]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - drivers/scsi/ipr.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[SCSI] megaraid_mbox: fix Dell CERC firmware problem
[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>
1da177e4
LT		 74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
1da177e4
LT		 82#include "ipr.h"
83
84/*
85 * Global Data
86 */
b7d68ca3 87static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 88static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89static unsigned int ipr_max_speed = 1;
90static int ipr_testmode = 0;
91static unsigned int ipr_fastfail = 0;
5469cb5b 92static unsigned int ipr_transop_timeout = 0;
62275040 93static unsigned int ipr_enable_cache = 1;
d3c74871 94static unsigned int ipr_debug = 0;
ac09c349 95static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 96static DEFINE_SPINLOCK(ipr_driver_lock);
97
98/* This table describes the differences between DMA controller chips */
99static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130};
131
132static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436
BK		 135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
60e7486b 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
1da177e4
LT		 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140};
141
142static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144};
145
146MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148module_param_named(max_speed, ipr_max_speed, uint, 0);
149MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150module_param_named(log_level, ipr_log_level, uint, 0);
151MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152module_param_named(testmode, ipr_testmode, int, 0);
153MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154module_param_named(fastfail, ipr_fastfail, int, 0);
155MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
62275040
BK		 158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 162module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
163MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
1da177e4
LT		 164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
1da177e4
LT		 167/* A constant array of IOASCs/URCs/Error Messages */
168static const
169struct ipr_error_table_t ipr_error_table[] = {
933916f3 170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 171 "8155: An unknown error was received"},
172 {0x00330000, 0, 0,
173 "Soft underlength error"},
174 {0x005A0000, 0, 0,
175 "Command to be cancelled not found"},
176 {0x00808000, 0, 0,
177 "Qualified success"},
933916f3 178 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 179 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 181 "4101: Soft device bus fabric error"},
933916f3 182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 183 "FFF9: Device sector reassign successful"},
933916f3 184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 185 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 187 "7001: IOA sector reassignment successful"},
933916f3 188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 189 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 191 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 193 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 195 "FFF6: Device hardware error recovered by the IOA"},
933916f3 196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 197 "FFF6: Device hardware error recovered by the device"},
933916f3 198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 199 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 201 "FFFA: Undefined device response recovered by the IOA"},
933916f3 202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 203 "FFF6: Device bus error, message or command phase"},
933916f3 204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 205 "FFFE: Task Management Function failed"},
933916f3 206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 207 "FFF6: Failure prediction threshold exceeded"},
933916f3 208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
65f56475
BK		 212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
213 "9070: IOA requested reset"},
1da177e4
LT		 214 {0x023F0000, 0, 0,
215 "Synchronization required"},
216 {0x024E0000, 0, 0,
217 "No ready, IOA shutdown"},
218 {0x025A0000, 0, 0,
219 "Not ready, IOA has been shutdown"},
933916f3 220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 221 "3020: Storage subsystem configuration error"},
222 {0x03110B00, 0, 0,
223 "FFF5: Medium error, data unreadable, recommend reassign"},
224 {0x03110C00, 0, 0,
225 "7000: Medium error, data unreadable, do not reassign"},
933916f3 226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 227 "FFF3: Disk media format bad"},
933916f3 228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 229 "3002: Addressed device failed to respond to selection"},
933916f3 230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 231 "3100: Device bus error"},
933916f3 232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 233 "3109: IOA timed out a device command"},
234 {0x04088000, 0, 0,
235 "3120: SCSI bus is not operational"},
933916f3 236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 237 "4100: Hard device bus fabric error"},
933916f3 238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 239 "9000: IOA reserved area data check"},
933916f3 240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 241 "9001: IOA reserved area invalid data pattern"},
933916f3 242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 243 "9002: IOA reserved area LRC error"},
933916f3 244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 245 "102E: Out of alternate sectors for disk storage"},
933916f3 246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 247 "FFF4: Data transfer underlength error"},
933916f3 248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 249 "FFF4: Data transfer overlength error"},
933916f3 250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 251 "3400: Logical unit failure"},
933916f3 252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 253 "FFF4: Device microcode is corrupt"},
933916f3 254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 255 "8150: PCI bus error"},
256 {0x04430000, 1, 0,
257 "Unsupported device bus message received"},
933916f3 258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 259 "FFF4: Disk device problem"},
933916f3 260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 261 "8150: Permanent IOA failure"},
933916f3 262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 263 "3010: Disk device returned wrong response to IOA"},
933916f3 264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 265 "8151: IOA microcode error"},
266 {0x04448500, 0, 0,
267 "Device bus status error"},
933916f3 268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 269 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 270 {0x04448700, 0, 0,
271 "ATA device status error"},
1da177e4
LT		 272 {0x04490000, 0, 0,
273 "Message reject received from the device"},
933916f3 274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 275 "8008: A permanent cache battery pack failure occurred"},
933916f3 276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 277 "9090: Disk unit has been modified after the last known status"},
933916f3 278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 279 "9081: IOA detected device error"},
933916f3 280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 281 "9082: IOA detected device error"},
933916f3 282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 283 "3110: Device bus error, message or command phase"},
933916f3 284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 285 "3110: SAS Command / Task Management Function failed"},
933916f3 286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 287 "9091: Incorrect hardware configuration change has been detected"},
933916f3 288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 289 "9073: Invalid multi-adapter configuration"},
933916f3 290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 291 "4010: Incorrect connection between cascaded expanders"},
933916f3 292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 293 "4020: Connections exceed IOA design limits"},
933916f3 294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 295 "4030: Incorrect multipath connection"},
933916f3 296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 297 "4110: Unsupported enclosure function"},
933916f3 298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 299 "FFF4: Command to logical unit failed"},
300 {0x05240000, 1, 0,
301 "Illegal request, invalid request type or request packet"},
302 {0x05250000, 0, 0,
303 "Illegal request, invalid resource handle"},
b0df54bb
BK		 304 {0x05258000, 0, 0,
305 "Illegal request, commands not allowed to this device"},
306 {0x05258100, 0, 0,
307 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 308 {0x05260000, 0, 0,
309 "Illegal request, invalid field in parameter list"},
310 {0x05260100, 0, 0,
311 "Illegal request, parameter not supported"},
312 {0x05260200, 0, 0,
313 "Illegal request, parameter value invalid"},
314 {0x052C0000, 0, 0,
315 "Illegal request, command sequence error"},
b0df54bb
BK		 316 {0x052C8000, 1, 0,
317 "Illegal request, dual adapter support not enabled"},
933916f3 318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 319 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 321 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 323 "3140: Device bus not ready to ready transition"},
933916f3 324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 325 "FFFB: SCSI bus was reset"},
326 {0x06290500, 0, 0,
327 "FFFE: SCSI bus transition to single ended"},
328 {0x06290600, 0, 0,
329 "FFFE: SCSI bus transition to LVD"},
933916f3 330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 331 "FFFB: SCSI bus was reset by another initiator"},
933916f3 332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 333 "3029: A device replacement has occurred"},
933916f3 334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 335 "9051: IOA cache data exists for a missing or failed device"},
933916f3 336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 339 "9025: Disk unit is not supported at its physical location"},
933916f3 340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 341 "3020: IOA detected a SCSI bus configuration error"},
933916f3 342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 343 "3150: SCSI bus configuration error"},
933916f3 344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 345 "9074: Asymmetric advanced function disk configuration"},
933916f3 346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 347 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 349 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 351 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 353 "9076: Configuration error, missing remote IOA"},
933916f3 354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 355 "4050: Enclosure does not support a required multipath function"},
933916f3 356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 357 "9041: Array protection temporarily suspended"},
933916f3 358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 359 "9042: Corrupt array parity detected on specified device"},
933916f3 360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 361 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 363 "9071: Link operational transition"},
933916f3 364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 365 "9072: Link not operational transition"},
933916f3 366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 367 "9032: Array exposed but still protected"},
e435340c
BK		 368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
369 "70DD: Device forced failed by disrupt device command"},
933916f3 370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 371 "4061: Multipath redundancy level got better"},
933916f3 372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 373 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 374 {0x07270000, 0, 0,
375 "Failure due to other device"},
933916f3 376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 377 "9008: IOA does not support functions expected by devices"},
933916f3 378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 379 "9010: Cache data associated with attached devices cannot be found"},
933916f3 380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 381 "9011: Cache data belongs to devices other than those attached"},
933916f3 382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 383 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 385 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 387 "9022: Exposed array is missing a required device"},
933916f3 388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 389 "9023: Array member(s) not at required physical locations"},
933916f3 390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 391 "9024: Array not functional due to present hardware configuration"},
933916f3 392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 393 "9026: Array not functional due to present hardware configuration"},
933916f3 394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 395 "9027: Array is missing a device and parity is out of sync"},
933916f3 396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 397 "9028: Maximum number of arrays already exist"},
933916f3 398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 399 "9050: Required cache data cannot be located for a disk unit"},
933916f3 400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 401 "9052: Cache data exists for a device that has been modified"},
933916f3 402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 403 "9054: IOA resources not available due to previous problems"},
933916f3 404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 405 "9092: Disk unit requires initialization before use"},
933916f3 406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 407 "9029: Incorrect hardware configuration change has been detected"},
933916f3 408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 409 "9060: One or more disk pairs are missing from an array"},
933916f3 410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 411 "9061: One or more disks are missing from an array"},
933916f3 412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 413 "9062: One or more disks are missing from an array"},
933916f3 414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 415 "9063: Maximum number of functional arrays has been exceeded"},
416 {0x0B260000, 0, 0,
417 "Aborted command, invalid descriptor"},
418 {0x0B5A0000, 0, 0,
419 "Command terminated by host"}
420};
421
422static const struct ipr_ses_table_entry ipr_ses_table[] = {
423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
436};
437
438/*
439 * Function Prototypes
440 */
441static int ipr_reset_alert(struct ipr_cmnd *);
442static void ipr_process_ccn(struct ipr_cmnd *);
443static void ipr_process_error(struct ipr_cmnd *);
444static void ipr_reset_ioa_job(struct ipr_cmnd *);
445static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
446 enum ipr_shutdown_type);
447
448#ifdef CONFIG_SCSI_IPR_TRACE
449/**
450 * ipr_trc_hook - Add a trace entry to the driver trace
451 * @ipr_cmd: ipr command struct
452 * @type: trace type
453 * @add_data: additional data
454 *
455 * Return value:
456 * none
457 **/
458static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
459 u8 type, u32 add_data)
460{
461 struct ipr_trace_entry *trace_entry;
462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
463
464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
465 trace_entry->time = jiffies;
466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
467 trace_entry->type = type;
35a39691
BK		 468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
471 trace_entry->u.add_data = add_data;
472}
473#else
474#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
475#endif
476
477/**
478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
479 * @ipr_cmd: ipr command struct
480 *
481 * Return value:
482 * none
483 **/
484static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
485{
486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
51b1c7e1 488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 489
490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
491 ioarcb->write_data_transfer_length = 0;
492 ioarcb->read_data_transfer_length = 0;
493 ioarcb->write_ioadl_len = 0;
494 ioarcb->read_ioadl_len = 0;
51b1c7e1
BK		 495 ioarcb->write_ioadl_addr =
496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 498 ioasa->ioasc = 0;
499 ioasa->residual_data_len = 0;
35a39691 500 ioasa->u.gata.status = 0;
1da177e4
LT		 501
502 ipr_cmd->scsi_cmd = NULL;
35a39691 503 ipr_cmd->qc = NULL;
1da177e4
LT		 504 ipr_cmd->sense_buffer[0] = 0;
505 ipr_cmd->dma_use_sg = 0;
506}
507
508/**
509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
510 * @ipr_cmd: ipr command struct
511 *
512 * Return value:
513 * none
514 **/
515static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
516{
517 ipr_reinit_ipr_cmnd(ipr_cmd);
518 ipr_cmd->u.scratch = 0;
519 ipr_cmd->sibling = NULL;
520 init_timer(&ipr_cmd->timer);
521}
522
523/**
524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
525 * @ioa_cfg: ioa config struct
526 *
527 * Return value:
528 * pointer to ipr command struct
529 **/
530static
531struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
532{
533 struct ipr_cmnd *ipr_cmd;
534
535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
536 list_del(&ipr_cmd->queue);
537 ipr_init_ipr_cmnd(ipr_cmd);
538
539 return ipr_cmd;
540}
541
1da177e4
LT		 542/**
543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
544 * @ioa_cfg: ioa config struct
545 * @clr_ints: interrupts to clear
546 *
547 * This function masks all interrupts on the adapter, then clears the
548 * interrupts specified in the mask
549 *
550 * Return value:
551 * none
552 **/
553static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
554 u32 clr_ints)
555{
556 volatile u32 int_reg;
557
558 /* Stop new interrupts */
559 ioa_cfg->allow_interrupts = 0;
560
561 /* Set interrupt mask to stop all new interrupts */
562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
563
564 /* Clear any pending interrupts */
565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
567}
568
569/**
570 * ipr_save_pcix_cmd_reg - Save PCI-X command register
571 * @ioa_cfg: ioa config struct
572 *
573 * Return value:
574 * 0 on success / -EIO on failure
575 **/
576static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
577{
578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
579
7dce0e1c
BK		 580 if (pcix_cmd_reg == 0)
581 return 0;
1da177e4
LT		 582
583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
590 return 0;
591}
592
593/**
594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
595 * @ioa_cfg: ioa config struct
596 *
597 * Return value:
598 * 0 on success / -EIO on failure
599 **/
600static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
601{
602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
603
604 if (pcix_cmd_reg) {
605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
608 return -EIO;
609 }
1da177e4
LT		 610 }
611
612 return 0;
613}
614
35a39691
BK		 615/**
616 * ipr_sata_eh_done - done function for aborted SATA commands
617 * @ipr_cmd: ipr command struct
618 *
619 * This function is invoked for ops generated to SATA
620 * devices which are being aborted.
621 *
622 * Return value:
623 * none
624 **/
625static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
626{
627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
628 struct ata_queued_cmd *qc = ipr_cmd->qc;
629 struct ipr_sata_port *sata_port = qc->ap->private_data;
630
631 qc->err_mask |= AC_ERR_OTHER;
632 sata_port->ioasa.status |= ATA_BUSY;
633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
634 ata_qc_complete(qc);
635}
636
1da177e4
LT		 637/**
638 * ipr_scsi_eh_done - mid-layer done function for aborted ops
639 * @ipr_cmd: ipr command struct
640 *
641 * This function is invoked by the interrupt handler for
642 * ops generated by the SCSI mid-layer which are being aborted.
643 *
644 * Return value:
645 * none
646 **/
647static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
648{
649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
651
652 scsi_cmd->result |= (DID_ERROR << 16);
653
63015bc9 654 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 655 scsi_cmd->scsi_done(scsi_cmd);
656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
657}
658
659/**
660 * ipr_fail_all_ops - Fails all outstanding ops.
661 * @ioa_cfg: ioa config struct
662 *
663 * This function fails all outstanding ops.
664 *
665 * Return value:
666 * none
667 **/
668static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
669{
670 struct ipr_cmnd *ipr_cmd, *temp;
671
672 ENTER;
673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
674 list_del(&ipr_cmd->queue);
675
676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
678
679 if (ipr_cmd->scsi_cmd)
680 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 681 else if (ipr_cmd->qc)
682 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 683
684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
685 del_timer(&ipr_cmd->timer);
686 ipr_cmd->done(ipr_cmd);
687 }
688
689 LEAVE;
690}
691
692/**
693 * ipr_do_req - Send driver initiated requests.
694 * @ipr_cmd: ipr command struct
695 * @done: done function
696 * @timeout_func: timeout function
697 * @timeout: timeout value
698 *
699 * This function sends the specified command to the adapter with the
700 * timeout given. The done function is invoked on command completion.
701 *
702 * Return value:
703 * none
704 **/
705static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
706 void (*done) (struct ipr_cmnd *),
707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
708{
709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
710
711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
712
713 ipr_cmd->done = done;
714
715 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
716 ipr_cmd->timer.expires = jiffies + timeout;
717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
718
719 add_timer(&ipr_cmd->timer);
720
721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
722
723 mb();
724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
725 ioa_cfg->regs.ioarrin_reg);
726}
727
728/**
729 * ipr_internal_cmd_done - Op done function for an internally generated op.
730 * @ipr_cmd: ipr command struct
731 *
732 * This function is the op done function for an internally generated,
733 * blocking op. It simply wakes the sleeping thread.
734 *
735 * Return value:
736 * none
737 **/
738static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
739{
740 if (ipr_cmd->sibling)
741 ipr_cmd->sibling = NULL;
742 else
743 complete(&ipr_cmd->completion);
744}
745
746/**
747 * ipr_send_blocking_cmd - Send command and sleep on its completion.
748 * @ipr_cmd: ipr command struct
749 * @timeout_func: function to invoke if command times out
750 * @timeout: timeout
751 *
752 * Return value:
753 * none
754 **/
755static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
757 u32 timeout)
758{
759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
760
761 init_completion(&ipr_cmd->completion);
762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
763
764 spin_unlock_irq(ioa_cfg->host->host_lock);
765 wait_for_completion(&ipr_cmd->completion);
766 spin_lock_irq(ioa_cfg->host->host_lock);
767}
768
769/**
770 * ipr_send_hcam - Send an HCAM to the adapter.
771 * @ioa_cfg: ioa config struct
772 * @type: HCAM type
773 * @hostrcb: hostrcb struct
774 *
775 * This function will send a Host Controlled Async command to the adapter.
776 * If HCAMs are currently not allowed to be issued to the adapter, it will
777 * place the hostrcb on the free queue.
778 *
779 * Return value:
780 * none
781 **/
782static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
783 struct ipr_hostrcb *hostrcb)
784{
785 struct ipr_cmnd *ipr_cmd;
786 struct ipr_ioarcb *ioarcb;
787
788 if (ioa_cfg->allow_cmds) {
789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
792
793 ipr_cmd->u.hostrcb = hostrcb;
794 ioarcb = &ipr_cmd->ioarcb;
795
796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
799 ioarcb->cmd_pkt.cdb[1] = type;
800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
802
803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
805 ipr_cmd->ioadl[0].flags_and_data_len =
806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
808
809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
810 ipr_cmd->done = ipr_process_ccn;
811 else
812 ipr_cmd->done = ipr_process_error;
813
814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
815
816 mb();
817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
818 ioa_cfg->regs.ioarrin_reg);
819 } else {
820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
821 }
822}
823
824/**
825 * ipr_init_res_entry - Initialize a resource entry struct.
826 * @res: resource entry struct
827 *
828 * Return value:
829 * none
830 **/
831static void ipr_init_res_entry(struct ipr_resource_entry *res)
832{
ee0a90fa 833 res->needs_sync_complete = 0;
1da177e4
LT		 834 res->in_erp = 0;
835 res->add_to_ml = 0;
836 res->del_from_ml = 0;
837 res->resetting_device = 0;
838 res->sdev = NULL;
35a39691 839 res->sata_port = NULL;
1da177e4
LT		 840}
841
842/**
843 * ipr_handle_config_change - Handle a config change from the adapter
844 * @ioa_cfg: ioa config struct
845 * @hostrcb: hostrcb
846 *
847 * Return value:
848 * none
849 **/
850static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
851 struct ipr_hostrcb *hostrcb)
852{
853 struct ipr_resource_entry *res = NULL;
854 struct ipr_config_table_entry *cfgte;
855 u32 is_ndn = 1;
856
857 cfgte = &hostrcb->hcam.u.ccn.cfgte;
858
859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
861 sizeof(cfgte->res_addr))) {
862 is_ndn = 0;
863 break;
864 }
865 }
866
867 if (is_ndn) {
868 if (list_empty(&ioa_cfg->free_res_q)) {
869 ipr_send_hcam(ioa_cfg,
870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
871 hostrcb);
872 return;
873 }
874
875 res = list_entry(ioa_cfg->free_res_q.next,
876 struct ipr_resource_entry, queue);
877
878 list_del(&res->queue);
879 ipr_init_res_entry(res);
880 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
881 }
882
883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
884
885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
886 if (res->sdev) {
1da177e4 887 res->del_from_ml = 1;
1121b794 888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 889 if (ioa_cfg->allow_ml_add_del)
890 schedule_work(&ioa_cfg->work_q);
891 } else
892 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
893 } else if (!res->sdev) {
894 res->add_to_ml = 1;
895 if (ioa_cfg->allow_ml_add_del)
896 schedule_work(&ioa_cfg->work_q);
897 }
898
899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
900}
901
902/**
903 * ipr_process_ccn - Op done function for a CCN.
904 * @ipr_cmd: ipr command struct
905 *
906 * This function is the op done function for a configuration
907 * change notification host controlled async from the adapter.
908 *
909 * Return value:
910 * none
911 **/
912static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
913{
914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
917
918 list_del(&hostrcb->queue);
919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
920
921 if (ioasc) {
922 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
923 dev_err(&ioa_cfg->pdev->dev,
924 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
925
926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
927 } else {
928 ipr_handle_config_change(ioa_cfg, hostrcb);
929 }
930}
931
8cf093e2
BK		 932/**
933 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
934 * @i: index into buffer
935 * @buf: string to modify
936 *
937 * This function will strip all trailing whitespace, pad the end
938 * of the string with a single space, and NULL terminate the string.
939 *
940 * Return value:
941 * new length of string
942 **/
943static int strip_and_pad_whitespace(int i, char *buf)
944{
945 while (i && buf[i] == ' ')
946 i--;
947 buf[i+1] = ' ';
948 buf[i+2] = '\0';
949 return i + 2;
950}
951
952/**
953 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
954 * @prefix: string to print at start of printk
955 * @hostrcb: hostrcb pointer
956 * @vpd: vendor/product id/sn struct
957 *
958 * Return value:
959 * none
960 **/
961static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
962 struct ipr_vpd *vpd)
963{
964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
965 int i = 0;
966
967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
969
970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
975
976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
977}
978
1da177e4
LT		 979/**
980 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 981 * @vpd: vendor/product id/sn struct
1da177e4
LT		 982 *
983 * Return value:
984 * none
985 **/
cfc32139 986static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 987{
988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
989 + IPR_SERIAL_NUM_LEN];
990
cfc32139
BK		 991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 993 IPR_PROD_ID_LEN);
994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
995 ipr_err("Vendor/Product ID: %s\n", buffer);
996
cfc32139 997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 998 buffer[IPR_SERIAL_NUM_LEN] = '\0';
999 ipr_err(" Serial Number: %s\n", buffer);
1000}
1001
8cf093e2
BK		 1002/**
1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1004 * @prefix: string to print at start of printk
1005 * @hostrcb: hostrcb pointer
1006 * @vpd: vendor/product id/sn/wwn struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1012 struct ipr_ext_vpd *vpd)
1013{
1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1017}
1018
ee0f05b8
BK		 1019/**
1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1021 * @vpd: vendor/product id/sn/wwn struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1027{
1028 ipr_log_vpd(&vpd->vpd);
1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1030 be32_to_cpu(vpd->wwid[1]));
1031}
1032
1033/**
1034 * ipr_log_enhanced_cache_error - Log a cache error.
1035 * @ioa_cfg: ioa config struct
1036 * @hostrcb: hostrcb struct
1037 *
1038 * Return value:
1039 * none
1040 **/
1041static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1042 struct ipr_hostrcb *hostrcb)
1043{
1044 struct ipr_hostrcb_type_12_error *error =
1045 &hostrcb->hcam.u.error.u.type_12_error;
1046
1047 ipr_err("-----Current Configuration-----\n");
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&error->ioa_vpd);
1050 ipr_err("Adapter Card Information:\n");
1051 ipr_log_ext_vpd(&error->cfc_vpd);
1052
1053 ipr_err("-----Expected Configuration-----\n");
1054 ipr_err("Cache Directory Card Information:\n");
1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1056 ipr_err("Adapter Card Information:\n");
1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1058
1059 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1060 be32_to_cpu(error->ioa_data[0]),
1061 be32_to_cpu(error->ioa_data[1]),
1062 be32_to_cpu(error->ioa_data[2]));
1063}
1064
1da177e4
LT		 1065/**
1066 * ipr_log_cache_error - Log a cache error.
