa_dump->hdr.len += bytes_copied;
2304
2305 if (bytes_copied != bytes_to_copy) {
2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2307 break;
2308 }
2309 }
2310 }
2311 }
2312
2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2314
2315 /* Update dump_header */
2316 driver_dump->hdr.len += ioa_dump->hdr.len;
2317 wmb();
2318 ioa_cfg->sdt_state = DUMP_OBTAINED;
2319 LEAVE;
2320}
2321
2322#else
2323#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2324#endif
2325
2326/**
2327 * ipr_release_dump - Free adapter dump memory
2328 * @kref: kref struct
2329 *
2330 * Return value:
2331 * nothing
2332 **/
2333static void ipr_release_dump(struct kref *kref)
2334{
2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2337 unsigned long lock_flags = 0;
2338 int i;
2339
2340 ENTER;
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 ioa_cfg->dump = NULL;
2343 ioa_cfg->sdt_state = INACTIVE;
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345
2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2348
2349 kfree(dump);
2350 LEAVE;
2351}
2352
2353/**
2354 * ipr_worker_thread - Worker thread
c4028958 2355 * @work: ioa config struct
1da177e4
LT		 2356 *
2357 * Called at task level from a work thread. This function takes care
2358 * of adding and removing device from the mid-layer as configuration
2359 * changes are detected by the adapter.
2360 *
2361 * Return value:
2362 * nothing
2363 **/
c4028958 2364static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2365{
2366 unsigned long lock_flags;
2367 struct ipr_resource_entry *res;
2368 struct scsi_device *sdev;
2369 struct ipr_dump *dump;
c4028958
DH		 2370 struct ipr_ioa_cfg *ioa_cfg =
2371 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2372 u8 bus, target, lun;
2373 int did_work;
2374
2375 ENTER;
2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2377
2378 if (ioa_cfg->sdt_state == GET_DUMP) {
2379 dump = ioa_cfg->dump;
2380 if (!dump) {
2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2382 return;
2383 }
2384 kref_get(&dump->kref);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 ipr_get_ioa_dump(ioa_cfg, dump);
2387 kref_put(&dump->kref, ipr_release_dump);
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2393 return;
2394 }
2395
2396restart:
2397 do {
2398 did_work = 0;
2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 return;
2402 }
2403
2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2405 if (res->del_from_ml && res->sdev) {
2406 did_work = 1;
2407 sdev = res->sdev;
2408 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2411 scsi_remove_device(sdev);
2412 scsi_device_put(sdev);
2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2414 }
2415 break;
2416 }
2417 }
2418 } while(did_work);
2419
2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2421 if (res->add_to_ml) {
2422 bus = res->cfgte.res_addr.bus;
2423 target = res->cfgte.res_addr.target;
2424 lun = res->cfgte.res_addr.lun;
1121b794 2425 res->add_to_ml = 0;
1da177e4
LT		 2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 scsi_add_device(ioa_cfg->host, bus, target, lun);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 goto restart;
2430 }
2431 }
2432
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
312c004d 2434 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2435 LEAVE;
2436}
2437
2438#ifdef CONFIG_SCSI_IPR_TRACE
2439/**
2440 * ipr_read_trace - Dump the adapter trace
2441 * @kobj: kobject struct
91a69029 2442 * @bin_attr: bin_attribute struct
1da177e4
LT		 2443 * @buf: buffer
2444 * @off: offset
2445 * @count: buffer size
2446 *
2447 * Return value:
2448 * number of bytes printed to buffer
2449 **/
91a69029
ZR		 2450static ssize_t ipr_read_trace(struct kobject *kobj,
2451 struct bin_attribute *bin_attr,
2452 char *buf, loff_t off, size_t count)
1da177e4
LT		 2453{
2454 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2455 struct Scsi_Host *shost = class_to_shost(cdev);
2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2457 unsigned long lock_flags = 0;
2458 int size = IPR_TRACE_SIZE;
2459 char *src = (char *)ioa_cfg->trace;
2460
2461 if (off > size)
2462 return 0;
2463 if (off + count > size) {
2464 size -= off;
2465 count = size;
2466 }
2467
2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2469 memcpy(buf, &src[off], count);
2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 return count;
2472}
2473
2474static struct bin_attribute ipr_trace_attr = {
2475 .attr = {
2476 .name = "trace",
2477 .mode = S_IRUGO,
2478 },
2479 .size = 0,
2480 .read = ipr_read_trace,
2481};
2482#endif
2483
62275040 2484static const struct {
2485 enum ipr_cache_state state;
2486 char *name;
2487} cache_state [] = {
2488 { CACHE_NONE, "none" },
2489 { CACHE_DISABLED, "disabled" },
2490 { CACHE_ENABLED, "enabled" }
2491};
2492
2493/**
2494 * ipr_show_write_caching - Show the write caching attribute
2495 * @class_dev: class device struct
2496 * @buf: buffer
2497 *
2498 * Return value:
2499 * number of bytes printed to buffer
2500 **/
2501static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2502{
2503 struct Scsi_Host *shost = class_to_shost(class_dev);
2504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2505 unsigned long lock_flags = 0;
2506 int i, len = 0;
2507
2508 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2509 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2510 if (cache_state[i].state == ioa_cfg->cache_state) {
2511 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2512 break;
2513 }
2514 }
2515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2516 return len;
2517}
2518
2519
2520/**
2521 * ipr_store_write_caching - Enable/disable adapter write cache
2522 * @class_dev: class_device struct
2523 * @buf: buffer
2524 * @count: buffer size
2525 *
2526 * This function will enable/disable adapter write cache.
2527 *
2528 * Return value:
2529 * count on success / other on failure
2530 **/
2531static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2532 const char *buf, size_t count)
2533{
2534 struct Scsi_Host *shost = class_to_shost(class_dev);
2535 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2536 unsigned long lock_flags = 0;
2537 enum ipr_cache_state new_state = CACHE_INVALID;
2538 int i;
2539
2540 if (!capable(CAP_SYS_ADMIN))
2541 return -EACCES;
2542 if (ioa_cfg->cache_state == CACHE_NONE)
2543 return -EINVAL;
2544
2545 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2546 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2547 new_state = cache_state[i].state;
2548 break;
2549 }
2550 }
2551
2552 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2553 return -EINVAL;
2554
2555 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2556 if (ioa_cfg->cache_state == new_state) {
2557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2558 return count;
2559 }
2560
2561 ioa_cfg->cache_state = new_state;
2562 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2563 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2564 if (!ioa_cfg->in_reset_reload)
2565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2567 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2568
2569 return count;
2570}
2571
2572static struct class_device_attribute ipr_ioa_cache_attr = {
2573 .attr = {
2574 .name = "write_cache",
2575 .mode = S_IRUGO | S_IWUSR,
2576 },
2577 .show = ipr_show_write_caching,
2578 .store = ipr_store_write_caching
2579};
2580
1da177e4
LT		 2581/**
2582 * ipr_show_fw_version - Show the firmware version
2583 * @class_dev: class device struct
2584 * @buf: buffer
2585 *
2586 * Return value:
2587 * number of bytes printed to buffer
2588 **/
2589static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2590{
2591 struct Scsi_Host *shost = class_to_shost(class_dev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2593 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2594 unsigned long lock_flags = 0;
2595 int len;
2596
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2599 ucode_vpd->major_release, ucode_vpd->card_type,
2600 ucode_vpd->minor_release[0],
2601 ucode_vpd->minor_release[1]);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2603 return len;
2604}
2605
2606static struct class_device_attribute ipr_fw_version_attr = {
2607 .attr = {
2608 .name = "fw_version",
2609 .mode = S_IRUGO,
2610 },
2611 .show = ipr_show_fw_version,
2612};
2613
2614/**
2615 * ipr_show_log_level - Show the adapter's error logging level
2616 * @class_dev: class device struct
2617 * @buf: buffer
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2623{
2624 struct Scsi_Host *shost = class_to_shost(class_dev);
2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2626 unsigned long lock_flags = 0;
2627 int len;
2628
2629 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2630 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2631 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2632 return len;
2633}
2634
2635/**
2636 * ipr_store_log_level - Change the adapter's error logging level
2637 * @class_dev: class device struct
2638 * @buf: buffer
2639 *
2640 * Return value:
2641 * number of bytes printed to buffer
2642 **/
2643static ssize_t ipr_store_log_level(struct class_device *class_dev,
2644 const char *buf, size_t count)
2645{
2646 struct Scsi_Host *shost = class_to_shost(class_dev);
2647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2648 unsigned long lock_flags = 0;
2649
2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2651 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2653 return strlen(buf);
2654}
2655
2656static struct class_device_attribute ipr_log_level_attr = {
2657 .attr = {
2658 .name = "log_level",
2659 .mode = S_IRUGO | S_IWUSR,
2660 },
2661 .show = ipr_show_log_level,
2662 .store = ipr_store_log_level
2663};
2664
2665/**
2666 * ipr_store_diagnostics - IOA Diagnostics interface
2667 * @class_dev: class_device struct
2668 * @buf: buffer
2669 * @count: buffer size
2670 *
2671 * This function will reset the adapter and wait a reasonable
2672 * amount of time for any errors that the adapter might log.
2673 *
2674 * Return value:
2675 * count on success / other on failure
2676 **/
2677static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2678 const char *buf, size_t count)
2679{
2680 struct Scsi_Host *shost = class_to_shost(class_dev);
2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2682 unsigned long lock_flags = 0;
2683 int rc = count;
2684
2685 if (!capable(CAP_SYS_ADMIN))
2686 return -EACCES;
2687
1da177e4 2688 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2689 while(ioa_cfg->in_reset_reload) {
2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2691 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2693 }
2694
1da177e4
LT		 2695 ioa_cfg->errors_logged = 0;
2696 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2697
2698 if (ioa_cfg->in_reset_reload) {
2699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2700 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2701
2702 /* Wait for a second for any errors to be logged */
2703 msleep(1000);
2704 } else {
2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2706 return -EIO;
2707 }
2708
2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2710 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2711 rc = -EIO;
2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713
2714 return rc;
2715}
2716
2717static struct class_device_attribute ipr_diagnostics_attr = {
2718 .attr = {
2719 .name = "run_diagnostics",
2720 .mode = S_IWUSR,
2721 },
2722 .store = ipr_store_diagnostics
2723};
2724
f37eb54b 2725/**
2726 * ipr_show_adapter_state - Show the adapter's state
2727 * @class_dev: class device struct
2728 * @buf: buffer
2729 *
2730 * Return value:
2731 * number of bytes printed to buffer
2732 **/
2733static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2734{
2735 struct Scsi_Host *shost = class_to_shost(class_dev);
2736 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2737 unsigned long lock_flags = 0;
2738 int len;
2739
2740 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2741 if (ioa_cfg->ioa_is_dead)
2742 len = snprintf(buf, PAGE_SIZE, "offline\n");
2743 else
2744 len = snprintf(buf, PAGE_SIZE, "online\n");
2745 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2746 return len;
2747}
2748
2749/**
2750 * ipr_store_adapter_state - Change adapter state
2751 * @class_dev: class_device struct
2752 * @buf: buffer
2753 * @count: buffer size
2754 *
2755 * This function will change the adapter's state.
2756 *
2757 * Return value:
2758 * count on success / other on failure
2759 **/
2760static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2761 const char *buf, size_t count)
2762{
2763 struct Scsi_Host *shost = class_to_shost(class_dev);
2764 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2765 unsigned long lock_flags;
2766 int result = count;
2767
2768 if (!capable(CAP_SYS_ADMIN))
2769 return -EACCES;
2770
2771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2772 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2773 ioa_cfg->ioa_is_dead = 0;
2774 ioa_cfg->reset_retries = 0;
2775 ioa_cfg->in_ioa_bringdown = 0;
2776 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2777 }
2778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2780
2781 return result;
2782}
2783
2784static struct class_device_attribute ipr_ioa_state_attr = {
2785 .attr = {
2786 .name = "state",
2787 .mode = S_IRUGO | S_IWUSR,
2788 },
2789 .show = ipr_show_adapter_state,
2790 .store = ipr_store_adapter_state
2791};
2792
1da177e4
LT		 2793/**
2794 * ipr_store_reset_adapter - Reset the adapter
2795 * @class_dev: class_device struct
2796 * @buf: buffer
2797 * @count: buffer size
2798 *
2799 * This function will reset the adapter.
2800 *
2801 * Return value:
2802 * count on success / other on failure
2803 **/
2804static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2805 const char *buf, size_t count)
2806{
2807 struct Scsi_Host *shost = class_to_shost(class_dev);
2808 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2809 unsigned long lock_flags;
2810 int result = count;
2811
2812 if (!capable(CAP_SYS_ADMIN))
2813 return -EACCES;
2814
2815 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2816 if (!ioa_cfg->in_reset_reload)
2817 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2818 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2819 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2820
2821 return result;
2822}
2823
2824static struct class_device_attribute ipr_ioa_reset_attr = {
2825 .attr = {
2826 .name = "reset_host",
2827 .mode = S_IWUSR,
2828 },
2829 .store = ipr_store_reset_adapter
2830};
2831
2832/**
2833 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2834 * @buf_len: buffer length
2835 *
2836 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2837 * list to use for microcode download
2838 *
2839 * Return value:
2840 * pointer to sglist / NULL on failure
2841 **/
2842static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2843{
2844 int sg_size, order, bsize_elem, num_elem, i, j;
2845 struct ipr_sglist *sglist;
2846 struct scatterlist *scatterlist;
2847 struct page *page;
2848
2849 /* Get the minimum size per scatter/gather element */
2850 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2851
2852 /* Get the actual size per element */
2853 order = get_order(sg_size);
2854
2855 /* Determine the actual number of bytes per element */
2856 bsize_elem = PAGE_SIZE * (1 << order);
2857
2858 /* Determine the actual number of sg entries needed */
2859 if (buf_len % bsize_elem)
2860 num_elem = (buf_len / bsize_elem) + 1;
2861 else
2862 num_elem = buf_len / bsize_elem;
2863
2864 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2865 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2866 (sizeof(struct scatterlist) * (num_elem - 1)),
2867 GFP_KERNEL);
2868
2869 if (sglist == NULL) {
2870 ipr_trace;
2871 return NULL;
2872 }
2873
1da177e4
LT		 2874 scatterlist = sglist->scatterlist;
2875
2876 sglist->order = order;
2877 sglist->num_sg = num_elem;
2878
2879 /* Allocate a bunch of sg elements */
2880 for (i = 0; i < num_elem; i++) {
2881 page = alloc_pages(GFP_KERNEL, order);
2882 if (!page) {
2883 ipr_trace;
2884
2885 /* Free up what we already allocated */
2886 for (j = i - 1; j >= 0; j--)
2887 __free_pages(scatterlist[j].page, order);
2888 kfree(sglist);
2889 return NULL;
2890 }
2891
2892 scatterlist[i].page = page;
2893 }
2894
2895 return sglist;
2896}
2897
2898/**
2899 * ipr_free_ucode_buffer - Frees a microcode download buffer
2900 * @p_dnld: scatter/gather list pointer
2901 *
2902 * Free a DMA'able ucode download buffer previously allocated with
2903 * ipr_alloc_ucode_buffer
2904 *
2905 * Return value:
2906 * nothing
2907 **/
2908static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2909{
2910 int i;
2911
2912 for (i = 0; i < sglist->num_sg; i++)
2913 __free_pages(sglist->scatterlist[i].page, sglist->order);
2914
2915 kfree(sglist);
2916}
2917
2918/**
2919 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2920 * @sglist: scatter/gather list pointer
2921 * @buffer: buffer pointer
2922 * @len: buffer length
2923 *
2924 * Copy a microcode image from a user buffer into a buffer allocated by
2925 * ipr_alloc_ucode_buffer
2926 *
2927 * Return value:
2928 * 0 on success / other on failure
2929 **/
2930static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2931 u8 *buffer, u32 len)
2932{
2933 int bsize_elem, i, result = 0;
2934 struct scatterlist *scatterlist;
2935 void *kaddr;
2936
2937 /* Determine the actual number of bytes per element */
2938 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2939
2940 scatterlist = sglist->scatterlist;
2941
2942 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2943 kaddr = kmap(scatterlist[i].page);
2944 memcpy(kaddr, buffer, bsize_elem);
2945 kunmap(scatterlist[i].page);
2946
2947 scatterlist[i].length = bsize_elem;
2948
2949 if (result != 0) {
2950 ipr_trace;
2951 return result;
2952 }
2953 }
2954
2955 if (len % bsize_elem) {
2956 kaddr = kmap(scatterlist[i].page);
2957 memcpy(kaddr, buffer, len % bsize_elem);
2958 kunmap(scatterlist[i].page);
2959
2960 scatterlist[i].length = len % bsize_elem;
2961 }
2962
2963 sglist->buffer_len = len;
2964 return result;
2965}
2966
2967/**
12baa420 2968 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2969 * @ipr_cmd: ipr command struct
2970 * @sglist: scatter/gather list
1da177e4 2971 *
12baa420 2972 * Builds a microcode download IOA data list (IOADL).
