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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
CommitLineData
1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
1da177e4
LT		 57#include <linux/fs.h>
58#include <linux/init.h>
59#include <linux/types.h>
60#include <linux/errno.h>
61#include <linux/kernel.h>
62#include <linux/ioport.h>
63#include <linux/delay.h>
64#include <linux/pci.h>
65#include <linux/wait.h>
66#include <linux/spinlock.h>
67#include <linux/sched.h>
68#include <linux/interrupt.h>
69#include <linux/blkdev.h>
70#include <linux/firmware.h>
71#include <linux/module.h>
72#include <linux/moduleparam.h>
35a39691 73#include <linux/libata.h>
0ce3a7e5 74#include <linux/hdreg.h>
1da177e4
LT		 75#include <asm/io.h>
76#include <asm/irq.h>
77#include <asm/processor.h>
78#include <scsi/scsi.h>
79#include <scsi/scsi_host.h>
80#include <scsi/scsi_tcq.h>
81#include <scsi/scsi_eh.h>
82#include <scsi/scsi_cmnd.h>
1da177e4
LT		 83#include "ipr.h"
84
85/*
86 * Global Data
87 */
b7d68ca3 88static LIST_HEAD(ipr_ioa_head);
1da177e4
LT		 89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
5469cb5b 93static unsigned int ipr_transop_timeout = 0;
62275040 94static unsigned int ipr_enable_cache = 1;
d3c74871 95static unsigned int ipr_debug = 0;
ac09c349 96static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 97static DEFINE_SPINLOCK(ipr_driver_lock);
98
99/* This table describes the differences between DMA controller chips */
100static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 101 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131};
132
133static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436
BK		 136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
60e7486b 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
1da177e4
LT		 139 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
140 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
141};
142
143static int ipr_max_bus_speeds [] = {
144 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145};
146
147MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
148MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
149module_param_named(max_speed, ipr_max_speed, uint, 0);
150MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
151module_param_named(log_level, ipr_log_level, uint, 0);
152MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
153module_param_named(testmode, ipr_testmode, int, 0);
154MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
155module_param_named(fastfail, ipr_fastfail, int, 0);
156MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
157module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
158MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
62275040
BK		 159module_param_named(enable_cache, ipr_enable_cache, int, 0);
160MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 161module_param_named(debug, ipr_debug, int, 0);
162MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 163module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
164MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
1da177e4
LT		 165MODULE_LICENSE("GPL");
166MODULE_VERSION(IPR_DRIVER_VERSION);
167
1da177e4
LT		 168/* A constant array of IOASCs/URCs/Error Messages */
169static const
170struct ipr_error_table_t ipr_error_table[] = {
933916f3 171 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 172 "8155: An unknown error was received"},
173 {0x00330000, 0, 0,
174 "Soft underlength error"},
175 {0x005A0000, 0, 0,
176 "Command to be cancelled not found"},
177 {0x00808000, 0, 0,
178 "Qualified success"},
933916f3 179 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 180 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 181 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 182 "4101: Soft device bus fabric error"},
933916f3 183 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 184 "FFF9: Device sector reassign successful"},
933916f3 185 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 186 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 187 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 188 "7001: IOA sector reassignment successful"},
933916f3 189 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 190 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 191 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 192 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 193 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 194 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 195 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 196 "FFF6: Device hardware error recovered by the IOA"},
933916f3 197 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 198 "FFF6: Device hardware error recovered by the device"},
933916f3 199 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 200 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 201 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 202 "FFFA: Undefined device response recovered by the IOA"},
933916f3 203 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 204 "FFF6: Device bus error, message or command phase"},
933916f3 205 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 206 "FFFE: Task Management Function failed"},
933916f3 207 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 208 "FFF6: Failure prediction threshold exceeded"},
933916f3 209 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 210 "8009: Impending cache battery pack failure"},
211 {0x02040400, 0, 0,
212 "34FF: Disk device format in progress"},
65f56475
BK		 213 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
214 "9070: IOA requested reset"},
1da177e4
LT		 215 {0x023F0000, 0, 0,
216 "Synchronization required"},
