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[SCSI] sd: tell the user when a disk's capacity is adjusted
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
CommitLineData
1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
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>
0ce3a7e5 74#include <linux/hdreg.h>
1da177e4
LT		 75#include <asm/io.h>
76#include <asm/irq.h>
77#include <asm/processor.h>
78#include <scsi/scsi.h>
79#include <scsi/scsi_host.h>
80#include <scsi/scsi_tcq.h>
81#include <scsi/scsi_eh.h>
82#include <scsi/scsi_cmnd.h>
1da177e4
LT		 83#include "ipr.h"
84
85/*
86 * Global Data
87 */
b7d68ca3 88static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
5469cb5b 93static unsigned int ipr_transop_timeout = 0;
62275040 94static unsigned int ipr_enable_cache = 1;
d3c74871 95static unsigned int ipr_debug = 0;
ac09c349 96static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 97static DEFINE_SPINLOCK(ipr_driver_lock);
98
99/* This table describes the differences between DMA controller chips */
100static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 101 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131};
132
133static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436
BK		 136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
60e7486b 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
1da177e4
LT		 139 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
140 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
141};
142
143static int ipr_max_bus_speeds [] = {
144 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145};
146
147MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
148MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
149module_param_named(max_speed, ipr_max_speed, uint, 0);
150MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
151module_param_named(log_level, ipr_log_level, uint, 0);
152MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
153module_param_named(testmode, ipr_testmode, int, 0);
154MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
155module_param_named(fastfail, ipr_fastfail, int, 0);
156MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
157module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
158MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
62275040
BK		 159module_param_named(enable_cache, ipr_enable_cache, int, 0);
160MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 161module_param_named(debug, ipr_debug, int, 0);
162MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 163module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
164MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
1da177e4
LT		 165MODULE_LICENSE("GPL");
166MODULE_VERSION(IPR_DRIVER_VERSION);
167
1da177e4
LT		 168/* A constant array of IOASCs/URCs/Error Messages */
169static const
170struct ipr_error_table_t ipr_error_table[] = {
933916f3 171 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 172 "8155: An unknown error was received"},
173 {0x00330000, 0, 0,
174 "Soft underlength error"},
175 {0x005A0000, 0, 0,
176 "Command to be cancelled not found"},
177 {0x00808000, 0, 0,
178 "Qualified success"},
933916f3 179 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 180 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 181 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 182 "4101: Soft device bus fabric error"},
933916f3 183 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 184 "FFF9: Device sector reassign successful"},
933916f3 185 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 186 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 187 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 188 "7001: IOA sector reassignment successful"},
933916f3 189 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 190 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 191 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 192 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 193 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 194 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 195 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 196 "FFF6: Device hardware error recovered by the IOA"},
933916f3 197 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 198 "FFF6: Device hardware error recovered by the device"},
933916f3 199 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 200 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 201 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 202 "FFFA: Undefined device response recovered by the IOA"},
933916f3 203 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 204 "FFF6: Device bus error, message or command phase"},
933916f3 205 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 206 "FFFE: Task Management Function failed"},
933916f3 207 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 208 "FFF6: Failure prediction threshold exceeded"},
933916f3 209 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 210 "8009: Impending cache battery pack failure"},
211 {0x02040400, 0, 0,
212 "34FF: Disk device format in progress"},
65f56475
BK		 213 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
214 "9070: IOA requested reset"},
1da177e4
LT		 215 {0x023F0000, 0, 0,
216 "Synchronization required"},
217 {0x024E0000, 0, 0,
218 "No ready, IOA shutdown"},
219 {0x025A0000, 0, 0,
220 "Not ready, IOA has been shutdown"},
933916f3 221 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 222 "3020: Storage subsystem configuration error"},
223 {0x03110B00, 0, 0,
224 "FFF5: Medium error, data unreadable, recommend reassign"},
225 {0x03110C00, 0, 0,
226 "7000: Medium error, data unreadable, do not reassign"},
933916f3 227 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 228 "FFF3: Disk media format bad"},
933916f3 229 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 230 "3002: Addressed device failed to respond to selection"},
933916f3 231 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 232 "3100: Device bus error"},
933916f3 233 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 234 "3109: IOA timed out a device command"},
235 {0x04088000, 0, 0,
236 "3120: SCSI bus is not operational"},
933916f3 237 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 238 "4100: Hard device bus fabric error"},
933916f3 239 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 240 "9000: IOA reserved area data check"},
933916f3 241 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 242 "9001: IOA reserved area invalid data pattern"},
933916f3 243 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 244 "9002: IOA reserved area LRC error"},
933916f3 245 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 246 "102E: Out of alternate sectors for disk storage"},
933916f3 247 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 248 "FFF4: Data transfer underlength error"},
933916f3 249 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 250 "FFF4: Data transfer overlength error"},
933916f3 251 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 252 "3400: Logical unit failure"},
933916f3 253 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 254 "FFF4: Device microcode is corrupt"},
933916f3 255 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 256 "8150: PCI bus error"},
257 {0x04430000, 1, 0,
258 "Unsupported device bus message received"},
933916f3 259 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 260 "FFF4: Disk device problem"},
933916f3 261 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 262 "8150: Permanent IOA failure"},
933916f3 263 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 264 "3010: Disk device returned wrong response to IOA"},
933916f3 265 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 266 "8151: IOA microcode error"},
267 {0x04448500, 0, 0,
268 "Device bus status error"},
933916f3 269 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 270 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 271 {0x04448700, 0, 0,
272 "ATA device status error"},
1da177e4
LT		 273 {0x04490000, 0, 0,
274 "Message reject received from the device"},
933916f3 275 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 276 "8008: A permanent cache battery pack failure occurred"},
933916f3 277 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 278 "9090: Disk unit has been modified after the last known status"},
933916f3 279 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 280 "9081: IOA detected device error"},
933916f3 281 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 282 "9082: IOA detected device error"},
933916f3 283 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 284 "3110: Device bus error, message or command phase"},
933916f3 285 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 286 "3110: SAS Command / Task Management Function failed"},
933916f3 287 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 288 "9091: Incorrect hardware configuration change has been detected"},
933916f3 289 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 290 "9073: Invalid multi-adapter configuration"},
933916f3 291 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 292 "4010: Incorrect connection between cascaded expanders"},
933916f3 293 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 294 "4020: Connections exceed IOA design limits"},
933916f3 295 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 296 "4030: Incorrect multipath connection"},
933916f3 297 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 298 "4110: Unsupported enclosure function"},
933916f3 299 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 300 "FFF4: Command to logical unit failed"},
301 {0x05240000, 1, 0,
302 "Illegal request, invalid request type or request packet"},
303 {0x05250000, 0, 0,
304 "Illegal request, invalid resource handle"},
b0df54bb
BK		 305 {0x05258000, 0, 0,
306 "Illegal request, commands not allowed to this device"},
307 {0x05258100, 0, 0,
308 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 309 {0x05260000, 0, 0,
310 "Illegal request, invalid field in parameter list"},
311 {0x05260100, 0, 0,
312 "Illegal request, parameter not supported"},
313 {0x05260200, 0, 0,
314 "Illegal request, parameter value invalid"},
315 {0x052C0000, 0, 0,
316 "Illegal request, command sequence error"},
b0df54bb
BK		 317 {0x052C8000, 1, 0,
318 "Illegal request, dual adapter support not enabled"},
933916f3 319 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 320 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 321 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 322 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 323 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 324 "3140: Device bus not ready to ready transition"},
933916f3 325 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 326 "FFFB: SCSI bus was reset"},
327 {0x06290500, 0, 0,
328 "FFFE: SCSI bus transition to single ended"},
329 {0x06290600, 0, 0,
330 "FFFE: SCSI bus transition to LVD"},
933916f3 331 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 332 "FFFB: SCSI bus was reset by another initiator"},
933916f3 333 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 334 "3029: A device replacement has occurred"},
933916f3 335 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 336 "9051: IOA cache data exists for a missing or failed device"},
933916f3 337 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 339 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 340 "9025: Disk unit is not supported at its physical location"},
933916f3 341 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 342 "3020: IOA detected a SCSI bus configuration error"},
933916f3 343 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 344 "3150: SCSI bus configuration error"},
933916f3 345 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 346 "9074: Asymmetric advanced function disk configuration"},
933916f3 347 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 348 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 349 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 350 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 351 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 352 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 353 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 354 "9076: Configuration error, missing remote IOA"},
933916f3 355 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 356 "4050: Enclosure does not support a required multipath function"},
b75424fc
WB		 357 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
358 "4070: Logically bad block written on device"},
933916f3 359 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 360 "9041: Array protection temporarily suspended"},
933916f3 361 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 362 "9042: Corrupt array parity detected on specified device"},
933916f3 363 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 364 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 365 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 366 "9071: Link operational transition"},
933916f3 367 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 368 "9072: Link not operational transition"},
933916f3 369 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 370 "9032: Array exposed but still protected"},
e435340c
BK		 371 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
372 "70DD: Device forced failed by disrupt device command"},
933916f3 373 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 374 "4061: Multipath redundancy level got better"},
933916f3 375 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 376 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 377 {0x07270000, 0, 0,
378 "Failure due to other device"},
933916f3 379 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 380 "9008: IOA does not support functions expected by devices"},
933916f3 381 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 382 "9010: Cache data associated with attached devices cannot be found"},
933916f3 383 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 384 "9011: Cache data belongs to devices other than those attached"},
933916f3 385 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 386 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 387 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 388 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 389 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 390 "9022: Exposed array is missing a required device"},
933916f3 391 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 392 "9023: Array member(s) not at required physical locations"},
933916f3 393 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 394 "9024: Array not functional due to present hardware configuration"},
933916f3 395 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 396 "9026: Array not functional due to present hardware configuration"},
933916f3 397 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 398 "9027: Array is missing a device and parity is out of sync"},
933916f3 399 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 400 "9028: Maximum number of arrays already exist"},
933916f3 401 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 402 "9050: Required cache data cannot be located for a disk unit"},
933916f3 403 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 404 "9052: Cache data exists for a device that has been modified"},
933916f3 405 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 406 "9054: IOA resources not available due to previous problems"},
933916f3 407 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 408 "9092: Disk unit requires initialization before use"},
933916f3 409 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 410 "9029: Incorrect hardware configuration change has been detected"},
933916f3 411 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 412 "9060: One or more disk pairs are missing from an array"},
933916f3 413 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 414 "9061: One or more disks are missing from an array"},
933916f3 415 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 416 "9062: One or more disks are missing from an array"},
933916f3 417 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 418 "9063: Maximum number of functional arrays has been exceeded"},
419 {0x0B260000, 0, 0,
420 "Aborted command, invalid descriptor"},
421 {0x0B5A0000, 0, 0,
422 "Command terminated by host"}
423};
424
425static const struct ipr_ses_table_entry ipr_ses_table[] = {
426 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
427 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
428 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
429 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
430 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
431 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
432 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
433 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
436 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
437 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
438 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
439};
440
441/*
442 * Function Prototypes
443 */
444static int ipr_reset_alert(struct ipr_cmnd *);
445static void ipr_process_ccn(struct ipr_cmnd *);
446static void ipr_process_error(struct ipr_cmnd *);
447static void ipr_reset_ioa_job(struct ipr_cmnd *);
448static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
449 enum ipr_shutdown_type);
450
451#ifdef CONFIG_SCSI_IPR_TRACE
452/**
453 * ipr_trc_hook - Add a trace entry to the driver trace
454 * @ipr_cmd: ipr command struct
455 * @type: trace type
456 * @add_data: additional data
457 *
458 * Return value:
459 * none
460 **/
461static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
462 u8 type, u32 add_data)
463{
464 struct ipr_trace_entry *trace_entry;
465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
466
467 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
468 trace_entry->time = jiffies;
469 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
470 trace_entry->type = type;
35a39691
BK		 471 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
472 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 473 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
474 trace_entry->u.add_data = add_data;
475}
476#else
477#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
478#endif
479
480/**
481 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
482 * @ipr_cmd: ipr command struct
483 *
484 * Return value:
485 * none
486 **/
487static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
488{
489 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
490 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
51b1c7e1 491 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 492
493 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
494 ioarcb->write_data_transfer_length = 0;
495 ioarcb->read_data_transfer_length = 0;
496 ioarcb->write_ioadl_len = 0;
497 ioarcb->read_ioadl_len = 0;
51b1c7e1
BK		 498 ioarcb->write_ioadl_addr =
499 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
500 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 501 ioasa->ioasc = 0;
502 ioasa->residual_data_len = 0;
35a39691 503 ioasa->u.gata.status = 0;
1da177e4
LT		 504
505 ipr_cmd->scsi_cmd = NULL;
35a39691 506 ipr_cmd->qc = NULL;
1da177e4
LT		 507 ipr_cmd->sense_buffer[0] = 0;
508 ipr_cmd->dma_use_sg = 0;
509}
510
511/**
512 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
513 * @ipr_cmd: ipr command struct
514 *
515 * Return value:
516 * none
517 **/
518static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
519{
520 ipr_reinit_ipr_cmnd(ipr_cmd);
521 ipr_cmd->u.scratch = 0;
522 ipr_cmd->sibling = NULL;
523 init_timer(&ipr_cmd->timer);
524}
525
526/**
527 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
528 * @ioa_cfg: ioa config struct
529 *
530 * Return value:
531 * pointer to ipr command struct
532 **/
533static
534struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
535{
536 struct ipr_cmnd *ipr_cmd;
537
538 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
539 list_del(&ipr_cmd->queue);
540 ipr_init_ipr_cmnd(ipr_cmd);
541
542 return ipr_cmd;
543}
544
1da177e4
LT		 545/**
546 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
547 * @ioa_cfg: ioa config struct
548 * @clr_ints: interrupts to clear
549 *
550 * This function masks all interrupts on the adapter, then clears the
551 * interrupts specified in the mask
552 *
553 * Return value:
554 * none
555 **/
556static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
557 u32 clr_ints)
558{
559 volatile u32 int_reg;
560
561 /* Stop new interrupts */
562 ioa_cfg->allow_interrupts = 0;
563
564 /* Set interrupt mask to stop all new interrupts */
565 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
566
567 /* Clear any pending interrupts */
568 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
570}
571
572/**
573 * ipr_save_pcix_cmd_reg - Save PCI-X command register
574 * @ioa_cfg: ioa config struct
575 *
576 * Return value:
577 * 0 on success / -EIO on failure
578 **/
579static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580{
581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582
7dce0e1c
BK		 583 if (pcix_cmd_reg == 0)
584 return 0;
1da177e4
LT		 585
586 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
587 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
588 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
589 return -EIO;
590 }
591
592 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
593 return 0;
594}
595
596/**
597 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
598 * @ioa_cfg: ioa config struct
599 *
600 * Return value:
601 * 0 on success / -EIO on failure
602 **/
603static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
604{
605 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
606
607 if (pcix_cmd_reg) {
608 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
609 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
610 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
611 return -EIO;
612 }
1da177e4
LT		 613 }
614
615 return 0;
616}
617
35a39691
BK		 618/**
619 * ipr_sata_eh_done - done function for aborted SATA commands
620 * @ipr_cmd: ipr command struct
621 *
622 * This function is invoked for ops generated to SATA
623 * devices which are being aborted.
624 *
625 * Return value:
626 * none
627 **/
628static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
629{
630 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
631 struct ata_queued_cmd *qc = ipr_cmd->qc;
632 struct ipr_sata_port *sata_port = qc->ap->private_data;
633
634 qc->err_mask |= AC_ERR_OTHER;
635 sata_port->ioasa.status |= ATA_BUSY;
636 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
637 ata_qc_complete(qc);
638}
639
1da177e4
LT		 640/**
641 * ipr_scsi_eh_done - mid-layer done function for aborted ops
642 * @ipr_cmd: ipr command struct
643 *
644 * This function is invoked by the interrupt handler for
645 * ops generated by the SCSI mid-layer which are being aborted.
646 *
647 * Return value:
648 * none
649 **/
650static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
651{
652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
653 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
654
655 scsi_cmd->result |= (DID_ERROR << 16);
656
63015bc9 657 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 658 scsi_cmd->scsi_done(scsi_cmd);
659 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
660}
661
662/**
663 * ipr_fail_all_ops - Fails all outstanding ops.
664 * @ioa_cfg: ioa config struct
665 *
666 * This function fails all outstanding ops.
667 *
668 * Return value:
669 * none
670 **/
671static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
672{
673 struct ipr_cmnd *ipr_cmd, *temp;
674
675 ENTER;
676 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
677 list_del(&ipr_cmd->queue);
678
679 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
680 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
681
682 if (ipr_cmd->scsi_cmd)
683 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 684 else if (ipr_cmd->qc)
685 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 686
687 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
688 del_timer(&ipr_cmd->timer);
689 ipr_cmd->done(ipr_cmd);
690 }
691
692 LEAVE;
693}
694
695/**
696 * ipr_do_req - Send driver initiated requests.
697 * @ipr_cmd: ipr command struct
698 * @done: done function
699 * @timeout_func: timeout function
700 * @timeout: timeout value
701 *
702 * This function sends the specified command to the adapter with the
703 * timeout given. The done function is invoked on command completion.
704 *
705 * Return value:
706 * none
707 **/
708static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
709 void (*done) (struct ipr_cmnd *),
710 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
711{
712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
713
714 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
715
716 ipr_cmd->done = done;
717
718 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
719 ipr_cmd->timer.expires = jiffies + timeout;
720 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
721
722 add_timer(&ipr_cmd->timer);
723
724 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
725
726 mb();
727 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
728 ioa_cfg->regs.ioarrin_reg);
729}
730
731/**
732 * ipr_internal_cmd_done - Op done function for an internally generated op.
733 * @ipr_cmd: ipr command struct
734 *
735 * This function is the op done function for an internally generated,
736 * blocking op. It simply wakes the sleeping thread.
737 *
738 * Return value:
739 * none
740 **/
741static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
742{
743 if (ipr_cmd->sibling)
744 ipr_cmd->sibling = NULL;
745 else
746 complete(&ipr_cmd->completion);
747}
748
749/**
750 * ipr_send_blocking_cmd - Send command and sleep on its completion.
751 * @ipr_cmd: ipr command struct
752 * @timeout_func: function to invoke if command times out
753 * @timeout: timeout
754 *
755 * Return value:
756 * none
757 **/
758static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
759 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
760 u32 timeout)
761{
762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
763
764 init_completion(&ipr_cmd->completion);
765 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
766
767 spin_unlock_irq(ioa_cfg->host->host_lock);
768 wait_for_completion(&ipr_cmd->completion);
769 spin_lock_irq(ioa_cfg->host->host_lock);
770}
771
772/**
773 * ipr_send_hcam - Send an HCAM to the adapter.
774 * @ioa_cfg: ioa config struct
775 * @type: HCAM type
776 * @hostrcb: hostrcb struct
777 *
778 * This function will send a Host Controlled Async command to the adapter.
779 * If HCAMs are currently not allowed to be issued to the adapter, it will
780 * place the hostrcb on the free queue.
781 *
782 * Return value:
783 * none
784 **/
785static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
786 struct ipr_hostrcb *hostrcb)
787{
788 struct ipr_cmnd *ipr_cmd;
789 struct ipr_ioarcb *ioarcb;
790
791 if (ioa_cfg->allow_cmds) {
792 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
793 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
794 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
795
796 ipr_cmd->u.hostrcb = hostrcb;
797 ioarcb = &ipr_cmd->ioarcb;
798
799 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
800 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
801 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
802 ioarcb->cmd_pkt.cdb[1] = type;
803 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
804 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
805
806 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
807 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
808 ipr_cmd->ioadl[0].flags_and_data_len =
809 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
810 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
811
812 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
813 ipr_cmd->done = ipr_process_ccn;
814 else
815 ipr_cmd->done = ipr_process_error;
816
817 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
818
819 mb();
820 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
821 ioa_cfg->regs.ioarrin_reg);
822 } else {
823 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
824 }
825}
826
827/**
828 * ipr_init_res_entry - Initialize a resource entry struct.
829 * @res: resource entry struct
830 *
831 * Return value:
832 * none
833 **/
834static void ipr_init_res_entry(struct ipr_resource_entry *res)
835{
ee0a90fa 836 res->needs_sync_complete = 0;
1da177e4
LT		 837 res->in_erp = 0;
838 res->add_to_ml = 0;
839 res->del_from_ml = 0;
840 res->resetting_device = 0;
841 res->sdev = NULL;
35a39691 842 res->sata_port = NULL;
1da177e4
LT		 843}
844
845/**
846 * ipr_handle_config_change - Handle a config change from the adapter
847 * @ioa_cfg: ioa config struct
848 * @hostrcb: hostrcb
849 *
850 * Return value:
851 * none
852 **/
853static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
854 struct ipr_hostrcb *hostrcb)
855{
856 struct ipr_resource_entry *res = NULL;
857 struct ipr_config_table_entry *cfgte;
858 u32 is_ndn = 1;
859
860 cfgte = &hostrcb->hcam.u.ccn.cfgte;
861
862 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
863 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
864 sizeof(cfgte->res_addr))) {
865 is_ndn = 0;
866 break;
867 }
868 }
869
870 if (is_ndn) {
871 if (list_empty(&ioa_cfg->free_res_q)) {
872 ipr_send_hcam(ioa_cfg,
873 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
874 hostrcb);
875 return;
876 }
877
878 res = list_entry(ioa_cfg->free_res_q.next,
879 struct ipr_resource_entry, queue);
880
881 list_del(&res->queue);
882 ipr_init_res_entry(res);
883 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
884 }
885
886 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
887
888 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
889 if (res->sdev) {
1da177e4 890 res->del_from_ml = 1;
1121b794 891 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 892 if (ioa_cfg->allow_ml_add_del)
893 schedule_work(&ioa_cfg->work_q);
894 } else
895 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
896 } else if (!res->sdev) {
897 res->add_to_ml = 1;
898 if (ioa_cfg->allow_ml_add_del)
899 schedule_work(&ioa_cfg->work_q);
900 }
901
902 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
903}
904
905/**
906 * ipr_process_ccn - Op done function for a CCN.
907 * @ipr_cmd: ipr command struct
908 *
909 * This function is the op done function for a configuration
910 * change notification host controlled async from the adapter.
911 *
912 * Return value:
913 * none
914 **/
915static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
916{
917 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
918 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
919 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
920
921 list_del(&hostrcb->queue);
922 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
923
924 if (ioasc) {
925 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
926 dev_err(&ioa_cfg->pdev->dev,
927 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
928
929 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
930 } else {
931 ipr_handle_config_change(ioa_cfg, hostrcb);
932 }
933}
934
8cf093e2
BK		 935/**
936 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
937 * @i: index into buffer
938 * @buf: string to modify
939 *
940 * This function will strip all trailing whitespace, pad the end
941 * of the string with a single space, and NULL terminate the string.
942 *
943 * Return value:
944 * new length of string
945 **/
946static int strip_and_pad_whitespace(int i, char *buf)
947{
948 while (i && buf[i] == ' ')
949 i--;
950 buf[i+1] = ' ';
951 buf[i+2] = '\0';
952 return i + 2;
953}
954
955/**
956 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
957 * @prefix: string to print at start of printk
958 * @hostrcb: hostrcb pointer
959 * @vpd: vendor/product id/sn struct
960 *
961 * Return value:
962 * none
963 **/
964static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
965 struct ipr_vpd *vpd)
966{
967 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
968 int i = 0;
969
970 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
971 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
974 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
975
976 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
977 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
978
979 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
980}
981
1da177e4
LT		 982/**
983 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 984 * @vpd: vendor/product id/sn struct
1da177e4
LT		 985 *
986 * Return value:
987 * none
988 **/
cfc32139 989static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 990{
991 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
992 + IPR_SERIAL_NUM_LEN];
993
cfc32139
BK		 994 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
995 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 996 IPR_PROD_ID_LEN);
997 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
998 ipr_err("Vendor/Product ID: %s\n", buffer);
999
cfc32139 1000 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 1001 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1002 ipr_err(" Serial Number: %s\n", buffer);
1003}
1004
8cf093e2
BK		 1005/**
1006 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1007 * @prefix: string to print at start of printk
1008 * @hostrcb: hostrcb pointer
1009 * @vpd: vendor/product id/sn/wwn struct
1010 *
1011 * Return value:
1012 * none
1013 **/
1014static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1015 struct ipr_ext_vpd *vpd)
1016{
1017 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1018 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1019 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1020}
1021
ee0f05b8
BK		 1022/**
1023 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1024 * @vpd: vendor/product id/sn/wwn struct
1025 *
1026 * Return value:
1027 * none
1028 **/
1029static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1030{
1031 ipr_log_vpd(&vpd->vpd);
1032 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1033 be32_to_cpu(vpd->wwid[1]));
1034}
1035
1036/**
1037 * ipr_log_enhanced_cache_error - Log a cache error.
1038 * @ioa_cfg: ioa config struct
1039 * @hostrcb: hostrcb struct
1040 *
1041 * Return value:
1042 * none
1043 **/
1044static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1045 struct ipr_hostrcb *hostrcb)
1046{
1047 struct ipr_hostrcb_type_12_error *error =
1048 &hostrcb->hcam.u.error.u.type_12_error;
1049
1050 ipr_err("-----Current Configuration-----\n");
1051 ipr_err("Cache Directory Card Information:\n");
1052 ipr_log_ext_vpd(&error->ioa_vpd);
1053 ipr_err("Adapter Card Information:\n");
1054 ipr_log_ext_vpd(&error->cfc_vpd);
1055
1056 ipr_err("-----Expected Configuration-----\n");
1057 ipr_err("Cache Directory Card Information:\n");
1058 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1059 ipr_err("Adapter Card Information:\n");
1060 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1061
1062 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1063 be32_to_cpu(error->ioa_data[0]),
1064 be32_to_cpu(error->ioa_data[1]),
1065 be32_to_cpu(error->ioa_data[2]));
1066}
1067
1da177e4
LT		 1068/**
1069 * ipr_log_cache_error - Log a cache error.