1067 * @ioa_cfg: ioa config struct
1068 * @hostrcb: hostrcb struct
1069 *
1070 * Return value:
1071 * none
1072 **/
1073static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1074 struct ipr_hostrcb *hostrcb)
1075{
1076 struct ipr_hostrcb_type_02_error *error =
1077 &hostrcb->hcam.u.error.u.type_02_error;
1078
1079 ipr_err("-----Current Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
cfc32139 1081 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1082 ipr_err("Adapter Card Information:\n");
cfc32139 1083 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1084
1085 ipr_err("-----Expected Configuration-----\n");
1086 ipr_err("Cache Directory Card Information:\n");
cfc32139 1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1088 ipr_err("Adapter Card Information:\n");
cfc32139 1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1090
1091 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1092 be32_to_cpu(error->ioa_data[0]),
1093 be32_to_cpu(error->ioa_data[1]),
1094 be32_to_cpu(error->ioa_data[2]));
1095}
1096
ee0f05b8
BK		 1097/**
1098 * ipr_log_enhanced_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107{
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1110 struct ipr_hostrcb_type_13_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_13_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
1118 dev_entry = error->dev;
1119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1124 ipr_log_ext_vpd(&dev_entry->vpd);
1125
1126 ipr_err("-----New Device Information-----\n");
1127 ipr_log_ext_vpd(&dev_entry->new_vpd);
1128
1129 ipr_err("Cache Directory Card Information:\n");
1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1131
1132 ipr_err("Adapter Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1134 }
1135}
1136
1da177e4
LT		 1137/**
1138 * ipr_log_config_error - Log a configuration error.
1139 * @ioa_cfg: ioa config struct
1140 * @hostrcb: hostrcb struct
1141 *
1142 * Return value:
1143 * none
1144 **/
1145static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1146 struct ipr_hostrcb *hostrcb)
1147{
1148 int errors_logged, i;
1149 struct ipr_hostrcb_device_data_entry *dev_entry;
1150 struct ipr_hostrcb_type_03_error *error;
1151
1152 error = &hostrcb->hcam.u.error.u.type_03_error;
1153 errors_logged = be32_to_cpu(error->errors_logged);
1154
1155 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1156 be32_to_cpu(error->errors_detected), errors_logged);
1157
cfc32139 1158 dev_entry = error->dev;
1da177e4
LT		 1159
1160 for (i = 0; i < errors_logged; i++, dev_entry++) {
1161 ipr_err_separator;
1162
fa15b1f6 1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1164 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1165
1166 ipr_err("-----New Device Information-----\n");
cfc32139 1167 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1168
1169 ipr_err("Cache Directory Card Information:\n");
cfc32139 1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1171
1172 ipr_err("Adapter Card Information:\n");
cfc32139 1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1174
1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1176 be32_to_cpu(dev_entry->ioa_data[0]),
1177 be32_to_cpu(dev_entry->ioa_data[1]),
1178 be32_to_cpu(dev_entry->ioa_data[2]),
1179 be32_to_cpu(dev_entry->ioa_data[3]),
1180 be32_to_cpu(dev_entry->ioa_data[4]));
1181 }
1182}
1183
ee0f05b8
BK		 1184/**
1185 * ipr_log_enhanced_array_error - Log an array configuration error.
1186 * @ioa_cfg: ioa config struct
1187 * @hostrcb: hostrcb struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1193 struct ipr_hostrcb *hostrcb)
1194{
1195 int i, num_entries;
1196 struct ipr_hostrcb_type_14_error *error;
1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1199
1200 error = &hostrcb->hcam.u.error.u.type_14_error;
1201
1202 ipr_err_separator;
1203
1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1205 error->protection_level,
1206 ioa_cfg->host->host_no,
1207 error->last_func_vset_res_addr.bus,
1208 error->last_func_vset_res_addr.target,
1209 error->last_func_vset_res_addr.lun);
1210
1211 ipr_err_separator;
1212
1213 array_entry = error->array_member;
1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1215 sizeof(error->array_member));
1216
1217 for (i = 0; i < num_entries; i++, array_entry++) {
1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1219 continue;
1220
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1223 else
1224 ipr_err("Array Member %d:\n", i);
1225
1226 ipr_log_ext_vpd(&array_entry->vpd);
1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1229 "Expected Location");
1230
1231 ipr_err_separator;
1232 }
1233}
1234
1da177e4
LT		 1235/**
1236 * ipr_log_array_error - Log an array configuration error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245{
1246 int i;
1247 struct ipr_hostrcb_type_04_error *error;
1248 struct ipr_hostrcb_array_data_entry *array_entry;
1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1250
1251 error = &hostrcb->hcam.u.error.u.type_04_error;
1252
1253 ipr_err_separator;
1254
1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1256 error->protection_level,
1257 ioa_cfg->host->host_no,
1258 error->last_func_vset_res_addr.bus,
1259 error->last_func_vset_res_addr.target,
1260 error->last_func_vset_res_addr.lun);
1261
1262 ipr_err_separator;
1263
1264 array_entry = error->array_member;
1265
1266 for (i = 0; i < 18; i++) {
cfc32139 1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1268 continue;
1269
fa15b1f6 1270 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1271 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1272 else
1da177e4 1273 ipr_err("Array Member %d:\n", i);
1da177e4 1274
cfc32139 1275 ipr_log_vpd(&array_entry->vpd);
1da177e4 1276
fa15b1f6
BK		 1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1279 "Expected Location");
1da177e4
LT		 1280
1281 ipr_err_separator;
1282
1283 if (i == 9)
1284 array_entry = error->array_member2;
1285 else
1286 array_entry++;
1287 }
1288}
1289
1290/**
b0df54bb 1291 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1292 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1293 * @data: IOA error data
1294 * @len: data length
1da177e4
LT		 1295 *
1296 * Return value:
1297 * none
1298 **/
ac719aba 1299static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1300{
1301 int i;
1da177e4 1302
b0df54bb 1303 if (len == 0)
1da177e4
LT		 1304 return;
1305
ac719aba
BK		 1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1308
b0df54bb 1309 for (i = 0; i < len / 4; i += 4) {
1da177e4 1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1311 be32_to_cpu(data[i]),
1312 be32_to_cpu(data[i+1]),
1313 be32_to_cpu(data[i+2]),
1314 be32_to_cpu(data[i+3]));
1da177e4
LT		 1315 }
1316}
1317
ee0f05b8
BK		 1318/**
1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1320 * @ioa_cfg: ioa config struct
1321 * @hostrcb: hostrcb struct
1322 *
1323 * Return value:
1324 * none
1325 **/
1326static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1327 struct ipr_hostrcb *hostrcb)
1328{
1329 struct ipr_hostrcb_type_17_error *error;
1330
1331 error = &hostrcb->hcam.u.error.u.type_17_error;
1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1333 strstrip(error->failure_reason);
ee0f05b8 1334
8cf093e2
BK		 1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1336 be32_to_cpu(hostrcb->hcam.u.error.prc));
1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1338 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1339 be32_to_cpu(hostrcb->hcam.length) -
1340 (offsetof(struct ipr_hostrcb_error, u) +
1341 offsetof(struct ipr_hostrcb_type_17_error, data)));
1342}
1343
b0df54bb
BK		 1344/**
1345 * ipr_log_dual_ioa_error - Log a dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354{
1355 struct ipr_hostrcb_type_07_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_07_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1359 strstrip(error->failure_reason);
b0df54bb 1360
8cf093e2
BK		 1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1362 be32_to_cpu(hostrcb->hcam.u.error.prc));
1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1364 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_07_error, data)));
1368}
1369
49dc6a18
BK		 1370static const struct {
1371 u8 active;
1372 char *desc;
1373} path_active_desc[] = {
1374 { IPR_PATH_NO_INFO, "Path" },
1375 { IPR_PATH_ACTIVE, "Active path" },
1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1377};
1378
1379static const struct {
1380 u8 state;
1381 char *desc;
1382} path_state_desc[] = {
1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1384 { IPR_PATH_HEALTHY, "is healthy" },
1385 { IPR_PATH_DEGRADED, "is degraded" },
1386 { IPR_PATH_FAILED, "is failed" }
1387};
1388
1389/**
1390 * ipr_log_fabric_path - Log a fabric path error
1391 * @hostrcb: hostrcb struct
1392 * @fabric: fabric descriptor
1393 *
1394 * Return value:
1395 * none
1396 **/
1397static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1398 struct ipr_hostrcb_fabric_desc *fabric)
1399{
1400 int i, j;
1401 u8 path_state = fabric->path_state;
1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1403 u8 state = path_state & IPR_PATH_STATE_MASK;
1404
1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1406 if (path_active_desc[i].active != active)
1407 continue;
1408
1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1410 if (path_state_desc[j].state != state)
1411 continue;
1412
1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1415 path_active_desc[i].desc, path_state_desc[j].desc,
1416 fabric->ioa_port);
1417 } else if (fabric->cascaded_expander == 0xff) {
1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1419 path_active_desc[i].desc, path_state_desc[j].desc,
1420 fabric->ioa_port, fabric->phy);
1421 } else if (fabric->phy == 0xff) {
1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1423 path_active_desc[i].desc, path_state_desc[j].desc,
1424 fabric->ioa_port, fabric->cascaded_expander);
1425 } else {
1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1427 path_active_desc[i].desc, path_state_desc[j].desc,
1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1429 }
1430 return;
1431 }
1432 }
1433
1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1436}
1437
1438static const struct {
1439 u8 type;
1440 char *desc;
1441} path_type_desc[] = {
1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1446};
1447
1448static const struct {
1449 u8 status;
1450 char *desc;
1451} path_status_desc[] = {
1452 { IPR_PATH_CFG_NO_PROB, "Functional" },
1453 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1454 { IPR_PATH_CFG_FAILED, "Failed" },
1455 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1456 { IPR_PATH_NOT_DETECTED, "Missing" },
1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1458};
1459
1460static const char *link_rate[] = {
1461 "unknown",
1462 "disabled",
1463 "phy reset problem",
1464 "spinup hold",
1465 "port selector",
1466 "unknown",
1467 "unknown",
1468 "unknown",
1469 "1.5Gbps",
1470 "3.0Gbps",
1471 "unknown",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown"
1477};
1478
1479/**
1480 * ipr_log_path_elem - Log a fabric path element.
1481 * @hostrcb: hostrcb struct
1482 * @cfg: fabric path element struct
1483 *
1484 * Return value:
1485 * none
1486 **/
1487static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1488 struct ipr_hostrcb_config_element *cfg)
1489{
1490 int i, j;
1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1493
1494 if (type == IPR_PATH_CFG_NOT_EXIST)
1495 return;
1496
1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1498 if (path_type_desc[i].type != type)
1499 continue;
1500
1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1502 if (path_status_desc[j].status != status)
1503 continue;
1504
1505 if (type == IPR_PATH_CFG_IOA_PORT) {
1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1507 path_status_desc[j].desc, path_type_desc[i].desc,
1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1510 } else {
1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1513 path_status_desc[j].desc, path_type_desc[i].desc,
1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1516 } else if (cfg->cascaded_expander == 0xff) {
1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1518 "WWN=%08X%08X\n", path_status_desc[j].desc,
1519 path_type_desc[i].desc, cfg->phy,
1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1522 } else if (cfg->phy == 0xff) {
1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1524 "WWN=%08X%08X\n", path_status_desc[j].desc,
1525 path_type_desc[i].desc, cfg->cascaded_expander,
1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1528 } else {
1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1530 "WWN=%08X%08X\n", path_status_desc[j].desc,
1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1534 }
1535 }
1536 return;
1537 }
1538 }
1539
1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1544}
1545
1546/**
1547 * ipr_log_fabric_error - Log a fabric error.
1548 * @ioa_cfg: ioa config struct
1549 * @hostrcb: hostrcb struct
1550 *
1551 * Return value:
1552 * none
1553 **/
1554static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1555 struct ipr_hostrcb *hostrcb)
1556{
1557 struct ipr_hostrcb_type_20_error *error;
1558 struct ipr_hostrcb_fabric_desc *fabric;
1559 struct ipr_hostrcb_config_element *cfg;
1560 int i, add_len;
1561
1562 error = &hostrcb->hcam.u.error.u.type_20_error;
1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1565
1566 add_len = be32_to_cpu(hostrcb->hcam.length) -
1567 (offsetof(struct ipr_hostrcb_error, u) +
1568 offsetof(struct ipr_hostrcb_type_20_error, desc));
1569
1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1571 ipr_log_fabric_path(hostrcb, fabric);
1572 for_each_fabric_cfg(fabric, cfg)
1573 ipr_log_path_elem(hostrcb, cfg);
1574
1575 add_len -= be16_to_cpu(fabric->length);
1576 fabric = (struct ipr_hostrcb_fabric_desc *)
1577 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1578 }
1579
ac719aba 1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1581}
1582
b0df54bb
BK		 1583/**
1584 * ipr_log_generic_error - Log an adapter error.
1585 * @ioa_cfg: ioa config struct
1586 * @hostrcb: hostrcb struct
1587 *
1588 * Return value:
1589 * none
1590 **/
1591static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1592 struct ipr_hostrcb *hostrcb)
1593{
ac719aba 1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 1595 be32_to_cpu(hostrcb->hcam.length));
1596}
1597
1da177e4
LT		 1598/**
1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1600 * @ioasc: IOASC
1601 *
1602 * This function will return the index of into the ipr_error_table
1603 * for the specified IOASC. If the IOASC is not in the table,
1604 * 0 will be returned, which points to the entry used for unknown errors.
1605 *
1606 * Return value:
1607 * index into the ipr_error_table
1608 **/
1609static u32 ipr_get_error(u32 ioasc)
1610{
1611 int i;
1612
1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1615 return i;
1616
1617 return 0;
1618}
1619
1620/**
1621 * ipr_handle_log_data - Log an adapter error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * This function logs an adapter error to the system.
1626 *
1627 * Return value:
1628 * none
1629 **/
1630static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1631 struct ipr_hostrcb *hostrcb)
1632{
1633 u32 ioasc;
1634 int error_index;
1635
1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1637 return;
1638
1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1641
1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1643
1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1647 scsi_report_bus_reset(ioa_cfg->host,
1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1649 }
1650
1651 error_index = ipr_get_error(ioasc);
1652
1653 if (!ipr_error_table[error_index].log_hcam)
1654 return;
1655
49dc6a18 1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1657
1658 /* Set indication we have logged an error */
1659 ioa_cfg->errors_logged++;
1660
933916f3 1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1662 return;
cf852037
BK		 1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1665
1666 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1667 case IPR_HOST_RCB_OVERLAY_ID_2:
1668 ipr_log_cache_error(ioa_cfg, hostrcb);
1669 break;
1670 case IPR_HOST_RCB_OVERLAY_ID_3:
1671 ipr_log_config_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_4:
1674 case IPR_HOST_RCB_OVERLAY_ID_6:
1675 ipr_log_array_error(ioa_cfg, hostrcb);
1676 break;
b0df54bb
BK		 1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
ee0f05b8
BK		 1680 case IPR_HOST_RCB_OVERLAY_ID_12:
1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_13:
1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_14:
1687 case IPR_HOST_RCB_OVERLAY_ID_16:
1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1689 break;
1690 case IPR_HOST_RCB_OVERLAY_ID_17:
1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1692 break;
49dc6a18
BK		 1693 case IPR_HOST_RCB_OVERLAY_ID_20:
1694 ipr_log_fabric_error(ioa_cfg, hostrcb);
1695 break;
cf852037 1696 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1698 default:
a9cfca96 1699 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1700 break;
1701 }
1702}
1703
1704/**
1705 * ipr_process_error - Op done function for an adapter error log.
1706 * @ipr_cmd: ipr command struct
1707 *
1708 * This function is the op done function for an error log host
1709 * controlled async from the adapter. It will log the error and
1710 * send the HCAM back to the adapter.
1711 *
1712 * Return value:
1713 * none
1714 **/
1715static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1716{
1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1721
1722 list_del(&hostrcb->queue);
1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1724
1725 if (!ioasc) {
1726 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1730 dev_err(&ioa_cfg->pdev->dev,
1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1732 }
1733
1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1735}
1736
1737/**
1738 * ipr_timeout - An internally generated op has timed out.
1739 * @ipr_cmd: ipr command struct
1740 *
1741 * This function blocks host requests and initiates an
1742 * adapter reset.
1743 *
1744 * Return value:
1745 * none
1746 **/
1747static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1748{
1749 unsigned long lock_flags = 0;
1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1751
1752 ENTER;
1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1754
1755 ioa_cfg->errors_logged++;
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Adapter being reset due to command timeout.\n");
1758
1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1760 ioa_cfg->sdt_state = GET_DUMP;
1761
1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1764
1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1766 LEAVE;
1767}
1768
1769/**
1770 * ipr_oper_timeout - Adapter timed out transitioning to operational
1771 * @ipr_cmd: ipr command struct
1772 *
1773 * This function blocks host requests and initiates an
1774 * adapter reset.
1775 *
1776 * Return value:
1777 * none
1778 **/
1779static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1780{
1781 unsigned long lock_flags = 0;
1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1783
1784 ENTER;
1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1786
1787 ioa_cfg->errors_logged++;
1788 dev_err(&ioa_cfg->pdev->dev,
1789 "Adapter timed out transitioning to operational.\n");
1790
1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1792 ioa_cfg->sdt_state = GET_DUMP;
1793
1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1795 if (ipr_fastfail)
1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1798 }
1799
1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1801 LEAVE;
1802}
1803
1804/**
1805 * ipr_reset_reload - Reset/Reload the IOA
1806 * @ioa_cfg: ioa config struct
1807 * @shutdown_type: shutdown type
1808 *
1809 * This function resets the adapter and re-initializes it.
1810 * This function assumes that all new host commands have been stopped.
1811 * Return value:
1812 * SUCCESS / FAILED
1813 **/
1814static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1815 enum ipr_shutdown_type shutdown_type)
1816{
1817 if (!ioa_cfg->in_reset_reload)
1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1819
1820 spin_unlock_irq(ioa_cfg->host->host_lock);
1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1822 spin_lock_irq(ioa_cfg->host->host_lock);
1823
1824 /* If we got hit with a host reset while we were already resetting
1825 the adapter for some reason, and the reset failed. */
1826 if (ioa_cfg->ioa_is_dead) {
1827 ipr_trace;
1828 return FAILED;
1829 }
1830
1831 return SUCCESS;
1832}
1833
1834/**
1835 * ipr_find_ses_entry - Find matching SES in SES table
1836 * @res: resource entry struct of SES
1837 *
1838 * Return value:
1839 * pointer to SES table entry / NULL on failure
1840 **/
1841static const struct ipr_ses_table_entry *
1842ipr_find_ses_entry(struct ipr_resource_entry *res)
1843{
1844 int i, j, matches;
1845 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1846
1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1849 if (ste->compare_product_id_byte[j] == 'X') {
1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1851 matches++;
1852 else
1853 break;
1854 } else
1855 matches++;
1856 }
1857
1858 if (matches == IPR_PROD_ID_LEN)
1859 return ste;
1860 }
1861
1862 return NULL;
1863}
1864
1865/**
1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1867 * @ioa_cfg: ioa config struct
1868 * @bus: SCSI bus
1869 * @bus_width: bus width
1870 *
1871 * Return value:
1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1874 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1875 * max 160MHz = max 320MB/sec).
1876 **/
1877static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1878{
1879 struct ipr_resource_entry *res;
1880 const struct ipr_ses_table_entry *ste;
1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1882
1883 /* Loop through each config table entry in the config table buffer */
1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1886 continue;
1887
1888 if (bus != res->cfgte.res_addr.bus)
1889 continue;
1890
1891 if (!(ste = ipr_find_ses_entry(res)))
1892 continue;
1893
1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1895 }
1896
1897 return max_xfer_rate;
1898}
1899
1900/**
1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1902 * @ioa_cfg: ioa config struct
1903 * @max_delay: max delay in micro-seconds to wait
1904 *
1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1906 *
1907 * Return value:
1908 * 0 on success / other on failure
1909 **/
1910static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1911{
1912 volatile u32 pcii_reg;
1913 int delay = 1;
1914
1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1916 while (delay < max_delay) {
1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1918
1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1920 return 0;
1921
1922 /* udelay cannot be used if delay is more than a few milliseconds */
1923 if ((delay / 1000) > MAX_UDELAY_MS)
1924 mdelay(delay / 1000);
1925 else
1926 udelay(delay);
1927
1928 delay += delay;
1929 }
1930 return -EIO;
1931}
1932
1933/**
1934 * ipr_get_ldump_data_section - Dump IOA memory
1935 * @ioa_cfg: ioa config struct
1936 * @start_addr: adapter address to dump
1937 * @dest: destination kernel buffer
1938 * @length_in_words: length to dump in 4 byte words
1939 *
1940 * Return value:
1941 * 0 on success / -EIO on failure
1942 **/
1943static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1944 u32 start_addr,
1945 __be32 *dest, u32 length_in_words)
1946{
1947 volatile u32 temp_pcii_reg;
1948 int i, delay = 0;
1949
1950 /* Write IOA interrupt reg starting LDUMP state */
1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1952 ioa_cfg->regs.set_uproc_interrupt_reg);
1953
1954 /* Wait for IO debug acknowledge */
1955 if (ipr_wait_iodbg_ack(ioa_cfg,
1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1957 dev_err(&ioa_cfg->pdev->dev,
1958 "IOA dump long data transfer timeout\n");
1959 return -EIO;
1960 }
1961
1962 /* Signal LDUMP interlocked - clear IO debug ack */
1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1964 ioa_cfg->regs.clr_interrupt_reg);
1965
1966 /* Write Mailbox with starting address */
1967 writel(start_addr, ioa_cfg->ioa_mailbox);
1968
1969 /* Signal address valid - clear IOA Reset alert */
1970 writel(IPR_UPROCI_RESET_ALERT,
1971 ioa_cfg->regs.clr_uproc_interrupt_reg);
1972
1973 for (i = 0; i < length_in_words; i++) {
1974 /* Wait for IO debug acknowledge */
1975 if (ipr_wait_iodbg_ack(ioa_cfg,
1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1977 dev_err(&ioa_cfg->pdev->dev,
1978 "IOA dump short data transfer timeout\n");
1979 return -EIO;
1980 }
1981
1982 /* Read data from mailbox and increment destination pointer */
1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1984 dest++;
1985
1986 /* For all but the last word of data, signal data received */
1987 if (i < (length_in_words - 1)) {
1988 /* Signal dump data received - Clear IO debug Ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991 }
1992 }
1993
1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1995 writel(IPR_UPROCI_RESET_ALERT,
1996 ioa_cfg->regs.set_uproc_interrupt_reg);
1997
1998 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1999 ioa_cfg->regs.clr_uproc_interrupt_reg);
2000
2001 /* Signal dump data received - Clear IO debug Ack */
2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2003 ioa_cfg->regs.clr_interrupt_reg);
2004
2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2007 temp_pcii_reg =
2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2009
2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2011 return 0;
2012
2013 udelay(10);
2014 delay += 10;
2015 }
2016
2017 return 0;
2018}
2019
2020#ifdef CONFIG_SCSI_IPR_DUMP
2021/**
2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2023 * @ioa_cfg: ioa config struct
2024 * @pci_address: adapter address
2025 * @length: length of data to copy
2026 *
2027 * Copy data from PCI adapter to kernel buffer.
2028 * Note: length MUST be a 4 byte multiple
2029 * Return value:
2030 * 0 on success / other on failure
2031 **/
2032static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2033 unsigned long pci_address, u32 length)
2034{
2035 int bytes_copied = 0;
2036 int cur_len, rc, rem_len, rem_page_len;
2037 __be32 *page;
2038 unsigned long lock_flags = 0;
2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2040
2041 while (bytes_copied < length &&
2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2043 if (ioa_dump->page_offset >= PAGE_SIZE ||
2044 ioa_dump->page_offset == 0) {
2045 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2046
2047 if (!page) {
2048 ipr_trace;
2049 return bytes_copied;
2050 }
2051
2052 ioa_dump->page_offset = 0;
2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2054 ioa_dump->next_page_index++;
2055 } else
2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2057
2058 rem_len = length - bytes_copied;
2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2060 cur_len = min(rem_len, rem_page_len);
2061
2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2063 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2064 rc = -EIO;
2065 } else {
2066 rc = ipr_get_ldump_data_section(ioa_cfg,
2067 pci_address + bytes_copied,
2068 &page[ioa_dump->page_offset / 4],
2069 (cur_len / sizeof(u32)));
2070 }
2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2072
2073 if (!rc) {
2074 ioa_dump->page_offset += cur_len;
2075 bytes_copied += cur_len;
2076 } else {
2077 ipr_trace;
2078 break;
2079 }
2080 schedule();
2081 }
2082
2083 return bytes_copied;
2084}
2085
2086/**
2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2088 * @hdr: dump entry header struct
2089 *
2090 * Return value:
2091 * nothing
2092 **/
2093static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2094{
2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2096 hdr->num_elems = 1;
2097 hdr->offset = sizeof(*hdr);
2098 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2099}
2100
2101/**
2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2103 * @ioa_cfg: ioa config struct
2104 * @driver_dump: driver dump struct
2105 *
2106 * Return value:
2107 * nothing
2108 **/
2109static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2110 struct ipr_driver_dump *driver_dump)
2111{
2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2113
2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2115 driver_dump->ioa_type_entry.hdr.len =
2116 sizeof(struct ipr_dump_ioa_type_entry) -
2117 sizeof(struct ipr_dump_entry_header);
2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2120 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2123 ucode_vpd->minor_release[1];
2124 driver_dump->hdr.num_entries++;
2125}
2126
2127/**
2128 * ipr_dump_version_data - Fill in the driver version in the dump.
