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[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
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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 */
b7d68ca3 87static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 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
BK		 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
BK		 158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 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
BK		 1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
ee0f05b8
BK		 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
BK		 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
BK		 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 2874 scatterlist = sglist->scatterlist;
45711f1a 2875 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 2876
2877 sglist->order = order;
2878 sglist->num_sg = num_elem;
2879
2880 /* Allocate a bunch of sg elements */
2881 for (i = 0; i < num_elem; i++) {
2882 page = alloc_pages(GFP_KERNEL, order);
2883 if (!page) {
2884 ipr_trace;
2885
2886 /* Free up what we already allocated */
2887 for (j = i - 1; j >= 0; j--)
45711f1a 2888 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 2889 kfree(sglist);
2890 return NULL;
2891 }
2892
642f1490 2893 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 2894 }
2895
2896 return sglist;
2897}
2898
2899/**
2900 * ipr_free_ucode_buffer - Frees a microcode download buffer
2901 * @p_dnld: scatter/gather list pointer
2902 *
2903 * Free a DMA'able ucode download buffer previously allocated with
2904 * ipr_alloc_ucode_buffer
2905 *
2906 * Return value:
2907 * nothing
2908 **/
2909static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2910{
2911 int i;
2912
2913 for (i = 0; i < sglist->num_sg; i++)
45711f1a 2914 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 2915
2916 kfree(sglist);
2917}
2918
2919/**
2920 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2921 * @sglist: scatter/gather list pointer
2922 * @buffer: buffer pointer
2923 * @len: buffer length
2924 *
2925 * Copy a microcode image from a user buffer into a buffer allocated by
2926 * ipr_alloc_ucode_buffer
2927 *
2928 * Return value:
2929 * 0 on success / other on failure
2930 **/
2931static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2932 u8 *buffer, u32 len)
2933{
2934 int bsize_elem, i, result = 0;
2935 struct scatterlist *scatterlist;
2936 void *kaddr;
2937
2938 /* Determine the actual number of bytes per element */
2939 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2940
2941 scatterlist = sglist->scatterlist;
2942
2943 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 2944 struct page *page = sg_page(&scatterlist[i]);
2945
2946 kaddr = kmap(page);
1da177e4 2947 memcpy(kaddr, buffer, bsize_elem);
45711f1a 2948 kunmap(page);
1da177e4
LT		 2949
2950 scatterlist[i].length = bsize_elem;
2951
2952 if (result != 0) {
2953 ipr_trace;
2954 return result;
2955 }
2956 }
2957
2958 if (len % bsize_elem) {
45711f1a
JA		 2959 struct page *page = sg_page(&scatterlist[i]);
2960
2961 kaddr = kmap(page);
1da177e4 2962 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 2963 kunmap(page);
1da177e4
LT		 2964
2965 scatterlist[i].length = len % bsize_elem;
2966 }
2967
2968 sglist->buffer_len = len;
2969 return result;
2970}
2971
2972/**
12baa420 2973 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2974 * @ipr_cmd: ipr command struct
2975 * @sglist: scatter/gather list
1da177e4 2976 *
12baa420 2977 * Builds a microcode download IOA data list (IOADL).
1da177e4 2978 *
1da177e4 2979 **/
12baa420
BK		 2980static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2981 struct ipr_sglist *sglist)
1da177e4 2982{
1da177e4
LT		 2983 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2984 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2985 struct scatterlist *scatterlist = sglist->scatterlist;
2986 int i;
2987
12baa420 2988 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2989 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2990 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2991 ioarcb->write_ioadl_len =
2992 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2993
2994 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2995 ioadl[i].flags_and_data_len =
2996 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2997 ioadl[i].address =
2998 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2999 }
3000
12baa420
BK		 3001 ioadl[i-1].flags_and_data_len |=
3002 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3003}
3004
3005/**
3006 * ipr_update_ioa_ucode - Update IOA's microcode
3007 * @ioa_cfg: ioa config struct
3008 * @sglist: scatter/gather list
3009 *
3010 * Initiate an adapter reset to update the IOA's microcode
3011 *
3012 * Return value:
3013 * 0 on success / -EIO on failure
3014 **/
3015static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3016 struct ipr_sglist *sglist)
3017{
3018 unsigned long lock_flags;
3019
3020 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3021 while(ioa_cfg->in_reset_reload) {
3022 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3023 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3025 }
12baa420
BK		 3026
3027 if (ioa_cfg->ucode_sglist) {
3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3029 dev_err(&ioa_cfg->pdev->dev,
3030 "Microcode download already in progress\n");
3031 return -EIO;
1da177e4 3032 }
12baa420
BK		 3033
3034 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3035 sglist->num_sg, DMA_TO_DEVICE);
3036
3037 if (!sglist->num_dma_sg) {
3038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3039 dev_err(&ioa_cfg->pdev->dev,
3040 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3041 return -EIO;
3042 }
3043
12baa420
BK		 3044 ioa_cfg->ucode_sglist = sglist;
3045 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3047 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3048
3049 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3050 ioa_cfg->ucode_sglist = NULL;
3051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3052 return 0;
3053}
3054
3055/**
3056 * ipr_store_update_fw - Update the firmware on the adapter
3057 * @class_dev: class_device struct
3058 * @buf: buffer
3059 * @count: buffer size
3060 *
3061 * This function will update the firmware on the adapter.
3062 *
3063 * Return value:
3064 * count on success / other on failure
3065 **/
3066static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3067 const char *buf, size_t count)
3068{
3069 struct Scsi_Host *shost = class_to_shost(class_dev);
3070 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3071 struct ipr_ucode_image_header *image_hdr;
3072 const struct firmware *fw_entry;
3073 struct ipr_sglist *sglist;
1da177e4
LT		 3074 char fname[100];
3075 char *src;
3076 int len, result, dnld_size;
3077
3078 if (!capable(CAP_SYS_ADMIN))
3079 return -EACCES;
3080
3081 len = snprintf(fname, 99, "%s", buf);
3082 fname[len-1] = '\0';
3083
3084 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3085 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3086 return -EIO;
3087 }
3088
3089 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3090
3091 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3092 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3093 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3094 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3095 release_firmware(fw_entry);
3096 return -EINVAL;
3097 }
3098
3099 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3100 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3101 sglist = ipr_alloc_ucode_buffer(dnld_size);
3102
3103 if (!sglist) {
3104 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3105 release_firmware(fw_entry);
3106 return -ENOMEM;
3107 }
3108
3109 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3110
3111 if (result) {
3112 dev_err(&ioa_cfg->pdev->dev,
3113 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3114 goto out;
1da177e4
LT		 3115 }
3116
12baa420 3117 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3118
12baa420
BK		 3119 if (!result)
3120 result = count;
3121out:
1da177e4
LT		 3122 ipr_free_ucode_buffer(sglist);
3123 release_firmware(fw_entry);
12baa420 3124 return result;
1da177e4
LT		 3125}
3126
3127static struct class_device_attribute ipr_update_fw_attr = {
3128 .attr = {
3129 .name = "update_fw",
3130 .mode = S_IWUSR,
3131 },
3132 .store = ipr_store_update_fw
3133};
3134
3135static struct class_device_attribute *ipr_ioa_attrs[] = {
3136 &ipr_fw_version_attr,
3137 &ipr_log_level_attr,
3138 &ipr_diagnostics_attr,
f37eb54b 3139 &ipr_ioa_state_attr,
1da177e4
LT		 3140 &ipr_ioa_reset_attr,
3141 &ipr_update_fw_attr,
62275040 3142 &ipr_ioa_cache_attr,
1da177e4
LT		 3143 NULL,
3144};
3145
3146#ifdef CONFIG_SCSI_IPR_DUMP
3147/**
3148 * ipr_read_dump - Dump the adapter
3149 * @kobj: kobject struct
91a69029 3150 * @bin_attr: bin_attribute struct
1da177e4
LT		 3151 * @buf: buffer
3152 * @off: offset
3153 * @count: buffer size
3154 *
3155 * Return value:
3156 * number of bytes printed to buffer
3157 **/
91a69029
ZR		 3158static ssize_t ipr_read_dump(struct kobject *kobj,
3159 struct bin_attribute *bin_attr,
3160 char *buf, loff_t off, size_t count)
1da177e4
LT		 3161{
3162 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3163 struct Scsi_Host *shost = class_to_shost(cdev);
3164 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3165 struct ipr_dump *dump;
3166 unsigned long lock_flags = 0;
3167 char *src;
3168 int len;
3169 size_t rc = count;
3170
3171 if (!capable(CAP_SYS_ADMIN))
3172 return -EACCES;
3173
3174 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3175 dump = ioa_cfg->dump;
3176
3177 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3179 return 0;
3180 }
3181 kref_get(&dump->kref);
3182 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3183
3184 if (off > dump->driver_dump.hdr.len) {
3185 kref_put(&dump->kref, ipr_release_dump);
3186 return 0;
3187 }
3188
3189 if (off + count > dump->driver_dump.hdr.len) {
3190 count = dump->driver_dump.hdr.len - off;
3191 rc = count;
3192 }
3193
3194 if (count && off < sizeof(dump->driver_dump)) {
3195 if (off + count > sizeof(dump->driver_dump))
3196 len = sizeof(dump->driver_dump) - off;
3197 else
3198 len = count;
3199 src = (u8 *)&dump->driver_dump + off;
3200 memcpy(buf, src, len);
3201 buf += len;
3202 off += len;
3203 count -= len;
3204 }
3205
3206 off -= sizeof(dump->driver_dump);
3207
3208 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3209 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3210 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3211 else
3212 len = count;
3213 src = (u8 *)&dump->ioa_dump + off;
3214 memcpy(buf, src, len);
3215 buf += len;
3216 off += len;
3217 count -= len;
3218 }
3219
3220 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3221
3222 while (count) {
3223 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3224 len = PAGE_ALIGN(off) - off;
3225 else
3226 len = count;
3227 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3228 src += off & ~PAGE_MASK;
3229 memcpy(buf, src, len);
3230 buf += len;
3231 off += len;
3232 count -= len;
3233 }
3234
3235 kref_put(&dump->kref, ipr_release_dump);
3236 return rc;
3237}
3238
3239/**
3240 * ipr_alloc_dump - Prepare for adapter dump
3241 * @ioa_cfg: ioa config struct
3242 *
3243 * Return value:
3244 * 0 on success / other on failure
3245 **/
3246static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3247{
3248 struct ipr_dump *dump;
3249 unsigned long lock_flags = 0;
3250
0bc42e35 3251 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3252
3253 if (!dump) {
3254 ipr_err("Dump memory allocation failed\n");
3255 return -ENOMEM;
3256 }
3257
1da177e4
LT		 3258 kref_init(&dump->kref);
3259 dump->ioa_cfg = ioa_cfg;
3260
3261 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3262
3263 if (INACTIVE != ioa_cfg->sdt_state) {
3264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3265 kfree(dump);
3266 return 0;
3267 }
3268
3269 ioa_cfg->dump = dump;
3270 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3271 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3272 ioa_cfg->dump_taken = 1;
3273 schedule_work(&ioa_cfg->work_q);
3274 }
3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276
1da177e4
LT		 3277 return 0;
3278}
3279
3280/**
3281 * ipr_free_dump - Free adapter dump memory
3282 * @ioa_cfg: ioa config struct
3283 *
3284 * Return value:
3285 * 0 on success / other on failure
3286 **/
3287static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3288{
3289 struct ipr_dump *dump;
3290 unsigned long lock_flags = 0;
3291
3292 ENTER;
3293
3294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3295 dump = ioa_cfg->dump;
3296 if (!dump) {
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298 return 0;
3299 }
3300
3301 ioa_cfg->dump = NULL;
3302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3303
3304 kref_put(&dump->kref, ipr_release_dump);
3305
3306 LEAVE;
3307 return 0;
3308}
3309
3310/**
3311 * ipr_write_dump - Setup dump state of adapter
3312 * @kobj: kobject struct
91a69029 3313 * @bin_attr: bin_attribute struct
1da177e4
LT		 3314 * @buf: buffer
3315 * @off: offset
3316 * @count: buffer size
3317 *
3318 * Return value:
3319 * number of bytes printed to buffer
3320 **/
91a69029
ZR		 3321static ssize_t ipr_write_dump(struct kobject *kobj,
3322 struct bin_attribute *bin_attr,
3323 char *buf, loff_t off, size_t count)
1da177e4
LT		 3324{
3325 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3326 struct Scsi_Host *shost = class_to_shost(cdev);
3327 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3328 int rc;
3329
3330 if (!capable(CAP_SYS_ADMIN))
3331 return -EACCES;
3332
3333 if (buf[0] == '1')
3334 rc = ipr_alloc_dump(ioa_cfg);
3335 else if (buf[0] == '0')
3336 rc = ipr_free_dump(ioa_cfg);
3337 else
3338 return -EINVAL;
3339
3340 if (rc)
3341 return rc;
3342 else
3343 return count;
3344}
3345
3346static struct bin_attribute ipr_dump_attr = {
3347 .attr = {
3348 .name = "dump",
3349 .mode = S_IRUSR | S_IWUSR,
3350 },
3351 .size = 0,
3352 .read = ipr_read_dump,
3353 .write = ipr_write_dump
3354};
3355#else
3356static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3357#endif
3358
3359/**
3360 * ipr_change_queue_depth - Change the device's queue depth
3361 * @sdev: scsi device struct
3362 * @qdepth: depth to set
3363 *
3364 * Return value:
3365 * actual depth set
3366 **/
3367static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3368{
35a39691
BK		 3369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3370 struct ipr_resource_entry *res;
3371 unsigned long lock_flags = 0;
3372
3373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3374 res = (struct ipr_resource_entry *)sdev->hostdata;
3375
3376 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3377 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3379
1da177e4
LT		 3380 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3381 return sdev->queue_depth;
3382}
3383
3384/**
3385 * ipr_change_queue_type - Change the device's queue type
3386 * @dsev: scsi device struct
3387 * @tag_type: type of tags to use
3388 *
3389 * Return value:
3390 * actual queue type set
3391 **/
3392static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3393{
3394 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3395 struct ipr_resource_entry *res;
3396 unsigned long lock_flags = 0;
3397
3398 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3399 res = (struct ipr_resource_entry *)sdev->hostdata;
3400
3401 if (res) {
3402 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3403 /*
3404 * We don't bother quiescing the device here since the
3405 * adapter firmware does it for us.
3406 */
3407 scsi_set_tag_type(sdev, tag_type);
3408
3409 if (tag_type)
3410 scsi_activate_tcq(sdev, sdev->queue_depth);
3411 else
3412 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3413 } else
3414 tag_type = 0;
3415 } else
3416 tag_type = 0;
3417
3418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3419 return tag_type;
3420}
3421
3422/**
3423 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3424 * @dev: device struct
3425 * @buf: buffer
3426 *
3427 * Return value:
3428 * number of bytes printed to buffer
3429 **/
10523b3b 3430static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3431{
3432 struct scsi_device *sdev = to_scsi_device(dev);
3433 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3434 struct ipr_resource_entry *res;
3435 unsigned long lock_flags = 0;
3436 ssize_t len = -ENXIO;
3437
3438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3439 res = (struct ipr_resource_entry *)sdev->hostdata;
3440 if (res)
3441 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3443 return len;
3444}
3445
3446static struct device_attribute ipr_adapter_handle_attr = {
3447 .attr = {
3448 .name = "adapter_handle",
3449 .mode = S_IRUSR,
3450 },
3451 .show = ipr_show_adapter_handle
3452};
3453
3454static struct device_attribute *ipr_dev_attrs[] = {
3455 &ipr_adapter_handle_attr,
3456 NULL,
3457};
3458
3459/**
3460 * ipr_biosparam - Return the HSC mapping
3461 * @sdev: scsi device struct
3462 * @block_device: block device pointer
3463 * @capacity: capacity of the device
3464 * @parm: Array containing returned HSC values.
3465 *
3466 * This function generates the HSC parms that fdisk uses.
3467 * We want to make sure we return something that places partitions
3468 * on 4k boundaries for best performance with the IOA.