1070 * @ioa_cfg: ioa config struct
1071 * @hostrcb: hostrcb struct
1072 *
1073 * Return value:
1074 * none
1075 **/
1076static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1077 struct ipr_hostrcb *hostrcb)
1078{
1079 struct ipr_hostrcb_type_02_error *error =
1080 &hostrcb->hcam.u.error.u.type_02_error;
1081
1082 ipr_err("-----Current Configuration-----\n");
1083 ipr_err("Cache Directory Card Information:\n");
cfc32139 1084 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1085 ipr_err("Adapter Card Information:\n");
cfc32139 1086 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1087
1088 ipr_err("-----Expected Configuration-----\n");
1089 ipr_err("Cache Directory Card Information:\n");
cfc32139 1090 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1091 ipr_err("Adapter Card Information:\n");
cfc32139 1092 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1093
1094 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1095 be32_to_cpu(error->ioa_data[0]),
1096 be32_to_cpu(error->ioa_data[1]),
1097 be32_to_cpu(error->ioa_data[2]));
1098}
1099
ee0f05b8
BK		 1100/**
1101 * ipr_log_enhanced_config_error - Log a configuration error.
1102 * @ioa_cfg: ioa config struct
1103 * @hostrcb: hostrcb struct
1104 *
1105 * Return value:
1106 * none
1107 **/
1108static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1109 struct ipr_hostrcb *hostrcb)
1110{
1111 int errors_logged, i;
1112 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1113 struct ipr_hostrcb_type_13_error *error;
1114
1115 error = &hostrcb->hcam.u.error.u.type_13_error;
1116 errors_logged = be32_to_cpu(error->errors_logged);
1117
1118 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1119 be32_to_cpu(error->errors_detected), errors_logged);
1120
1121 dev_entry = error->dev;
1122
1123 for (i = 0; i < errors_logged; i++, dev_entry++) {
1124 ipr_err_separator;
1125
1126 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1127 ipr_log_ext_vpd(&dev_entry->vpd);
1128
1129 ipr_err("-----New Device Information-----\n");
1130 ipr_log_ext_vpd(&dev_entry->new_vpd);
1131
1132 ipr_err("Cache Directory Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1134
1135 ipr_err("Adapter Card Information:\n");
1136 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1137 }
1138}
1139
1da177e4
LT		 1140/**
1141 * ipr_log_config_error - Log a configuration error.
1142 * @ioa_cfg: ioa config struct
1143 * @hostrcb: hostrcb struct
1144 *
1145 * Return value:
1146 * none
1147 **/
1148static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1149 struct ipr_hostrcb *hostrcb)
1150{
1151 int errors_logged, i;
1152 struct ipr_hostrcb_device_data_entry *dev_entry;
1153 struct ipr_hostrcb_type_03_error *error;
1154
1155 error = &hostrcb->hcam.u.error.u.type_03_error;
1156 errors_logged = be32_to_cpu(error->errors_logged);
1157
1158 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1159 be32_to_cpu(error->errors_detected), errors_logged);
1160
cfc32139 1161 dev_entry = error->dev;
1da177e4
LT		 1162
1163 for (i = 0; i < errors_logged; i++, dev_entry++) {
1164 ipr_err_separator;
1165
fa15b1f6 1166 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1167 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1168
1169 ipr_err("-----New Device Information-----\n");
cfc32139 1170 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1171
1172 ipr_err("Cache Directory Card Information:\n");
cfc32139 1173 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1174
1175 ipr_err("Adapter Card Information:\n");
cfc32139 1176 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1177
1178 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1179 be32_to_cpu(dev_entry->ioa_data[0]),
1180 be32_to_cpu(dev_entry->ioa_data[1]),
1181 be32_to_cpu(dev_entry->ioa_data[2]),
1182 be32_to_cpu(dev_entry->ioa_data[3]),
1183 be32_to_cpu(dev_entry->ioa_data[4]));
1184 }
1185}
1186
ee0f05b8
BK		 1187/**
1188 * ipr_log_enhanced_array_error - Log an array configuration error.
1189 * @ioa_cfg: ioa config struct
1190 * @hostrcb: hostrcb struct
1191 *
1192 * Return value:
1193 * none
1194 **/
1195static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1196 struct ipr_hostrcb *hostrcb)
1197{
1198 int i, num_entries;
1199 struct ipr_hostrcb_type_14_error *error;
1200 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1201 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1202
1203 error = &hostrcb->hcam.u.error.u.type_14_error;
1204
1205 ipr_err_separator;
1206
1207 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1208 error->protection_level,
1209 ioa_cfg->host->host_no,
1210 error->last_func_vset_res_addr.bus,
1211 error->last_func_vset_res_addr.target,
1212 error->last_func_vset_res_addr.lun);
1213
1214 ipr_err_separator;
1215
1216 array_entry = error->array_member;
1217 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1218 sizeof(error->array_member));
1219
1220 for (i = 0; i < num_entries; i++, array_entry++) {
1221 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1222 continue;
1223
1224 if (be32_to_cpu(error->exposed_mode_adn) == i)
1225 ipr_err("Exposed Array Member %d:\n", i);
1226 else
1227 ipr_err("Array Member %d:\n", i);
1228
1229 ipr_log_ext_vpd(&array_entry->vpd);
1230 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1231 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1232 "Expected Location");
1233
1234 ipr_err_separator;
1235 }
1236}
1237
1da177e4
LT		 1238/**
1239 * ipr_log_array_error - Log an array configuration error.
1240 * @ioa_cfg: ioa config struct
1241 * @hostrcb: hostrcb struct
1242 *
1243 * Return value:
1244 * none
1245 **/
1246static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1247 struct ipr_hostrcb *hostrcb)
1248{
1249 int i;
1250 struct ipr_hostrcb_type_04_error *error;
1251 struct ipr_hostrcb_array_data_entry *array_entry;
1252 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1253
1254 error = &hostrcb->hcam.u.error.u.type_04_error;
1255
1256 ipr_err_separator;
1257
1258 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1259 error->protection_level,
1260 ioa_cfg->host->host_no,
1261 error->last_func_vset_res_addr.bus,
1262 error->last_func_vset_res_addr.target,
1263 error->last_func_vset_res_addr.lun);
1264
1265 ipr_err_separator;
1266
1267 array_entry = error->array_member;
1268
1269 for (i = 0; i < 18; i++) {
cfc32139 1270 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1271 continue;
1272
fa15b1f6 1273 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1274 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1275 else
1da177e4 1276 ipr_err("Array Member %d:\n", i);
1da177e4 1277
cfc32139 1278 ipr_log_vpd(&array_entry->vpd);
1da177e4 1279
fa15b1f6
BK		 1280 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1281 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1282 "Expected Location");
1da177e4
LT		 1283
1284 ipr_err_separator;
1285
1286 if (i == 9)
1287 array_entry = error->array_member2;
1288 else
1289 array_entry++;
1290 }
1291}
1292
1293/**
b0df54bb 1294 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1295 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1296 * @data: IOA error data
1297 * @len: data length
1da177e4
LT		 1298 *
1299 * Return value:
1300 * none
1301 **/
ac719aba 1302static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1303{
1304 int i;
1da177e4 1305
b0df54bb 1306 if (len == 0)
1da177e4
LT		 1307 return;
1308
ac719aba
BK		 1309 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1310 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1311
b0df54bb 1312 for (i = 0; i < len / 4; i += 4) {
1da177e4 1313 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1314 be32_to_cpu(data[i]),
1315 be32_to_cpu(data[i+1]),
1316 be32_to_cpu(data[i+2]),
1317 be32_to_cpu(data[i+3]));
1da177e4
LT		 1318 }
1319}
1320
ee0f05b8
BK		 1321/**
1322 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1323 * @ioa_cfg: ioa config struct
1324 * @hostrcb: hostrcb struct
1325 *
1326 * Return value:
1327 * none
1328 **/
1329static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1330 struct ipr_hostrcb *hostrcb)
1331{
1332 struct ipr_hostrcb_type_17_error *error;
1333
1334 error = &hostrcb->hcam.u.error.u.type_17_error;
1335 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1336 strstrip(error->failure_reason);
ee0f05b8 1337
8cf093e2
BK		 1338 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1339 be32_to_cpu(hostrcb->hcam.u.error.prc));
1340 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1341 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1342 be32_to_cpu(hostrcb->hcam.length) -
1343 (offsetof(struct ipr_hostrcb_error, u) +
1344 offsetof(struct ipr_hostrcb_type_17_error, data)));
1345}
1346
b0df54bb
BK		 1347/**
1348 * ipr_log_dual_ioa_error - Log a dual adapter error.
1349 * @ioa_cfg: ioa config struct
1350 * @hostrcb: hostrcb struct
1351 *
1352 * Return value:
1353 * none
1354 **/
1355static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1356 struct ipr_hostrcb *hostrcb)
1357{
1358 struct ipr_hostrcb_type_07_error *error;
1359
1360 error = &hostrcb->hcam.u.error.u.type_07_error;
1361 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1362 strstrip(error->failure_reason);
b0df54bb 1363
8cf093e2
BK		 1364 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1365 be32_to_cpu(hostrcb->hcam.u.error.prc));
1366 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1367 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1368 be32_to_cpu(hostrcb->hcam.length) -
1369 (offsetof(struct ipr_hostrcb_error, u) +
1370 offsetof(struct ipr_hostrcb_type_07_error, data)));
1371}
1372
49dc6a18
BK		 1373static const struct {
1374 u8 active;
1375 char *desc;
1376} path_active_desc[] = {
1377 { IPR_PATH_NO_INFO, "Path" },
1378 { IPR_PATH_ACTIVE, "Active path" },
1379 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1380};
1381
1382static const struct {
1383 u8 state;
1384 char *desc;
1385} path_state_desc[] = {
1386 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1387 { IPR_PATH_HEALTHY, "is healthy" },
1388 { IPR_PATH_DEGRADED, "is degraded" },
1389 { IPR_PATH_FAILED, "is failed" }
1390};
1391
1392/**
1393 * ipr_log_fabric_path - Log a fabric path error
1394 * @hostrcb: hostrcb struct
1395 * @fabric: fabric descriptor
1396 *
1397 * Return value:
1398 * none
1399 **/
1400static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1401 struct ipr_hostrcb_fabric_desc *fabric)
1402{
1403 int i, j;
1404 u8 path_state = fabric->path_state;
1405 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1406 u8 state = path_state & IPR_PATH_STATE_MASK;
1407
1408 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1409 if (path_active_desc[i].active != active)
1410 continue;
1411
1412 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1413 if (path_state_desc[j].state != state)
1414 continue;
1415
1416 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1417 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1418 path_active_desc[i].desc, path_state_desc[j].desc,
1419 fabric->ioa_port);
1420 } else if (fabric->cascaded_expander == 0xff) {
1421 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1422 path_active_desc[i].desc, path_state_desc[j].desc,
1423 fabric->ioa_port, fabric->phy);
1424 } else if (fabric->phy == 0xff) {
1425 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1426 path_active_desc[i].desc, path_state_desc[j].desc,
1427 fabric->ioa_port, fabric->cascaded_expander);
1428 } else {
1429 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1430 path_active_desc[i].desc, path_state_desc[j].desc,
1431 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1432 }
1433 return;
1434 }
1435 }
1436
1437 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1438 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1439}
1440
1441static const struct {
1442 u8 type;
1443 char *desc;
1444} path_type_desc[] = {
1445 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1446 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1447 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1448 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1449};
1450
1451static const struct {
1452 u8 status;
1453 char *desc;
1454} path_status_desc[] = {
1455 { IPR_PATH_CFG_NO_PROB, "Functional" },
1456 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1457 { IPR_PATH_CFG_FAILED, "Failed" },
1458 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1459 { IPR_PATH_NOT_DETECTED, "Missing" },
1460 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1461};
1462
1463static const char *link_rate[] = {
1464 "unknown",
1465 "disabled",
1466 "phy reset problem",
1467 "spinup hold",
1468 "port selector",
1469 "unknown",
1470 "unknown",
1471 "unknown",
1472 "1.5Gbps",
1473 "3.0Gbps",
1474 "unknown",
1475 "unknown",
1476 "unknown",
1477 "unknown",
1478 "unknown",
1479 "unknown"
1480};
1481
1482/**
1483 * ipr_log_path_elem - Log a fabric path element.
1484 * @hostrcb: hostrcb struct
1485 * @cfg: fabric path element struct
1486 *
1487 * Return value:
1488 * none
1489 **/
1490static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1491 struct ipr_hostrcb_config_element *cfg)
1492{
1493 int i, j;
1494 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1495 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1496
1497 if (type == IPR_PATH_CFG_NOT_EXIST)
1498 return;
1499
1500 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1501 if (path_type_desc[i].type != type)
1502 continue;
1503
1504 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1505 if (path_status_desc[j].status != status)
1506 continue;
1507
1508 if (type == IPR_PATH_CFG_IOA_PORT) {
1509 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1510 path_status_desc[j].desc, path_type_desc[i].desc,
1511 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1512 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1513 } else {
1514 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1515 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1516 path_status_desc[j].desc, path_type_desc[i].desc,
1517 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1518 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1519 } else if (cfg->cascaded_expander == 0xff) {
1520 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1521 "WWN=%08X%08X\n", path_status_desc[j].desc,
1522 path_type_desc[i].desc, cfg->phy,
1523 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1524 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1525 } else if (cfg->phy == 0xff) {
1526 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1527 "WWN=%08X%08X\n", path_status_desc[j].desc,
1528 path_type_desc[i].desc, cfg->cascaded_expander,
1529 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1530 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1531 } else {
1532 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1533 "WWN=%08X%08X\n", path_status_desc[j].desc,
1534 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1535 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1536 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1537 }
1538 }
1539 return;
1540 }
1541 }
1542
1543 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1544 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1545 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1546 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1547}
1548
1549/**
1550 * ipr_log_fabric_error - Log a fabric error.
1551 * @ioa_cfg: ioa config struct
1552 * @hostrcb: hostrcb struct
1553 *
1554 * Return value:
1555 * none
1556 **/
1557static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1558 struct ipr_hostrcb *hostrcb)
1559{
1560 struct ipr_hostrcb_type_20_error *error;
1561 struct ipr_hostrcb_fabric_desc *fabric;
1562 struct ipr_hostrcb_config_element *cfg;
1563 int i, add_len;
1564
1565 error = &hostrcb->hcam.u.error.u.type_20_error;
1566 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1567 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1568
1569 add_len = be32_to_cpu(hostrcb->hcam.length) -
1570 (offsetof(struct ipr_hostrcb_error, u) +
1571 offsetof(struct ipr_hostrcb_type_20_error, desc));
1572
1573 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1574 ipr_log_fabric_path(hostrcb, fabric);
1575 for_each_fabric_cfg(fabric, cfg)
1576 ipr_log_path_elem(hostrcb, cfg);
1577
1578 add_len -= be16_to_cpu(fabric->length);
1579 fabric = (struct ipr_hostrcb_fabric_desc *)
1580 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1581 }
1582
ac719aba 1583 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1584}
1585
b0df54bb
BK		 1586/**
1587 * ipr_log_generic_error - Log an adapter error.
1588 * @ioa_cfg: ioa config struct
1589 * @hostrcb: hostrcb struct
1590 *
1591 * Return value:
1592 * none
1593 **/
1594static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1595 struct ipr_hostrcb *hostrcb)
1596{
ac719aba 1597 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 1598 be32_to_cpu(hostrcb->hcam.length));
1599}
1600
1da177e4
LT		 1601/**
1602 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1603 * @ioasc: IOASC
1604 *
1605 * This function will return the index of into the ipr_error_table
1606 * for the specified IOASC. If the IOASC is not in the table,
1607 * 0 will be returned, which points to the entry used for unknown errors.
1608 *
1609 * Return value:
1610 * index into the ipr_error_table
1611 **/
1612static u32 ipr_get_error(u32 ioasc)
1613{
1614 int i;
1615
1616 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1617 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1618 return i;
1619
1620 return 0;
1621}
1622
1623/**
1624 * ipr_handle_log_data - Log an adapter error.
1625 * @ioa_cfg: ioa config struct
1626 * @hostrcb: hostrcb struct
1627 *
1628 * This function logs an adapter error to the system.
1629 *
1630 * Return value:
1631 * none
1632 **/
1633static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1634 struct ipr_hostrcb *hostrcb)
1635{
1636 u32 ioasc;
1637 int error_index;
1638
1639 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1640 return;
1641
1642 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1643 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1644
1645 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1646
1647 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1648 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1649 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1650 scsi_report_bus_reset(ioa_cfg->host,
1651 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1652 }
1653
1654 error_index = ipr_get_error(ioasc);
1655
1656 if (!ipr_error_table[error_index].log_hcam)
1657 return;
1658
49dc6a18 1659 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1660
1661 /* Set indication we have logged an error */
1662 ioa_cfg->errors_logged++;
1663
933916f3 1664 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1665 return;
cf852037
BK		 1666 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1667 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1668
1669 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1670 case IPR_HOST_RCB_OVERLAY_ID_2:
1671 ipr_log_cache_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_3:
1674 ipr_log_config_error(ioa_cfg, hostrcb);
1675 break;
1676 case IPR_HOST_RCB_OVERLAY_ID_4:
1677 case IPR_HOST_RCB_OVERLAY_ID_6:
1678 ipr_log_array_error(ioa_cfg, hostrcb);
1679 break;
b0df54bb
BK		 1680 case IPR_HOST_RCB_OVERLAY_ID_7:
1681 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1682 break;
ee0f05b8
BK		 1683 case IPR_HOST_RCB_OVERLAY_ID_12:
1684 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_13:
1687 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1688 break;
1689 case IPR_HOST_RCB_OVERLAY_ID_14:
1690 case IPR_HOST_RCB_OVERLAY_ID_16:
1691 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1692 break;
1693 case IPR_HOST_RCB_OVERLAY_ID_17:
1694 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1695 break;
49dc6a18
BK		 1696 case IPR_HOST_RCB_OVERLAY_ID_20:
1697 ipr_log_fabric_error(ioa_cfg, hostrcb);
1698 break;
cf852037 1699 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1700 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1701 default:
a9cfca96 1702 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1703 break;
1704 }
1705}
1706
1707/**
1708 * ipr_process_error - Op done function for an adapter error log.
1709 * @ipr_cmd: ipr command struct
1710 *
1711 * This function is the op done function for an error log host
1712 * controlled async from the adapter. It will log the error and
1713 * send the HCAM back to the adapter.
1714 *
1715 * Return value:
1716 * none
1717 **/
1718static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1719{
1720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1721 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1723 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1724
1725 list_del(&hostrcb->queue);
1726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1727
1728 if (!ioasc) {
1729 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1730 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1731 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1732 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1733 dev_err(&ioa_cfg->pdev->dev,
1734 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1735 }
1736
1737 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1738}
1739
1740/**
1741 * ipr_timeout - An internally generated op has timed out.
1742 * @ipr_cmd: ipr command struct
1743 *
1744 * This function blocks host requests and initiates an
1745 * adapter reset.
1746 *
1747 * Return value:
1748 * none
1749 **/
1750static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1751{
1752 unsigned long lock_flags = 0;
1753 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1754
1755 ENTER;
1756 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1757
1758 ioa_cfg->errors_logged++;
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Adapter being reset due to command timeout.\n");
1761
1762 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1763 ioa_cfg->sdt_state = GET_DUMP;
1764
1765 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1766 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1767
1768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1769 LEAVE;
1770}
1771
1772/**
1773 * ipr_oper_timeout - Adapter timed out transitioning to operational
1774 * @ipr_cmd: ipr command struct
1775 *
1776 * This function blocks host requests and initiates an
1777 * adapter reset.
1778 *
1779 * Return value:
1780 * none
1781 **/
1782static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1783{
1784 unsigned long lock_flags = 0;
1785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1786
1787 ENTER;
1788 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1789
1790 ioa_cfg->errors_logged++;
1791 dev_err(&ioa_cfg->pdev->dev,
1792 "Adapter timed out transitioning to operational.\n");
1793
1794 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1795 ioa_cfg->sdt_state = GET_DUMP;
1796
1797 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1798 if (ipr_fastfail)
1799 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1800 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1801 }
1802
1803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1804 LEAVE;
1805}
1806
1807/**
1808 * ipr_reset_reload - Reset/Reload the IOA
1809 * @ioa_cfg: ioa config struct
1810 * @shutdown_type: shutdown type
1811 *
1812 * This function resets the adapter and re-initializes it.
1813 * This function assumes that all new host commands have been stopped.
1814 * Return value:
1815 * SUCCESS / FAILED
1816 **/
1817static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1818 enum ipr_shutdown_type shutdown_type)
1819{
1820 if (!ioa_cfg->in_reset_reload)
1821 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1822
1823 spin_unlock_irq(ioa_cfg->host->host_lock);
1824 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1825 spin_lock_irq(ioa_cfg->host->host_lock);
1826
1827 /* If we got hit with a host reset while we were already resetting
1828 the adapter for some reason, and the reset failed. */
1829 if (ioa_cfg->ioa_is_dead) {
1830 ipr_trace;
1831 return FAILED;
1832 }
1833
1834 return SUCCESS;
1835}
1836
1837/**
1838 * ipr_find_ses_entry - Find matching SES in SES table
1839 * @res: resource entry struct of SES
1840 *
1841 * Return value:
1842 * pointer to SES table entry / NULL on failure
1843 **/
1844static const struct ipr_ses_table_entry *
1845ipr_find_ses_entry(struct ipr_resource_entry *res)
1846{
1847 int i, j, matches;
1848 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1849
1850 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1851 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1852 if (ste->compare_product_id_byte[j] == 'X') {
1853 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1854 matches++;
1855 else
1856 break;
1857 } else
1858 matches++;
1859 }
1860
1861 if (matches == IPR_PROD_ID_LEN)
1862 return ste;
1863 }
1864
1865 return NULL;
1866}
1867
1868/**
1869 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1870 * @ioa_cfg: ioa config struct
1871 * @bus: SCSI bus
1872 * @bus_width: bus width
1873 *
1874 * Return value:
1875 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1876 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1877 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1878 * max 160MHz = max 320MB/sec).
1879 **/
1880static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1881{
1882 struct ipr_resource_entry *res;
1883 const struct ipr_ses_table_entry *ste;
1884 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1885
1886 /* Loop through each config table entry in the config table buffer */
1887 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1888 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1889 continue;
1890
1891 if (bus != res->cfgte.res_addr.bus)
1892 continue;
1893
1894 if (!(ste = ipr_find_ses_entry(res)))
1895 continue;
1896
1897 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1898 }
1899
1900 return max_xfer_rate;
1901}
1902
1903/**
1904 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1905 * @ioa_cfg: ioa config struct
1906 * @max_delay: max delay in micro-seconds to wait
1907 *
1908 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1909 *
1910 * Return value:
1911 * 0 on success / other on failure
1912 **/
1913static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1914{
1915 volatile u32 pcii_reg;
1916 int delay = 1;
1917
1918 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1919 while (delay < max_delay) {
1920 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1921
1922 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1923 return 0;
1924
1925 /* udelay cannot be used if delay is more than a few milliseconds */
1926 if ((delay / 1000) > MAX_UDELAY_MS)
1927 mdelay(delay / 1000);
1928 else
1929 udelay(delay);
1930
1931 delay += delay;
1932 }
1933 return -EIO;
1934}
1935
1936/**
1937 * ipr_get_ldump_data_section - Dump IOA memory
1938 * @ioa_cfg: ioa config struct
1939 * @start_addr: adapter address to dump
1940 * @dest: destination kernel buffer
1941 * @length_in_words: length to dump in 4 byte words
1942 *
1943 * Return value:
1944 * 0 on success / -EIO on failure
1945 **/
1946static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1947 u32 start_addr,
1948 __be32 *dest, u32 length_in_words)
1949{
1950 volatile u32 temp_pcii_reg;
1951 int i, delay = 0;
1952
1953 /* Write IOA interrupt reg starting LDUMP state */
1954 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1955 ioa_cfg->regs.set_uproc_interrupt_reg);
1956
1957 /* Wait for IO debug acknowledge */
1958 if (ipr_wait_iodbg_ack(ioa_cfg,
1959 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1960 dev_err(&ioa_cfg->pdev->dev,
1961 "IOA dump long data transfer timeout\n");
1962 return -EIO;
1963 }
1964
1965 /* Signal LDUMP interlocked - clear IO debug ack */
1966 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1967 ioa_cfg->regs.clr_interrupt_reg);
1968
1969 /* Write Mailbox with starting address */
1970 writel(start_addr, ioa_cfg->ioa_mailbox);
1971
1972 /* Signal address valid - clear IOA Reset alert */
1973 writel(IPR_UPROCI_RESET_ALERT,
1974 ioa_cfg->regs.clr_uproc_interrupt_reg);
1975
1976 for (i = 0; i < length_in_words; i++) {
1977 /* Wait for IO debug acknowledge */
1978 if (ipr_wait_iodbg_ack(ioa_cfg,
1979 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1980 dev_err(&ioa_cfg->pdev->dev,
1981 "IOA dump short data transfer timeout\n");
1982 return -EIO;
1983 }
1984
1985 /* Read data from mailbox and increment destination pointer */
1986 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1987 dest++;
1988
1989 /* For all but the last word of data, signal data received */
1990 if (i < (length_in_words - 1)) {
1991 /* Signal dump data received - Clear IO debug Ack */
1992 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1993 ioa_cfg->regs.clr_interrupt_reg);
1994 }
1995 }
1996
1997 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1998 writel(IPR_UPROCI_RESET_ALERT,
1999 ioa_cfg->regs.set_uproc_interrupt_reg);
2000
2001 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2002 ioa_cfg->regs.clr_uproc_interrupt_reg);
2003
2004 /* Signal dump data received - Clear IO debug Ack */
2005 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2006 ioa_cfg->regs.clr_interrupt_reg);
2007
2008 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2009 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2010 temp_pcii_reg =
2011 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2012
2013 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2014 return 0;
2015
2016 udelay(10);
2017 delay += 10;
2018 }
2019
2020 return 0;
2021}
2022
2023#ifdef CONFIG_SCSI_IPR_DUMP
2024/**
2025 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2026 * @ioa_cfg: ioa config struct
2027 * @pci_address: adapter address
2028 * @length: length of data to copy
2029 *
2030 * Copy data from PCI adapter to kernel buffer.