217 {0x024E0000, 0, 0,
218 "No ready, IOA shutdown"},
219 {0x025A0000, 0, 0,
220 "Not ready, IOA has been shutdown"},
933916f3 221 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 222 "3020: Storage subsystem configuration error"},
223 {0x03110B00, 0, 0,
224 "FFF5: Medium error, data unreadable, recommend reassign"},
225 {0x03110C00, 0, 0,
226 "7000: Medium error, data unreadable, do not reassign"},
933916f3 227 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 228 "FFF3: Disk media format bad"},
933916f3 229 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 230 "3002: Addressed device failed to respond to selection"},
933916f3 231 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 232 "3100: Device bus error"},
933916f3 233 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 234 "3109: IOA timed out a device command"},
235 {0x04088000, 0, 0,
236 "3120: SCSI bus is not operational"},
933916f3 237 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 238 "4100: Hard device bus fabric error"},
933916f3 239 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 240 "9000: IOA reserved area data check"},
933916f3 241 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 242 "9001: IOA reserved area invalid data pattern"},
933916f3 243 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 244 "9002: IOA reserved area LRC error"},
933916f3 245 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 246 "102E: Out of alternate sectors for disk storage"},
933916f3 247 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 248 "FFF4: Data transfer underlength error"},
933916f3 249 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 250 "FFF4: Data transfer overlength error"},
933916f3 251 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 252 "3400: Logical unit failure"},
933916f3 253 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 254 "FFF4: Device microcode is corrupt"},
933916f3 255 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 256 "8150: PCI bus error"},
257 {0x04430000, 1, 0,
258 "Unsupported device bus message received"},
933916f3 259 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 260 "FFF4: Disk device problem"},
933916f3 261 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 262 "8150: Permanent IOA failure"},
933916f3 263 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 264 "3010: Disk device returned wrong response to IOA"},
933916f3 265 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 266 "8151: IOA microcode error"},
267 {0x04448500, 0, 0,
268 "Device bus status error"},
933916f3 269 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 270 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 271 {0x04448700, 0, 0,
272 "ATA device status error"},
1da177e4
LT		 273 {0x04490000, 0, 0,
274 "Message reject received from the device"},
933916f3 275 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 276 "8008: A permanent cache battery pack failure occurred"},
933916f3 277 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 278 "9090: Disk unit has been modified after the last known status"},
933916f3 279 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 280 "9081: IOA detected device error"},
933916f3 281 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 282 "9082: IOA detected device error"},
933916f3 283 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 284 "3110: Device bus error, message or command phase"},
933916f3 285 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 286 "3110: SAS Command / Task Management Function failed"},
933916f3 287 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 288 "9091: Incorrect hardware configuration change has been detected"},
933916f3 289 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 290 "9073: Invalid multi-adapter configuration"},
933916f3 291 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 292 "4010: Incorrect connection between cascaded expanders"},
933916f3 293 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 294 "4020: Connections exceed IOA design limits"},
933916f3 295 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 296 "4030: Incorrect multipath connection"},
933916f3 297 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 298 "4110: Unsupported enclosure function"},
933916f3 299 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 300 "FFF4: Command to logical unit failed"},
301 {0x05240000, 1, 0,
302 "Illegal request, invalid request type or request packet"},
303 {0x05250000, 0, 0,
304 "Illegal request, invalid resource handle"},
b0df54bb
BK		 305 {0x05258000, 0, 0,
306 "Illegal request, commands not allowed to this device"},
307 {0x05258100, 0, 0,
308 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 309 {0x05260000, 0, 0,
310 "Illegal request, invalid field in parameter list"},
311 {0x05260100, 0, 0,
312 "Illegal request, parameter not supported"},
313 {0x05260200, 0, 0,
314 "Illegal request, parameter value invalid"},
315 {0x052C0000, 0, 0,
316 "Illegal request, command sequence error"},
b0df54bb
BK		 317 {0x052C8000, 1, 0,
318 "Illegal request, dual adapter support not enabled"},
933916f3 319 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 320 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 321 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 322 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 323 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 324 "3140: Device bus not ready to ready transition"},
933916f3 325 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 326 "FFFB: SCSI bus was reset"},
327 {0x06290500, 0, 0,
328 "FFFE: SCSI bus transition to single ended"},
329 {0x06290600, 0, 0,