3469 *
3470 * Return value:
3471 * 0 on success
3472 **/
3473static int ipr_biosparam(struct scsi_device *sdev,
3474 struct block_device *block_device,
3475 sector_t capacity, int *parm)
3476{
3477 int heads, sectors;
3478 sector_t cylinders;
3479
3480 heads = 128;
3481 sectors = 32;
3482
3483 cylinders = capacity;
3484 sector_div(cylinders, (128 * 32));
3485
3486 /* return result */
3487 parm[0] = heads;
3488 parm[1] = sectors;
3489 parm[2] = cylinders;
3490
3491 return 0;
3492}
3493
35a39691
BK		 3494/**
3495 * ipr_find_starget - Find target based on bus/target.
3496 * @starget: scsi target struct
3497 *
3498 * Return value:
3499 * resource entry pointer if found / NULL if not found
3500 **/
3501static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3502{
3503 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3505 struct ipr_resource_entry *res;
3506
3507 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3508 if ((res->cfgte.res_addr.bus == starget->channel) &&
3509 (res->cfgte.res_addr.target == starget->id) &&
3510 (res->cfgte.res_addr.lun == 0)) {
3511 return res;
3512 }
3513 }
3514
3515 return NULL;
3516}
3517
3518static struct ata_port_info sata_port_info;
3519
3520/**
3521 * ipr_target_alloc - Prepare for commands to a SCSI target
3522 * @starget: scsi target struct
3523 *
3524 * If the device is a SATA device, this function allocates an
3525 * ATA port with libata, else it does nothing.
3526 *
3527 * Return value:
3528 * 0 on success / non-0 on failure
3529 **/
3530static int ipr_target_alloc(struct scsi_target *starget)
3531{
3532 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3533 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3534 struct ipr_sata_port *sata_port;
3535 struct ata_port *ap;
3536 struct ipr_resource_entry *res;
3537 unsigned long lock_flags;
3538
3539 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3540 res = ipr_find_starget(starget);
3541 starget->hostdata = NULL;
3542
3543 if (res && ipr_is_gata(res)) {
3544 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3545 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3546 if (!sata_port)
3547 return -ENOMEM;
3548
3549 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3550 if (ap) {
3551 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3552 sata_port->ioa_cfg = ioa_cfg;
3553 sata_port->ap = ap;
3554 sata_port->res = res;
3555
3556 res->sata_port = sata_port;
3557 ap->private_data = sata_port;
3558 starget->hostdata = sata_port;
3559 } else {
3560 kfree(sata_port);
3561 return -ENOMEM;
3562 }
3563 }
3564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3565
3566 return 0;
3567}
3568
3569/**
3570 * ipr_target_destroy - Destroy a SCSI target
3571 * @starget: scsi target struct
3572 *
3573 * If the device was a SATA device, this function frees the libata
3574 * ATA port, else it does nothing.
3575 *
3576 **/
3577static void ipr_target_destroy(struct scsi_target *starget)
3578{
3579 struct ipr_sata_port *sata_port = starget->hostdata;
3580
3581 if (sata_port) {
3582 starget->hostdata = NULL;
3583 ata_sas_port_destroy(sata_port->ap);
3584 kfree(sata_port);
3585 }
3586}
3587
3588/**
3589 * ipr_find_sdev - Find device based on bus/target/lun.
3590 * @sdev: scsi device struct
3591 *
3592 * Return value:
3593 * resource entry pointer if found / NULL if not found
3594 **/
3595static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3596{
3597 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3598 struct ipr_resource_entry *res;
3599
3600 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3601 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3602 (res->cfgte.res_addr.target == sdev->id) &&
3603 (res->cfgte.res_addr.lun == sdev->lun))
3604 return res;
3605 }
3606
3607 return NULL;
3608}
3609
1da177e4
LT		 3610/**
3611 * ipr_slave_destroy - Unconfigure a SCSI device
3612 * @sdev: scsi device struct
3613 *
3614 * Return value:
3615 * nothing
3616 **/
3617static void ipr_slave_destroy(struct scsi_device *sdev)
3618{
3619 struct ipr_resource_entry *res;
3620 struct ipr_ioa_cfg *ioa_cfg;
3621 unsigned long lock_flags = 0;
3622
3623 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3624
3625 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3626 res = (struct ipr_resource_entry *) sdev->hostdata;
3627 if (res) {
35a39691
BK		 3628 if (res->sata_port)
3629 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3630 sdev->hostdata = NULL;
3631 res->sdev = NULL;
35a39691 3632 res->sata_port = NULL;
1da177e4
LT		 3633 }
3634 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3635}
3636
3637/**
3638 * ipr_slave_configure - Configure a SCSI device
3639 * @sdev: scsi device struct
3640 *
3641 * This function configures the specified scsi device.
3642 *
3643 * Return value:
3644 * 0 on success
3645 **/
3646static int ipr_slave_configure(struct scsi_device *sdev)
3647{
3648 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3649 struct ipr_resource_entry *res;
3650 unsigned long lock_flags = 0;
3651
3652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3653 res = sdev->hostdata;
3654 if (res) {
3655 if (ipr_is_af_dasd_device(res))
3656 sdev->type = TYPE_RAID;
0726ce26 3657 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3658 sdev->scsi_level = 4;
0726ce26
BK		 3659 sdev->no_uld_attach = 1;
3660 }
1da177e4
LT		 3661 if (ipr_is_vset_device(res)) {
3662 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3663 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3664 }
e4fbf44e 3665 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3666 sdev->allow_restart = 1;
35a39691
BK		 3667 if (ipr_is_gata(res) && res->sata_port) {
3668 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3669 ata_sas_slave_configure(sdev, res->sata_port->ap);
3670 } else {
3671 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3672 }
1da177e4
LT		 3673 }
3674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3675 return 0;
3676}
3677
35a39691
BK		 3678/**
3679 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3680 * @sdev: scsi device struct
3681 *
3682 * This function initializes an ATA port so that future commands
3683 * sent through queuecommand will work.
3684 *
3685 * Return value:
3686 * 0 on success
3687 **/
3688static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3689{
3690 struct ipr_sata_port *sata_port = NULL;
3691 int rc = -ENXIO;
3692
3693 ENTER;
3694 if (sdev->sdev_target)
3695 sata_port = sdev->sdev_target->hostdata;
3696 if (sata_port)
3697 rc = ata_sas_port_init(sata_port->ap);
3698 if (rc)
3699 ipr_slave_destroy(sdev);
3700
3701 LEAVE;
3702 return rc;
3703}
3704
1da177e4
LT		 3705/**
3706 * ipr_slave_alloc - Prepare for commands to a device.
3707 * @sdev: scsi device struct
3708 *
3709 * This function saves a pointer to the resource entry
3710 * in the scsi device struct if the device exists. We
3711 * can then use this pointer in ipr_queuecommand when
3712 * handling new commands.
3713 *
3714 * Return value:
692aebfc 3715 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3716 **/
3717static int ipr_slave_alloc(struct scsi_device *sdev)
3718{
3719 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3720 struct ipr_resource_entry *res;
3721 unsigned long lock_flags;
692aebfc 3722 int rc = -ENXIO;
1da177e4
LT		 3723
3724 sdev->hostdata = NULL;
3725
3726 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3727
35a39691
BK		 3728 res = ipr_find_sdev(sdev);
3729 if (res) {
3730 res->sdev = sdev;
3731 res->add_to_ml = 0;
3732 res->in_erp = 0;
3733 sdev->hostdata = res;
3734 if (!ipr_is_naca_model(res))
3735 res->needs_sync_complete = 1;
3736 rc = 0;
3737 if (ipr_is_gata(res)) {
3738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3739 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3740 }
3741 }
3742
3743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3744
692aebfc 3745 return rc;
1da177e4
LT		 3746}
3747
3748/**
3749 * ipr_eh_host_reset - Reset the host adapter
3750 * @scsi_cmd: scsi command struct
3751 *
3752 * Return value:
3753 * SUCCESS / FAILED
3754 **/
df0ae249 3755static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3756{
3757 struct ipr_ioa_cfg *ioa_cfg;
3758 int rc;
3759
3760 ENTER;
3761 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3762
3763 dev_err(&ioa_cfg->pdev->dev,
3764 "Adapter being reset as a result of error recovery.\n");
3765
3766 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3767 ioa_cfg->sdt_state = GET_DUMP;
3768
3769 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3770
3771 LEAVE;
3772 return rc;
3773}
3774
df0ae249
JG		 3775static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3776{
3777 int rc;
3778
3779 spin_lock_irq(cmd->device->host->host_lock);
3780 rc = __ipr_eh_host_reset(cmd);
3781 spin_unlock_irq(cmd->device->host->host_lock);
3782
3783 return rc;
3784}
3785
c6513096
BK		 3786/**
3787 * ipr_device_reset - Reset the device
3788 * @ioa_cfg: ioa config struct
3789 * @res: resource entry struct
3790 *
3791 * This function issues a device reset to the affected device.
3792 * If the device is a SCSI device, a LUN reset will be sent
3793 * to the device first. If that does not work, a target reset
35a39691
BK		 3794 * will be sent. If the device is a SATA device, a PHY reset will
3795 * be sent.
c6513096
BK		 3796 *
3797 * Return value:
3798 * 0 on success / non-zero on failure
3799 **/
3800static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3801 struct ipr_resource_entry *res)
3802{
3803 struct ipr_cmnd *ipr_cmd;
3804 struct ipr_ioarcb *ioarcb;
3805 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3806 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3807 u32 ioasc;
3808
3809 ENTER;
3810 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3811 ioarcb = &ipr_cmd->ioarcb;
3812 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3813 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3814
3815 ioarcb->res_handle = res->cfgte.res_handle;
3816 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3817 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3818 if (ipr_is_gata(res)) {
3819 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3820 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3821 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3822 }
c6513096
BK		 3823
3824 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3825 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3826 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3827 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3828 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3829 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3830
3831 LEAVE;
3832 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3833}
3834
35a39691
BK		 3835/**
3836 * ipr_sata_reset - Reset the SATA port
cc0680a5 3837 * @link: SATA link to reset
35a39691
BK		 3838 * @classes: class of the attached device
3839 *
cc0680a5 3840 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 3841 *
3842 * Return value:
3843 * 0 on success / non-zero on failure
3844 **/
cc0680a5 3845static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 3846 unsigned long deadline)
35a39691 3847{
cc0680a5 3848 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 3849 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3850 struct ipr_resource_entry *res;
3851 unsigned long lock_flags = 0;
3852 int rc = -ENXIO;
3853
3854 ENTER;
3855 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3856 while(ioa_cfg->in_reset_reload) {
3857 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3858 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3859 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3860 }
3861
35a39691
BK		 3862 res = sata_port->res;
3863 if (res) {
3864 rc = ipr_device_reset(ioa_cfg, res);
3865 switch(res->cfgte.proto) {
3866 case IPR_PROTO_SATA:
3867 case IPR_PROTO_SAS_STP:
3868 *classes = ATA_DEV_ATA;
3869 break;
3870 case IPR_PROTO_SATA_ATAPI:
3871 case IPR_PROTO_SAS_STP_ATAPI:
3872 *classes = ATA_DEV_ATAPI;
3873 break;
3874 default:
3875 *classes = ATA_DEV_UNKNOWN;
3876 break;
3877 };
3878 }
3879
3880 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3881 LEAVE;
3882 return rc;
3883}
3884
1da177e4
LT		 3885/**
3886 * ipr_eh_dev_reset - Reset the device
3887 * @scsi_cmd: scsi command struct
3888 *
3889 * This function issues a device reset to the affected device.
3890 * A LUN reset will be sent to the device first. If that does
3891 * not work, a target reset will be sent.
3892 *
3893 * Return value:
3894 * SUCCESS / FAILED
3895 **/
94d0e7b8 3896static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3897{
3898 struct ipr_cmnd *ipr_cmd;
3899 struct ipr_ioa_cfg *ioa_cfg;
3900 struct ipr_resource_entry *res;
35a39691
BK		 3901 struct ata_port *ap;
3902 int rc = 0;
1da177e4
LT		 3903
3904 ENTER;
3905 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3906 res = scsi_cmd->device->hostdata;
3907
eeb88307 3908 if (!res)
1da177e4
LT		 3909 return FAILED;
3910
3911 /*
3912 * If we are currently going through reset/reload, return failed. This will force the
3913 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3914 * reset to complete
3915 */
3916 if (ioa_cfg->in_reset_reload)
3917 return FAILED;
3918 if (ioa_cfg->ioa_is_dead)
3919 return FAILED;
3920
3921 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3922 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3923 if (ipr_cmd->scsi_cmd)
3924 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3925 if (ipr_cmd->qc)
3926 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3927 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3928 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3929 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3930 }
1da177e4
LT		 3931 }
3932 }
3933
3934 res->resetting_device = 1;
fb3ed3cb 3935 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3936
3937 if (ipr_is_gata(res) && res->sata_port) {
3938 ap = res->sata_port->ap;
3939 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3940 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3941 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3942
3943 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3944 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3945 rc = -EIO;
3946 break;
3947 }
3948 }
35a39691
BK		 3949 } else
3950 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3951 res->resetting_device = 0;
3952
1da177e4 3953 LEAVE;
c6513096 3954 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3955}
3956
94d0e7b8
JG		 3957static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3958{
3959 int rc;
3960
3961 spin_lock_irq(cmd->device->host->host_lock);
3962 rc = __ipr_eh_dev_reset(cmd);
3963 spin_unlock_irq(cmd->device->host->host_lock);
3964
3965 return rc;
3966}
3967
1da177e4
LT		 3968/**
3969 * ipr_bus_reset_done - Op done function for bus reset.
3970 * @ipr_cmd: ipr command struct
3971 *
3972 * This function is the op done function for a bus reset
3973 *
3974 * Return value:
3975 * none
3976 **/
3977static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3978{
3979 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3980 struct ipr_resource_entry *res;
3981
3982 ENTER;
3983 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3984 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3985 sizeof(res->cfgte.res_handle))) {
3986 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3987 break;
3988 }
3989 }
3990
3991 /*
3992 * If abort has not completed, indicate the reset has, else call the
3993 * abort's done function to wake the sleeping eh thread
3994 */
3995 if (ipr_cmd->sibling->sibling)
3996 ipr_cmd->sibling->sibling = NULL;
3997 else
3998 ipr_cmd->sibling->done(ipr_cmd->sibling);
3999
4000 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4001 LEAVE;
4002}
4003
4004/**
4005 * ipr_abort_timeout - An abort task has timed out
4006 * @ipr_cmd: ipr command struct
4007 *
4008 * This function handles when an abort task times out. If this
4009 * happens we issue a bus reset since we have resources tied
4010 * up that must be freed before returning to the midlayer.
4011 *
4012 * Return value:
4013 * none
4014 **/
4015static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4016{
4017 struct ipr_cmnd *reset_cmd;
4018 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4019 struct ipr_cmd_pkt *cmd_pkt;
4020 unsigned long lock_flags = 0;
4021
4022 ENTER;
4023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4024 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4026 return;
4027 }
4028
fb3ed3cb 4029 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4030 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4031 ipr_cmd->sibling = reset_cmd;
4032 reset_cmd->sibling = ipr_cmd;
4033 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4034 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4035 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4036 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4037 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4038
4039 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4041 LEAVE;
4042}
4043
4044/**
4045 * ipr_cancel_op - Cancel specified op
4046 * @scsi_cmd: scsi command struct
4047 *
4048 * This function cancels specified op.
4049 *
4050 * Return value:
4051 * SUCCESS / FAILED
4052 **/
4053static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4054{
4055 struct ipr_cmnd *ipr_cmd;
4056 struct ipr_ioa_cfg *ioa_cfg;
4057 struct ipr_resource_entry *res;
4058 struct ipr_cmd_pkt *cmd_pkt;
4059 u32 ioasc;
4060 int op_found = 0;
4061
4062 ENTER;
4063 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4064 res = scsi_cmd->device->hostdata;
4065
8fa728a2
JG		 4066 /* If we are currently going through reset/reload, return failed.