1da177e4 2973 *
1da177e4 2974 **/
12baa420 2975static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2976 struct ipr_sglist *sglist)
1da177e4 2977{
1da177e4
LT		 2978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2979 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2980 struct scatterlist *scatterlist = sglist->scatterlist;
2981 int i;
2982
12baa420 2983 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2985 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2986 ioarcb->write_ioadl_len =
2987 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2988
2989 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2990 ioadl[i].flags_and_data_len =
2991 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2992 ioadl[i].address =
2993 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2994 }
2995
12baa420 2996 ioadl[i-1].flags_and_data_len |=
2997 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2998}
2999
3000/**
3001 * ipr_update_ioa_ucode - Update IOA's microcode
3002 * @ioa_cfg: ioa config struct
3003 * @sglist: scatter/gather list
3004 *
3005 * Initiate an adapter reset to update the IOA's microcode
3006 *
3007 * Return value:
3008 * 0 on success / -EIO on failure
3009 **/
3010static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3011 struct ipr_sglist *sglist)
3012{
3013 unsigned long lock_flags;
3014
3015 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3016 while(ioa_cfg->in_reset_reload) {
3017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3018 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3019 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3020 }
12baa420 3021
3022 if (ioa_cfg->ucode_sglist) {
3023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3024 dev_err(&ioa_cfg->pdev->dev,
3025 "Microcode download already in progress\n");
3026 return -EIO;
1da177e4 3027 }
12baa420 3028
3029 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3030 sglist->num_sg, DMA_TO_DEVICE);
3031
3032 if (!sglist->num_dma_sg) {
3033 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3034 dev_err(&ioa_cfg->pdev->dev,
3035 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3036 return -EIO;
3037 }
3038
12baa420 3039 ioa_cfg->ucode_sglist = sglist;
3040 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3042 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3043
3044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3045 ioa_cfg->ucode_sglist = NULL;
3046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3047 return 0;
3048}
3049
3050/**
3051 * ipr_store_update_fw - Update the firmware on the adapter
3052 * @class_dev: class_device struct
3053 * @buf: buffer
3054 * @count: buffer size
3055 *
3056 * This function will update the firmware on the adapter.
3057 *
3058 * Return value:
3059 * count on success / other on failure
3060 **/
3061static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3062 const char *buf, size_t count)
3063{
3064 struct Scsi_Host *shost = class_to_shost(class_dev);
3065 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3066 struct ipr_ucode_image_header *image_hdr;
3067 const struct firmware *fw_entry;
3068 struct ipr_sglist *sglist;
1da177e4
LT		 3069 char fname[100];
3070 char *src;
3071 int len, result, dnld_size;
3072
3073 if (!capable(CAP_SYS_ADMIN))
3074 return -EACCES;
3075
3076 len = snprintf(fname, 99, "%s", buf);
3077 fname[len-1] = '\0';
3078
3079 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3080 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3081 return -EIO;
3082 }
3083
3084 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3085
3086 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3087 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3088 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3089 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3090 release_firmware(fw_entry);
3091 return -EINVAL;
3092 }
3093
3094 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3095 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3096 sglist = ipr_alloc_ucode_buffer(dnld_size);
3097
3098 if (!sglist) {
3099 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3100 release_firmware(fw_entry);
3101 return -ENOMEM;
3102 }
3103
3104 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3105
3106 if (result) {
3107 dev_err(&ioa_cfg->pdev->dev,
3108 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3109 goto out;
1da177e4
LT		 3110 }
3111
12baa420 3112 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3113
12baa420 3114 if (!result)
3115 result = count;
3116out:
1da177e4
LT		 3117 ipr_free_ucode_buffer(sglist);
3118 release_firmware(fw_entry);
12baa420 3119 return result;
1da177e4
LT		 3120}
3121
3122static struct class_device_attribute ipr_update_fw_attr = {
3123 .attr = {
3124 .name = "update_fw",
3125 .mode = S_IWUSR,
3126 },
3127 .store = ipr_store_update_fw
3128};
3129
3130static struct class_device_attribute *ipr_ioa_attrs[] = {
3131 &ipr_fw_version_attr,
3132 &ipr_log_level_attr,
3133 &ipr_diagnostics_attr,
f37eb54b 3134 &ipr_ioa_state_attr,
1da177e4
LT		 3135 &ipr_ioa_reset_attr,
3136 &ipr_update_fw_attr,
62275040 3137 &ipr_ioa_cache_attr,
1da177e4
LT		 3138 NULL,
3139};
3140
3141#ifdef CONFIG_SCSI_IPR_DUMP
3142/**
3143 * ipr_read_dump - Dump the adapter
3144 * @kobj: kobject struct
91a69029 3145 * @bin_attr: bin_attribute struct
1da177e4
LT		 3146 * @buf: buffer
3147 * @off: offset
3148 * @count: buffer size
3149 *
3150 * Return value:
3151 * number of bytes printed to buffer
3152 **/
91a69029
ZR		 3153static ssize_t ipr_read_dump(struct kobject *kobj,
3154 struct bin_attribute *bin_attr,
3155 char *buf, loff_t off, size_t count)
1da177e4
LT		 3156{
3157 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3158 struct Scsi_Host *shost = class_to_shost(cdev);
3159 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3160 struct ipr_dump *dump;
3161 unsigned long lock_flags = 0;
3162 char *src;
3163 int len;
3164 size_t rc = count;
3165
3166 if (!capable(CAP_SYS_ADMIN))
3167 return -EACCES;
3168
3169 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3170 dump = ioa_cfg->dump;
3171
3172 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3174 return 0;
3175 }
3176 kref_get(&dump->kref);
3177 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3178
3179 if (off > dump->driver_dump.hdr.len) {
3180 kref_put(&dump->kref, ipr_release_dump);
3181 return 0;
3182 }
3183
3184 if (off + count > dump->driver_dump.hdr.len) {
3185 count = dump->driver_dump.hdr.len - off;
3186 rc = count;
3187 }
3188
3189 if (count && off < sizeof(dump->driver_dump)) {
3190 if (off + count > sizeof(dump->driver_dump))
3191 len = sizeof(dump->driver_dump) - off;
3192 else
3193 len = count;
3194 src = (u8 *)&dump->driver_dump + off;
3195 memcpy(buf, src, len);
3196 buf += len;
3197 off += len;
3198 count -= len;
3199 }
3200
3201 off -= sizeof(dump->driver_dump);
3202
3203 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3204 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3205 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3206 else
3207 len = count;
3208 src = (u8 *)&dump->ioa_dump + off;
3209 memcpy(buf, src, len);
3210 buf += len;
3211 off += len;
3212 count -= len;
3213 }
3214
3215 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3216
3217 while (count) {
3218 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3219 len = PAGE_ALIGN(off) - off;
3220 else
3221 len = count;
3222 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3223 src += off & ~PAGE_MASK;
3224 memcpy(buf, src, len);
3225 buf += len;
3226 off += len;
3227 count -= len;
3228 }
3229
3230 kref_put(&dump->kref, ipr_release_dump);
3231 return rc;
3232}
3233
3234/**
3235 * ipr_alloc_dump - Prepare for adapter dump
3236 * @ioa_cfg: ioa config struct
3237 *
3238 * Return value:
3239 * 0 on success / other on failure
3240 **/
3241static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3242{
3243 struct ipr_dump *dump;
3244 unsigned long lock_flags = 0;
3245
0bc42e35 3246 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3247
3248 if (!dump) {
3249 ipr_err("Dump memory allocation failed\n");
3250 return -ENOMEM;
3251 }
3252
1da177e4
LT		 3253 kref_init(&dump->kref);
3254 dump->ioa_cfg = ioa_cfg;
3255
3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3257
3258 if (INACTIVE != ioa_cfg->sdt_state) {
3259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3260 kfree(dump);
3261 return 0;
3262 }
3263
3264 ioa_cfg->dump = dump;
3265 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3266 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3267 ioa_cfg->dump_taken = 1;
3268 schedule_work(&ioa_cfg->work_q);
3269 }
3270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3271
1da177e4
LT		 3272 return 0;
3273}
3274
3275/**
3276 * ipr_free_dump - Free adapter dump memory
3277 * @ioa_cfg: ioa config struct
3278 *
3279 * Return value:
3280 * 0 on success / other on failure
3281 **/
3282static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3283{
3284 struct ipr_dump *dump;
3285 unsigned long lock_flags = 0;
3286
3287 ENTER;
3288
3289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3290 dump = ioa_cfg->dump;
3291 if (!dump) {
3292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3293 return 0;
3294 }
3295
3296 ioa_cfg->dump = NULL;
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298
3299 kref_put(&dump->kref, ipr_release_dump);
3300
3301 LEAVE;
3302 return 0;
3303}
3304
3305/**
3306 * ipr_write_dump - Setup dump state of adapter
3307 * @kobj: kobject struct
91a69029 3308 * @bin_attr: bin_attribute struct
1da177e4
LT		 3309 * @buf: buffer
3310 * @off: offset
3311 * @count: buffer size
3312 *
3313 * Return value:
3314 * number of bytes printed to buffer
3315 **/
91a69029
ZR		 3316static ssize_t ipr_write_dump(struct kobject *kobj,
3317 struct bin_attribute *bin_attr,
3318 char *buf, loff_t off, size_t count)
1da177e4
LT		 3319{
3320 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3321 struct Scsi_Host *shost = class_to_shost(cdev);
3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3323 int rc;
3324
3325 if (!capable(CAP_SYS_ADMIN))
3326 return -EACCES;
3327
3328 if (buf[0] == '1')
3329 rc = ipr_alloc_dump(ioa_cfg);
3330 else if (buf[0] == '0')
3331 rc = ipr_free_dump(ioa_cfg);
3332 else
3333 return -EINVAL;
3334
3335 if (rc)
3336 return rc;
3337 else
3338 return count;
3339}
3340
3341static struct bin_attribute ipr_dump_attr = {
3342 .attr = {
3343 .name = "dump",
3344 .mode = S_IRUSR | S_IWUSR,
3345 },
3346 .size = 0,
3347 .read = ipr_read_dump,
3348 .write = ipr_write_dump
3349};
3350#else
3351static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3352#endif
3353
3354/**
3355 * ipr_change_queue_depth - Change the device's queue depth
3356 * @sdev: scsi device struct
3357 * @qdepth: depth to set
3358 *
3359 * Return value:
3360 * actual depth set
3361 **/
3362static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3363{
35a39691
BK		 3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3365 struct ipr_resource_entry *res;
3366 unsigned long lock_flags = 0;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 res = (struct ipr_resource_entry *)sdev->hostdata;
3370
3371 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3372 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374
1da177e4
LT		 3375 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3376 return sdev->queue_depth;
3377}
3378
3379/**
3380 * ipr_change_queue_type - Change the device's queue type
3381 * @dsev: scsi device struct
3382 * @tag_type: type of tags to use
3383 *
3384 * Return value:
3385 * actual queue type set
3386 **/
3387static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3388{
3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3390 struct ipr_resource_entry *res;
3391 unsigned long lock_flags = 0;
3392
3393 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3394 res = (struct ipr_resource_entry *)sdev->hostdata;
3395
3396 if (res) {
3397 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3398 /*
3399 * We don't bother quiescing the device here since the
3400 * adapter firmware does it for us.
3401 */
3402 scsi_set_tag_type(sdev, tag_type);
3403
3404 if (tag_type)
3405 scsi_activate_tcq(sdev, sdev->queue_depth);
3406 else
3407 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3408 } else
3409 tag_type = 0;
3410 } else
3411 tag_type = 0;
3412
3413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3414 return tag_type;
3415}
3416
3417/**
3418 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3419 * @dev: device struct
3420 * @buf: buffer
3421 *
3422 * Return value:
3423 * number of bytes printed to buffer
3424 **/
10523b3b 3425static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3426{
3427 struct scsi_device *sdev = to_scsi_device(dev);
3428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3429 struct ipr_resource_entry *res;
3430 unsigned long lock_flags = 0;
3431 ssize_t len = -ENXIO;
3432
3433 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3434 res = (struct ipr_resource_entry *)sdev->hostdata;
3435 if (res)
3436 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3438 return len;
3439}
3440
3441static struct device_attribute ipr_adapter_handle_attr = {
3442 .attr = {
3443 .name = "adapter_handle",
3444 .mode = S_IRUSR,
3445 },
3446 .show = ipr_show_adapter_handle
3447};
3448
3449static struct device_attribute *ipr_dev_attrs[] = {
3450 &ipr_adapter_handle_attr,
3451 NULL,
3452};
3453
3454/**
3455 * ipr_biosparam - Return the HSC mapping
3456 * @sdev: scsi device struct
3457 * @block_device: block device pointer
3458 * @capacity: capacity of the device
3459 * @parm: Array containing returned HSC values.
3460 *
3461 * This function generates the HSC parms that fdisk uses.
3462 * We want to make sure we return something that places partitions
3463 * on 4k boundaries for best performance with the IOA.
3464 *
3465 * Return value:
3466 * 0 on success
3467 **/
3468static int ipr_biosparam(struct scsi_device *sdev,
3469 struct block_device *block_device,
3470 sector_t capacity, int *parm)
3471{
3472 int heads, sectors;
3473 sector_t cylinders;
3474
3475 heads = 128;
3476 sectors = 32;
3477
3478 cylinders = capacity;
3479 sector_div(cylinders, (128 * 32));
3480
3481 /* return result */
3482 parm[0] = heads;
3483 parm[1] = sectors;
3484 parm[2] = cylinders;
3485
3486 return 0;
3487}
3488
35a39691
BK		 3489/**
3490 * ipr_find_starget - Find target based on bus/target.
3491 * @starget: scsi target struct
3492 *
3493 * Return value:
3494 * resource entry pointer if found / NULL if not found
3495 **/
3496static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3497{
3498 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3499 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3500 struct ipr_resource_entry *res;
3501
3502 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3503 if ((res->cfgte.res_addr.bus == starget->channel) &&
3504 (res->cfgte.res_addr.target == starget->id) &&
3505 (res->cfgte.res_addr.lun == 0)) {
3506 return res;
3507 }
3508 }
3509
3510 return NULL;
3511}
3512
3513static struct ata_port_info sata_port_info;
3514
3515/**
3516 * ipr_target_alloc - Prepare for commands to a SCSI target
3517 * @starget: scsi target struct
3518 *
3519 * If the device is a SATA device, this function allocates an
3520 * ATA port with libata, else it does nothing.
3521 *
3522 * Return value:
3523 * 0 on success / non-0 on failure
3524 **/
3525static int ipr_target_alloc(struct scsi_target *starget)
3526{
3527 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3529 struct ipr_sata_port *sata_port;
3530 struct ata_port *ap;
3531 struct ipr_resource_entry *res;
3532 unsigned long lock_flags;
3533
3534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3535 res = ipr_find_starget(starget);
3536 starget->hostdata = NULL;
3537
3538 if (res && ipr_is_gata(res)) {
3539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3540 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3541 if (!sata_port)
3542 return -ENOMEM;
3543
3544 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3545 if (ap) {
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 sata_port->ioa_cfg = ioa_cfg;
3548 sata_port->ap = ap;
3549 sata_port->res = res;
3550
3551 res->sata_port = sata_port;
3552 ap->private_data = sata_port;
3553 starget->hostdata = sata_port;
3554 } else {
3555 kfree(sata_port);
3556 return -ENOMEM;
3557 }
3558 }
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560
3561 return 0;
3562}
3563
3564/**
3565 * ipr_target_destroy - Destroy a SCSI target
3566 * @starget: scsi target struct
3567 *
3568 * If the device was a SATA device, this function frees the libata
3569 * ATA port, else it does nothing.
3570 *
3571 **/
3572static void ipr_target_destroy(struct scsi_target *starget)
3573{
3574 struct ipr_sata_port *sata_port = starget->hostdata;
3575
3576 if (sata_port) {
3577 starget->hostdata = NULL;
3578 ata_sas_port_destroy(sata_port->ap);
3579 kfree(sata_port);
3580 }
3581}
3582
3583/**
3584 * ipr_find_sdev - Find device based on bus/target/lun.
3585 * @sdev: scsi device struct
3586 *
3587 * Return value:
3588 * resource entry pointer if found / NULL if not found
3589 **/
3590static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3591{
3592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3593 struct ipr_resource_entry *res;
3594
3595 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3596 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3597 (res->cfgte.res_addr.target == sdev->id) &&
3598 (res->cfgte.res_addr.lun == sdev->lun))
3599 return res;
3600 }
3601
3602 return NULL;
3603}
3604
1da177e4
LT		 3605/**
3606 * ipr_slave_destroy - Unconfigure a SCSI device
3607 * @sdev: scsi device struct
3608 *
3609 * Return value:
3610 * nothing
3611 **/
3612static void ipr_slave_destroy(struct scsi_device *sdev)
3613{
3614 struct ipr_resource_entry *res;
3615 struct ipr_ioa_cfg *ioa_cfg;
3616 unsigned long lock_flags = 0;
3617
3618 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3619
3620 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3621 res = (struct ipr_resource_entry *) sdev->hostdata;
3622 if (res) {
35a39691
BK		 3623 if (res->sata_port)
3624 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3625 sdev->hostdata = NULL;
3626 res->sdev = NULL;
35a39691 3627 res->sata_port = NULL;
1da177e4
LT		 3628 }
3629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3630}
3631
3632/**
3633 * ipr_slave_configure - Configure a SCSI device
3634 * @sdev: scsi device struct
3635 *
3636 * This function configures the specified scsi device.
3637 *
3638 * Return value:
3639 * 0 on success
3640 **/
3641static int ipr_slave_configure(struct scsi_device *sdev)
3642{
3643 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3644 struct ipr_resource_entry *res;
3645 unsigned long lock_flags = 0;
3646
3647 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3648 res = sdev->hostdata;
3649 if (res) {
3650 if (ipr_is_af_dasd_device(res))
3651 sdev->type = TYPE_RAID;
0726ce26 3652 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3653 sdev->scsi_level = 4;
0726ce26 3654 sdev->no_uld_attach = 1;
3655 }
1da177e4
LT		 3656 if (ipr_is_vset_device(res)) {
3657 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3658 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3659 }
e4fbf44e 3660 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3661 sdev->allow_restart = 1;
35a39691
BK		 3662 if (ipr_is_gata(res) && res->sata_port) {
3663 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3664 ata_sas_slave_configure(sdev, res->sata_port->ap);
3665 } else {
3666 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3667 }
1da177e4
LT		 3668 }
3669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3670 return 0;
3671}
3672
35a39691
BK		 3673/**
3674 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3675 * @sdev: scsi device struct
3676 *
3677 * This function initializes an ATA port so that future commands
3678 * sent through queuecommand will work.