2129 * @ioa_cfg: ioa config struct
2130 * @driver_dump: driver dump struct
2131 *
2132 * Return value:
2133 * nothing
2134 **/
2135static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137{
2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2139 driver_dump->version_entry.hdr.len =
2140 sizeof(struct ipr_dump_version_entry) -
2141 sizeof(struct ipr_dump_entry_header);
2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2145 driver_dump->hdr.num_entries++;
2146}
2147
2148/**
2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2150 * @ioa_cfg: ioa config struct
2151 * @driver_dump: driver dump struct
2152 *
2153 * Return value:
2154 * nothing
2155 **/
2156static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2157 struct ipr_driver_dump *driver_dump)
2158{
2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2160 driver_dump->trace_entry.hdr.len =
2161 sizeof(struct ipr_dump_trace_entry) -
2162 sizeof(struct ipr_dump_entry_header);
2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2166 driver_dump->hdr.num_entries++;
2167}
2168
2169/**
2170 * ipr_dump_location_data - Fill in the IOA location in the dump.
2171 * @ioa_cfg: ioa config struct
2172 * @driver_dump: driver dump struct
2173 *
2174 * Return value:
2175 * nothing
2176 **/
2177static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2178 struct ipr_driver_dump *driver_dump)
2179{
2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2181 driver_dump->location_entry.hdr.len =
2182 sizeof(struct ipr_dump_location_entry) -
2183 sizeof(struct ipr_dump_entry_header);
2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2187 driver_dump->hdr.num_entries++;
2188}
2189
2190/**
2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2192 * @ioa_cfg: ioa config struct
2193 * @dump: dump struct
2194 *
2195 * Return value:
2196 * nothing
2197 **/
2198static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2199{
2200 unsigned long start_addr, sdt_word;
2201 unsigned long lock_flags = 0;
2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2204 u32 num_entries, start_off, end_off;
2205 u32 bytes_to_copy, bytes_copied, rc;
2206 struct ipr_sdt *sdt;
2207 int i;
2208
2209 ENTER;
2210
2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2212
2213 if (ioa_cfg->sdt_state != GET_DUMP) {
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return;
2216 }
2217
2218 start_addr = readl(ioa_cfg->ioa_mailbox);
2219
2220 if (!ipr_sdt_is_fmt2(start_addr)) {
2221 dev_err(&ioa_cfg->pdev->dev,
2222 "Invalid dump table format: %lx\n", start_addr);
2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2224 return;
2225 }
2226
2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2228
2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2230
2231 /* Initialize the overall dump header */
2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2233 driver_dump->hdr.num_entries = 1;
2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2238
2239 ipr_dump_version_data(ioa_cfg, driver_dump);
2240 ipr_dump_location_data(ioa_cfg, driver_dump);
2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2242 ipr_dump_trace_data(ioa_cfg, driver_dump);
2243
2244 /* Update dump_header */
2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2246
2247 /* IOA Dump entry */
2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2249 ioa_dump->format = IPR_SDT_FMT2;
2250 ioa_dump->hdr.len = 0;
2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2253
2254 /* First entries in sdt are actually a list of dump addresses and
2255 lengths to gather the real dump data. sdt represents the pointer
2256 to the ioa generated dump table. Dump data will be extracted based
2257 on entries in this table */
2258 sdt = &ioa_dump->sdt;
2259
2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2261 sizeof(struct ipr_sdt) / sizeof(__be32));
2262
2263 /* Smart Dump table is ready to use and the first entry is valid */
2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2265 dev_err(&ioa_cfg->pdev->dev,
2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2267 rc, be32_to_cpu(sdt->hdr.state));
2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2269 ioa_cfg->sdt_state = DUMP_OBTAINED;
2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2271 return;
2272 }
2273
2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2275
2276 if (num_entries > IPR_NUM_SDT_ENTRIES)
2277 num_entries = IPR_NUM_SDT_ENTRIES;
2278
2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2280
2281 for (i = 0; i < num_entries; i++) {
2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2284 break;
2285 }
2286
2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2290 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2291
2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2293 bytes_to_copy = end_off - start_off;
2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2296 continue;
2297 }
2298
2299 /* Copy data from adapter to driver buffers */
2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2301 bytes_to_copy);
2302
2303 ioa_dump->hdr.len += bytes_copied;
2304
2305 if (bytes_copied != bytes_to_copy) {
2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2307 break;
2308 }
2309 }
2310 }
2311 }
2312
2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2314
2315 /* Update dump_header */
2316 driver_dump->hdr.len += ioa_dump->hdr.len;
2317 wmb();
2318 ioa_cfg->sdt_state = DUMP_OBTAINED;
2319 LEAVE;
2320}
2321
2322#else
2323#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2324#endif
2325
2326/**
2327 * ipr_release_dump - Free adapter dump memory
2328 * @kref: kref struct
2329 *
2330 * Return value:
2331 * nothing
2332 **/
2333static void ipr_release_dump(struct kref *kref)
2334{
2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2337 unsigned long lock_flags = 0;
2338 int i;
2339
2340 ENTER;
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 ioa_cfg->dump = NULL;
2343 ioa_cfg->sdt_state = INACTIVE;
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345
2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2348
2349 kfree(dump);
2350 LEAVE;
2351}
2352
2353/**
2354 * ipr_worker_thread - Worker thread
c4028958 2355 * @work: ioa config struct
1da177e4
LT		 2356 *
2357 * Called at task level from a work thread. This function takes care
2358 * of adding and removing device from the mid-layer as configuration
2359 * changes are detected by the adapter.
2360 *
2361 * Return value:
2362 * nothing
2363 **/
c4028958 2364static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2365{
2366 unsigned long lock_flags;
2367 struct ipr_resource_entry *res;
2368 struct scsi_device *sdev;
2369 struct ipr_dump *dump;
c4028958
DH		 2370 struct ipr_ioa_cfg *ioa_cfg =
2371 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2372 u8 bus, target, lun;
2373 int did_work;
2374
2375 ENTER;
2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2377
2378 if (ioa_cfg->sdt_state == GET_DUMP) {
2379 dump = ioa_cfg->dump;
2380 if (!dump) {
2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2382 return;
2383 }
2384 kref_get(&dump->kref);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 ipr_get_ioa_dump(ioa_cfg, dump);
2387 kref_put(&dump->kref, ipr_release_dump);
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2393 return;
2394 }
2395
2396restart:
2397 do {
2398 did_work = 0;
2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 return;
2402 }
2403
2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2405 if (res->del_from_ml && res->sdev) {
2406 did_work = 1;
2407 sdev = res->sdev;
2408 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2411 scsi_remove_device(sdev);
2412 scsi_device_put(sdev);
2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2414 }
2415 break;
2416 }
2417 }
2418 } while(did_work);
2419
2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2421 if (res->add_to_ml) {
2422 bus = res->cfgte.res_addr.bus;
2423 target = res->cfgte.res_addr.target;
2424 lun = res->cfgte.res_addr.lun;
1121b794 2425 res->add_to_ml = 0;
1da177e4
LT		 2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 scsi_add_device(ioa_cfg->host, bus, target, lun);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 goto restart;
2430 }
2431 }
2432
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
ee959b00 2434 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2435 LEAVE;
2436}
2437
2438#ifdef CONFIG_SCSI_IPR_TRACE
2439/**
2440 * ipr_read_trace - Dump the adapter trace
2441 * @kobj: kobject struct
91a69029 2442 * @bin_attr: bin_attribute struct
1da177e4
LT		 2443 * @buf: buffer
2444 * @off: offset
2445 * @count: buffer size
2446 *
2447 * Return value:
2448 * number of bytes printed to buffer
2449 **/
91a69029
ZR		 2450static ssize_t ipr_read_trace(struct kobject *kobj,
2451 struct bin_attribute *bin_attr,
2452 char *buf, loff_t off, size_t count)
1da177e4 2453{
ee959b00
TJ		 2454 struct device *dev = container_of(kobj, struct device, kobj);
2455 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2457 unsigned long lock_flags = 0;
2458 int size = IPR_TRACE_SIZE;
2459 char *src = (char *)ioa_cfg->trace;
2460
2461 if (off > size)
2462 return 0;
2463 if (off + count > size) {
2464 size -= off;
2465 count = size;
2466 }
2467
2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2469 memcpy(buf, &src[off], count);
2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 return count;
2472}
2473
2474static struct bin_attribute ipr_trace_attr = {
2475 .attr = {
2476 .name = "trace",
2477 .mode = S_IRUGO,
2478 },
2479 .size = 0,
2480 .read = ipr_read_trace,
2481};
2482#endif
2483
62275040
BK		 2484static const struct {
2485 enum ipr_cache_state state;
2486 char *name;
2487} cache_state [] = {
2488 { CACHE_NONE, "none" },
2489 { CACHE_DISABLED, "disabled" },
2490 { CACHE_ENABLED, "enabled" }
2491};
2492
2493/**
2494 * ipr_show_write_caching - Show the write caching attribute
ee959b00
TJ		 2495 * @dev: device struct
2496 * @buf: buffer
62275040
BK		 2497 *
2498 * Return value:
2499 * number of bytes printed to buffer
2500 **/
ee959b00
TJ		 2501static ssize_t ipr_show_write_caching(struct device *dev,
2502 struct device_attribute *attr, char *buf)
62275040 2503{
ee959b00 2504 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2505 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2506 unsigned long lock_flags = 0;
2507 int i, len = 0;
2508
2509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2510 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2511 if (cache_state[i].state == ioa_cfg->cache_state) {
2512 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2513 break;
2514 }
2515 }
2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2517 return len;
2518}
2519
2520
2521/**
2522 * ipr_store_write_caching - Enable/disable adapter write cache
ee959b00
TJ		 2523 * @dev: device struct
2524 * @buf: buffer
2525 * @count: buffer size
62275040
BK		 2526 *
2527 * This function will enable/disable adapter write cache.
2528 *
2529 * Return value:
2530 * count on success / other on failure
2531 **/
ee959b00
TJ		 2532static ssize_t ipr_store_write_caching(struct device *dev,
2533 struct device_attribute *attr,
2534 const char *buf, size_t count)
62275040 2535{
ee959b00 2536 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2538 unsigned long lock_flags = 0;
2539 enum ipr_cache_state new_state = CACHE_INVALID;
2540 int i;
2541
2542 if (!capable(CAP_SYS_ADMIN))
2543 return -EACCES;
2544 if (ioa_cfg->cache_state == CACHE_NONE)
2545 return -EINVAL;
2546
2547 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2548 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2549 new_state = cache_state[i].state;
2550 break;
2551 }
2552 }
2553
2554 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2555 return -EINVAL;
2556
2557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2558 if (ioa_cfg->cache_state == new_state) {
2559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2560 return count;
2561 }
2562
2563 ioa_cfg->cache_state = new_state;
2564 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2565 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2566 if (!ioa_cfg->in_reset_reload)
2567 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2570
2571 return count;
2572}
2573
ee959b00 2574static struct device_attribute ipr_ioa_cache_attr = {
62275040
BK		 2575 .attr = {
2576 .name = "write_cache",
2577 .mode = S_IRUGO | S_IWUSR,
2578 },
2579 .show = ipr_show_write_caching,
2580 .store = ipr_store_write_caching
2581};
2582
1da177e4
LT		 2583/**
2584 * ipr_show_fw_version - Show the firmware version
ee959b00
TJ		 2585 * @dev: class device struct
2586 * @buf: buffer
1da177e4
LT		 2587 *
2588 * Return value:
2589 * number of bytes printed to buffer
2590 **/
ee959b00
TJ		 2591static ssize_t ipr_show_fw_version(struct device *dev,
2592 struct device_attribute *attr, char *buf)
1da177e4 2593{
ee959b00 2594 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2595 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2596 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2597 unsigned long lock_flags = 0;
2598 int len;
2599
2600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2601 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2602 ucode_vpd->major_release, ucode_vpd->card_type,
2603 ucode_vpd->minor_release[0],
2604 ucode_vpd->minor_release[1]);
2605 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2606 return len;
2607}
2608
ee959b00 2609static struct device_attribute ipr_fw_version_attr = {
1da177e4
LT		 2610 .attr = {
2611 .name = "fw_version",
2612 .mode = S_IRUGO,
2613 },
2614 .show = ipr_show_fw_version,
2615};
2616
2617/**
2618 * ipr_show_log_level - Show the adapter's error logging level
ee959b00
TJ		 2619 * @dev: class device struct
2620 * @buf: buffer
1da177e4
LT		 2621 *
2622 * Return value:
2623 * number of bytes printed to buffer
2624 **/
ee959b00
TJ		 2625static ssize_t ipr_show_log_level(struct device *dev,
2626 struct device_attribute *attr, char *buf)
1da177e4 2627{
ee959b00 2628 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2629 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2630 unsigned long lock_flags = 0;
2631 int len;
2632
2633 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2634 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2635 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2636 return len;
2637}
2638
2639/**
2640 * ipr_store_log_level - Change the adapter's error logging level
ee959b00
TJ		 2641 * @dev: class device struct
2642 * @buf: buffer
1da177e4
LT		 2643 *
2644 * Return value:
2645 * number of bytes printed to buffer
2646 **/
ee959b00
TJ		 2647static ssize_t ipr_store_log_level(struct device *dev,
2648 struct device_attribute *attr,
1da177e4
LT		 2649 const char *buf, size_t count)
2650{
ee959b00 2651 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2652 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2653 unsigned long lock_flags = 0;
2654
2655 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2656 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2657 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2658 return strlen(buf);
2659}
2660
ee959b00 2661static struct device_attribute ipr_log_level_attr = {
1da177e4
LT		 2662 .attr = {
2663 .name = "log_level",
2664 .mode = S_IRUGO | S_IWUSR,
2665 },
2666 .show = ipr_show_log_level,
2667 .store = ipr_store_log_level
2668};
2669
2670/**
2671 * ipr_store_diagnostics - IOA Diagnostics interface
ee959b00
TJ		 2672 * @dev: device struct
2673 * @buf: buffer
2674 * @count: buffer size
1da177e4
LT		 2675 *
2676 * This function will reset the adapter and wait a reasonable
2677 * amount of time for any errors that the adapter might log.
2678 *
2679 * Return value:
2680 * count on success / other on failure
2681 **/
ee959b00
TJ		 2682static ssize_t ipr_store_diagnostics(struct device *dev,
2683 struct device_attribute *attr,
1da177e4
LT		 2684 const char *buf, size_t count)
2685{
ee959b00 2686 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2687 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2688 unsigned long lock_flags = 0;
2689 int rc = count;
2690
2691 if (!capable(CAP_SYS_ADMIN))
2692 return -EACCES;
2693
1da177e4 2694 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2695 while(ioa_cfg->in_reset_reload) {
2696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2697 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2698 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2699 }
2700
1da177e4
LT		 2701 ioa_cfg->errors_logged = 0;
2702 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2703
2704 if (ioa_cfg->in_reset_reload) {
2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2706 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2707
2708 /* Wait for a second for any errors to be logged */
2709 msleep(1000);
2710 } else {
2711 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2712 return -EIO;
2713 }
2714
2715 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2716 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2717 rc = -EIO;
2718 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2719
2720 return rc;
2721}
2722
ee959b00 2723static struct device_attribute ipr_diagnostics_attr = {
1da177e4
LT		 2724 .attr = {
2725 .name = "run_diagnostics",
2726 .mode = S_IWUSR,
2727 },
2728 .store = ipr_store_diagnostics
2729};
2730
f37eb54b
BK		 2731/**
2732 * ipr_show_adapter_state - Show the adapter's state
ee959b00
TJ		 2733 * @class_dev: device struct
2734 * @buf: buffer
f37eb54b
BK		 2735 *
2736 * Return value:
2737 * number of bytes printed to buffer
2738 **/
ee959b00
TJ		 2739static ssize_t ipr_show_adapter_state(struct device *dev,
2740 struct device_attribute *attr, char *buf)
f37eb54b 2741{
ee959b00 2742 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2743 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2744 unsigned long lock_flags = 0;
2745 int len;
2746
2747 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2748 if (ioa_cfg->ioa_is_dead)
2749 len = snprintf(buf, PAGE_SIZE, "offline\n");
2750 else
2751 len = snprintf(buf, PAGE_SIZE, "online\n");
2752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2753 return len;
2754}
2755
2756/**
2757 * ipr_store_adapter_state - Change adapter state
ee959b00
TJ		 2758 * @dev: device struct
2759 * @buf: buffer
2760 * @count: buffer size
f37eb54b
BK		 2761 *
2762 * This function will change the adapter's state.
2763 *
2764 * Return value:
2765 * count on success / other on failure
2766 **/
ee959b00
TJ		 2767static ssize_t ipr_store_adapter_state(struct device *dev,
2768 struct device_attribute *attr,
f37eb54b
BK		 2769 const char *buf, size_t count)
2770{
ee959b00 2771 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2772 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2773 unsigned long lock_flags;
2774 int result = count;
2775
2776 if (!capable(CAP_SYS_ADMIN))
2777 return -EACCES;
2778
2779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2780 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2781 ioa_cfg->ioa_is_dead = 0;
2782 ioa_cfg->reset_retries = 0;
2783 ioa_cfg->in_ioa_bringdown = 0;
2784 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2785 }
2786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2788
2789 return result;
2790}
2791
ee959b00 2792static struct device_attribute ipr_ioa_state_attr = {
f37eb54b
BK		 2793 .attr = {
2794 .name = "state",
2795 .mode = S_IRUGO | S_IWUSR,
2796 },
2797 .show = ipr_show_adapter_state,
2798 .store = ipr_store_adapter_state
2799};
2800
1da177e4
LT		 2801/**
2802 * ipr_store_reset_adapter - Reset the adapter
ee959b00
TJ		 2803 * @dev: device struct
2804 * @buf: buffer
2805 * @count: buffer size
1da177e4
LT		 2806 *
2807 * This function will reset the adapter.
2808 *
2809 * Return value:
2810 * count on success / other on failure
2811 **/
ee959b00
TJ		 2812static ssize_t ipr_store_reset_adapter(struct device *dev,
2813 struct device_attribute *attr,
1da177e4
LT		 2814 const char *buf, size_t count)
2815{
ee959b00 2816 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2817 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2818 unsigned long lock_flags;
2819 int result = count;
2820
2821 if (!capable(CAP_SYS_ADMIN))
2822 return -EACCES;
2823
2824 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2825 if (!ioa_cfg->in_reset_reload)
2826 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2827 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2828 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2829
2830 return result;
2831}
2832
ee959b00 2833static struct device_attribute ipr_ioa_reset_attr = {
1da177e4
LT		 2834 .attr = {
2835 .name = "reset_host",
2836 .mode = S_IWUSR,
2837 },
2838 .store = ipr_store_reset_adapter
2839};
2840
2841/**
2842 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2843 * @buf_len: buffer length
2844 *
2845 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2846 * list to use for microcode download
2847 *
2848 * Return value:
2849 * pointer to sglist / NULL on failure
2850 **/
2851static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2852{
2853 int sg_size, order, bsize_elem, num_elem, i, j;
2854 struct ipr_sglist *sglist;
2855 struct scatterlist *scatterlist;
2856 struct page *page;
2857
2858 /* Get the minimum size per scatter/gather element */
2859 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2860
2861 /* Get the actual size per element */
2862 order = get_order(sg_size);
2863
2864 /* Determine the actual number of bytes per element */
2865 bsize_elem = PAGE_SIZE * (1 << order);
2866
2867 /* Determine the actual number of sg entries needed */
2868 if (buf_len % bsize_elem)
2869 num_elem = (buf_len / bsize_elem) + 1;
2870 else
2871 num_elem = buf_len / bsize_elem;
2872
2873 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2874 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2875 (sizeof(struct scatterlist) * (num_elem - 1)),
2876 GFP_KERNEL);
2877
2878 if (sglist == NULL) {
2879 ipr_trace;
2880 return NULL;
2881 }
2882
1da177e4 2883 scatterlist = sglist->scatterlist;
45711f1a 2884 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 2885
2886 sglist->order = order;
2887 sglist->num_sg = num_elem;
2888
2889 /* Allocate a bunch of sg elements */
2890 for (i = 0; i < num_elem; i++) {
2891 page = alloc_pages(GFP_KERNEL, order);
2892 if (!page) {
2893 ipr_trace;
2894
2895 /* Free up what we already allocated */
2896 for (j = i - 1; j >= 0; j--)
45711f1a 2897 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 2898 kfree(sglist);
2899 return NULL;
2900 }
2901
642f1490 2902 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 2903 }
2904
2905 return sglist;
2906}
2907
2908/**
2909 * ipr_free_ucode_buffer - Frees a microcode download buffer
2910 * @p_dnld: scatter/gather list pointer
2911 *
2912 * Free a DMA'able ucode download buffer previously allocated with
2913 * ipr_alloc_ucode_buffer
2914 *
2915 * Return value:
2916 * nothing
2917 **/
2918static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2919{
2920 int i;
2921
2922 for (i = 0; i < sglist->num_sg; i++)
45711f1a 2923 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 2924
2925 kfree(sglist);
2926}
2927
2928/**
2929 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2930 * @sglist: scatter/gather list pointer
2931 * @buffer: buffer pointer
2932 * @len: buffer length
2933 *
2934 * Copy a microcode image from a user buffer into a buffer allocated by
2935 * ipr_alloc_ucode_buffer
2936 *
2937 * Return value:
2938 * 0 on success / other on failure
2939 **/
2940static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2941 u8 *buffer, u32 len)
2942{
2943 int bsize_elem, i, result = 0;
2944 struct scatterlist *scatterlist;
2945 void *kaddr;
2946
2947 /* Determine the actual number of bytes per element */
2948 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2949
2950 scatterlist = sglist->scatterlist;
2951
2952 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 2953 struct page *page = sg_page(&scatterlist[i]);
2954
2955 kaddr = kmap(page);
1da177e4 2956 memcpy(kaddr, buffer, bsize_elem);
45711f1a 2957 kunmap(page);
1da177e4
LT		 2958
2959 scatterlist[i].length = bsize_elem;
2960
2961 if (result != 0) {
2962 ipr_trace;
2963 return result;
2964 }
2965 }
2966
2967 if (len % bsize_elem) {
45711f1a
JA		 2968 struct page *page = sg_page(&scatterlist[i]);
2969
2970 kaddr = kmap(page);
1da177e4 2971 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 2972 kunmap(page);
1da177e4
LT		 2973
2974 scatterlist[i].length = len % bsize_elem;
2975 }
2976
2977 sglist->buffer_len = len;
2978 return result;
2979}
2980
2981/**
12baa420 2982 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2983 * @ipr_cmd: ipr command struct
2984 * @sglist: scatter/gather list
1da177e4 2985 *
12baa420 2986 * Builds a microcode download IOA data list (IOADL).
1da177e4 2987 *
1da177e4 2988 **/
12baa420
BK		 2989static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2990 struct ipr_sglist *sglist)
1da177e4 2991{
1da177e4
LT		 2992 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2993 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2994 struct scatterlist *scatterlist = sglist->scatterlist;
2995 int i;
2996
12baa420 2997 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2998 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2999 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 3000 ioarcb->write_ioadl_len =
3001 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3002
3003 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3004 ioadl[i].flags_and_data_len =
3005 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3006 ioadl[i].address =
3007 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3008 }
3009
12baa420
BK		 3010 ioadl[i-1].flags_and_data_len |=
3011 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3012}
3013
3014/**
3015 * ipr_update_ioa_ucode - Update IOA's microcode
3016 * @ioa_cfg: ioa config struct
3017 * @sglist: scatter/gather list
3018 *
3019 * Initiate an adapter reset to update the IOA's microcode
3020 *
3021 * Return value:
3022 * 0 on success / -EIO on failure
3023 **/
3024static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3025 struct ipr_sglist *sglist)
3026{
3027 unsigned long lock_flags;
3028
3029 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3030 while(ioa_cfg->in_reset_reload) {
3031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3032 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3033 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3034 }
12baa420
BK		 3035
3036 if (ioa_cfg->ucode_sglist) {
3037 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3038 dev_err(&ioa_cfg->pdev->dev,
3039 "Microcode download already in progress\n");
3040 return -EIO;
1da177e4 3041 }
12baa420
BK		 3042
3043 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3044 sglist->num_sg, DMA_TO_DEVICE);
3045
3046 if (!sglist->num_dma_sg) {
3047 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3048 dev_err(&ioa_cfg->pdev->dev,
3049 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3050 return -EIO;
3051 }
3052
12baa420
BK		 3053 ioa_cfg->ucode_sglist = sglist;
3054 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3056 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3057
3058 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3059 ioa_cfg->ucode_sglist = NULL;
3060 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3061 return 0;
3062}
3063
3064/**
3065 * ipr_store_update_fw - Update the firmware on the adapter
ee959b00
TJ		 3066 * @class_dev: device struct
3067 * @buf: buffer
3068 * @count: buffer size
1da177e4
LT		 3069 *
3070 * This function will update the firmware on the adapter.