4067 * This will force the mid-layer to call ipr_eh_host_reset,
4068 * which will then go to sleep and wait for the reset to complete
4069 */
4070 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4071 return FAILED;
04d9768f 4072 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4073 return FAILED;
4074
4075 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4076 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4077 ipr_cmd->done = ipr_scsi_eh_done;
4078 op_found = 1;
4079 break;
4080 }
4081 }
4082
4083 if (!op_found)
4084 return SUCCESS;
4085
4086 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4087 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4088 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4089 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4090 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4091 ipr_cmd->u.sdev = scsi_cmd->device;
4092
fb3ed3cb
BK		 4093 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4094 scsi_cmd->cmnd[0]);
1da177e4
LT		 4095 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4096 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4097
4098 /*
4099 * If the abort task timed out and we sent a bus reset, we will get
4100 * one the following responses to the abort
4101 */
4102 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4103 ioasc = 0;
4104 ipr_trace;
4105 }
4106
4107 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4108 if (!ipr_is_naca_model(res))
4109 res->needs_sync_complete = 1;
1da177e4
LT		 4110
4111 LEAVE;
4112 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4113}
4114
4115/**
4116 * ipr_eh_abort - Abort a single op
4117 * @scsi_cmd: scsi command struct
4118 *
4119 * Return value:
4120 * SUCCESS / FAILED
4121 **/
4122static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4123{
8fa728a2
JG		 4124 unsigned long flags;
4125 int rc;
1da177e4
LT		 4126
4127 ENTER;
1da177e4 4128
8fa728a2
JG		 4129 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4130 rc = ipr_cancel_op(scsi_cmd);
4131 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4132
4133 LEAVE;
8fa728a2 4134 return rc;
1da177e4
LT		 4135}
4136
4137/**
4138 * ipr_handle_other_interrupt - Handle "other" interrupts
4139 * @ioa_cfg: ioa config struct
4140 * @int_reg: interrupt register
4141 *
4142 * Return value:
4143 * IRQ_NONE / IRQ_HANDLED
4144 **/
4145static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4146 volatile u32 int_reg)
4147{
4148 irqreturn_t rc = IRQ_HANDLED;
4149
4150 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4151 /* Mask the interrupt */
4152 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4153
4154 /* Clear the interrupt */
4155 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4156 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4157
4158 list_del(&ioa_cfg->reset_cmd->queue);
4159 del_timer(&ioa_cfg->reset_cmd->timer);
4160 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4161 } else {
4162 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4163 ioa_cfg->ioa_unit_checked = 1;
4164 else
4165 dev_err(&ioa_cfg->pdev->dev,
4166 "Permanent IOA failure. 0x%08X\n", int_reg);
4167
4168 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4169 ioa_cfg->sdt_state = GET_DUMP;
4170
4171 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4172 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4173 }
4174
4175 return rc;
4176}
4177
4178/**
4179 * ipr_isr - Interrupt service routine
4180 * @irq: irq number
4181 * @devp: pointer to ioa config struct
1da177e4
LT		 4182 *
4183 * Return value:
4184 * IRQ_NONE / IRQ_HANDLED
4185 **/
7d12e780 4186static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4187{
4188 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4189 unsigned long lock_flags = 0;
4190 volatile u32 int_reg, int_mask_reg;
4191 u32 ioasc;
4192 u16 cmd_index;
4193 struct ipr_cmnd *ipr_cmd;
4194 irqreturn_t rc = IRQ_NONE;
4195
4196 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4197
4198 /* If interrupts are disabled, ignore the interrupt */
4199 if (!ioa_cfg->allow_interrupts) {
4200 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4201 return IRQ_NONE;
4202 }
4203
4204 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4205 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4206
4207 /* If an interrupt on the adapter did not occur, ignore it */
4208 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4210 return IRQ_NONE;
4211 }
4212
4213 while (1) {
4214 ipr_cmd = NULL;
4215
4216 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4217 ioa_cfg->toggle_bit) {
4218
4219 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4220 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4221
4222 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4223 ioa_cfg->errors_logged++;
4224 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4225
4226 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4227 ioa_cfg->sdt_state = GET_DUMP;
4228
4229 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4230 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4231 return IRQ_HANDLED;
4232 }
4233
4234 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4235
4236 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4237
4238 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4239
4240 list_del(&ipr_cmd->queue);
4241 del_timer(&ipr_cmd->timer);
4242 ipr_cmd->done(ipr_cmd);
4243
4244 rc = IRQ_HANDLED;
4245
4246 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4247 ioa_cfg->hrrq_curr++;
4248 } else {
4249 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4250 ioa_cfg->toggle_bit ^= 1u;
4251 }
4252 }
4253
4254 if (ipr_cmd != NULL) {
4255 /* Clear the PCI interrupt */
4256 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4257 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4258 } else
4259 break;
4260 }
4261
4262 if (unlikely(rc == IRQ_NONE))
4263 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4264
4265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4266 return rc;
4267}
4268
4269/**
4270 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4271 * @ioa_cfg: ioa config struct
4272 * @ipr_cmd: ipr command struct
4273 *
4274 * Return value:
4275 * 0 on success / -1 on failure
4276 **/
4277static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4278 struct ipr_cmnd *ipr_cmd)
4279{
63015bc9
FT		 4280 int i, nseg;
4281 struct scatterlist *sg;
1da177e4
LT		 4282 u32 length;
4283 u32 ioadl_flags = 0;
4284 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4285 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4286 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4287
63015bc9
FT		 4288 length = scsi_bufflen(scsi_cmd);
4289 if (!length)
1da177e4
LT		 4290 return 0;
4291
63015bc9
FT		 4292 nseg = scsi_dma_map(scsi_cmd);
4293 if (nseg < 0) {
4294 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4295 return -1;
4296 }
51b1c7e1 4297
63015bc9
FT		 4298 ipr_cmd->dma_use_sg = nseg;
4299
4300 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4301 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4302 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4303 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4304 ioarcb->write_ioadl_len =
4305 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4306 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4307 ioadl_flags = IPR_IOADL_FLAGS_READ;
4308 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4309 ioarcb->read_ioadl_len =
4310 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4311 }
1da177e4 4312
63015bc9
FT		 4313 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4314 ioadl = ioarcb->add_data.u.ioadl;
4315 ioarcb->write_ioadl_addr =
4316 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4317 offsetof(struct ipr_ioarcb, add_data));
4318 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4319 }
1da177e4 4320
63015bc9
FT		 4321 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4322 ioadl[i].flags_and_data_len =
4323 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4324 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4325 }
4326
63015bc9
FT		 4327 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4328 return 0;
1da177e4
LT		 4329}
4330
4331/**
4332 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4333 * @scsi_cmd: scsi command struct
4334 *
4335 * Return value:
4336 * task attributes
4337 **/
4338static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4339{
4340 u8 tag[2];
4341 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4342
4343 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4344 switch (tag[0]) {
4345 case MSG_SIMPLE_TAG:
4346 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4347 break;
4348 case MSG_HEAD_TAG:
4349 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4350 break;
4351 case MSG_ORDERED_TAG:
4352 rc = IPR_FLAGS_LO_ORDERED_TASK;
4353 break;
4354 };
4355 }
4356
4357 return rc;
4358}
4359
4360/**
4361 * ipr_erp_done - Process completion of ERP for a device
4362 * @ipr_cmd: ipr command struct
4363 *
4364 * This function copies the sense buffer into the scsi_cmd
4365 * struct and pushes the scsi_done function.
4366 *
4367 * Return value:
4368 * nothing
4369 **/
4370static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4371{
4372 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4373 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4374 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4375 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4376
4377 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4378 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4379 scmd_printk(KERN_ERR, scsi_cmd,
4380 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4381 } else {
4382 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4383 SCSI_SENSE_BUFFERSIZE);
4384 }
4385
4386 if (res) {
ee0a90fa
BK		 4387 if (!ipr_is_naca_model(res))
4388 res->needs_sync_complete = 1;
1da177e4
LT		 4389 res->in_erp = 0;
4390 }
63015bc9 4391 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4392 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4393 scsi_cmd->scsi_done(scsi_cmd);
4394}
4395
4396/**
4397 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4398 * @ipr_cmd: ipr command struct
4399 *
4400 * Return value:
4401 * none
4402 **/
4403static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4404{
51b1c7e1
BK		 4405 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4406 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4407 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4408
4409 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4410 ioarcb->write_data_transfer_length = 0;
4411 ioarcb->read_data_transfer_length = 0;
4412 ioarcb->write_ioadl_len = 0;
4413 ioarcb->read_ioadl_len = 0;
4414 ioasa->ioasc = 0;
4415 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4416 ioarcb->write_ioadl_addr =
4417 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4418 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4419}
4420
4421/**
4422 * ipr_erp_request_sense - Send request sense to a device
4423 * @ipr_cmd: ipr command struct
4424 *
4425 * This function sends a request sense to a device as a result
4426 * of a check condition.
4427 *
4428 * Return value:
4429 * nothing
4430 **/
4431static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4432{
4433 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4434 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4435
4436 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4437 ipr_erp_done(ipr_cmd);
4438 return;
4439 }
4440
4441 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4442
4443 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4444 cmd_pkt->cdb[0] = REQUEST_SENSE;
4445 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4446 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4447 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4448 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4449
4450 ipr_cmd->ioadl[0].flags_and_data_len =
4451 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4452 ipr_cmd->ioadl[0].address =
4453 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4454
4455 ipr_cmd->ioarcb.read_ioadl_len =
4456 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4457 ipr_cmd->ioarcb.read_data_transfer_length =
4458 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4459
4460 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4461 IPR_REQUEST_SENSE_TIMEOUT * 2);
4462}
4463
4464/**
4465 * ipr_erp_cancel_all - Send cancel all to a device
4466 * @ipr_cmd: ipr command struct
4467 *
4468 * This function sends a cancel all to a device to clear the
4469 * queue. If we are running TCQ on the device, QERR is set to 1,
4470 * which means all outstanding ops have been dropped on the floor.
4471 * Cancel all will return them to us.
4472 *
4473 * Return value:
4474 * nothing
4475 **/
4476static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4477{
4478 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4479 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4480 struct ipr_cmd_pkt *cmd_pkt;
4481
4482 res->in_erp = 1;
4483
4484 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4485
4486 if (!scsi_get_tag_type(scsi_cmd->device)) {
4487 ipr_erp_request_sense(ipr_cmd);
4488 return;
4489 }
4490
4491 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4492 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4493 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4494
4495 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4496 IPR_CANCEL_ALL_TIMEOUT);
4497}
4498
4499/**
4500 * ipr_dump_ioasa - Dump contents of IOASA
4501 * @ioa_cfg: ioa config struct
4502 * @ipr_cmd: ipr command struct
fe964d0a 4503 * @res: resource entry struct
1da177e4
LT		 4504 *
4505 * This function is invoked by the interrupt handler when ops
4506 * fail. It will log the IOASA if appropriate. Only called
4507 * for GPDD ops.
4508 *
4509 * Return value:
4510 * none
4511 **/
4512static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4513 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4514{
4515 int i;
4516 u16 data_len;
b0692dd4 4517 u32 ioasc, fd_ioasc;
1da177e4
LT		 4518 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4519 __be32 *ioasa_data = (__be32 *)ioasa;
4520 int error_index;
4521
4522 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4523 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4524
4525 if (0 == ioasc)
4526 return;
4527
4528 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4529 return;
4530
b0692dd4
BK		 4531 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4532 error_index = ipr_get_error(fd_ioasc);
4533 else
4534 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4535
4536 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4537 /* Don't log an error if the IOA already logged one */
4538 if (ioasa->ilid != 0)
4539 return;
4540
cc9bd5d4
BK		 4541 if (!ipr_is_gscsi(res))
4542 return;
4543
1da177e4
LT		 4544 if (ipr_error_table[error_index].log_ioasa == 0)
4545 return;
4546 }
4547
fe964d0a 4548 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4549
4550 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4551 data_len = sizeof(struct ipr_ioasa);
4552 else
4553 data_len = be16_to_cpu(ioasa->ret_stat_len);
4554
4555 ipr_err("IOASA Dump:\n");
4556
4557 for (i = 0; i < data_len / 4; i += 4) {
4558 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4559 be32_to_cpu(ioasa_data[i]),
4560 be32_to_cpu(ioasa_data[i+1]),
4561 be32_to_cpu(ioasa_data[i+2]),
4562 be32_to_cpu(ioasa_data[i+3]));
4563 }
4564}
4565
4566/**
4567 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4568 * @ioasa: IOASA
4569 * @sense_buf: sense data buffer
4570 *
4571 * Return value:
4572 * none
4573 **/
4574static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4575{
4576 u32 failing_lba;
4577 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4578 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4579 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4580 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4581
4582 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4583
4584 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4585 return;
4586
4587 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4588
4589 if (ipr_is_vset_device(res) &&
4590 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4591 ioasa->u.vset.failing_lba_hi != 0) {
4592 sense_buf[0] = 0x72;
4593 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4594 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4595 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4596
4597 sense_buf[7] = 12;
4598 sense_buf[8] = 0;
4599 sense_buf[9] = 0x0A;
4600 sense_buf[10] = 0x80;
4601
4602 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4603
4604 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4605 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4606 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4607 sense_buf[15] = failing_lba & 0x000000ff;
4608
4609 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4610
4611 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4612 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4613 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4614 sense_buf[19] = failing_lba & 0x000000ff;
4615 } else {
4616 sense_buf[0] = 0x70;
4617 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4618 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4619 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4620
4621 /* Illegal request */
4622 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4623 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4624 sense_buf[7] = 10; /* additional length */
4625
4626 /* IOARCB was in error */
4627 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4628 sense_buf[15] = 0xC0;
4629 else /* Parameter data was invalid */
4630 sense_buf[15] = 0x80;
4631
4632 sense_buf[16] =
4633 ((IPR_FIELD_POINTER_MASK &
4634 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4635 sense_buf[17] =
4636 (IPR_FIELD_POINTER_MASK &
4637 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4638 } else {
4639 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4640 if (ipr_is_vset_device(res))
4641 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4642 else
4643 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4644
4645 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4646 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4647 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4648 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4649 sense_buf[6] = failing_lba & 0x000000ff;
4650 }
4651
4652 sense_buf[7] = 6; /* additional length */
4653 }
4654 }
4655}
4656
ee0a90fa
BK		 4657/**
4658 * ipr_get_autosense - Copy autosense data to sense buffer
4659 * @ipr_cmd: ipr command struct
4660 *
4661 * This function copies the autosense buffer to the buffer
4662 * in the scsi_cmd, if there is autosense available.
4663 *
4664 * Return value:
4665 * 1 if autosense was available / 0 if not
4666 **/
4667static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4668{
4669 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4670
117d2ce1 4671 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4672 return 0;
4673
4674 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4675 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4676 SCSI_SENSE_BUFFERSIZE));
4677 return 1;
4678}
4679
1da177e4
LT		 4680/**
4681 * ipr_erp_start - Process an error response for a SCSI op
4682 * @ioa_cfg: ioa config struct
4683 * @ipr_cmd: ipr command struct
4684 *
4685 * This function determines whether or not to initiate ERP
4686 * on the affected device.
4687 *
4688 * Return value:
4689 * nothing
4690 **/
4691static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4692 struct ipr_cmnd *ipr_cmd)
4693{
4694 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4695 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4696 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4697 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4698
4699 if (!res) {
4700 ipr_scsi_eh_done(ipr_cmd);
4701 return;
4702 }
4703
8a048994 4704 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4705 ipr_gen_sense(ipr_cmd);
4706
cc9bd5d4
BK		 4707 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4708
8a048994 4709 switch (masked_ioasc) {
1da177e4 4710 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4711 if (ipr_is_naca_model(res))
4712 scsi_cmd->result |= (DID_ABORT << 16);
4713 else
4714 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4715 break;
4716 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4717 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4718 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4719 break;
4720 case IPR_IOASC_HW_SEL_TIMEOUT:
4721 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4722 if (!ipr_is_naca_model(res))
4723 res->needs_sync_complete = 1;
1da177e4
LT		 4724 break;
4725 case IPR_IOASC_SYNC_REQUIRED:
4726 if (!res->in_erp)
4727 res->needs_sync_complete = 1;
4728 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4729 break;
4730 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4731 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4732 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4733 break;
4734 case IPR_IOASC_BUS_WAS_RESET:
4735 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4736 /*
4737 * Report the bus reset and ask for a retry. The device
4738 * will give CC/UA the next command.