3679 *
3680 * Return value:
3681 * 0 on success
3682 **/
3683static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3684{
3685 struct ipr_sata_port *sata_port = NULL;
3686 int rc = -ENXIO;
3687
3688 ENTER;
3689 if (sdev->sdev_target)
3690 sata_port = sdev->sdev_target->hostdata;
3691 if (sata_port)
3692 rc = ata_sas_port_init(sata_port->ap);
3693 if (rc)
3694 ipr_slave_destroy(sdev);
3695
3696 LEAVE;
3697 return rc;
3698}
3699
1da177e4
LT		 3700/**
3701 * ipr_slave_alloc - Prepare for commands to a device.
3702 * @sdev: scsi device struct
3703 *
3704 * This function saves a pointer to the resource entry
3705 * in the scsi device struct if the device exists. We
3706 * can then use this pointer in ipr_queuecommand when
3707 * handling new commands.
3708 *
3709 * Return value:
692aebfc 3710 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3711 **/
3712static int ipr_slave_alloc(struct scsi_device *sdev)
3713{
3714 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3715 struct ipr_resource_entry *res;
3716 unsigned long lock_flags;
692aebfc 3717 int rc = -ENXIO;
1da177e4
LT		 3718
3719 sdev->hostdata = NULL;
3720
3721 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3722
35a39691
BK		 3723 res = ipr_find_sdev(sdev);
3724 if (res) {
3725 res->sdev = sdev;
3726 res->add_to_ml = 0;
3727 res->in_erp = 0;
3728 sdev->hostdata = res;
3729 if (!ipr_is_naca_model(res))
3730 res->needs_sync_complete = 1;
3731 rc = 0;
3732 if (ipr_is_gata(res)) {
3733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3734 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3735 }
3736 }
3737
3738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3739
692aebfc 3740 return rc;
1da177e4
LT		 3741}
3742
3743/**
3744 * ipr_eh_host_reset - Reset the host adapter
3745 * @scsi_cmd: scsi command struct
3746 *
3747 * Return value:
3748 * SUCCESS / FAILED
3749 **/
df0ae249 3750static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3751{
3752 struct ipr_ioa_cfg *ioa_cfg;
3753 int rc;
3754
3755 ENTER;
3756 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3757
3758 dev_err(&ioa_cfg->pdev->dev,
3759 "Adapter being reset as a result of error recovery.\n");
3760
3761 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3762 ioa_cfg->sdt_state = GET_DUMP;
3763
3764 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3765
3766 LEAVE;
3767 return rc;
3768}
3769
df0ae249
JG		 3770static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3771{
3772 int rc;
3773
3774 spin_lock_irq(cmd->device->host->host_lock);
3775 rc = __ipr_eh_host_reset(cmd);
3776 spin_unlock_irq(cmd->device->host->host_lock);
3777
3778 return rc;
3779}
3780
c6513096
BK		 3781/**
3782 * ipr_device_reset - Reset the device
3783 * @ioa_cfg: ioa config struct
3784 * @res: resource entry struct
3785 *
3786 * This function issues a device reset to the affected device.
3787 * If the device is a SCSI device, a LUN reset will be sent
3788 * to the device first. If that does not work, a target reset
35a39691
BK		 3789 * will be sent. If the device is a SATA device, a PHY reset will
3790 * be sent.
c6513096
BK		 3791 *
3792 * Return value:
3793 * 0 on success / non-zero on failure
3794 **/
3795static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3796 struct ipr_resource_entry *res)
3797{
3798 struct ipr_cmnd *ipr_cmd;
3799 struct ipr_ioarcb *ioarcb;
3800 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3801 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3802 u32 ioasc;
3803
3804 ENTER;
3805 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3806 ioarcb = &ipr_cmd->ioarcb;
3807 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3808 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3809
3810 ioarcb->res_handle = res->cfgte.res_handle;
3811 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3812 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3813 if (ipr_is_gata(res)) {
3814 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3815 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3816 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3817 }
c6513096
BK		 3818
3819 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3820 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3821 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3822 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3823 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3824 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3825
3826 LEAVE;
3827 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3828}
3829
35a39691
BK		 3830/**
3831 * ipr_sata_reset - Reset the SATA port
3832 * @ap: SATA port to reset
3833 * @classes: class of the attached device
3834 *
3835 * This function issues a SATA phy reset to the affected ATA port.
3836 *
3837 * Return value:
3838 * 0 on success / non-zero on failure
3839 **/
120bda35
AM		 3840static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
3841 unsigned long deadline)
35a39691
BK		 3842{
3843 struct ipr_sata_port *sata_port = ap->private_data;
3844 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3845 struct ipr_resource_entry *res;
3846 unsigned long lock_flags = 0;
3847 int rc = -ENXIO;
3848
3849 ENTER;
3850 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3851 while(ioa_cfg->in_reset_reload) {
3852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3853 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3854 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3855 }
3856
35a39691
BK		 3857 res = sata_port->res;
3858 if (res) {
3859 rc = ipr_device_reset(ioa_cfg, res);
3860 switch(res->cfgte.proto) {
3861 case IPR_PROTO_SATA:
3862 case IPR_PROTO_SAS_STP:
3863 *classes = ATA_DEV_ATA;
3864 break;
3865 case IPR_PROTO_SATA_ATAPI:
3866 case IPR_PROTO_SAS_STP_ATAPI:
3867 *classes = ATA_DEV_ATAPI;
3868 break;
3869 default:
3870 *classes = ATA_DEV_UNKNOWN;
3871 break;
3872 };
3873 }
3874
3875 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3876 LEAVE;
3877 return rc;
3878}
3879
1da177e4
LT		 3880/**
3881 * ipr_eh_dev_reset - Reset the device
3882 * @scsi_cmd: scsi command struct
3883 *
3884 * This function issues a device reset to the affected device.
3885 * A LUN reset will be sent to the device first. If that does
3886 * not work, a target reset will be sent.
3887 *
3888 * Return value:
3889 * SUCCESS / FAILED
3890 **/
94d0e7b8 3891static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3892{
3893 struct ipr_cmnd *ipr_cmd;
3894 struct ipr_ioa_cfg *ioa_cfg;
3895 struct ipr_resource_entry *res;
35a39691
BK		 3896 struct ata_port *ap;
3897 int rc = 0;
1da177e4
LT		 3898
3899 ENTER;
3900 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3901 res = scsi_cmd->device->hostdata;
3902
eeb88307 3903 if (!res)
1da177e4
LT		 3904 return FAILED;
3905
3906 /*
3907 * If we are currently going through reset/reload, return failed. This will force the
3908 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3909 * reset to complete
3910 */
3911 if (ioa_cfg->in_reset_reload)
3912 return FAILED;
3913 if (ioa_cfg->ioa_is_dead)
3914 return FAILED;
3915
3916 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3917 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3918 if (ipr_cmd->scsi_cmd)
3919 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3920 if (ipr_cmd->qc)
3921 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3922 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3923 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3924 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3925 }
1da177e4
LT		 3926 }
3927 }
3928
3929 res->resetting_device = 1;
fb3ed3cb 3930 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3931
3932 if (ipr_is_gata(res) && res->sata_port) {
3933 ap = res->sata_port->ap;
3934 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3935 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3936 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3937
3938 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3939 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3940 rc = -EIO;
3941 break;
3942 }
3943 }
35a39691
BK		 3944 } else
3945 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3946 res->resetting_device = 0;
3947
1da177e4 3948 LEAVE;
c6513096 3949 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3950}
3951
94d0e7b8
JG		 3952static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3953{
3954 int rc;
3955
3956 spin_lock_irq(cmd->device->host->host_lock);
3957 rc = __ipr_eh_dev_reset(cmd);
3958 spin_unlock_irq(cmd->device->host->host_lock);
3959
3960 return rc;
3961}
3962
1da177e4
LT		 3963/**
3964 * ipr_bus_reset_done - Op done function for bus reset.
3965 * @ipr_cmd: ipr command struct
3966 *
3967 * This function is the op done function for a bus reset
3968 *
3969 * Return value:
3970 * none
3971 **/
3972static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3973{
3974 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3975 struct ipr_resource_entry *res;
3976
3977 ENTER;
3978 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3979 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3980 sizeof(res->cfgte.res_handle))) {
3981 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3982 break;
3983 }
3984 }
3985
3986 /*
3987 * If abort has not completed, indicate the reset has, else call the
3988 * abort's done function to wake the sleeping eh thread
3989 */
3990 if (ipr_cmd->sibling->sibling)
3991 ipr_cmd->sibling->sibling = NULL;
3992 else
3993 ipr_cmd->sibling->done(ipr_cmd->sibling);
3994
3995 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3996 LEAVE;
3997}
3998
3999/**
4000 * ipr_abort_timeout - An abort task has timed out
4001 * @ipr_cmd: ipr command struct
4002 *
4003 * This function handles when an abort task times out. If this
4004 * happens we issue a bus reset since we have resources tied
4005 * up that must be freed before returning to the midlayer.
4006 *
4007 * Return value:
4008 * none
4009 **/
4010static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4011{
4012 struct ipr_cmnd *reset_cmd;
4013 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4014 struct ipr_cmd_pkt *cmd_pkt;
4015 unsigned long lock_flags = 0;
4016
4017 ENTER;
4018 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4019 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4021 return;
4022 }
4023
fb3ed3cb 4024 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4025 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4026 ipr_cmd->sibling = reset_cmd;
4027 reset_cmd->sibling = ipr_cmd;
4028 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4029 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4030 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4031 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4032 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4033
4034 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4036 LEAVE;
4037}
4038
4039/**
4040 * ipr_cancel_op - Cancel specified op
4041 * @scsi_cmd: scsi command struct
4042 *
4043 * This function cancels specified op.
4044 *
4045 * Return value:
4046 * SUCCESS / FAILED
4047 **/
4048static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4049{
4050 struct ipr_cmnd *ipr_cmd;
4051 struct ipr_ioa_cfg *ioa_cfg;
4052 struct ipr_resource_entry *res;
4053 struct ipr_cmd_pkt *cmd_pkt;
4054 u32 ioasc;
4055 int op_found = 0;
4056
4057 ENTER;
4058 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4059 res = scsi_cmd->device->hostdata;
4060
8fa728a2
JG		 4061 /* If we are currently going through reset/reload, return failed.
4062 * This will force the mid-layer to call ipr_eh_host_reset,
4063 * which will then go to sleep and wait for the reset to complete
4064 */
4065 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4066 return FAILED;
04d9768f 4067 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4068 return FAILED;
4069
4070 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4071 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4072 ipr_cmd->done = ipr_scsi_eh_done;
4073 op_found = 1;
4074 break;
4075 }
4076 }
4077
4078 if (!op_found)
4079 return SUCCESS;
4080
4081 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4082 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4083 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4084 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4085 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4086 ipr_cmd->u.sdev = scsi_cmd->device;
4087
fb3ed3cb
BK		 4088 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4089 scsi_cmd->cmnd[0]);
1da177e4
LT		 4090 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4091 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4092
4093 /*
4094 * If the abort task timed out and we sent a bus reset, we will get
4095 * one the following responses to the abort
4096 */
4097 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4098 ioasc = 0;
4099 ipr_trace;
4100 }
4101
4102 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa 4103 if (!ipr_is_naca_model(res))
4104 res->needs_sync_complete = 1;
1da177e4
LT		 4105
4106 LEAVE;
4107 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4108}
4109
4110/**
4111 * ipr_eh_abort - Abort a single op
4112 * @scsi_cmd: scsi command struct
4113 *
4114 * Return value:
4115 * SUCCESS / FAILED
4116 **/
4117static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4118{
8fa728a2
JG		 4119 unsigned long flags;
4120 int rc;
1da177e4
LT		 4121
4122 ENTER;
1da177e4 4123
8fa728a2
JG		 4124 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4125 rc = ipr_cancel_op(scsi_cmd);
4126 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4127
4128 LEAVE;
8fa728a2 4129 return rc;
1da177e4
LT		 4130}
4131
4132/**
4133 * ipr_handle_other_interrupt - Handle "other" interrupts
4134 * @ioa_cfg: ioa config struct
4135 * @int_reg: interrupt register
4136 *
4137 * Return value:
4138 * IRQ_NONE / IRQ_HANDLED
4139 **/
4140static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4141 volatile u32 int_reg)
4142{
4143 irqreturn_t rc = IRQ_HANDLED;
4144
4145 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4146 /* Mask the interrupt */
4147 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4148
4149 /* Clear the interrupt */
4150 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4151 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4152
4153 list_del(&ioa_cfg->reset_cmd->queue);
4154 del_timer(&ioa_cfg->reset_cmd->timer);
4155 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4156 } else {
4157 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4158 ioa_cfg->ioa_unit_checked = 1;
4159 else
4160 dev_err(&ioa_cfg->pdev->dev,
4161 "Permanent IOA failure. 0x%08X\n", int_reg);
4162
4163 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4164 ioa_cfg->sdt_state = GET_DUMP;
4165
4166 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4167 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4168 }
4169
4170 return rc;
4171}
4172
4173/**
4174 * ipr_isr - Interrupt service routine
4175 * @irq: irq number
4176 * @devp: pointer to ioa config struct
1da177e4
LT		 4177 *
4178 * Return value:
4179 * IRQ_NONE / IRQ_HANDLED
4180 **/
7d12e780 4181static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4182{
4183 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4184 unsigned long lock_flags = 0;
4185 volatile u32 int_reg, int_mask_reg;
4186 u32 ioasc;
4187 u16 cmd_index;
4188 struct ipr_cmnd *ipr_cmd;
4189 irqreturn_t rc = IRQ_NONE;
4190
4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4192
4193 /* If interrupts are disabled, ignore the interrupt */
4194 if (!ioa_cfg->allow_interrupts) {
4195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4196 return IRQ_NONE;
4197 }
4198
4199 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4200 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4201
4202 /* If an interrupt on the adapter did not occur, ignore it */
4203 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4205 return IRQ_NONE;
4206 }
4207
4208 while (1) {
4209 ipr_cmd = NULL;
4210
4211 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4212 ioa_cfg->toggle_bit) {
4213
4214 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4215 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4216
4217 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4218 ioa_cfg->errors_logged++;
4219 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4220
4221 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4222 ioa_cfg->sdt_state = GET_DUMP;
4223
4224 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4226 return IRQ_HANDLED;
4227 }
4228
4229 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4230
4231 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4232
4233 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4234
4235 list_del(&ipr_cmd->queue);
4236 del_timer(&ipr_cmd->timer);
4237 ipr_cmd->done(ipr_cmd);
4238
4239 rc = IRQ_HANDLED;
4240
4241 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4242 ioa_cfg->hrrq_curr++;
4243 } else {
4244 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4245 ioa_cfg->toggle_bit ^= 1u;
4246 }
4247 }
4248
4249 if (ipr_cmd != NULL) {
4250 /* Clear the PCI interrupt */
4251 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4252 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4253 } else
4254 break;
4255 }
4256
4257 if (unlikely(rc == IRQ_NONE))
4258 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4259
4260 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4261 return rc;
4262}
4263
4264/**
4265 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4266 * @ioa_cfg: ioa config struct
4267 * @ipr_cmd: ipr command struct
4268 *
4269 * Return value:
4270 * 0 on success / -1 on failure
4271 **/
4272static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4273 struct ipr_cmnd *ipr_cmd)
4274{
63015bc9
FT		 4275 int i, nseg;
4276 struct scatterlist *sg;
1da177e4
LT		 4277 u32 length;
4278 u32 ioadl_flags = 0;
4279 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4280 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4281 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4282
63015bc9
FT		 4283 length = scsi_bufflen(scsi_cmd);
4284 if (!length)
1da177e4
LT		 4285 return 0;
4286
63015bc9
FT		 4287 nseg = scsi_dma_map(scsi_cmd);
4288 if (nseg < 0) {
4289 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4290 return -1;
4291 }
51b1c7e1 4292
63015bc9
FT		 4293 ipr_cmd->dma_use_sg = nseg;
4294
4295 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4296 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4297 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4298 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4299 ioarcb->write_ioadl_len =
4300 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4301 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4302 ioadl_flags = IPR_IOADL_FLAGS_READ;
4303 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4304 ioarcb->read_ioadl_len =
4305 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4306 }
1da177e4 4307
63015bc9
FT		 4308 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4309 ioadl = ioarcb->add_data.u.ioadl;
4310 ioarcb->write_ioadl_addr =
4311 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4312 offsetof(struct ipr_ioarcb, add_data));
4313 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4314 }
1da177e4 4315
63015bc9
FT		 4316 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4317 ioadl[i].flags_and_data_len =
4318 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4319 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4320 }
4321
63015bc9
FT		 4322 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4323 return 0;
1da177e4
LT		 4324}
4325
4326/**
4327 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4328 * @scsi_cmd: scsi command struct
4329 *
4330 * Return value:
4331 * task attributes
4332 **/
4333static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4334{
4335 u8 tag[2];
4336 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4337
4338 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4339 switch (tag[0]) {
4340 case MSG_SIMPLE_TAG:
4341 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4342 break;
4343 case MSG_HEAD_TAG:
4344 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4345 break;
4346 case MSG_ORDERED_TAG:
4347 rc = IPR_FLAGS_LO_ORDERED_TASK;
4348 break;
4349 };
4350 }
4351
4352 return rc;
4353}
4354
4355/**
4356 * ipr_erp_done - Process completion of ERP for a device
4357 * @ipr_cmd: ipr command struct
4358 *
4359 * This function copies the sense buffer into the scsi_cmd
4360 * struct and pushes the scsi_done function.