330 "FFFE: SCSI bus transition to LVD"},
933916f3 331 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 332 "FFFB: SCSI bus was reset by another initiator"},
933916f3 333 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 334 "3029: A device replacement has occurred"},
933916f3 335 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 336 "9051: IOA cache data exists for a missing or failed device"},
933916f3 337 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 339 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 340 "9025: Disk unit is not supported at its physical location"},
933916f3 341 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 342 "3020: IOA detected a SCSI bus configuration error"},
933916f3 343 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 344 "3150: SCSI bus configuration error"},
933916f3 345 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 346 "9074: Asymmetric advanced function disk configuration"},
933916f3 347 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 348 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 349 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 350 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 351 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 352 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 353 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 354 "9076: Configuration error, missing remote IOA"},
933916f3 355 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 356 "4050: Enclosure does not support a required multipath function"},
933916f3 357 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 358 "9041: Array protection temporarily suspended"},
933916f3 359 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 360 "9042: Corrupt array parity detected on specified device"},
933916f3 361 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 362 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 363 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 364 "9071: Link operational transition"},
933916f3 365 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 366 "9072: Link not operational transition"},
933916f3 367 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 368 "9032: Array exposed but still protected"},
e435340c
BK		 369 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
370 "70DD: Device forced failed by disrupt device command"},
933916f3 371 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 372 "4061: Multipath redundancy level got better"},
933916f3 373 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 374 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 375 {0x07270000, 0, 0,
376 "Failure due to other device"},
933916f3 377 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 378 "9008: IOA does not support functions expected by devices"},
933916f3 379 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 380 "9010: Cache data associated with attached devices cannot be found"},
933916f3 381 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 382 "9011: Cache data belongs to devices other than those attached"},
933916f3 383 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 384 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 385 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 386 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 387 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 388 "9022: Exposed array is missing a required device"},
933916f3 389 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 390 "9023: Array member(s) not at required physical locations"},
933916f3 391 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 392 "9024: Array not functional due to present hardware configuration"},
933916f3 393 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 394 "9026: Array not functional due to present hardware configuration"},
933916f3 395 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 396 "9027: Array is missing a device and parity is out of sync"},
933916f3 397 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 398 "9028: Maximum number of arrays already exist"},
933916f3 399 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 400 "9050: Required cache data cannot be located for a disk unit"},
933916f3 401 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 402 "9052: Cache data exists for a device that has been modified"},
933916f3 403 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 404 "9054: IOA resources not available due to previous problems"},
933916f3 405 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 406 "9092: Disk unit requires initialization before use"},
933916f3 407 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 408 "9029: Incorrect hardware configuration change has been detected"},
933916f3 409 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 410 "9060: One or more disk pairs are missing from an array"},
933916f3 411 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 412 "9061: One or more disks are missing from an array"},
933916f3 413 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 414 "9062: One or more disks are missing from an array"},
933916f3 415 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 416 "9063: Maximum number of functional arrays has been exceeded"},
417 {0x0B260000, 0, 0,
418 "Aborted command, invalid descriptor"},
419 {0x0B5A0000, 0, 0,
420 "Command terminated by host"}
421};
422
423static const struct ipr_ses_table_entry ipr_ses_table[] = {
424 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
426 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
427 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