3071 *
3072 * Return value:
3073 * count on success / other on failure
3074 **/
ee959b00
TJ		 3075static ssize_t ipr_store_update_fw(struct device *dev,
3076 struct device_attribute *attr,
3077 const char *buf, size_t count)
1da177e4 3078{
ee959b00 3079 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3080 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3081 struct ipr_ucode_image_header *image_hdr;
3082 const struct firmware *fw_entry;
3083 struct ipr_sglist *sglist;
1da177e4
LT		 3084 char fname[100];
3085 char *src;
3086 int len, result, dnld_size;
3087
3088 if (!capable(CAP_SYS_ADMIN))
3089 return -EACCES;
3090
3091 len = snprintf(fname, 99, "%s", buf);
3092 fname[len-1] = '\0';
3093
3094 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3095 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3096 return -EIO;
3097 }
3098
3099 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3100
3101 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3102 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3103 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3104 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3105 release_firmware(fw_entry);
3106 return -EINVAL;
3107 }
3108
3109 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3110 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3111 sglist = ipr_alloc_ucode_buffer(dnld_size);
3112
3113 if (!sglist) {
3114 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3115 release_firmware(fw_entry);
3116 return -ENOMEM;
3117 }
3118
3119 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3120
3121 if (result) {
3122 dev_err(&ioa_cfg->pdev->dev,
3123 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3124 goto out;
1da177e4
LT		 3125 }
3126
12baa420 3127 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3128
12baa420
BK		 3129 if (!result)
3130 result = count;
3131out:
1da177e4
LT		 3132 ipr_free_ucode_buffer(sglist);
3133 release_firmware(fw_entry);
12baa420 3134 return result;
1da177e4
LT		 3135}
3136
ee959b00 3137static struct device_attribute ipr_update_fw_attr = {
1da177e4
LT		 3138 .attr = {
3139 .name = "update_fw",
3140 .mode = S_IWUSR,
3141 },
3142 .store = ipr_store_update_fw
3143};
3144
ee959b00 3145static struct device_attribute *ipr_ioa_attrs[] = {
1da177e4
LT		 3146 &ipr_fw_version_attr,
3147 &ipr_log_level_attr,
3148 &ipr_diagnostics_attr,
f37eb54b 3149 &ipr_ioa_state_attr,
1da177e4
LT		 3150 &ipr_ioa_reset_attr,
3151 &ipr_update_fw_attr,
62275040 3152 &ipr_ioa_cache_attr,
1da177e4
LT		 3153 NULL,
3154};
3155
3156#ifdef CONFIG_SCSI_IPR_DUMP
3157/**
3158 * ipr_read_dump - Dump the adapter
3159 * @kobj: kobject struct
91a69029 3160 * @bin_attr: bin_attribute struct
1da177e4
LT		 3161 * @buf: buffer
3162 * @off: offset
3163 * @count: buffer size
3164 *
3165 * Return value:
3166 * number of bytes printed to buffer
3167 **/
91a69029
ZR		 3168static ssize_t ipr_read_dump(struct kobject *kobj,
3169 struct bin_attribute *bin_attr,
3170 char *buf, loff_t off, size_t count)
1da177e4 3171{
ee959b00 3172 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3173 struct Scsi_Host *shost = class_to_shost(cdev);
3174 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3175 struct ipr_dump *dump;
3176 unsigned long lock_flags = 0;
3177 char *src;
3178 int len;
3179 size_t rc = count;
3180
3181 if (!capable(CAP_SYS_ADMIN))
3182 return -EACCES;
3183
3184 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3185 dump = ioa_cfg->dump;
3186
3187 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3189 return 0;
3190 }
3191 kref_get(&dump->kref);
3192 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3193
3194 if (off > dump->driver_dump.hdr.len) {
3195 kref_put(&dump->kref, ipr_release_dump);
3196 return 0;
3197 }
3198
3199 if (off + count > dump->driver_dump.hdr.len) {
3200 count = dump->driver_dump.hdr.len - off;
3201 rc = count;
3202 }
3203
3204 if (count && off < sizeof(dump->driver_dump)) {
3205 if (off + count > sizeof(dump->driver_dump))
3206 len = sizeof(dump->driver_dump) - off;
3207 else
3208 len = count;
3209 src = (u8 *)&dump->driver_dump + off;
3210 memcpy(buf, src, len);
3211 buf += len;
3212 off += len;
3213 count -= len;
3214 }
3215
3216 off -= sizeof(dump->driver_dump);
3217
3218 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3219 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3220 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3221 else
3222 len = count;
3223 src = (u8 *)&dump->ioa_dump + off;
3224 memcpy(buf, src, len);
3225 buf += len;
3226 off += len;
3227 count -= len;
3228 }
3229
3230 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3231
3232 while (count) {
3233 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3234 len = PAGE_ALIGN(off) - off;
3235 else
3236 len = count;
3237 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3238 src += off & ~PAGE_MASK;
3239 memcpy(buf, src, len);
3240 buf += len;
3241 off += len;
3242 count -= len;
3243 }
3244
3245 kref_put(&dump->kref, ipr_release_dump);
3246 return rc;
3247}
3248
3249/**
3250 * ipr_alloc_dump - Prepare for adapter dump
3251 * @ioa_cfg: ioa config struct
3252 *
3253 * Return value:
3254 * 0 on success / other on failure
3255 **/
3256static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3257{
3258 struct ipr_dump *dump;
3259 unsigned long lock_flags = 0;
3260
0bc42e35 3261 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3262
3263 if (!dump) {
3264 ipr_err("Dump memory allocation failed\n");
3265 return -ENOMEM;
3266 }
3267
1da177e4
LT		 3268 kref_init(&dump->kref);
3269 dump->ioa_cfg = ioa_cfg;
3270
3271 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3272
3273 if (INACTIVE != ioa_cfg->sdt_state) {
3274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3275 kfree(dump);
3276 return 0;
3277 }
3278
3279 ioa_cfg->dump = dump;
3280 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3281 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3282 ioa_cfg->dump_taken = 1;
3283 schedule_work(&ioa_cfg->work_q);
3284 }
3285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3286
1da177e4
LT		 3287 return 0;
3288}
3289
3290/**
3291 * ipr_free_dump - Free adapter dump memory
3292 * @ioa_cfg: ioa config struct
3293 *
3294 * Return value:
3295 * 0 on success / other on failure
3296 **/
3297static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3298{
3299 struct ipr_dump *dump;
3300 unsigned long lock_flags = 0;
3301
3302 ENTER;
3303
3304 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3305 dump = ioa_cfg->dump;
3306 if (!dump) {
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308 return 0;
3309 }
3310
3311 ioa_cfg->dump = NULL;
3312 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3313
3314 kref_put(&dump->kref, ipr_release_dump);
3315
3316 LEAVE;
3317 return 0;
3318}
3319
3320/**
3321 * ipr_write_dump - Setup dump state of adapter
3322 * @kobj: kobject struct
91a69029 3323 * @bin_attr: bin_attribute struct
1da177e4
LT		 3324 * @buf: buffer
3325 * @off: offset
3326 * @count: buffer size
3327 *
3328 * Return value:
3329 * number of bytes printed to buffer
3330 **/
91a69029
ZR		 3331static ssize_t ipr_write_dump(struct kobject *kobj,
3332 struct bin_attribute *bin_attr,
3333 char *buf, loff_t off, size_t count)
1da177e4 3334{
ee959b00 3335 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3336 struct Scsi_Host *shost = class_to_shost(cdev);
3337 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3338 int rc;
3339
3340 if (!capable(CAP_SYS_ADMIN))
3341 return -EACCES;
3342
3343 if (buf[0] == '1')
3344 rc = ipr_alloc_dump(ioa_cfg);
3345 else if (buf[0] == '0')
3346 rc = ipr_free_dump(ioa_cfg);
3347 else
3348 return -EINVAL;
3349
3350 if (rc)
3351 return rc;
3352 else
3353 return count;
3354}
3355
3356static struct bin_attribute ipr_dump_attr = {
3357 .attr = {
3358 .name = "dump",
3359 .mode = S_IRUSR | S_IWUSR,
3360 },
3361 .size = 0,
3362 .read = ipr_read_dump,
3363 .write = ipr_write_dump
3364};
3365#else
3366static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3367#endif
3368
3369/**
3370 * ipr_change_queue_depth - Change the device's queue depth
3371 * @sdev: scsi device struct
3372 * @qdepth: depth to set
3373 *
3374 * Return value:
3375 * actual depth set
3376 **/
3377static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3378{
35a39691
BK		 3379 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3380 struct ipr_resource_entry *res;
3381 unsigned long lock_flags = 0;
3382
3383 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3384 res = (struct ipr_resource_entry *)sdev->hostdata;
3385
3386 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3387 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3389
1da177e4
LT		 3390 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3391 return sdev->queue_depth;
3392}
3393
3394/**
3395 * ipr_change_queue_type - Change the device's queue type
3396 * @dsev: scsi device struct
3397 * @tag_type: type of tags to use
3398 *
3399 * Return value:
3400 * actual queue type set
3401 **/
3402static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3403{
3404 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3405 struct ipr_resource_entry *res;
3406 unsigned long lock_flags = 0;
3407
3408 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3409 res = (struct ipr_resource_entry *)sdev->hostdata;
3410
3411 if (res) {
3412 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3413 /*
3414 * We don't bother quiescing the device here since the
3415 * adapter firmware does it for us.
3416 */
3417 scsi_set_tag_type(sdev, tag_type);
3418
3419 if (tag_type)
3420 scsi_activate_tcq(sdev, sdev->queue_depth);
3421 else
3422 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3423 } else
3424 tag_type = 0;
3425 } else
3426 tag_type = 0;
3427
3428 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3429 return tag_type;
3430}
3431
3432/**
3433 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3434 * @dev: device struct
3435 * @buf: buffer
3436 *
3437 * Return value:
3438 * number of bytes printed to buffer
3439 **/
10523b3b 3440static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3441{
3442 struct scsi_device *sdev = to_scsi_device(dev);
3443 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3444 struct ipr_resource_entry *res;
3445 unsigned long lock_flags = 0;
3446 ssize_t len = -ENXIO;
3447
3448 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3449 res = (struct ipr_resource_entry *)sdev->hostdata;
3450 if (res)
3451 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3453 return len;
3454}
3455
3456static struct device_attribute ipr_adapter_handle_attr = {
3457 .attr = {
3458 .name = "adapter_handle",
3459 .mode = S_IRUSR,
3460 },
3461 .show = ipr_show_adapter_handle
3462};
3463
3464static struct device_attribute *ipr_dev_attrs[] = {
3465 &ipr_adapter_handle_attr,
3466 NULL,
3467};
3468
3469/**
3470 * ipr_biosparam - Return the HSC mapping
3471 * @sdev: scsi device struct
3472 * @block_device: block device pointer
3473 * @capacity: capacity of the device
3474 * @parm: Array containing returned HSC values.
3475 *
3476 * This function generates the HSC parms that fdisk uses.
3477 * We want to make sure we return something that places partitions
3478 * on 4k boundaries for best performance with the IOA.
3479 *
3480 * Return value:
3481 * 0 on success
3482 **/
3483static int ipr_biosparam(struct scsi_device *sdev,
3484 struct block_device *block_device,
3485 sector_t capacity, int *parm)
3486{
3487 int heads, sectors;
3488 sector_t cylinders;
3489
3490 heads = 128;
3491 sectors = 32;
3492
3493 cylinders = capacity;
3494 sector_div(cylinders, (128 * 32));
3495
3496 /* return result */
3497 parm[0] = heads;
3498 parm[1] = sectors;
3499 parm[2] = cylinders;
3500
3501 return 0;
3502}
3503
35a39691
BK		 3504/**
3505 * ipr_find_starget - Find target based on bus/target.
3506 * @starget: scsi target struct
3507 *
3508 * Return value:
3509 * resource entry pointer if found / NULL if not found
3510 **/
3511static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3512{
3513 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3514 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3515 struct ipr_resource_entry *res;
3516
3517 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3518 if ((res->cfgte.res_addr.bus == starget->channel) &&
3519 (res->cfgte.res_addr.target == starget->id) &&
3520 (res->cfgte.res_addr.lun == 0)) {
3521 return res;
3522 }
3523 }
3524
3525 return NULL;
3526}
3527
3528static struct ata_port_info sata_port_info;
3529
3530/**
3531 * ipr_target_alloc - Prepare for commands to a SCSI target
3532 * @starget: scsi target struct
3533 *
3534 * If the device is a SATA device, this function allocates an
3535 * ATA port with libata, else it does nothing.
3536 *
3537 * Return value:
3538 * 0 on success / non-0 on failure
3539 **/
3540static int ipr_target_alloc(struct scsi_target *starget)
3541{
3542 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3543 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3544 struct ipr_sata_port *sata_port;
3545 struct ata_port *ap;
3546 struct ipr_resource_entry *res;
3547 unsigned long lock_flags;
3548
3549 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3550 res = ipr_find_starget(starget);
3551 starget->hostdata = NULL;
3552
3553 if (res && ipr_is_gata(res)) {
3554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3555 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3556 if (!sata_port)
3557 return -ENOMEM;
3558
3559 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3560 if (ap) {
3561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3562 sata_port->ioa_cfg = ioa_cfg;
3563 sata_port->ap = ap;
3564 sata_port->res = res;
3565
3566 res->sata_port = sata_port;
3567 ap->private_data = sata_port;
3568 starget->hostdata = sata_port;
3569 } else {
3570 kfree(sata_port);
3571 return -ENOMEM;
3572 }
3573 }
3574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3575
3576 return 0;
3577}
3578
3579/**
3580 * ipr_target_destroy - Destroy a SCSI target
3581 * @starget: scsi target struct
3582 *
3583 * If the device was a SATA device, this function frees the libata
3584 * ATA port, else it does nothing.
3585 *
3586 **/
3587static void ipr_target_destroy(struct scsi_target *starget)
3588{
3589 struct ipr_sata_port *sata_port = starget->hostdata;
3590
3591 if (sata_port) {
3592 starget->hostdata = NULL;
3593 ata_sas_port_destroy(sata_port->ap);
3594 kfree(sata_port);
3595 }
3596}
3597
3598/**
3599 * ipr_find_sdev - Find device based on bus/target/lun.
3600 * @sdev: scsi device struct
3601 *
3602 * Return value:
3603 * resource entry pointer if found / NULL if not found
3604 **/
3605static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3606{
3607 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3608 struct ipr_resource_entry *res;
3609
3610 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3611 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3612 (res->cfgte.res_addr.target == sdev->id) &&
3613 (res->cfgte.res_addr.lun == sdev->lun))
3614 return res;
3615 }
3616
3617 return NULL;
3618}
3619
1da177e4
LT		 3620/**
3621 * ipr_slave_destroy - Unconfigure a SCSI device
3622 * @sdev: scsi device struct
3623 *
3624 * Return value:
3625 * nothing
3626 **/
3627static void ipr_slave_destroy(struct scsi_device *sdev)
3628{
3629 struct ipr_resource_entry *res;
3630 struct ipr_ioa_cfg *ioa_cfg;
3631 unsigned long lock_flags = 0;
3632
3633 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3634
3635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3636 res = (struct ipr_resource_entry *) sdev->hostdata;
3637 if (res) {
35a39691
BK		 3638 if (res->sata_port)
3639 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3640 sdev->hostdata = NULL;
3641 res->sdev = NULL;
35a39691 3642 res->sata_port = NULL;
1da177e4
LT		 3643 }
3644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3645}
3646
3647/**
3648 * ipr_slave_configure - Configure a SCSI device
3649 * @sdev: scsi device struct
3650 *
3651 * This function configures the specified scsi device.
3652 *
3653 * Return value:
3654 * 0 on success
3655 **/
3656static int ipr_slave_configure(struct scsi_device *sdev)
3657{
3658 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3659 struct ipr_resource_entry *res;
3660 unsigned long lock_flags = 0;
3661
3662 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3663 res = sdev->hostdata;
3664 if (res) {
3665 if (ipr_is_af_dasd_device(res))
3666 sdev->type = TYPE_RAID;
0726ce26 3667 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3668 sdev->scsi_level = 4;
0726ce26
BK		 3669 sdev->no_uld_attach = 1;
3670 }
1da177e4
LT		 3671 if (ipr_is_vset_device(res)) {
3672 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3673 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3674 }
e4fbf44e 3675 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3676 sdev->allow_restart = 1;
35a39691
BK		 3677 if (ipr_is_gata(res) && res->sata_port) {
3678 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3679 ata_sas_slave_configure(sdev, res->sata_port->ap);
3680 } else {
3681 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3682 }
1da177e4
LT		 3683 }
3684 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3685 return 0;
3686}
3687
35a39691
BK		 3688/**
3689 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3690 * @sdev: scsi device struct
3691 *
3692 * This function initializes an ATA port so that future commands
3693 * sent through queuecommand will work.
3694 *
3695 * Return value:
3696 * 0 on success
3697 **/
3698static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3699{
3700 struct ipr_sata_port *sata_port = NULL;
3701 int rc = -ENXIO;
3702
3703 ENTER;
3704 if (sdev->sdev_target)
3705 sata_port = sdev->sdev_target->hostdata;
3706 if (sata_port)
3707 rc = ata_sas_port_init(sata_port->ap);
3708 if (rc)
3709 ipr_slave_destroy(sdev);
3710
3711 LEAVE;
3712 return rc;
3713}
3714
1da177e4
LT		 3715/**
3716 * ipr_slave_alloc - Prepare for commands to a device.
3717 * @sdev: scsi device struct
3718 *
3719 * This function saves a pointer to the resource entry
3720 * in the scsi device struct if the device exists. We
3721 * can then use this pointer in ipr_queuecommand when
3722 * handling new commands.
3723 *
3724 * Return value:
692aebfc 3725 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3726 **/
3727static int ipr_slave_alloc(struct scsi_device *sdev)
3728{
3729 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3730 struct ipr_resource_entry *res;
3731 unsigned long lock_flags;
692aebfc 3732 int rc = -ENXIO;
1da177e4
LT		 3733
3734 sdev->hostdata = NULL;
3735
3736 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3737
35a39691
BK		 3738 res = ipr_find_sdev(sdev);
3739 if (res) {
3740 res->sdev = sdev;
3741 res->add_to_ml = 0;
3742 res->in_erp = 0;
3743 sdev->hostdata = res;
3744 if (!ipr_is_naca_model(res))
3745 res->needs_sync_complete = 1;
3746 rc = 0;
3747 if (ipr_is_gata(res)) {
3748 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3749 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3750 }
3751 }
3752
3753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3754
692aebfc 3755 return rc;
1da177e4
LT		 3756}
3757
3758/**
3759 * ipr_eh_host_reset - Reset the host adapter
3760 * @scsi_cmd: scsi command struct
3761 *
3762 * Return value:
3763 * SUCCESS / FAILED
3764 **/
df0ae249 3765static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3766{
3767 struct ipr_ioa_cfg *ioa_cfg;
3768 int rc;
3769
3770 ENTER;
3771 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3772
3773 dev_err(&ioa_cfg->pdev->dev,
3774 "Adapter being reset as a result of error recovery.\n");
3775
3776 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3777 ioa_cfg->sdt_state = GET_DUMP;
3778
3779 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3780
3781 LEAVE;
3782 return rc;
3783}
3784
df0ae249
JG		 3785static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3786{
3787 int rc;
3788
3789 spin_lock_irq(cmd->device->host->host_lock);
3790 rc = __ipr_eh_host_reset(cmd);
3791 spin_unlock_irq(cmd->device->host->host_lock);
3792
3793 return rc;
3794}
3795
c6513096
BK		 3796/**
3797 * ipr_device_reset - Reset the device
3798 * @ioa_cfg: ioa config struct
3799 * @res: resource entry struct
3800 *
3801 * This function issues a device reset to the affected device.
3802 * If the device is a SCSI device, a LUN reset will be sent
3803 * to the device first. If that does not work, a target reset
35a39691
BK		 3804 * will be sent. If the device is a SATA device, a PHY reset will
3805 * be sent.
c6513096
BK		 3806 *
3807 * Return value:
3808 * 0 on success / non-zero on failure
3809 **/
3810static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3811 struct ipr_resource_entry *res)
3812{
3813 struct ipr_cmnd *ipr_cmd;
3814 struct ipr_ioarcb *ioarcb;
3815 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3816 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3817 u32 ioasc;
3818
3819 ENTER;
3820 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3821 ioarcb = &ipr_cmd->ioarcb;
3822 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3823 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3824
3825 ioarcb->res_handle = res->cfgte.res_handle;
3826 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3827 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3828 if (ipr_is_gata(res)) {
3829 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3830 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3831 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3832 }
c6513096
BK		 3833
3834 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3835 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3836 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3837 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3838 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3839 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3840
3841 LEAVE;
3842 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3843}
3844
35a39691
BK		 3845/**
3846 * ipr_sata_reset - Reset the SATA port
cc0680a5 3847 * @link: SATA link to reset
35a39691
BK		 3848 * @classes: class of the attached device
3849 *
cc0680a5 3850 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 3851 *
3852 * Return value:
3853 * 0 on success / non-zero on failure
3854 **/
cc0680a5 3855static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 3856 unsigned long deadline)
35a39691 3857{
cc0680a5 3858 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 3859 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3860 struct ipr_resource_entry *res;
3861 unsigned long lock_flags = 0;
3862 int rc = -ENXIO;
3863
3864 ENTER;
3865 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3866 while(ioa_cfg->in_reset_reload) {
3867 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3868 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3870 }
3871
35a39691
BK		 3872 res = sata_port->res;
3873 if (res) {
3874 rc = ipr_device_reset(ioa_cfg, res);
3875 switch(res->cfgte.proto) {
3876 case IPR_PROTO_SATA:
3877 case IPR_PROTO_SAS_STP:
3878 *classes = ATA_DEV_ATA;
3879 break;
3880 case IPR_PROTO_SATA_ATAPI:
3881 case IPR_PROTO_SAS_STP_ATAPI:
3882 *classes = ATA_DEV_ATAPI;
3883 break;
3884 default:
3885 *classes = ATA_DEV_UNKNOWN;
3886 break;
3887 };
3888 }
3889
3890 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3891 LEAVE;
3892 return rc;
3893}
3894
1da177e4
LT		 3895/**
3896 * ipr_eh_dev_reset - Reset the device
3897 * @scsi_cmd: scsi command struct
3898 *
3899 * This function issues a device reset to the affected device.
3900 * A LUN reset will be sent to the device first. If that does
3901 * not work, a target reset will be sent.
3902 *
3903 * Return value:
3904 * SUCCESS / FAILED
3905 **/
94d0e7b8 3906static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3907{
3908 struct ipr_cmnd *ipr_cmd;
3909 struct ipr_ioa_cfg *ioa_cfg;
3910 struct ipr_resource_entry *res;
35a39691
BK		 3911 struct ata_port *ap;
3912 int rc = 0;
1da177e4
LT		 3913
3914 ENTER;
3915 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3916 res = scsi_cmd->device->hostdata;
3917
eeb88307 3918 if (!res)
1da177e4
LT		 3919 return FAILED;
3920
3921 /*
3922 * If we are currently going through reset/reload, return failed. This will force the
3923 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3924 * reset to complete
3925 */
3926 if (ioa_cfg->in_reset_reload)
3927 return FAILED;
3928 if (ioa_cfg->ioa_is_dead)
3929 return FAILED;
3930
3931 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3932 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3933 if (ipr_cmd->scsi_cmd)
3934 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3935 if (ipr_cmd->qc)
3936 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3937 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3938 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3939 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3940 }
1da177e4
LT		 3941 }
3942 }
3943
3944 res->resetting_device = 1;
fb3ed3cb 3945 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3946
3947 if (ipr_is_gata(res) && res->sata_port) {
3948 ap = res->sata_port->ap;
3949 spin_unlock_irq(scsi_cmd->device->host->host_lock);
a1efdaba 3950 ata_std_error_handler(ap);
35a39691 3951 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3952
3953 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3954 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3955 rc = -EIO;
3956 break;
3957 }
3958 }
35a39691
BK		 3959 } else
3960 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3961 res->resetting_device = 0;
3962
1da177e4 3963 LEAVE;
c6513096 3964 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3965}
3966
94d0e7b8
JG		 3967static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3968{
3969 int rc;
3970
3971 spin_lock_irq(cmd->device->host->host_lock);
3972 rc = __ipr_eh_dev_reset(cmd);
3973 spin_unlock_irq(cmd->device->host->host_lock);
3974
3975 return rc;
3976}
3977
1da177e4
LT		 3978/**
3979 * ipr_bus_reset_done - Op done function for bus reset.