4739 */
4740 if (!res->resetting_device)
4741 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4742 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4743 if (!ipr_is_naca_model(res))
4744 res->needs_sync_complete = 1;
1da177e4
LT		 4745 break;
4746 case IPR_IOASC_HW_DEV_BUS_STATUS:
4747 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4748 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4749 if (!ipr_get_autosense(ipr_cmd)) {
4750 if (!ipr_is_naca_model(res)) {
4751 ipr_erp_cancel_all(ipr_cmd);
4752 return;
4753 }
4754 }
1da177e4 4755 }
ee0a90fa
BK		 4756 if (!ipr_is_naca_model(res))
4757 res->needs_sync_complete = 1;
1da177e4
LT		 4758 break;
4759 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4760 break;
4761 default:
5b7304fb
BK		 4762 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4763 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4764 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4765 res->needs_sync_complete = 1;
4766 break;
4767 }
4768
63015bc9 4769 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4770 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4771 scsi_cmd->scsi_done(scsi_cmd);
4772}
4773
4774/**
4775 * ipr_scsi_done - mid-layer done function
4776 * @ipr_cmd: ipr command struct
4777 *
4778 * This function is invoked by the interrupt handler for
4779 * ops generated by the SCSI mid-layer
4780 *
4781 * Return value:
4782 * none
4783 **/
4784static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4785{
4786 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4787 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4788 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4789
63015bc9 4790 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4791
4792 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4793 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4794 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4795 scsi_cmd->scsi_done(scsi_cmd);
4796 } else
4797 ipr_erp_start(ioa_cfg, ipr_cmd);
4798}
4799
1da177e4
LT		 4800/**
4801 * ipr_queuecommand - Queue a mid-layer request
4802 * @scsi_cmd: scsi command struct
4803 * @done: done function
4804 *
4805 * This function queues a request generated by the mid-layer.
4806 *
4807 * Return value:
4808 * 0 on success
4809 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4810 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4811 **/
4812static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4813 void (*done) (struct scsi_cmnd *))
4814{
4815 struct ipr_ioa_cfg *ioa_cfg;
4816 struct ipr_resource_entry *res;
4817 struct ipr_ioarcb *ioarcb;
4818 struct ipr_cmnd *ipr_cmd;
4819 int rc = 0;
4820
4821 scsi_cmd->scsi_done = done;
4822 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4823 res = scsi_cmd->device->hostdata;
4824 scsi_cmd->result = (DID_OK << 16);
4825
4826 /*
4827 * We are currently blocking all devices due to a host reset
4828 * We have told the host to stop giving us new requests, but
4829 * ERP ops don't count. FIXME
4830 */
4831 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4832 return SCSI_MLQUEUE_HOST_BUSY;
4833
4834 /*
4835 * FIXME - Create scsi_set_host_offline interface
4836 * and the ioa_is_dead check can be removed
4837 */
4838 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4839 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4840 scsi_cmd->result = (DID_NO_CONNECT << 16);
4841 scsi_cmd->scsi_done(scsi_cmd);
4842 return 0;
4843 }
4844
35a39691
BK		 4845 if (ipr_is_gata(res) && res->sata_port)
4846 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4847
1da177e4
LT		 4848 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4849 ioarcb = &ipr_cmd->ioarcb;
4850 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4851
4852 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4853 ipr_cmd->scsi_cmd = scsi_cmd;
4854 ioarcb->res_handle = res->cfgte.res_handle;
4855 ipr_cmd->done = ipr_scsi_done;
4856 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4857
4858 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4859 if (scsi_cmd->underflow == 0)
4860 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4861
4862 if (res->needs_sync_complete) {
4863 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4864 res->needs_sync_complete = 0;
4865 }
4866
4867 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4868 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4869 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4870 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4871 }
4872
4873 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4874 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4875 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4876
1da177e4
LT		 4877 if (likely(rc == 0))
4878 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4879
4880 if (likely(rc == 0)) {
4881 mb();
4882 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4883 ioa_cfg->regs.ioarrin_reg);
4884 } else {
4885 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4886 return SCSI_MLQUEUE_HOST_BUSY;
4887 }
4888
4889 return 0;
4890}
4891
35a39691
BK		 4892/**
4893 * ipr_ioctl - IOCTL handler
4894 * @sdev: scsi device struct
4895 * @cmd: IOCTL cmd
4896 * @arg: IOCTL arg
4897 *
4898 * Return value:
4899 * 0 on success / other on failure
4900 **/
bd705f2d 4901static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4902{
4903 struct ipr_resource_entry *res;
4904
4905 res = (struct ipr_resource_entry *)sdev->hostdata;
4906 if (res && ipr_is_gata(res))
4907 return ata_scsi_ioctl(sdev, cmd, arg);
4908
4909 return -EINVAL;
4910}
4911
1da177e4
LT		 4912/**
4913 * ipr_info - Get information about the card/driver
4914 * @scsi_host: scsi host struct
4915 *
4916 * Return value:
4917 * pointer to buffer with description string
4918 **/
4919static const char * ipr_ioa_info(struct Scsi_Host *host)
4920{
4921 static char buffer[512];
4922 struct ipr_ioa_cfg *ioa_cfg;
4923 unsigned long lock_flags = 0;
4924
4925 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4926
4927 spin_lock_irqsave(host->host_lock, lock_flags);
4928 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4929 spin_unlock_irqrestore(host->host_lock, lock_flags);
4930
4931 return buffer;
4932}
4933
4934static struct scsi_host_template driver_template = {
4935 .module = THIS_MODULE,
4936 .name = "IPR",
4937 .info = ipr_ioa_info,
35a39691 4938 .ioctl = ipr_ioctl,
1da177e4
LT		 4939 .queuecommand = ipr_queuecommand,
4940 .eh_abort_handler = ipr_eh_abort,
4941 .eh_device_reset_handler = ipr_eh_dev_reset,
4942 .eh_host_reset_handler = ipr_eh_host_reset,
4943 .slave_alloc = ipr_slave_alloc,
4944 .slave_configure = ipr_slave_configure,
4945 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4946 .target_alloc = ipr_target_alloc,
4947 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4948 .change_queue_depth = ipr_change_queue_depth,
4949 .change_queue_type = ipr_change_queue_type,
4950 .bios_param = ipr_biosparam,
4951 .can_queue = IPR_MAX_COMMANDS,
4952 .this_id = -1,
4953 .sg_tablesize = IPR_MAX_SGLIST,
4954 .max_sectors = IPR_IOA_MAX_SECTORS,
4955 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4956 .use_clustering = ENABLE_CLUSTERING,
4957 .shost_attrs = ipr_ioa_attrs,
4958 .sdev_attrs = ipr_dev_attrs,
4959 .proc_name = IPR_NAME
4960};
4961
35a39691
BK		 4962/**
4963 * ipr_ata_phy_reset - libata phy_reset handler
4964 * @ap: ata port to reset
4965 *
4966 **/
4967static void ipr_ata_phy_reset(struct ata_port *ap)
4968{
4969 unsigned long flags;
4970 struct ipr_sata_port *sata_port = ap->private_data;
4971 struct ipr_resource_entry *res = sata_port->res;
4972 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4973 int rc;
4974
4975 ENTER;
4976 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4977 while(ioa_cfg->in_reset_reload) {
4978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4979 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4980 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4981 }
4982
4983 if (!ioa_cfg->allow_cmds)
4984 goto out_unlock;
4985
4986 rc = ipr_device_reset(ioa_cfg, res);
4987
4988 if (rc) {
ac8869d5 4989 ata_port_disable(ap);
35a39691
BK		 4990 goto out_unlock;
4991 }
4992
4993 switch(res->cfgte.proto) {
4994 case IPR_PROTO_SATA:
4995 case IPR_PROTO_SAS_STP:
9af5c9c9 4996 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 4997 break;
4998 case IPR_PROTO_SATA_ATAPI:
4999 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 5000 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 5001 break;
5002 default:
9af5c9c9 5003 ap->link.device[0].class = ATA_DEV_UNKNOWN;
ac8869d5 5004 ata_port_disable(ap);
35a39691
BK		 5005 break;
5006 };
5007
5008out_unlock:
5009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5010 LEAVE;
5011}
5012
5013/**
5014 * ipr_ata_post_internal - Cleanup after an internal command
5015 * @qc: ATA queued command
5016 *
5017 * Return value:
5018 * none
5019 **/
5020static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5021{
5022 struct ipr_sata_port *sata_port = qc->ap->private_data;
5023 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5024 struct ipr_cmnd *ipr_cmd;
5025 unsigned long flags;
5026
5027 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5028 while(ioa_cfg->in_reset_reload) {
5029 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5030 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5031 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5032 }
5033
35a39691
BK		 5034 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5035 if (ipr_cmd->qc == qc) {
5036 ipr_device_reset(ioa_cfg, sata_port->res);
5037 break;
5038 }
5039 }
5040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5041}
5042
5043/**
5044 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5045 * @ap: ATA port
5046 * @tf: destination ATA taskfile
5047 *
5048 * Return value:
5049 * none
5050 **/
5051static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5052{
5053 struct ipr_sata_port *sata_port = ap->private_data;
5054 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5055
5056 tf->feature = g->error;
5057 tf->nsect = g->nsect;
5058 tf->lbal = g->lbal;
5059 tf->lbam = g->lbam;
5060 tf->lbah = g->lbah;
5061 tf->device = g->device;
5062 tf->command = g->status;
5063 tf->hob_nsect = g->hob_nsect;
5064 tf->hob_lbal = g->hob_lbal;
5065 tf->hob_lbam = g->hob_lbam;
5066 tf->hob_lbah = g->hob_lbah;
5067 tf->ctl = g->alt_status;
5068}
5069
5070/**
5071 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5072 * @regs: destination
5073 * @tf: source ATA taskfile
5074 *
5075 * Return value:
5076 * none
5077 **/
5078static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5079 struct ata_taskfile *tf)
5080{
5081 regs->feature = tf->feature;
5082 regs->nsect = tf->nsect;
5083 regs->lbal = tf->lbal;
5084 regs->lbam = tf->lbam;
5085 regs->lbah = tf->lbah;
5086 regs->device = tf->device;
5087 regs->command = tf->command;
5088 regs->hob_feature = tf->hob_feature;
5089 regs->hob_nsect = tf->hob_nsect;
5090 regs->hob_lbal = tf->hob_lbal;
5091 regs->hob_lbam = tf->hob_lbam;
5092 regs->hob_lbah = tf->hob_lbah;
5093 regs->ctl = tf->ctl;
5094}
5095
5096/**
5097 * ipr_sata_done - done function for SATA commands
5098 * @ipr_cmd: ipr command struct
5099 *
5100 * This function is invoked by the interrupt handler for
5101 * ops generated by the SCSI mid-layer to SATA devices
5102 *
5103 * Return value:
5104 * none
5105 **/
5106static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5107{
5108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5109 struct ata_queued_cmd *qc = ipr_cmd->qc;
5110 struct ipr_sata_port *sata_port = qc->ap->private_data;
5111 struct ipr_resource_entry *res = sata_port->res;
5112 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5113
5114 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5115 sizeof(struct ipr_ioasa_gata));
5116 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5117
5118 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5119 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5120 res->cfgte.res_addr.target);
5121
5122 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5123 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5124 else
5125 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5126 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5127 ata_qc_complete(qc);
5128}
5129
5130/**
5131 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5132 * @ipr_cmd: ipr command struct
5133 * @qc: ATA queued command
5134 *
5135 **/
5136static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5137 struct ata_queued_cmd *qc)
5138{
5139 u32 ioadl_flags = 0;
5140 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5141 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3be6cbd7 5142 struct ipr_ioadl_desc *last_ioadl = NULL;
35a39691
BK		 5143 int len = qc->nbytes + qc->pad_len;
5144 struct scatterlist *sg;
ff2aeb1e 5145 unsigned int si;
35a39691
BK		 5146
5147 if (len == 0)
5148 return;
5149
5150 if (qc->dma_dir == DMA_TO_DEVICE) {
5151 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5152 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5153 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5154 ioarcb->write_ioadl_len =
5155 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5156 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5157 ioadl_flags = IPR_IOADL_FLAGS_READ;
5158 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5159 ioarcb->read_ioadl_len =
5160 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5161 }
5162
ff2aeb1e 5163 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 5164 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5165 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 5166
5167 last_ioadl = ioadl;
5168 ioadl++;
35a39691 5169 }
3be6cbd7
JG		 5170
5171 if (likely(last_ioadl))
5172 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 5173}
5174
5175/**
5176 * ipr_qc_issue - Issue a SATA qc to a device
5177 * @qc: queued command
5178 *
5179 * Return value:
5180 * 0 if success
5181 **/
5182static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5183{
5184 struct ata_port *ap = qc->ap;
5185 struct ipr_sata_port *sata_port = ap->private_data;
5186 struct ipr_resource_entry *res = sata_port->res;
5187 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5188 struct ipr_cmnd *ipr_cmd;
5189 struct ipr_ioarcb *ioarcb;
5190 struct ipr_ioarcb_ata_regs *regs;
5191
5192 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5193 return AC_ERR_SYSTEM;
35a39691
BK		 5194
5195 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5196 ioarcb = &ipr_cmd->ioarcb;
5197 regs = &ioarcb->add_data.u.regs;
5198
5199 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5200 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5201
5202 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5203 ipr_cmd->qc = qc;
5204 ipr_cmd->done = ipr_sata_done;
5205 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5206 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5207 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5208 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5209 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5210
5211 ipr_build_ata_ioadl(ipr_cmd, qc);
5212 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5213 ipr_copy_sata_tf(regs, &qc->tf);
5214 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5215 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5216
5217 switch (qc->tf.protocol) {
5218 case ATA_PROT_NODATA:
5219 case ATA_PROT_PIO:
5220 break;
5221
5222 case ATA_PROT_DMA:
5223 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5224 break;
5225
0dc36888
TH		 5226 case ATAPI_PROT_PIO:
5227 case ATAPI_PROT_NODATA:
35a39691
BK		 5228 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5229 break;
5230
0dc36888 5231 case ATAPI_PROT_DMA:
35a39691
BK		 5232 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5233 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5234 break;
5235
5236 default:
5237 WARN_ON(1);
0feeed82 5238 return AC_ERR_INVALID;
35a39691
BK		 5239 }
5240
5241 mb();
5242 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5243 ioa_cfg->regs.ioarrin_reg);
5244 return 0;
5245}
5246
5247/**
5248 * ipr_ata_check_status - Return last ATA status
5249 * @ap: ATA port
5250 *
5251 * Return value:
5252 * ATA status
5253 **/
5254static u8 ipr_ata_check_status(struct ata_port *ap)
5255{
5256 struct ipr_sata_port *sata_port = ap->private_data;
5257 return sata_port->ioasa.status;
5258}
5259
5260/**
5261 * ipr_ata_check_altstatus - Return last ATA altstatus
5262 * @ap: ATA port
5263 *
5264 * Return value:
5265 * Alt ATA status
5266 **/
5267static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5268{
5269 struct ipr_sata_port *sata_port = ap->private_data;
5270 return sata_port->ioasa.alt_status;
5271}
5272
5273static struct ata_port_operations ipr_sata_ops = {
35a39691
BK		 5274 .check_status = ipr_ata_check_status,
5275 .check_altstatus = ipr_ata_check_altstatus,
5276 .dev_select = ata_noop_dev_select,
5277 .phy_reset = ipr_ata_phy_reset,
5278 .post_internal_cmd = ipr_ata_post_internal,
5279 .tf_read = ipr_tf_read,
5280 .qc_prep = ata_noop_qc_prep,
5281 .qc_issue = ipr_qc_issue,
5282 .port_start = ata_sas_port_start,
5283 .port_stop = ata_sas_port_stop
5284};
5285
5286static struct ata_port_info sata_port_info = {
5287 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5288 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5289 .pio_mask = 0x10, /* pio4 */
5290 .mwdma_mask = 0x07,
5291 .udma_mask = 0x7f, /* udma0-6 */
5292 .port_ops = &ipr_sata_ops
5293};
5294
1da177e4
LT		 5295#ifdef CONFIG_PPC_PSERIES
5296static const u16 ipr_blocked_processors[] = {
5297 PV_NORTHSTAR,
5298 PV_PULSAR,
5299 PV_POWER4,
5300 PV_ICESTAR,
5301 PV_SSTAR,
5302 PV_POWER4p,
5303 PV_630,
5304 PV_630p
5305};
5306
5307/**
5308 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5309 * @ioa_cfg: ioa cfg struct
5310 *
5311 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5312 * certain pSeries hardware. This function determines if the given
5313 * adapter is in one of these confgurations or not.