2031 * Note: length MUST be a 4 byte multiple
2032 * Return value:
2033 * 0 on success / other on failure
2034 **/
2035static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2036 unsigned long pci_address, u32 length)
2037{
2038 int bytes_copied = 0;
2039 int cur_len, rc, rem_len, rem_page_len;
2040 __be32 *page;
2041 unsigned long lock_flags = 0;
2042 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2043
2044 while (bytes_copied < length &&
2045 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2046 if (ioa_dump->page_offset >= PAGE_SIZE ||
2047 ioa_dump->page_offset == 0) {
2048 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2049
2050 if (!page) {
2051 ipr_trace;
2052 return bytes_copied;
2053 }
2054
2055 ioa_dump->page_offset = 0;
2056 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2057 ioa_dump->next_page_index++;
2058 } else
2059 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2060
2061 rem_len = length - bytes_copied;
2062 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2063 cur_len = min(rem_len, rem_page_len);
2064
2065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2066 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2067 rc = -EIO;
2068 } else {
2069 rc = ipr_get_ldump_data_section(ioa_cfg,
2070 pci_address + bytes_copied,
2071 &page[ioa_dump->page_offset / 4],
2072 (cur_len / sizeof(u32)));
2073 }
2074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2075
2076 if (!rc) {
2077 ioa_dump->page_offset += cur_len;
2078 bytes_copied += cur_len;
2079 } else {
2080 ipr_trace;
2081 break;
2082 }
2083 schedule();
2084 }
2085
2086 return bytes_copied;
2087}
2088
2089/**
2090 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2091 * @hdr: dump entry header struct
2092 *
2093 * Return value:
2094 * nothing
2095 **/
2096static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2097{
2098 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2099 hdr->num_elems = 1;
2100 hdr->offset = sizeof(*hdr);
2101 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2102}
2103
2104/**
2105 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2106 * @ioa_cfg: ioa config struct
2107 * @driver_dump: driver dump struct
2108 *
2109 * Return value:
2110 * nothing
2111 **/
2112static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2113 struct ipr_driver_dump *driver_dump)
2114{
2115 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2116
2117 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2118 driver_dump->ioa_type_entry.hdr.len =
2119 sizeof(struct ipr_dump_ioa_type_entry) -
2120 sizeof(struct ipr_dump_entry_header);
2121 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2122 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2123 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2124 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2125 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2126 ucode_vpd->minor_release[1];
2127 driver_dump->hdr.num_entries++;
2128}
2129
2130/**
2131 * ipr_dump_version_data - Fill in the driver version in the dump.
2132 * @ioa_cfg: ioa config struct
2133 * @driver_dump: driver dump struct
2134 *
2135 * Return value:
2136 * nothing
2137 **/
2138static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2139 struct ipr_driver_dump *driver_dump)
2140{
2141 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2142 driver_dump->version_entry.hdr.len =
2143 sizeof(struct ipr_dump_version_entry) -
2144 sizeof(struct ipr_dump_entry_header);
2145 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2146 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2147 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2148 driver_dump->hdr.num_entries++;
2149}
2150
2151/**
2152 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2153 * @ioa_cfg: ioa config struct
2154 * @driver_dump: driver dump struct
2155 *
2156 * Return value:
2157 * nothing
2158 **/
2159static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2160 struct ipr_driver_dump *driver_dump)
2161{
2162 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2163 driver_dump->trace_entry.hdr.len =
2164 sizeof(struct ipr_dump_trace_entry) -
2165 sizeof(struct ipr_dump_entry_header);
2166 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2167 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2168 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2169 driver_dump->hdr.num_entries++;
2170}
2171
2172/**
2173 * ipr_dump_location_data - Fill in the IOA location in the dump.
2174 * @ioa_cfg: ioa config struct
2175 * @driver_dump: driver dump struct
2176 *
2177 * Return value:
2178 * nothing
2179 **/
2180static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2181 struct ipr_driver_dump *driver_dump)
2182{
2183 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2184 driver_dump->location_entry.hdr.len =
2185 sizeof(struct ipr_dump_location_entry) -
2186 sizeof(struct ipr_dump_entry_header);
2187 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2188 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
71610f55 2189 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
1da177e4
LT		 2190 driver_dump->hdr.num_entries++;
2191}
2192
2193/**
2194 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2195 * @ioa_cfg: ioa config struct
2196 * @dump: dump struct
2197 *
2198 * Return value:
2199 * nothing
2200 **/
2201static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2202{
2203 unsigned long start_addr, sdt_word;
2204 unsigned long lock_flags = 0;
2205 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2206 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2207 u32 num_entries, start_off, end_off;
2208 u32 bytes_to_copy, bytes_copied, rc;
2209 struct ipr_sdt *sdt;
2210 int i;
2211
2212 ENTER;
2213
2214 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2215
2216 if (ioa_cfg->sdt_state != GET_DUMP) {
2217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2218 return;
2219 }
2220
2221 start_addr = readl(ioa_cfg->ioa_mailbox);
2222
2223 if (!ipr_sdt_is_fmt2(start_addr)) {
2224 dev_err(&ioa_cfg->pdev->dev,
2225 "Invalid dump table format: %lx\n", start_addr);
2226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2227 return;
2228 }
2229
2230 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2231
2232 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2233
2234 /* Initialize the overall dump header */
2235 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2236 driver_dump->hdr.num_entries = 1;
2237 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2238 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2239 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2240 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2241
2242 ipr_dump_version_data(ioa_cfg, driver_dump);
2243 ipr_dump_location_data(ioa_cfg, driver_dump);
2244 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2245 ipr_dump_trace_data(ioa_cfg, driver_dump);
2246
2247 /* Update dump_header */
2248 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2249
2250 /* IOA Dump entry */
2251 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2252 ioa_dump->format = IPR_SDT_FMT2;
2253 ioa_dump->hdr.len = 0;
2254 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2255 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2256
2257 /* First entries in sdt are actually a list of dump addresses and
2258 lengths to gather the real dump data. sdt represents the pointer
2259 to the ioa generated dump table. Dump data will be extracted based
2260 on entries in this table */
2261 sdt = &ioa_dump->sdt;
2262
2263 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2264 sizeof(struct ipr_sdt) / sizeof(__be32));
2265
2266 /* Smart Dump table is ready to use and the first entry is valid */
2267 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2268 dev_err(&ioa_cfg->pdev->dev,
2269 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2270 rc, be32_to_cpu(sdt->hdr.state));
2271 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2272 ioa_cfg->sdt_state = DUMP_OBTAINED;
2273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2274 return;
2275 }
2276
2277 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2278
2279 if (num_entries > IPR_NUM_SDT_ENTRIES)
2280 num_entries = IPR_NUM_SDT_ENTRIES;
2281
2282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2283
2284 for (i = 0; i < num_entries; i++) {
2285 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2286 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2287 break;
2288 }
2289
2290 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2291 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2292 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2293 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2294
2295 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2296 bytes_to_copy = end_off - start_off;
2297 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2298 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2299 continue;
2300 }
2301
2302 /* Copy data from adapter to driver buffers */
2303 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2304 bytes_to_copy);
2305
2306 ioa_dump->hdr.len += bytes_copied;
2307
2308 if (bytes_copied != bytes_to_copy) {
2309 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2310 break;
2311 }
2312 }
2313 }
2314 }
2315
2316 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2317
2318 /* Update dump_header */
2319 driver_dump->hdr.len += ioa_dump->hdr.len;
2320 wmb();
2321 ioa_cfg->sdt_state = DUMP_OBTAINED;
2322 LEAVE;
2323}
2324
2325#else
2326#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2327#endif
2328
2329/**
2330 * ipr_release_dump - Free adapter dump memory
2331 * @kref: kref struct
2332 *
2333 * Return value:
2334 * nothing
2335 **/
2336static void ipr_release_dump(struct kref *kref)
2337{
2338 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2339 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2340 unsigned long lock_flags = 0;
2341 int i;
2342
2343 ENTER;
2344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2345 ioa_cfg->dump = NULL;
2346 ioa_cfg->sdt_state = INACTIVE;
2347 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2348
2349 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2350 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2351
2352 kfree(dump);
2353 LEAVE;
2354}
2355
2356/**
2357 * ipr_worker_thread - Worker thread
c4028958 2358 * @work: ioa config struct
1da177e4
LT		 2359 *
2360 * Called at task level from a work thread. This function takes care
2361 * of adding and removing device from the mid-layer as configuration
2362 * changes are detected by the adapter.
2363 *
2364 * Return value:
2365 * nothing
2366 **/
c4028958 2367static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2368{
2369 unsigned long lock_flags;
2370 struct ipr_resource_entry *res;
2371 struct scsi_device *sdev;
2372 struct ipr_dump *dump;
c4028958
DH		 2373 struct ipr_ioa_cfg *ioa_cfg =
2374 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2375 u8 bus, target, lun;
2376 int did_work;
2377
2378 ENTER;
2379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2380
2381 if (ioa_cfg->sdt_state == GET_DUMP) {
2382 dump = ioa_cfg->dump;
2383 if (!dump) {
2384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2385 return;
2386 }
2387 kref_get(&dump->kref);
2388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2389 ipr_get_ioa_dump(ioa_cfg, dump);
2390 kref_put(&dump->kref, ipr_release_dump);
2391
2392 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2393 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2394 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2395 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2396 return;
2397 }
2398
2399restart:
2400 do {
2401 did_work = 0;
2402 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2403 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2404 return;
2405 }
2406
2407 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2408 if (res->del_from_ml && res->sdev) {
2409 did_work = 1;
2410 sdev = res->sdev;
2411 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2412 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2414 scsi_remove_device(sdev);
2415 scsi_device_put(sdev);
2416 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2417 }
2418 break;
2419 }
2420 }
2421 } while(did_work);
2422
2423 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2424 if (res->add_to_ml) {
2425 bus = res->cfgte.res_addr.bus;
2426 target = res->cfgte.res_addr.target;
2427 lun = res->cfgte.res_addr.lun;
1121b794 2428 res->add_to_ml = 0;
1da177e4
LT		 2429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2430 scsi_add_device(ioa_cfg->host, bus, target, lun);
2431 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2432 goto restart;
2433 }
2434 }
2435
2436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
ee959b00 2437 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2438 LEAVE;
2439}
2440
2441#ifdef CONFIG_SCSI_IPR_TRACE
2442/**
2443 * ipr_read_trace - Dump the adapter trace
2444 * @kobj: kobject struct
91a69029 2445 * @bin_attr: bin_attribute struct
1da177e4
LT		 2446 * @buf: buffer
2447 * @off: offset
2448 * @count: buffer size
2449 *
2450 * Return value:
2451 * number of bytes printed to buffer
2452 **/
91a69029
ZR		 2453static ssize_t ipr_read_trace(struct kobject *kobj,
2454 struct bin_attribute *bin_attr,
2455 char *buf, loff_t off, size_t count)
1da177e4 2456{
ee959b00
TJ		 2457 struct device *dev = container_of(kobj, struct device, kobj);
2458 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2459 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2460 unsigned long lock_flags = 0;
d777aaf3 2461 ssize_t ret;
1da177e4
LT		 2462
2463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 2464 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
2465 IPR_TRACE_SIZE);
1da177e4 2466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 2467
2468 return ret;
1da177e4
LT		 2469}
2470
2471static struct bin_attribute ipr_trace_attr = {
2472 .attr = {
2473 .name = "trace",
2474 .mode = S_IRUGO,
2475 },
2476 .size = 0,
2477 .read = ipr_read_trace,
2478};
2479#endif
2480
62275040
BK		 2481static const struct {
2482 enum ipr_cache_state state;
2483 char *name;
2484} cache_state [] = {
2485 { CACHE_NONE, "none" },
2486 { CACHE_DISABLED, "disabled" },
2487 { CACHE_ENABLED, "enabled" }
2488};
2489
2490/**
2491 * ipr_show_write_caching - Show the write caching attribute
ee959b00
TJ		 2492 * @dev: device struct
2493 * @buf: buffer
62275040
BK		 2494 *
2495 * Return value:
2496 * number of bytes printed to buffer
2497 **/
ee959b00
TJ		 2498static ssize_t ipr_show_write_caching(struct device *dev,
2499 struct device_attribute *attr, char *buf)
62275040 2500{
ee959b00 2501 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags = 0;
2504 int i, len = 0;
2505
2506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2507 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2508 if (cache_state[i].state == ioa_cfg->cache_state) {
2509 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2510 break;
2511 }
2512 }
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 return len;
2515}
2516
2517
2518/**
2519 * ipr_store_write_caching - Enable/disable adapter write cache
ee959b00
TJ		 2520 * @dev: device struct
2521 * @buf: buffer
2522 * @count: buffer size
62275040
BK		 2523 *
2524 * This function will enable/disable adapter write cache.
2525 *
2526 * Return value:
2527 * count on success / other on failure
2528 **/
ee959b00
TJ		 2529static ssize_t ipr_store_write_caching(struct device *dev,
2530 struct device_attribute *attr,
2531 const char *buf, size_t count)
62275040 2532{
ee959b00 2533 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2534 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2535 unsigned long lock_flags = 0;
2536 enum ipr_cache_state new_state = CACHE_INVALID;
2537 int i;
2538
2539 if (!capable(CAP_SYS_ADMIN))
2540 return -EACCES;
2541 if (ioa_cfg->cache_state == CACHE_NONE)
2542 return -EINVAL;
2543
2544 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2545 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2546 new_state = cache_state[i].state;
2547 break;
2548 }
2549 }
2550
2551 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2552 return -EINVAL;
2553
2554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2555 if (ioa_cfg->cache_state == new_state) {
2556 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2557 return count;
2558 }
2559
2560 ioa_cfg->cache_state = new_state;
2561 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2562 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2563 if (!ioa_cfg->in_reset_reload)
2564 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2567
2568 return count;
2569}
2570
ee959b00 2571static struct device_attribute ipr_ioa_cache_attr = {
62275040
BK		 2572 .attr = {
2573 .name = "write_cache",
2574 .mode = S_IRUGO | S_IWUSR,
2575 },
2576 .show = ipr_show_write_caching,
2577 .store = ipr_store_write_caching
2578};
2579
1da177e4
LT		 2580/**
2581 * ipr_show_fw_version - Show the firmware version
ee959b00
TJ		 2582 * @dev: class device struct
2583 * @buf: buffer
1da177e4
LT		 2584 *
2585 * Return value:
2586 * number of bytes printed to buffer
2587 **/
ee959b00
TJ		 2588static ssize_t ipr_show_fw_version(struct device *dev,
2589 struct device_attribute *attr, char *buf)
1da177e4 2590{
ee959b00 2591 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 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
ee959b00 2606static struct device_attribute ipr_fw_version_attr = {
1da177e4
LT		 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
ee959b00
TJ		 2616 * @dev: class device struct
2617 * @buf: buffer
1da177e4
LT		 2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
ee959b00
TJ		 2622static ssize_t ipr_show_log_level(struct device *dev,
2623 struct device_attribute *attr, char *buf)
1da177e4 2624{
ee959b00 2625 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2626 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2627 unsigned long lock_flags = 0;
2628 int len;
2629
2630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2631 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2632 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2633 return len;
2634}
2635
2636/**
2637 * ipr_store_log_level - Change the adapter's error logging level
ee959b00
TJ		 2638 * @dev: class device struct
2639 * @buf: buffer
1da177e4
LT		 2640 *
2641 * Return value:
2642 * number of bytes printed to buffer
2643 **/
ee959b00
TJ		 2644static ssize_t ipr_store_log_level(struct device *dev,
2645 struct device_attribute *attr,
1da177e4
LT		 2646 const char *buf, size_t count)
2647{
ee959b00 2648 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2650 unsigned long lock_flags = 0;
2651
2652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2653 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2655 return strlen(buf);
2656}
2657
ee959b00 2658static struct device_attribute ipr_log_level_attr = {
1da177e4
LT		 2659 .attr = {
2660 .name = "log_level",
2661 .mode = S_IRUGO | S_IWUSR,
2662 },
2663 .show = ipr_show_log_level,
2664 .store = ipr_store_log_level
2665};
2666
2667/**
2668 * ipr_store_diagnostics - IOA Diagnostics interface
ee959b00
TJ		 2669 * @dev: device struct
2670 * @buf: buffer
2671 * @count: buffer size
1da177e4
LT		 2672 *
2673 * This function will reset the adapter and wait a reasonable
2674 * amount of time for any errors that the adapter might log.
2675 *
2676 * Return value:
2677 * count on success / other on failure
2678 **/
ee959b00
TJ		 2679static ssize_t ipr_store_diagnostics(struct device *dev,
2680 struct device_attribute *attr,
1da177e4
LT		 2681 const char *buf, size_t count)
2682{
ee959b00 2683 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2684 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2685 unsigned long lock_flags = 0;
2686 int rc = count;
2687
2688 if (!capable(CAP_SYS_ADMIN))
2689 return -EACCES;
2690
1da177e4 2691 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2692 while(ioa_cfg->in_reset_reload) {
2693 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2694 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2695 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2696 }
2697
1da177e4
LT		 2698 ioa_cfg->errors_logged = 0;
2699 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2700
2701 if (ioa_cfg->in_reset_reload) {
2702 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2703 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2704
2705 /* Wait for a second for any errors to be logged */
2706 msleep(1000);
2707 } else {
2708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2709 return -EIO;
2710 }
2711
2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2713 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2714 rc = -EIO;
2715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2716
2717 return rc;
2718}
2719
ee959b00 2720static struct device_attribute ipr_diagnostics_attr = {
1da177e4
LT		 2721 .attr = {
2722 .name = "run_diagnostics",
2723 .mode = S_IWUSR,
2724 },
2725 .store = ipr_store_diagnostics
2726};
2727
f37eb54b
BK		 2728/**
2729 * ipr_show_adapter_state - Show the adapter's state
ee959b00
TJ		 2730 * @class_dev: device struct
2731 * @buf: buffer
f37eb54b
BK		 2732 *
2733 * Return value:
2734 * number of bytes printed to buffer
2735 **/
ee959b00
TJ		 2736static ssize_t ipr_show_adapter_state(struct device *dev,
2737 struct device_attribute *attr, char *buf)
f37eb54b 2738{
ee959b00 2739 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2740 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2741 unsigned long lock_flags = 0;
2742 int len;
2743
2744 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2745 if (ioa_cfg->ioa_is_dead)
2746 len = snprintf(buf, PAGE_SIZE, "offline\n");
2747 else
2748 len = snprintf(buf, PAGE_SIZE, "online\n");
2749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2750 return len;
2751}
2752
2753/**
2754 * ipr_store_adapter_state - Change adapter state
ee959b00
TJ		 2755 * @dev: device struct
2756 * @buf: buffer
2757 * @count: buffer size
f37eb54b
BK		 2758 *
2759 * This function will change the adapter's state.
2760 *
2761 * Return value:
2762 * count on success / other on failure
2763 **/
ee959b00
TJ		 2764static ssize_t ipr_store_adapter_state(struct device *dev,
2765 struct device_attribute *attr,
f37eb54b
BK		 2766 const char *buf, size_t count)
2767{
ee959b00 2768 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2769 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2770 unsigned long lock_flags;
2771 int result = count;
2772
2773 if (!capable(CAP_SYS_ADMIN))
2774 return -EACCES;
2775
2776 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2777 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2778 ioa_cfg->ioa_is_dead = 0;
2779 ioa_cfg->reset_retries = 0;
2780 ioa_cfg->in_ioa_bringdown = 0;
2781 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2782 }
2783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2784 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2785
2786 return result;
2787}
2788
ee959b00 2789static struct device_attribute ipr_ioa_state_attr = {
f37eb54b 2790 .attr = {
49dd0961 2791 .name = "online_state",
f37eb54b
BK		 2792 .mode = S_IRUGO | S_IWUSR,
2793 },
2794 .show = ipr_show_adapter_state,
2795 .store = ipr_store_adapter_state
2796};
2797
1da177e4
LT		 2798/**
2799 * ipr_store_reset_adapter - Reset the adapter
ee959b00
TJ		 2800 * @dev: device struct
2801 * @buf: buffer
2802 * @count: buffer size
1da177e4
LT		 2803 *
2804 * This function will reset the adapter.
2805 *
2806 * Return value:
2807 * count on success / other on failure
2808 **/
ee959b00
TJ		 2809static ssize_t ipr_store_reset_adapter(struct device *dev,
2810 struct device_attribute *attr,
1da177e4
LT		 2811 const char *buf, size_t count)
2812{
ee959b00 2813 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2814 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2815 unsigned long lock_flags;
2816 int result = count;
2817
2818 if (!capable(CAP_SYS_ADMIN))
2819 return -EACCES;
2820
2821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2822 if (!ioa_cfg->in_reset_reload)
2823 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2825 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2826
2827 return result;
2828}
2829
ee959b00 2830static struct device_attribute ipr_ioa_reset_attr = {
1da177e4
LT		 2831 .attr = {
2832 .name = "reset_host",
2833 .mode = S_IWUSR,
2834 },
2835 .store = ipr_store_reset_adapter
2836};
2837
2838/**
2839 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2840 * @buf_len: buffer length
2841 *
2842 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2843 * list to use for microcode download
2844 *
2845 * Return value:
2846 * pointer to sglist / NULL on failure
2847 **/
2848static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2849{
2850 int sg_size, order, bsize_elem, num_elem, i, j;
2851 struct ipr_sglist *sglist;
2852 struct scatterlist *scatterlist;
2853 struct page *page;
2854
2855 /* Get the minimum size per scatter/gather element */
2856 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2857
2858 /* Get the actual size per element */
2859 order = get_order(sg_size);
2860
2861 /* Determine the actual number of bytes per element */
2862 bsize_elem = PAGE_SIZE * (1 << order);
2863
2864 /* Determine the actual number of sg entries needed */
2865 if (buf_len % bsize_elem)
2866 num_elem = (buf_len / bsize_elem) + 1;
2867 else
2868 num_elem = buf_len / bsize_elem;
2869
2870 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2871 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2872 (sizeof(struct scatterlist) * (num_elem - 1)),
2873 GFP_KERNEL);
2874
2875 if (sglist == NULL) {
2876 ipr_trace;
2877 return NULL;
2878 }
2879
1da177e4 2880 scatterlist = sglist->scatterlist;
45711f1a 2881 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 2882
2883 sglist->order = order;
2884 sglist->num_sg = num_elem;
2885
2886 /* Allocate a bunch of sg elements */
2887 for (i = 0; i < num_elem; i++) {
2888 page = alloc_pages(GFP_KERNEL, order);
2889 if (!page) {
2890 ipr_trace;
2891
2892 /* Free up what we already allocated */
2893 for (j = i - 1; j >= 0; j--)
45711f1a 2894 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 2895 kfree(sglist);
2896 return NULL;
2897 }
2898
642f1490 2899 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 2900 }
2901
2902 return sglist;
2903}
2904
2905/**
2906 * ipr_free_ucode_buffer - Frees a microcode download buffer
2907 * @p_dnld: scatter/gather list pointer
2908 *
2909 * Free a DMA'able ucode download buffer previously allocated with
2910 * ipr_alloc_ucode_buffer
2911 *
2912 * Return value:
2913 * nothing
2914 **/
2915static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2916{
2917 int i;
2918
2919 for (i = 0; i < sglist->num_sg; i++)
45711f1a 2920 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 2921
2922 kfree(sglist);
2923}
2924
2925/**
2926 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2927 * @sglist: scatter/gather list pointer
2928 * @buffer: buffer pointer
2929 * @len: buffer length
2930 *
2931 * Copy a microcode image from a user buffer into a buffer allocated by
2932 * ipr_alloc_ucode_buffer
2933 *
2934 * Return value:
2935 * 0 on success / other on failure
2936 **/
2937static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2938 u8 *buffer, u32 len)
2939{
2940 int bsize_elem, i, result = 0;
2941 struct scatterlist *scatterlist;
2942 void *kaddr;
2943
2944 /* Determine the actual number of bytes per element */
2945 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2946
2947 scatterlist = sglist->scatterlist;
2948
2949 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 2950 struct page *page = sg_page(&scatterlist[i]);
2951
2952 kaddr = kmap(page);
1da177e4 2953 memcpy(kaddr, buffer, bsize_elem);
45711f1a 2954 kunmap(page);
1da177e4
LT		 2955
2956 scatterlist[i].length = bsize_elem;
2957
2958 if (result != 0) {
2959 ipr_trace;
2960 return result;
2961 }
2962 }
2963
2964 if (len % bsize_elem) {
45711f1a
JA		 2965 struct page *page = sg_page(&scatterlist[i]);
2966
2967 kaddr = kmap(page);
1da177e4 2968 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 2969 kunmap(page);
1da177e4
LT		 2970
2971 scatterlist[i].length = len % bsize_elem;
2972 }
2973
2974 sglist->buffer_len = len;
2975 return result;
2976}
2977
2978/**
12baa420 2979 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2980 * @ipr_cmd: ipr command struct
2981 * @sglist: scatter/gather list
1da177e4 2982 *
12baa420 2983 * Builds a microcode download IOA data list (IOADL).