4361 *
4362 * Return value:
4363 * nothing
4364 **/
4365static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4366{
4367 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4368 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4369 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4370 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4371
4372 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4373 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4374 scmd_printk(KERN_ERR, scsi_cmd,
4375 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4376 } else {
4377 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4378 SCSI_SENSE_BUFFERSIZE);
4379 }
4380
4381 if (res) {
ee0a90fa 4382 if (!ipr_is_naca_model(res))
4383 res->needs_sync_complete = 1;
1da177e4
LT		 4384 res->in_erp = 0;
4385 }
63015bc9 4386 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4387 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4388 scsi_cmd->scsi_done(scsi_cmd);
4389}
4390
4391/**
4392 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4393 * @ipr_cmd: ipr command struct
4394 *
4395 * Return value:
4396 * none
4397 **/
4398static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4399{
51b1c7e1
BK		 4400 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4401 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4402 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4403
4404 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4405 ioarcb->write_data_transfer_length = 0;
4406 ioarcb->read_data_transfer_length = 0;
4407 ioarcb->write_ioadl_len = 0;
4408 ioarcb->read_ioadl_len = 0;
4409 ioasa->ioasc = 0;
4410 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4411 ioarcb->write_ioadl_addr =
4412 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4413 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4414}
4415
4416/**
4417 * ipr_erp_request_sense - Send request sense to a device
4418 * @ipr_cmd: ipr command struct
4419 *
4420 * This function sends a request sense to a device as a result
4421 * of a check condition.
4422 *
4423 * Return value:
4424 * nothing
4425 **/
4426static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4427{
4428 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4429 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4430
4431 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4432 ipr_erp_done(ipr_cmd);
4433 return;
4434 }
4435
4436 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4437
4438 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4439 cmd_pkt->cdb[0] = REQUEST_SENSE;
4440 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4441 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4442 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4443 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4444
4445 ipr_cmd->ioadl[0].flags_and_data_len =
4446 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4447 ipr_cmd->ioadl[0].address =
4448 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4449
4450 ipr_cmd->ioarcb.read_ioadl_len =
4451 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4452 ipr_cmd->ioarcb.read_data_transfer_length =
4453 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4454
4455 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4456 IPR_REQUEST_SENSE_TIMEOUT * 2);
4457}
4458
4459/**
4460 * ipr_erp_cancel_all - Send cancel all to a device
4461 * @ipr_cmd: ipr command struct
4462 *
4463 * This function sends a cancel all to a device to clear the
4464 * queue. If we are running TCQ on the device, QERR is set to 1,
4465 * which means all outstanding ops have been dropped on the floor.
4466 * Cancel all will return them to us.
4467 *
4468 * Return value:
4469 * nothing
4470 **/
4471static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4472{
4473 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4474 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4475 struct ipr_cmd_pkt *cmd_pkt;
4476
4477 res->in_erp = 1;
4478
4479 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4480
4481 if (!scsi_get_tag_type(scsi_cmd->device)) {
4482 ipr_erp_request_sense(ipr_cmd);
4483 return;
4484 }
4485
4486 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4487 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4488 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4489
4490 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4491 IPR_CANCEL_ALL_TIMEOUT);
4492}
4493
4494/**
4495 * ipr_dump_ioasa - Dump contents of IOASA
4496 * @ioa_cfg: ioa config struct
4497 * @ipr_cmd: ipr command struct
fe964d0a 4498 * @res: resource entry struct
1da177e4
LT		 4499 *
4500 * This function is invoked by the interrupt handler when ops
4501 * fail. It will log the IOASA if appropriate. Only called
4502 * for GPDD ops.
4503 *
4504 * Return value:
4505 * none
4506 **/
4507static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4508 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4509{
4510 int i;
4511 u16 data_len;
b0692dd4 4512 u32 ioasc, fd_ioasc;
1da177e4
LT		 4513 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4514 __be32 *ioasa_data = (__be32 *)ioasa;
4515 int error_index;
4516
4517 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4518 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4519
4520 if (0 == ioasc)
4521 return;
4522
4523 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4524 return;
4525
b0692dd4
BK		 4526 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4527 error_index = ipr_get_error(fd_ioasc);
4528 else
4529 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4530
4531 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4532 /* Don't log an error if the IOA already logged one */
4533 if (ioasa->ilid != 0)
4534 return;
4535
cc9bd5d4
BK		 4536 if (!ipr_is_gscsi(res))
4537 return;
4538
1da177e4
LT		 4539 if (ipr_error_table[error_index].log_ioasa == 0)
4540 return;
4541 }
4542
fe964d0a 4543 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4544
4545 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4546 data_len = sizeof(struct ipr_ioasa);
4547 else
4548 data_len = be16_to_cpu(ioasa->ret_stat_len);
4549
4550 ipr_err("IOASA Dump:\n");
4551
4552 for (i = 0; i < data_len / 4; i += 4) {
4553 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4554 be32_to_cpu(ioasa_data[i]),
4555 be32_to_cpu(ioasa_data[i+1]),
4556 be32_to_cpu(ioasa_data[i+2]),
4557 be32_to_cpu(ioasa_data[i+3]));
4558 }
4559}
4560
4561/**
4562 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4563 * @ioasa: IOASA
4564 * @sense_buf: sense data buffer
4565 *
4566 * Return value:
4567 * none
4568 **/
4569static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4570{
4571 u32 failing_lba;
4572 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4573 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4574 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4575 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4576
4577 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4578
4579 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4580 return;
4581
4582 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4583
4584 if (ipr_is_vset_device(res) &&
4585 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4586 ioasa->u.vset.failing_lba_hi != 0) {
4587 sense_buf[0] = 0x72;
4588 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4589 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4590 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4591
4592 sense_buf[7] = 12;
4593 sense_buf[8] = 0;
4594 sense_buf[9] = 0x0A;
4595 sense_buf[10] = 0x80;
4596
4597 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4598
4599 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4600 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4601 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4602 sense_buf[15] = failing_lba & 0x000000ff;
4603
4604 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4605
4606 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4607 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4608 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4609 sense_buf[19] = failing_lba & 0x000000ff;
4610 } else {
4611 sense_buf[0] = 0x70;
4612 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4613 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4614 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4615
4616 /* Illegal request */
4617 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4618 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4619 sense_buf[7] = 10; /* additional length */
4620
4621 /* IOARCB was in error */
4622 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4623 sense_buf[15] = 0xC0;
4624 else /* Parameter data was invalid */
4625 sense_buf[15] = 0x80;
4626
4627 sense_buf[16] =
4628 ((IPR_FIELD_POINTER_MASK &
4629 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4630 sense_buf[17] =
4631 (IPR_FIELD_POINTER_MASK &
4632 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4633 } else {
4634 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4635 if (ipr_is_vset_device(res))
4636 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4637 else
4638 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4639
4640 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4641 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4642 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4643 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4644 sense_buf[6] = failing_lba & 0x000000ff;
4645 }
4646
4647 sense_buf[7] = 6; /* additional length */
4648 }
4649 }
4650}
4651
ee0a90fa 4652/**
4653 * ipr_get_autosense - Copy autosense data to sense buffer
4654 * @ipr_cmd: ipr command struct
4655 *
4656 * This function copies the autosense buffer to the buffer
4657 * in the scsi_cmd, if there is autosense available.
4658 *
4659 * Return value:
4660 * 1 if autosense was available / 0 if not
4661 **/
4662static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4663{
4664 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4665
117d2ce1 4666 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa 4667 return 0;
4668
4669 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4670 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4671 SCSI_SENSE_BUFFERSIZE));
4672 return 1;
4673}
4674
1da177e4
LT		 4675/**
4676 * ipr_erp_start - Process an error response for a SCSI op
4677 * @ioa_cfg: ioa config struct
4678 * @ipr_cmd: ipr command struct
4679 *
4680 * This function determines whether or not to initiate ERP
4681 * on the affected device.
4682 *
4683 * Return value:
4684 * nothing
4685 **/
4686static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4687 struct ipr_cmnd *ipr_cmd)
4688{
4689 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4690 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4691 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4692 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4693
4694 if (!res) {
4695 ipr_scsi_eh_done(ipr_cmd);
4696 return;
4697 }
4698
8a048994 4699 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4700 ipr_gen_sense(ipr_cmd);
4701
cc9bd5d4
BK		 4702 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4703
8a048994 4704 switch (masked_ioasc) {
1da177e4 4705 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa 4706 if (ipr_is_naca_model(res))
4707 scsi_cmd->result |= (DID_ABORT << 16);
4708 else
4709 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4710 break;
4711 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4712 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4713 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4714 break;
4715 case IPR_IOASC_HW_SEL_TIMEOUT:
4716 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa 4717 if (!ipr_is_naca_model(res))
4718 res->needs_sync_complete = 1;
1da177e4
LT		 4719 break;
4720 case IPR_IOASC_SYNC_REQUIRED:
4721 if (!res->in_erp)
4722 res->needs_sync_complete = 1;
4723 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4724 break;
4725 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4726 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4727 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4728 break;
4729 case IPR_IOASC_BUS_WAS_RESET:
4730 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4731 /*
4732 * Report the bus reset and ask for a retry. The device
4733 * will give CC/UA the next command.
4734 */
4735 if (!res->resetting_device)
4736 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4737 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4738 if (!ipr_is_naca_model(res))
4739 res->needs_sync_complete = 1;
1da177e4
LT		 4740 break;
4741 case IPR_IOASC_HW_DEV_BUS_STATUS:
4742 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4743 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa 4744 if (!ipr_get_autosense(ipr_cmd)) {
4745 if (!ipr_is_naca_model(res)) {
4746 ipr_erp_cancel_all(ipr_cmd);
4747 return;
4748 }
4749 }
1da177e4 4750 }
ee0a90fa 4751 if (!ipr_is_naca_model(res))
4752 res->needs_sync_complete = 1;
1da177e4
LT		 4753 break;
4754 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4755 break;
4756 default:
5b7304fb
BK		 4757 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4758 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4759 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4760 res->needs_sync_complete = 1;
4761 break;
4762 }
4763
63015bc9 4764 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4765 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4766 scsi_cmd->scsi_done(scsi_cmd);
4767}
4768
4769/**
4770 * ipr_scsi_done - mid-layer done function
4771 * @ipr_cmd: ipr command struct
4772 *
4773 * This function is invoked by the interrupt handler for
4774 * ops generated by the SCSI mid-layer
4775 *
4776 * Return value:
4777 * none
4778 **/
4779static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4780{
4781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4782 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4783 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4784
63015bc9 4785 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4786
4787 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4788 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4789 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4790 scsi_cmd->scsi_done(scsi_cmd);
4791 } else
4792 ipr_erp_start(ioa_cfg, ipr_cmd);
4793}
4794
1da177e4
LT		 4795/**
4796 * ipr_queuecommand - Queue a mid-layer request
4797 * @scsi_cmd: scsi command struct
4798 * @done: done function
4799 *
4800 * This function queues a request generated by the mid-layer.
4801 *
4802 * Return value:
4803 * 0 on success
4804 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4805 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4806 **/
4807static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4808 void (*done) (struct scsi_cmnd *))
4809{
4810 struct ipr_ioa_cfg *ioa_cfg;
4811 struct ipr_resource_entry *res;
4812 struct ipr_ioarcb *ioarcb;
4813 struct ipr_cmnd *ipr_cmd;
4814 int rc = 0;
4815
4816 scsi_cmd->scsi_done = done;
4817 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4818 res = scsi_cmd->device->hostdata;
4819 scsi_cmd->result = (DID_OK << 16);
4820
4821 /*
4822 * We are currently blocking all devices due to a host reset
4823 * We have told the host to stop giving us new requests, but
4824 * ERP ops don't count. FIXME
4825 */
4826 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4827 return SCSI_MLQUEUE_HOST_BUSY;
4828
4829 /*
4830 * FIXME - Create scsi_set_host_offline interface
4831 * and the ioa_is_dead check can be removed
4832 */
4833 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4834 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4835 scsi_cmd->result = (DID_NO_CONNECT << 16);
4836 scsi_cmd->scsi_done(scsi_cmd);
4837 return 0;
4838 }
4839
35a39691
BK		 4840 if (ipr_is_gata(res) && res->sata_port)
4841 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4842
1da177e4
LT		 4843 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4844 ioarcb = &ipr_cmd->ioarcb;
4845 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4846
4847 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4848 ipr_cmd->scsi_cmd = scsi_cmd;
4849 ioarcb->res_handle = res->cfgte.res_handle;
4850 ipr_cmd->done = ipr_scsi_done;
4851 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4852
4853 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4854 if (scsi_cmd->underflow == 0)
4855 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4856
4857 if (res->needs_sync_complete) {
4858 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4859 res->needs_sync_complete = 0;
4860 }
4861
4862 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4863 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4864 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4865 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4866 }
4867
4868 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4869 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4870 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4871
1da177e4
LT		 4872 if (likely(rc == 0))
4873 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4874
4875 if (likely(rc == 0)) {
4876 mb();
4877 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4878 ioa_cfg->regs.ioarrin_reg);
4879 } else {
4880 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4881 return SCSI_MLQUEUE_HOST_BUSY;
4882 }
4883
4884 return 0;
4885}
4886
35a39691
BK		 4887/**
4888 * ipr_ioctl - IOCTL handler
4889 * @sdev: scsi device struct
4890 * @cmd: IOCTL cmd
4891 * @arg: IOCTL arg
4892 *
4893 * Return value:
4894 * 0 on success / other on failure
4895 **/
bd705f2d 4896static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4897{
4898 struct ipr_resource_entry *res;
4899
4900 res = (struct ipr_resource_entry *)sdev->hostdata;
4901 if (res && ipr_is_gata(res))
4902 return ata_scsi_ioctl(sdev, cmd, arg);
4903
4904 return -EINVAL;
4905}
4906
1da177e4
LT		 4907/**
4908 * ipr_info - Get information about the card/driver
4909 * @scsi_host: scsi host struct
4910 *
4911 * Return value:
4912 * pointer to buffer with description string
4913 **/
4914static const char * ipr_ioa_info(struct Scsi_Host *host)
4915{
4916 static char buffer[512];
4917 struct ipr_ioa_cfg *ioa_cfg;
4918 unsigned long lock_flags = 0;
4919
4920 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4921
4922 spin_lock_irqsave(host->host_lock, lock_flags);
4923 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4924 spin_unlock_irqrestore(host->host_lock, lock_flags);
4925
4926 return buffer;
4927}
4928
4929static struct scsi_host_template driver_template = {
4930 .module = THIS_MODULE,
4931 .name = "IPR",
4932 .info = ipr_ioa_info,
35a39691 4933 .ioctl = ipr_ioctl,
1da177e4
LT		 4934 .queuecommand = ipr_queuecommand,
4935 .eh_abort_handler = ipr_eh_abort,
4936 .eh_device_reset_handler = ipr_eh_dev_reset,
4937 .eh_host_reset_handler = ipr_eh_host_reset,
4938 .slave_alloc = ipr_slave_alloc,
4939 .slave_configure = ipr_slave_configure,
4940 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4941 .target_alloc = ipr_target_alloc,
4942 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4943 .change_queue_depth = ipr_change_queue_depth,
4944 .change_queue_type = ipr_change_queue_type,
4945 .bios_param = ipr_biosparam,
4946 .can_queue = IPR_MAX_COMMANDS,
4947 .this_id = -1,
4948 .sg_tablesize = IPR_MAX_SGLIST,
4949 .max_sectors = IPR_IOA_MAX_SECTORS,
4950 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4951 .use_clustering = ENABLE_CLUSTERING,
4952 .shost_attrs = ipr_ioa_attrs,
4953 .sdev_attrs = ipr_dev_attrs,
4954 .proc_name = IPR_NAME
4955};
4956
35a39691
BK		 4957/**
4958 * ipr_ata_phy_reset - libata phy_reset handler
4959 * @ap: ata port to reset
4960 *
4961 **/
4962static void ipr_ata_phy_reset(struct ata_port *ap)
4963{
4964 unsigned long flags;
4965 struct ipr_sata_port *sata_port = ap->private_data;
4966 struct ipr_resource_entry *res = sata_port->res;
4967 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4968 int rc;
4969
4970 ENTER;
4971 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4972 while(ioa_cfg->in_reset_reload) {
4973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4974 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4975 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4976 }
4977
4978 if (!ioa_cfg->allow_cmds)
4979 goto out_unlock;
4980
4981 rc = ipr_device_reset(ioa_cfg, res);
4982
4983 if (rc) {
4984 ap->ops->port_disable(ap);
4985 goto out_unlock;
4986 }
4987
4988 switch(res->cfgte.proto) {
4989 case IPR_PROTO_SATA:
4990 case IPR_PROTO_SAS_STP:
9af5c9c9 4991 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 4992 break;
4993 case IPR_PROTO_SATA_ATAPI:
4994 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 4995 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 4996 break;
4997 default:
9af5c9c9 4998 ap->link.device[0].class = ATA_DEV_UNKNOWN;
35a39691
BK		 4999 ap->ops->port_disable(ap);
5000 break;
5001 };
5002
5003out_unlock:
5004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5005 LEAVE;
5006}
5007
5008/**
5009 * ipr_ata_post_internal - Cleanup after an internal command
5010 * @qc: ATA queued command