428 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
429 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
430 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
432 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
434 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
435 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
436 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
437};
438
439/*
440 * Function Prototypes
441 */
442static int ipr_reset_alert(struct ipr_cmnd *);
443static void ipr_process_ccn(struct ipr_cmnd *);
444static void ipr_process_error(struct ipr_cmnd *);
445static void ipr_reset_ioa_job(struct ipr_cmnd *);
446static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
447 enum ipr_shutdown_type);
448
449#ifdef CONFIG_SCSI_IPR_TRACE
450/**
451 * ipr_trc_hook - Add a trace entry to the driver trace
452 * @ipr_cmd: ipr command struct
453 * @type: trace type
454 * @add_data: additional data
455 *
456 * Return value:
457 * none
458 **/
459static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
460 u8 type, u32 add_data)
461{
462 struct ipr_trace_entry *trace_entry;
463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
464
465 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
466 trace_entry->time = jiffies;
467 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
468 trace_entry->type = type;
35a39691
BK		 469 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
470 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 471 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
472 trace_entry->u.add_data = add_data;
473}
474#else
475#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
476#endif
477
478/**
479 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
480 * @ipr_cmd: ipr command struct
481 *
482 * Return value:
483 * none
484 **/
485static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
486{
487 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
488 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
51b1c7e1 489 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 490
491 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
492 ioarcb->write_data_transfer_length = 0;
493 ioarcb->read_data_transfer_length = 0;
494 ioarcb->write_ioadl_len = 0;
495 ioarcb->read_ioadl_len = 0;
51b1c7e1
BK		 496 ioarcb->write_ioadl_addr =
497 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
498 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 499 ioasa->ioasc = 0;
500 ioasa->residual_data_len = 0;
35a39691 501 ioasa->u.gata.status = 0;
1da177e4
LT		 502
503 ipr_cmd->scsi_cmd = NULL;
35a39691 504 ipr_cmd->qc = NULL;
1da177e4
LT		 505 ipr_cmd->sense_buffer[0] = 0;
506 ipr_cmd->dma_use_sg = 0;
507}
508
509/**
510 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
511 * @ipr_cmd: ipr command struct
512 *
513 * Return value:
514 * none
515 **/
516static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
517{
518 ipr_reinit_ipr_cmnd(ipr_cmd);
519 ipr_cmd->u.scratch = 0;
520 ipr_cmd->sibling = NULL;
521 init_timer(&ipr_cmd->timer);
522}
523
524/**
525 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
526 * @ioa_cfg: ioa config struct
527 *
528 * Return value:
529 * pointer to ipr command struct
530 **/
531static
532struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
533{
534 struct ipr_cmnd *ipr_cmd;
535
536 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
537 list_del(&ipr_cmd->queue);
538 ipr_init_ipr_cmnd(ipr_cmd);
539
540 return ipr_cmd;
541}
542
1da177e4
LT		 543/**
544 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
545 * @ioa_cfg: ioa config struct
546 * @clr_ints: interrupts to clear
547 *
548 * This function masks all interrupts on the adapter, then clears the
549 * interrupts specified in the mask
550 *
551 * Return value:
552 * none
553 **/
554static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
555 u32 clr_ints)
556{
557 volatile u32 int_reg;
558
559 /* Stop new interrupts */
560 ioa_cfg->allow_interrupts = 0;
561
562 /* Set interrupt mask to stop all new interrupts */
563 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
564
565 /* Clear any pending interrupts */
566 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
567 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
568}
569
570/**
571 * ipr_save_pcix_cmd_reg - Save PCI-X command register
572 * @ioa_cfg: ioa config struct
573 *
574 * Return value:
575 * 0 on success / -EIO on failure
576 **/
577static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
578{
579 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
580
7dce0e1c
BK		 581 if (pcix_cmd_reg == 0)
582 return 0;
1da177e4
LT		 583
584 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
585 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
586 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
587 return -EIO;
588 }
589
590 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
591 return 0;
592}
593
594/**
595 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
596 * @ioa_cfg: ioa config struct
597 *
598 * Return value:
599 * 0 on success / -EIO on failure
600 **/
601static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
602{
603 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
604
605 if (pcix_cmd_reg) {
606 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
607 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
608 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
609 return -EIO;
610 }
1da177e4
LT		 611 }
612
613 return 0;
614}
615
35a39691
BK		 616/**
617 * ipr_sata_eh_done - done function for aborted SATA commands
618 * @ipr_cmd: ipr command struct
619 *
620 * This function is invoked for ops generated to SATA
621 * devices which are being aborted.