1da177e4 2984 *
1da177e4 2985 **/
12baa420
BK		 2986static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2987 struct ipr_sglist *sglist)
1da177e4 2988{
1da177e4
LT		 2989 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2990 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2991 struct scatterlist *scatterlist = sglist->scatterlist;
2992 int i;
2993
12baa420 2994 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2995 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2996 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2997 ioarcb->write_ioadl_len =
2998 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2999
3000 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3001 ioadl[i].flags_and_data_len =
3002 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3003 ioadl[i].address =
3004 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3005 }
3006
12baa420
BK		 3007 ioadl[i-1].flags_and_data_len |=
3008 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3009}
3010
3011/**
3012 * ipr_update_ioa_ucode - Update IOA's microcode
3013 * @ioa_cfg: ioa config struct
3014 * @sglist: scatter/gather list
3015 *
3016 * Initiate an adapter reset to update the IOA's microcode
3017 *
3018 * Return value:
3019 * 0 on success / -EIO on failure
3020 **/
3021static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3022 struct ipr_sglist *sglist)
3023{
3024 unsigned long lock_flags;
3025
3026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3027 while(ioa_cfg->in_reset_reload) {
3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3029 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3030 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3031 }
12baa420
BK		 3032
3033 if (ioa_cfg->ucode_sglist) {
3034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3035 dev_err(&ioa_cfg->pdev->dev,
3036 "Microcode download already in progress\n");
3037 return -EIO;
1da177e4 3038 }
12baa420
BK		 3039
3040 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3041 sglist->num_sg, DMA_TO_DEVICE);
3042
3043 if (!sglist->num_dma_sg) {
3044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3045 dev_err(&ioa_cfg->pdev->dev,
3046 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3047 return -EIO;
3048 }
3049
12baa420
BK		 3050 ioa_cfg->ucode_sglist = sglist;
3051 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3053 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3054
3055 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3056 ioa_cfg->ucode_sglist = NULL;
3057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3058 return 0;
3059}
3060
3061/**
3062 * ipr_store_update_fw - Update the firmware on the adapter
ee959b00
TJ		 3063 * @class_dev: device struct
3064 * @buf: buffer
3065 * @count: buffer size
1da177e4
LT		 3066 *
3067 * This function will update the firmware on the adapter.
3068 *
3069 * Return value:
3070 * count on success / other on failure
3071 **/
ee959b00
TJ		 3072static ssize_t ipr_store_update_fw(struct device *dev,
3073 struct device_attribute *attr,
3074 const char *buf, size_t count)
1da177e4 3075{
ee959b00 3076 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3077 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3078 struct ipr_ucode_image_header *image_hdr;
3079 const struct firmware *fw_entry;
3080 struct ipr_sglist *sglist;
1da177e4
LT		 3081 char fname[100];
3082 char *src;
3083 int len, result, dnld_size;
3084
3085 if (!capable(CAP_SYS_ADMIN))
3086 return -EACCES;
3087
3088 len = snprintf(fname, 99, "%s", buf);
3089 fname[len-1] = '\0';
3090
3091 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3092 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3093 return -EIO;
3094 }
3095
3096 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3097
3098 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3099 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3100 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3101 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3102 release_firmware(fw_entry);
3103 return -EINVAL;
3104 }
3105
3106 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3107 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3108 sglist = ipr_alloc_ucode_buffer(dnld_size);
3109
3110 if (!sglist) {
3111 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3112 release_firmware(fw_entry);
3113 return -ENOMEM;
3114 }
3115
3116 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3117
3118 if (result) {
3119 dev_err(&ioa_cfg->pdev->dev,
3120 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3121 goto out;
1da177e4
LT		 3122 }
3123
12baa420 3124 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3125
12baa420
BK		 3126 if (!result)
3127 result = count;
3128out:
1da177e4
LT		 3129 ipr_free_ucode_buffer(sglist);
3130 release_firmware(fw_entry);
12baa420 3131 return result;
1da177e4
LT		 3132}
3133
ee959b00 3134static struct device_attribute ipr_update_fw_attr = {
1da177e4
LT		 3135 .attr = {
3136 .name = "update_fw",
3137 .mode = S_IWUSR,
3138 },
3139 .store = ipr_store_update_fw
3140};
3141
ee959b00 3142static struct device_attribute *ipr_ioa_attrs[] = {
1da177e4
LT		 3143 &ipr_fw_version_attr,
3144 &ipr_log_level_attr,
3145 &ipr_diagnostics_attr,
f37eb54b 3146 &ipr_ioa_state_attr,
1da177e4
LT		 3147 &ipr_ioa_reset_attr,
3148 &ipr_update_fw_attr,
62275040 3149 &ipr_ioa_cache_attr,
1da177e4
LT		 3150 NULL,
3151};
3152
3153#ifdef CONFIG_SCSI_IPR_DUMP
3154/**
3155 * ipr_read_dump - Dump the adapter
3156 * @kobj: kobject struct
91a69029 3157 * @bin_attr: bin_attribute struct
1da177e4
LT		 3158 * @buf: buffer
3159 * @off: offset
3160 * @count: buffer size
3161 *
3162 * Return value:
3163 * number of bytes printed to buffer
3164 **/
91a69029
ZR		 3165static ssize_t ipr_read_dump(struct kobject *kobj,
3166 struct bin_attribute *bin_attr,
3167 char *buf, loff_t off, size_t count)
1da177e4 3168{
ee959b00 3169 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3170 struct Scsi_Host *shost = class_to_shost(cdev);
3171 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3172 struct ipr_dump *dump;
3173 unsigned long lock_flags = 0;
3174 char *src;
3175 int len;
3176 size_t rc = count;
3177
3178 if (!capable(CAP_SYS_ADMIN))
3179 return -EACCES;
3180
3181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3182 dump = ioa_cfg->dump;
3183
3184 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3186 return 0;
3187 }
3188 kref_get(&dump->kref);
3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3190
3191 if (off > dump->driver_dump.hdr.len) {
3192 kref_put(&dump->kref, ipr_release_dump);
3193 return 0;
3194 }
3195
3196 if (off + count > dump->driver_dump.hdr.len) {
3197 count = dump->driver_dump.hdr.len - off;
3198 rc = count;
3199 }
3200
3201 if (count && off < sizeof(dump->driver_dump)) {
3202 if (off + count > sizeof(dump->driver_dump))
3203 len = sizeof(dump->driver_dump) - off;
3204 else
3205 len = count;
3206 src = (u8 *)&dump->driver_dump + off;
3207 memcpy(buf, src, len);
3208 buf += len;
3209 off += len;
3210 count -= len;
3211 }
3212
3213 off -= sizeof(dump->driver_dump);
3214
3215 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3216 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3217 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3218 else
3219 len = count;
3220 src = (u8 *)&dump->ioa_dump + off;
3221 memcpy(buf, src, len);
3222 buf += len;
3223 off += len;
3224 count -= len;
3225 }
3226
3227 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3228
3229 while (count) {
3230 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3231 len = PAGE_ALIGN(off) - off;
3232 else
3233 len = count;
3234 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3235 src += off & ~PAGE_MASK;
3236 memcpy(buf, src, len);
3237 buf += len;
3238 off += len;
3239 count -= len;
3240 }
3241
3242 kref_put(&dump->kref, ipr_release_dump);
3243 return rc;
3244}
3245
3246/**
3247 * ipr_alloc_dump - Prepare for adapter dump
3248 * @ioa_cfg: ioa config struct
3249 *
3250 * Return value:
3251 * 0 on success / other on failure
3252 **/
3253static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3254{
3255 struct ipr_dump *dump;
3256 unsigned long lock_flags = 0;
3257
0bc42e35 3258 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3259
3260 if (!dump) {
3261 ipr_err("Dump memory allocation failed\n");
3262 return -ENOMEM;
3263 }
3264
1da177e4
LT		 3265 kref_init(&dump->kref);
3266 dump->ioa_cfg = ioa_cfg;
3267
3268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3269
3270 if (INACTIVE != ioa_cfg->sdt_state) {
3271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3272 kfree(dump);
3273 return 0;
3274 }
3275
3276 ioa_cfg->dump = dump;
3277 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3278 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3279 ioa_cfg->dump_taken = 1;
3280 schedule_work(&ioa_cfg->work_q);
3281 }
3282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3283
1da177e4
LT		 3284 return 0;
3285}
3286
3287/**
3288 * ipr_free_dump - Free adapter dump memory
3289 * @ioa_cfg: ioa config struct
3290 *
3291 * Return value:
3292 * 0 on success / other on failure
3293 **/
3294static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3295{
3296 struct ipr_dump *dump;
3297 unsigned long lock_flags = 0;
3298
3299 ENTER;
3300
3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3302 dump = ioa_cfg->dump;
3303 if (!dump) {
3304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3305 return 0;
3306 }
3307
3308 ioa_cfg->dump = NULL;
3309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3310
3311 kref_put(&dump->kref, ipr_release_dump);
3312
3313 LEAVE;
3314 return 0;
3315}
3316
3317/**
3318 * ipr_write_dump - Setup dump state of adapter
3319 * @kobj: kobject struct
91a69029 3320 * @bin_attr: bin_attribute struct
1da177e4
LT		 3321 * @buf: buffer
3322 * @off: offset
3323 * @count: buffer size
3324 *
3325 * Return value:
3326 * number of bytes printed to buffer
3327 **/
91a69029
ZR		 3328static ssize_t ipr_write_dump(struct kobject *kobj,
3329 struct bin_attribute *bin_attr,
3330 char *buf, loff_t off, size_t count)
1da177e4 3331{
ee959b00 3332 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3333 struct Scsi_Host *shost = class_to_shost(cdev);
3334 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3335 int rc;
3336
3337 if (!capable(CAP_SYS_ADMIN))
3338 return -EACCES;
3339
3340 if (buf[0] == '1')
3341 rc = ipr_alloc_dump(ioa_cfg);
3342 else if (buf[0] == '0')
3343 rc = ipr_free_dump(ioa_cfg);
3344 else
3345 return -EINVAL;
3346
3347 if (rc)
3348 return rc;
3349 else
3350 return count;
3351}
3352
3353static struct bin_attribute ipr_dump_attr = {
3354 .attr = {
3355 .name = "dump",
3356 .mode = S_IRUSR | S_IWUSR,
3357 },
3358 .size = 0,
3359 .read = ipr_read_dump,
3360 .write = ipr_write_dump
3361};
3362#else
3363static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3364#endif
3365
3366/**
3367 * ipr_change_queue_depth - Change the device's queue depth
3368 * @sdev: scsi device struct
3369 * @qdepth: depth to set
3370 *
3371 * Return value:
3372 * actual depth set
3373 **/
3374static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3375{
35a39691
BK		 3376 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3377 struct ipr_resource_entry *res;
3378 unsigned long lock_flags = 0;
3379
3380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3381 res = (struct ipr_resource_entry *)sdev->hostdata;
3382
3383 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3384 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3386
1da177e4
LT		 3387 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3388 return sdev->queue_depth;
3389}
3390
3391/**
3392 * ipr_change_queue_type - Change the device's queue type
3393 * @dsev: scsi device struct
3394 * @tag_type: type of tags to use
3395 *
3396 * Return value:
3397 * actual queue type set
3398 **/
3399static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3400{
3401 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3402 struct ipr_resource_entry *res;
3403 unsigned long lock_flags = 0;
3404
3405 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3406 res = (struct ipr_resource_entry *)sdev->hostdata;
3407
3408 if (res) {
3409 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3410 /*
3411 * We don't bother quiescing the device here since the
3412 * adapter firmware does it for us.
3413 */
3414 scsi_set_tag_type(sdev, tag_type);
3415
3416 if (tag_type)
3417 scsi_activate_tcq(sdev, sdev->queue_depth);
3418 else
3419 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3420 } else
3421 tag_type = 0;
3422 } else
3423 tag_type = 0;
3424
3425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3426 return tag_type;
3427}
3428
3429/**
3430 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3431 * @dev: device struct
3432 * @buf: buffer
3433 *
3434 * Return value:
3435 * number of bytes printed to buffer
3436 **/
10523b3b 3437static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3438{
3439 struct scsi_device *sdev = to_scsi_device(dev);
3440 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3441 struct ipr_resource_entry *res;
3442 unsigned long lock_flags = 0;
3443 ssize_t len = -ENXIO;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 res = (struct ipr_resource_entry *)sdev->hostdata;
3447 if (res)
3448 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3449 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3450 return len;
3451}
3452
3453static struct device_attribute ipr_adapter_handle_attr = {
3454 .attr = {
3455 .name = "adapter_handle",
3456 .mode = S_IRUSR,
3457 },
3458 .show = ipr_show_adapter_handle
3459};
3460
3461static struct device_attribute *ipr_dev_attrs[] = {
3462 &ipr_adapter_handle_attr,
3463 NULL,
3464};
3465
3466/**
3467 * ipr_biosparam - Return the HSC mapping
3468 * @sdev: scsi device struct
3469 * @block_device: block device pointer
3470 * @capacity: capacity of the device
3471 * @parm: Array containing returned HSC values.
3472 *
3473 * This function generates the HSC parms that fdisk uses.
3474 * We want to make sure we return something that places partitions
3475 * on 4k boundaries for best performance with the IOA.
3476 *
3477 * Return value:
3478 * 0 on success
3479 **/
3480static int ipr_biosparam(struct scsi_device *sdev,
3481 struct block_device *block_device,
3482 sector_t capacity, int *parm)
3483{
3484 int heads, sectors;
3485 sector_t cylinders;
3486
3487 heads = 128;
3488 sectors = 32;
3489
3490 cylinders = capacity;
3491 sector_div(cylinders, (128 * 32));
3492
3493 /* return result */
3494 parm[0] = heads;
3495 parm[1] = sectors;
3496 parm[2] = cylinders;
3497
3498 return 0;
3499}
3500
35a39691
BK		 3501/**
3502 * ipr_find_starget - Find target based on bus/target.
3503 * @starget: scsi target struct
3504 *
3505 * Return value:
3506 * resource entry pointer if found / NULL if not found
3507 **/
3508static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3509{
3510 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3511 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3512 struct ipr_resource_entry *res;
3513
3514 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3515 if ((res->cfgte.res_addr.bus == starget->channel) &&
3516 (res->cfgte.res_addr.target == starget->id) &&
3517 (res->cfgte.res_addr.lun == 0)) {
3518 return res;
3519 }
3520 }
3521
3522 return NULL;
3523}
3524
3525static struct ata_port_info sata_port_info;
3526
3527/**
3528 * ipr_target_alloc - Prepare for commands to a SCSI target
3529 * @starget: scsi target struct
3530 *
3531 * If the device is a SATA device, this function allocates an
3532 * ATA port with libata, else it does nothing.
3533 *
3534 * Return value:
3535 * 0 on success / non-0 on failure
3536 **/
3537static int ipr_target_alloc(struct scsi_target *starget)
3538{
3539 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3540 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3541 struct ipr_sata_port *sata_port;
3542 struct ata_port *ap;
3543 struct ipr_resource_entry *res;
3544 unsigned long lock_flags;
3545
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 res = ipr_find_starget(starget);
3548 starget->hostdata = NULL;
3549
3550 if (res && ipr_is_gata(res)) {
3551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3552 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3553 if (!sata_port)
3554 return -ENOMEM;
3555
3556 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3557 if (ap) {
3558 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3559 sata_port->ioa_cfg = ioa_cfg;
3560 sata_port->ap = ap;
3561 sata_port->res = res;
3562
3563 res->sata_port = sata_port;
3564 ap->private_data = sata_port;
3565 starget->hostdata = sata_port;
3566 } else {
3567 kfree(sata_port);
3568 return -ENOMEM;
3569 }
3570 }
3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3572
3573 return 0;
3574}
3575
3576/**
3577 * ipr_target_destroy - Destroy a SCSI target
3578 * @starget: scsi target struct
3579 *
3580 * If the device was a SATA device, this function frees the libata
3581 * ATA port, else it does nothing.
3582 *
3583 **/
3584static void ipr_target_destroy(struct scsi_target *starget)
3585{
3586 struct ipr_sata_port *sata_port = starget->hostdata;
3587
3588 if (sata_port) {
3589 starget->hostdata = NULL;
3590 ata_sas_port_destroy(sata_port->ap);
3591 kfree(sata_port);
3592 }
3593}
3594
3595/**
3596 * ipr_find_sdev - Find device based on bus/target/lun.
3597 * @sdev: scsi device struct
3598 *
3599 * Return value:
3600 * resource entry pointer if found / NULL if not found
3601 **/
3602static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3603{
3604 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3605 struct ipr_resource_entry *res;
3606
3607 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3608 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3609 (res->cfgte.res_addr.target == sdev->id) &&
3610 (res->cfgte.res_addr.lun == sdev->lun))
3611 return res;
3612 }
3613
3614 return NULL;
3615}
3616
1da177e4
LT		 3617/**
3618 * ipr_slave_destroy - Unconfigure a SCSI device
3619 * @sdev: scsi device struct
3620 *
3621 * Return value:
3622 * nothing
3623 **/
3624static void ipr_slave_destroy(struct scsi_device *sdev)
3625{
3626 struct ipr_resource_entry *res;
3627 struct ipr_ioa_cfg *ioa_cfg;
3628 unsigned long lock_flags = 0;
3629
3630 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3631
3632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3633 res = (struct ipr_resource_entry *) sdev->hostdata;
3634 if (res) {
35a39691
BK		 3635 if (res->sata_port)
3636 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3637 sdev->hostdata = NULL;
3638 res->sdev = NULL;
35a39691 3639 res->sata_port = NULL;
1da177e4
LT		 3640 }
3641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3642}
3643
3644/**
3645 * ipr_slave_configure - Configure a SCSI device
3646 * @sdev: scsi device struct
3647 *
3648 * This function configures the specified scsi device.
3649 *
3650 * Return value:
3651 * 0 on success
3652 **/
3653static int ipr_slave_configure(struct scsi_device *sdev)
3654{
3655 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3656 struct ipr_resource_entry *res;
3657 unsigned long lock_flags = 0;
3658
3659 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3660 res = sdev->hostdata;
3661 if (res) {
3662 if (ipr_is_af_dasd_device(res))
3663 sdev->type = TYPE_RAID;
0726ce26 3664 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3665 sdev->scsi_level = 4;
0726ce26
BK		 3666 sdev->no_uld_attach = 1;
3667 }
1da177e4 3668 if (ipr_is_vset_device(res)) {
242f9dcb
JA		 3669 blk_queue_rq_timeout(sdev->request_queue,
3670 IPR_VSET_RW_TIMEOUT);
1da177e4
LT		 3671 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3672 }
e4fbf44e 3673 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3674 sdev->allow_restart = 1;
35a39691
BK		 3675 if (ipr_is_gata(res) && res->sata_port) {
3676 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3677 ata_sas_slave_configure(sdev, res->sata_port->ap);
3678 } else {
3679 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3680 }
1da177e4
LT		 3681 }
3682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3683 return 0;
3684}
3685
35a39691
BK		 3686/**
3687 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3688 * @sdev: scsi device struct
3689 *
3690 * This function initializes an ATA port so that future commands
3691 * sent through queuecommand will work.
3692 *
3693 * Return value:
3694 * 0 on success
3695 **/
3696static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3697{
3698 struct ipr_sata_port *sata_port = NULL;
3699 int rc = -ENXIO;
3700
3701 ENTER;
3702 if (sdev->sdev_target)
3703 sata_port = sdev->sdev_target->hostdata;
3704 if (sata_port)
3705 rc = ata_sas_port_init(sata_port->ap);
3706 if (rc)
3707 ipr_slave_destroy(sdev);
3708
3709 LEAVE;
3710 return rc;
3711}
3712
1da177e4
LT		 3713/**
3714 * ipr_slave_alloc - Prepare for commands to a device.
3715 * @sdev: scsi device struct
3716 *
3717 * This function saves a pointer to the resource entry
3718 * in the scsi device struct if the device exists. We
3719 * can then use this pointer in ipr_queuecommand when
3720 * handling new commands.
3721 *
3722 * Return value:
692aebfc 3723 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3724 **/
3725static int ipr_slave_alloc(struct scsi_device *sdev)
3726{
3727 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3728 struct ipr_resource_entry *res;
3729 unsigned long lock_flags;
692aebfc 3730 int rc = -ENXIO;
1da177e4
LT		 3731
3732 sdev->hostdata = NULL;
3733
3734 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3735
35a39691
BK		 3736 res = ipr_find_sdev(sdev);
3737 if (res) {
3738 res->sdev = sdev;
3739 res->add_to_ml = 0;
3740 res->in_erp = 0;
3741 sdev->hostdata = res;
3742 if (!ipr_is_naca_model(res))
3743 res->needs_sync_complete = 1;
3744 rc = 0;
3745 if (ipr_is_gata(res)) {
3746 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3747 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3748 }
3749 }
3750
3751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3752
692aebfc 3753 return rc;
1da177e4
LT		 3754}
3755
3756/**
3757 * ipr_eh_host_reset - Reset the host adapter
3758 * @scsi_cmd: scsi command struct
3759 *
3760 * Return value:
3761 * SUCCESS / FAILED
3762 **/
df0ae249 3763static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3764{
3765 struct ipr_ioa_cfg *ioa_cfg;
3766 int rc;
3767
3768 ENTER;
3769 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3770
3771 dev_err(&ioa_cfg->pdev->dev,
3772 "Adapter being reset as a result of error recovery.\n");
3773
3774 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3775 ioa_cfg->sdt_state = GET_DUMP;
3776
3777 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3778
3779 LEAVE;
3780 return rc;
3781}
3782
df0ae249
JG		 3783static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3784{
3785 int rc;
3786
3787 spin_lock_irq(cmd->device->host->host_lock);
3788 rc = __ipr_eh_host_reset(cmd);
3789 spin_unlock_irq(cmd->device->host->host_lock);
3790
3791 return rc;
3792}
3793
c6513096
BK		 3794/**
3795 * ipr_device_reset - Reset the device
3796 * @ioa_cfg: ioa config struct
3797 * @res: resource entry struct
3798 *
3799 * This function issues a device reset to the affected device.
3800 * If the device is a SCSI device, a LUN reset will be sent
3801 * to the device first. If that does not work, a target reset
35a39691
BK		 3802 * will be sent. If the device is a SATA device, a PHY reset will
3803 * be sent.
c6513096
BK		 3804 *
3805 * Return value:
3806 * 0 on success / non-zero on failure
3807 **/
3808static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3809 struct ipr_resource_entry *res)
3810{
3811 struct ipr_cmnd *ipr_cmd;
3812 struct ipr_ioarcb *ioarcb;
3813 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3814 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3815 u32 ioasc;
3816
3817 ENTER;
3818 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3819 ioarcb = &ipr_cmd->ioarcb;
3820 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3821 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3822
3823 ioarcb->res_handle = res->cfgte.res_handle;
3824 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3825 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3826 if (ipr_is_gata(res)) {
3827 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3828 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3829 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3830 }
c6513096
BK		 3831
3832 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3833 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3834 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3835 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3836 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3837 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3838
3839 LEAVE;
3840 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3841}
3842
35a39691
BK		 3843/**
3844 * ipr_sata_reset - Reset the SATA port
cc0680a5 3845 * @link: SATA link to reset
35a39691
BK		 3846 * @classes: class of the attached device
3847 *
cc0680a5 3848 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 3849 *
3850 * Return value:
3851 * 0 on success / non-zero on failure
3852 **/
cc0680a5 3853static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 3854 unsigned long deadline)
35a39691 3855{
cc0680a5 3856 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 3857 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3858 struct ipr_resource_entry *res;
3859 unsigned long lock_flags = 0;
3860 int rc = -ENXIO;
3861
3862 ENTER;
3863 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3864 while(ioa_cfg->in_reset_reload) {
3865 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3866 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3867 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3868 }
3869
35a39691
BK		 3870 res = sata_port->res;
3871 if (res) {
3872 rc = ipr_device_reset(ioa_cfg, res);
3873 switch(res->cfgte.proto) {
3874 case IPR_PROTO_SATA:
3875 case IPR_PROTO_SAS_STP:
3876 *classes = ATA_DEV_ATA;
3877 break;
3878 case IPR_PROTO_SATA_ATAPI:
3879 case IPR_PROTO_SAS_STP_ATAPI:
3880 *classes = ATA_DEV_ATAPI;
3881 break;
3882 default:
3883 *classes = ATA_DEV_UNKNOWN;
3884 break;
3885 };
3886 }
3887
3888 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3889 LEAVE;
3890 return rc;
3891}
3892
1da177e4
LT		 3893/**
3894 * ipr_eh_dev_reset - Reset the device
3895 * @scsi_cmd: scsi command struct
3896 *
3897 * This function issues a device reset to the affected device.
3898 * A LUN reset will be sent to the device first. If that does
3899 * not work, a target reset will be sent.