3980 * @ipr_cmd: ipr command struct
3981 *
3982 * This function is the op done function for a bus reset
3983 *
3984 * Return value:
3985 * none
3986 **/
3987static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3988{
3989 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3990 struct ipr_resource_entry *res;
3991
3992 ENTER;
3993 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3994 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3995 sizeof(res->cfgte.res_handle))) {
3996 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3997 break;
3998 }
3999 }
4000
4001 /*
4002 * If abort has not completed, indicate the reset has, else call the
4003 * abort's done function to wake the sleeping eh thread
4004 */
4005 if (ipr_cmd->sibling->sibling)
4006 ipr_cmd->sibling->sibling = NULL;
4007 else
4008 ipr_cmd->sibling->done(ipr_cmd->sibling);
4009
4010 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4011 LEAVE;
4012}
4013
4014/**
4015 * ipr_abort_timeout - An abort task has timed out
4016 * @ipr_cmd: ipr command struct
4017 *
4018 * This function handles when an abort task times out. If this
4019 * happens we issue a bus reset since we have resources tied
4020 * up that must be freed before returning to the midlayer.
4021 *
4022 * Return value:
4023 * none
4024 **/
4025static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4026{
4027 struct ipr_cmnd *reset_cmd;
4028 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4029 struct ipr_cmd_pkt *cmd_pkt;
4030 unsigned long lock_flags = 0;
4031
4032 ENTER;
4033 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4034 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4036 return;
4037 }
4038
fb3ed3cb 4039 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4040 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4041 ipr_cmd->sibling = reset_cmd;
4042 reset_cmd->sibling = ipr_cmd;
4043 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4044 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4045 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4046 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4047 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4048
4049 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4051 LEAVE;
4052}
4053
4054/**
4055 * ipr_cancel_op - Cancel specified op
4056 * @scsi_cmd: scsi command struct
4057 *
4058 * This function cancels specified op.
4059 *
4060 * Return value:
4061 * SUCCESS / FAILED
4062 **/
4063static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4064{
4065 struct ipr_cmnd *ipr_cmd;
4066 struct ipr_ioa_cfg *ioa_cfg;
4067 struct ipr_resource_entry *res;
4068 struct ipr_cmd_pkt *cmd_pkt;
4069 u32 ioasc;
4070 int op_found = 0;
4071
4072 ENTER;
4073 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4074 res = scsi_cmd->device->hostdata;
4075
8fa728a2
JG		 4076 /* If we are currently going through reset/reload, return failed.
4077 * This will force the mid-layer to call ipr_eh_host_reset,
4078 * which will then go to sleep and wait for the reset to complete
4079 */
4080 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4081 return FAILED;
04d9768f 4082 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4083 return FAILED;
4084
4085 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4086 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4087 ipr_cmd->done = ipr_scsi_eh_done;
4088 op_found = 1;
4089 break;
4090 }
4091 }
4092
4093 if (!op_found)
4094 return SUCCESS;
4095
4096 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4097 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4098 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4099 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4100 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4101 ipr_cmd->u.sdev = scsi_cmd->device;
4102
fb3ed3cb
BK		 4103 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4104 scsi_cmd->cmnd[0]);
1da177e4
LT		 4105 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4106 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4107
4108 /*
4109 * If the abort task timed out and we sent a bus reset, we will get
4110 * one the following responses to the abort
4111 */
4112 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4113 ioasc = 0;
4114 ipr_trace;
4115 }
4116
4117 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4118 if (!ipr_is_naca_model(res))
4119 res->needs_sync_complete = 1;
1da177e4
LT		 4120
4121 LEAVE;
4122 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4123}
4124
4125/**
4126 * ipr_eh_abort - Abort a single op
4127 * @scsi_cmd: scsi command struct
4128 *
4129 * Return value:
4130 * SUCCESS / FAILED
4131 **/
4132static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4133{
8fa728a2
JG		 4134 unsigned long flags;
4135 int rc;
1da177e4
LT		 4136
4137 ENTER;
1da177e4 4138
8fa728a2
JG		 4139 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4140 rc = ipr_cancel_op(scsi_cmd);
4141 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4142
4143 LEAVE;
8fa728a2 4144 return rc;
1da177e4
LT		 4145}
4146
4147/**
4148 * ipr_handle_other_interrupt - Handle "other" interrupts
4149 * @ioa_cfg: ioa config struct
4150 * @int_reg: interrupt register
4151 *
4152 * Return value:
4153 * IRQ_NONE / IRQ_HANDLED
4154 **/
4155static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4156 volatile u32 int_reg)
4157{
4158 irqreturn_t rc = IRQ_HANDLED;
4159
4160 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4161 /* Mask the interrupt */
4162 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4163
4164 /* Clear the interrupt */
4165 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4166 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4167
4168 list_del(&ioa_cfg->reset_cmd->queue);
4169 del_timer(&ioa_cfg->reset_cmd->timer);
4170 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4171 } else {
4172 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4173 ioa_cfg->ioa_unit_checked = 1;
4174 else
4175 dev_err(&ioa_cfg->pdev->dev,
4176 "Permanent IOA failure. 0x%08X\n", int_reg);
4177
4178 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4179 ioa_cfg->sdt_state = GET_DUMP;
4180
4181 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4182 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4183 }
4184
4185 return rc;
4186}
4187
4188/**
4189 * ipr_isr - Interrupt service routine
4190 * @irq: irq number
4191 * @devp: pointer to ioa config struct
1da177e4
LT		 4192 *
4193 * Return value:
4194 * IRQ_NONE / IRQ_HANDLED
4195 **/
7d12e780 4196static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4197{
4198 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4199 unsigned long lock_flags = 0;
4200 volatile u32 int_reg, int_mask_reg;
4201 u32 ioasc;
4202 u16 cmd_index;
4203 struct ipr_cmnd *ipr_cmd;
4204 irqreturn_t rc = IRQ_NONE;
4205
4206 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4207
4208 /* If interrupts are disabled, ignore the interrupt */
4209 if (!ioa_cfg->allow_interrupts) {
4210 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4211 return IRQ_NONE;
4212 }
4213
4214 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4215 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4216
4217 /* If an interrupt on the adapter did not occur, ignore it */
4218 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4220 return IRQ_NONE;
4221 }
4222
4223 while (1) {
4224 ipr_cmd = NULL;
4225
4226 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4227 ioa_cfg->toggle_bit) {
4228
4229 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4230 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4231
4232 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4233 ioa_cfg->errors_logged++;
4234 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4235
4236 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4237 ioa_cfg->sdt_state = GET_DUMP;
4238
4239 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4241 return IRQ_HANDLED;
4242 }
4243
4244 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4245
4246 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4247
4248 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4249
4250 list_del(&ipr_cmd->queue);
4251 del_timer(&ipr_cmd->timer);
4252 ipr_cmd->done(ipr_cmd);
4253
4254 rc = IRQ_HANDLED;
4255
4256 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4257 ioa_cfg->hrrq_curr++;
4258 } else {
4259 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4260 ioa_cfg->toggle_bit ^= 1u;
4261 }
4262 }
4263
4264 if (ipr_cmd != NULL) {
4265 /* Clear the PCI interrupt */
4266 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4267 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4268 } else
4269 break;
4270 }
4271
4272 if (unlikely(rc == IRQ_NONE))
4273 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4274
4275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4276 return rc;
4277}
4278
4279/**
4280 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4281 * @ioa_cfg: ioa config struct
4282 * @ipr_cmd: ipr command struct
4283 *
4284 * Return value:
4285 * 0 on success / -1 on failure
4286 **/
4287static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4288 struct ipr_cmnd *ipr_cmd)
4289{
63015bc9
FT		 4290 int i, nseg;
4291 struct scatterlist *sg;
1da177e4
LT		 4292 u32 length;
4293 u32 ioadl_flags = 0;
4294 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4295 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4296 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4297
63015bc9
FT		 4298 length = scsi_bufflen(scsi_cmd);
4299 if (!length)
1da177e4
LT		 4300 return 0;
4301
63015bc9
FT		 4302 nseg = scsi_dma_map(scsi_cmd);
4303 if (nseg < 0) {
4304 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4305 return -1;
4306 }
51b1c7e1 4307
63015bc9
FT		 4308 ipr_cmd->dma_use_sg = nseg;
4309
4310 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4311 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4312 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4313 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4314 ioarcb->write_ioadl_len =
4315 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4316 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4317 ioadl_flags = IPR_IOADL_FLAGS_READ;
4318 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4319 ioarcb->read_ioadl_len =
4320 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4321 }
1da177e4 4322
63015bc9
FT		 4323 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4324 ioadl = ioarcb->add_data.u.ioadl;
4325 ioarcb->write_ioadl_addr =
4326 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4327 offsetof(struct ipr_ioarcb, add_data));
4328 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4329 }
1da177e4 4330
63015bc9
FT		 4331 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4332 ioadl[i].flags_and_data_len =
4333 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4334 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4335 }
4336
63015bc9
FT		 4337 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4338 return 0;
1da177e4
LT		 4339}
4340
4341/**
4342 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4343 * @scsi_cmd: scsi command struct
4344 *
4345 * Return value:
4346 * task attributes
4347 **/
4348static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4349{
4350 u8 tag[2];
4351 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4352
4353 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4354 switch (tag[0]) {
4355 case MSG_SIMPLE_TAG:
4356 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4357 break;
4358 case MSG_HEAD_TAG:
4359 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4360 break;
4361 case MSG_ORDERED_TAG:
4362 rc = IPR_FLAGS_LO_ORDERED_TASK;
4363 break;
4364 };
4365 }
4366
4367 return rc;
4368}
4369
4370/**
4371 * ipr_erp_done - Process completion of ERP for a device
4372 * @ipr_cmd: ipr command struct
4373 *
4374 * This function copies the sense buffer into the scsi_cmd
4375 * struct and pushes the scsi_done function.
4376 *
4377 * Return value:
4378 * nothing
4379 **/
4380static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4381{
4382 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4383 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4384 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4385 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4386
4387 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4388 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4389 scmd_printk(KERN_ERR, scsi_cmd,
4390 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4391 } else {
4392 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4393 SCSI_SENSE_BUFFERSIZE);
4394 }
4395
4396 if (res) {
ee0a90fa
BK		 4397 if (!ipr_is_naca_model(res))
4398 res->needs_sync_complete = 1;
1da177e4
LT		 4399 res->in_erp = 0;
4400 }
63015bc9 4401 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4402 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4403 scsi_cmd->scsi_done(scsi_cmd);
4404}
4405
4406/**
4407 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4408 * @ipr_cmd: ipr command struct
4409 *
4410 * Return value:
4411 * none
4412 **/
4413static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4414{
51b1c7e1
BK		 4415 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4416 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4417 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4418
4419 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4420 ioarcb->write_data_transfer_length = 0;
4421 ioarcb->read_data_transfer_length = 0;
4422 ioarcb->write_ioadl_len = 0;
4423 ioarcb->read_ioadl_len = 0;
4424 ioasa->ioasc = 0;
4425 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4426 ioarcb->write_ioadl_addr =
4427 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4428 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4429}
4430
4431/**
4432 * ipr_erp_request_sense - Send request sense to a device
4433 * @ipr_cmd: ipr command struct
4434 *
4435 * This function sends a request sense to a device as a result
4436 * of a check condition.
4437 *
4438 * Return value:
4439 * nothing
4440 **/
4441static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4442{
4443 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4444 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4445
4446 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4447 ipr_erp_done(ipr_cmd);
4448 return;
4449 }
4450
4451 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4452
4453 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4454 cmd_pkt->cdb[0] = REQUEST_SENSE;
4455 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4456 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4457 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4458 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4459
4460 ipr_cmd->ioadl[0].flags_and_data_len =
4461 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4462 ipr_cmd->ioadl[0].address =
4463 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4464
4465 ipr_cmd->ioarcb.read_ioadl_len =
4466 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4467 ipr_cmd->ioarcb.read_data_transfer_length =
4468 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4469
4470 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4471 IPR_REQUEST_SENSE_TIMEOUT * 2);
4472}
4473
4474/**
4475 * ipr_erp_cancel_all - Send cancel all to a device
4476 * @ipr_cmd: ipr command struct
4477 *
4478 * This function sends a cancel all to a device to clear the
4479 * queue. If we are running TCQ on the device, QERR is set to 1,
4480 * which means all outstanding ops have been dropped on the floor.
4481 * Cancel all will return them to us.
4482 *
4483 * Return value:
4484 * nothing
4485 **/
4486static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4487{
4488 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4489 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4490 struct ipr_cmd_pkt *cmd_pkt;
4491
4492 res->in_erp = 1;
4493
4494 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4495
4496 if (!scsi_get_tag_type(scsi_cmd->device)) {
4497 ipr_erp_request_sense(ipr_cmd);
4498 return;
4499 }
4500
4501 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4502 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4503 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4504
4505 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4506 IPR_CANCEL_ALL_TIMEOUT);
4507}
4508
4509/**
4510 * ipr_dump_ioasa - Dump contents of IOASA
4511 * @ioa_cfg: ioa config struct
4512 * @ipr_cmd: ipr command struct
fe964d0a 4513 * @res: resource entry struct
1da177e4
LT		 4514 *
4515 * This function is invoked by the interrupt handler when ops
4516 * fail. It will log the IOASA if appropriate. Only called
4517 * for GPDD ops.
4518 *
4519 * Return value:
4520 * none
4521 **/
4522static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4523 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4524{
4525 int i;
4526 u16 data_len;
b0692dd4 4527 u32 ioasc, fd_ioasc;
1da177e4
LT		 4528 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4529 __be32 *ioasa_data = (__be32 *)ioasa;
4530 int error_index;
4531
4532 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4533 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4534
4535 if (0 == ioasc)
4536 return;
4537
4538 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4539 return;
4540
b0692dd4
BK		 4541 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4542 error_index = ipr_get_error(fd_ioasc);
4543 else
4544 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4545
4546 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4547 /* Don't log an error if the IOA already logged one */
4548 if (ioasa->ilid != 0)
4549 return;
4550
cc9bd5d4
BK		 4551 if (!ipr_is_gscsi(res))
4552 return;
4553
1da177e4
LT		 4554 if (ipr_error_table[error_index].log_ioasa == 0)
4555 return;
4556 }
4557
fe964d0a 4558 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4559
4560 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4561 data_len = sizeof(struct ipr_ioasa);
4562 else
4563 data_len = be16_to_cpu(ioasa->ret_stat_len);
4564
4565 ipr_err("IOASA Dump:\n");
4566
4567 for (i = 0; i < data_len / 4; i += 4) {
4568 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4569 be32_to_cpu(ioasa_data[i]),
4570 be32_to_cpu(ioasa_data[i+1]),
4571 be32_to_cpu(ioasa_data[i+2]),
4572 be32_to_cpu(ioasa_data[i+3]));
4573 }
4574}
4575
4576/**
4577 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4578 * @ioasa: IOASA
4579 * @sense_buf: sense data buffer
4580 *
4581 * Return value:
4582 * none
4583 **/
4584static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4585{
4586 u32 failing_lba;
4587 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4588 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4589 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4590 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4591
4592 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4593
4594 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4595 return;
4596
4597 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4598
4599 if (ipr_is_vset_device(res) &&
4600 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4601 ioasa->u.vset.failing_lba_hi != 0) {
4602 sense_buf[0] = 0x72;
4603 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4604 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4605 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4606
4607 sense_buf[7] = 12;
4608 sense_buf[8] = 0;
4609 sense_buf[9] = 0x0A;
4610 sense_buf[10] = 0x80;
4611
4612 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4613
4614 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4615 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4616 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4617 sense_buf[15] = failing_lba & 0x000000ff;
4618
4619 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4620
4621 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4622 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4623 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4624 sense_buf[19] = failing_lba & 0x000000ff;
4625 } else {
4626 sense_buf[0] = 0x70;
4627 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4628 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4629 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4630
4631 /* Illegal request */
4632 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4633 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4634 sense_buf[7] = 10; /* additional length */
4635
4636 /* IOARCB was in error */
4637 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4638 sense_buf[15] = 0xC0;
4639 else /* Parameter data was invalid */
4640 sense_buf[15] = 0x80;
4641
4642 sense_buf[16] =
4643 ((IPR_FIELD_POINTER_MASK &
4644 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4645 sense_buf[17] =
4646 (IPR_FIELD_POINTER_MASK &
4647 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4648 } else {
4649 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4650 if (ipr_is_vset_device(res))
4651 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4652 else
4653 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4654
4655 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4656 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4657 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4658 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4659 sense_buf[6] = failing_lba & 0x000000ff;
4660 }
4661
4662 sense_buf[7] = 6; /* additional length */
4663 }
4664 }
4665}
4666
ee0a90fa
BK		 4667/**
4668 * ipr_get_autosense - Copy autosense data to sense buffer
4669 * @ipr_cmd: ipr command struct
4670 *
4671 * This function copies the autosense buffer to the buffer
4672 * in the scsi_cmd, if there is autosense available.
4673 *
4674 * Return value:
4675 * 1 if autosense was available / 0 if not
4676 **/
4677static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4678{
4679 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4680
117d2ce1 4681 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4682 return 0;
4683
4684 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4685 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4686 SCSI_SENSE_BUFFERSIZE));
4687 return 1;
4688}
4689
1da177e4
LT		 4690/**
4691 * ipr_erp_start - Process an error response for a SCSI op
4692 * @ioa_cfg: ioa config struct
4693 * @ipr_cmd: ipr command struct
4694 *
4695 * This function determines whether or not to initiate ERP
4696 * on the affected device.
4697 *
4698 * Return value:
4699 * nothing
4700 **/
4701static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4702 struct ipr_cmnd *ipr_cmd)
4703{
4704 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4705 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4706 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4707 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4708
4709 if (!res) {
4710 ipr_scsi_eh_done(ipr_cmd);
4711 return;
4712 }
4713
8a048994 4714 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4715 ipr_gen_sense(ipr_cmd);
4716
cc9bd5d4
BK		 4717 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4718
8a048994 4719 switch (masked_ioasc) {
1da177e4 4720 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4721 if (ipr_is_naca_model(res))
4722 scsi_cmd->result |= (DID_ABORT << 16);
4723 else
4724 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4725 break;
4726 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4727 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4728 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4729 break;
4730 case IPR_IOASC_HW_SEL_TIMEOUT:
4731 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4732 if (!ipr_is_naca_model(res))
4733 res->needs_sync_complete = 1;
1da177e4
LT		 4734 break;
4735 case IPR_IOASC_SYNC_REQUIRED:
4736 if (!res->in_erp)
4737 res->needs_sync_complete = 1;
4738 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4739 break;
4740 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4741 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4742 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4743 break;
4744 case IPR_IOASC_BUS_WAS_RESET:
4745 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4746 /*
4747 * Report the bus reset and ask for a retry. The device
4748 * will give CC/UA the next command.
4749 */
4750 if (!res->resetting_device)
4751 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4752 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4753 if (!ipr_is_naca_model(res))
4754 res->needs_sync_complete = 1;
1da177e4
LT		 4755 break;
4756 case IPR_IOASC_HW_DEV_BUS_STATUS:
4757 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4758 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4759 if (!ipr_get_autosense(ipr_cmd)) {
4760 if (!ipr_is_naca_model(res)) {
4761 ipr_erp_cancel_all(ipr_cmd);
4762 return;
4763 }
4764 }
1da177e4 4765 }
ee0a90fa
BK		 4766 if (!ipr_is_naca_model(res))
4767 res->needs_sync_complete = 1;
1da177e4
LT		 4768 break;
4769 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4770 break;
4771 default:
5b7304fb
BK		 4772 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4773 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4774 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4775 res->needs_sync_complete = 1;
4776 break;
4777 }
4778
63015bc9 4779 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4780 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4781 scsi_cmd->scsi_done(scsi_cmd);
4782}
4783
4784/**
4785 * ipr_scsi_done - mid-layer done function
4786 * @ipr_cmd: ipr command struct
4787 *
4788 * This function is invoked by the interrupt handler for
4789 * ops generated by the SCSI mid-layer
4790 *
4791 * Return value:
4792 * none
4793 **/
4794static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4795{
4796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4797 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4798 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4799
63015bc9 4800 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4801
4802 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4803 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4804 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4805 scsi_cmd->scsi_done(scsi_cmd);
4806 } else
4807 ipr_erp_start(ioa_cfg, ipr_cmd);
4808}
4809
1da177e4
LT		 4810/**
4811 * ipr_queuecommand - Queue a mid-layer request
4812 * @scsi_cmd: scsi command struct
4813 * @done: done function
4814 *
4815 * This function queues a request generated by the mid-layer.