5314 *
5315 * Return value:
5316 * 1 if adapter is not supported / 0 if adapter is supported
5317 **/
5318static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5319{
1da177e4
LT		 5320 int i;
5321
44c10138
AK		 5322 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5323 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5324 if (__is_processor(ipr_blocked_processors[i]))
5325 return 1;
1da177e4
LT		 5326 }
5327 }
5328 return 0;
5329}
5330#else
5331#define ipr_invalid_adapter(ioa_cfg) 0
5332#endif
5333
5334/**
5335 * ipr_ioa_bringdown_done - IOA bring down completion.
5336 * @ipr_cmd: ipr command struct
5337 *
5338 * This function processes the completion of an adapter bring down.
5339 * It wakes any reset sleepers.
5340 *
5341 * Return value:
5342 * IPR_RC_JOB_RETURN
5343 **/
5344static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5345{
5346 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5347
5348 ENTER;
5349 ioa_cfg->in_reset_reload = 0;
5350 ioa_cfg->reset_retries = 0;
5351 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5352 wake_up_all(&ioa_cfg->reset_wait_q);
5353
5354 spin_unlock_irq(ioa_cfg->host->host_lock);
5355 scsi_unblock_requests(ioa_cfg->host);
5356 spin_lock_irq(ioa_cfg->host->host_lock);
5357 LEAVE;
5358
5359 return IPR_RC_JOB_RETURN;
5360}
5361
5362/**
5363 * ipr_ioa_reset_done - IOA reset completion.
5364 * @ipr_cmd: ipr command struct
5365 *
5366 * This function processes the completion of an adapter reset.
5367 * It schedules any necessary mid-layer add/removes and
5368 * wakes any reset sleepers.
5369 *
5370 * Return value:
5371 * IPR_RC_JOB_RETURN
5372 **/
5373static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5374{
5375 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5376 struct ipr_resource_entry *res;
5377 struct ipr_hostrcb *hostrcb, *temp;
5378 int i = 0;
5379
5380 ENTER;
5381 ioa_cfg->in_reset_reload = 0;
5382 ioa_cfg->allow_cmds = 1;
5383 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5384 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5385
5386 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5387 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5388 ipr_trace;
5389 break;
5390 }
5391 }
5392 schedule_work(&ioa_cfg->work_q);
5393
5394 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5395 list_del(&hostrcb->queue);
5396 if (i++ < IPR_NUM_LOG_HCAMS)
5397 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5398 else
5399 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5400 }
5401
6bb04170 5402 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5403 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5404
5405 ioa_cfg->reset_retries = 0;
5406 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5407 wake_up_all(&ioa_cfg->reset_wait_q);
5408
5409 spin_unlock_irq(ioa_cfg->host->host_lock);
5410 scsi_unblock_requests(ioa_cfg->host);
5411 spin_lock_irq(ioa_cfg->host->host_lock);
5412
5413 if (!ioa_cfg->allow_cmds)
5414 scsi_block_requests(ioa_cfg->host);
5415
5416 LEAVE;
5417 return IPR_RC_JOB_RETURN;
5418}
5419
5420/**
5421 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5422 * @supported_dev: supported device struct
5423 * @vpids: vendor product id struct
5424 *
5425 * Return value:
5426 * none
5427 **/
5428static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5429 struct ipr_std_inq_vpids *vpids)
5430{
5431 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5432 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5433 supported_dev->num_records = 1;
5434 supported_dev->data_length =
5435 cpu_to_be16(sizeof(struct ipr_supported_device));
5436 supported_dev->reserved = 0;
5437}
5438
5439/**
5440 * ipr_set_supported_devs - Send Set Supported Devices for a device
5441 * @ipr_cmd: ipr command struct
5442 *
5443 * This function send a Set Supported Devices to the adapter
5444 *
5445 * Return value:
5446 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5447 **/
5448static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5449{
5450 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5451 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5452 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5453 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5454 struct ipr_resource_entry *res = ipr_cmd->u.res;
5455
5456 ipr_cmd->job_step = ipr_ioa_reset_done;
5457
5458 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5459 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5460 continue;
5461
5462 ipr_cmd->u.res = res;
5463 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5464
5465 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5466 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5467 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5468
5469 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5470 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5471 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5472
5473 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5474 sizeof(struct ipr_supported_device));
5475 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5476 offsetof(struct ipr_misc_cbs, supp_dev));
5477 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5478 ioarcb->write_data_transfer_length =
5479 cpu_to_be32(sizeof(struct ipr_supported_device));
5480
5481 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5482 IPR_SET_SUP_DEVICE_TIMEOUT);
5483
5484 ipr_cmd->job_step = ipr_set_supported_devs;
5485 return IPR_RC_JOB_RETURN;
5486 }
5487
5488 return IPR_RC_JOB_CONTINUE;
5489}
5490
62275040
BK		 5491/**
5492 * ipr_setup_write_cache - Disable write cache if needed
5493 * @ipr_cmd: ipr command struct
5494 *
5495 * This function sets up adapters write cache to desired setting
5496 *
5497 * Return value:
5498 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5499 **/
5500static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5501{
5502 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5503
5504 ipr_cmd->job_step = ipr_set_supported_devs;
5505 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5506 struct ipr_resource_entry, queue);
5507
5508 if (ioa_cfg->cache_state != CACHE_DISABLED)
5509 return IPR_RC_JOB_CONTINUE;
5510
5511 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5512 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5513 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5514 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5515
5516 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5517
5518 return IPR_RC_JOB_RETURN;
5519}
5520
1da177e4
LT		 5521/**
5522 * ipr_get_mode_page - Locate specified mode page
5523 * @mode_pages: mode page buffer
5524 * @page_code: page code to find
5525 * @len: minimum required length for mode page
5526 *
5527 * Return value:
5528 * pointer to mode page / NULL on failure
5529 **/
5530static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5531 u32 page_code, u32 len)
5532{
5533 struct ipr_mode_page_hdr *mode_hdr;
5534 u32 page_length;
5535 u32 length;
5536
5537 if (!mode_pages || (mode_pages->hdr.length == 0))
5538 return NULL;
5539
5540 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5541 mode_hdr = (struct ipr_mode_page_hdr *)
5542 (mode_pages->data + mode_pages->hdr.block_desc_len);
5543
5544 while (length) {
5545 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5546 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5547 return mode_hdr;
5548 break;
5549 } else {
5550 page_length = (sizeof(struct ipr_mode_page_hdr) +
5551 mode_hdr->page_length);
5552 length -= page_length;
5553 mode_hdr = (struct ipr_mode_page_hdr *)
5554 ((unsigned long)mode_hdr + page_length);
5555 }
5556 }
5557 return NULL;
5558}
5559
5560/**
5561 * ipr_check_term_power - Check for term power errors
5562 * @ioa_cfg: ioa config struct
5563 * @mode_pages: IOAFP mode pages buffer
5564 *
5565 * Check the IOAFP's mode page 28 for term power errors
5566 *
5567 * Return value:
5568 * nothing
5569 **/
5570static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5571 struct ipr_mode_pages *mode_pages)
5572{
5573 int i;
5574 int entry_length;
5575 struct ipr_dev_bus_entry *bus;
5576 struct ipr_mode_page28 *mode_page;
5577
5578 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5579 sizeof(struct ipr_mode_page28));
5580
5581 entry_length = mode_page->entry_length;
5582
5583 bus = mode_page->bus;
5584
5585 for (i = 0; i < mode_page->num_entries; i++) {
5586 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5587 dev_err(&ioa_cfg->pdev->dev,
5588 "Term power is absent on scsi bus %d\n",
5589 bus->res_addr.bus);
5590 }
5591
5592 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5593 }
5594}
5595
5596/**
5597 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5598 * @ioa_cfg: ioa config struct
5599 *
5600 * Looks through the config table checking for SES devices. If
5601 * the SES device is in the SES table indicating a maximum SCSI
5602 * bus speed, the speed is limited for the bus.
5603 *
5604 * Return value:
5605 * none
5606 **/
5607static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5608{
5609 u32 max_xfer_rate;
5610 int i;
5611
5612 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5613 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5614 ioa_cfg->bus_attr[i].bus_width);
5615
5616 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5617 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5618 }
5619}
5620
5621/**
5622 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5623 * @ioa_cfg: ioa config struct
5624 * @mode_pages: mode page 28 buffer
5625 *
5626 * Updates mode page 28 based on driver configuration
5627 *
5628 * Return value:
5629 * none
5630 **/
5631static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5632 struct ipr_mode_pages *mode_pages)
5633{
5634 int i, entry_length;
5635 struct ipr_dev_bus_entry *bus;
5636 struct ipr_bus_attributes *bus_attr;
5637 struct ipr_mode_page28 *mode_page;
5638
5639 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5640 sizeof(struct ipr_mode_page28));
5641
5642 entry_length = mode_page->entry_length;
5643
5644 /* Loop for each device bus entry */
5645 for (i = 0, bus = mode_page->bus;
5646 i < mode_page->num_entries;
5647 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5648 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5649 dev_err(&ioa_cfg->pdev->dev,
5650 "Invalid resource address reported: 0x%08X\n",
5651 IPR_GET_PHYS_LOC(bus->res_addr));
5652 continue;
5653 }
5654
5655 bus_attr = &ioa_cfg->bus_attr[i];
5656 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5657 bus->bus_width = bus_attr->bus_width;
5658 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5659 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5660 if (bus_attr->qas_enabled)
5661 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5662 else
5663 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5664 }
5665}
5666
5667/**
5668 * ipr_build_mode_select - Build a mode select command
5669 * @ipr_cmd: ipr command struct
5670 * @res_handle: resource handle to send command to
5671 * @parm: Byte 2 of Mode Sense command
5672 * @dma_addr: DMA buffer address
5673 * @xfer_len: data transfer length
5674 *
5675 * Return value:
5676 * none
5677 **/
5678static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5679 __be32 res_handle, u8 parm, u32 dma_addr,
5680 u8 xfer_len)
5681{
5682 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5683 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5684
5685 ioarcb->res_handle = res_handle;
5686 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5687 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5688 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5689 ioarcb->cmd_pkt.cdb[1] = parm;
5690 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5691
5692 ioadl->flags_and_data_len =
5693 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5694 ioadl->address = cpu_to_be32(dma_addr);
5695 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5696 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5697}
5698
5699/**
5700 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5701 * @ipr_cmd: ipr command struct
5702 *
5703 * This function sets up the SCSI bus attributes and sends
5704 * a Mode Select for Page 28 to activate them.
5705 *
5706 * Return value:
5707 * IPR_RC_JOB_RETURN
5708 **/
5709static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5710{
5711 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5712 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5713 int length;
5714
5715 ENTER;
4733804c
BK		 5716 ipr_scsi_bus_speed_limit(ioa_cfg);
5717 ipr_check_term_power(ioa_cfg, mode_pages);
5718 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5719 length = mode_pages->hdr.length + 1;
5720 mode_pages->hdr.length = 0;
1da177e4
LT		 5721
5722 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5723 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5724 length);
5725
62275040 5726 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5727 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5728
5729 LEAVE;
5730 return IPR_RC_JOB_RETURN;
5731}
5732
5733/**
5734 * ipr_build_mode_sense - Builds a mode sense command
5735 * @ipr_cmd: ipr command struct
5736 * @res: resource entry struct
5737 * @parm: Byte 2 of mode sense command
5738 * @dma_addr: DMA address of mode sense buffer
5739 * @xfer_len: Size of DMA buffer
5740 *
5741 * Return value:
5742 * none
5743 **/
5744static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5745 __be32 res_handle,
5746 u8 parm, u32 dma_addr, u8 xfer_len)
5747{
5748 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5749 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5750
5751 ioarcb->res_handle = res_handle;
5752 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5753 ioarcb->cmd_pkt.cdb[2] = parm;
5754 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5755 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5756
5757 ioadl->flags_and_data_len =
5758 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5759 ioadl->address = cpu_to_be32(dma_addr);
5760 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5761 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5762}
5763
dfed823e
BK		 5764/**
5765 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5766 * @ipr_cmd: ipr command struct
5767 *
5768 * This function handles the failure of an IOA bringup command.
5769 *
5770 * Return value:
5771 * IPR_RC_JOB_RETURN
5772 **/
5773static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5774{
5775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5776 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5777
5778 dev_err(&ioa_cfg->pdev->dev,
5779 "0x%02X failed with IOASC: 0x%08X\n",
5780 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5781
5782 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5784 return IPR_RC_JOB_RETURN;
5785}
5786
5787/**
5788 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5789 * @ipr_cmd: ipr command struct
5790 *
5791 * This function handles the failure of a Mode Sense to the IOAFP.
5792 * Some adapters do not handle all mode pages.
5793 *
5794 * Return value:
5795 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5796 **/
5797static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5798{
5799 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5800
5801 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5802 ipr_cmd->job_step = ipr_setup_write_cache;
5803 return IPR_RC_JOB_CONTINUE;
5804 }
5805
5806 return ipr_reset_cmd_failed(ipr_cmd);
5807}
5808
1da177e4
LT		 5809/**
5810 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5811 * @ipr_cmd: ipr command struct
5812 *
5813 * This function send a Page 28 mode sense to the IOA to
5814 * retrieve SCSI bus attributes.
5815 *
5816 * Return value:
5817 * IPR_RC_JOB_RETURN
5818 **/
5819static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5820{
5821 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5822
5823 ENTER;
5824 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5825 0x28, ioa_cfg->vpd_cbs_dma +
5826 offsetof(struct ipr_misc_cbs, mode_pages),
5827 sizeof(struct ipr_mode_pages));
5828
5829 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5830 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5831
5832 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5833
5834 LEAVE;
5835 return IPR_RC_JOB_RETURN;
5836}
5837
ac09c349
BK		 5838/**
5839 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5840 * @ipr_cmd: ipr command struct
5841 *
5842 * This function enables dual IOA RAID support if possible.
5843 *
5844 * Return value:
5845 * IPR_RC_JOB_RETURN
5846 **/
5847static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5848{
5849 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5850 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5851 struct ipr_mode_page24 *mode_page;
5852 int length;
5853
5854 ENTER;
5855 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5856 sizeof(struct ipr_mode_page24));
5857
5858 if (mode_page)
5859 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5860
5861 length = mode_pages->hdr.length + 1;
5862 mode_pages->hdr.length = 0;
5863
5864 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5865 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5866 length);
5867
5868 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5869 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5870
5871 LEAVE;
5872 return IPR_RC_JOB_RETURN;
5873}
5874
5875/**
5876 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5877 * @ipr_cmd: ipr command struct
5878 *
5879 * This function handles the failure of a Mode Sense to the IOAFP.
5880 * Some adapters do not handle all mode pages.
5881 *
5882 * Return value:
5883 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5884 **/
5885static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5886{
5887 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5888
5889 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5890 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5891 return IPR_RC_JOB_CONTINUE;
5892 }
5893
5894 return ipr_reset_cmd_failed(ipr_cmd);
5895}
5896
5897/**
5898 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5899 * @ipr_cmd: ipr command struct
5900 *
5901 * This function send a mode sense to the IOA to retrieve
5902 * the IOA Advanced Function Control mode page.
5903 *
5904 * Return value:
5905 * IPR_RC_JOB_RETURN
5906 **/
5907static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5908{
5909 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5910
5911 ENTER;
5912 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5913 0x24, ioa_cfg->vpd_cbs_dma +
5914 offsetof(struct ipr_misc_cbs, mode_pages),
5915 sizeof(struct ipr_mode_pages));
5916
5917 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5918 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5919
5920 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5921
5922 LEAVE;
5923 return IPR_RC_JOB_RETURN;
5924}
5925
1da177e4
LT		 5926/**
5927 * ipr_init_res_table - Initialize the resource table
5928 * @ipr_cmd: ipr command struct
5929 *
5930 * This function looks through the existing resource table, comparing
5931 * it with the config table. This function will take care of old/new
5932 * devices and schedule adding/removing them from the mid-layer
5933 * as appropriate.