5011 *
5012 * Return value:
5013 * none
5014 **/
5015static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5016{
5017 struct ipr_sata_port *sata_port = qc->ap->private_data;
5018 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5019 struct ipr_cmnd *ipr_cmd;
5020 unsigned long flags;
5021
5022 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5023 while(ioa_cfg->in_reset_reload) {
5024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5025 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5026 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5027 }
5028
35a39691
BK		 5029 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5030 if (ipr_cmd->qc == qc) {
5031 ipr_device_reset(ioa_cfg, sata_port->res);
5032 break;
5033 }
5034 }
5035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5036}
5037
5038/**
5039 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5040 * @ap: ATA port
5041 * @tf: destination ATA taskfile
5042 *
5043 * Return value:
5044 * none
5045 **/
5046static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5047{
5048 struct ipr_sata_port *sata_port = ap->private_data;
5049 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5050
5051 tf->feature = g->error;
5052 tf->nsect = g->nsect;
5053 tf->lbal = g->lbal;
5054 tf->lbam = g->lbam;
5055 tf->lbah = g->lbah;
5056 tf->device = g->device;
5057 tf->command = g->status;
5058 tf->hob_nsect = g->hob_nsect;
5059 tf->hob_lbal = g->hob_lbal;
5060 tf->hob_lbam = g->hob_lbam;
5061 tf->hob_lbah = g->hob_lbah;
5062 tf->ctl = g->alt_status;
5063}
5064
5065/**
5066 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5067 * @regs: destination
5068 * @tf: source ATA taskfile
5069 *
5070 * Return value:
5071 * none
5072 **/
5073static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5074 struct ata_taskfile *tf)
5075{
5076 regs->feature = tf->feature;
5077 regs->nsect = tf->nsect;
5078 regs->lbal = tf->lbal;
5079 regs->lbam = tf->lbam;
5080 regs->lbah = tf->lbah;
5081 regs->device = tf->device;
5082 regs->command = tf->command;
5083 regs->hob_feature = tf->hob_feature;
5084 regs->hob_nsect = tf->hob_nsect;
5085 regs->hob_lbal = tf->hob_lbal;
5086 regs->hob_lbam = tf->hob_lbam;
5087 regs->hob_lbah = tf->hob_lbah;
5088 regs->ctl = tf->ctl;
5089}
5090
5091/**
5092 * ipr_sata_done - done function for SATA commands
5093 * @ipr_cmd: ipr command struct
5094 *
5095 * This function is invoked by the interrupt handler for
5096 * ops generated by the SCSI mid-layer to SATA devices
5097 *
5098 * Return value:
5099 * none
5100 **/
5101static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5102{
5103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5104 struct ata_queued_cmd *qc = ipr_cmd->qc;
5105 struct ipr_sata_port *sata_port = qc->ap->private_data;
5106 struct ipr_resource_entry *res = sata_port->res;
5107 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5108
5109 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5110 sizeof(struct ipr_ioasa_gata));
5111 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5112
5113 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5114 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5115 res->cfgte.res_addr.target);
5116
5117 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5118 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5119 else
5120 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5121 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5122 ata_qc_complete(qc);
5123}
5124
5125/**
5126 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5127 * @ipr_cmd: ipr command struct
5128 * @qc: ATA queued command
5129 *
5130 **/
5131static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5132 struct ata_queued_cmd *qc)
5133{
5134 u32 ioadl_flags = 0;
5135 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5136 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5137 int len = qc->nbytes + qc->pad_len;
5138 struct scatterlist *sg;
5139
5140 if (len == 0)
5141 return;
5142
5143 if (qc->dma_dir == DMA_TO_DEVICE) {
5144 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5146 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5147 ioarcb->write_ioadl_len =
5148 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5149 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5150 ioadl_flags = IPR_IOADL_FLAGS_READ;
5151 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5152 ioarcb->read_ioadl_len =
5153 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5154 }
5155
5156 ata_for_each_sg(sg, qc) {
5157 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5158 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5159 if (ata_sg_is_last(sg, qc))
5160 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5161 else
5162 ioadl++;
5163 }
5164}
5165
5166/**
5167 * ipr_qc_issue - Issue a SATA qc to a device
5168 * @qc: queued command
5169 *
5170 * Return value:
5171 * 0 if success
5172 **/
5173static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5174{
5175 struct ata_port *ap = qc->ap;
5176 struct ipr_sata_port *sata_port = ap->private_data;
5177 struct ipr_resource_entry *res = sata_port->res;
5178 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5179 struct ipr_cmnd *ipr_cmd;
5180 struct ipr_ioarcb *ioarcb;
5181 struct ipr_ioarcb_ata_regs *regs;
5182
5183 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5184 return AC_ERR_SYSTEM;
35a39691
BK		 5185
5186 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5187 ioarcb = &ipr_cmd->ioarcb;
5188 regs = &ioarcb->add_data.u.regs;
5189
5190 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5191 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5192
5193 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5194 ipr_cmd->qc = qc;
5195 ipr_cmd->done = ipr_sata_done;
5196 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5197 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5198 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5199 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5200 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5201
5202 ipr_build_ata_ioadl(ipr_cmd, qc);
5203 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5204 ipr_copy_sata_tf(regs, &qc->tf);
5205 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5206 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5207
5208 switch (qc->tf.protocol) {
5209 case ATA_PROT_NODATA:
5210 case ATA_PROT_PIO:
5211 break;
5212
5213 case ATA_PROT_DMA:
5214 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5215 break;
5216
5217 case ATA_PROT_ATAPI:
5218 case ATA_PROT_ATAPI_NODATA:
5219 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5220 break;
5221
5222 case ATA_PROT_ATAPI_DMA:
5223 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5224 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5225 break;
5226
5227 default:
5228 WARN_ON(1);
0feeed82 5229 return AC_ERR_INVALID;
35a39691
BK		 5230 }
5231
5232 mb();
5233 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5234 ioa_cfg->regs.ioarrin_reg);
5235 return 0;
5236}
5237
5238/**
5239 * ipr_ata_check_status - Return last ATA status
5240 * @ap: ATA port
5241 *
5242 * Return value:
5243 * ATA status
5244 **/
5245static u8 ipr_ata_check_status(struct ata_port *ap)
5246{
5247 struct ipr_sata_port *sata_port = ap->private_data;
5248 return sata_port->ioasa.status;
5249}
5250
5251/**
5252 * ipr_ata_check_altstatus - Return last ATA altstatus
5253 * @ap: ATA port
5254 *
5255 * Return value:
5256 * Alt ATA status
5257 **/
5258static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5259{
5260 struct ipr_sata_port *sata_port = ap->private_data;
5261 return sata_port->ioasa.alt_status;
5262}
5263
5264static struct ata_port_operations ipr_sata_ops = {
5265 .port_disable = ata_port_disable,
5266 .check_status = ipr_ata_check_status,
5267 .check_altstatus = ipr_ata_check_altstatus,
5268 .dev_select = ata_noop_dev_select,
5269 .phy_reset = ipr_ata_phy_reset,
5270 .post_internal_cmd = ipr_ata_post_internal,
5271 .tf_read = ipr_tf_read,
5272 .qc_prep = ata_noop_qc_prep,
5273 .qc_issue = ipr_qc_issue,
5274 .port_start = ata_sas_port_start,
5275 .port_stop = ata_sas_port_stop
5276};
5277
5278static struct ata_port_info sata_port_info = {
5279 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5280 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5281 .pio_mask = 0x10, /* pio4 */
5282 .mwdma_mask = 0x07,
5283 .udma_mask = 0x7f, /* udma0-6 */
5284 .port_ops = &ipr_sata_ops
5285};
5286
1da177e4
LT		 5287#ifdef CONFIG_PPC_PSERIES
5288static const u16 ipr_blocked_processors[] = {
5289 PV_NORTHSTAR,
5290 PV_PULSAR,
5291 PV_POWER4,
5292 PV_ICESTAR,
5293 PV_SSTAR,
5294 PV_POWER4p,
5295 PV_630,
5296 PV_630p
5297};
5298
5299/**
5300 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5301 * @ioa_cfg: ioa cfg struct
5302 *
5303 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5304 * certain pSeries hardware. This function determines if the given
5305 * adapter is in one of these confgurations or not.
5306 *
5307 * Return value:
5308 * 1 if adapter is not supported / 0 if adapter is supported
5309 **/
5310static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5311{
1da177e4
LT		 5312 int i;
5313
44c10138
AK		 5314 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5315 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5316 if (__is_processor(ipr_blocked_processors[i]))
5317 return 1;
1da177e4
LT		 5318 }
5319 }
5320 return 0;
5321}
5322#else
5323#define ipr_invalid_adapter(ioa_cfg) 0
5324#endif
5325
5326/**
5327 * ipr_ioa_bringdown_done - IOA bring down completion.
5328 * @ipr_cmd: ipr command struct
5329 *
5330 * This function processes the completion of an adapter bring down.
5331 * It wakes any reset sleepers.
5332 *
5333 * Return value:
5334 * IPR_RC_JOB_RETURN
5335 **/
5336static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5337{
5338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5339
5340 ENTER;
5341 ioa_cfg->in_reset_reload = 0;
5342 ioa_cfg->reset_retries = 0;
5343 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5344 wake_up_all(&ioa_cfg->reset_wait_q);
5345
5346 spin_unlock_irq(ioa_cfg->host->host_lock);
5347 scsi_unblock_requests(ioa_cfg->host);
5348 spin_lock_irq(ioa_cfg->host->host_lock);
5349 LEAVE;
5350
5351 return IPR_RC_JOB_RETURN;
5352}
5353
5354/**
5355 * ipr_ioa_reset_done - IOA reset completion.
5356 * @ipr_cmd: ipr command struct
5357 *
5358 * This function processes the completion of an adapter reset.
5359 * It schedules any necessary mid-layer add/removes and
5360 * wakes any reset sleepers.
5361 *
5362 * Return value:
5363 * IPR_RC_JOB_RETURN
5364 **/
5365static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5366{
5367 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5368 struct ipr_resource_entry *res;
5369 struct ipr_hostrcb *hostrcb, *temp;
5370 int i = 0;
5371
5372 ENTER;
5373 ioa_cfg->in_reset_reload = 0;
5374 ioa_cfg->allow_cmds = 1;
5375 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5376 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5377
5378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5379 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5380 ipr_trace;
5381 break;
5382 }
5383 }
5384 schedule_work(&ioa_cfg->work_q);
5385
5386 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5387 list_del(&hostrcb->queue);
5388 if (i++ < IPR_NUM_LOG_HCAMS)
5389 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5390 else
5391 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5392 }
5393
6bb04170 5394 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5395 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5396
5397 ioa_cfg->reset_retries = 0;
5398 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5399 wake_up_all(&ioa_cfg->reset_wait_q);
5400
5401 spin_unlock_irq(ioa_cfg->host->host_lock);
5402 scsi_unblock_requests(ioa_cfg->host);
5403 spin_lock_irq(ioa_cfg->host->host_lock);
5404
5405 if (!ioa_cfg->allow_cmds)
5406 scsi_block_requests(ioa_cfg->host);
5407
5408 LEAVE;
5409 return IPR_RC_JOB_RETURN;
5410}
5411
5412/**
5413 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5414 * @supported_dev: supported device struct
5415 * @vpids: vendor product id struct
5416 *
5417 * Return value:
5418 * none
5419 **/
5420static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5421 struct ipr_std_inq_vpids *vpids)
5422{
5423 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5424 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5425 supported_dev->num_records = 1;
5426 supported_dev->data_length =
5427 cpu_to_be16(sizeof(struct ipr_supported_device));
5428 supported_dev->reserved = 0;
5429}
5430
5431/**
5432 * ipr_set_supported_devs - Send Set Supported Devices for a device
5433 * @ipr_cmd: ipr command struct
5434 *
5435 * This function send a Set Supported Devices to the adapter
5436 *
5437 * Return value:
5438 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5439 **/
5440static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5441{
5442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5443 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5444 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5445 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5446 struct ipr_resource_entry *res = ipr_cmd->u.res;
5447
5448 ipr_cmd->job_step = ipr_ioa_reset_done;
5449
5450 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5451 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5452 continue;
5453
5454 ipr_cmd->u.res = res;
5455 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5456
5457 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5458 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5459 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5460
5461 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5462 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5463 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5464
5465 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5466 sizeof(struct ipr_supported_device));
5467 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5468 offsetof(struct ipr_misc_cbs, supp_dev));
5469 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5470 ioarcb->write_data_transfer_length =
5471 cpu_to_be32(sizeof(struct ipr_supported_device));
5472
5473 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5474 IPR_SET_SUP_DEVICE_TIMEOUT);
5475
5476 ipr_cmd->job_step = ipr_set_supported_devs;
5477 return IPR_RC_JOB_RETURN;
5478 }
5479
5480 return IPR_RC_JOB_CONTINUE;
5481}
5482
62275040 5483/**
5484 * ipr_setup_write_cache - Disable write cache if needed
5485 * @ipr_cmd: ipr command struct
5486 *
5487 * This function sets up adapters write cache to desired setting
5488 *
5489 * Return value:
5490 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5491 **/
5492static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5493{
5494 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5495
5496 ipr_cmd->job_step = ipr_set_supported_devs;
5497 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5498 struct ipr_resource_entry, queue);
5499
5500 if (ioa_cfg->cache_state != CACHE_DISABLED)
5501 return IPR_RC_JOB_CONTINUE;
5502
5503 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5504 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5505 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5506 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5507
5508 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5509
5510 return IPR_RC_JOB_RETURN;
5511}
5512
1da177e4
LT		 5513/**
5514 * ipr_get_mode_page - Locate specified mode page
5515 * @mode_pages: mode page buffer
5516 * @page_code: page code to find
5517 * @len: minimum required length for mode page
5518 *
5519 * Return value:
5520 * pointer to mode page / NULL on failure
5521 **/
5522static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5523 u32 page_code, u32 len)
5524{
5525 struct ipr_mode_page_hdr *mode_hdr;
5526 u32 page_length;
5527 u32 length;
5528
5529 if (!mode_pages || (mode_pages->hdr.length == 0))
5530 return NULL;
5531
5532 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5533 mode_hdr = (struct ipr_mode_page_hdr *)
5534 (mode_pages->data + mode_pages->hdr.block_desc_len);
5535
5536 while (length) {
5537 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5538 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5539 return mode_hdr;
5540 break;
5541 } else {
5542 page_length = (sizeof(struct ipr_mode_page_hdr) +
5543 mode_hdr->page_length);
5544 length -= page_length;
5545 mode_hdr = (struct ipr_mode_page_hdr *)
5546 ((unsigned long)mode_hdr + page_length);
5547 }
5548 }
5549 return NULL;
5550}
5551
5552/**
5553 * ipr_check_term_power - Check for term power errors
5554 * @ioa_cfg: ioa config struct
5555 * @mode_pages: IOAFP mode pages buffer
5556 *
5557 * Check the IOAFP's mode page 28 for term power errors
5558 *
5559 * Return value:
5560 * nothing
5561 **/
5562static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5563 struct ipr_mode_pages *mode_pages)
5564{
5565 int i;
5566 int entry_length;
5567 struct ipr_dev_bus_entry *bus;
5568 struct ipr_mode_page28 *mode_page;
5569
5570 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5571 sizeof(struct ipr_mode_page28));
5572
5573 entry_length = mode_page->entry_length;
5574
5575 bus = mode_page->bus;
5576
5577 for (i = 0; i < mode_page->num_entries; i++) {
5578 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5579 dev_err(&ioa_cfg->pdev->dev,
5580 "Term power is absent on scsi bus %d\n",
5581 bus->res_addr.bus);
5582 }
5583
5584 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5585 }
5586}
5587
5588/**
5589 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5590 * @ioa_cfg: ioa config struct
5591 *
5592 * Looks through the config table checking for SES devices. If
5593 * the SES device is in the SES table indicating a maximum SCSI
5594 * bus speed, the speed is limited for the bus.
5595 *
5596 * Return value:
5597 * none
5598 **/
5599static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5600{
5601 u32 max_xfer_rate;
5602 int i;
5603
5604 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5605 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5606 ioa_cfg->bus_attr[i].bus_width);
5607
5608 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5609 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5610 }
5611}
5612
5613/**
5614 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5615 * @ioa_cfg: ioa config struct
5616 * @mode_pages: mode page 28 buffer
5617 *
5618 * Updates mode page 28 based on driver configuration
5619 *
5620 * Return value:
5621 * none
5622 **/
5623static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5624 struct ipr_mode_pages *mode_pages)
5625{
5626 int i, entry_length;
5627 struct ipr_dev_bus_entry *bus;
5628 struct ipr_bus_attributes *bus_attr;
5629 struct ipr_mode_page28 *mode_page;
5630
5631 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5632 sizeof(struct ipr_mode_page28));
5633
5634 entry_length = mode_page->entry_length;
5635
5636 /* Loop for each device bus entry */
5637 for (i = 0, bus = mode_page->bus;
5638 i < mode_page->num_entries;
5639 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5640 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5641 dev_err(&ioa_cfg->pdev->dev,
5642 "Invalid resource address reported: 0x%08X\n",
5643 IPR_GET_PHYS_LOC(bus->res_addr));
5644 continue;
5645 }
5646
5647 bus_attr = &ioa_cfg->bus_attr[i];
5648 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5649 bus->bus_width = bus_attr->bus_width;
5650 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5651 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5652 if (bus_attr->qas_enabled)
5653 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5654 else
5655 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5656 }
5657}
5658
5659/**
5660 * ipr_build_mode_select - Build a mode select command
5661 * @ipr_cmd: ipr command struct
5662 * @res_handle: resource handle to send command to
5663 * @parm: Byte 2 of Mode Sense command
5664 * @dma_addr: DMA buffer address
5665 * @xfer_len: data transfer length
5666 *
5667 * Return value:
5668 * none
5669 **/
5670static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5671 __be32 res_handle, u8 parm, u32 dma_addr,
5672 u8 xfer_len)
5673{
5674 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5675 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5676
5677 ioarcb->res_handle = res_handle;
5678 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5679 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5680 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5681 ioarcb->cmd_pkt.cdb[1] = parm;
5682 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5683
5684 ioadl->flags_and_data_len =
5685 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5686 ioadl->address = cpu_to_be32(dma_addr);
5687 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5688 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5689}
5690
5691/**
5692 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5693 * @ipr_cmd: ipr command struct
5694 *
5695 * This function sets up the SCSI bus attributes and sends
5696 * a Mode Select for Page 28 to activate them.