4816 *
4817 * Return value:
4818 * 0 on success
4819 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4820 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4821 **/
4822static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4823 void (*done) (struct scsi_cmnd *))
4824{
4825 struct ipr_ioa_cfg *ioa_cfg;
4826 struct ipr_resource_entry *res;
4827 struct ipr_ioarcb *ioarcb;
4828 struct ipr_cmnd *ipr_cmd;
4829 int rc = 0;
4830
4831 scsi_cmd->scsi_done = done;
4832 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4833 res = scsi_cmd->device->hostdata;
4834 scsi_cmd->result = (DID_OK << 16);
4835
4836 /*
4837 * We are currently blocking all devices due to a host reset
4838 * We have told the host to stop giving us new requests, but
4839 * ERP ops don't count. FIXME
4840 */
4841 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4842 return SCSI_MLQUEUE_HOST_BUSY;
4843
4844 /*
4845 * FIXME - Create scsi_set_host_offline interface
4846 * and the ioa_is_dead check can be removed
4847 */
4848 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4849 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4850 scsi_cmd->result = (DID_NO_CONNECT << 16);
4851 scsi_cmd->scsi_done(scsi_cmd);
4852 return 0;
4853 }
4854
35a39691
BK		 4855 if (ipr_is_gata(res) && res->sata_port)
4856 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4857
1da177e4
LT		 4858 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4859 ioarcb = &ipr_cmd->ioarcb;
4860 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4861
4862 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4863 ipr_cmd->scsi_cmd = scsi_cmd;
4864 ioarcb->res_handle = res->cfgte.res_handle;
4865 ipr_cmd->done = ipr_scsi_done;
4866 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4867
4868 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4869 if (scsi_cmd->underflow == 0)
4870 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4871
4872 if (res->needs_sync_complete) {
4873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4874 res->needs_sync_complete = 0;
4875 }
4876
4877 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4878 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4879 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4880 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4881 }
4882
4883 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4884 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4885 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4886
1da177e4
LT		 4887 if (likely(rc == 0))
4888 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4889
4890 if (likely(rc == 0)) {
4891 mb();
4892 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4893 ioa_cfg->regs.ioarrin_reg);
4894 } else {
4895 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4896 return SCSI_MLQUEUE_HOST_BUSY;
4897 }
4898
4899 return 0;
4900}
4901
35a39691
BK		 4902/**
4903 * ipr_ioctl - IOCTL handler
4904 * @sdev: scsi device struct
4905 * @cmd: IOCTL cmd
4906 * @arg: IOCTL arg
4907 *
4908 * Return value:
4909 * 0 on success / other on failure
4910 **/
bd705f2d 4911static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4912{
4913 struct ipr_resource_entry *res;
4914
4915 res = (struct ipr_resource_entry *)sdev->hostdata;
4916 if (res && ipr_is_gata(res))
4917 return ata_scsi_ioctl(sdev, cmd, arg);
4918
4919 return -EINVAL;
4920}
4921
1da177e4
LT		 4922/**
4923 * ipr_info - Get information about the card/driver
4924 * @scsi_host: scsi host struct
4925 *
4926 * Return value:
4927 * pointer to buffer with description string
4928 **/
4929static const char * ipr_ioa_info(struct Scsi_Host *host)
4930{
4931 static char buffer[512];
4932 struct ipr_ioa_cfg *ioa_cfg;
4933 unsigned long lock_flags = 0;
4934
4935 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4936
4937 spin_lock_irqsave(host->host_lock, lock_flags);
4938 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4939 spin_unlock_irqrestore(host->host_lock, lock_flags);
4940
4941 return buffer;
4942}
4943
4944static struct scsi_host_template driver_template = {
4945 .module = THIS_MODULE,
4946 .name = "IPR",
4947 .info = ipr_ioa_info,
35a39691 4948 .ioctl = ipr_ioctl,
1da177e4
LT		 4949 .queuecommand = ipr_queuecommand,
4950 .eh_abort_handler = ipr_eh_abort,
4951 .eh_device_reset_handler = ipr_eh_dev_reset,
4952 .eh_host_reset_handler = ipr_eh_host_reset,
4953 .slave_alloc = ipr_slave_alloc,
4954 .slave_configure = ipr_slave_configure,
4955 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4956 .target_alloc = ipr_target_alloc,
4957 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4958 .change_queue_depth = ipr_change_queue_depth,
4959 .change_queue_type = ipr_change_queue_type,
4960 .bios_param = ipr_biosparam,
4961 .can_queue = IPR_MAX_COMMANDS,
4962 .this_id = -1,
4963 .sg_tablesize = IPR_MAX_SGLIST,
4964 .max_sectors = IPR_IOA_MAX_SECTORS,
4965 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4966 .use_clustering = ENABLE_CLUSTERING,
4967 .shost_attrs = ipr_ioa_attrs,
4968 .sdev_attrs = ipr_dev_attrs,
4969 .proc_name = IPR_NAME
4970};
4971
35a39691
BK		 4972/**
4973 * ipr_ata_phy_reset - libata phy_reset handler
4974 * @ap: ata port to reset
4975 *
4976 **/
4977static void ipr_ata_phy_reset(struct ata_port *ap)
4978{
4979 unsigned long flags;
4980 struct ipr_sata_port *sata_port = ap->private_data;
4981 struct ipr_resource_entry *res = sata_port->res;
4982 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4983 int rc;
4984
4985 ENTER;
4986 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4987 while(ioa_cfg->in_reset_reload) {
4988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4989 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4990 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4991 }
4992
4993 if (!ioa_cfg->allow_cmds)
4994 goto out_unlock;
4995
4996 rc = ipr_device_reset(ioa_cfg, res);
4997
4998 if (rc) {
ac8869d5 4999 ata_port_disable(ap);
35a39691
BK		 5000 goto out_unlock;
5001 }
5002
5003 switch(res->cfgte.proto) {
5004 case IPR_PROTO_SATA:
5005 case IPR_PROTO_SAS_STP:
9af5c9c9 5006 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 5007 break;
5008 case IPR_PROTO_SATA_ATAPI:
5009 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 5010 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 5011 break;
5012 default:
9af5c9c9 5013 ap->link.device[0].class = ATA_DEV_UNKNOWN;
ac8869d5 5014 ata_port_disable(ap);
35a39691
BK		 5015 break;
5016 };
5017
5018out_unlock:
5019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5020 LEAVE;
5021}
5022
5023/**
5024 * ipr_ata_post_internal - Cleanup after an internal command
5025 * @qc: ATA queued command
5026 *
5027 * Return value:
5028 * none
5029 **/
5030static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5031{
5032 struct ipr_sata_port *sata_port = qc->ap->private_data;
5033 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5034 struct ipr_cmnd *ipr_cmd;
5035 unsigned long flags;
5036
5037 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5038 while(ioa_cfg->in_reset_reload) {
5039 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5040 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5041 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5042 }
5043
35a39691
BK		 5044 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5045 if (ipr_cmd->qc == qc) {
5046 ipr_device_reset(ioa_cfg, sata_port->res);
5047 break;
5048 }
5049 }
5050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5051}
5052
35a39691
BK		 5053/**
5054 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5055 * @regs: destination
5056 * @tf: source ATA taskfile
5057 *
5058 * Return value:
5059 * none
5060 **/
5061static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5062 struct ata_taskfile *tf)
5063{
5064 regs->feature = tf->feature;
5065 regs->nsect = tf->nsect;
5066 regs->lbal = tf->lbal;
5067 regs->lbam = tf->lbam;
5068 regs->lbah = tf->lbah;
5069 regs->device = tf->device;
5070 regs->command = tf->command;
5071 regs->hob_feature = tf->hob_feature;
5072 regs->hob_nsect = tf->hob_nsect;
5073 regs->hob_lbal = tf->hob_lbal;
5074 regs->hob_lbam = tf->hob_lbam;
5075 regs->hob_lbah = tf->hob_lbah;
5076 regs->ctl = tf->ctl;
5077}
5078
5079/**
5080 * ipr_sata_done - done function for SATA commands
5081 * @ipr_cmd: ipr command struct
5082 *
5083 * This function is invoked by the interrupt handler for
5084 * ops generated by the SCSI mid-layer to SATA devices
5085 *
5086 * Return value:
5087 * none
5088 **/
5089static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5090{
5091 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5092 struct ata_queued_cmd *qc = ipr_cmd->qc;
5093 struct ipr_sata_port *sata_port = qc->ap->private_data;
5094 struct ipr_resource_entry *res = sata_port->res;
5095 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5096
5097 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5098 sizeof(struct ipr_ioasa_gata));
5099 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5100
5101 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5102 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5103 res->cfgte.res_addr.target);
5104
5105 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5106 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5107 else
5108 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5109 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5110 ata_qc_complete(qc);
5111}
5112
5113/**
5114 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5115 * @ipr_cmd: ipr command struct
5116 * @qc: ATA queued command
5117 *
5118 **/
5119static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5120 struct ata_queued_cmd *qc)
5121{
5122 u32 ioadl_flags = 0;
5123 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5124 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3be6cbd7 5125 struct ipr_ioadl_desc *last_ioadl = NULL;
dde20207 5126 int len = qc->nbytes;
35a39691 5127 struct scatterlist *sg;
ff2aeb1e 5128 unsigned int si;
35a39691
BK		 5129
5130 if (len == 0)
5131 return;
5132
5133 if (qc->dma_dir == DMA_TO_DEVICE) {
5134 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5135 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5136 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5137 ioarcb->write_ioadl_len =
5138 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5139 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5140 ioadl_flags = IPR_IOADL_FLAGS_READ;
5141 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5142 ioarcb->read_ioadl_len =
5143 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5144 }
5145
ff2aeb1e 5146 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 5147 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5148 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 5149
5150 last_ioadl = ioadl;
5151 ioadl++;
35a39691 5152 }
3be6cbd7
JG		 5153
5154 if (likely(last_ioadl))
5155 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 5156}
5157
5158/**
5159 * ipr_qc_issue - Issue a SATA qc to a device
5160 * @qc: queued command
5161 *
5162 * Return value:
5163 * 0 if success
5164 **/
5165static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5166{
5167 struct ata_port *ap = qc->ap;
5168 struct ipr_sata_port *sata_port = ap->private_data;
5169 struct ipr_resource_entry *res = sata_port->res;
5170 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5171 struct ipr_cmnd *ipr_cmd;
5172 struct ipr_ioarcb *ioarcb;
5173 struct ipr_ioarcb_ata_regs *regs;
5174
5175 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5176 return AC_ERR_SYSTEM;
35a39691
BK		 5177
5178 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5179 ioarcb = &ipr_cmd->ioarcb;
5180 regs = &ioarcb->add_data.u.regs;
5181
5182 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5183 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5184
5185 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5186 ipr_cmd->qc = qc;
5187 ipr_cmd->done = ipr_sata_done;
5188 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5189 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5190 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5191 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
dde20207 5192 ipr_cmd->dma_use_sg = qc->n_elem;
35a39691
BK		 5193
5194 ipr_build_ata_ioadl(ipr_cmd, qc);
5195 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5196 ipr_copy_sata_tf(regs, &qc->tf);
5197 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5198 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5199
5200 switch (qc->tf.protocol) {
5201 case ATA_PROT_NODATA:
5202 case ATA_PROT_PIO:
5203 break;
5204
5205 case ATA_PROT_DMA:
5206 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5207 break;
5208
0dc36888
TH		 5209 case ATAPI_PROT_PIO:
5210 case ATAPI_PROT_NODATA:
35a39691
BK		 5211 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5212 break;
5213
0dc36888 5214 case ATAPI_PROT_DMA:
35a39691
BK		 5215 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5216 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5217 break;
5218
5219 default:
5220 WARN_ON(1);
0feeed82 5221 return AC_ERR_INVALID;
35a39691
BK		 5222 }
5223
5224 mb();
5225 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5226 ioa_cfg->regs.ioarrin_reg);
5227 return 0;
5228}
5229
4c9bf4e7
TH		 5230/**
5231 * ipr_qc_fill_rtf - Read result TF
5232 * @qc: ATA queued command
5233 *
5234 * Return value:
5235 * true
5236 **/
5237static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
5238{
5239 struct ipr_sata_port *sata_port = qc->ap->private_data;
5240 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5241 struct ata_taskfile *tf = &qc->result_tf;
5242
5243 tf->feature = g->error;
5244 tf->nsect = g->nsect;
5245 tf->lbal = g->lbal;
5246 tf->lbam = g->lbam;
5247 tf->lbah = g->lbah;
5248 tf->device = g->device;
5249 tf->command = g->status;
5250 tf->hob_nsect = g->hob_nsect;
5251 tf->hob_lbal = g->hob_lbal;
5252 tf->hob_lbam = g->hob_lbam;
5253 tf->hob_lbah = g->hob_lbah;
5254 tf->ctl = g->alt_status;
5255
5256 return true;
5257}
5258
35a39691 5259static struct ata_port_operations ipr_sata_ops = {
35a39691 5260 .phy_reset = ipr_ata_phy_reset,
a1efdaba 5261 .hardreset = ipr_sata_reset,
35a39691 5262 .post_internal_cmd = ipr_ata_post_internal,
35a39691
BK		 5263 .qc_prep = ata_noop_qc_prep,
5264 .qc_issue = ipr_qc_issue,
4c9bf4e7 5265 .qc_fill_rtf = ipr_qc_fill_rtf,
35a39691
BK		 5266 .port_start = ata_sas_port_start,
5267 .port_stop = ata_sas_port_stop
5268};
5269
5270static struct ata_port_info sata_port_info = {
5271 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5272 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5273 .pio_mask = 0x10, /* pio4 */
5274 .mwdma_mask = 0x07,
5275 .udma_mask = 0x7f, /* udma0-6 */
5276 .port_ops = &ipr_sata_ops
5277};
5278
1da177e4
LT		 5279#ifdef CONFIG_PPC_PSERIES
5280static const u16 ipr_blocked_processors[] = {
5281 PV_NORTHSTAR,
5282 PV_PULSAR,
5283 PV_POWER4,
5284 PV_ICESTAR,
5285 PV_SSTAR,
5286 PV_POWER4p,
5287 PV_630,
5288 PV_630p
5289};
5290
5291/**
5292 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5293 * @ioa_cfg: ioa cfg struct
5294 *
5295 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5296 * certain pSeries hardware. This function determines if the given
5297 * adapter is in one of these confgurations or not.
5298 *
5299 * Return value:
5300 * 1 if adapter is not supported / 0 if adapter is supported
5301 **/
5302static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5303{
1da177e4
LT		 5304 int i;
5305
44c10138
AK		 5306 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5307 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5308 if (__is_processor(ipr_blocked_processors[i]))
5309 return 1;
1da177e4
LT		 5310 }
5311 }
5312 return 0;
5313}
5314#else
5315#define ipr_invalid_adapter(ioa_cfg) 0
5316#endif
5317
5318/**
5319 * ipr_ioa_bringdown_done - IOA bring down completion.
5320 * @ipr_cmd: ipr command struct
5321 *
5322 * This function processes the completion of an adapter bring down.
5323 * It wakes any reset sleepers.
5324 *
5325 * Return value:
5326 * IPR_RC_JOB_RETURN
5327 **/
5328static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5329{
5330 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5331
5332 ENTER;
5333 ioa_cfg->in_reset_reload = 0;
5334 ioa_cfg->reset_retries = 0;
5335 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5336 wake_up_all(&ioa_cfg->reset_wait_q);
5337
5338 spin_unlock_irq(ioa_cfg->host->host_lock);
5339 scsi_unblock_requests(ioa_cfg->host);
5340 spin_lock_irq(ioa_cfg->host->host_lock);
5341 LEAVE;
5342
5343 return IPR_RC_JOB_RETURN;
5344}
5345
5346/**
5347 * ipr_ioa_reset_done - IOA reset completion.
5348 * @ipr_cmd: ipr command struct
5349 *
5350 * This function processes the completion of an adapter reset.
5351 * It schedules any necessary mid-layer add/removes and
5352 * wakes any reset sleepers.
5353 *
5354 * Return value:
5355 * IPR_RC_JOB_RETURN
5356 **/
5357static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5358{
5359 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5360 struct ipr_resource_entry *res;
5361 struct ipr_hostrcb *hostrcb, *temp;
5362 int i = 0;
5363
5364 ENTER;
5365 ioa_cfg->in_reset_reload = 0;
5366 ioa_cfg->allow_cmds = 1;
5367 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5368 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5369
5370 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5371 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5372 ipr_trace;
5373 break;
5374 }
5375 }
5376 schedule_work(&ioa_cfg->work_q);
5377
5378 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5379 list_del(&hostrcb->queue);
5380 if (i++ < IPR_NUM_LOG_HCAMS)
5381 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5382 else
5383 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5384 }
5385
6bb04170 5386 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5387 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5388
5389 ioa_cfg->reset_retries = 0;
5390 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5391 wake_up_all(&ioa_cfg->reset_wait_q);
5392
5393 spin_unlock_irq(ioa_cfg->host->host_lock);
5394 scsi_unblock_requests(ioa_cfg->host);
5395 spin_lock_irq(ioa_cfg->host->host_lock);
5396
5397 if (!ioa_cfg->allow_cmds)
5398 scsi_block_requests(ioa_cfg->host);
5399
5400 LEAVE;
5401 return IPR_RC_JOB_RETURN;
5402}
5403
5404/**
5405 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5406 * @supported_dev: supported device struct
5407 * @vpids: vendor product id struct
5408 *
5409 * Return value:
5410 * none
5411 **/
5412static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5413 struct ipr_std_inq_vpids *vpids)
5414{
5415 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5416 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5417 supported_dev->num_records = 1;
5418 supported_dev->data_length =
5419 cpu_to_be16(sizeof(struct ipr_supported_device));
5420 supported_dev->reserved = 0;
5421}
5422
5423/**
5424 * ipr_set_supported_devs - Send Set Supported Devices for a device
5425 * @ipr_cmd: ipr command struct
5426 *
5427 * This function send a Set Supported Devices to the adapter
5428 *
5429 * Return value:
5430 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5431 **/
5432static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5433{
5434 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5435 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5436 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5437 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5438 struct ipr_resource_entry *res = ipr_cmd->u.res;
5439
5440 ipr_cmd->job_step = ipr_ioa_reset_done;
5441
5442 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5443 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5444 continue;
5445
5446 ipr_cmd->u.res = res;
5447 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5448
5449 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5450 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5451 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5452
5453 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5454 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5455 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5456
5457 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5458 sizeof(struct ipr_supported_device));
5459 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5460 offsetof(struct ipr_misc_cbs, supp_dev));
5461 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5462 ioarcb->write_data_transfer_length =
5463 cpu_to_be32(sizeof(struct ipr_supported_device));
5464
5465 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5466 IPR_SET_SUP_DEVICE_TIMEOUT);
5467
5468 ipr_cmd->job_step = ipr_set_supported_devs;
5469 return IPR_RC_JOB_RETURN;
5470 }
5471
5472 return IPR_RC_JOB_CONTINUE;
5473}
5474
62275040
BK		 5475/**
5476 * ipr_setup_write_cache - Disable write cache if needed
5477 * @ipr_cmd: ipr command struct
5478 *
5479 * This function sets up adapters write cache to desired setting
5480 *
5481 * Return value:
5482 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5483 **/
5484static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5485{
5486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5487
5488 ipr_cmd->job_step = ipr_set_supported_devs;
5489 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5490 struct ipr_resource_entry, queue);
5491
5492 if (ioa_cfg->cache_state != CACHE_DISABLED)
5493 return IPR_RC_JOB_CONTINUE;
5494
5495 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5496 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5497 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5498 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5499
5500 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5501
5502 return IPR_RC_JOB_RETURN;
5503}
5504
1da177e4
LT		 5505/**
5506 * ipr_get_mode_page - Locate specified mode page
5507 * @mode_pages: mode page buffer
5508 * @page_code: page code to find
5509 * @len: minimum required length for mode page
5510 *
5511 * Return value:
5512 * pointer to mode page / NULL on failure
5513 **/
5514static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5515 u32 page_code, u32 len)
5516{
5517 struct ipr_mode_page_hdr *mode_hdr;
5518 u32 page_length;
5519 u32 length;
5520
5521 if (!mode_pages || (mode_pages->hdr.length == 0))
5522 return NULL;
5523
5524 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5525 mode_hdr = (struct ipr_mode_page_hdr *)
5526 (mode_pages->data + mode_pages->hdr.block_desc_len);
5527
5528 while (length) {
5529 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5530 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5531 return mode_hdr;
5532 break;
5533 } else {
5534 page_length = (sizeof(struct ipr_mode_page_hdr) +
5535 mode_hdr->page_length);
5536 length -= page_length;
5537 mode_hdr = (struct ipr_mode_page_hdr *)
5538 ((unsigned long)mode_hdr + page_length);
5539 }
5540 }
5541 return NULL;
5542}
5543
5544/**
5545 * ipr_check_term_power - Check for term power errors
5546 * @ioa_cfg: ioa config struct
5547 * @mode_pages: IOAFP mode pages buffer
5548 *
5549 * Check the IOAFP's mode page 28 for term power errors
5550 *
5551 * Return value:
5552 * nothing
5553 **/
5554static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5555 struct ipr_mode_pages *mode_pages)
5556{
5557 int i;
5558 int entry_length;
5559 struct ipr_dev_bus_entry *bus;
5560 struct ipr_mode_page28 *mode_page;
5561
5562 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5563 sizeof(struct ipr_mode_page28));
5564
5565 entry_length = mode_page->entry_length;
5566
5567 bus = mode_page->bus;
5568
5569 for (i = 0; i < mode_page->num_entries; i++) {
5570 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5571 dev_err(&ioa_cfg->pdev->dev,
5572 "Term power is absent on scsi bus %d\n",
5573 bus->res_addr.bus);
5574 }
5575
5576 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5577 }
5578}
5579
5580/**
5581 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5582 * @ioa_cfg: ioa config struct
5583 *
5584 * Looks through the config table checking for SES devices. If
5585 * the SES device is in the SES table indicating a maximum SCSI
5586 * bus speed, the speed is limited for the bus.
5587 *
5588 * Return value:
5589 * none
5590 **/
5591static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5592{
5593 u32 max_xfer_rate;
5594 int i;
5595
5596 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5597 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5598 ioa_cfg->bus_attr[i].bus_width);
5599
5600 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5601 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5602 }
5603}
5604
5605/**
5606 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5607 * @ioa_cfg: ioa config struct
5608 * @mode_pages: mode page 28 buffer
5609 *
5610 * Updates mode page 28 based on driver configuration
5611 *
5612 * Return value:
5613 * none
5614 **/
5615static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5616 struct ipr_mode_pages *mode_pages)
5617{
5618 int i, entry_length;
5619 struct ipr_dev_bus_entry *bus;
5620 struct ipr_bus_attributes *bus_attr;
5621 struct ipr_mode_page28 *mode_page;
5622
5623 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5624 sizeof(struct ipr_mode_page28));
5625
5626 entry_length = mode_page->entry_length;
5627
5628 /* Loop for each device bus entry */
5629 for (i = 0, bus = mode_page->bus;
5630 i < mode_page->num_entries;
5631 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5632 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5633 dev_err(&ioa_cfg->pdev->dev,
5634 "Invalid resource address reported: 0x%08X\n",
5635 IPR_GET_PHYS_LOC(bus->res_addr));
5636 continue;
5637 }
5638
5639 bus_attr = &ioa_cfg->bus_attr[i];
5640 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5641 bus->bus_width = bus_attr->bus_width;
5642 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5643 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5644 if (bus_attr->qas_enabled)
5645 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5646 else
5647 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5648 }
5649}
5650
5651/**
5652 * ipr_build_mode_select - Build a mode select command
5653 * @ipr_cmd: ipr command struct
5654 * @res_handle: resource handle to send command to
5655 * @parm: Byte 2 of Mode Sense command
5656 * @dma_addr: DMA buffer address
5657 * @xfer_len: data transfer length
5658 *
5659 * Return value:
5660 * none
5661 **/
5662static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5663 __be32 res_handle, u8 parm, u32 dma_addr,
5664 u8 xfer_len)
5665{
5666 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5667 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5668
5669 ioarcb->res_handle = res_handle;
5670 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5671 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5672 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5673 ioarcb->cmd_pkt.cdb[1] = parm;
5674 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5675
5676 ioadl->flags_and_data_len =
5677 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5678 ioadl->address = cpu_to_be32(dma_addr);
5679 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5680 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5681}
5682
5683/**
5684 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5685 * @ipr_cmd: ipr command struct
5686 *
5687 * This function sets up the SCSI bus attributes and sends
5688 * a Mode Select for Page 28 to activate them.
5689 *
5690 * Return value:
5691 * IPR_RC_JOB_RETURN
5692 **/
5693static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5694{
5695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5696 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5697 int length;
5698
5699 ENTER;
4733804c
BK		 5700 ipr_scsi_bus_speed_limit(ioa_cfg);
5701 ipr_check_term_power(ioa_cfg, mode_pages);
5702 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5703 length = mode_pages->hdr.length + 1;
5704 mode_pages->hdr.length = 0;
1da177e4
LT		 5705
5706 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5707 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5708 length);
5709
62275040 5710 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5711 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5712
5713 LEAVE;
5714 return IPR_RC_JOB_RETURN;
5715}
5716
5717/**
5718 * ipr_build_mode_sense - Builds a mode sense command
5719 * @ipr_cmd: ipr command struct
5720 * @res: resource entry struct
5721 * @parm: Byte 2 of mode sense command
5722 * @dma_addr: DMA address of mode sense buffer
5723 * @xfer_len: Size of DMA buffer
5724 *
5725 * Return value:
5726 * none
5727 **/
5728static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5729 __be32 res_handle,
5730 u8 parm, u32 dma_addr, u8 xfer_len)
5731{
5732 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5733 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5734
5735 ioarcb->res_handle = res_handle;
5736 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5737 ioarcb->cmd_pkt.cdb[2] = parm;
5738 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5739 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5740
5741 ioadl->flags_and_data_len =
5742 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5743 ioadl->address = cpu_to_be32(dma_addr);
5744 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5745 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5746}
5747
dfed823e
BK		 5748/**
5749 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5750 * @ipr_cmd: ipr command struct
5751 *
5752 * This function handles the failure of an IOA bringup command.
5753 *
5754 * Return value:
5755 * IPR_RC_JOB_RETURN
5756 **/
5757static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5758{
5759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5760 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5761
5762 dev_err(&ioa_cfg->pdev->dev,
5763 "0x%02X failed with IOASC: 0x%08X\n",
5764 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5765
5766 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5767 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5768 return IPR_RC_JOB_RETURN;
5769}
5770
5771/**
5772 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5773 * @ipr_cmd: ipr command struct
5774 *
5775 * This function handles the failure of a Mode Sense to the IOAFP.
5776 * Some adapters do not handle all mode pages.
5777 *
5778 * Return value:
5779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5780 **/
5781static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5782{
5783 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5784
5785 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5786 ipr_cmd->job_step = ipr_setup_write_cache;
5787 return IPR_RC_JOB_CONTINUE;
5788 }
5789
5790 return ipr_reset_cmd_failed(ipr_cmd);
5791}
5792
1da177e4
LT		 5793/**
5794 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5795 * @ipr_cmd: ipr command struct
5796 *
5797 * This function send a Page 28 mode sense to the IOA to
5798 * retrieve SCSI bus attributes.
5799 *
5800 * Return value:
5801 * IPR_RC_JOB_RETURN
5802 **/
5803static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5804{
5805 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5806
5807 ENTER;
5808 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5809 0x28, ioa_cfg->vpd_cbs_dma +
5810 offsetof(struct ipr_misc_cbs, mode_pages),
5811 sizeof(struct ipr_mode_pages));
5812
5813 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5814 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5815
5816 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5817
5818 LEAVE;
5819 return IPR_RC_JOB_RETURN;
5820}
5821
ac09c349
BK		 5822/**
5823 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5824 * @ipr_cmd: ipr command struct
5825 *
5826 * This function enables dual IOA RAID support if possible.
5827 *
5828 * Return value:
5829 * IPR_RC_JOB_RETURN
5830 **/
5831static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5832{
5833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5834 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5835 struct ipr_mode_page24 *mode_page;
5836 int length;
5837
5838 ENTER;
5839 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5840 sizeof(struct ipr_mode_page24));
5841
5842 if (mode_page)
5843 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5844
5845 length = mode_pages->hdr.length + 1;
5846 mode_pages->hdr.length = 0;
5847
5848 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5849 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5850 length);
5851
5852 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5853 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5854
5855 LEAVE;
5856 return IPR_RC_JOB_RETURN;
5857}
5858
5859/**
5860 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5861 * @ipr_cmd: ipr command struct
5862 *
5863 * This function handles the failure of a Mode Sense to the IOAFP.
5864 * Some adapters do not handle all mode pages.
5865 *
5866 * Return value:
5867 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5868 **/
5869static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5870{
5871 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5872
5873 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5874 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5875 return IPR_RC_JOB_CONTINUE;
5876 }
5877
5878 return ipr_reset_cmd_failed(ipr_cmd);
5879}
5880
5881/**
5882 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5883 * @ipr_cmd: ipr command struct
5884 *
5885 * This function send a mode sense to the IOA to retrieve
5886 * the IOA Advanced Function Control mode page.