5934 *
5935 * Return value:
5936 * IPR_RC_JOB_CONTINUE
5937 **/
5938static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5939{
5940 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5941 struct ipr_resource_entry *res, *temp;
5942 struct ipr_config_table_entry *cfgte;
5943 int found, i;
5944 LIST_HEAD(old_res);
5945
5946 ENTER;
5947 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5948 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5949
5950 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5951 list_move_tail(&res->queue, &old_res);
5952
5953 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5954 cfgte = &ioa_cfg->cfg_table->dev[i];
5955 found = 0;
5956
5957 list_for_each_entry_safe(res, temp, &old_res, queue) {
5958 if (!memcmp(&res->cfgte.res_addr,
5959 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5960 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5961 found = 1;
5962 break;
5963 }
5964 }
5965
5966 if (!found) {
5967 if (list_empty(&ioa_cfg->free_res_q)) {
5968 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5969 break;
5970 }
5971
5972 found = 1;
5973 res = list_entry(ioa_cfg->free_res_q.next,
5974 struct ipr_resource_entry, queue);
5975 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5976 ipr_init_res_entry(res);
5977 res->add_to_ml = 1;
5978 }
5979
5980 if (found)
5981 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5982 }
5983
5984 list_for_each_entry_safe(res, temp, &old_res, queue) {
5985 if (res->sdev) {
5986 res->del_from_ml = 1;
1121b794 5987 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5988 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5989 } else {
5990 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5991 }
5992 }
5993
ac09c349
BK		 5994 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5995 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5996 else
5997 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5998
5999 LEAVE;
6000 return IPR_RC_JOB_CONTINUE;
6001}
6002
6003/**
6004 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6005 * @ipr_cmd: ipr command struct
6006 *
6007 * This function sends a Query IOA Configuration command
6008 * to the adapter to retrieve the IOA configuration table.
6009 *
6010 * Return value:
6011 * IPR_RC_JOB_RETURN
6012 **/
6013static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6014{
6015 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6016 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6017 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6018 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6019 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6020
6021 ENTER;
ac09c349
BK		 6022 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6023 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6024 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6025 ucode_vpd->major_release, ucode_vpd->card_type,
6026 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6027 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6028 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6029
6030 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6031 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6032 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6033
6034 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6035 ioarcb->read_data_transfer_length =
6036 cpu_to_be32(sizeof(struct ipr_config_table));
6037
6038 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6039 ioadl->flags_and_data_len =
6040 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6041
6042 ipr_cmd->job_step = ipr_init_res_table;
6043
6044 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6045
6046 LEAVE;
6047 return IPR_RC_JOB_RETURN;
6048}
6049
6050/**
6051 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6052 * @ipr_cmd: ipr command struct
6053 *
6054 * This utility function sends an inquiry to the adapter.
6055 *
6056 * Return value:
6057 * none
6058 **/
6059static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6060 u32 dma_addr, u8 xfer_len)
6061{
6062 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6063 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6064
6065 ENTER;
6066 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6067 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6068
6069 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6070 ioarcb->cmd_pkt.cdb[1] = flags;
6071 ioarcb->cmd_pkt.cdb[2] = page;
6072 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6073
6074 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6075 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6076
6077 ioadl->address = cpu_to_be32(dma_addr);
6078 ioadl->flags_and_data_len =
6079 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6080
6081 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6082 LEAVE;
6083}
6084
62275040
BK		 6085/**
6086 * ipr_inquiry_page_supported - Is the given inquiry page supported
6087 * @page0: inquiry page 0 buffer
6088 * @page: page code.
6089 *
6090 * This function determines if the specified inquiry page is supported.
6091 *
6092 * Return value:
6093 * 1 if page is supported / 0 if not
6094 **/
6095static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6096{
6097 int i;
6098
6099 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6100 if (page0->page[i] == page)
6101 return 1;
6102
6103 return 0;
6104}
6105
ac09c349
BK		 6106/**
6107 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6108 * @ipr_cmd: ipr command struct
6109 *
6110 * This function sends a Page 0xD0 inquiry to the adapter
6111 * to retrieve adapter capabilities.
6112 *
6113 * Return value:
6114 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6115 **/
6116static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6117{
6118 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6119 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6120 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6121
6122 ENTER;
6123 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6124 memset(cap, 0, sizeof(*cap));
6125
6126 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6127 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6128 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6129 sizeof(struct ipr_inquiry_cap));
6130 return IPR_RC_JOB_RETURN;
6131 }
6132
6133 LEAVE;
6134 return IPR_RC_JOB_CONTINUE;
6135}
6136
1da177e4
LT		 6137/**
6138 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6139 * @ipr_cmd: ipr command struct
6140 *
6141 * This function sends a Page 3 inquiry to the adapter
6142 * to retrieve software VPD information.
6143 *
6144 * Return value:
6145 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6146 **/
6147static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6148{
6149 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6150 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6151
6152 ENTER;
6153
6154 if (!ipr_inquiry_page_supported(page0, 1))
6155 ioa_cfg->cache_state = CACHE_NONE;
6156
ac09c349 6157 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6158
6159 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6160 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6161 sizeof(struct ipr_inquiry_page3));
6162
6163 LEAVE;
6164 return IPR_RC_JOB_RETURN;
6165}
6166
6167/**
6168 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6169 * @ipr_cmd: ipr command struct
6170 *
6171 * This function sends a Page 0 inquiry to the adapter
6172 * to retrieve supported inquiry pages.
6173 *
6174 * Return value:
6175 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6176 **/
6177static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6178{
6179 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6180 char type[5];
6181
6182 ENTER;
6183
6184 /* Grab the type out of the VPD and store it away */
6185 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6186 type[4] = '\0';
6187 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6188
62275040 6189 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6190
62275040
BK		 6191 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6192 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6193 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6194
6195 LEAVE;
6196 return IPR_RC_JOB_RETURN;
6197}
6198
6199/**
6200 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6201 * @ipr_cmd: ipr command struct
6202 *
6203 * This function sends a standard inquiry to the adapter.
6204 *
6205 * Return value:
6206 * IPR_RC_JOB_RETURN
6207 **/
6208static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6209{
6210 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6211
6212 ENTER;
62275040 6213 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6214
6215 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6216 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6217 sizeof(struct ipr_ioa_vpd));
6218
6219 LEAVE;
6220 return IPR_RC_JOB_RETURN;
6221}
6222
6223/**
6224 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6225 * @ipr_cmd: ipr command struct
6226 *
6227 * This function send an Identify Host Request Response Queue
6228 * command to establish the HRRQ with the adapter.
6229 *
6230 * Return value:
6231 * IPR_RC_JOB_RETURN
6232 **/
6233static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6234{
6235 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6236 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6237
6238 ENTER;
6239 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6240
6241 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6242 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6243
6244 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6245 ioarcb->cmd_pkt.cdb[2] =
6246 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6247 ioarcb->cmd_pkt.cdb[3] =
6248 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6249 ioarcb->cmd_pkt.cdb[4] =
6250 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6251 ioarcb->cmd_pkt.cdb[5] =
6252 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6253 ioarcb->cmd_pkt.cdb[7] =
6254 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6255 ioarcb->cmd_pkt.cdb[8] =
6256 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6257
6258 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6259
6260 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6261
6262 LEAVE;
6263 return IPR_RC_JOB_RETURN;
6264}
6265
6266/**
6267 * ipr_reset_timer_done - Adapter reset timer function
6268 * @ipr_cmd: ipr command struct
6269 *
6270 * Description: This function is used in adapter reset processing
6271 * for timing events. If the reset_cmd pointer in the IOA
6272 * config struct is not this adapter's we are doing nested
6273 * resets and fail_all_ops will take care of freeing the
6274 * command block.
6275 *
6276 * Return value:
6277 * none
6278 **/
6279static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6280{
6281 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6282 unsigned long lock_flags = 0;
6283
6284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6285
6286 if (ioa_cfg->reset_cmd == ipr_cmd) {
6287 list_del(&ipr_cmd->queue);
6288 ipr_cmd->done(ipr_cmd);
6289 }
6290
6291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6292}
6293
6294/**
6295 * ipr_reset_start_timer - Start a timer for adapter reset job
6296 * @ipr_cmd: ipr command struct
6297 * @timeout: timeout value
6298 *
6299 * Description: This function is used in adapter reset processing
6300 * for timing events. If the reset_cmd pointer in the IOA
6301 * config struct is not this adapter's we are doing nested
6302 * resets and fail_all_ops will take care of freeing the
6303 * command block.
6304 *
6305 * Return value:
6306 * none
6307 **/
6308static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6309 unsigned long timeout)
6310{
6311 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6312 ipr_cmd->done = ipr_reset_ioa_job;
6313
6314 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6315 ipr_cmd->timer.expires = jiffies + timeout;
6316 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6317 add_timer(&ipr_cmd->timer);
6318}
6319
6320/**
6321 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6322 * @ioa_cfg: ioa cfg struct
6323 *
6324 * Return value:
6325 * nothing
6326 **/
6327static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6328{
6329 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6330
6331 /* Initialize Host RRQ pointers */
6332 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6333 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6334 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6335 ioa_cfg->toggle_bit = 1;
6336
6337 /* Zero out config table */
6338 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6339}
6340
6341/**
6342 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6343 * @ipr_cmd: ipr command struct
6344 *
6345 * This function reinitializes some control blocks and
6346 * enables destructive diagnostics on the adapter.
6347 *
6348 * Return value:
6349 * IPR_RC_JOB_RETURN
6350 **/
6351static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6352{
6353 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6354 volatile u32 int_reg;
6355
6356 ENTER;
6357 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6358 ipr_init_ioa_mem(ioa_cfg);
6359
6360 ioa_cfg->allow_interrupts = 1;
6361 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6362
6363 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6364 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6365 ioa_cfg->regs.clr_interrupt_mask_reg);
6366 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6367 return IPR_RC_JOB_CONTINUE;
6368 }
6369
6370 /* Enable destructive diagnostics on IOA */
3d1d0da6 6371 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6372
6373 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6374 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6375
6376 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6377
6378 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6379 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6380 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6381 ipr_cmd->done = ipr_reset_ioa_job;
6382 add_timer(&ipr_cmd->timer);
6383 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6384
6385 LEAVE;
6386 return IPR_RC_JOB_RETURN;
6387}
6388
6389/**
6390 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6391 * @ipr_cmd: ipr command struct
6392 *
6393 * This function is invoked when an adapter dump has run out
6394 * of processing time.
6395 *
6396 * Return value:
6397 * IPR_RC_JOB_CONTINUE
6398 **/
6399static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6400{
6401 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6402
6403 if (ioa_cfg->sdt_state == GET_DUMP)
6404 ioa_cfg->sdt_state = ABORT_DUMP;
6405
6406 ipr_cmd->job_step = ipr_reset_alert;
6407
6408 return IPR_RC_JOB_CONTINUE;
6409}
6410
6411/**
6412 * ipr_unit_check_no_data - Log a unit check/no data error log
6413 * @ioa_cfg: ioa config struct
6414 *
6415 * Logs an error indicating the adapter unit checked, but for some
6416 * reason, we were unable to fetch the unit check buffer.
6417 *
6418 * Return value:
6419 * nothing
6420 **/
6421static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6422{
6423 ioa_cfg->errors_logged++;
6424 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6425}
6426
6427/**
6428 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6429 * @ioa_cfg: ioa config struct
6430 *
6431 * Fetches the unit check buffer from the adapter by clocking the data
6432 * through the mailbox register.
6433 *
6434 * Return value:
6435 * nothing
6436 **/
6437static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6438{
6439 unsigned long mailbox;
6440 struct ipr_hostrcb *hostrcb;
6441 struct ipr_uc_sdt sdt;
6442 int rc, length;
65f56475 6443 u32 ioasc;
1da177e4
LT		 6444
6445 mailbox = readl(ioa_cfg->ioa_mailbox);
6446
6447 if (!ipr_sdt_is_fmt2(mailbox)) {
6448 ipr_unit_check_no_data(ioa_cfg);
6449 return;
6450 }
6451
6452 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6453 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6454 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6455
6456 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6457 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6458 ipr_unit_check_no_data(ioa_cfg);
6459 return;
6460 }
6461
6462 /* Find length of the first sdt entry (UC buffer) */
6463 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6464 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6465
6466 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6467 struct ipr_hostrcb, queue);
6468 list_del(&hostrcb->queue);
6469 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6470
6471 rc = ipr_get_ldump_data_section(ioa_cfg,
6472 be32_to_cpu(sdt.entry[0].bar_str_offset),
6473 (__be32 *)&hostrcb->hcam,
6474 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6475
65f56475 6476 if (!rc) {
1da177e4 6477 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6478 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6479 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6480 ioa_cfg->sdt_state == GET_DUMP)
6481 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6482 } else
1da177e4
LT		 6483 ipr_unit_check_no_data(ioa_cfg);
6484
6485 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6486}
6487
6488/**
6489 * ipr_reset_restore_cfg_space - Restore PCI config space.
6490 * @ipr_cmd: ipr command struct
6491 *
6492 * Description: This function restores the saved PCI config space of
6493 * the adapter, fails all outstanding ops back to the callers, and
6494 * fetches the dump/unit check if applicable to this reset.
6495 *
6496 * Return value:
6497 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6498 **/
6499static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6500{
6501 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6502 int rc;
6503
6504 ENTER;
6505 rc = pci_restore_state(ioa_cfg->pdev);
6506
6507 if (rc != PCIBIOS_SUCCESSFUL) {
6508 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6509 return IPR_RC_JOB_CONTINUE;
6510 }
6511
6512 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6513 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6514 return IPR_RC_JOB_CONTINUE;
6515 }
6516
6517 ipr_fail_all_ops(ioa_cfg);
6518
6519 if (ioa_cfg->ioa_unit_checked) {
6520 ioa_cfg->ioa_unit_checked = 0;
6521 ipr_get_unit_check_buffer(ioa_cfg);
6522 ipr_cmd->job_step = ipr_reset_alert;
6523 ipr_reset_start_timer(ipr_cmd, 0);
6524 return IPR_RC_JOB_RETURN;
6525 }
6526
6527 if (ioa_cfg->in_ioa_bringdown) {
6528 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6529 } else {
6530 ipr_cmd->job_step = ipr_reset_enable_ioa;
6531
6532 if (GET_DUMP == ioa_cfg->sdt_state) {
6533 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6534 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6535 schedule_work(&ioa_cfg->work_q);
6536 return IPR_RC_JOB_RETURN;
6537 }
6538 }
6539
6540 ENTER;
6541 return IPR_RC_JOB_CONTINUE;
6542}
6543
e619e1a7
BK		 6544/**
6545 * ipr_reset_bist_done - BIST has completed on the adapter.
6546 * @ipr_cmd: ipr command struct
6547 *
6548 * Description: Unblock config space and resume the reset process.
6549 *
6550 * Return value:
6551 * IPR_RC_JOB_CONTINUE
6552 **/
6553static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6554{
6555 ENTER;
6556 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6557 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6558 LEAVE;
6559 return IPR_RC_JOB_CONTINUE;
6560}
6561
1da177e4
LT		 6562/**
6563 * ipr_reset_start_bist - Run BIST on the adapter.
6564 * @ipr_cmd: ipr command struct
6565 *
6566 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6567 *
6568 * Return value:
6569 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6570 **/
6571static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6572{
6573 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6574 int rc;
6575
6576 ENTER;
b30197d2 6577 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6578 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6579
6580 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6581 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6582 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6583 rc = IPR_RC_JOB_CONTINUE;
6584 } else {
e619e1a7 6585 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6586 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6587 rc = IPR_RC_JOB_RETURN;
6588 }
6589
6590 LEAVE;
6591 return rc;
6592}
6593
463fc696
BK		 6594/**
6595 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6596 * @ipr_cmd: ipr command struct
6597 *
6598 * Description: This clears PCI reset to the adapter and delays two seconds.
6599 *
6600 * Return value:
6601 * IPR_RC_JOB_RETURN
6602 **/
6603static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6604{
6605 ENTER;
6606 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6607 ipr_cmd->job_step = ipr_reset_bist_done;
6608 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6609 LEAVE;
6610 return IPR_RC_JOB_RETURN;
6611}
6612
6613/**
6614 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6615 * @ipr_cmd: ipr command struct
6616 *
6617 * Description: This asserts PCI reset to the adapter.