5697 *
5698 * Return value:
5699 * IPR_RC_JOB_RETURN
5700 **/
5701static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5702{
5703 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5704 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5705 int length;
5706
5707 ENTER;
4733804c
BK		 5708 ipr_scsi_bus_speed_limit(ioa_cfg);
5709 ipr_check_term_power(ioa_cfg, mode_pages);
5710 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5711 length = mode_pages->hdr.length + 1;
5712 mode_pages->hdr.length = 0;
1da177e4
LT		 5713
5714 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5715 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5716 length);
5717
62275040 5718 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5719 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5720
5721 LEAVE;
5722 return IPR_RC_JOB_RETURN;
5723}
5724
5725/**
5726 * ipr_build_mode_sense - Builds a mode sense command
5727 * @ipr_cmd: ipr command struct
5728 * @res: resource entry struct
5729 * @parm: Byte 2 of mode sense command
5730 * @dma_addr: DMA address of mode sense buffer
5731 * @xfer_len: Size of DMA buffer
5732 *
5733 * Return value:
5734 * none
5735 **/
5736static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5737 __be32 res_handle,
5738 u8 parm, u32 dma_addr, u8 xfer_len)
5739{
5740 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5741 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5742
5743 ioarcb->res_handle = res_handle;
5744 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5745 ioarcb->cmd_pkt.cdb[2] = parm;
5746 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5747 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5748
5749 ioadl->flags_and_data_len =
5750 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5751 ioadl->address = cpu_to_be32(dma_addr);
5752 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5753 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5754}
5755
dfed823e 5756/**
5757 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5758 * @ipr_cmd: ipr command struct
5759 *
5760 * This function handles the failure of an IOA bringup command.
5761 *
5762 * Return value:
5763 * IPR_RC_JOB_RETURN
5764 **/
5765static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5766{
5767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5768 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5769
5770 dev_err(&ioa_cfg->pdev->dev,
5771 "0x%02X failed with IOASC: 0x%08X\n",
5772 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5773
5774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5775 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5776 return IPR_RC_JOB_RETURN;
5777}
5778
5779/**
5780 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5781 * @ipr_cmd: ipr command struct
5782 *
5783 * This function handles the failure of a Mode Sense to the IOAFP.
5784 * Some adapters do not handle all mode pages.
5785 *
5786 * Return value:
5787 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5788 **/
5789static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5790{
5791 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5792
5793 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5794 ipr_cmd->job_step = ipr_setup_write_cache;
5795 return IPR_RC_JOB_CONTINUE;
5796 }
5797
5798 return ipr_reset_cmd_failed(ipr_cmd);
5799}
5800
1da177e4
LT		 5801/**
5802 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5803 * @ipr_cmd: ipr command struct
5804 *
5805 * This function send a Page 28 mode sense to the IOA to
5806 * retrieve SCSI bus attributes.
5807 *
5808 * Return value:
5809 * IPR_RC_JOB_RETURN
5810 **/
5811static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5812{
5813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5814
5815 ENTER;
5816 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5817 0x28, ioa_cfg->vpd_cbs_dma +
5818 offsetof(struct ipr_misc_cbs, mode_pages),
5819 sizeof(struct ipr_mode_pages));
5820
5821 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5822 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5823
5824 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5825
5826 LEAVE;
5827 return IPR_RC_JOB_RETURN;
5828}
5829
ac09c349
BK		 5830/**
5831 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5832 * @ipr_cmd: ipr command struct
5833 *
5834 * This function enables dual IOA RAID support if possible.
5835 *
5836 * Return value:
5837 * IPR_RC_JOB_RETURN
5838 **/
5839static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5840{
5841 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5842 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5843 struct ipr_mode_page24 *mode_page;
5844 int length;
5845
5846 ENTER;
5847 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5848 sizeof(struct ipr_mode_page24));
5849
5850 if (mode_page)
5851 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5852
5853 length = mode_pages->hdr.length + 1;
5854 mode_pages->hdr.length = 0;
5855
5856 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5857 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5858 length);
5859
5860 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5861 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5862
5863 LEAVE;
5864 return IPR_RC_JOB_RETURN;
5865}
5866
5867/**
5868 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5869 * @ipr_cmd: ipr command struct
5870 *
5871 * This function handles the failure of a Mode Sense to the IOAFP.
5872 * Some adapters do not handle all mode pages.
5873 *
5874 * Return value:
5875 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5876 **/
5877static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5878{
5879 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5880
5881 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5882 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5883 return IPR_RC_JOB_CONTINUE;
5884 }
5885
5886 return ipr_reset_cmd_failed(ipr_cmd);
5887}
5888
5889/**
5890 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5891 * @ipr_cmd: ipr command struct
5892 *
5893 * This function send a mode sense to the IOA to retrieve
5894 * the IOA Advanced Function Control mode page.
5895 *
5896 * Return value:
5897 * IPR_RC_JOB_RETURN
5898 **/
5899static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5900{
5901 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5902
5903 ENTER;
5904 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5905 0x24, ioa_cfg->vpd_cbs_dma +
5906 offsetof(struct ipr_misc_cbs, mode_pages),
5907 sizeof(struct ipr_mode_pages));
5908
5909 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5910 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5911
5912 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5913
5914 LEAVE;
5915 return IPR_RC_JOB_RETURN;
5916}
5917
1da177e4
LT		 5918/**
5919 * ipr_init_res_table - Initialize the resource table
5920 * @ipr_cmd: ipr command struct
5921 *
5922 * This function looks through the existing resource table, comparing
5923 * it with the config table. This function will take care of old/new
5924 * devices and schedule adding/removing them from the mid-layer
5925 * as appropriate.
5926 *
5927 * Return value:
5928 * IPR_RC_JOB_CONTINUE
5929 **/
5930static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5931{
5932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5933 struct ipr_resource_entry *res, *temp;
5934 struct ipr_config_table_entry *cfgte;
5935 int found, i;
5936 LIST_HEAD(old_res);
5937
5938 ENTER;
5939 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5940 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5941
5942 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5943 list_move_tail(&res->queue, &old_res);
5944
5945 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5946 cfgte = &ioa_cfg->cfg_table->dev[i];
5947 found = 0;
5948
5949 list_for_each_entry_safe(res, temp, &old_res, queue) {
5950 if (!memcmp(&res->cfgte.res_addr,
5951 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5952 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5953 found = 1;
5954 break;
5955 }
5956 }
5957
5958 if (!found) {
5959 if (list_empty(&ioa_cfg->free_res_q)) {
5960 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5961 break;
5962 }
5963
5964 found = 1;
5965 res = list_entry(ioa_cfg->free_res_q.next,
5966 struct ipr_resource_entry, queue);
5967 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5968 ipr_init_res_entry(res);
5969 res->add_to_ml = 1;
5970 }
5971
5972 if (found)
5973 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5974 }
5975
5976 list_for_each_entry_safe(res, temp, &old_res, queue) {
5977 if (res->sdev) {
5978 res->del_from_ml = 1;
1121b794 5979 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5980 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5981 } else {
5982 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5983 }
5984 }
5985
ac09c349
BK		 5986 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5987 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5988 else
5989 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5990
5991 LEAVE;
5992 return IPR_RC_JOB_CONTINUE;
5993}
5994
5995/**
5996 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5997 * @ipr_cmd: ipr command struct
5998 *
5999 * This function sends a Query IOA Configuration command
6000 * to the adapter to retrieve the IOA configuration table.
6001 *
6002 * Return value:
6003 * IPR_RC_JOB_RETURN
6004 **/
6005static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6006{
6007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6008 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6009 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6010 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6011 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6012
6013 ENTER;
ac09c349
BK		 6014 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6015 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6016 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6017 ucode_vpd->major_release, ucode_vpd->card_type,
6018 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6019 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6020 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6021
6022 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6023 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6024 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6025
6026 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6027 ioarcb->read_data_transfer_length =
6028 cpu_to_be32(sizeof(struct ipr_config_table));
6029
6030 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6031 ioadl->flags_and_data_len =
6032 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6033
6034 ipr_cmd->job_step = ipr_init_res_table;
6035
6036 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6037
6038 LEAVE;
6039 return IPR_RC_JOB_RETURN;
6040}
6041
6042/**
6043 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6044 * @ipr_cmd: ipr command struct
6045 *
6046 * This utility function sends an inquiry to the adapter.
6047 *
6048 * Return value:
6049 * none
6050 **/
6051static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6052 u32 dma_addr, u8 xfer_len)
6053{
6054 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6055 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6056
6057 ENTER;
6058 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6059 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6060
6061 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6062 ioarcb->cmd_pkt.cdb[1] = flags;
6063 ioarcb->cmd_pkt.cdb[2] = page;
6064 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6065
6066 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6067 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6068
6069 ioadl->address = cpu_to_be32(dma_addr);
6070 ioadl->flags_and_data_len =
6071 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6072
6073 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6074 LEAVE;
6075}
6076
62275040 6077/**
6078 * ipr_inquiry_page_supported - Is the given inquiry page supported
6079 * @page0: inquiry page 0 buffer
6080 * @page: page code.
6081 *
6082 * This function determines if the specified inquiry page is supported.
6083 *
6084 * Return value:
6085 * 1 if page is supported / 0 if not
6086 **/
6087static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6088{
6089 int i;
6090
6091 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6092 if (page0->page[i] == page)
6093 return 1;
6094
6095 return 0;
6096}
6097
ac09c349
BK		 6098/**
6099 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6100 * @ipr_cmd: ipr command struct
6101 *
6102 * This function sends a Page 0xD0 inquiry to the adapter
6103 * to retrieve adapter capabilities.
6104 *
6105 * Return value:
6106 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6107 **/
6108static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6109{
6110 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6111 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6112 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6113
6114 ENTER;
6115 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6116 memset(cap, 0, sizeof(*cap));
6117
6118 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6119 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6120 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6121 sizeof(struct ipr_inquiry_cap));
6122 return IPR_RC_JOB_RETURN;
6123 }
6124
6125 LEAVE;
6126 return IPR_RC_JOB_CONTINUE;
6127}
6128
1da177e4
LT		 6129/**
6130 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6131 * @ipr_cmd: ipr command struct
6132 *
6133 * This function sends a Page 3 inquiry to the adapter
6134 * to retrieve software VPD information.
6135 *
6136 * Return value:
6137 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6138 **/
6139static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040 6140{
6141 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6142 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6143
6144 ENTER;
6145
6146 if (!ipr_inquiry_page_supported(page0, 1))
6147 ioa_cfg->cache_state = CACHE_NONE;
6148
ac09c349 6149 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040 6150
6151 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6152 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6153 sizeof(struct ipr_inquiry_page3));
6154
6155 LEAVE;
6156 return IPR_RC_JOB_RETURN;
6157}
6158
6159/**
6160 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6161 * @ipr_cmd: ipr command struct
6162 *
6163 * This function sends a Page 0 inquiry to the adapter
6164 * to retrieve supported inquiry pages.
6165 *
6166 * Return value:
6167 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6168 **/
6169static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6170{
6171 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6172 char type[5];
6173
6174 ENTER;
6175
6176 /* Grab the type out of the VPD and store it away */
6177 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6178 type[4] = '\0';
6179 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6180
62275040 6181 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6182
62275040 6183 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6184 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6185 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6186
6187 LEAVE;
6188 return IPR_RC_JOB_RETURN;
6189}
6190
6191/**
6192 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6193 * @ipr_cmd: ipr command struct
6194 *
6195 * This function sends a standard inquiry to the adapter.
6196 *
6197 * Return value:
6198 * IPR_RC_JOB_RETURN
6199 **/
6200static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6201{
6202 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6203
6204 ENTER;
62275040 6205 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6206
6207 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6208 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6209 sizeof(struct ipr_ioa_vpd));
6210
6211 LEAVE;
6212 return IPR_RC_JOB_RETURN;
6213}
6214
6215/**
6216 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6217 * @ipr_cmd: ipr command struct
6218 *
6219 * This function send an Identify Host Request Response Queue
6220 * command to establish the HRRQ with the adapter.
6221 *
6222 * Return value:
6223 * IPR_RC_JOB_RETURN
6224 **/
6225static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6226{
6227 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6228 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6229
6230 ENTER;
6231 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6232
6233 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6234 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6235
6236 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6237 ioarcb->cmd_pkt.cdb[2] =
6238 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6239 ioarcb->cmd_pkt.cdb[3] =
6240 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6241 ioarcb->cmd_pkt.cdb[4] =
6242 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6243 ioarcb->cmd_pkt.cdb[5] =
6244 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6245 ioarcb->cmd_pkt.cdb[7] =
6246 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6247 ioarcb->cmd_pkt.cdb[8] =
6248 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6249
6250 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6251
6252 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6253
6254 LEAVE;
6255 return IPR_RC_JOB_RETURN;
6256}
6257
6258/**
6259 * ipr_reset_timer_done - Adapter reset timer function
6260 * @ipr_cmd: ipr command struct
6261 *
6262 * Description: This function is used in adapter reset processing
6263 * for timing events. If the reset_cmd pointer in the IOA
6264 * config struct is not this adapter's we are doing nested
6265 * resets and fail_all_ops will take care of freeing the
6266 * command block.
6267 *
6268 * Return value:
6269 * none
6270 **/
6271static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6272{
6273 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6274 unsigned long lock_flags = 0;
6275
6276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6277
6278 if (ioa_cfg->reset_cmd == ipr_cmd) {
6279 list_del(&ipr_cmd->queue);
6280 ipr_cmd->done(ipr_cmd);
6281 }
6282
6283 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6284}
6285
6286/**
6287 * ipr_reset_start_timer - Start a timer for adapter reset job
6288 * @ipr_cmd: ipr command struct
6289 * @timeout: timeout value
6290 *
6291 * Description: This function is used in adapter reset processing
6292 * for timing events. If the reset_cmd pointer in the IOA
6293 * config struct is not this adapter's we are doing nested
6294 * resets and fail_all_ops will take care of freeing the
6295 * command block.
6296 *
6297 * Return value:
6298 * none
6299 **/
6300static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6301 unsigned long timeout)
6302{
6303 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6304 ipr_cmd->done = ipr_reset_ioa_job;
6305
6306 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6307 ipr_cmd->timer.expires = jiffies + timeout;
6308 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6309 add_timer(&ipr_cmd->timer);
6310}
6311
6312/**
6313 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6314 * @ioa_cfg: ioa cfg struct
6315 *
6316 * Return value:
6317 * nothing
6318 **/
6319static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6320{
6321 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6322
6323 /* Initialize Host RRQ pointers */
6324 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6325 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6326 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6327 ioa_cfg->toggle_bit = 1;
6328
6329 /* Zero out config table */
6330 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6331}
6332
6333/**
6334 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6335 * @ipr_cmd: ipr command struct
6336 *
6337 * This function reinitializes some control blocks and
6338 * enables destructive diagnostics on the adapter.
6339 *
6340 * Return value:
6341 * IPR_RC_JOB_RETURN
6342 **/
6343static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6344{
6345 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6346 volatile u32 int_reg;
6347
6348 ENTER;
6349 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6350 ipr_init_ioa_mem(ioa_cfg);
6351
6352 ioa_cfg->allow_interrupts = 1;
6353 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6354
6355 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6356 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6357 ioa_cfg->regs.clr_interrupt_mask_reg);
6358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6359 return IPR_RC_JOB_CONTINUE;
6360 }
6361
6362 /* Enable destructive diagnostics on IOA */
3d1d0da6 6363 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6364
6365 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6366 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6367
6368 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6369
6370 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6371 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6372 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6373 ipr_cmd->done = ipr_reset_ioa_job;
6374 add_timer(&ipr_cmd->timer);
6375 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6376
6377 LEAVE;
6378 return IPR_RC_JOB_RETURN;
6379}
6380
6381/**
6382 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6383 * @ipr_cmd: ipr command struct
6384 *
6385 * This function is invoked when an adapter dump has run out
6386 * of processing time.
6387 *
6388 * Return value:
6389 * IPR_RC_JOB_CONTINUE
6390 **/
6391static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6392{
6393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6394
6395 if (ioa_cfg->sdt_state == GET_DUMP)
6396 ioa_cfg->sdt_state = ABORT_DUMP;
6397
6398 ipr_cmd->job_step = ipr_reset_alert;
6399
6400 return IPR_RC_JOB_CONTINUE;
6401}
6402
6403/**
6404 * ipr_unit_check_no_data - Log a unit check/no data error log
6405 * @ioa_cfg: ioa config struct
6406 *
6407 * Logs an error indicating the adapter unit checked, but for some
6408 * reason, we were unable to fetch the unit check buffer.
6409 *
6410 * Return value:
6411 * nothing
6412 **/
6413static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6414{
6415 ioa_cfg->errors_logged++;
6416 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6417}
6418
6419/**
6420 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6421 * @ioa_cfg: ioa config struct
6422 *
6423 * Fetches the unit check buffer from the adapter by clocking the data
6424 * through the mailbox register.
6425 *
6426 * Return value:
6427 * nothing
6428 **/
6429static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6430{
6431 unsigned long mailbox;
6432 struct ipr_hostrcb *hostrcb;
6433 struct ipr_uc_sdt sdt;
6434 int rc, length;
65f56475 6435 u32 ioasc;
1da177e4
LT		 6436
6437 mailbox = readl(ioa_cfg->ioa_mailbox);
6438
6439 if (!ipr_sdt_is_fmt2(mailbox)) {
6440 ipr_unit_check_no_data(ioa_cfg);
6441 return;
6442 }
6443
6444 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6445 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6446 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6447
6448 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6449 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6450 ipr_unit_check_no_data(ioa_cfg);
6451 return;
6452 }
6453
6454 /* Find length of the first sdt entry (UC buffer) */
6455 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6456 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6457
6458 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6459 struct ipr_hostrcb, queue);
6460 list_del(&hostrcb->queue);
6461 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6462
6463 rc = ipr_get_ldump_data_section(ioa_cfg,
6464 be32_to_cpu(sdt.entry[0].bar_str_offset),
6465 (__be32 *)&hostrcb->hcam,
6466 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6467
65f56475 6468 if (!rc) {
1da177e4 6469 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6471 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6472 ioa_cfg->sdt_state == GET_DUMP)
6473 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6474 } else
1da177e4
LT		 6475 ipr_unit_check_no_data(ioa_cfg);
6476
6477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6478}
6479
6480/**
6481 * ipr_reset_restore_cfg_space - Restore PCI config space.