3900 *
3901 * Return value:
3902 * SUCCESS / FAILED
3903 **/
94d0e7b8 3904static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3905{
3906 struct ipr_cmnd *ipr_cmd;
3907 struct ipr_ioa_cfg *ioa_cfg;
3908 struct ipr_resource_entry *res;
35a39691
BK		 3909 struct ata_port *ap;
3910 int rc = 0;
1da177e4
LT		 3911
3912 ENTER;
3913 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3914 res = scsi_cmd->device->hostdata;
3915
eeb88307 3916 if (!res)
1da177e4
LT		 3917 return FAILED;
3918
3919 /*
3920 * If we are currently going through reset/reload, return failed. This will force the
3921 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3922 * reset to complete
3923 */
3924 if (ioa_cfg->in_reset_reload)
3925 return FAILED;
3926 if (ioa_cfg->ioa_is_dead)
3927 return FAILED;
3928
3929 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3930 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3931 if (ipr_cmd->scsi_cmd)
3932 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3933 if (ipr_cmd->qc)
3934 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3935 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3936 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3937 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3938 }
1da177e4
LT		 3939 }
3940 }
3941
3942 res->resetting_device = 1;
fb3ed3cb 3943 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3944
3945 if (ipr_is_gata(res) && res->sata_port) {
3946 ap = res->sata_port->ap;
3947 spin_unlock_irq(scsi_cmd->device->host->host_lock);
a1efdaba 3948 ata_std_error_handler(ap);
35a39691 3949 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3950
3951 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3952 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3953 rc = -EIO;
3954 break;
3955 }
3956 }
35a39691
BK		 3957 } else
3958 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3959 res->resetting_device = 0;
3960
1da177e4 3961 LEAVE;
c6513096 3962 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3963}
3964
94d0e7b8
JG		 3965static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3966{
3967 int rc;
3968
3969 spin_lock_irq(cmd->device->host->host_lock);
3970 rc = __ipr_eh_dev_reset(cmd);
3971 spin_unlock_irq(cmd->device->host->host_lock);
3972
3973 return rc;
3974}
3975
1da177e4
LT		 3976/**
3977 * ipr_bus_reset_done - Op done function for bus reset.
3978 * @ipr_cmd: ipr command struct
3979 *
3980 * This function is the op done function for a bus reset
3981 *
3982 * Return value:
3983 * none
3984 **/
3985static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3986{
3987 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3988 struct ipr_resource_entry *res;
3989
3990 ENTER;
3991 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3992 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3993 sizeof(res->cfgte.res_handle))) {
3994 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3995 break;
3996 }
3997 }
3998
3999 /*
4000 * If abort has not completed, indicate the reset has, else call the
4001 * abort's done function to wake the sleeping eh thread
4002 */
4003 if (ipr_cmd->sibling->sibling)
4004 ipr_cmd->sibling->sibling = NULL;
4005 else
4006 ipr_cmd->sibling->done(ipr_cmd->sibling);
4007
4008 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4009 LEAVE;
4010}
4011
4012/**
4013 * ipr_abort_timeout - An abort task has timed out
4014 * @ipr_cmd: ipr command struct
4015 *
4016 * This function handles when an abort task times out. If this
4017 * happens we issue a bus reset since we have resources tied
4018 * up that must be freed before returning to the midlayer.
4019 *
4020 * Return value:
4021 * none
4022 **/
4023static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4024{
4025 struct ipr_cmnd *reset_cmd;
4026 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4027 struct ipr_cmd_pkt *cmd_pkt;
4028 unsigned long lock_flags = 0;
4029
4030 ENTER;
4031 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4032 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4033 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4034 return;
4035 }
4036
fb3ed3cb 4037 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4038 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4039 ipr_cmd->sibling = reset_cmd;
4040 reset_cmd->sibling = ipr_cmd;
4041 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4042 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4043 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4044 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4045 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4046
4047 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4048 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4049 LEAVE;
4050}
4051
4052/**
4053 * ipr_cancel_op - Cancel specified op
4054 * @scsi_cmd: scsi command struct
4055 *
4056 * This function cancels specified op.
4057 *
4058 * Return value:
4059 * SUCCESS / FAILED
4060 **/
4061static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4062{
4063 struct ipr_cmnd *ipr_cmd;
4064 struct ipr_ioa_cfg *ioa_cfg;
4065 struct ipr_resource_entry *res;
4066 struct ipr_cmd_pkt *cmd_pkt;
4067 u32 ioasc;
4068 int op_found = 0;
4069
4070 ENTER;
4071 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4072 res = scsi_cmd->device->hostdata;
4073
8fa728a2
JG		 4074 /* If we are currently going through reset/reload, return failed.
4075 * This will force the mid-layer to call ipr_eh_host_reset,
4076 * which will then go to sleep and wait for the reset to complete
4077 */
4078 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4079 return FAILED;
04d9768f 4080 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4081 return FAILED;
4082
4083 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4084 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4085 ipr_cmd->done = ipr_scsi_eh_done;
4086 op_found = 1;
4087 break;
4088 }
4089 }
4090
4091 if (!op_found)
4092 return SUCCESS;
4093
4094 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4095 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4096 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4097 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4098 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4099 ipr_cmd->u.sdev = scsi_cmd->device;
4100
fb3ed3cb
BK		 4101 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4102 scsi_cmd->cmnd[0]);
1da177e4
LT		 4103 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4104 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4105
4106 /*
4107 * If the abort task timed out and we sent a bus reset, we will get
4108 * one the following responses to the abort
4109 */
4110 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4111 ioasc = 0;
4112 ipr_trace;
4113 }
4114
4115 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4116 if (!ipr_is_naca_model(res))
4117 res->needs_sync_complete = 1;
1da177e4
LT		 4118
4119 LEAVE;
4120 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4121}
4122
4123/**
4124 * ipr_eh_abort - Abort a single op
4125 * @scsi_cmd: scsi command struct
4126 *
4127 * Return value:
4128 * SUCCESS / FAILED
4129 **/
4130static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4131{
8fa728a2
JG		 4132 unsigned long flags;
4133 int rc;
1da177e4
LT		 4134
4135 ENTER;
1da177e4 4136
8fa728a2
JG		 4137 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4138 rc = ipr_cancel_op(scsi_cmd);
4139 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4140
4141 LEAVE;
8fa728a2 4142 return rc;
1da177e4
LT		 4143}
4144
4145/**
4146 * ipr_handle_other_interrupt - Handle "other" interrupts
4147 * @ioa_cfg: ioa config struct
4148 * @int_reg: interrupt register
4149 *
4150 * Return value:
4151 * IRQ_NONE / IRQ_HANDLED
4152 **/
4153static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4154 volatile u32 int_reg)
4155{
4156 irqreturn_t rc = IRQ_HANDLED;
4157
4158 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4159 /* Mask the interrupt */
4160 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4161
4162 /* Clear the interrupt */
4163 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4164 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4165
4166 list_del(&ioa_cfg->reset_cmd->queue);
4167 del_timer(&ioa_cfg->reset_cmd->timer);
4168 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4169 } else {
4170 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4171 ioa_cfg->ioa_unit_checked = 1;
4172 else
4173 dev_err(&ioa_cfg->pdev->dev,
4174 "Permanent IOA failure. 0x%08X\n", int_reg);
4175
4176 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4177 ioa_cfg->sdt_state = GET_DUMP;
4178
4179 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4180 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4181 }
4182
4183 return rc;
4184}
4185
4186/**
4187 * ipr_isr - Interrupt service routine
4188 * @irq: irq number
4189 * @devp: pointer to ioa config struct
1da177e4
LT		 4190 *
4191 * Return value:
4192 * IRQ_NONE / IRQ_HANDLED
4193 **/
7d12e780 4194static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4195{
4196 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4197 unsigned long lock_flags = 0;
4198 volatile u32 int_reg, int_mask_reg;
4199 u32 ioasc;
4200 u16 cmd_index;
4201 struct ipr_cmnd *ipr_cmd;
4202 irqreturn_t rc = IRQ_NONE;
4203
4204 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4205
4206 /* If interrupts are disabled, ignore the interrupt */
4207 if (!ioa_cfg->allow_interrupts) {
4208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4209 return IRQ_NONE;
4210 }
4211
4212 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4213 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4214
4215 /* If an interrupt on the adapter did not occur, ignore it */
4216 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4218 return IRQ_NONE;
4219 }
4220
4221 while (1) {
4222 ipr_cmd = NULL;
4223
4224 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4225 ioa_cfg->toggle_bit) {
4226
4227 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4228 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4229
4230 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4231 ioa_cfg->errors_logged++;
4232 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4233
4234 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4235 ioa_cfg->sdt_state = GET_DUMP;
4236
4237 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4238 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4239 return IRQ_HANDLED;
4240 }
4241
4242 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4243
4244 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4245
4246 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4247
4248 list_del(&ipr_cmd->queue);
4249 del_timer(&ipr_cmd->timer);
4250 ipr_cmd->done(ipr_cmd);
4251
4252 rc = IRQ_HANDLED;
4253
4254 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4255 ioa_cfg->hrrq_curr++;
4256 } else {
4257 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4258 ioa_cfg->toggle_bit ^= 1u;
4259 }
4260 }
4261
4262 if (ipr_cmd != NULL) {
4263 /* Clear the PCI interrupt */
4264 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4265 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4266 } else
4267 break;
4268 }
4269
4270 if (unlikely(rc == IRQ_NONE))
4271 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4272
4273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4274 return rc;
4275}
4276
4277/**
4278 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4279 * @ioa_cfg: ioa config struct
4280 * @ipr_cmd: ipr command struct
4281 *
4282 * Return value:
4283 * 0 on success / -1 on failure
4284 **/
4285static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4286 struct ipr_cmnd *ipr_cmd)
4287{
63015bc9
FT		 4288 int i, nseg;
4289 struct scatterlist *sg;
1da177e4
LT		 4290 u32 length;
4291 u32 ioadl_flags = 0;
4292 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4293 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4294 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4295
63015bc9
FT		 4296 length = scsi_bufflen(scsi_cmd);
4297 if (!length)
1da177e4
LT		 4298 return 0;
4299
63015bc9
FT		 4300 nseg = scsi_dma_map(scsi_cmd);
4301 if (nseg < 0) {
4302 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4303 return -1;
4304 }
51b1c7e1 4305
63015bc9
FT		 4306 ipr_cmd->dma_use_sg = nseg;
4307
4308 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4309 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4310 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4311 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4312 ioarcb->write_ioadl_len =
4313 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4314 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4315 ioadl_flags = IPR_IOADL_FLAGS_READ;
4316 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4317 ioarcb->read_ioadl_len =
4318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4319 }
1da177e4 4320
63015bc9
FT		 4321 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4322 ioadl = ioarcb->add_data.u.ioadl;
4323 ioarcb->write_ioadl_addr =
4324 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4325 offsetof(struct ipr_ioarcb, add_data));
4326 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4327 }
1da177e4 4328
63015bc9
FT		 4329 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4330 ioadl[i].flags_and_data_len =
4331 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4332 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4333 }
4334
63015bc9
FT		 4335 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4336 return 0;
1da177e4
LT		 4337}
4338
4339/**
4340 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4341 * @scsi_cmd: scsi command struct
4342 *
4343 * Return value:
4344 * task attributes
4345 **/
4346static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4347{
4348 u8 tag[2];
4349 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4350
4351 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4352 switch (tag[0]) {
4353 case MSG_SIMPLE_TAG:
4354 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4355 break;
4356 case MSG_HEAD_TAG:
4357 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4358 break;
4359 case MSG_ORDERED_TAG:
4360 rc = IPR_FLAGS_LO_ORDERED_TASK;
4361 break;
4362 };
4363 }
4364
4365 return rc;
4366}
4367
4368/**
4369 * ipr_erp_done - Process completion of ERP for a device
4370 * @ipr_cmd: ipr command struct
4371 *
4372 * This function copies the sense buffer into the scsi_cmd
4373 * struct and pushes the scsi_done function.
4374 *
4375 * Return value:
4376 * nothing
4377 **/
4378static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4379{
4380 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4381 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4382 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4383 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4384
4385 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4386 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4387 scmd_printk(KERN_ERR, scsi_cmd,
4388 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4389 } else {
4390 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4391 SCSI_SENSE_BUFFERSIZE);
4392 }
4393
4394 if (res) {
ee0a90fa
BK		 4395 if (!ipr_is_naca_model(res))
4396 res->needs_sync_complete = 1;
1da177e4
LT		 4397 res->in_erp = 0;
4398 }
63015bc9 4399 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4400 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4401 scsi_cmd->scsi_done(scsi_cmd);
4402}
4403
4404/**
4405 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4406 * @ipr_cmd: ipr command struct
4407 *
4408 * Return value:
4409 * none
4410 **/
4411static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4412{
51b1c7e1
BK		 4413 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4414 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4415 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4416
4417 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4418 ioarcb->write_data_transfer_length = 0;
4419 ioarcb->read_data_transfer_length = 0;
4420 ioarcb->write_ioadl_len = 0;
4421 ioarcb->read_ioadl_len = 0;
4422 ioasa->ioasc = 0;
4423 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4424 ioarcb->write_ioadl_addr =
4425 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4426 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4427}
4428
4429/**
4430 * ipr_erp_request_sense - Send request sense to a device
4431 * @ipr_cmd: ipr command struct
4432 *
4433 * This function sends a request sense to a device as a result
4434 * of a check condition.
4435 *
4436 * Return value:
4437 * nothing
4438 **/
4439static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4440{
4441 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4442 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4443
4444 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4445 ipr_erp_done(ipr_cmd);
4446 return;
4447 }
4448
4449 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4450
4451 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4452 cmd_pkt->cdb[0] = REQUEST_SENSE;
4453 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4454 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4455 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4456 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4457
4458 ipr_cmd->ioadl[0].flags_and_data_len =
4459 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4460 ipr_cmd->ioadl[0].address =
4461 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4462
4463 ipr_cmd->ioarcb.read_ioadl_len =
4464 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4465 ipr_cmd->ioarcb.read_data_transfer_length =
4466 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4467
4468 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4469 IPR_REQUEST_SENSE_TIMEOUT * 2);
4470}
4471
4472/**
4473 * ipr_erp_cancel_all - Send cancel all to a device
4474 * @ipr_cmd: ipr command struct
4475 *
4476 * This function sends a cancel all to a device to clear the
4477 * queue. If we are running TCQ on the device, QERR is set to 1,
4478 * which means all outstanding ops have been dropped on the floor.
4479 * Cancel all will return them to us.
4480 *
4481 * Return value:
4482 * nothing
4483 **/
4484static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4485{
4486 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4487 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4488 struct ipr_cmd_pkt *cmd_pkt;
4489
4490 res->in_erp = 1;
4491
4492 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4493
4494 if (!scsi_get_tag_type(scsi_cmd->device)) {
4495 ipr_erp_request_sense(ipr_cmd);
4496 return;
4497 }
4498
4499 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4500 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4501 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4502
4503 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4504 IPR_CANCEL_ALL_TIMEOUT);
4505}
4506
4507/**
4508 * ipr_dump_ioasa - Dump contents of IOASA
4509 * @ioa_cfg: ioa config struct
4510 * @ipr_cmd: ipr command struct
fe964d0a 4511 * @res: resource entry struct
1da177e4
LT		 4512 *
4513 * This function is invoked by the interrupt handler when ops
4514 * fail. It will log the IOASA if appropriate. Only called
4515 * for GPDD ops.
4516 *
4517 * Return value:
4518 * none
4519 **/
4520static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4521 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4522{
4523 int i;
4524 u16 data_len;
b0692dd4 4525 u32 ioasc, fd_ioasc;
1da177e4
LT		 4526 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4527 __be32 *ioasa_data = (__be32 *)ioasa;
4528 int error_index;
4529
4530 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4531 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4532
4533 if (0 == ioasc)
4534 return;
4535
4536 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4537 return;
4538
b0692dd4
BK		 4539 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4540 error_index = ipr_get_error(fd_ioasc);
4541 else
4542 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4543
4544 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4545 /* Don't log an error if the IOA already logged one */
4546 if (ioasa->ilid != 0)
4547 return;
4548
cc9bd5d4
BK		 4549 if (!ipr_is_gscsi(res))
4550 return;
4551
1da177e4
LT		 4552 if (ipr_error_table[error_index].log_ioasa == 0)
4553 return;
4554 }
4555
fe964d0a 4556 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4557
4558 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4559 data_len = sizeof(struct ipr_ioasa);
4560 else
4561 data_len = be16_to_cpu(ioasa->ret_stat_len);
4562
4563 ipr_err("IOASA Dump:\n");
4564
4565 for (i = 0; i < data_len / 4; i += 4) {
4566 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4567 be32_to_cpu(ioasa_data[i]),
4568 be32_to_cpu(ioasa_data[i+1]),
4569 be32_to_cpu(ioasa_data[i+2]),
4570 be32_to_cpu(ioasa_data[i+3]));
4571 }
4572}
4573
4574/**
4575 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4576 * @ioasa: IOASA
4577 * @sense_buf: sense data buffer
4578 *
4579 * Return value:
4580 * none
4581 **/
4582static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4583{
4584 u32 failing_lba;
4585 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4586 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4587 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4588 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4589
4590 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4591
4592 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4593 return;
4594
4595 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4596
4597 if (ipr_is_vset_device(res) &&
4598 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4599 ioasa->u.vset.failing_lba_hi != 0) {
4600 sense_buf[0] = 0x72;
4601 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4602 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4603 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4604
4605 sense_buf[7] = 12;
4606 sense_buf[8] = 0;
4607 sense_buf[9] = 0x0A;
4608 sense_buf[10] = 0x80;
4609
4610 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4611
4612 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4613 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4614 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4615 sense_buf[15] = failing_lba & 0x000000ff;
4616
4617 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4618
4619 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4620 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4621 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4622 sense_buf[19] = failing_lba & 0x000000ff;
4623 } else {
4624 sense_buf[0] = 0x70;
4625 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4626 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4627 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4628
4629 /* Illegal request */
4630 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4631 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4632 sense_buf[7] = 10; /* additional length */
4633
4634 /* IOARCB was in error */
4635 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4636 sense_buf[15] = 0xC0;
4637 else /* Parameter data was invalid */
4638 sense_buf[15] = 0x80;
4639
4640 sense_buf[16] =
4641 ((IPR_FIELD_POINTER_MASK &
4642 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4643 sense_buf[17] =
4644 (IPR_FIELD_POINTER_MASK &
4645 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4646 } else {
4647 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4648 if (ipr_is_vset_device(res))
4649 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4650 else
4651 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4652
4653 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4654 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4655 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4656 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4657 sense_buf[6] = failing_lba & 0x000000ff;
4658 }
4659
4660 sense_buf[7] = 6; /* additional length */
4661 }
4662 }
4663}
4664
ee0a90fa
BK		 4665/**
4666 * ipr_get_autosense - Copy autosense data to sense buffer
4667 * @ipr_cmd: ipr command struct
4668 *
4669 * This function copies the autosense buffer to the buffer
4670 * in the scsi_cmd, if there is autosense available.
4671 *
4672 * Return value:
4673 * 1 if autosense was available / 0 if not
4674 **/
4675static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4676{
4677 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4678
117d2ce1 4679 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4680 return 0;
4681
4682 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4683 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4684 SCSI_SENSE_BUFFERSIZE));
4685 return 1;
4686}
4687
1da177e4
LT		 4688/**
4689 * ipr_erp_start - Process an error response for a SCSI op
4690 * @ioa_cfg: ioa config struct
4691 * @ipr_cmd: ipr command struct
4692 *
4693 * This function determines whether or not to initiate ERP
4694 * on the affected device.
4695 *
4696 * Return value:
4697 * nothing
4698 **/
4699static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4700 struct ipr_cmnd *ipr_cmd)
4701{
4702 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4703 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4704 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4705 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4706
4707 if (!res) {
4708 ipr_scsi_eh_done(ipr_cmd);
4709 return;
4710 }
4711
8a048994 4712 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4713 ipr_gen_sense(ipr_cmd);
4714
cc9bd5d4
BK		 4715 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4716
8a048994 4717 switch (masked_ioasc) {
1da177e4 4718 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4719 if (ipr_is_naca_model(res))
4720 scsi_cmd->result |= (DID_ABORT << 16);
4721 else
4722 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4723 break;
4724 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4725 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4726 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4727 break;
4728 case IPR_IOASC_HW_SEL_TIMEOUT:
4729 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4730 if (!ipr_is_naca_model(res))
4731 res->needs_sync_complete = 1;
1da177e4
LT		 4732 break;
4733 case IPR_IOASC_SYNC_REQUIRED:
4734 if (!res->in_erp)
4735 res->needs_sync_complete = 1;
4736 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4737 break;
4738 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4739 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4740 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4741 break;
4742 case IPR_IOASC_BUS_WAS_RESET:
4743 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4744 /*
4745 * Report the bus reset and ask for a retry. The device
4746 * will give CC/UA the next command.
4747 */
4748 if (!res->resetting_device)
4749 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4750 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4751 if (!ipr_is_naca_model(res))
4752 res->needs_sync_complete = 1;
1da177e4
LT		 4753 break;
4754 case IPR_IOASC_HW_DEV_BUS_STATUS:
4755 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4756 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4757 if (!ipr_get_autosense(ipr_cmd)) {
4758 if (!ipr_is_naca_model(res)) {
4759 ipr_erp_cancel_all(ipr_cmd);
4760 return;
4761 }
4762 }
1da177e4 4763 }
ee0a90fa
BK		 4764 if (!ipr_is_naca_model(res))
4765 res->needs_sync_complete = 1;
1da177e4
LT		 4766 break;
4767 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4768 break;
4769 default:
5b7304fb
BK		 4770 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4771 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4772 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4773 res->needs_sync_complete = 1;
4774 break;
4775 }
4776
63015bc9 4777 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4778 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4779 scsi_cmd->scsi_done(scsi_cmd);
4780}
4781
4782/**
4783 * ipr_scsi_done - mid-layer done function
4784 * @ipr_cmd: ipr command struct
4785 *
4786 * This function is invoked by the interrupt handler for
4787 * ops generated by the SCSI mid-layer
4788 *
4789 * Return value:
4790 * none
4791 **/
4792static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4793{
4794 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4795 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4796 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4797
63015bc9 4798 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4799
4800 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4801 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4802 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4803 scsi_cmd->scsi_done(scsi_cmd);
4804 } else
4805 ipr_erp_start(ioa_cfg, ipr_cmd);
4806}
4807
1da177e4
LT		 4808/**
4809 * ipr_queuecommand - Queue a mid-layer request
4810 * @scsi_cmd: scsi command struct
4811 * @done: done function
4812 *
4813 * This function queues a request generated by the mid-layer.