5887 *
5888 * Return value:
5889 * IPR_RC_JOB_RETURN
5890 **/
5891static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5892{
5893 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5894
5895 ENTER;
5896 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5897 0x24, ioa_cfg->vpd_cbs_dma +
5898 offsetof(struct ipr_misc_cbs, mode_pages),
5899 sizeof(struct ipr_mode_pages));
5900
5901 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5902 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5903
5904 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5905
5906 LEAVE;
5907 return IPR_RC_JOB_RETURN;
5908}
5909
1da177e4
LT		 5910/**
5911 * ipr_init_res_table - Initialize the resource table
5912 * @ipr_cmd: ipr command struct
5913 *
5914 * This function looks through the existing resource table, comparing
5915 * it with the config table. This function will take care of old/new
5916 * devices and schedule adding/removing them from the mid-layer
5917 * as appropriate.
5918 *
5919 * Return value:
5920 * IPR_RC_JOB_CONTINUE
5921 **/
5922static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5923{
5924 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5925 struct ipr_resource_entry *res, *temp;
5926 struct ipr_config_table_entry *cfgte;
5927 int found, i;
5928 LIST_HEAD(old_res);
5929
5930 ENTER;
5931 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5932 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5933
5934 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5935 list_move_tail(&res->queue, &old_res);
5936
5937 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5938 cfgte = &ioa_cfg->cfg_table->dev[i];
5939 found = 0;
5940
5941 list_for_each_entry_safe(res, temp, &old_res, queue) {
5942 if (!memcmp(&res->cfgte.res_addr,
5943 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5944 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5945 found = 1;
5946 break;
5947 }
5948 }
5949
5950 if (!found) {
5951 if (list_empty(&ioa_cfg->free_res_q)) {
5952 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5953 break;
5954 }
5955
5956 found = 1;
5957 res = list_entry(ioa_cfg->free_res_q.next,
5958 struct ipr_resource_entry, queue);
5959 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5960 ipr_init_res_entry(res);
5961 res->add_to_ml = 1;
5962 }
5963
5964 if (found)
5965 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5966 }
5967
5968 list_for_each_entry_safe(res, temp, &old_res, queue) {
5969 if (res->sdev) {
5970 res->del_from_ml = 1;
1121b794 5971 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5972 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5973 } else {
5974 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5975 }
5976 }
5977
ac09c349
BK		 5978 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5979 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5980 else
5981 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5982
5983 LEAVE;
5984 return IPR_RC_JOB_CONTINUE;
5985}
5986
5987/**
5988 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5989 * @ipr_cmd: ipr command struct
5990 *
5991 * This function sends a Query IOA Configuration command
5992 * to the adapter to retrieve the IOA configuration table.
5993 *
5994 * Return value:
5995 * IPR_RC_JOB_RETURN
5996 **/
5997static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5998{
5999 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6000 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6001 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6002 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6003 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6004
6005 ENTER;
ac09c349
BK		 6006 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6007 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6008 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6009 ucode_vpd->major_release, ucode_vpd->card_type,
6010 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6011 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6012 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6013
6014 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6015 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6016 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6017
6018 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6019 ioarcb->read_data_transfer_length =
6020 cpu_to_be32(sizeof(struct ipr_config_table));
6021
6022 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6023 ioadl->flags_and_data_len =
6024 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6025
6026 ipr_cmd->job_step = ipr_init_res_table;
6027
6028 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6029
6030 LEAVE;
6031 return IPR_RC_JOB_RETURN;
6032}
6033
6034/**
6035 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6036 * @ipr_cmd: ipr command struct
6037 *
6038 * This utility function sends an inquiry to the adapter.
6039 *
6040 * Return value:
6041 * none
6042 **/
6043static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6044 u32 dma_addr, u8 xfer_len)
6045{
6046 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6047 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6048
6049 ENTER;
6050 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6051 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6052
6053 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6054 ioarcb->cmd_pkt.cdb[1] = flags;
6055 ioarcb->cmd_pkt.cdb[2] = page;
6056 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6057
6058 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6059 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6060
6061 ioadl->address = cpu_to_be32(dma_addr);
6062 ioadl->flags_and_data_len =
6063 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6064
6065 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6066 LEAVE;
6067}
6068
62275040
BK		 6069/**
6070 * ipr_inquiry_page_supported - Is the given inquiry page supported
6071 * @page0: inquiry page 0 buffer
6072 * @page: page code.
6073 *
6074 * This function determines if the specified inquiry page is supported.
6075 *
6076 * Return value:
6077 * 1 if page is supported / 0 if not
6078 **/
6079static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6080{
6081 int i;
6082
6083 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6084 if (page0->page[i] == page)
6085 return 1;
6086
6087 return 0;
6088}
6089
ac09c349
BK		 6090/**
6091 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6092 * @ipr_cmd: ipr command struct
6093 *
6094 * This function sends a Page 0xD0 inquiry to the adapter
6095 * to retrieve adapter capabilities.
6096 *
6097 * Return value:
6098 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6099 **/
6100static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6101{
6102 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6103 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6104 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6105
6106 ENTER;
6107 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6108 memset(cap, 0, sizeof(*cap));
6109
6110 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6111 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6112 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6113 sizeof(struct ipr_inquiry_cap));
6114 return IPR_RC_JOB_RETURN;
6115 }
6116
6117 LEAVE;
6118 return IPR_RC_JOB_CONTINUE;
6119}
6120
1da177e4
LT		 6121/**
6122 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6123 * @ipr_cmd: ipr command struct
6124 *
6125 * This function sends a Page 3 inquiry to the adapter
6126 * to retrieve software VPD information.
6127 *
6128 * Return value:
6129 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6130 **/
6131static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6132{
6133 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6134 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6135
6136 ENTER;
6137
6138 if (!ipr_inquiry_page_supported(page0, 1))
6139 ioa_cfg->cache_state = CACHE_NONE;
6140
ac09c349 6141 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6142
6143 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6144 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6145 sizeof(struct ipr_inquiry_page3));
6146
6147 LEAVE;
6148 return IPR_RC_JOB_RETURN;
6149}
6150
6151/**
6152 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6153 * @ipr_cmd: ipr command struct
6154 *
6155 * This function sends a Page 0 inquiry to the adapter
6156 * to retrieve supported inquiry pages.
6157 *
6158 * Return value:
6159 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6160 **/
6161static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6162{
6163 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6164 char type[5];
6165
6166 ENTER;
6167
6168 /* Grab the type out of the VPD and store it away */
6169 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6170 type[4] = '\0';
6171 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6172
62275040 6173 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6174
62275040
BK		 6175 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6176 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6177 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6178
6179 LEAVE;
6180 return IPR_RC_JOB_RETURN;
6181}
6182
6183/**
6184 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6185 * @ipr_cmd: ipr command struct
6186 *
6187 * This function sends a standard inquiry to the adapter.
6188 *
6189 * Return value:
6190 * IPR_RC_JOB_RETURN
6191 **/
6192static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6193{
6194 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6195
6196 ENTER;
62275040 6197 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6198
6199 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6200 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6201 sizeof(struct ipr_ioa_vpd));
6202
6203 LEAVE;
6204 return IPR_RC_JOB_RETURN;
6205}
6206
6207/**
6208 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6209 * @ipr_cmd: ipr command struct
6210 *
6211 * This function send an Identify Host Request Response Queue
6212 * command to establish the HRRQ with the adapter.
6213 *
6214 * Return value:
6215 * IPR_RC_JOB_RETURN
6216 **/
6217static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6218{
6219 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6220 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6221
6222 ENTER;
6223 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6224
6225 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6226 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6227
6228 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6229 ioarcb->cmd_pkt.cdb[2] =
6230 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6231 ioarcb->cmd_pkt.cdb[3] =
6232 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6233 ioarcb->cmd_pkt.cdb[4] =
6234 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6235 ioarcb->cmd_pkt.cdb[5] =
6236 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6237 ioarcb->cmd_pkt.cdb[7] =
6238 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6239 ioarcb->cmd_pkt.cdb[8] =
6240 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6241
6242 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6243
6244 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6245
6246 LEAVE;
6247 return IPR_RC_JOB_RETURN;
6248}
6249
6250/**
6251 * ipr_reset_timer_done - Adapter reset timer function
6252 * @ipr_cmd: ipr command struct
6253 *
6254 * Description: This function is used in adapter reset processing
6255 * for timing events. If the reset_cmd pointer in the IOA
6256 * config struct is not this adapter's we are doing nested
6257 * resets and fail_all_ops will take care of freeing the
6258 * command block.
6259 *
6260 * Return value:
6261 * none
6262 **/
6263static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6264{
6265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6266 unsigned long lock_flags = 0;
6267
6268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6269
6270 if (ioa_cfg->reset_cmd == ipr_cmd) {
6271 list_del(&ipr_cmd->queue);
6272 ipr_cmd->done(ipr_cmd);
6273 }
6274
6275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6276}
6277
6278/**
6279 * ipr_reset_start_timer - Start a timer for adapter reset job
6280 * @ipr_cmd: ipr command struct
6281 * @timeout: timeout value
6282 *
6283 * Description: This function is used in adapter reset processing
6284 * for timing events. If the reset_cmd pointer in the IOA
6285 * config struct is not this adapter's we are doing nested
6286 * resets and fail_all_ops will take care of freeing the
6287 * command block.
6288 *
6289 * Return value:
6290 * none
6291 **/
6292static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6293 unsigned long timeout)
6294{
6295 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6296 ipr_cmd->done = ipr_reset_ioa_job;
6297
6298 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6299 ipr_cmd->timer.expires = jiffies + timeout;
6300 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6301 add_timer(&ipr_cmd->timer);
6302}
6303
6304/**
6305 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6306 * @ioa_cfg: ioa cfg struct
6307 *
6308 * Return value:
6309 * nothing
6310 **/
6311static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6312{
6313 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6314
6315 /* Initialize Host RRQ pointers */
6316 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6317 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6318 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6319 ioa_cfg->toggle_bit = 1;
6320
6321 /* Zero out config table */
6322 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6323}
6324
6325/**
6326 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6327 * @ipr_cmd: ipr command struct
6328 *
6329 * This function reinitializes some control blocks and
6330 * enables destructive diagnostics on the adapter.
6331 *
6332 * Return value:
6333 * IPR_RC_JOB_RETURN
6334 **/
6335static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6336{
6337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6338 volatile u32 int_reg;
6339
6340 ENTER;
6341 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6342 ipr_init_ioa_mem(ioa_cfg);
6343
6344 ioa_cfg->allow_interrupts = 1;
6345 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6346
6347 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6348 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6349 ioa_cfg->regs.clr_interrupt_mask_reg);
6350 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6351 return IPR_RC_JOB_CONTINUE;
6352 }
6353
6354 /* Enable destructive diagnostics on IOA */
3d1d0da6 6355 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6356
6357 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6358 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6359
6360 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6361
6362 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6363 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6364 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6365 ipr_cmd->done = ipr_reset_ioa_job;
6366 add_timer(&ipr_cmd->timer);
6367 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6368
6369 LEAVE;
6370 return IPR_RC_JOB_RETURN;
6371}
6372
6373/**
6374 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6375 * @ipr_cmd: ipr command struct
6376 *
6377 * This function is invoked when an adapter dump has run out
6378 * of processing time.
6379 *
6380 * Return value:
6381 * IPR_RC_JOB_CONTINUE
6382 **/
6383static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6384{
6385 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6386
6387 if (ioa_cfg->sdt_state == GET_DUMP)
6388 ioa_cfg->sdt_state = ABORT_DUMP;
6389
6390 ipr_cmd->job_step = ipr_reset_alert;
6391
6392 return IPR_RC_JOB_CONTINUE;
6393}
6394
6395/**
6396 * ipr_unit_check_no_data - Log a unit check/no data error log
6397 * @ioa_cfg: ioa config struct
6398 *
6399 * Logs an error indicating the adapter unit checked, but for some
6400 * reason, we were unable to fetch the unit check buffer.
6401 *
6402 * Return value:
6403 * nothing
6404 **/
6405static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6406{
6407 ioa_cfg->errors_logged++;
6408 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6409}
6410
6411/**
6412 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6413 * @ioa_cfg: ioa config struct
6414 *
6415 * Fetches the unit check buffer from the adapter by clocking the data
6416 * through the mailbox register.
6417 *
6418 * Return value:
6419 * nothing
6420 **/
6421static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6422{
6423 unsigned long mailbox;
6424 struct ipr_hostrcb *hostrcb;
6425 struct ipr_uc_sdt sdt;
6426 int rc, length;
65f56475 6427 u32 ioasc;
1da177e4
LT		 6428
6429 mailbox = readl(ioa_cfg->ioa_mailbox);
6430
6431 if (!ipr_sdt_is_fmt2(mailbox)) {
6432 ipr_unit_check_no_data(ioa_cfg);
6433 return;
6434 }
6435
6436 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6437 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6438 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6439
6440 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6441 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6442 ipr_unit_check_no_data(ioa_cfg);
6443 return;
6444 }
6445
6446 /* Find length of the first sdt entry (UC buffer) */
6447 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6448 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6449
6450 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6451 struct ipr_hostrcb, queue);
6452 list_del(&hostrcb->queue);
6453 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6454
6455 rc = ipr_get_ldump_data_section(ioa_cfg,
6456 be32_to_cpu(sdt.entry[0].bar_str_offset),
6457 (__be32 *)&hostrcb->hcam,
6458 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6459
65f56475 6460 if (!rc) {
1da177e4 6461 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6462 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6463 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6464 ioa_cfg->sdt_state == GET_DUMP)
6465 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6466 } else
1da177e4
LT		 6467 ipr_unit_check_no_data(ioa_cfg);
6468
6469 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6470}
6471
6472/**
6473 * ipr_reset_restore_cfg_space - Restore PCI config space.
6474 * @ipr_cmd: ipr command struct
6475 *
6476 * Description: This function restores the saved PCI config space of
6477 * the adapter, fails all outstanding ops back to the callers, and
6478 * fetches the dump/unit check if applicable to this reset.
6479 *
6480 * Return value:
6481 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6482 **/
6483static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6484{
6485 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6486 int rc;
6487
6488 ENTER;
6489 rc = pci_restore_state(ioa_cfg->pdev);
6490
6491 if (rc != PCIBIOS_SUCCESSFUL) {
6492 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6493 return IPR_RC_JOB_CONTINUE;
6494 }
6495
6496 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6497 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6498 return IPR_RC_JOB_CONTINUE;
6499 }
6500
6501 ipr_fail_all_ops(ioa_cfg);
6502
6503 if (ioa_cfg->ioa_unit_checked) {
6504 ioa_cfg->ioa_unit_checked = 0;
6505 ipr_get_unit_check_buffer(ioa_cfg);
6506 ipr_cmd->job_step = ipr_reset_alert;
6507 ipr_reset_start_timer(ipr_cmd, 0);
6508 return IPR_RC_JOB_RETURN;
6509 }
6510
6511 if (ioa_cfg->in_ioa_bringdown) {
6512 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6513 } else {
6514 ipr_cmd->job_step = ipr_reset_enable_ioa;
6515
6516 if (GET_DUMP == ioa_cfg->sdt_state) {
6517 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6518 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6519 schedule_work(&ioa_cfg->work_q);
6520 return IPR_RC_JOB_RETURN;
6521 }
6522 }
6523
6524 ENTER;
6525 return IPR_RC_JOB_CONTINUE;
6526}
6527
e619e1a7
BK		 6528/**
6529 * ipr_reset_bist_done - BIST has completed on the adapter.
6530 * @ipr_cmd: ipr command struct
6531 *
6532 * Description: Unblock config space and resume the reset process.
6533 *
6534 * Return value:
6535 * IPR_RC_JOB_CONTINUE
6536 **/
6537static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6538{
6539 ENTER;
6540 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6541 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6542 LEAVE;
6543 return IPR_RC_JOB_CONTINUE;
6544}
6545
1da177e4
LT		 6546/**
6547 * ipr_reset_start_bist - Run BIST on the adapter.
6548 * @ipr_cmd: ipr command struct
6549 *
6550 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6551 *
6552 * Return value:
6553 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6554 **/
6555static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6556{
6557 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6558 int rc;
6559
6560 ENTER;
b30197d2 6561 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6562 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6563
6564 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6565 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6566 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6567 rc = IPR_RC_JOB_CONTINUE;
6568 } else {
e619e1a7 6569 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6570 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6571 rc = IPR_RC_JOB_RETURN;
6572 }
6573
6574 LEAVE;
6575 return rc;
6576}
6577
463fc696
BK		 6578/**
6579 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6580 * @ipr_cmd: ipr command struct
6581 *
6582 * Description: This clears PCI reset to the adapter and delays two seconds.
6583 *
6584 * Return value:
6585 * IPR_RC_JOB_RETURN
6586 **/
6587static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6588{
6589 ENTER;
6590 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6591 ipr_cmd->job_step = ipr_reset_bist_done;
6592 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6593 LEAVE;
6594 return IPR_RC_JOB_RETURN;
6595}
6596
6597/**
6598 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6599 * @ipr_cmd: ipr command struct
6600 *
6601 * Description: This asserts PCI reset to the adapter.
6602 *
6603 * Return value:
6604 * IPR_RC_JOB_RETURN
6605 **/
6606static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6607{
6608 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6609 struct pci_dev *pdev = ioa_cfg->pdev;
6610
6611 ENTER;
6612 pci_block_user_cfg_access(pdev);
6613 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6614 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6615 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6616 LEAVE;
6617 return IPR_RC_JOB_RETURN;
6618}
6619
1da177e4
LT		 6620/**
6621 * ipr_reset_allowed - Query whether or not IOA can be reset
6622 * @ioa_cfg: ioa config struct
6623 *
6624 * Return value:
6625 * 0 if reset not allowed / non-zero if reset is allowed
6626 **/
6627static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6628{
6629 volatile u32 temp_reg;
6630
6631 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6632 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6633}
6634
6635/**
6636 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6637 * @ipr_cmd: ipr command struct
6638 *
6639 * Description: This function waits for adapter permission to run BIST,
6640 * then runs BIST. If the adapter does not give permission after a
6641 * reasonable time, we will reset the adapter anyway. The impact of
6642 * resetting the adapter without warning the adapter is the risk of
6643 * losing the persistent error log on the adapter. If the adapter is
6644 * reset while it is writing to the flash on the adapter, the flash
6645 * segment will have bad ECC and be zeroed.
6646 *
6647 * Return value:
6648 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6649 **/
6650static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6651{
6652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6653 int rc = IPR_RC_JOB_RETURN;
6654
6655 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6656 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6657 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6658 } else {
463fc696 6659 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6660 rc = IPR_RC_JOB_CONTINUE;
6661 }
6662
6663 return rc;
6664}
6665
6666/**
6667 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6668 * @ipr_cmd: ipr command struct
6669 *
6670 * Description: This function alerts the adapter that it will be reset.
6671 * If memory space is not currently enabled, proceed directly
6672 * to running BIST on the adapter. The timer must always be started
6673 * so we guarantee we do not run BIST from ipr_isr.
6674 *
6675 * Return value:
6676 * IPR_RC_JOB_RETURN
6677 **/
6678static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6679{
6680 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6681 u16 cmd_reg;
6682 int rc;
6683
6684 ENTER;
6685 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6686
6687 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6688 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6689 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6690 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6691 } else {
463fc696 6692 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6693 }
6694
6695 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6696 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6697
6698 LEAVE;
6699 return IPR_RC_JOB_RETURN;
6700}
6701
6702/**
6703 * ipr_reset_ucode_download_done - Microcode download completion
6704 * @ipr_cmd: ipr command struct
6705 *
6706 * Description: This function unmaps the microcode download buffer.
6707 *
6708 * Return value:
6709 * IPR_RC_JOB_CONTINUE
6710 **/
6711static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6712{
6713 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6714 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6715
6716 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6717 sglist->num_sg, DMA_TO_DEVICE);
6718
6719 ipr_cmd->job_step = ipr_reset_alert;
6720 return IPR_RC_JOB_CONTINUE;
6721}
6722
6723/**
6724 * ipr_reset_ucode_download - Download microcode to the adapter
6725 * @ipr_cmd: ipr command struct
6726 *
6727 * Description: This function checks to see if it there is microcode
6728 * to download to the adapter. If there is, a download is performed.
6729 *
6730 * Return value:
6731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6732 **/
6733static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6734{
6735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6736 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6737
6738 ENTER;
6739 ipr_cmd->job_step = ipr_reset_alert;
6740
6741 if (!sglist)
6742 return IPR_RC_JOB_CONTINUE;
6743
6744 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6745 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6746 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6747 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6748 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6749 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6750 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6751
12baa420 6752 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6753 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6754
6755 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6756 IPR_WRITE_BUFFER_TIMEOUT);
6757
6758 LEAVE;
6759 return IPR_RC_JOB_RETURN;
6760}
6761
6762/**
6763 * ipr_reset_shutdown_ioa - Shutdown the adapter
6764 * @ipr_cmd: ipr command struct
6765 *
6766 * Description: This function issues an adapter shutdown of the
6767 * specified type to the specified adapter as part of the
6768 * adapter reset job.
6769 *
6770 * Return value:
6771 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6772 **/
6773static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6774{
6775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6776 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6777 unsigned long timeout;
6778 int rc = IPR_RC_JOB_CONTINUE;
6779
6780 ENTER;
6781 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6782 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6783 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6784 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6785 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6786
ac09c349
BK		 6787 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6788 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6789 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6790 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6791 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6792 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6793 else
ac09c349 6794 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6795
6796 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6797
6798 rc = IPR_RC_JOB_RETURN;
6799 ipr_cmd->job_step = ipr_reset_ucode_download;
6800 } else
6801 ipr_cmd->job_step = ipr_reset_alert;
6802
6803 LEAVE;
6804 return rc;
6805}
6806
6807/**
6808 * ipr_reset_ioa_job - Adapter reset job
6809 * @ipr_cmd: ipr command struct
6810 *
6811 * Description: This function is the job router for the adapter reset job.
6812 *
6813 * Return value:
6814 * none
6815 **/
6816static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6817{
6818 u32 rc, ioasc;
1da177e4
LT		 6819 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6820
6821 do {
6822 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6823
6824 if (ioa_cfg->reset_cmd != ipr_cmd) {
6825 /*
6826 * We are doing nested adapter resets and this is
6827 * not the current reset job.
6828 */
6829 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6830 return;
6831 }
6832
6833 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6834 rc = ipr_cmd->job_step_failed(ipr_cmd);
6835 if (rc == IPR_RC_JOB_RETURN)
6836 return;
1da177e4
LT		 6837 }
6838
6839 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6840 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6841 rc = ipr_cmd->job_step(ipr_cmd);
6842 } while(rc == IPR_RC_JOB_CONTINUE);
6843}
6844
6845/**
6846 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6847 * @ioa_cfg: ioa config struct
6848 * @job_step: first job step of reset job
6849 * @shutdown_type: shutdown type
6850 *
6851 * Description: This function will initiate the reset of the given adapter
6852 * starting at the selected job step.
6853 * If the caller needs to wait on the completion of the reset,
6854 * the caller must sleep on the reset_wait_q.
6855 *
6856 * Return value:
6857 * none
6858 **/
6859static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6860 int (*job_step) (struct ipr_cmnd *),
6861 enum ipr_shutdown_type shutdown_type)
6862{
6863 struct ipr_cmnd *ipr_cmd;
6864
6865 ioa_cfg->in_reset_reload = 1;
6866 ioa_cfg->allow_cmds = 0;
6867 scsi_block_requests(ioa_cfg->host);
6868
6869 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6870 ioa_cfg->reset_cmd = ipr_cmd;
6871 ipr_cmd->job_step = job_step;
6872 ipr_cmd->u.shutdown_type = shutdown_type;
6873
6874 ipr_reset_ioa_job(ipr_cmd);
6875}
6876
6877/**
6878 * ipr_initiate_ioa_reset - Initiate an adapter reset
6879 * @ioa_cfg: ioa config struct
6880 * @shutdown_type: shutdown type
6881 *
6882 * Description: This function will initiate the reset of the given adapter.
6883 * If the caller needs to wait on the completion of the reset,
6884 * the caller must sleep on the reset_wait_q.