6618 *
6619 * Return value:
6620 * IPR_RC_JOB_RETURN
6621 **/
6622static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6623{
6624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6625 struct pci_dev *pdev = ioa_cfg->pdev;
6626
6627 ENTER;
6628 pci_block_user_cfg_access(pdev);
6629 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6630 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6631 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6632 LEAVE;
6633 return IPR_RC_JOB_RETURN;
6634}
6635
1da177e4
LT		 6636/**
6637 * ipr_reset_allowed - Query whether or not IOA can be reset
6638 * @ioa_cfg: ioa config struct
6639 *
6640 * Return value:
6641 * 0 if reset not allowed / non-zero if reset is allowed
6642 **/
6643static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6644{
6645 volatile u32 temp_reg;
6646
6647 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6648 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6649}
6650
6651/**
6652 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6653 * @ipr_cmd: ipr command struct
6654 *
6655 * Description: This function waits for adapter permission to run BIST,
6656 * then runs BIST. If the adapter does not give permission after a
6657 * reasonable time, we will reset the adapter anyway. The impact of
6658 * resetting the adapter without warning the adapter is the risk of
6659 * losing the persistent error log on the adapter. If the adapter is
6660 * reset while it is writing to the flash on the adapter, the flash
6661 * segment will have bad ECC and be zeroed.
6662 *
6663 * Return value:
6664 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6665 **/
6666static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6667{
6668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6669 int rc = IPR_RC_JOB_RETURN;
6670
6671 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6672 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6673 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6674 } else {
463fc696 6675 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6676 rc = IPR_RC_JOB_CONTINUE;
6677 }
6678
6679 return rc;
6680}
6681
6682/**
6683 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6684 * @ipr_cmd: ipr command struct
6685 *
6686 * Description: This function alerts the adapter that it will be reset.
6687 * If memory space is not currently enabled, proceed directly
6688 * to running BIST on the adapter. The timer must always be started
6689 * so we guarantee we do not run BIST from ipr_isr.
6690 *
6691 * Return value:
6692 * IPR_RC_JOB_RETURN
6693 **/
6694static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6695{
6696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6697 u16 cmd_reg;
6698 int rc;
6699
6700 ENTER;
6701 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6702
6703 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6704 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6705 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6706 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6707 } else {
463fc696 6708 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6709 }
6710
6711 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6712 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6713
6714 LEAVE;
6715 return IPR_RC_JOB_RETURN;
6716}
6717
6718/**
6719 * ipr_reset_ucode_download_done - Microcode download completion
6720 * @ipr_cmd: ipr command struct
6721 *
6722 * Description: This function unmaps the microcode download buffer.
6723 *
6724 * Return value:
6725 * IPR_RC_JOB_CONTINUE
6726 **/
6727static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6728{
6729 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6730 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6731
6732 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6733 sglist->num_sg, DMA_TO_DEVICE);
6734
6735 ipr_cmd->job_step = ipr_reset_alert;
6736 return IPR_RC_JOB_CONTINUE;
6737}
6738
6739/**
6740 * ipr_reset_ucode_download - Download microcode to the adapter
6741 * @ipr_cmd: ipr command struct
6742 *
6743 * Description: This function checks to see if it there is microcode
6744 * to download to the adapter. If there is, a download is performed.
6745 *
6746 * Return value:
6747 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6748 **/
6749static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6750{
6751 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6752 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6753
6754 ENTER;
6755 ipr_cmd->job_step = ipr_reset_alert;
6756
6757 if (!sglist)
6758 return IPR_RC_JOB_CONTINUE;
6759
6760 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6761 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6762 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6763 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6764 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6765 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6766 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6767
12baa420 6768 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6769 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6770
6771 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6772 IPR_WRITE_BUFFER_TIMEOUT);
6773
6774 LEAVE;
6775 return IPR_RC_JOB_RETURN;
6776}
6777
6778/**
6779 * ipr_reset_shutdown_ioa - Shutdown the adapter
6780 * @ipr_cmd: ipr command struct
6781 *
6782 * Description: This function issues an adapter shutdown of the
6783 * specified type to the specified adapter as part of the
6784 * adapter reset job.
6785 *
6786 * Return value:
6787 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6788 **/
6789static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6790{
6791 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6792 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6793 unsigned long timeout;
6794 int rc = IPR_RC_JOB_CONTINUE;
6795
6796 ENTER;
6797 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6798 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6799 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6800 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6801 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6802
ac09c349
BK		 6803 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6804 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6805 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6806 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6807 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6808 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6809 else
ac09c349 6810 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6811
6812 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6813
6814 rc = IPR_RC_JOB_RETURN;
6815 ipr_cmd->job_step = ipr_reset_ucode_download;
6816 } else
6817 ipr_cmd->job_step = ipr_reset_alert;
6818
6819 LEAVE;
6820 return rc;
6821}
6822
6823/**
6824 * ipr_reset_ioa_job - Adapter reset job
6825 * @ipr_cmd: ipr command struct
6826 *
6827 * Description: This function is the job router for the adapter reset job.
6828 *
6829 * Return value:
6830 * none
6831 **/
6832static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6833{
6834 u32 rc, ioasc;
1da177e4
LT		 6835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6836
6837 do {
6838 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6839
6840 if (ioa_cfg->reset_cmd != ipr_cmd) {
6841 /*
6842 * We are doing nested adapter resets and this is
6843 * not the current reset job.
6844 */
6845 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6846 return;
6847 }
6848
6849 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6850 rc = ipr_cmd->job_step_failed(ipr_cmd);
6851 if (rc == IPR_RC_JOB_RETURN)
6852 return;
1da177e4
LT		 6853 }
6854
6855 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6856 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6857 rc = ipr_cmd->job_step(ipr_cmd);
6858 } while(rc == IPR_RC_JOB_CONTINUE);
6859}
6860
6861/**
6862 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6863 * @ioa_cfg: ioa config struct
6864 * @job_step: first job step of reset job
6865 * @shutdown_type: shutdown type
6866 *
6867 * Description: This function will initiate the reset of the given adapter
6868 * starting at the selected job step.
6869 * If the caller needs to wait on the completion of the reset,
6870 * the caller must sleep on the reset_wait_q.
6871 *
6872 * Return value:
6873 * none
6874 **/
6875static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6876 int (*job_step) (struct ipr_cmnd *),
6877 enum ipr_shutdown_type shutdown_type)
6878{
6879 struct ipr_cmnd *ipr_cmd;
6880
6881 ioa_cfg->in_reset_reload = 1;
6882 ioa_cfg->allow_cmds = 0;
6883 scsi_block_requests(ioa_cfg->host);
6884
6885 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6886 ioa_cfg->reset_cmd = ipr_cmd;
6887 ipr_cmd->job_step = job_step;
6888 ipr_cmd->u.shutdown_type = shutdown_type;
6889
6890 ipr_reset_ioa_job(ipr_cmd);
6891}
6892
6893/**
6894 * ipr_initiate_ioa_reset - Initiate an adapter reset
6895 * @ioa_cfg: ioa config struct
6896 * @shutdown_type: shutdown type
6897 *
6898 * Description: This function will initiate the reset of the given adapter.
6899 * If the caller needs to wait on the completion of the reset,
6900 * the caller must sleep on the reset_wait_q.
6901 *
6902 * Return value:
6903 * none
6904 **/
6905static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6906 enum ipr_shutdown_type shutdown_type)
6907{
6908 if (ioa_cfg->ioa_is_dead)
6909 return;
6910
6911 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6912 ioa_cfg->sdt_state = ABORT_DUMP;
6913
6914 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6915 dev_err(&ioa_cfg->pdev->dev,
6916 "IOA taken offline - error recovery failed\n");
6917
6918 ioa_cfg->reset_retries = 0;
6919 ioa_cfg->ioa_is_dead = 1;
6920
6921 if (ioa_cfg->in_ioa_bringdown) {
6922 ioa_cfg->reset_cmd = NULL;
6923 ioa_cfg->in_reset_reload = 0;
6924 ipr_fail_all_ops(ioa_cfg);
6925 wake_up_all(&ioa_cfg->reset_wait_q);
6926
6927 spin_unlock_irq(ioa_cfg->host->host_lock);
6928 scsi_unblock_requests(ioa_cfg->host);
6929 spin_lock_irq(ioa_cfg->host->host_lock);
6930 return;
6931 } else {
6932 ioa_cfg->in_ioa_bringdown = 1;
6933 shutdown_type = IPR_SHUTDOWN_NONE;
6934 }
6935 }
6936
6937 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6938 shutdown_type);
6939}
6940
f8a88b19
LV		 6941/**
6942 * ipr_reset_freeze - Hold off all I/O activity
6943 * @ipr_cmd: ipr command struct
6944 *
6945 * Description: If the PCI slot is frozen, hold off all I/O
6946 * activity; then, as soon as the slot is available again,
6947 * initiate an adapter reset.
6948 */
6949static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6950{
6951 /* Disallow new interrupts, avoid loop */
6952 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6953 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6954 ipr_cmd->done = ipr_reset_ioa_job;
6955 return IPR_RC_JOB_RETURN;
6956}
6957
6958/**
6959 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6960 * @pdev: PCI device struct
6961 *
6962 * Description: This routine is called to tell us that the PCI bus
6963 * is down. Can't do anything here, except put the device driver
6964 * into a holding pattern, waiting for the PCI bus to come back.
6965 */
6966static void ipr_pci_frozen(struct pci_dev *pdev)
6967{
6968 unsigned long flags = 0;
6969 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6970
6971 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6972 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6974}
6975
6976/**
6977 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6978 * @pdev: PCI device struct
6979 *
6980 * Description: This routine is called by the pci error recovery
6981 * code after the PCI slot has been reset, just before we
6982 * should resume normal operations.
6983 */
6984static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6985{
6986 unsigned long flags = 0;
6987 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6988
6989 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6990 if (ioa_cfg->needs_warm_reset)
6991 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6992 else
6993 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6994 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6995 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6996 return PCI_ERS_RESULT_RECOVERED;
6997}
6998
6999/**
7000 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7001 * @pdev: PCI device struct
7002 *
7003 * Description: This routine is called when the PCI bus has
7004 * permanently failed.
7005 */
7006static void ipr_pci_perm_failure(struct pci_dev *pdev)
7007{
7008 unsigned long flags = 0;
7009 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7010
7011 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7012 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7013 ioa_cfg->sdt_state = ABORT_DUMP;
7014 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7015 ioa_cfg->in_ioa_bringdown = 1;
7016 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7018}
7019
7020/**
7021 * ipr_pci_error_detected - Called when a PCI error is detected.
7022 * @pdev: PCI device struct
7023 * @state: PCI channel state
7024 *
7025 * Description: Called when a PCI error is detected.
7026 *
7027 * Return value:
7028 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7029 */
7030static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7031 pci_channel_state_t state)
7032{
7033 switch (state) {
7034 case pci_channel_io_frozen:
7035 ipr_pci_frozen(pdev);
7036 return PCI_ERS_RESULT_NEED_RESET;
7037 case pci_channel_io_perm_failure:
7038 ipr_pci_perm_failure(pdev);
7039 return PCI_ERS_RESULT_DISCONNECT;
7040 break;
7041 default:
7042 break;
7043 }
7044 return PCI_ERS_RESULT_NEED_RESET;
7045}
7046
1da177e4
LT		 7047/**
7048 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7049 * @ioa_cfg: ioa cfg struct
7050 *
7051 * Description: This is the second phase of adapter intialization
7052 * This function takes care of initilizing the adapter to the point
7053 * where it can accept new commands.
7054
7055 * Return value:
b1c11812 7056 * 0 on success / -EIO on failure
1da177e4
LT		 7057 **/
7058static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7059{
7060 int rc = 0;
7061 unsigned long host_lock_flags = 0;
7062
7063 ENTER;
7064 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7065 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7066 if (ioa_cfg->needs_hard_reset) {
7067 ioa_cfg->needs_hard_reset = 0;
7068 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7069 } else
7070 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7071 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7072
7073 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7074 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7075 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7076
7077 if (ioa_cfg->ioa_is_dead) {
7078 rc = -EIO;
7079 } else if (ipr_invalid_adapter(ioa_cfg)) {
7080 if (!ipr_testmode)
7081 rc = -EIO;
7082
7083 dev_err(&ioa_cfg->pdev->dev,
7084 "Adapter not supported in this hardware configuration.\n");
7085 }
7086
7087 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7088
7089 LEAVE;
7090 return rc;
7091}
7092
7093/**
7094 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7095 * @ioa_cfg: ioa config struct
7096 *
7097 * Return value:
7098 * none
7099 **/
7100static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7101{
7102 int i;
7103
7104 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7105 if (ioa_cfg->ipr_cmnd_list[i])
7106 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7107 ioa_cfg->ipr_cmnd_list[i],
7108 ioa_cfg->ipr_cmnd_list_dma[i]);
7109
7110 ioa_cfg->ipr_cmnd_list[i] = NULL;
7111 }
7112
7113 if (ioa_cfg->ipr_cmd_pool)
7114 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7115
7116 ioa_cfg->ipr_cmd_pool = NULL;
7117}
7118
7119/**
7120 * ipr_free_mem - Frees memory allocated for an adapter
7121 * @ioa_cfg: ioa cfg struct
7122 *
7123 * Return value:
7124 * nothing
7125 **/
7126static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7127{
7128 int i;
7129
7130 kfree(ioa_cfg->res_entries);
7131 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7132 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7133 ipr_free_cmd_blks(ioa_cfg);
7134 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7135 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7136 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7137 ioa_cfg->cfg_table,
7138 ioa_cfg->cfg_table_dma);
7139
7140 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7141 pci_free_consistent(ioa_cfg->pdev,
7142 sizeof(struct ipr_hostrcb),
7143 ioa_cfg->hostrcb[i],
7144 ioa_cfg->hostrcb_dma[i]);
7145 }
7146
7147 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7148 kfree(ioa_cfg->trace);
7149}
7150
7151/**
7152 * ipr_free_all_resources - Free all allocated resources for an adapter.
7153 * @ipr_cmd: ipr command struct
7154 *
7155 * This function frees all allocated resources for the
7156 * specified adapter.