4814 *
4815 * Return value:
4816 * 0 on success
4817 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4818 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4819 **/
4820static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4821 void (*done) (struct scsi_cmnd *))
4822{
4823 struct ipr_ioa_cfg *ioa_cfg;
4824 struct ipr_resource_entry *res;
4825 struct ipr_ioarcb *ioarcb;
4826 struct ipr_cmnd *ipr_cmd;
4827 int rc = 0;
4828
4829 scsi_cmd->scsi_done = done;
4830 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4831 res = scsi_cmd->device->hostdata;
4832 scsi_cmd->result = (DID_OK << 16);
4833
4834 /*
4835 * We are currently blocking all devices due to a host reset
4836 * We have told the host to stop giving us new requests, but
4837 * ERP ops don't count. FIXME
4838 */
4839 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4840 return SCSI_MLQUEUE_HOST_BUSY;
4841
4842 /*
4843 * FIXME - Create scsi_set_host_offline interface
4844 * and the ioa_is_dead check can be removed
4845 */
4846 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4847 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4848 scsi_cmd->result = (DID_NO_CONNECT << 16);
4849 scsi_cmd->scsi_done(scsi_cmd);
4850 return 0;
4851 }
4852
35a39691
BK		 4853 if (ipr_is_gata(res) && res->sata_port)
4854 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4855
1da177e4
LT		 4856 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4857 ioarcb = &ipr_cmd->ioarcb;
4858 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4859
4860 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4861 ipr_cmd->scsi_cmd = scsi_cmd;
4862 ioarcb->res_handle = res->cfgte.res_handle;
4863 ipr_cmd->done = ipr_scsi_done;
4864 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4865
4866 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4867 if (scsi_cmd->underflow == 0)
4868 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4869
4870 if (res->needs_sync_complete) {
4871 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4872 res->needs_sync_complete = 0;
4873 }
4874
4875 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4876 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4877 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4878 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4879 }
4880
4881 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4882 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4883 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4884
1da177e4
LT		 4885 if (likely(rc == 0))
4886 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4887
4888 if (likely(rc == 0)) {
4889 mb();
4890 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4891 ioa_cfg->regs.ioarrin_reg);
4892 } else {
4893 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4894 return SCSI_MLQUEUE_HOST_BUSY;
4895 }
4896
4897 return 0;
4898}
4899
35a39691
BK		 4900/**
4901 * ipr_ioctl - IOCTL handler
4902 * @sdev: scsi device struct
4903 * @cmd: IOCTL cmd
4904 * @arg: IOCTL arg
4905 *
4906 * Return value:
4907 * 0 on success / other on failure
4908 **/
bd705f2d 4909static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4910{
4911 struct ipr_resource_entry *res;
4912
4913 res = (struct ipr_resource_entry *)sdev->hostdata;
0ce3a7e5
BK		 4914 if (res && ipr_is_gata(res)) {
4915 if (cmd == HDIO_GET_IDENTITY)
4916 return -ENOTTY;
94be9a58 4917 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
0ce3a7e5 4918 }
35a39691
BK		 4919
4920 return -EINVAL;
4921}
4922
1da177e4
LT		 4923/**
4924 * ipr_info - Get information about the card/driver
4925 * @scsi_host: scsi host struct
4926 *
4927 * Return value:
4928 * pointer to buffer with description string
4929 **/
4930static const char * ipr_ioa_info(struct Scsi_Host *host)
4931{
4932 static char buffer[512];
4933 struct ipr_ioa_cfg *ioa_cfg;
4934 unsigned long lock_flags = 0;
4935
4936 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4937
4938 spin_lock_irqsave(host->host_lock, lock_flags);
4939 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4940 spin_unlock_irqrestore(host->host_lock, lock_flags);
4941
4942 return buffer;
4943}
4944
4945static struct scsi_host_template driver_template = {
4946 .module = THIS_MODULE,
4947 .name = "IPR",
4948 .info = ipr_ioa_info,
35a39691 4949 .ioctl = ipr_ioctl,
1da177e4
LT		 4950 .queuecommand = ipr_queuecommand,
4951 .eh_abort_handler = ipr_eh_abort,
4952 .eh_device_reset_handler = ipr_eh_dev_reset,
4953 .eh_host_reset_handler = ipr_eh_host_reset,
4954 .slave_alloc = ipr_slave_alloc,
4955 .slave_configure = ipr_slave_configure,
4956 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4957 .target_alloc = ipr_target_alloc,
4958 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4959 .change_queue_depth = ipr_change_queue_depth,
4960 .change_queue_type = ipr_change_queue_type,
4961 .bios_param = ipr_biosparam,
4962 .can_queue = IPR_MAX_COMMANDS,
4963 .this_id = -1,
4964 .sg_tablesize = IPR_MAX_SGLIST,
4965 .max_sectors = IPR_IOA_MAX_SECTORS,
4966 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4967 .use_clustering = ENABLE_CLUSTERING,
4968 .shost_attrs = ipr_ioa_attrs,
4969 .sdev_attrs = ipr_dev_attrs,
4970 .proc_name = IPR_NAME
4971};
4972
35a39691
BK		 4973/**
4974 * ipr_ata_phy_reset - libata phy_reset handler
4975 * @ap: ata port to reset
4976 *
4977 **/
4978static void ipr_ata_phy_reset(struct ata_port *ap)
4979{
4980 unsigned long flags;
4981 struct ipr_sata_port *sata_port = ap->private_data;
4982 struct ipr_resource_entry *res = sata_port->res;
4983 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4984 int rc;
4985
4986 ENTER;
4987 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4988 while(ioa_cfg->in_reset_reload) {
4989 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4990 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4991 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4992 }
4993
4994 if (!ioa_cfg->allow_cmds)
4995 goto out_unlock;
4996
4997 rc = ipr_device_reset(ioa_cfg, res);
4998
4999 if (rc) {
ac8869d5 5000 ata_port_disable(ap);
35a39691
BK		 5001 goto out_unlock;
5002 }
5003
5004 switch(res->cfgte.proto) {
5005 case IPR_PROTO_SATA:
5006 case IPR_PROTO_SAS_STP:
9af5c9c9 5007 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 5008 break;
5009 case IPR_PROTO_SATA_ATAPI:
5010 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 5011 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 5012 break;
5013 default:
9af5c9c9 5014 ap->link.device[0].class = ATA_DEV_UNKNOWN;
ac8869d5 5015 ata_port_disable(ap);
35a39691
BK		 5016 break;
5017 };
5018
5019out_unlock:
5020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5021 LEAVE;
5022}
5023
5024/**
5025 * ipr_ata_post_internal - Cleanup after an internal command
5026 * @qc: ATA queued command
5027 *
5028 * Return value:
5029 * none
5030 **/
5031static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5032{
5033 struct ipr_sata_port *sata_port = qc->ap->private_data;
5034 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5035 struct ipr_cmnd *ipr_cmd;
5036 unsigned long flags;
5037
5038 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5039 while(ioa_cfg->in_reset_reload) {
5040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5041 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5042 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5043 }
5044
35a39691
BK		 5045 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5046 if (ipr_cmd->qc == qc) {
5047 ipr_device_reset(ioa_cfg, sata_port->res);
5048 break;
5049 }
5050 }
5051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5052}
5053
35a39691
BK		 5054/**
5055 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5056 * @regs: destination
5057 * @tf: source ATA taskfile
5058 *
5059 * Return value:
5060 * none
5061 **/
5062static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5063 struct ata_taskfile *tf)
5064{
5065 regs->feature = tf->feature;
5066 regs->nsect = tf->nsect;
5067 regs->lbal = tf->lbal;
5068 regs->lbam = tf->lbam;
5069 regs->lbah = tf->lbah;
5070 regs->device = tf->device;
5071 regs->command = tf->command;
5072 regs->hob_feature = tf->hob_feature;
5073 regs->hob_nsect = tf->hob_nsect;
5074 regs->hob_lbal = tf->hob_lbal;
5075 regs->hob_lbam = tf->hob_lbam;
5076 regs->hob_lbah = tf->hob_lbah;
5077 regs->ctl = tf->ctl;
5078}
5079
5080/**
5081 * ipr_sata_done - done function for SATA commands
5082 * @ipr_cmd: ipr command struct
5083 *
5084 * This function is invoked by the interrupt handler for
5085 * ops generated by the SCSI mid-layer to SATA devices
5086 *
5087 * Return value:
5088 * none
5089 **/
5090static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5091{
5092 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5093 struct ata_queued_cmd *qc = ipr_cmd->qc;
5094 struct ipr_sata_port *sata_port = qc->ap->private_data;
5095 struct ipr_resource_entry *res = sata_port->res;
5096 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5097
5098 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5099 sizeof(struct ipr_ioasa_gata));
5100 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5101
5102 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5103 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5104 res->cfgte.res_addr.target);
5105
5106 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5107 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5108 else
5109 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5110 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5111 ata_qc_complete(qc);
5112}
5113
5114/**
5115 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5116 * @ipr_cmd: ipr command struct
5117 * @qc: ATA queued command
5118 *
5119 **/
5120static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5121 struct ata_queued_cmd *qc)
5122{
5123 u32 ioadl_flags = 0;
5124 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5125 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3be6cbd7 5126 struct ipr_ioadl_desc *last_ioadl = NULL;
dde20207 5127 int len = qc->nbytes;
35a39691 5128 struct scatterlist *sg;
ff2aeb1e 5129 unsigned int si;
35a39691
BK		 5130
5131 if (len == 0)
5132 return;
5133
5134 if (qc->dma_dir == DMA_TO_DEVICE) {
5135 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5136 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5137 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5138 ioarcb->write_ioadl_len =
5139 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5140 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5141 ioadl_flags = IPR_IOADL_FLAGS_READ;
5142 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5143 ioarcb->read_ioadl_len =
5144 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5145 }
5146
ff2aeb1e 5147 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 5148 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5149 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 5150
5151 last_ioadl = ioadl;
5152 ioadl++;
35a39691 5153 }
3be6cbd7
JG		 5154
5155 if (likely(last_ioadl))
5156 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 5157}
5158
5159/**
5160 * ipr_qc_issue - Issue a SATA qc to a device
5161 * @qc: queued command
5162 *
5163 * Return value:
5164 * 0 if success
5165 **/
5166static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5167{
5168 struct ata_port *ap = qc->ap;
5169 struct ipr_sata_port *sata_port = ap->private_data;
5170 struct ipr_resource_entry *res = sata_port->res;
5171 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5172 struct ipr_cmnd *ipr_cmd;
5173 struct ipr_ioarcb *ioarcb;
5174 struct ipr_ioarcb_ata_regs *regs;
5175
5176 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5177 return AC_ERR_SYSTEM;
35a39691
BK		 5178
5179 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5180 ioarcb = &ipr_cmd->ioarcb;
5181 regs = &ioarcb->add_data.u.regs;
5182
5183 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5184 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5185
5186 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5187 ipr_cmd->qc = qc;
5188 ipr_cmd->done = ipr_sata_done;
5189 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5190 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5191 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5192 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
dde20207 5193 ipr_cmd->dma_use_sg = qc->n_elem;
35a39691
BK		 5194
5195 ipr_build_ata_ioadl(ipr_cmd, qc);
5196 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5197 ipr_copy_sata_tf(regs, &qc->tf);
5198 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5199 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5200
5201 switch (qc->tf.protocol) {
5202 case ATA_PROT_NODATA:
5203 case ATA_PROT_PIO:
5204 break;
5205
5206 case ATA_PROT_DMA:
5207 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5208 break;
5209
0dc36888
TH		 5210 case ATAPI_PROT_PIO:
5211 case ATAPI_PROT_NODATA:
35a39691
BK		 5212 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5213 break;
5214
0dc36888 5215 case ATAPI_PROT_DMA:
35a39691
BK		 5216 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5217 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5218 break;
5219
5220 default:
5221 WARN_ON(1);
0feeed82 5222 return AC_ERR_INVALID;
35a39691
BK		 5223 }
5224
5225 mb();
5226 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5227 ioa_cfg->regs.ioarrin_reg);
5228 return 0;
5229}
5230
4c9bf4e7
TH		 5231/**
5232 * ipr_qc_fill_rtf - Read result TF
5233 * @qc: ATA queued command
5234 *
5235 * Return value:
5236 * true
5237 **/
5238static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
5239{
5240 struct ipr_sata_port *sata_port = qc->ap->private_data;
5241 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5242 struct ata_taskfile *tf = &qc->result_tf;
5243
5244 tf->feature = g->error;
5245 tf->nsect = g->nsect;
5246 tf->lbal = g->lbal;
5247 tf->lbam = g->lbam;
5248 tf->lbah = g->lbah;
5249 tf->device = g->device;
5250 tf->command = g->status;
5251 tf->hob_nsect = g->hob_nsect;
5252 tf->hob_lbal = g->hob_lbal;
5253 tf->hob_lbam = g->hob_lbam;
5254 tf->hob_lbah = g->hob_lbah;
5255 tf->ctl = g->alt_status;
5256
5257 return true;
5258}
5259
35a39691 5260static struct ata_port_operations ipr_sata_ops = {
35a39691 5261 .phy_reset = ipr_ata_phy_reset,
a1efdaba 5262 .hardreset = ipr_sata_reset,
35a39691 5263 .post_internal_cmd = ipr_ata_post_internal,
35a39691
BK		 5264 .qc_prep = ata_noop_qc_prep,
5265 .qc_issue = ipr_qc_issue,
4c9bf4e7 5266 .qc_fill_rtf = ipr_qc_fill_rtf,
35a39691
BK		 5267 .port_start = ata_sas_port_start,
5268 .port_stop = ata_sas_port_stop
5269};
5270
5271static struct ata_port_info sata_port_info = {
5272 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5273 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5274 .pio_mask = 0x10, /* pio4 */
5275 .mwdma_mask = 0x07,
5276 .udma_mask = 0x7f, /* udma0-6 */
5277 .port_ops = &ipr_sata_ops
5278};
5279
1da177e4
LT		 5280#ifdef CONFIG_PPC_PSERIES
5281static const u16 ipr_blocked_processors[] = {
5282 PV_NORTHSTAR,
5283 PV_PULSAR,
5284 PV_POWER4,
5285 PV_ICESTAR,
5286 PV_SSTAR,
5287 PV_POWER4p,
5288 PV_630,
5289 PV_630p
5290};
5291
5292/**
5293 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5294 * @ioa_cfg: ioa cfg struct
5295 *
5296 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5297 * certain pSeries hardware. This function determines if the given
5298 * adapter is in one of these confgurations or not.
5299 *
5300 * Return value:
5301 * 1 if adapter is not supported / 0 if adapter is supported
5302 **/
5303static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5304{
1da177e4
LT		 5305 int i;
5306
44c10138
AK		 5307 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5308 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5309 if (__is_processor(ipr_blocked_processors[i]))
5310 return 1;
1da177e4
LT		 5311 }
5312 }
5313 return 0;
5314}
5315#else
5316#define ipr_invalid_adapter(ioa_cfg) 0
5317#endif
5318
5319/**
5320 * ipr_ioa_bringdown_done - IOA bring down completion.
5321 * @ipr_cmd: ipr command struct
5322 *
5323 * This function processes the completion of an adapter bring down.
5324 * It wakes any reset sleepers.
5325 *
5326 * Return value:
5327 * IPR_RC_JOB_RETURN
5328 **/
5329static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5330{
5331 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5332
5333 ENTER;
5334 ioa_cfg->in_reset_reload = 0;
5335 ioa_cfg->reset_retries = 0;
5336 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5337 wake_up_all(&ioa_cfg->reset_wait_q);
5338
5339 spin_unlock_irq(ioa_cfg->host->host_lock);
5340 scsi_unblock_requests(ioa_cfg->host);
5341 spin_lock_irq(ioa_cfg->host->host_lock);
5342 LEAVE;
5343
5344 return IPR_RC_JOB_RETURN;
5345}
5346
5347/**
5348 * ipr_ioa_reset_done - IOA reset completion.
5349 * @ipr_cmd: ipr command struct
5350 *
5351 * This function processes the completion of an adapter reset.
5352 * It schedules any necessary mid-layer add/removes and
5353 * wakes any reset sleepers.
5354 *
5355 * Return value:
5356 * IPR_RC_JOB_RETURN
5357 **/
5358static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5359{
5360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5361 struct ipr_resource_entry *res;
5362 struct ipr_hostrcb *hostrcb, *temp;
5363 int i = 0;
5364
5365 ENTER;
5366 ioa_cfg->in_reset_reload = 0;
5367 ioa_cfg->allow_cmds = 1;
5368 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5369 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5370
5371 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5372 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5373 ipr_trace;
5374 break;
5375 }
5376 }
5377 schedule_work(&ioa_cfg->work_q);
5378
5379 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5380 list_del(&hostrcb->queue);
5381 if (i++ < IPR_NUM_LOG_HCAMS)
5382 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5383 else
5384 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5385 }
5386
6bb04170 5387 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5388 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5389
5390 ioa_cfg->reset_retries = 0;
5391 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5392 wake_up_all(&ioa_cfg->reset_wait_q);
5393
30237853 5394 spin_unlock(ioa_cfg->host->host_lock);
1da177e4 5395 scsi_unblock_requests(ioa_cfg->host);
30237853 5396 spin_lock(ioa_cfg->host->host_lock);
1da177e4
LT		 5397
5398 if (!ioa_cfg->allow_cmds)
5399 scsi_block_requests(ioa_cfg->host);
5400
5401 LEAVE;
5402 return IPR_RC_JOB_RETURN;
5403}
5404
5405/**
5406 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5407 * @supported_dev: supported device struct
5408 * @vpids: vendor product id struct
5409 *
5410 * Return value:
5411 * none
5412 **/
5413static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5414 struct ipr_std_inq_vpids *vpids)
5415{
5416 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5417 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5418 supported_dev->num_records = 1;
5419 supported_dev->data_length =
5420 cpu_to_be16(sizeof(struct ipr_supported_device));
5421 supported_dev->reserved = 0;
5422}
5423
5424/**
5425 * ipr_set_supported_devs - Send Set Supported Devices for a device
5426 * @ipr_cmd: ipr command struct
5427 *
5428 * This function send a Set Supported Devices to the adapter
5429 *
5430 * Return value:
5431 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5432 **/
5433static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5434{
5435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5436 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5437 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5438 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5439 struct ipr_resource_entry *res = ipr_cmd->u.res;
5440
5441 ipr_cmd->job_step = ipr_ioa_reset_done;
5442
5443 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5444 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5445 continue;
5446
5447 ipr_cmd->u.res = res;
5448 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5449
5450 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5451 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5452 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5453
5454 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5455 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5456 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5457
5458 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5459 sizeof(struct ipr_supported_device));
5460 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5461 offsetof(struct ipr_misc_cbs, supp_dev));
5462 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5463 ioarcb->write_data_transfer_length =
5464 cpu_to_be32(sizeof(struct ipr_supported_device));
5465
5466 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5467 IPR_SET_SUP_DEVICE_TIMEOUT);
5468
5469 ipr_cmd->job_step = ipr_set_supported_devs;
5470 return IPR_RC_JOB_RETURN;
5471 }
5472
5473 return IPR_RC_JOB_CONTINUE;
5474}
5475
62275040
BK		 5476/**
5477 * ipr_setup_write_cache - Disable write cache if needed
5478 * @ipr_cmd: ipr command struct
5479 *
5480 * This function sets up adapters write cache to desired setting
5481 *
5482 * Return value:
5483 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5484 **/
5485static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5486{
5487 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5488
5489 ipr_cmd->job_step = ipr_set_supported_devs;
5490 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5491 struct ipr_resource_entry, queue);
5492
5493 if (ioa_cfg->cache_state != CACHE_DISABLED)
5494 return IPR_RC_JOB_CONTINUE;
5495
5496 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5497 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5498 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5499 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5500
5501 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5502
5503 return IPR_RC_JOB_RETURN;
5504}
5505
1da177e4
LT		 5506/**
5507 * ipr_get_mode_page - Locate specified mode page
5508 * @mode_pages: mode page buffer
5509 * @page_code: page code to find
5510 * @len: minimum required length for mode page
5511 *
5512 * Return value:
5513 * pointer to mode page / NULL on failure
5514 **/
5515static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5516 u32 page_code, u32 len)
5517{
5518 struct ipr_mode_page_hdr *mode_hdr;
5519 u32 page_length;
5520 u32 length;
5521
5522 if (!mode_pages || (mode_pages->hdr.length == 0))
5523 return NULL;
5524
5525 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5526 mode_hdr = (struct ipr_mode_page_hdr *)
5527 (mode_pages->data + mode_pages->hdr.block_desc_len);
5528
5529 while (length) {
5530 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5531 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5532 return mode_hdr;
5533 break;
5534 } else {
5535 page_length = (sizeof(struct ipr_mode_page_hdr) +
5536 mode_hdr->page_length);
5537 length -= page_length;
5538 mode_hdr = (struct ipr_mode_page_hdr *)
5539 ((unsigned long)mode_hdr + page_length);
5540 }
5541 }
5542 return NULL;
5543}
5544
5545/**
5546 * ipr_check_term_power - Check for term power errors
5547 * @ioa_cfg: ioa config struct
5548 * @mode_pages: IOAFP mode pages buffer
5549 *
5550 * Check the IOAFP's mode page 28 for term power errors
5551 *
5552 * Return value:
5553 * nothing
5554 **/
5555static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5556 struct ipr_mode_pages *mode_pages)
5557{
5558 int i;
5559 int entry_length;
5560 struct ipr_dev_bus_entry *bus;
5561 struct ipr_mode_page28 *mode_page;
5562
5563 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5564 sizeof(struct ipr_mode_page28));
5565
5566 entry_length = mode_page->entry_length;
5567
5568 bus = mode_page->bus;
5569
5570 for (i = 0; i < mode_page->num_entries; i++) {
5571 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5572 dev_err(&ioa_cfg->pdev->dev,
5573 "Term power is absent on scsi bus %d\n",
5574 bus->res_addr.bus);
5575 }
5576
5577 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5578 }
5579}
5580
5581/**
5582 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5583 * @ioa_cfg: ioa config struct
5584 *
5585 * Looks through the config table checking for SES devices. If
5586 * the SES device is in the SES table indicating a maximum SCSI
5587 * bus speed, the speed is limited for the bus.
5588 *
5589 * Return value:
5590 * none
5591 **/
5592static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5593{
5594 u32 max_xfer_rate;
5595 int i;
5596
5597 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5598 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5599 ioa_cfg->bus_attr[i].bus_width);
5600
5601 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5602 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5603 }
5604}
5605
5606/**
5607 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5608 * @ioa_cfg: ioa config struct
5609 * @mode_pages: mode page 28 buffer
5610 *
5611 * Updates mode page 28 based on driver configuration
5612 *
5613 * Return value:
5614 * none
5615 **/
5616static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5617 struct ipr_mode_pages *mode_pages)
5618{
5619 int i, entry_length;
5620 struct ipr_dev_bus_entry *bus;
5621 struct ipr_bus_attributes *bus_attr;
5622 struct ipr_mode_page28 *mode_page;
5623
5624 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5625 sizeof(struct ipr_mode_page28));
5626
5627 entry_length = mode_page->entry_length;
5628
5629 /* Loop for each device bus entry */
5630 for (i = 0, bus = mode_page->bus;
5631 i < mode_page->num_entries;
5632 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5633 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5634 dev_err(&ioa_cfg->pdev->dev,
5635 "Invalid resource address reported: 0x%08X\n",
5636 IPR_GET_PHYS_LOC(bus->res_addr));
5637 continue;
5638 }
5639
5640 bus_attr = &ioa_cfg->bus_attr[i];
5641 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5642 bus->bus_width = bus_attr->bus_width;
5643 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5644 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5645 if (bus_attr->qas_enabled)
5646 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5647 else
5648 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5649 }
5650}
5651
5652/**
5653 * ipr_build_mode_select - Build a mode select command
5654 * @ipr_cmd: ipr command struct
5655 * @res_handle: resource handle to send command to
5656 * @parm: Byte 2 of Mode Sense command
5657 * @dma_addr: DMA buffer address
5658 * @xfer_len: data transfer length
5659 *
5660 * Return value:
5661 * none
5662 **/
5663static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5664 __be32 res_handle, u8 parm, u32 dma_addr,
5665 u8 xfer_len)
5666{
5667 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5668 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5669
5670 ioarcb->res_handle = res_handle;
5671 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5672 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5673 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5674 ioarcb->cmd_pkt.cdb[1] = parm;
5675 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5676
5677 ioadl->flags_and_data_len =
5678 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5679 ioadl->address = cpu_to_be32(dma_addr);
5680 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5681 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5682}
5683
5684/**
5685 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5686 * @ipr_cmd: ipr command struct
5687 *
5688 * This function sets up the SCSI bus attributes and sends
5689 * a Mode Select for Page 28 to activate them.
5690 *
5691 * Return value:
5692 * IPR_RC_JOB_RETURN
5693 **/
5694static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5695{
5696 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5697 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5698 int length;
5699
5700 ENTER;
4733804c
BK		 5701 ipr_scsi_bus_speed_limit(ioa_cfg);
5702 ipr_check_term_power(ioa_cfg, mode_pages);
5703 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5704 length = mode_pages->hdr.length + 1;
5705 mode_pages->hdr.length = 0;
1da177e4
LT		 5706
5707 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5708 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5709 length);
5710
62275040 5711 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5712 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5713
5714 LEAVE;
5715 return IPR_RC_JOB_RETURN;
5716}
5717
5718/**
5719 * ipr_build_mode_sense - Builds a mode sense command
5720 * @ipr_cmd: ipr command struct
5721 * @res: resource entry struct
5722 * @parm: Byte 2 of mode sense command
5723 * @dma_addr: DMA address of mode sense buffer
5724 * @xfer_len: Size of DMA buffer
5725 *
5726 * Return value:
5727 * none
5728 **/
5729static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5730 __be32 res_handle,
5731 u8 parm, u32 dma_addr, u8 xfer_len)
5732{
5733 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5734 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5735
5736 ioarcb->res_handle = res_handle;
5737 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5738 ioarcb->cmd_pkt.cdb[2] = parm;
5739 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5740 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5741
5742 ioadl->flags_and_data_len =
5743 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5744 ioadl->address = cpu_to_be32(dma_addr);
5745 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5746 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5747}
5748
dfed823e
BK		 5749/**
5750 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5751 * @ipr_cmd: ipr command struct
5752 *
5753 * This function handles the failure of an IOA bringup command.
5754 *
5755 * Return value:
5756 * IPR_RC_JOB_RETURN
5757 **/
5758static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5759{
5760 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5761 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5762
5763 dev_err(&ioa_cfg->pdev->dev,
5764 "0x%02X failed with IOASC: 0x%08X\n",
5765 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5766
5767 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5768 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5769 return IPR_RC_JOB_RETURN;
5770}
5771
5772/**
5773 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5774 * @ipr_cmd: ipr command struct
5775 *
5776 * This function handles the failure of a Mode Sense to the IOAFP.
5777 * Some adapters do not handle all mode pages.
5778 *
5779 * Return value:
5780 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5781 **/
5782static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5783{
5784 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5785
5786 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5787 ipr_cmd->job_step = ipr_setup_write_cache;
5788 return IPR_RC_JOB_CONTINUE;
5789 }
5790
5791 return ipr_reset_cmd_failed(ipr_cmd);
5792}
5793
1da177e4
LT		 5794/**
5795 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5796 * @ipr_cmd: ipr command struct
5797 *
5798 * This function send a Page 28 mode sense to the IOA to
5799 * retrieve SCSI bus attributes.
5800 *
5801 * Return value:
5802 * IPR_RC_JOB_RETURN
5803 **/
5804static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5805{
5806 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5807
5808 ENTER;
5809 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5810 0x28, ioa_cfg->vpd_cbs_dma +
5811 offsetof(struct ipr_misc_cbs, mode_pages),
5812 sizeof(struct ipr_mode_pages));
5813
5814 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5815 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5816
5817 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5818
5819 LEAVE;
5820 return IPR_RC_JOB_RETURN;
5821}
5822
ac09c349
BK		 5823/**
5824 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5825 * @ipr_cmd: ipr command struct
5826 *
5827 * This function enables dual IOA RAID support if possible.