6482 * @ipr_cmd: ipr command struct
6483 *
6484 * Description: This function restores the saved PCI config space of
6485 * the adapter, fails all outstanding ops back to the callers, and
6486 * fetches the dump/unit check if applicable to this reset.
6487 *
6488 * Return value:
6489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6490 **/
6491static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6492{
6493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6494 int rc;
6495
6496 ENTER;
6497 rc = pci_restore_state(ioa_cfg->pdev);
6498
6499 if (rc != PCIBIOS_SUCCESSFUL) {
6500 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6501 return IPR_RC_JOB_CONTINUE;
6502 }
6503
6504 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6505 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6506 return IPR_RC_JOB_CONTINUE;
6507 }
6508
6509 ipr_fail_all_ops(ioa_cfg);
6510
6511 if (ioa_cfg->ioa_unit_checked) {
6512 ioa_cfg->ioa_unit_checked = 0;
6513 ipr_get_unit_check_buffer(ioa_cfg);
6514 ipr_cmd->job_step = ipr_reset_alert;
6515 ipr_reset_start_timer(ipr_cmd, 0);
6516 return IPR_RC_JOB_RETURN;
6517 }
6518
6519 if (ioa_cfg->in_ioa_bringdown) {
6520 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6521 } else {
6522 ipr_cmd->job_step = ipr_reset_enable_ioa;
6523
6524 if (GET_DUMP == ioa_cfg->sdt_state) {
6525 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6526 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6527 schedule_work(&ioa_cfg->work_q);
6528 return IPR_RC_JOB_RETURN;
6529 }
6530 }
6531
6532 ENTER;
6533 return IPR_RC_JOB_CONTINUE;
6534}
6535
e619e1a7
BK		 6536/**
6537 * ipr_reset_bist_done - BIST has completed on the adapter.
6538 * @ipr_cmd: ipr command struct
6539 *
6540 * Description: Unblock config space and resume the reset process.
6541 *
6542 * Return value:
6543 * IPR_RC_JOB_CONTINUE
6544 **/
6545static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6546{
6547 ENTER;
6548 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6549 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6550 LEAVE;
6551 return IPR_RC_JOB_CONTINUE;
6552}
6553
1da177e4
LT		 6554/**
6555 * ipr_reset_start_bist - Run BIST on the adapter.
6556 * @ipr_cmd: ipr command struct
6557 *
6558 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6559 *
6560 * Return value:
6561 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6562 **/
6563static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6564{
6565 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6566 int rc;
6567
6568 ENTER;
b30197d2 6569 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6570 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6571
6572 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6573 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6574 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6575 rc = IPR_RC_JOB_CONTINUE;
6576 } else {
e619e1a7 6577 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6578 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6579 rc = IPR_RC_JOB_RETURN;
6580 }
6581
6582 LEAVE;
6583 return rc;
6584}
6585
463fc696
BK		 6586/**
6587 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6588 * @ipr_cmd: ipr command struct
6589 *
6590 * Description: This clears PCI reset to the adapter and delays two seconds.
6591 *
6592 * Return value:
6593 * IPR_RC_JOB_RETURN
6594 **/
6595static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6596{
6597 ENTER;
6598 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6599 ipr_cmd->job_step = ipr_reset_bist_done;
6600 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6601 LEAVE;
6602 return IPR_RC_JOB_RETURN;
6603}
6604
6605/**
6606 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6607 * @ipr_cmd: ipr command struct
6608 *
6609 * Description: This asserts PCI reset to the adapter.
6610 *
6611 * Return value:
6612 * IPR_RC_JOB_RETURN
6613 **/
6614static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6615{
6616 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6617 struct pci_dev *pdev = ioa_cfg->pdev;
6618
6619 ENTER;
6620 pci_block_user_cfg_access(pdev);
6621 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6622 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6623 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6624 LEAVE;
6625 return IPR_RC_JOB_RETURN;
6626}
6627
1da177e4
LT		 6628/**
6629 * ipr_reset_allowed - Query whether or not IOA can be reset
6630 * @ioa_cfg: ioa config struct
6631 *
6632 * Return value:
6633 * 0 if reset not allowed / non-zero if reset is allowed
6634 **/
6635static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6636{
6637 volatile u32 temp_reg;
6638
6639 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6640 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6641}
6642
6643/**
6644 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6645 * @ipr_cmd: ipr command struct
6646 *
6647 * Description: This function waits for adapter permission to run BIST,
6648 * then runs BIST. If the adapter does not give permission after a
6649 * reasonable time, we will reset the adapter anyway. The impact of
6650 * resetting the adapter without warning the adapter is the risk of
6651 * losing the persistent error log on the adapter. If the adapter is
6652 * reset while it is writing to the flash on the adapter, the flash
6653 * segment will have bad ECC and be zeroed.
6654 *
6655 * Return value:
6656 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6657 **/
6658static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6659{
6660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6661 int rc = IPR_RC_JOB_RETURN;
6662
6663 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6664 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6665 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6666 } else {
463fc696 6667 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6668 rc = IPR_RC_JOB_CONTINUE;
6669 }
6670
6671 return rc;
6672}
6673
6674/**
6675 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6676 * @ipr_cmd: ipr command struct
6677 *
6678 * Description: This function alerts the adapter that it will be reset.
6679 * If memory space is not currently enabled, proceed directly
6680 * to running BIST on the adapter. The timer must always be started
6681 * so we guarantee we do not run BIST from ipr_isr.
6682 *
6683 * Return value:
6684 * IPR_RC_JOB_RETURN
6685 **/
6686static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6687{
6688 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6689 u16 cmd_reg;
6690 int rc;
6691
6692 ENTER;
6693 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6694
6695 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6696 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6697 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6698 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6699 } else {
463fc696 6700 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6701 }
6702
6703 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6704 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6705
6706 LEAVE;
6707 return IPR_RC_JOB_RETURN;
6708}
6709
6710/**
6711 * ipr_reset_ucode_download_done - Microcode download completion
6712 * @ipr_cmd: ipr command struct
6713 *
6714 * Description: This function unmaps the microcode download buffer.
6715 *
6716 * Return value:
6717 * IPR_RC_JOB_CONTINUE
6718 **/
6719static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6720{
6721 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6722 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6723
6724 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6725 sglist->num_sg, DMA_TO_DEVICE);
6726
6727 ipr_cmd->job_step = ipr_reset_alert;
6728 return IPR_RC_JOB_CONTINUE;
6729}
6730
6731/**
6732 * ipr_reset_ucode_download - Download microcode to the adapter
6733 * @ipr_cmd: ipr command struct
6734 *
6735 * Description: This function checks to see if it there is microcode
6736 * to download to the adapter. If there is, a download is performed.
6737 *
6738 * Return value:
6739 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6740 **/
6741static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6742{
6743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6744 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6745
6746 ENTER;
6747 ipr_cmd->job_step = ipr_reset_alert;
6748
6749 if (!sglist)
6750 return IPR_RC_JOB_CONTINUE;
6751
6752 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6753 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6754 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6755 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6756 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6757 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6758 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6759
12baa420 6760 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6761 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6762
6763 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6764 IPR_WRITE_BUFFER_TIMEOUT);
6765
6766 LEAVE;
6767 return IPR_RC_JOB_RETURN;
6768}
6769
6770/**
6771 * ipr_reset_shutdown_ioa - Shutdown the adapter
6772 * @ipr_cmd: ipr command struct
6773 *
6774 * Description: This function issues an adapter shutdown of the
6775 * specified type to the specified adapter as part of the
6776 * adapter reset job.
6777 *
6778 * Return value:
6779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6780 **/
6781static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6782{
6783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6784 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6785 unsigned long timeout;
6786 int rc = IPR_RC_JOB_CONTINUE;
6787
6788 ENTER;
6789 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6790 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6791 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6792 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6793 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6794
ac09c349
BK		 6795 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6796 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6797 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6798 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6799 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6800 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6801 else
ac09c349 6802 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6803
6804 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6805
6806 rc = IPR_RC_JOB_RETURN;
6807 ipr_cmd->job_step = ipr_reset_ucode_download;
6808 } else
6809 ipr_cmd->job_step = ipr_reset_alert;
6810
6811 LEAVE;
6812 return rc;
6813}
6814
6815/**
6816 * ipr_reset_ioa_job - Adapter reset job
6817 * @ipr_cmd: ipr command struct
6818 *
6819 * Description: This function is the job router for the adapter reset job.
6820 *
6821 * Return value:
6822 * none
6823 **/
6824static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6825{
6826 u32 rc, ioasc;
1da177e4
LT		 6827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6828
6829 do {
6830 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6831
6832 if (ioa_cfg->reset_cmd != ipr_cmd) {
6833 /*
6834 * We are doing nested adapter resets and this is
6835 * not the current reset job.
6836 */
6837 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6838 return;
6839 }
6840
6841 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e 6842 rc = ipr_cmd->job_step_failed(ipr_cmd);
6843 if (rc == IPR_RC_JOB_RETURN)
6844 return;
1da177e4
LT		 6845 }
6846
6847 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6848 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6849 rc = ipr_cmd->job_step(ipr_cmd);
6850 } while(rc == IPR_RC_JOB_CONTINUE);
6851}
6852
6853/**
6854 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6855 * @ioa_cfg: ioa config struct
6856 * @job_step: first job step of reset job
6857 * @shutdown_type: shutdown type
6858 *
6859 * Description: This function will initiate the reset of the given adapter
6860 * starting at the selected job step.
6861 * If the caller needs to wait on the completion of the reset,
6862 * the caller must sleep on the reset_wait_q.
6863 *
6864 * Return value:
6865 * none
6866 **/
6867static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6868 int (*job_step) (struct ipr_cmnd *),
6869 enum ipr_shutdown_type shutdown_type)
6870{
6871 struct ipr_cmnd *ipr_cmd;
6872
6873 ioa_cfg->in_reset_reload = 1;
6874 ioa_cfg->allow_cmds = 0;
6875 scsi_block_requests(ioa_cfg->host);
6876
6877 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6878 ioa_cfg->reset_cmd = ipr_cmd;
6879 ipr_cmd->job_step = job_step;
6880 ipr_cmd->u.shutdown_type = shutdown_type;
6881
6882 ipr_reset_ioa_job(ipr_cmd);
6883}
6884
6885/**
6886 * ipr_initiate_ioa_reset - Initiate an adapter reset
6887 * @ioa_cfg: ioa config struct
6888 * @shutdown_type: shutdown type
6889 *
6890 * Description: This function will initiate the reset of the given adapter.
6891 * If the caller needs to wait on the completion of the reset,
6892 * the caller must sleep on the reset_wait_q.
6893 *
6894 * Return value:
6895 * none
6896 **/
6897static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6898 enum ipr_shutdown_type shutdown_type)
6899{
6900 if (ioa_cfg->ioa_is_dead)
6901 return;
6902
6903 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6904 ioa_cfg->sdt_state = ABORT_DUMP;
6905
6906 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6907 dev_err(&ioa_cfg->pdev->dev,
6908 "IOA taken offline - error recovery failed\n");
6909
6910 ioa_cfg->reset_retries = 0;
6911 ioa_cfg->ioa_is_dead = 1;
6912
6913 if (ioa_cfg->in_ioa_bringdown) {
6914 ioa_cfg->reset_cmd = NULL;
6915 ioa_cfg->in_reset_reload = 0;
6916 ipr_fail_all_ops(ioa_cfg);
6917 wake_up_all(&ioa_cfg->reset_wait_q);
6918
6919 spin_unlock_irq(ioa_cfg->host->host_lock);
6920 scsi_unblock_requests(ioa_cfg->host);
6921 spin_lock_irq(ioa_cfg->host->host_lock);
6922 return;
6923 } else {
6924 ioa_cfg->in_ioa_bringdown = 1;
6925 shutdown_type = IPR_SHUTDOWN_NONE;
6926 }
6927 }
6928
6929 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6930 shutdown_type);
6931}
6932
f8a88b19
LV		 6933/**
6934 * ipr_reset_freeze - Hold off all I/O activity
6935 * @ipr_cmd: ipr command struct
6936 *
6937 * Description: If the PCI slot is frozen, hold off all I/O
6938 * activity; then, as soon as the slot is available again,
6939 * initiate an adapter reset.
6940 */
6941static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6942{
6943 /* Disallow new interrupts, avoid loop */
6944 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6945 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6946 ipr_cmd->done = ipr_reset_ioa_job;
6947 return IPR_RC_JOB_RETURN;
6948}
6949
6950/**
6951 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6952 * @pdev: PCI device struct
6953 *
6954 * Description: This routine is called to tell us that the PCI bus
6955 * is down. Can't do anything here, except put the device driver
6956 * into a holding pattern, waiting for the PCI bus to come back.
6957 */
6958static void ipr_pci_frozen(struct pci_dev *pdev)
6959{
6960 unsigned long flags = 0;
6961 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6962
6963 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6964 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6965 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6966}
6967
6968/**
6969 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6970 * @pdev: PCI device struct
6971 *
6972 * Description: This routine is called by the pci error recovery
6973 * code after the PCI slot has been reset, just before we
6974 * should resume normal operations.
6975 */
6976static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6977{
6978 unsigned long flags = 0;
6979 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6980
6981 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6982 if (ioa_cfg->needs_warm_reset)
6983 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6984 else
6985 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6986 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6988 return PCI_ERS_RESULT_RECOVERED;
6989}
6990
6991/**
6992 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6993 * @pdev: PCI device struct
6994 *
6995 * Description: This routine is called when the PCI bus has
6996 * permanently failed.
6997 */
6998static void ipr_pci_perm_failure(struct pci_dev *pdev)
6999{
7000 unsigned long flags = 0;
7001 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7002
7003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7004 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7005 ioa_cfg->sdt_state = ABORT_DUMP;
7006 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7007 ioa_cfg->in_ioa_bringdown = 1;
7008 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7010}
7011
7012/**
7013 * ipr_pci_error_detected - Called when a PCI error is detected.
7014 * @pdev: PCI device struct
7015 * @state: PCI channel state
7016 *
7017 * Description: Called when a PCI error is detected.
7018 *
7019 * Return value:
7020 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7021 */
7022static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7023 pci_channel_state_t state)
7024{
7025 switch (state) {
7026 case pci_channel_io_frozen:
7027 ipr_pci_frozen(pdev);
7028 return PCI_ERS_RESULT_NEED_RESET;
7029 case pci_channel_io_perm_failure:
7030 ipr_pci_perm_failure(pdev);
7031 return PCI_ERS_RESULT_DISCONNECT;
7032 break;
7033 default:
7034 break;
7035 }
7036 return PCI_ERS_RESULT_NEED_RESET;
7037}
7038
1da177e4
LT		 7039/**
7040 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7041 * @ioa_cfg: ioa cfg struct
7042 *
7043 * Description: This is the second phase of adapter intialization
7044 * This function takes care of initilizing the adapter to the point
7045 * where it can accept new commands.
7046
7047 * Return value:
7048 * 0 on sucess / -EIO on failure
7049 **/
7050static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7051{
7052 int rc = 0;
7053 unsigned long host_lock_flags = 0;
7054
7055 ENTER;
7056 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7057 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce 7058 if (ioa_cfg->needs_hard_reset) {
7059 ioa_cfg->needs_hard_reset = 0;
7060 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7061 } else
7062 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7063 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7064
7065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7066 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7067 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7068
7069 if (ioa_cfg->ioa_is_dead) {
7070 rc = -EIO;
7071 } else if (ipr_invalid_adapter(ioa_cfg)) {
7072 if (!ipr_testmode)
7073 rc = -EIO;
7074
7075 dev_err(&ioa_cfg->pdev->dev,
7076 "Adapter not supported in this hardware configuration.\n");
7077 }
7078
7079 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7080
7081 LEAVE;
7082 return rc;
7083}
7084
7085/**
7086 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7087 * @ioa_cfg: ioa config struct
7088 *
7089 * Return value:
7090 * none
7091 **/
7092static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7093{
7094 int i;
7095
7096 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7097 if (ioa_cfg->ipr_cmnd_list[i])
7098 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7099 ioa_cfg->ipr_cmnd_list[i],
7100 ioa_cfg->ipr_cmnd_list_dma[i]);
7101
7102 ioa_cfg->ipr_cmnd_list[i] = NULL;
7103 }
7104
7105 if (ioa_cfg->ipr_cmd_pool)
7106 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7107
7108 ioa_cfg->ipr_cmd_pool = NULL;
7109}
7110
7111/**
7112 * ipr_free_mem - Frees memory allocated for an adapter
7113 * @ioa_cfg: ioa cfg struct
7114 *
7115 * Return value:
7116 * nothing
7117 **/
7118static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7119{
7120 int i;
7121
7122 kfree(ioa_cfg->res_entries);
7123 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7124 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7125 ipr_free_cmd_blks(ioa_cfg);
7126 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7127 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7128 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7129 ioa_cfg->cfg_table,
7130 ioa_cfg->cfg_table_dma);
7131
7132 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7133 pci_free_consistent(ioa_cfg->pdev,
7134 sizeof(struct ipr_hostrcb),
7135 ioa_cfg->hostrcb[i],
7136 ioa_cfg->hostrcb_dma[i]);
7137 }
7138
7139 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7140 kfree(ioa_cfg->trace);
7141}
7142
7143/**
7144 * ipr_free_all_resources - Free all allocated resources for an adapter.
7145 * @ipr_cmd: ipr command struct
7146 *
7147 * This function frees all allocated resources for the
7148 * specified adapter.