7157 *
7158 * Return value:
7159 * none
7160 **/
7161static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7162{
7163 struct pci_dev *pdev = ioa_cfg->pdev;
7164
7165 ENTER;
7166 free_irq(pdev->irq, ioa_cfg);
7167 iounmap(ioa_cfg->hdw_dma_regs);
7168 pci_release_regions(pdev);
7169 ipr_free_mem(ioa_cfg);
7170 scsi_host_put(ioa_cfg->host);
7171 pci_disable_device(pdev);
7172 LEAVE;
7173}
7174
7175/**
7176 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7177 * @ioa_cfg: ioa config struct
7178 *
7179 * Return value:
7180 * 0 on success / -ENOMEM on allocation failure
7181 **/
7182static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7183{
7184 struct ipr_cmnd *ipr_cmd;
7185 struct ipr_ioarcb *ioarcb;
7186 dma_addr_t dma_addr;
7187 int i;
7188
7189 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7190 sizeof(struct ipr_cmnd), 8, 0);
7191
7192 if (!ioa_cfg->ipr_cmd_pool)
7193 return -ENOMEM;
7194
7195 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7196 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7197
7198 if (!ipr_cmd) {
7199 ipr_free_cmd_blks(ioa_cfg);
7200 return -ENOMEM;
7201 }
7202
7203 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7204 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7205 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7206
7207 ioarcb = &ipr_cmd->ioarcb;
7208 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7209 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7210 ioarcb->write_ioadl_addr =
7211 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7212 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7213 ioarcb->ioasa_host_pci_addr =
7214 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7215 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7216 ipr_cmd->cmd_index = i;
7217 ipr_cmd->ioa_cfg = ioa_cfg;
7218 ipr_cmd->sense_buffer_dma = dma_addr +
7219 offsetof(struct ipr_cmnd, sense_buffer);
7220
7221 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7222 }
7223
7224 return 0;
7225}
7226
7227/**
7228 * ipr_alloc_mem - Allocate memory for an adapter
7229 * @ioa_cfg: ioa config struct
7230 *
7231 * Return value:
7232 * 0 on success / non-zero for error
7233 **/
7234static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7235{
7236 struct pci_dev *pdev = ioa_cfg->pdev;
7237 int i, rc = -ENOMEM;
7238
7239 ENTER;
0bc42e35 7240 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7241 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7242
7243 if (!ioa_cfg->res_entries)
7244 goto out;
7245
1da177e4
LT		 7246 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7247 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7248
7249 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7250 sizeof(struct ipr_misc_cbs),
7251 &ioa_cfg->vpd_cbs_dma);
7252
7253 if (!ioa_cfg->vpd_cbs)
7254 goto out_free_res_entries;
7255
7256 if (ipr_alloc_cmd_blks(ioa_cfg))
7257 goto out_free_vpd_cbs;
7258
7259 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7260 sizeof(u32) * IPR_NUM_CMD_BLKS,
7261 &ioa_cfg->host_rrq_dma);
7262
7263 if (!ioa_cfg->host_rrq)
7264 goto out_ipr_free_cmd_blocks;
7265
7266 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7267 sizeof(struct ipr_config_table),
7268 &ioa_cfg->cfg_table_dma);
7269
7270 if (!ioa_cfg->cfg_table)
7271 goto out_free_host_rrq;
7272
7273 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7274 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7275 sizeof(struct ipr_hostrcb),
7276 &ioa_cfg->hostrcb_dma[i]);
7277
7278 if (!ioa_cfg->hostrcb[i])
7279 goto out_free_hostrcb_dma;
7280
7281 ioa_cfg->hostrcb[i]->hostrcb_dma =
7282 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7283 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7284 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7285 }
7286
0bc42e35 7287 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7288 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7289
7290 if (!ioa_cfg->trace)
7291 goto out_free_hostrcb_dma;
7292
1da177e4
LT		 7293 rc = 0;
7294out:
7295 LEAVE;
7296 return rc;
7297
7298out_free_hostrcb_dma:
7299 while (i-- > 0) {
7300 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7301 ioa_cfg->hostrcb[i],
7302 ioa_cfg->hostrcb_dma[i]);
7303 }
7304 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7305 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7306out_free_host_rrq:
7307 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7308 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7309out_ipr_free_cmd_blocks:
7310 ipr_free_cmd_blks(ioa_cfg);
7311out_free_vpd_cbs:
7312 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7313 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7314out_free_res_entries:
7315 kfree(ioa_cfg->res_entries);
7316 goto out;
7317}
7318
7319/**
7320 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7321 * @ioa_cfg: ioa config struct
7322 *
7323 * Return value:
7324 * none
7325 **/
7326static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7327{
7328 int i;
7329
7330 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7331 ioa_cfg->bus_attr[i].bus = i;
7332 ioa_cfg->bus_attr[i].qas_enabled = 0;
7333 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7334 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7335 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7336 else
7337 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7338 }
7339}
7340
7341/**
7342 * ipr_init_ioa_cfg - Initialize IOA config struct
7343 * @ioa_cfg: ioa config struct
7344 * @host: scsi host struct
7345 * @pdev: PCI dev struct
7346 *
7347 * Return value:
7348 * none
7349 **/
7350static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7351 struct Scsi_Host *host, struct pci_dev *pdev)
7352{
7353 const struct ipr_interrupt_offsets *p;
7354 struct ipr_interrupts *t;
7355 void __iomem *base;
7356
7357 ioa_cfg->host = host;
7358 ioa_cfg->pdev = pdev;
7359 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7360 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7361 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7362 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7363 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7364 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7365 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7366 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7367 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7368 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7369
7370 INIT_LIST_HEAD(&ioa_cfg->free_q);
7371 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7372 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7373 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7374 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7375 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7376 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7377 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7378 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7379 if (ipr_enable_cache)
7380 ioa_cfg->cache_state = CACHE_ENABLED;
7381 else
7382 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7383
7384 ipr_initialize_bus_attr(ioa_cfg);
7385
7386 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7387 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7388 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7389 host->unique_id = host->host_no;
7390 host->max_cmd_len = IPR_MAX_CDB_LEN;
7391 pci_set_drvdata(pdev, ioa_cfg);
7392
7393 p = &ioa_cfg->chip_cfg->regs;
7394 t = &ioa_cfg->regs;
7395 base = ioa_cfg->hdw_dma_regs;
7396
7397 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7398 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7399 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7400 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7401 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7402 t->ioarrin_reg = base + p->ioarrin_reg;
7403 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7404 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7405 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7406}
7407
7408/**
7409 * ipr_get_chip_cfg - Find adapter chip configuration
7410 * @dev_id: PCI device id struct
7411 *
7412 * Return value:
7413 * ptr to chip config on success / NULL on failure
7414 **/
7415static const struct ipr_chip_cfg_t * __devinit
7416ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7417{
7418 int i;
7419
1da177e4
LT		 7420 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7421 if (ipr_chip[i].vendor == dev_id->vendor &&
7422 ipr_chip[i].device == dev_id->device)
7423 return ipr_chip[i].cfg;
7424 return NULL;
7425}
7426
7427/**
7428 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7429 * @pdev: PCI device struct
7430 * @dev_id: PCI device id struct
7431 *
7432 * Return value:
7433 * 0 on success / non-zero on failure
7434 **/
7435static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7436 const struct pci_device_id *dev_id)
7437{
7438 struct ipr_ioa_cfg *ioa_cfg;
7439 struct Scsi_Host *host;
7440 unsigned long ipr_regs_pci;
7441 void __iomem *ipr_regs;
a2a65a3e 7442 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7443 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7444
7445 ENTER;
7446
7447 if ((rc = pci_enable_device(pdev))) {
7448 dev_err(&pdev->dev, "Cannot enable adapter\n");
7449 goto out;
7450 }
7451
7452 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7453
7454 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7455
7456 if (!host) {
7457 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7458 rc = -ENOMEM;
7459 goto out_disable;
7460 }
7461
7462 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7463 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7464 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7465 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7466
7467 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7468
7469 if (!ioa_cfg->chip_cfg) {
7470 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7471 dev_id->vendor, dev_id->device);
7472 goto out_scsi_host_put;
7473 }
7474
5469cb5b
BK		 7475 if (ipr_transop_timeout)
7476 ioa_cfg->transop_timeout = ipr_transop_timeout;
7477 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7478 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7479 else
7480 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7481
44c10138 7482 ioa_cfg->revid = pdev->revision;
463fc696 7483
1da177e4
LT		 7484 ipr_regs_pci = pci_resource_start(pdev, 0);
7485
7486 rc = pci_request_regions(pdev, IPR_NAME);
7487 if (rc < 0) {
7488 dev_err(&pdev->dev,
7489 "Couldn't register memory range of registers\n");
7490 goto out_scsi_host_put;
7491 }
7492
7493 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7494
7495 if (!ipr_regs) {
7496 dev_err(&pdev->dev,
7497 "Couldn't map memory range of registers\n");
7498 rc = -ENOMEM;
7499 goto out_release_regions;
7500 }
7501
7502 ioa_cfg->hdw_dma_regs = ipr_regs;
7503 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7504 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7505
7506 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7507
7508 pci_set_master(pdev);
7509
7510 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7511 if (rc < 0) {
7512 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7513 goto cleanup_nomem;
7514 }
7515
7516 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7517 ioa_cfg->chip_cfg->cache_line_size);
7518
7519 if (rc != PCIBIOS_SUCCESSFUL) {
7520 dev_err(&pdev->dev, "Write of cache line size failed\n");
7521 rc = -EIO;
7522 goto cleanup_nomem;
7523 }
7524
7525 /* Save away PCI config space for use following IOA reset */
7526 rc = pci_save_state(pdev);
7527
7528 if (rc != PCIBIOS_SUCCESSFUL) {
7529 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7530 rc = -EIO;
7531 goto cleanup_nomem;
7532 }
7533
7534 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7535 goto cleanup_nomem;
7536
7537 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7538 goto cleanup_nomem;
7539
7540 rc = ipr_alloc_mem(ioa_cfg);
7541 if (rc < 0) {
7542 dev_err(&pdev->dev,
7543 "Couldn't allocate enough memory for device driver!\n");
7544 goto cleanup_nomem;
7545 }
7546
ce155cce
BK		 7547 /*
7548 * If HRRQ updated interrupt is not masked, or reset alert is set,
7549 * the card is in an unknown state and needs a hard reset
7550 */
7551 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7552 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7553 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7554 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7555 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7556 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7557 ioa_cfg->needs_hard_reset = 1;
7558 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7559 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7560
1da177e4 7561 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7562 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7563
7564 if (rc) {
7565 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7566 pdev->irq, rc);
7567 goto cleanup_nolog;
7568 }
7569
463fc696
BK		 7570 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7571 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7572 ioa_cfg->needs_warm_reset = 1;
7573 ioa_cfg->reset = ipr_reset_slot_reset;
7574 } else
7575 ioa_cfg->reset = ipr_reset_start_bist;
7576
1da177e4
LT		 7577 spin_lock(&ipr_driver_lock);
7578 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7579 spin_unlock(&ipr_driver_lock);
7580
7581 LEAVE;
7582out:
7583 return rc;
7584
7585cleanup_nolog:
7586 ipr_free_mem(ioa_cfg);
7587cleanup_nomem:
7588 iounmap(ipr_regs);
7589out_release_regions:
7590 pci_release_regions(pdev);
7591out_scsi_host_put:
7592 scsi_host_put(host);
7593out_disable:
7594 pci_disable_device(pdev);
7595 goto out;
7596}
7597
7598/**
7599 * ipr_scan_vsets - Scans for VSET devices
7600 * @ioa_cfg: ioa config struct
7601 *
7602 * Description: Since the VSET resources do not follow SAM in that we can have
7603 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7604 *
7605 * Return value:
7606 * none
7607 **/
7608static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7609{
7610 int target, lun;
7611
7612 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7613 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7614 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7615}
7616
7617/**
7618 * ipr_initiate_ioa_bringdown - Bring down an adapter
7619 * @ioa_cfg: ioa config struct
7620 * @shutdown_type: shutdown type
7621 *
7622 * Description: This function will initiate bringing down the adapter.
7623 * This consists of issuing an IOA shutdown to the adapter
7624 * to flush the cache, and running BIST.
7625 * If the caller needs to wait on the completion of the reset,
7626 * the caller must sleep on the reset_wait_q.
7627 *
7628 * Return value:
7629 * none
7630 **/
7631static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7632 enum ipr_shutdown_type shutdown_type)
7633{
7634 ENTER;
7635 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7636 ioa_cfg->sdt_state = ABORT_DUMP;
7637 ioa_cfg->reset_retries = 0;
7638 ioa_cfg->in_ioa_bringdown = 1;
7639 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7640 LEAVE;
7641}
7642
7643/**
7644 * __ipr_remove - Remove a single adapter
7645 * @pdev: pci device struct
7646 *
7647 * Adapter hot plug remove entry point.
7648 *
7649 * Return value:
7650 * none
7651 **/
7652static void __ipr_remove(struct pci_dev *pdev)
7653{
7654 unsigned long host_lock_flags = 0;
7655 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7656 ENTER;
7657
7658 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7659 while(ioa_cfg->in_reset_reload) {
7660 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7661 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7662 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7663 }
7664
1da177e4
LT		 7665 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7666
7667 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7668 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7669 flush_scheduled_work();
1da177e4
LT		 7670 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7671
7672 spin_lock(&ipr_driver_lock);
7673 list_del(&ioa_cfg->queue);
7674 spin_unlock(&ipr_driver_lock);
7675
7676 if (ioa_cfg->sdt_state == ABORT_DUMP)
7677 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7678 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7679
7680 ipr_free_all_resources(ioa_cfg);
7681
7682 LEAVE;
7683}
7684
7685/**
7686 * ipr_remove - IOA hot plug remove entry point
7687 * @pdev: pci device struct
7688 *
7689 * Adapter hot plug remove entry point.
7690 *
7691 * Return value:
7692 * none
7693 **/
7694static void ipr_remove(struct pci_dev *pdev)
7695{
7696 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7697
7698 ENTER;
7699
1da177e4
LT		 7700 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7701 &ipr_trace_attr);
7702 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7703 &ipr_dump_attr);
7704 scsi_remove_host(ioa_cfg->host);
7705
7706 __ipr_remove(pdev);
7707
7708 LEAVE;
7709}
7710
7711/**
7712 * ipr_probe - Adapter hot plug add entry point
7713 *
7714 * Return value:
7715 * 0 on success / non-zero on failure
7716 **/
7717static int __devinit ipr_probe(struct pci_dev *pdev,
7718 const struct pci_device_id *dev_id)
7719{
7720 struct ipr_ioa_cfg *ioa_cfg;
7721 int rc;
7722
7723 rc = ipr_probe_ioa(pdev, dev_id);
7724
7725 if (rc)
7726 return rc;
7727
7728 ioa_cfg = pci_get_drvdata(pdev);
7729 rc = ipr_probe_ioa_part2(ioa_cfg);
7730
7731 if (rc) {
7732 __ipr_remove(pdev);
7733 return rc;
7734 }
7735
7736 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7737
7738 if (rc) {
7739 __ipr_remove(pdev);
7740 return rc;
7741 }
7742
7743 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7744 &ipr_trace_attr);
7745
7746 if (rc) {
7747 scsi_remove_host(ioa_cfg->host);
7748 __ipr_remove(pdev);
7749 return rc;
7750 }
7751
7752 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7753 &ipr_dump_attr);
7754
7755 if (rc) {
7756 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7757 &ipr_trace_attr);
7758 scsi_remove_host(ioa_cfg->host);
7759 __ipr_remove(pdev);
7760 return rc;
7761 }
7762
7763 scsi_scan_host(ioa_cfg->host);
7764 ipr_scan_vsets(ioa_cfg);
7765 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7766 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7767 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7768 schedule_work(&ioa_cfg->work_q);
7769 return 0;
7770}
7771
7772/**
7773 * ipr_shutdown - Shutdown handler.
d18c3db5 7774 * @pdev: pci device struct
1da177e4
LT		 7775 *
7776 * This function is invoked upon system shutdown/reboot. It will issue
7777 * an adapter shutdown to the adapter to flush the write cache.
7778 *
7779 * Return value:
7780 * none
7781 **/
d18c3db5 7782static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7783{
d18c3db5 7784 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7785 unsigned long lock_flags = 0;
7786
7787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7788 while(ioa_cfg->in_reset_reload) {
7789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7790 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7791 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7792 }
7793
1da177e4
LT		 7794 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7795 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7796 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7797}
7798
7799static struct pci_device_id ipr_pci_table[] __devinitdata = {
7800 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7802 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7804 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7805 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7806 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7808 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7810 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7811 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7812 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7813 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7814 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7816 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7817 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7819 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_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_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7824 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7827 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7829 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7830 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7832 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7835 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7836 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7837 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7838 IPR_USE_LONG_TRANSOP_TIMEOUT },
7839 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7840 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7841 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7842 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7843 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7844 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7845 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7846 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7847 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7848 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7849 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7850 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7851 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7852 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7853 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7854 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7855 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7856 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7857 { }
7858};
7859MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7860
f8a88b19
LV		 7861static struct pci_error_handlers ipr_err_handler = {
7862 .error_detected = ipr_pci_error_detected,
7863 .slot_reset = ipr_pci_slot_reset,
7864};
7865
1da177e4
LT		 7866static struct pci_driver ipr_driver = {
7867 .name = IPR_NAME,
7868 .id_table = ipr_pci_table,
7869 .probe = ipr_probe,
7870 .remove = ipr_remove,
d18c3db5 7871 .shutdown = ipr_shutdown,
f8a88b19 7872 .err_handler = &ipr_err_handler,
68c96e59 7873 .dynids.use_driver_data = 1
1da177e4
LT		 7874};
7875
7876/**
7877 * ipr_init - Module entry point
7878 *
7879 * Return value:
7880 * 0 on success / negative value on failure
7881 **/
7882static int __init ipr_init(void)
7883{
7884 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7885 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7886
dcbccbde 7887 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7888}
7889
7890/**
7891 * ipr_exit - Module unload
7892 *
7893 * Module unload entry point.
7894 *
7895 * Return value:
7896 * none
7897 **/
7898static void __exit ipr_exit(void)
7899{
7900 pci_unregister_driver(&ipr_driver);
7901}
7902
7903module_init(ipr_init);
7904module_exit(ipr_exit);
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