5828 *
5829 * Return value:
5830 * IPR_RC_JOB_RETURN
5831 **/
5832static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5833{
5834 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5835 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5836 struct ipr_mode_page24 *mode_page;
5837 int length;
5838
5839 ENTER;
5840 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5841 sizeof(struct ipr_mode_page24));
5842
5843 if (mode_page)
5844 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5845
5846 length = mode_pages->hdr.length + 1;
5847 mode_pages->hdr.length = 0;
5848
5849 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5850 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5851 length);
5852
5853 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5854 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5855
5856 LEAVE;
5857 return IPR_RC_JOB_RETURN;
5858}
5859
5860/**
5861 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5862 * @ipr_cmd: ipr command struct
5863 *
5864 * This function handles the failure of a Mode Sense to the IOAFP.
5865 * Some adapters do not handle all mode pages.
5866 *
5867 * Return value:
5868 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5869 **/
5870static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5871{
5872 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5873
5874 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5875 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5876 return IPR_RC_JOB_CONTINUE;
5877 }
5878
5879 return ipr_reset_cmd_failed(ipr_cmd);
5880}
5881
5882/**
5883 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5884 * @ipr_cmd: ipr command struct
5885 *
5886 * This function send a mode sense to the IOA to retrieve
5887 * the IOA Advanced Function Control mode page.
5888 *
5889 * Return value:
5890 * IPR_RC_JOB_RETURN
5891 **/
5892static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5893{
5894 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5895
5896 ENTER;
5897 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5898 0x24, ioa_cfg->vpd_cbs_dma +
5899 offsetof(struct ipr_misc_cbs, mode_pages),
5900 sizeof(struct ipr_mode_pages));
5901
5902 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5903 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5904
5905 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5906
5907 LEAVE;
5908 return IPR_RC_JOB_RETURN;
5909}
5910
1da177e4
LT		 5911/**
5912 * ipr_init_res_table - Initialize the resource table
5913 * @ipr_cmd: ipr command struct
5914 *
5915 * This function looks through the existing resource table, comparing
5916 * it with the config table. This function will take care of old/new
5917 * devices and schedule adding/removing them from the mid-layer
5918 * as appropriate.
5919 *
5920 * Return value:
5921 * IPR_RC_JOB_CONTINUE
5922 **/
5923static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5924{
5925 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5926 struct ipr_resource_entry *res, *temp;
5927 struct ipr_config_table_entry *cfgte;
5928 int found, i;
5929 LIST_HEAD(old_res);
5930
5931 ENTER;
5932 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5933 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5934
5935 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5936 list_move_tail(&res->queue, &old_res);
5937
5938 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5939 cfgte = &ioa_cfg->cfg_table->dev[i];
5940 found = 0;
5941
5942 list_for_each_entry_safe(res, temp, &old_res, queue) {
5943 if (!memcmp(&res->cfgte.res_addr,
5944 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5945 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5946 found = 1;
5947 break;
5948 }
5949 }
5950
5951 if (!found) {
5952 if (list_empty(&ioa_cfg->free_res_q)) {
5953 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5954 break;
5955 }
5956
5957 found = 1;
5958 res = list_entry(ioa_cfg->free_res_q.next,
5959 struct ipr_resource_entry, queue);
5960 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5961 ipr_init_res_entry(res);
5962 res->add_to_ml = 1;
5963 }
5964
5965 if (found)
5966 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5967 }
5968
5969 list_for_each_entry_safe(res, temp, &old_res, queue) {
5970 if (res->sdev) {
5971 res->del_from_ml = 1;
1121b794 5972 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5973 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5974 } else {
5975 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5976 }
5977 }
5978
ac09c349
BK		 5979 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5980 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5981 else
5982 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5983
5984 LEAVE;
5985 return IPR_RC_JOB_CONTINUE;
5986}
5987
5988/**
5989 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5990 * @ipr_cmd: ipr command struct
5991 *
5992 * This function sends a Query IOA Configuration command
5993 * to the adapter to retrieve the IOA configuration table.
5994 *
5995 * Return value:
5996 * IPR_RC_JOB_RETURN
5997 **/
5998static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5999{
6000 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6001 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6002 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6003 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6004 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6005
6006 ENTER;
ac09c349
BK		 6007 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6008 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6009 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6010 ucode_vpd->major_release, ucode_vpd->card_type,
6011 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6012 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6013 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6014
6015 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6016 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6017 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6018
6019 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6020 ioarcb->read_data_transfer_length =
6021 cpu_to_be32(sizeof(struct ipr_config_table));
6022
6023 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6024 ioadl->flags_and_data_len =
6025 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6026
6027 ipr_cmd->job_step = ipr_init_res_table;
6028
6029 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6030
6031 LEAVE;
6032 return IPR_RC_JOB_RETURN;
6033}
6034
6035/**
6036 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6037 * @ipr_cmd: ipr command struct
6038 *
6039 * This utility function sends an inquiry to the adapter.
6040 *
6041 * Return value:
6042 * none
6043 **/
6044static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6045 u32 dma_addr, u8 xfer_len)
6046{
6047 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6048 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6049
6050 ENTER;
6051 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6052 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6053
6054 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6055 ioarcb->cmd_pkt.cdb[1] = flags;
6056 ioarcb->cmd_pkt.cdb[2] = page;
6057 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6058
6059 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6060 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6061
6062 ioadl->address = cpu_to_be32(dma_addr);
6063 ioadl->flags_and_data_len =
6064 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6065
6066 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6067 LEAVE;
6068}
6069
62275040
BK		 6070/**
6071 * ipr_inquiry_page_supported - Is the given inquiry page supported
6072 * @page0: inquiry page 0 buffer
6073 * @page: page code.
6074 *
6075 * This function determines if the specified inquiry page is supported.
6076 *
6077 * Return value:
6078 * 1 if page is supported / 0 if not
6079 **/
6080static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6081{
6082 int i;
6083
6084 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6085 if (page0->page[i] == page)
6086 return 1;
6087
6088 return 0;
6089}
6090
ac09c349
BK		 6091/**
6092 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6093 * @ipr_cmd: ipr command struct
6094 *
6095 * This function sends a Page 0xD0 inquiry to the adapter
6096 * to retrieve adapter capabilities.
6097 *
6098 * Return value:
6099 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6100 **/
6101static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6102{
6103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6104 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6105 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6106
6107 ENTER;
6108 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6109 memset(cap, 0, sizeof(*cap));
6110
6111 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6112 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6113 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6114 sizeof(struct ipr_inquiry_cap));
6115 return IPR_RC_JOB_RETURN;
6116 }
6117
6118 LEAVE;
6119 return IPR_RC_JOB_CONTINUE;
6120}
6121
1da177e4
LT		 6122/**
6123 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6124 * @ipr_cmd: ipr command struct
6125 *
6126 * This function sends a Page 3 inquiry to the adapter
6127 * to retrieve software VPD information.
6128 *
6129 * Return value:
6130 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6131 **/
6132static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6133{
6134 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6135 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6136
6137 ENTER;
6138
6139 if (!ipr_inquiry_page_supported(page0, 1))
6140 ioa_cfg->cache_state = CACHE_NONE;
6141
ac09c349 6142 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6143
6144 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6145 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6146 sizeof(struct ipr_inquiry_page3));
6147
6148 LEAVE;
6149 return IPR_RC_JOB_RETURN;
6150}
6151
6152/**
6153 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6154 * @ipr_cmd: ipr command struct
6155 *
6156 * This function sends a Page 0 inquiry to the adapter
6157 * to retrieve supported inquiry pages.
6158 *
6159 * Return value:
6160 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6161 **/
6162static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6163{
6164 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6165 char type[5];
6166
6167 ENTER;
6168
6169 /* Grab the type out of the VPD and store it away */
6170 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6171 type[4] = '\0';
6172 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6173
62275040 6174 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6175
62275040
BK		 6176 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6177 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6178 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6179
6180 LEAVE;
6181 return IPR_RC_JOB_RETURN;
6182}
6183
6184/**
6185 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6186 * @ipr_cmd: ipr command struct
6187 *
6188 * This function sends a standard inquiry to the adapter.
6189 *
6190 * Return value:
6191 * IPR_RC_JOB_RETURN
6192 **/
6193static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6194{
6195 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6196
6197 ENTER;
62275040 6198 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6199
6200 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6201 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6202 sizeof(struct ipr_ioa_vpd));
6203
6204 LEAVE;
6205 return IPR_RC_JOB_RETURN;
6206}
6207
6208/**
6209 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6210 * @ipr_cmd: ipr command struct
6211 *
6212 * This function send an Identify Host Request Response Queue
6213 * command to establish the HRRQ with the adapter.
6214 *
6215 * Return value:
6216 * IPR_RC_JOB_RETURN
6217 **/
6218static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6219{
6220 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6221 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6222
6223 ENTER;
6224 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6225
6226 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6227 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6228
6229 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6230 ioarcb->cmd_pkt.cdb[2] =
6231 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6232 ioarcb->cmd_pkt.cdb[3] =
6233 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6234 ioarcb->cmd_pkt.cdb[4] =
6235 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6236 ioarcb->cmd_pkt.cdb[5] =
6237 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6238 ioarcb->cmd_pkt.cdb[7] =
6239 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6240 ioarcb->cmd_pkt.cdb[8] =
6241 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6242
6243 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6244
6245 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6246
6247 LEAVE;
6248 return IPR_RC_JOB_RETURN;
6249}
6250
6251/**
6252 * ipr_reset_timer_done - Adapter reset timer function
6253 * @ipr_cmd: ipr command struct
6254 *
6255 * Description: This function is used in adapter reset processing
6256 * for timing events. If the reset_cmd pointer in the IOA
6257 * config struct is not this adapter's we are doing nested
6258 * resets and fail_all_ops will take care of freeing the
6259 * command block.
6260 *
6261 * Return value:
6262 * none
6263 **/
6264static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6265{
6266 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6267 unsigned long lock_flags = 0;
6268
6269 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6270
6271 if (ioa_cfg->reset_cmd == ipr_cmd) {
6272 list_del(&ipr_cmd->queue);
6273 ipr_cmd->done(ipr_cmd);
6274 }
6275
6276 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6277}
6278
6279/**
6280 * ipr_reset_start_timer - Start a timer for adapter reset job
6281 * @ipr_cmd: ipr command struct
6282 * @timeout: timeout value
6283 *
6284 * Description: This function is used in adapter reset processing
6285 * for timing events. If the reset_cmd pointer in the IOA
6286 * config struct is not this adapter's we are doing nested
6287 * resets and fail_all_ops will take care of freeing the
6288 * command block.
6289 *
6290 * Return value:
6291 * none
6292 **/
6293static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6294 unsigned long timeout)
6295{
6296 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6297 ipr_cmd->done = ipr_reset_ioa_job;
6298
6299 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6300 ipr_cmd->timer.expires = jiffies + timeout;
6301 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6302 add_timer(&ipr_cmd->timer);
6303}
6304
6305/**
6306 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6307 * @ioa_cfg: ioa cfg struct
6308 *
6309 * Return value:
6310 * nothing
6311 **/
6312static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6313{
6314 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6315
6316 /* Initialize Host RRQ pointers */
6317 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6318 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6319 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6320 ioa_cfg->toggle_bit = 1;
6321
6322 /* Zero out config table */
6323 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6324}
6325
6326/**
6327 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6328 * @ipr_cmd: ipr command struct
6329 *
6330 * This function reinitializes some control blocks and
6331 * enables destructive diagnostics on the adapter.
6332 *
6333 * Return value:
6334 * IPR_RC_JOB_RETURN
6335 **/
6336static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6337{
6338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6339 volatile u32 int_reg;
6340
6341 ENTER;
6342 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6343 ipr_init_ioa_mem(ioa_cfg);
6344
6345 ioa_cfg->allow_interrupts = 1;
6346 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6347
6348 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6349 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6350 ioa_cfg->regs.clr_interrupt_mask_reg);
6351 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6352 return IPR_RC_JOB_CONTINUE;
6353 }
6354
6355 /* Enable destructive diagnostics on IOA */
3d1d0da6 6356 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6357
6358 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6359 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6360
6361 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6362
6363 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6364 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6365 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6366 ipr_cmd->done = ipr_reset_ioa_job;
6367 add_timer(&ipr_cmd->timer);
6368 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6369
6370 LEAVE;
6371 return IPR_RC_JOB_RETURN;
6372}
6373
6374/**
6375 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6376 * @ipr_cmd: ipr command struct
6377 *
6378 * This function is invoked when an adapter dump has run out
6379 * of processing time.
6380 *
6381 * Return value:
6382 * IPR_RC_JOB_CONTINUE
6383 **/
6384static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6385{
6386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6387
6388 if (ioa_cfg->sdt_state == GET_DUMP)
6389 ioa_cfg->sdt_state = ABORT_DUMP;
6390
6391 ipr_cmd->job_step = ipr_reset_alert;
6392
6393 return IPR_RC_JOB_CONTINUE;
6394}
6395
6396/**
6397 * ipr_unit_check_no_data - Log a unit check/no data error log
6398 * @ioa_cfg: ioa config struct
6399 *
6400 * Logs an error indicating the adapter unit checked, but for some
6401 * reason, we were unable to fetch the unit check buffer.
6402 *
6403 * Return value:
6404 * nothing
6405 **/
6406static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6407{
6408 ioa_cfg->errors_logged++;
6409 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6410}
6411
6412/**
6413 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6414 * @ioa_cfg: ioa config struct
6415 *
6416 * Fetches the unit check buffer from the adapter by clocking the data
6417 * through the mailbox register.
6418 *
6419 * Return value:
6420 * nothing
6421 **/
6422static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6423{
6424 unsigned long mailbox;
6425 struct ipr_hostrcb *hostrcb;
6426 struct ipr_uc_sdt sdt;
6427 int rc, length;
65f56475 6428 u32 ioasc;
1da177e4
LT		 6429
6430 mailbox = readl(ioa_cfg->ioa_mailbox);
6431
6432 if (!ipr_sdt_is_fmt2(mailbox)) {
6433 ipr_unit_check_no_data(ioa_cfg);
6434 return;
6435 }
6436
6437 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6438 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6439 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6440
6441 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6442 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6443 ipr_unit_check_no_data(ioa_cfg);
6444 return;
6445 }
6446
6447 /* Find length of the first sdt entry (UC buffer) */
6448 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6449 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6450
6451 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6452 struct ipr_hostrcb, queue);
6453 list_del(&hostrcb->queue);
6454 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6455
6456 rc = ipr_get_ldump_data_section(ioa_cfg,
6457 be32_to_cpu(sdt.entry[0].bar_str_offset),
6458 (__be32 *)&hostrcb->hcam,
6459 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6460
65f56475 6461 if (!rc) {
1da177e4 6462 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6463 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6464 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6465 ioa_cfg->sdt_state == GET_DUMP)
6466 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6467 } else
1da177e4
LT		 6468 ipr_unit_check_no_data(ioa_cfg);
6469
6470 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6471}
6472
6473/**
6474 * ipr_reset_restore_cfg_space - Restore PCI config space.
6475 * @ipr_cmd: ipr command struct
6476 *
6477 * Description: This function restores the saved PCI config space of
6478 * the adapter, fails all outstanding ops back to the callers, and
6479 * fetches the dump/unit check if applicable to this reset.
6480 *
6481 * Return value:
6482 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6483 **/
6484static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6485{
6486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6487 int rc;
6488
6489 ENTER;
6490 rc = pci_restore_state(ioa_cfg->pdev);
6491
6492 if (rc != PCIBIOS_SUCCESSFUL) {
6493 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6494 return IPR_RC_JOB_CONTINUE;
6495 }
6496
6497 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6498 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6499 return IPR_RC_JOB_CONTINUE;
6500 }
6501
6502 ipr_fail_all_ops(ioa_cfg);
6503
6504 if (ioa_cfg->ioa_unit_checked) {
6505 ioa_cfg->ioa_unit_checked = 0;
6506 ipr_get_unit_check_buffer(ioa_cfg);
6507 ipr_cmd->job_step = ipr_reset_alert;
6508 ipr_reset_start_timer(ipr_cmd, 0);
6509 return IPR_RC_JOB_RETURN;
6510 }
6511
6512 if (ioa_cfg->in_ioa_bringdown) {
6513 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6514 } else {
6515 ipr_cmd->job_step = ipr_reset_enable_ioa;
6516
6517 if (GET_DUMP == ioa_cfg->sdt_state) {
6518 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6519 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6520 schedule_work(&ioa_cfg->work_q);
6521 return IPR_RC_JOB_RETURN;
6522 }
6523 }
6524
6525 ENTER;
6526 return IPR_RC_JOB_CONTINUE;
6527}
6528
e619e1a7
BK		 6529/**
6530 * ipr_reset_bist_done - BIST has completed on the adapter.
6531 * @ipr_cmd: ipr command struct
6532 *
6533 * Description: Unblock config space and resume the reset process.
6534 *
6535 * Return value:
6536 * IPR_RC_JOB_CONTINUE
6537 **/
6538static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6539{
6540 ENTER;
6541 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6542 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6543 LEAVE;
6544 return IPR_RC_JOB_CONTINUE;
6545}
6546
1da177e4
LT		 6547/**
6548 * ipr_reset_start_bist - Run BIST on the adapter.
6549 * @ipr_cmd: ipr command struct
6550 *
6551 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6552 *
6553 * Return value:
6554 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6555 **/
6556static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6557{
6558 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6559 int rc;
6560
6561 ENTER;
b30197d2 6562 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6563 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6564
6565 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6566 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6567 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6568 rc = IPR_RC_JOB_CONTINUE;
6569 } else {
e619e1a7 6570 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6571 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6572 rc = IPR_RC_JOB_RETURN;
6573 }
6574
6575 LEAVE;
6576 return rc;
6577}
6578
463fc696
BK		 6579/**
6580 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6581 * @ipr_cmd: ipr command struct
6582 *
6583 * Description: This clears PCI reset to the adapter and delays two seconds.
6584 *
6585 * Return value:
6586 * IPR_RC_JOB_RETURN
6587 **/
6588static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6589{
6590 ENTER;
6591 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6592 ipr_cmd->job_step = ipr_reset_bist_done;
6593 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6594 LEAVE;
6595 return IPR_RC_JOB_RETURN;
6596}
6597
6598/**
6599 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6600 * @ipr_cmd: ipr command struct
6601 *
6602 * Description: This asserts PCI reset to the adapter.
6603 *
6604 * Return value:
6605 * IPR_RC_JOB_RETURN
6606 **/
6607static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6608{
6609 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6610 struct pci_dev *pdev = ioa_cfg->pdev;
6611
6612 ENTER;
6613 pci_block_user_cfg_access(pdev);
6614 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6615 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6616 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6617 LEAVE;
6618 return IPR_RC_JOB_RETURN;
6619}
6620
1da177e4
LT		 6621/**
6622 * ipr_reset_allowed - Query whether or not IOA can be reset
6623 * @ioa_cfg: ioa config struct
6624 *
6625 * Return value:
6626 * 0 if reset not allowed / non-zero if reset is allowed
6627 **/
6628static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6629{
6630 volatile u32 temp_reg;
6631
6632 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6633 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6634}
6635
6636/**
6637 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6638 * @ipr_cmd: ipr command struct
6639 *
6640 * Description: This function waits for adapter permission to run BIST,
6641 * then runs BIST. If the adapter does not give permission after a
6642 * reasonable time, we will reset the adapter anyway. The impact of
6643 * resetting the adapter without warning the adapter is the risk of
6644 * losing the persistent error log on the adapter. If the adapter is
6645 * reset while it is writing to the flash on the adapter, the flash
6646 * segment will have bad ECC and be zeroed.
6647 *
6648 * Return value:
6649 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6650 **/
6651static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6652{
6653 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6654 int rc = IPR_RC_JOB_RETURN;
6655
6656 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6657 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6658 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6659 } else {
463fc696 6660 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6661 rc = IPR_RC_JOB_CONTINUE;
6662 }
6663
6664 return rc;
6665}
6666
6667/**
6668 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6669 * @ipr_cmd: ipr command struct
6670 *
6671 * Description: This function alerts the adapter that it will be reset.
6672 * If memory space is not currently enabled, proceed directly
6673 * to running BIST on the adapter. The timer must always be started
6674 * so we guarantee we do not run BIST from ipr_isr.
6675 *
6676 * Return value:
6677 * IPR_RC_JOB_RETURN
6678 **/
6679static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6680{
6681 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6682 u16 cmd_reg;
6683 int rc;
6684
6685 ENTER;
6686 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6687
6688 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6689 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6690 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6691 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6692 } else {
463fc696 6693 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6694 }
6695
6696 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6697 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6698
6699 LEAVE;
6700 return IPR_RC_JOB_RETURN;
6701}
6702
6703/**
6704 * ipr_reset_ucode_download_done - Microcode download completion
6705 * @ipr_cmd: ipr command struct
6706 *
6707 * Description: This function unmaps the microcode download buffer.
6708 *
6709 * Return value:
6710 * IPR_RC_JOB_CONTINUE
6711 **/
6712static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6713{
6714 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6715 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6716
6717 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6718 sglist->num_sg, DMA_TO_DEVICE);
6719
6720 ipr_cmd->job_step = ipr_reset_alert;
6721 return IPR_RC_JOB_CONTINUE;
6722}
6723
6724/**
6725 * ipr_reset_ucode_download - Download microcode to the adapter
6726 * @ipr_cmd: ipr command struct
6727 *
6728 * Description: This function checks to see if it there is microcode
6729 * to download to the adapter. If there is, a download is performed.
6730 *
6731 * Return value:
6732 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6733 **/
6734static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6735{
6736 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6737 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6738
6739 ENTER;
6740 ipr_cmd->job_step = ipr_reset_alert;
6741
6742 if (!sglist)
6743 return IPR_RC_JOB_CONTINUE;
6744
6745 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6746 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6747 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6748 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6749 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6750 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6751 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6752
12baa420 6753 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6754 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6755
6756 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6757 IPR_WRITE_BUFFER_TIMEOUT);
6758
6759 LEAVE;
6760 return IPR_RC_JOB_RETURN;
6761}
6762
6763/**
6764 * ipr_reset_shutdown_ioa - Shutdown the adapter
6765 * @ipr_cmd: ipr command struct
6766 *
6767 * Description: This function issues an adapter shutdown of the
6768 * specified type to the specified adapter as part of the
6769 * adapter reset job.
6770 *
6771 * Return value:
6772 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6773 **/
6774static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6775{
6776 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6777 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6778 unsigned long timeout;
6779 int rc = IPR_RC_JOB_CONTINUE;
6780
6781 ENTER;
6782 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6783 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6784 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6785 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6786 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6787
ac09c349
BK		 6788 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6789 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6790 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6791 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6792 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6793 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6794 else
ac09c349 6795 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6796
6797 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6798
6799 rc = IPR_RC_JOB_RETURN;
6800 ipr_cmd->job_step = ipr_reset_ucode_download;
6801 } else
6802 ipr_cmd->job_step = ipr_reset_alert;
6803
6804 LEAVE;
6805 return rc;
6806}
6807
6808/**
6809 * ipr_reset_ioa_job - Adapter reset job
6810 * @ipr_cmd: ipr command struct
6811 *
6812 * Description: This function is the job router for the adapter reset job.
6813 *
6814 * Return value:
6815 * none
6816 **/
6817static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6818{
6819 u32 rc, ioasc;
1da177e4
LT		 6820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6821
6822 do {
6823 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6824
6825 if (ioa_cfg->reset_cmd != ipr_cmd) {
6826 /*
6827 * We are doing nested adapter resets and this is
6828 * not the current reset job.
6829 */
6830 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6831 return;
6832 }
6833
6834 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6835 rc = ipr_cmd->job_step_failed(ipr_cmd);
6836 if (rc == IPR_RC_JOB_RETURN)
6837 return;
1da177e4
LT		 6838 }
6839
6840 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6841 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6842 rc = ipr_cmd->job_step(ipr_cmd);
6843 } while(rc == IPR_RC_JOB_CONTINUE);
6844}
6845
6846/**
6847 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6848 * @ioa_cfg: ioa config struct
6849 * @job_step: first job step of reset job
6850 * @shutdown_type: shutdown type
6851 *
6852 * Description: This function will initiate the reset of the given adapter
6853 * starting at the selected job step.
6854 * If the caller needs to wait on the completion of the reset,
6855 * the caller must sleep on the reset_wait_q.
6856 *
6857 * Return value:
6858 * none
6859 **/
6860static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6861 int (*job_step) (struct ipr_cmnd *),
6862 enum ipr_shutdown_type shutdown_type)
6863{
6864 struct ipr_cmnd *ipr_cmd;
6865
6866 ioa_cfg->in_reset_reload = 1;
6867 ioa_cfg->allow_cmds = 0;
6868 scsi_block_requests(ioa_cfg->host);
6869
6870 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6871 ioa_cfg->reset_cmd = ipr_cmd;
6872 ipr_cmd->job_step = job_step;
6873 ipr_cmd->u.shutdown_type = shutdown_type;
6874
6875 ipr_reset_ioa_job(ipr_cmd);
6876}
6877
6878/**
6879 * ipr_initiate_ioa_reset - Initiate an adapter reset
6880 * @ioa_cfg: ioa config struct
6881 * @shutdown_type: shutdown type
6882 *
6883 * Description: This function will initiate the reset of the given adapter.
6884 * If the caller needs to wait on the completion of the reset,
6885 * the caller must sleep on the reset_wait_q.