7149 *
7150 * Return value:
7151 * none
7152 **/
7153static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7154{
7155 struct pci_dev *pdev = ioa_cfg->pdev;
7156
7157 ENTER;
7158 free_irq(pdev->irq, ioa_cfg);
7159 iounmap(ioa_cfg->hdw_dma_regs);
7160 pci_release_regions(pdev);
7161 ipr_free_mem(ioa_cfg);
7162 scsi_host_put(ioa_cfg->host);
7163 pci_disable_device(pdev);
7164 LEAVE;
7165}
7166
7167/**
7168 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7169 * @ioa_cfg: ioa config struct
7170 *
7171 * Return value:
7172 * 0 on success / -ENOMEM on allocation failure
7173 **/
7174static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7175{
7176 struct ipr_cmnd *ipr_cmd;
7177 struct ipr_ioarcb *ioarcb;
7178 dma_addr_t dma_addr;
7179 int i;
7180
7181 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7182 sizeof(struct ipr_cmnd), 8, 0);
7183
7184 if (!ioa_cfg->ipr_cmd_pool)
7185 return -ENOMEM;
7186
7187 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7188 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7189
7190 if (!ipr_cmd) {
7191 ipr_free_cmd_blks(ioa_cfg);
7192 return -ENOMEM;
7193 }
7194
7195 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7196 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7197 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7198
7199 ioarcb = &ipr_cmd->ioarcb;
7200 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7201 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7202 ioarcb->write_ioadl_addr =
7203 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7204 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7205 ioarcb->ioasa_host_pci_addr =
7206 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7207 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7208 ipr_cmd->cmd_index = i;
7209 ipr_cmd->ioa_cfg = ioa_cfg;
7210 ipr_cmd->sense_buffer_dma = dma_addr +
7211 offsetof(struct ipr_cmnd, sense_buffer);
7212
7213 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7214 }
7215
7216 return 0;
7217}
7218
7219/**
7220 * ipr_alloc_mem - Allocate memory for an adapter
7221 * @ioa_cfg: ioa config struct
7222 *
7223 * Return value:
7224 * 0 on success / non-zero for error
7225 **/
7226static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7227{
7228 struct pci_dev *pdev = ioa_cfg->pdev;
7229 int i, rc = -ENOMEM;
7230
7231 ENTER;
0bc42e35 7232 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7233 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7234
7235 if (!ioa_cfg->res_entries)
7236 goto out;
7237
1da177e4
LT		 7238 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7239 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7240
7241 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7242 sizeof(struct ipr_misc_cbs),
7243 &ioa_cfg->vpd_cbs_dma);
7244
7245 if (!ioa_cfg->vpd_cbs)
7246 goto out_free_res_entries;
7247
7248 if (ipr_alloc_cmd_blks(ioa_cfg))
7249 goto out_free_vpd_cbs;
7250
7251 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7252 sizeof(u32) * IPR_NUM_CMD_BLKS,
7253 &ioa_cfg->host_rrq_dma);
7254
7255 if (!ioa_cfg->host_rrq)
7256 goto out_ipr_free_cmd_blocks;
7257
7258 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7259 sizeof(struct ipr_config_table),
7260 &ioa_cfg->cfg_table_dma);
7261
7262 if (!ioa_cfg->cfg_table)
7263 goto out_free_host_rrq;
7264
7265 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7266 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7267 sizeof(struct ipr_hostrcb),
7268 &ioa_cfg->hostrcb_dma[i]);
7269
7270 if (!ioa_cfg->hostrcb[i])
7271 goto out_free_hostrcb_dma;
7272
7273 ioa_cfg->hostrcb[i]->hostrcb_dma =
7274 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7275 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7276 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7277 }
7278
0bc42e35 7279 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7280 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7281
7282 if (!ioa_cfg->trace)
7283 goto out_free_hostrcb_dma;
7284
1da177e4
LT		 7285 rc = 0;
7286out:
7287 LEAVE;
7288 return rc;
7289
7290out_free_hostrcb_dma:
7291 while (i-- > 0) {
7292 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7293 ioa_cfg->hostrcb[i],
7294 ioa_cfg->hostrcb_dma[i]);
7295 }
7296 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7297 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7298out_free_host_rrq:
7299 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7300 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7301out_ipr_free_cmd_blocks:
7302 ipr_free_cmd_blks(ioa_cfg);
7303out_free_vpd_cbs:
7304 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7305 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7306out_free_res_entries:
7307 kfree(ioa_cfg->res_entries);
7308 goto out;
7309}
7310
7311/**
7312 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7313 * @ioa_cfg: ioa config struct
7314 *
7315 * Return value:
7316 * none
7317 **/
7318static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7319{
7320 int i;
7321
7322 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7323 ioa_cfg->bus_attr[i].bus = i;
7324 ioa_cfg->bus_attr[i].qas_enabled = 0;
7325 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7326 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7327 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7328 else
7329 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7330 }
7331}
7332
7333/**
7334 * ipr_init_ioa_cfg - Initialize IOA config struct
7335 * @ioa_cfg: ioa config struct
7336 * @host: scsi host struct
7337 * @pdev: PCI dev struct
7338 *
7339 * Return value:
7340 * none
7341 **/
7342static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7343 struct Scsi_Host *host, struct pci_dev *pdev)
7344{
7345 const struct ipr_interrupt_offsets *p;
7346 struct ipr_interrupts *t;
7347 void __iomem *base;
7348
7349 ioa_cfg->host = host;
7350 ioa_cfg->pdev = pdev;
7351 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7352 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7353 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7354 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7355 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7356 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7357 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7358 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7359 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7360 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7361
7362 INIT_LIST_HEAD(&ioa_cfg->free_q);
7363 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7365 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7366 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7367 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7368 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7369 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7370 ioa_cfg->sdt_state = INACTIVE;
62275040 7371 if (ipr_enable_cache)
7372 ioa_cfg->cache_state = CACHE_ENABLED;
7373 else
7374 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7375
7376 ipr_initialize_bus_attr(ioa_cfg);
7377
7378 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7379 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7380 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7381 host->unique_id = host->host_no;
7382 host->max_cmd_len = IPR_MAX_CDB_LEN;
7383 pci_set_drvdata(pdev, ioa_cfg);
7384
7385 p = &ioa_cfg->chip_cfg->regs;
7386 t = &ioa_cfg->regs;
7387 base = ioa_cfg->hdw_dma_regs;
7388
7389 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7390 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7391 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7392 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7393 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7394 t->ioarrin_reg = base + p->ioarrin_reg;
7395 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7396 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7397 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7398}
7399
7400/**
7401 * ipr_get_chip_cfg - Find adapter chip configuration
7402 * @dev_id: PCI device id struct
7403 *
7404 * Return value:
7405 * ptr to chip config on success / NULL on failure
7406 **/
7407static const struct ipr_chip_cfg_t * __devinit
7408ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7409{
7410 int i;
7411
1da177e4
LT		 7412 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7413 if (ipr_chip[i].vendor == dev_id->vendor &&
7414 ipr_chip[i].device == dev_id->device)
7415 return ipr_chip[i].cfg;
7416 return NULL;
7417}
7418
7419/**
7420 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7421 * @pdev: PCI device struct
7422 * @dev_id: PCI device id struct
7423 *
7424 * Return value:
7425 * 0 on success / non-zero on failure
7426 **/
7427static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7428 const struct pci_device_id *dev_id)
7429{
7430 struct ipr_ioa_cfg *ioa_cfg;
7431 struct Scsi_Host *host;
7432 unsigned long ipr_regs_pci;
7433 void __iomem *ipr_regs;
a2a65a3e 7434 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7435 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7436
7437 ENTER;
7438
7439 if ((rc = pci_enable_device(pdev))) {
7440 dev_err(&pdev->dev, "Cannot enable adapter\n");
7441 goto out;
7442 }
7443
7444 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7445
7446 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7447
7448 if (!host) {
7449 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7450 rc = -ENOMEM;
7451 goto out_disable;
7452 }
7453
7454 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7455 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7456 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7457 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7458
7459 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7460
7461 if (!ioa_cfg->chip_cfg) {
7462 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7463 dev_id->vendor, dev_id->device);
7464 goto out_scsi_host_put;
7465 }
7466
5469cb5b
BK		 7467 if (ipr_transop_timeout)
7468 ioa_cfg->transop_timeout = ipr_transop_timeout;
7469 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7470 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7471 else
7472 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7473
44c10138 7474 ioa_cfg->revid = pdev->revision;
463fc696 7475
1da177e4
LT		 7476 ipr_regs_pci = pci_resource_start(pdev, 0);
7477
7478 rc = pci_request_regions(pdev, IPR_NAME);
7479 if (rc < 0) {
7480 dev_err(&pdev->dev,
7481 "Couldn't register memory range of registers\n");
7482 goto out_scsi_host_put;
7483 }
7484
7485 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7486
7487 if (!ipr_regs) {
7488 dev_err(&pdev->dev,
7489 "Couldn't map memory range of registers\n");
7490 rc = -ENOMEM;
7491 goto out_release_regions;
7492 }
7493
7494 ioa_cfg->hdw_dma_regs = ipr_regs;
7495 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7496 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7497
7498 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7499
7500 pci_set_master(pdev);
7501
7502 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7503 if (rc < 0) {
7504 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7505 goto cleanup_nomem;
7506 }
7507
7508 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7509 ioa_cfg->chip_cfg->cache_line_size);
7510
7511 if (rc != PCIBIOS_SUCCESSFUL) {
7512 dev_err(&pdev->dev, "Write of cache line size failed\n");
7513 rc = -EIO;
7514 goto cleanup_nomem;
7515 }
7516
7517 /* Save away PCI config space for use following IOA reset */
7518 rc = pci_save_state(pdev);
7519
7520 if (rc != PCIBIOS_SUCCESSFUL) {
7521 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7522 rc = -EIO;
7523 goto cleanup_nomem;
7524 }
7525
7526 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7527 goto cleanup_nomem;
7528
7529 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7530 goto cleanup_nomem;
7531
7532 rc = ipr_alloc_mem(ioa_cfg);
7533 if (rc < 0) {
7534 dev_err(&pdev->dev,
7535 "Couldn't allocate enough memory for device driver!\n");
7536 goto cleanup_nomem;
7537 }
7538
ce155cce 7539 /*
7540 * If HRRQ updated interrupt is not masked, or reset alert is set,
7541 * the card is in an unknown state and needs a hard reset
7542 */
7543 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7544 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce 7545 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7546 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7547 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7548 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7549 ioa_cfg->needs_hard_reset = 1;
7550 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7551 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7552
1da177e4 7553 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7554 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7555
7556 if (rc) {
7557 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7558 pdev->irq, rc);
7559 goto cleanup_nolog;
7560 }
7561
463fc696
BK		 7562 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7563 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7564 ioa_cfg->needs_warm_reset = 1;
7565 ioa_cfg->reset = ipr_reset_slot_reset;
7566 } else
7567 ioa_cfg->reset = ipr_reset_start_bist;
7568
1da177e4
LT		 7569 spin_lock(&ipr_driver_lock);
7570 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7571 spin_unlock(&ipr_driver_lock);
7572
7573 LEAVE;
7574out:
7575 return rc;
7576
7577cleanup_nolog:
7578 ipr_free_mem(ioa_cfg);
7579cleanup_nomem:
7580 iounmap(ipr_regs);
7581out_release_regions:
7582 pci_release_regions(pdev);
7583out_scsi_host_put:
7584 scsi_host_put(host);
7585out_disable:
7586 pci_disable_device(pdev);
7587 goto out;
7588}
7589
7590/**
7591 * ipr_scan_vsets - Scans for VSET devices
7592 * @ioa_cfg: ioa config struct
7593 *
7594 * Description: Since the VSET resources do not follow SAM in that we can have
7595 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7596 *
7597 * Return value:
7598 * none
7599 **/
7600static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7601{
7602 int target, lun;
7603
7604 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7605 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7606 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7607}
7608
7609/**
7610 * ipr_initiate_ioa_bringdown - Bring down an adapter
7611 * @ioa_cfg: ioa config struct
7612 * @shutdown_type: shutdown type
7613 *
7614 * Description: This function will initiate bringing down the adapter.
7615 * This consists of issuing an IOA shutdown to the adapter
7616 * to flush the cache, and running BIST.
7617 * If the caller needs to wait on the completion of the reset,
7618 * the caller must sleep on the reset_wait_q.
7619 *
7620 * Return value:
7621 * none
7622 **/
7623static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7624 enum ipr_shutdown_type shutdown_type)
7625{
7626 ENTER;
7627 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7628 ioa_cfg->sdt_state = ABORT_DUMP;
7629 ioa_cfg->reset_retries = 0;
7630 ioa_cfg->in_ioa_bringdown = 1;
7631 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7632 LEAVE;
7633}
7634
7635/**
7636 * __ipr_remove - Remove a single adapter
7637 * @pdev: pci device struct
7638 *
7639 * Adapter hot plug remove entry point.
7640 *
7641 * Return value:
7642 * none
7643 **/
7644static void __ipr_remove(struct pci_dev *pdev)
7645{
7646 unsigned long host_lock_flags = 0;
7647 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7648 ENTER;
7649
7650 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7651 while(ioa_cfg->in_reset_reload) {
7652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7653 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7654 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7655 }
7656
1da177e4
LT		 7657 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7658
7659 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7660 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7661 flush_scheduled_work();
1da177e4
LT		 7662 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7663
7664 spin_lock(&ipr_driver_lock);
7665 list_del(&ioa_cfg->queue);
7666 spin_unlock(&ipr_driver_lock);
7667
7668 if (ioa_cfg->sdt_state == ABORT_DUMP)
7669 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7670 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7671
7672 ipr_free_all_resources(ioa_cfg);
7673
7674 LEAVE;
7675}
7676
7677/**
7678 * ipr_remove - IOA hot plug remove entry point
7679 * @pdev: pci device struct
7680 *
7681 * Adapter hot plug remove entry point.
7682 *
7683 * Return value:
7684 * none
7685 **/
7686static void ipr_remove(struct pci_dev *pdev)
7687{
7688 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7689
7690 ENTER;
7691
1da177e4
LT		 7692 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7693 &ipr_trace_attr);
7694 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7695 &ipr_dump_attr);
7696 scsi_remove_host(ioa_cfg->host);
7697
7698 __ipr_remove(pdev);
7699
7700 LEAVE;
7701}
7702
7703/**
7704 * ipr_probe - Adapter hot plug add entry point
7705 *
7706 * Return value:
7707 * 0 on success / non-zero on failure
7708 **/
7709static int __devinit ipr_probe(struct pci_dev *pdev,
7710 const struct pci_device_id *dev_id)
7711{
7712 struct ipr_ioa_cfg *ioa_cfg;
7713 int rc;
7714
7715 rc = ipr_probe_ioa(pdev, dev_id);
7716
7717 if (rc)
7718 return rc;
7719
7720 ioa_cfg = pci_get_drvdata(pdev);
7721 rc = ipr_probe_ioa_part2(ioa_cfg);
7722
7723 if (rc) {
7724 __ipr_remove(pdev);
7725 return rc;
7726 }
7727
7728 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7729
7730 if (rc) {
7731 __ipr_remove(pdev);
7732 return rc;
7733 }
7734
7735 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7736 &ipr_trace_attr);
7737
7738 if (rc) {
7739 scsi_remove_host(ioa_cfg->host);
7740 __ipr_remove(pdev);
7741 return rc;
7742 }
7743
7744 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7745 &ipr_dump_attr);
7746
7747 if (rc) {
7748 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7749 &ipr_trace_attr);
7750 scsi_remove_host(ioa_cfg->host);
7751 __ipr_remove(pdev);
7752 return rc;
7753 }
7754
7755 scsi_scan_host(ioa_cfg->host);
7756 ipr_scan_vsets(ioa_cfg);
7757 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7758 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7759 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7760 schedule_work(&ioa_cfg->work_q);
7761 return 0;
7762}
7763
7764/**
7765 * ipr_shutdown - Shutdown handler.
d18c3db5 7766 * @pdev: pci device struct
1da177e4
LT		 7767 *
7768 * This function is invoked upon system shutdown/reboot. It will issue
7769 * an adapter shutdown to the adapter to flush the write cache.
7770 *
7771 * Return value:
7772 * none
7773 **/
d18c3db5 7774static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7775{
d18c3db5 7776 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7777 unsigned long lock_flags = 0;
7778
7779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7780 while(ioa_cfg->in_reset_reload) {
7781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7784 }
7785
1da177e4
LT		 7786 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7788 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7789}
7790
7791static struct pci_device_id ipr_pci_table[] __devinitdata = {
7792 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7793 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7794 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7795 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7796 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7797 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7798 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7800 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7802 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7804 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7805 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7806 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7808 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7809 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7811 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 7812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7813 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7814 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7816 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7817 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7819 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7820 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7821 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7824 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7827 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7830 IPR_USE_LONG_TRANSOP_TIMEOUT },
7831 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7832 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7835 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7836 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7837 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7838 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7840 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7841 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7842 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7843 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7844 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7845 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7846 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7847 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7848 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7849 { }
7850};
7851MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7852
f8a88b19
LV		 7853static struct pci_error_handlers ipr_err_handler = {
7854 .error_detected = ipr_pci_error_detected,
7855 .slot_reset = ipr_pci_slot_reset,
7856};
7857
1da177e4
LT		 7858static struct pci_driver ipr_driver = {
7859 .name = IPR_NAME,
7860 .id_table = ipr_pci_table,
7861 .probe = ipr_probe,
7862 .remove = ipr_remove,
d18c3db5 7863 .shutdown = ipr_shutdown,
f8a88b19 7864 .err_handler = &ipr_err_handler,
68c96e59 7865 .dynids.use_driver_data = 1
1da177e4
LT		 7866};
7867
7868/**
7869 * ipr_init - Module entry point
7870 *
7871 * Return value:
7872 * 0 on success / negative value on failure
7873 **/
7874static int __init ipr_init(void)
7875{
7876 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7877 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7878
dcbccbde 7879 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7880}
7881
7882/**
7883 * ipr_exit - Module unload
7884 *
7885 * Module unload entry point.
7886 *
7887 * Return value:
7888 * none
7889 **/
7890static void __exit ipr_exit(void)
7891{
7892 pci_unregister_driver(&ipr_driver);
7893}
7894
7895module_init(ipr_init);
7896module_exit(ipr_exit);
Linux 6.x block layer and io_uring tree(s)