6885 *
6886 * Return value:
6887 * none
6888 **/
6889static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6890 enum ipr_shutdown_type shutdown_type)
6891{
6892 if (ioa_cfg->ioa_is_dead)
6893 return;
6894
6895 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6896 ioa_cfg->sdt_state = ABORT_DUMP;
6897
6898 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6899 dev_err(&ioa_cfg->pdev->dev,
6900 "IOA taken offline - error recovery failed\n");
6901
6902 ioa_cfg->reset_retries = 0;
6903 ioa_cfg->ioa_is_dead = 1;
6904
6905 if (ioa_cfg->in_ioa_bringdown) {
6906 ioa_cfg->reset_cmd = NULL;
6907 ioa_cfg->in_reset_reload = 0;
6908 ipr_fail_all_ops(ioa_cfg);
6909 wake_up_all(&ioa_cfg->reset_wait_q);
6910
6911 spin_unlock_irq(ioa_cfg->host->host_lock);
6912 scsi_unblock_requests(ioa_cfg->host);
6913 spin_lock_irq(ioa_cfg->host->host_lock);
6914 return;
6915 } else {
6916 ioa_cfg->in_ioa_bringdown = 1;
6917 shutdown_type = IPR_SHUTDOWN_NONE;
6918 }
6919 }
6920
6921 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6922 shutdown_type);
6923}
6924
f8a88b19
LV		 6925/**
6926 * ipr_reset_freeze - Hold off all I/O activity
6927 * @ipr_cmd: ipr command struct
6928 *
6929 * Description: If the PCI slot is frozen, hold off all I/O
6930 * activity; then, as soon as the slot is available again,
6931 * initiate an adapter reset.
6932 */
6933static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6934{
6935 /* Disallow new interrupts, avoid loop */
6936 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6937 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6938 ipr_cmd->done = ipr_reset_ioa_job;
6939 return IPR_RC_JOB_RETURN;
6940}
6941
6942/**
6943 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6944 * @pdev: PCI device struct
6945 *
6946 * Description: This routine is called to tell us that the PCI bus
6947 * is down. Can't do anything here, except put the device driver
6948 * into a holding pattern, waiting for the PCI bus to come back.
6949 */
6950static void ipr_pci_frozen(struct pci_dev *pdev)
6951{
6952 unsigned long flags = 0;
6953 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6954
6955 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6956 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6957 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6958}
6959
6960/**
6961 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6962 * @pdev: PCI device struct
6963 *
6964 * Description: This routine is called by the pci error recovery
6965 * code after the PCI slot has been reset, just before we
6966 * should resume normal operations.
6967 */
6968static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6969{
6970 unsigned long flags = 0;
6971 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6972
6973 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6974 if (ioa_cfg->needs_warm_reset)
6975 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6976 else
6977 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6978 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6980 return PCI_ERS_RESULT_RECOVERED;
6981}
6982
6983/**
6984 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6985 * @pdev: PCI device struct
6986 *
6987 * Description: This routine is called when the PCI bus has
6988 * permanently failed.
6989 */
6990static void ipr_pci_perm_failure(struct pci_dev *pdev)
6991{
6992 unsigned long flags = 0;
6993 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6994
6995 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6996 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6997 ioa_cfg->sdt_state = ABORT_DUMP;
6998 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6999 ioa_cfg->in_ioa_bringdown = 1;
7000 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7002}
7003
7004/**
7005 * ipr_pci_error_detected - Called when a PCI error is detected.
7006 * @pdev: PCI device struct
7007 * @state: PCI channel state
7008 *
7009 * Description: Called when a PCI error is detected.
7010 *
7011 * Return value:
7012 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7013 */
7014static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7015 pci_channel_state_t state)
7016{
7017 switch (state) {
7018 case pci_channel_io_frozen:
7019 ipr_pci_frozen(pdev);
7020 return PCI_ERS_RESULT_NEED_RESET;
7021 case pci_channel_io_perm_failure:
7022 ipr_pci_perm_failure(pdev);
7023 return PCI_ERS_RESULT_DISCONNECT;
7024 break;
7025 default:
7026 break;
7027 }
7028 return PCI_ERS_RESULT_NEED_RESET;
7029}
7030
1da177e4
LT		 7031/**
7032 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7033 * @ioa_cfg: ioa cfg struct
7034 *
7035 * Description: This is the second phase of adapter intialization
7036 * This function takes care of initilizing the adapter to the point
7037 * where it can accept new commands.
7038
7039 * Return value:
b1c11812 7040 * 0 on success / -EIO on failure
1da177e4
LT		 7041 **/
7042static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7043{
7044 int rc = 0;
7045 unsigned long host_lock_flags = 0;
7046
7047 ENTER;
7048 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7049 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7050 if (ioa_cfg->needs_hard_reset) {
7051 ioa_cfg->needs_hard_reset = 0;
7052 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7053 } else
7054 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7055 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7056
7057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7058 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7059 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7060
7061 if (ioa_cfg->ioa_is_dead) {
7062 rc = -EIO;
7063 } else if (ipr_invalid_adapter(ioa_cfg)) {
7064 if (!ipr_testmode)
7065 rc = -EIO;
7066
7067 dev_err(&ioa_cfg->pdev->dev,
7068 "Adapter not supported in this hardware configuration.\n");
7069 }
7070
7071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7072
7073 LEAVE;
7074 return rc;
7075}
7076
7077/**
7078 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7079 * @ioa_cfg: ioa config struct
7080 *
7081 * Return value:
7082 * none
7083 **/
7084static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7085{
7086 int i;
7087
7088 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7089 if (ioa_cfg->ipr_cmnd_list[i])
7090 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7091 ioa_cfg->ipr_cmnd_list[i],
7092 ioa_cfg->ipr_cmnd_list_dma[i]);
7093
7094 ioa_cfg->ipr_cmnd_list[i] = NULL;
7095 }
7096
7097 if (ioa_cfg->ipr_cmd_pool)
7098 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7099
7100 ioa_cfg->ipr_cmd_pool = NULL;
7101}
7102
7103/**
7104 * ipr_free_mem - Frees memory allocated for an adapter
7105 * @ioa_cfg: ioa cfg struct
7106 *
7107 * Return value:
7108 * nothing
7109 **/
7110static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7111{
7112 int i;
7113
7114 kfree(ioa_cfg->res_entries);
7115 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7116 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7117 ipr_free_cmd_blks(ioa_cfg);
7118 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7119 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7120 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7121 ioa_cfg->cfg_table,
7122 ioa_cfg->cfg_table_dma);
7123
7124 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7125 pci_free_consistent(ioa_cfg->pdev,
7126 sizeof(struct ipr_hostrcb),
7127 ioa_cfg->hostrcb[i],
7128 ioa_cfg->hostrcb_dma[i]);
7129 }
7130
7131 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7132 kfree(ioa_cfg->trace);
7133}
7134
7135/**
7136 * ipr_free_all_resources - Free all allocated resources for an adapter.
7137 * @ipr_cmd: ipr command struct
7138 *
7139 * This function frees all allocated resources for the
7140 * specified adapter.
7141 *
7142 * Return value:
7143 * none
7144 **/
7145static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7146{
7147 struct pci_dev *pdev = ioa_cfg->pdev;
7148
7149 ENTER;
7150 free_irq(pdev->irq, ioa_cfg);
7151 iounmap(ioa_cfg->hdw_dma_regs);
7152 pci_release_regions(pdev);
7153 ipr_free_mem(ioa_cfg);
7154 scsi_host_put(ioa_cfg->host);
7155 pci_disable_device(pdev);
7156 LEAVE;
7157}
7158
7159/**
7160 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7161 * @ioa_cfg: ioa config struct
7162 *
7163 * Return value:
7164 * 0 on success / -ENOMEM on allocation failure
7165 **/
7166static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7167{
7168 struct ipr_cmnd *ipr_cmd;
7169 struct ipr_ioarcb *ioarcb;
7170 dma_addr_t dma_addr;
7171 int i;
7172
7173 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7174 sizeof(struct ipr_cmnd), 8, 0);
7175
7176 if (!ioa_cfg->ipr_cmd_pool)
7177 return -ENOMEM;
7178
7179 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7180 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7181
7182 if (!ipr_cmd) {
7183 ipr_free_cmd_blks(ioa_cfg);
7184 return -ENOMEM;
7185 }
7186
7187 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7188 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7189 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7190
7191 ioarcb = &ipr_cmd->ioarcb;
7192 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7193 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7194 ioarcb->write_ioadl_addr =
7195 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7196 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7197 ioarcb->ioasa_host_pci_addr =
7198 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7199 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7200 ipr_cmd->cmd_index = i;
7201 ipr_cmd->ioa_cfg = ioa_cfg;
7202 ipr_cmd->sense_buffer_dma = dma_addr +
7203 offsetof(struct ipr_cmnd, sense_buffer);
7204
7205 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7206 }
7207
7208 return 0;
7209}
7210
7211/**
7212 * ipr_alloc_mem - Allocate memory for an adapter
7213 * @ioa_cfg: ioa config struct
7214 *
7215 * Return value:
7216 * 0 on success / non-zero for error
7217 **/
7218static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7219{
7220 struct pci_dev *pdev = ioa_cfg->pdev;
7221 int i, rc = -ENOMEM;
7222
7223 ENTER;
0bc42e35 7224 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7225 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7226
7227 if (!ioa_cfg->res_entries)
7228 goto out;
7229
1da177e4
LT		 7230 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7231 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7232
7233 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7234 sizeof(struct ipr_misc_cbs),
7235 &ioa_cfg->vpd_cbs_dma);
7236
7237 if (!ioa_cfg->vpd_cbs)
7238 goto out_free_res_entries;
7239
7240 if (ipr_alloc_cmd_blks(ioa_cfg))
7241 goto out_free_vpd_cbs;
7242
7243 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7244 sizeof(u32) * IPR_NUM_CMD_BLKS,
7245 &ioa_cfg->host_rrq_dma);
7246
7247 if (!ioa_cfg->host_rrq)
7248 goto out_ipr_free_cmd_blocks;
7249
7250 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7251 sizeof(struct ipr_config_table),
7252 &ioa_cfg->cfg_table_dma);
7253
7254 if (!ioa_cfg->cfg_table)
7255 goto out_free_host_rrq;
7256
7257 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7258 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7259 sizeof(struct ipr_hostrcb),
7260 &ioa_cfg->hostrcb_dma[i]);
7261
7262 if (!ioa_cfg->hostrcb[i])
7263 goto out_free_hostrcb_dma;
7264
7265 ioa_cfg->hostrcb[i]->hostrcb_dma =
7266 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7267 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7268 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7269 }
7270
0bc42e35 7271 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7272 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7273
7274 if (!ioa_cfg->trace)
7275 goto out_free_hostrcb_dma;
7276
1da177e4
LT		 7277 rc = 0;
7278out:
7279 LEAVE;
7280 return rc;
7281
7282out_free_hostrcb_dma:
7283 while (i-- > 0) {
7284 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7285 ioa_cfg->hostrcb[i],
7286 ioa_cfg->hostrcb_dma[i]);
7287 }
7288 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7289 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7290out_free_host_rrq:
7291 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7292 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7293out_ipr_free_cmd_blocks:
7294 ipr_free_cmd_blks(ioa_cfg);
7295out_free_vpd_cbs:
7296 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7297 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7298out_free_res_entries:
7299 kfree(ioa_cfg->res_entries);
7300 goto out;
7301}
7302
7303/**
7304 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7305 * @ioa_cfg: ioa config struct
7306 *
7307 * Return value:
7308 * none
7309 **/
7310static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7311{
7312 int i;
7313
7314 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7315 ioa_cfg->bus_attr[i].bus = i;
7316 ioa_cfg->bus_attr[i].qas_enabled = 0;
7317 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7318 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7319 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7320 else
7321 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7322 }
7323}
7324
7325/**
7326 * ipr_init_ioa_cfg - Initialize IOA config struct
7327 * @ioa_cfg: ioa config struct
7328 * @host: scsi host struct
7329 * @pdev: PCI dev struct
7330 *
7331 * Return value:
7332 * none
7333 **/
7334static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7335 struct Scsi_Host *host, struct pci_dev *pdev)
7336{
7337 const struct ipr_interrupt_offsets *p;
7338 struct ipr_interrupts *t;
7339 void __iomem *base;
7340
7341 ioa_cfg->host = host;
7342 ioa_cfg->pdev = pdev;
7343 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7344 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7345 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7346 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7347 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7348 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7349 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7350 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7351 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7352 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7353
7354 INIT_LIST_HEAD(&ioa_cfg->free_q);
7355 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7356 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7357 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7358 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7359 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7360 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7361 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7362 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7363 if (ipr_enable_cache)
7364 ioa_cfg->cache_state = CACHE_ENABLED;
7365 else
7366 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7367
7368 ipr_initialize_bus_attr(ioa_cfg);
7369
7370 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7371 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7372 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7373 host->unique_id = host->host_no;
7374 host->max_cmd_len = IPR_MAX_CDB_LEN;
7375 pci_set_drvdata(pdev, ioa_cfg);
7376
7377 p = &ioa_cfg->chip_cfg->regs;
7378 t = &ioa_cfg->regs;
7379 base = ioa_cfg->hdw_dma_regs;
7380
7381 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7382 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7383 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7384 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7385 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7386 t->ioarrin_reg = base + p->ioarrin_reg;
7387 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7388 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7389 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7390}
7391
7392/**
7393 * ipr_get_chip_cfg - Find adapter chip configuration
7394 * @dev_id: PCI device id struct
7395 *
7396 * Return value:
7397 * ptr to chip config on success / NULL on failure
7398 **/
7399static const struct ipr_chip_cfg_t * __devinit
7400ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7401{
7402 int i;
7403
1da177e4
LT		 7404 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7405 if (ipr_chip[i].vendor == dev_id->vendor &&
7406 ipr_chip[i].device == dev_id->device)
7407 return ipr_chip[i].cfg;
7408 return NULL;
7409}
7410
7411/**
7412 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7413 * @pdev: PCI device struct
7414 * @dev_id: PCI device id struct
7415 *
7416 * Return value:
7417 * 0 on success / non-zero on failure
7418 **/
7419static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7420 const struct pci_device_id *dev_id)
7421{
7422 struct ipr_ioa_cfg *ioa_cfg;
7423 struct Scsi_Host *host;
7424 unsigned long ipr_regs_pci;
7425 void __iomem *ipr_regs;
a2a65a3e 7426 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7427 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7428
7429 ENTER;
7430
7431 if ((rc = pci_enable_device(pdev))) {
7432 dev_err(&pdev->dev, "Cannot enable adapter\n");
7433 goto out;
7434 }
7435
7436 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7437
7438 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7439
7440 if (!host) {
7441 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7442 rc = -ENOMEM;
7443 goto out_disable;
7444 }
7445
7446 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7447 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7448 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7449 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7450
7451 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7452
7453 if (!ioa_cfg->chip_cfg) {
7454 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7455 dev_id->vendor, dev_id->device);
7456 goto out_scsi_host_put;
7457 }
7458
5469cb5b
BK		 7459 if (ipr_transop_timeout)
7460 ioa_cfg->transop_timeout = ipr_transop_timeout;
7461 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7462 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7463 else
7464 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7465
44c10138 7466 ioa_cfg->revid = pdev->revision;
463fc696 7467
1da177e4
LT		 7468 ipr_regs_pci = pci_resource_start(pdev, 0);
7469
7470 rc = pci_request_regions(pdev, IPR_NAME);
7471 if (rc < 0) {
7472 dev_err(&pdev->dev,
7473 "Couldn't register memory range of registers\n");
7474 goto out_scsi_host_put;
7475 }
7476
7477 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7478
7479 if (!ipr_regs) {
7480 dev_err(&pdev->dev,
7481 "Couldn't map memory range of registers\n");
7482 rc = -ENOMEM;
7483 goto out_release_regions;
7484 }
7485
7486 ioa_cfg->hdw_dma_regs = ipr_regs;
7487 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7488 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7489
7490 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7491
7492 pci_set_master(pdev);
7493
7494 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7495 if (rc < 0) {
7496 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7497 goto cleanup_nomem;
7498 }
7499
7500 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7501 ioa_cfg->chip_cfg->cache_line_size);
7502
7503 if (rc != PCIBIOS_SUCCESSFUL) {
7504 dev_err(&pdev->dev, "Write of cache line size failed\n");
7505 rc = -EIO;
7506 goto cleanup_nomem;
7507 }
7508
7509 /* Save away PCI config space for use following IOA reset */
7510 rc = pci_save_state(pdev);
7511
7512 if (rc != PCIBIOS_SUCCESSFUL) {
7513 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7514 rc = -EIO;
7515 goto cleanup_nomem;
7516 }
7517
7518 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7519 goto cleanup_nomem;
7520
7521 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7522 goto cleanup_nomem;
7523
7524 rc = ipr_alloc_mem(ioa_cfg);
7525 if (rc < 0) {
7526 dev_err(&pdev->dev,
7527 "Couldn't allocate enough memory for device driver!\n");
7528 goto cleanup_nomem;
7529 }
7530
ce155cce
BK		 7531 /*
7532 * If HRRQ updated interrupt is not masked, or reset alert is set,
7533 * the card is in an unknown state and needs a hard reset
7534 */
7535 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7536 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7537 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7538 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7539 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7540 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7541 ioa_cfg->needs_hard_reset = 1;
7542 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7543 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7544
1da177e4 7545 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7546 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7547
7548 if (rc) {
7549 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7550 pdev->irq, rc);
7551 goto cleanup_nolog;
7552 }
7553
463fc696
BK		 7554 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7555 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7556 ioa_cfg->needs_warm_reset = 1;
7557 ioa_cfg->reset = ipr_reset_slot_reset;
7558 } else
7559 ioa_cfg->reset = ipr_reset_start_bist;
7560
1da177e4
LT		 7561 spin_lock(&ipr_driver_lock);
7562 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7563 spin_unlock(&ipr_driver_lock);
7564
7565 LEAVE;
7566out:
7567 return rc;
7568
7569cleanup_nolog:
7570 ipr_free_mem(ioa_cfg);
7571cleanup_nomem:
7572 iounmap(ipr_regs);
7573out_release_regions:
7574 pci_release_regions(pdev);
7575out_scsi_host_put:
7576 scsi_host_put(host);
7577out_disable:
7578 pci_disable_device(pdev);
7579 goto out;
7580}
7581
7582/**
7583 * ipr_scan_vsets - Scans for VSET devices
7584 * @ioa_cfg: ioa config struct
7585 *
7586 * Description: Since the VSET resources do not follow SAM in that we can have
7587 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7588 *
7589 * Return value:
7590 * none
7591 **/
7592static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7593{
7594 int target, lun;
7595
7596 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7597 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7598 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7599}
7600
7601/**
7602 * ipr_initiate_ioa_bringdown - Bring down an adapter
7603 * @ioa_cfg: ioa config struct
7604 * @shutdown_type: shutdown type
7605 *
7606 * Description: This function will initiate bringing down the adapter.
7607 * This consists of issuing an IOA shutdown to the adapter
7608 * to flush the cache, and running BIST.
7609 * If the caller needs to wait on the completion of the reset,
7610 * the caller must sleep on the reset_wait_q.
7611 *
7612 * Return value:
7613 * none
7614 **/
7615static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7616 enum ipr_shutdown_type shutdown_type)
7617{
7618 ENTER;
7619 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7620 ioa_cfg->sdt_state = ABORT_DUMP;
7621 ioa_cfg->reset_retries = 0;
7622 ioa_cfg->in_ioa_bringdown = 1;
7623 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7624 LEAVE;
7625}
7626
7627/**
7628 * __ipr_remove - Remove a single adapter
7629 * @pdev: pci device struct
7630 *
7631 * Adapter hot plug remove entry point.
7632 *
7633 * Return value:
7634 * none
7635 **/
7636static void __ipr_remove(struct pci_dev *pdev)
7637{
7638 unsigned long host_lock_flags = 0;
7639 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7640 ENTER;
7641
7642 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7643 while(ioa_cfg->in_reset_reload) {
7644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7645 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7646 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7647 }
7648
1da177e4
LT		 7649 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7650
7651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7652 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7653 flush_scheduled_work();
1da177e4
LT		 7654 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7655
7656 spin_lock(&ipr_driver_lock);
7657 list_del(&ioa_cfg->queue);
7658 spin_unlock(&ipr_driver_lock);
7659
7660 if (ioa_cfg->sdt_state == ABORT_DUMP)
7661 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7662 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7663
7664 ipr_free_all_resources(ioa_cfg);
7665
7666 LEAVE;
7667}
7668
7669/**
7670 * ipr_remove - IOA hot plug remove entry point
7671 * @pdev: pci device struct
7672 *
7673 * Adapter hot plug remove entry point.
7674 *
7675 * Return value:
7676 * none
7677 **/
7678static void ipr_remove(struct pci_dev *pdev)
7679{
7680 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7681
7682 ENTER;
7683
ee959b00 7684 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4 7685 &ipr_trace_attr);
ee959b00 7686 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7687 &ipr_dump_attr);
7688 scsi_remove_host(ioa_cfg->host);
7689
7690 __ipr_remove(pdev);
7691
7692 LEAVE;
7693}
7694
7695/**
7696 * ipr_probe - Adapter hot plug add entry point
7697 *
7698 * Return value:
7699 * 0 on success / non-zero on failure
7700 **/
7701static int __devinit ipr_probe(struct pci_dev *pdev,
7702 const struct pci_device_id *dev_id)
7703{
7704 struct ipr_ioa_cfg *ioa_cfg;
7705 int rc;
7706
7707 rc = ipr_probe_ioa(pdev, dev_id);
7708
7709 if (rc)
7710 return rc;
7711
7712 ioa_cfg = pci_get_drvdata(pdev);
7713 rc = ipr_probe_ioa_part2(ioa_cfg);
7714
7715 if (rc) {
7716 __ipr_remove(pdev);
7717 return rc;
7718 }
7719
7720 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7721
7722 if (rc) {
7723 __ipr_remove(pdev);
7724 return rc;
7725 }
7726
ee959b00 7727 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7728 &ipr_trace_attr);
7729
7730 if (rc) {
7731 scsi_remove_host(ioa_cfg->host);
7732 __ipr_remove(pdev);
7733 return rc;
7734 }
7735
ee959b00 7736 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7737 &ipr_dump_attr);
7738
7739 if (rc) {
ee959b00 7740 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7741 &ipr_trace_attr);
7742 scsi_remove_host(ioa_cfg->host);
7743 __ipr_remove(pdev);
7744 return rc;
7745 }
7746
7747 scsi_scan_host(ioa_cfg->host);
7748 ipr_scan_vsets(ioa_cfg);
7749 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7750 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7751 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7752 schedule_work(&ioa_cfg->work_q);
7753 return 0;
7754}
7755
7756/**
7757 * ipr_shutdown - Shutdown handler.
d18c3db5 7758 * @pdev: pci device struct
1da177e4
LT		 7759 *
7760 * This function is invoked upon system shutdown/reboot. It will issue
7761 * an adapter shutdown to the adapter to flush the write cache.
7762 *
7763 * Return value:
7764 * none
7765 **/
d18c3db5 7766static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7767{
d18c3db5 7768 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7769 unsigned long lock_flags = 0;
7770
7771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7772 while(ioa_cfg->in_reset_reload) {
7773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7774 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7775 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7776 }
7777
1da177e4
LT		 7778 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7779 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7780 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7781}
7782
7783static struct pci_device_id ipr_pci_table[] __devinitdata = {
7784 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7785 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7786 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7787 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7788 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7789 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7790 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7791 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7792 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7793 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7794 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7795 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7796 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7797 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7798 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7799 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7800 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7801 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7803 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 7804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7805 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7806 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7807 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7808 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7809 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7811 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_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_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7816 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7817 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7818 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7819 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7820 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7821 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7822 IPR_USE_LONG_TRANSOP_TIMEOUT },
7823 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7824 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7825 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7827 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7828 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7829 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7830 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7832 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7834 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7835 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7837 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7838 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7840 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7841 { }
7842};
7843MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7844
f8a88b19
LV		 7845static struct pci_error_handlers ipr_err_handler = {
7846 .error_detected = ipr_pci_error_detected,
7847 .slot_reset = ipr_pci_slot_reset,
7848};
7849
1da177e4
LT		 7850static struct pci_driver ipr_driver = {
7851 .name = IPR_NAME,
7852 .id_table = ipr_pci_table,
7853 .probe = ipr_probe,
7854 .remove = ipr_remove,
d18c3db5 7855 .shutdown = ipr_shutdown,
f8a88b19 7856 .err_handler = &ipr_err_handler,
68c96e59 7857 .dynids.use_driver_data = 1
1da177e4
LT		 7858};
7859
7860/**
7861 * ipr_init - Module entry point
7862 *
7863 * Return value:
7864 * 0 on success / negative value on failure
7865 **/
7866static int __init ipr_init(void)
7867{
7868 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7869 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7870
dcbccbde 7871 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7872}
7873
7874/**
7875 * ipr_exit - Module unload
7876 *
7877 * Module unload entry point.
7878 *
7879 * Return value:
7880 * none
7881 **/
7882static void __exit ipr_exit(void)
7883{
7884 pci_unregister_driver(&ipr_driver);
7885}
7886
7887module_init(ipr_init);
7888module_exit(ipr_exit);
ubuntu-zesty-kernel mirror