6886 *
6887 * Return value:
6888 * none
6889 **/
6890static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6891 enum ipr_shutdown_type shutdown_type)
6892{
6893 if (ioa_cfg->ioa_is_dead)
6894 return;
6895
6896 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6897 ioa_cfg->sdt_state = ABORT_DUMP;
6898
6899 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6900 dev_err(&ioa_cfg->pdev->dev,
6901 "IOA taken offline - error recovery failed\n");
6902
6903 ioa_cfg->reset_retries = 0;
6904 ioa_cfg->ioa_is_dead = 1;
6905
6906 if (ioa_cfg->in_ioa_bringdown) {
6907 ioa_cfg->reset_cmd = NULL;
6908 ioa_cfg->in_reset_reload = 0;
6909 ipr_fail_all_ops(ioa_cfg);
6910 wake_up_all(&ioa_cfg->reset_wait_q);
6911
6912 spin_unlock_irq(ioa_cfg->host->host_lock);
6913 scsi_unblock_requests(ioa_cfg->host);
6914 spin_lock_irq(ioa_cfg->host->host_lock);
6915 return;
6916 } else {
6917 ioa_cfg->in_ioa_bringdown = 1;
6918 shutdown_type = IPR_SHUTDOWN_NONE;
6919 }
6920 }
6921
6922 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6923 shutdown_type);
6924}
6925
f8a88b19
LV		 6926/**
6927 * ipr_reset_freeze - Hold off all I/O activity
6928 * @ipr_cmd: ipr command struct
6929 *
6930 * Description: If the PCI slot is frozen, hold off all I/O
6931 * activity; then, as soon as the slot is available again,
6932 * initiate an adapter reset.
6933 */
6934static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6935{
6936 /* Disallow new interrupts, avoid loop */
6937 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6938 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6939 ipr_cmd->done = ipr_reset_ioa_job;
6940 return IPR_RC_JOB_RETURN;
6941}
6942
6943/**
6944 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6945 * @pdev: PCI device struct
6946 *
6947 * Description: This routine is called to tell us that the PCI bus
6948 * is down. Can't do anything here, except put the device driver
6949 * into a holding pattern, waiting for the PCI bus to come back.
6950 */
6951static void ipr_pci_frozen(struct pci_dev *pdev)
6952{
6953 unsigned long flags = 0;
6954 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6955
6956 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6957 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6959}
6960
6961/**
6962 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6963 * @pdev: PCI device struct
6964 *
6965 * Description: This routine is called by the pci error recovery
6966 * code after the PCI slot has been reset, just before we
6967 * should resume normal operations.
6968 */
6969static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6970{
6971 unsigned long flags = 0;
6972 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6973
6974 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6975 if (ioa_cfg->needs_warm_reset)
6976 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6977 else
6978 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6979 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6980 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6981 return PCI_ERS_RESULT_RECOVERED;
6982}
6983
6984/**
6985 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6986 * @pdev: PCI device struct
6987 *
6988 * Description: This routine is called when the PCI bus has
6989 * permanently failed.
6990 */
6991static void ipr_pci_perm_failure(struct pci_dev *pdev)
6992{
6993 unsigned long flags = 0;
6994 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6995
6996 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6997 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6998 ioa_cfg->sdt_state = ABORT_DUMP;
6999 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7000 ioa_cfg->in_ioa_bringdown = 1;
7001 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7002 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7003}
7004
7005/**
7006 * ipr_pci_error_detected - Called when a PCI error is detected.
7007 * @pdev: PCI device struct
7008 * @state: PCI channel state
7009 *
7010 * Description: Called when a PCI error is detected.
7011 *
7012 * Return value:
7013 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7014 */
7015static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7016 pci_channel_state_t state)
7017{
7018 switch (state) {
7019 case pci_channel_io_frozen:
7020 ipr_pci_frozen(pdev);
7021 return PCI_ERS_RESULT_NEED_RESET;
7022 case pci_channel_io_perm_failure:
7023 ipr_pci_perm_failure(pdev);
7024 return PCI_ERS_RESULT_DISCONNECT;
7025 break;
7026 default:
7027 break;
7028 }
7029 return PCI_ERS_RESULT_NEED_RESET;
7030}
7031
1da177e4
LT		 7032/**
7033 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7034 * @ioa_cfg: ioa cfg struct
7035 *
7036 * Description: This is the second phase of adapter intialization
7037 * This function takes care of initilizing the adapter to the point
7038 * where it can accept new commands.
7039
7040 * Return value:
b1c11812 7041 * 0 on success / -EIO on failure
1da177e4
LT		 7042 **/
7043static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7044{
7045 int rc = 0;
7046 unsigned long host_lock_flags = 0;
7047
7048 ENTER;
7049 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7050 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7051 if (ioa_cfg->needs_hard_reset) {
7052 ioa_cfg->needs_hard_reset = 0;
7053 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7054 } else
7055 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7056 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7057
7058 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7059 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7060 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7061
7062 if (ioa_cfg->ioa_is_dead) {
7063 rc = -EIO;
7064 } else if (ipr_invalid_adapter(ioa_cfg)) {
7065 if (!ipr_testmode)
7066 rc = -EIO;
7067
7068 dev_err(&ioa_cfg->pdev->dev,
7069 "Adapter not supported in this hardware configuration.\n");
7070 }
7071
7072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7073
7074 LEAVE;
7075 return rc;
7076}
7077
7078/**
7079 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7080 * @ioa_cfg: ioa config struct
7081 *
7082 * Return value:
7083 * none
7084 **/
7085static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7086{
7087 int i;
7088
7089 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7090 if (ioa_cfg->ipr_cmnd_list[i])
7091 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7092 ioa_cfg->ipr_cmnd_list[i],
7093 ioa_cfg->ipr_cmnd_list_dma[i]);
7094
7095 ioa_cfg->ipr_cmnd_list[i] = NULL;
7096 }
7097
7098 if (ioa_cfg->ipr_cmd_pool)
7099 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7100
7101 ioa_cfg->ipr_cmd_pool = NULL;
7102}
7103
7104/**
7105 * ipr_free_mem - Frees memory allocated for an adapter
7106 * @ioa_cfg: ioa cfg struct
7107 *
7108 * Return value:
7109 * nothing
7110 **/
7111static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7112{
7113 int i;
7114
7115 kfree(ioa_cfg->res_entries);
7116 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7117 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7118 ipr_free_cmd_blks(ioa_cfg);
7119 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7120 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7121 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7122 ioa_cfg->cfg_table,
7123 ioa_cfg->cfg_table_dma);
7124
7125 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7126 pci_free_consistent(ioa_cfg->pdev,
7127 sizeof(struct ipr_hostrcb),
7128 ioa_cfg->hostrcb[i],
7129 ioa_cfg->hostrcb_dma[i]);
7130 }
7131
7132 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7133 kfree(ioa_cfg->trace);
7134}
7135
7136/**
7137 * ipr_free_all_resources - Free all allocated resources for an adapter.
7138 * @ipr_cmd: ipr command struct
7139 *
7140 * This function frees all allocated resources for the
7141 * specified adapter.
7142 *
7143 * Return value:
7144 * none
7145 **/
7146static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7147{
7148 struct pci_dev *pdev = ioa_cfg->pdev;
7149
7150 ENTER;
7151 free_irq(pdev->irq, ioa_cfg);
5a9ef25b 7152 pci_disable_msi(pdev);
1da177e4
LT		 7153 iounmap(ioa_cfg->hdw_dma_regs);
7154 pci_release_regions(pdev);
7155 ipr_free_mem(ioa_cfg);
7156 scsi_host_put(ioa_cfg->host);
7157 pci_disable_device(pdev);
7158 LEAVE;
7159}
7160
7161/**
7162 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7163 * @ioa_cfg: ioa config struct
7164 *
7165 * Return value:
7166 * 0 on success / -ENOMEM on allocation failure
7167 **/
7168static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7169{
7170 struct ipr_cmnd *ipr_cmd;
7171 struct ipr_ioarcb *ioarcb;
7172 dma_addr_t dma_addr;
7173 int i;
7174
7175 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7176 sizeof(struct ipr_cmnd), 8, 0);
7177
7178 if (!ioa_cfg->ipr_cmd_pool)
7179 return -ENOMEM;
7180
7181 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7182 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7183
7184 if (!ipr_cmd) {
7185 ipr_free_cmd_blks(ioa_cfg);
7186 return -ENOMEM;
7187 }
7188
7189 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7190 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7191 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7192
7193 ioarcb = &ipr_cmd->ioarcb;
7194 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7195 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7196 ioarcb->write_ioadl_addr =
7197 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7198 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7199 ioarcb->ioasa_host_pci_addr =
7200 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7201 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7202 ipr_cmd->cmd_index = i;
7203 ipr_cmd->ioa_cfg = ioa_cfg;
7204 ipr_cmd->sense_buffer_dma = dma_addr +
7205 offsetof(struct ipr_cmnd, sense_buffer);
7206
7207 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7208 }
7209
7210 return 0;
7211}
7212
7213/**
7214 * ipr_alloc_mem - Allocate memory for an adapter
7215 * @ioa_cfg: ioa config struct
7216 *
7217 * Return value:
7218 * 0 on success / non-zero for error
7219 **/
7220static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7221{
7222 struct pci_dev *pdev = ioa_cfg->pdev;
7223 int i, rc = -ENOMEM;
7224
7225 ENTER;
0bc42e35 7226 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7227 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7228
7229 if (!ioa_cfg->res_entries)
7230 goto out;
7231
1da177e4
LT		 7232 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7233 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7234
7235 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7236 sizeof(struct ipr_misc_cbs),
7237 &ioa_cfg->vpd_cbs_dma);
7238
7239 if (!ioa_cfg->vpd_cbs)
7240 goto out_free_res_entries;
7241
7242 if (ipr_alloc_cmd_blks(ioa_cfg))
7243 goto out_free_vpd_cbs;
7244
7245 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7246 sizeof(u32) * IPR_NUM_CMD_BLKS,
7247 &ioa_cfg->host_rrq_dma);
7248
7249 if (!ioa_cfg->host_rrq)
7250 goto out_ipr_free_cmd_blocks;
7251
7252 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7253 sizeof(struct ipr_config_table),
7254 &ioa_cfg->cfg_table_dma);
7255
7256 if (!ioa_cfg->cfg_table)
7257 goto out_free_host_rrq;
7258
7259 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7260 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7261 sizeof(struct ipr_hostrcb),
7262 &ioa_cfg->hostrcb_dma[i]);
7263
7264 if (!ioa_cfg->hostrcb[i])
7265 goto out_free_hostrcb_dma;
7266
7267 ioa_cfg->hostrcb[i]->hostrcb_dma =
7268 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7269 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7270 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7271 }
7272
0bc42e35 7273 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7274 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7275
7276 if (!ioa_cfg->trace)
7277 goto out_free_hostrcb_dma;
7278
1da177e4
LT		 7279 rc = 0;
7280out:
7281 LEAVE;
7282 return rc;
7283
7284out_free_hostrcb_dma:
7285 while (i-- > 0) {
7286 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7287 ioa_cfg->hostrcb[i],
7288 ioa_cfg->hostrcb_dma[i]);
7289 }
7290 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7291 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7292out_free_host_rrq:
7293 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7294 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7295out_ipr_free_cmd_blocks:
7296 ipr_free_cmd_blks(ioa_cfg);
7297out_free_vpd_cbs:
7298 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7299 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7300out_free_res_entries:
7301 kfree(ioa_cfg->res_entries);
7302 goto out;
7303}
7304
7305/**
7306 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7307 * @ioa_cfg: ioa config struct
7308 *
7309 * Return value:
7310 * none
7311 **/
7312static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7313{
7314 int i;
7315
7316 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7317 ioa_cfg->bus_attr[i].bus = i;
7318 ioa_cfg->bus_attr[i].qas_enabled = 0;
7319 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7320 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7321 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7322 else
7323 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7324 }
7325}
7326
7327/**
7328 * ipr_init_ioa_cfg - Initialize IOA config struct
7329 * @ioa_cfg: ioa config struct
7330 * @host: scsi host struct
7331 * @pdev: PCI dev struct
7332 *
7333 * Return value:
7334 * none
7335 **/
7336static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7337 struct Scsi_Host *host, struct pci_dev *pdev)
7338{
7339 const struct ipr_interrupt_offsets *p;
7340 struct ipr_interrupts *t;
7341 void __iomem *base;
7342
7343 ioa_cfg->host = host;
7344 ioa_cfg->pdev = pdev;
7345 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7346 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7347 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7348 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7349 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7350 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7351 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7352 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7353 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7354 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7355
7356 INIT_LIST_HEAD(&ioa_cfg->free_q);
7357 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7358 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7359 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7360 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7361 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7362 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7363 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7364 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7365 if (ipr_enable_cache)
7366 ioa_cfg->cache_state = CACHE_ENABLED;
7367 else
7368 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7369
7370 ipr_initialize_bus_attr(ioa_cfg);
7371
7372 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7373 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7374 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7375 host->unique_id = host->host_no;
7376 host->max_cmd_len = IPR_MAX_CDB_LEN;
7377 pci_set_drvdata(pdev, ioa_cfg);
7378
7379 p = &ioa_cfg->chip_cfg->regs;
7380 t = &ioa_cfg->regs;
7381 base = ioa_cfg->hdw_dma_regs;
7382
7383 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7384 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7385 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7386 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7387 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7388 t->ioarrin_reg = base + p->ioarrin_reg;
7389 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7390 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7391 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7392}
7393
7394/**
7395 * ipr_get_chip_cfg - Find adapter chip configuration
7396 * @dev_id: PCI device id struct
7397 *
7398 * Return value:
7399 * ptr to chip config on success / NULL on failure
7400 **/
7401static const struct ipr_chip_cfg_t * __devinit
7402ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7403{
7404 int i;
7405
1da177e4
LT		 7406 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7407 if (ipr_chip[i].vendor == dev_id->vendor &&
7408 ipr_chip[i].device == dev_id->device)
7409 return ipr_chip[i].cfg;
7410 return NULL;
7411}
7412
7413/**
7414 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7415 * @pdev: PCI device struct
7416 * @dev_id: PCI device id struct
7417 *
7418 * Return value:
7419 * 0 on success / non-zero on failure
7420 **/
7421static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7422 const struct pci_device_id *dev_id)
7423{
7424 struct ipr_ioa_cfg *ioa_cfg;
7425 struct Scsi_Host *host;
7426 unsigned long ipr_regs_pci;
7427 void __iomem *ipr_regs;
a2a65a3e 7428 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7429 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7430
7431 ENTER;
7432
7433 if ((rc = pci_enable_device(pdev))) {
7434 dev_err(&pdev->dev, "Cannot enable adapter\n");
7435 goto out;
7436 }
7437
5a9ef25b
WB		 7438 if (!(rc = pci_enable_msi(pdev)))
7439 dev_info(&pdev->dev, "MSI enabled\n");
7440 else if (ipr_debug)
7441 dev_info(&pdev->dev, "Cannot enable MSI\n");
7442
1da177e4
LT		 7443 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7444
7445 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7446
7447 if (!host) {
7448 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7449 rc = -ENOMEM;
7450 goto out_disable;
7451 }
7452
7453 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7454 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7455 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7456 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7457
7458 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7459
7460 if (!ioa_cfg->chip_cfg) {
7461 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7462 dev_id->vendor, dev_id->device);
7463 goto out_scsi_host_put;
7464 }
7465
5469cb5b
BK		 7466 if (ipr_transop_timeout)
7467 ioa_cfg->transop_timeout = ipr_transop_timeout;
7468 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7469 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7470 else
7471 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7472
44c10138 7473 ioa_cfg->revid = pdev->revision;
463fc696 7474
1da177e4
LT		 7475 ipr_regs_pci = pci_resource_start(pdev, 0);
7476
7477 rc = pci_request_regions(pdev, IPR_NAME);
7478 if (rc < 0) {
7479 dev_err(&pdev->dev,
7480 "Couldn't register memory range of registers\n");
7481 goto out_scsi_host_put;
7482 }
7483
25729a7f 7484 ipr_regs = pci_ioremap_bar(pdev, 0);
1da177e4
LT		 7485
7486 if (!ipr_regs) {
7487 dev_err(&pdev->dev,
7488 "Couldn't map memory range of registers\n");
7489 rc = -ENOMEM;
7490 goto out_release_regions;
7491 }
7492
7493 ioa_cfg->hdw_dma_regs = ipr_regs;
7494 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7495 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7496
7497 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7498
7499 pci_set_master(pdev);
7500
7501 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7502 if (rc < 0) {
7503 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7504 goto cleanup_nomem;
7505 }
7506
7507 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7508 ioa_cfg->chip_cfg->cache_line_size);
7509
7510 if (rc != PCIBIOS_SUCCESSFUL) {
7511 dev_err(&pdev->dev, "Write of cache line size failed\n");
7512 rc = -EIO;
7513 goto cleanup_nomem;
7514 }
7515
7516 /* Save away PCI config space for use following IOA reset */
7517 rc = pci_save_state(pdev);
7518
7519 if (rc != PCIBIOS_SUCCESSFUL) {
7520 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7521 rc = -EIO;
7522 goto cleanup_nomem;
7523 }
7524
7525 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7526 goto cleanup_nomem;
7527
7528 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7529 goto cleanup_nomem;
7530
7531 rc = ipr_alloc_mem(ioa_cfg);
7532 if (rc < 0) {
7533 dev_err(&pdev->dev,
7534 "Couldn't allocate enough memory for device driver!\n");
7535 goto cleanup_nomem;
7536 }
7537
ce155cce
BK		 7538 /*
7539 * If HRRQ updated interrupt is not masked, or reset alert is set,
7540 * the card is in an unknown state and needs a hard reset
7541 */
7542 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7543 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7544 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7545 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7546 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7547 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7548 ioa_cfg->needs_hard_reset = 1;
7549 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7550 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7551
1da177e4 7552 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7553 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7554
7555 if (rc) {
7556 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7557 pdev->irq, rc);
7558 goto cleanup_nolog;
7559 }
7560
463fc696
BK		 7561 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7562 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7563 ioa_cfg->needs_warm_reset = 1;
7564 ioa_cfg->reset = ipr_reset_slot_reset;
7565 } else
7566 ioa_cfg->reset = ipr_reset_start_bist;
7567
1da177e4
LT		 7568 spin_lock(&ipr_driver_lock);
7569 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7570 spin_unlock(&ipr_driver_lock);
7571
7572 LEAVE;
7573out:
7574 return rc;
7575
7576cleanup_nolog:
7577 ipr_free_mem(ioa_cfg);
7578cleanup_nomem:
7579 iounmap(ipr_regs);
7580out_release_regions:
7581 pci_release_regions(pdev);
7582out_scsi_host_put:
7583 scsi_host_put(host);
7584out_disable:
5a9ef25b 7585 pci_disable_msi(pdev);
1da177e4
LT		 7586 pci_disable_device(pdev);
7587 goto out;
7588}
7589
7590/**
7591 * ipr_scan_vsets - Scans for VSET devices
7592 * @ioa_cfg: ioa config struct
7593 *
7594 * Description: Since the VSET resources do not follow SAM in that we can have
7595 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7596 *
7597 * Return value:
7598 * none
7599 **/
7600static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7601{
7602 int target, lun;
7603
7604 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7605 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7606 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7607}
7608
7609/**
7610 * ipr_initiate_ioa_bringdown - Bring down an adapter
7611 * @ioa_cfg: ioa config struct
7612 * @shutdown_type: shutdown type
7613 *
7614 * Description: This function will initiate bringing down the adapter.
7615 * This consists of issuing an IOA shutdown to the adapter
7616 * to flush the cache, and running BIST.
7617 * If the caller needs to wait on the completion of the reset,
7618 * the caller must sleep on the reset_wait_q.
7619 *
7620 * Return value:
7621 * none
7622 **/
7623static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7624 enum ipr_shutdown_type shutdown_type)
7625{
7626 ENTER;
7627 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7628 ioa_cfg->sdt_state = ABORT_DUMP;
7629 ioa_cfg->reset_retries = 0;
7630 ioa_cfg->in_ioa_bringdown = 1;
7631 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7632 LEAVE;
7633}
7634
7635/**
7636 * __ipr_remove - Remove a single adapter
7637 * @pdev: pci device struct
7638 *
7639 * Adapter hot plug remove entry point.
7640 *
7641 * Return value:
7642 * none
7643 **/
7644static void __ipr_remove(struct pci_dev *pdev)
7645{
7646 unsigned long host_lock_flags = 0;
7647 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7648 ENTER;
7649
7650 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7651 while(ioa_cfg->in_reset_reload) {
7652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7653 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7654 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7655 }
7656
1da177e4
LT		 7657 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7658
7659 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7660 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7661 flush_scheduled_work();
1da177e4
LT		 7662 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7663
7664 spin_lock(&ipr_driver_lock);
7665 list_del(&ioa_cfg->queue);
7666 spin_unlock(&ipr_driver_lock);
7667
7668 if (ioa_cfg->sdt_state == ABORT_DUMP)
7669 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7670 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7671
7672 ipr_free_all_resources(ioa_cfg);
7673
7674 LEAVE;
7675}
7676
7677/**
7678 * ipr_remove - IOA hot plug remove entry point
7679 * @pdev: pci device struct
7680 *
7681 * Adapter hot plug remove entry point.
7682 *
7683 * Return value:
7684 * none
7685 **/
7686static void ipr_remove(struct pci_dev *pdev)
7687{
7688 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7689
7690 ENTER;
7691
ee959b00 7692 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4 7693 &ipr_trace_attr);
ee959b00 7694 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7695 &ipr_dump_attr);
7696 scsi_remove_host(ioa_cfg->host);
7697
7698 __ipr_remove(pdev);
7699
7700 LEAVE;
7701}
7702
7703/**
7704 * ipr_probe - Adapter hot plug add entry point
7705 *
7706 * Return value:
7707 * 0 on success / non-zero on failure
7708 **/
7709static int __devinit ipr_probe(struct pci_dev *pdev,
7710 const struct pci_device_id *dev_id)
7711{
7712 struct ipr_ioa_cfg *ioa_cfg;
7713 int rc;
7714
7715 rc = ipr_probe_ioa(pdev, dev_id);
7716
7717 if (rc)
7718 return rc;
7719
7720 ioa_cfg = pci_get_drvdata(pdev);
7721 rc = ipr_probe_ioa_part2(ioa_cfg);
7722
7723 if (rc) {
7724 __ipr_remove(pdev);
7725 return rc;
7726 }
7727
7728 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7729
7730 if (rc) {
7731 __ipr_remove(pdev);
7732 return rc;
7733 }
7734
ee959b00 7735 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7736 &ipr_trace_attr);
7737
7738 if (rc) {
7739 scsi_remove_host(ioa_cfg->host);
7740 __ipr_remove(pdev);
7741 return rc;
7742 }
7743
ee959b00 7744 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7745 &ipr_dump_attr);
7746
7747 if (rc) {
ee959b00 7748 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7749 &ipr_trace_attr);
7750 scsi_remove_host(ioa_cfg->host);
7751 __ipr_remove(pdev);
7752 return rc;
7753 }
7754
7755 scsi_scan_host(ioa_cfg->host);
7756 ipr_scan_vsets(ioa_cfg);
7757 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7758 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7759 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7760 schedule_work(&ioa_cfg->work_q);
7761 return 0;
7762}
7763
7764/**
7765 * ipr_shutdown - Shutdown handler.
d18c3db5 7766 * @pdev: pci device struct
1da177e4
LT		 7767 *
7768 * This function is invoked upon system shutdown/reboot. It will issue
7769 * an adapter shutdown to the adapter to flush the write cache.
7770 *
7771 * Return value:
7772 * none
7773 **/
d18c3db5 7774static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7775{
d18c3db5 7776 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7777 unsigned long lock_flags = 0;
7778
7779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7780 while(ioa_cfg->in_reset_reload) {
7781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7783 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7784 }
7785
1da177e4
LT		 7786 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7787 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7788 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7789}
7790
7791static struct pci_device_id ipr_pci_table[] __devinitdata = {
7792 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7793 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7794 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7795 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7796 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7797 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7798 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7800 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7802 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7804 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7805 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7806 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7808 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7809 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7811 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 7812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7813 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7814 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7816 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7817 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7819 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7820 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7821 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7824 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7827 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7830 IPR_USE_LONG_TRANSOP_TIMEOUT },
7831 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7832 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7835 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7836 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7837 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7838 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7840 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7841 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7842 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7843 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7844 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7845 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7846 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7847 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7848 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7849 { }
7850};
7851MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7852
f8a88b19
LV		 7853static struct pci_error_handlers ipr_err_handler = {
7854 .error_detected = ipr_pci_error_detected,
7855 .slot_reset = ipr_pci_slot_reset,
7856};
7857
1da177e4
LT		 7858static struct pci_driver ipr_driver = {
7859 .name = IPR_NAME,
7860 .id_table = ipr_pci_table,
7861 .probe = ipr_probe,
7862 .remove = ipr_remove,
d18c3db5 7863 .shutdown = ipr_shutdown,
f8a88b19 7864 .err_handler = &ipr_err_handler,
1da177e4
LT		 7865};
7866
7867/**
7868 * ipr_init - Module entry point
7869 *
7870 * Return value:
7871 * 0 on success / negative value on failure
7872 **/
7873static int __init ipr_init(void)
7874{
7875 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7876 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7877
dcbccbde 7878 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7879}
7880
7881/**
7882 * ipr_exit - Module unload
7883 *
7884 * Module unload entry point.
7885 *
7886 * Return value:
7887 * none
7888 **/
7889static void __exit ipr_exit(void)
7890{
7891 pci_unregister_driver(&ipr_driver);
7892}
7893
7894module_init(ipr_init);
7895module_exit(ipr_exit);
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