622 *
623 * Return value:
624 * none
625 **/
626static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
627{
628 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
629 struct ata_queued_cmd *qc = ipr_cmd->qc;
630 struct ipr_sata_port *sata_port = qc->ap->private_data;
631
632 qc->err_mask |= AC_ERR_OTHER;
633 sata_port->ioasa.status |= ATA_BUSY;
634 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
635 ata_qc_complete(qc);
636}
637
1da177e4
LT		 638/**
639 * ipr_scsi_eh_done - mid-layer done function for aborted ops
640 * @ipr_cmd: ipr command struct
641 *
642 * This function is invoked by the interrupt handler for
643 * ops generated by the SCSI mid-layer which are being aborted.
644 *
645 * Return value:
646 * none
647 **/
648static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
649{
650 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
651 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
652
653 scsi_cmd->result |= (DID_ERROR << 16);
654
63015bc9 655 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 656 scsi_cmd->scsi_done(scsi_cmd);
657 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
658}
659
660/**
661 * ipr_fail_all_ops - Fails all outstanding ops.
662 * @ioa_cfg: ioa config struct
663 *
664 * This function fails all outstanding ops.
665 *
666 * Return value:
667 * none
668 **/
669static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
670{
671 struct ipr_cmnd *ipr_cmd, *temp;
672
673 ENTER;
674 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
675 list_del(&ipr_cmd->queue);
676
677 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
678 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
679
680 if (ipr_cmd->scsi_cmd)
681 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 682 else if (ipr_cmd->qc)
683 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 684
685 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
686 del_timer(&ipr_cmd->timer);
687 ipr_cmd->done(ipr_cmd);
688 }
689
690 LEAVE;
691}
692
693/**
694 * ipr_do_req - Send driver initiated requests.
695 * @ipr_cmd: ipr command struct
696 * @done: done function
697 * @timeout_func: timeout function
698 * @timeout: timeout value
699 *
700 * This function sends the specified command to the adapter with the
701 * timeout given. The done function is invoked on command completion.
702 *
703 * Return value:
704 * none
705 **/
706static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
707 void (*done) (struct ipr_cmnd *),
708 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
709{
710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
711
712 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
713
714 ipr_cmd->done = done;
715
716 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
717 ipr_cmd->timer.expires = jiffies + timeout;
718 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
719
720 add_timer(&ipr_cmd->timer);
721
722 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
723
724 mb();
725 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
726 ioa_cfg->regs.ioarrin_reg);
727}
728
729/**
730 * ipr_internal_cmd_done - Op done function for an internally generated op.
731 * @ipr_cmd: ipr command struct
732 *
733 * This function is the op done function for an internally generated,
734 * blocking op. It simply wakes the sleeping thread.
735 *
736 * Return value:
737 * none
738 **/
739static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
740{
741 if (ipr_cmd->sibling)
742 ipr_cmd->sibling = NULL;
743 else
744 complete(&ipr_cmd->completion);
745}
746
747/**
748 * ipr_send_blocking_cmd - Send command and sleep on its completion.
749 * @ipr_cmd: ipr command struct
750 * @timeout_func: function to invoke if command times out
751 * @timeout: timeout
752 *
753 * Return value:
754 * none
755 **/
756static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
757 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
758 u32 timeout)
759{
760 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
761
762 init_completion(&ipr_cmd->completion);
763 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
764
765 spin_unlock_irq(ioa_cfg->host->host_lock);
766 wait_for_completion(&ipr_cmd->completion);
767 spin_lock_irq(ioa_cfg->host->host_lock);
768}
769
770/**
771 * ipr_send_hcam - Send an HCAM to the adapter.
772 * @ioa_cfg: ioa config struct
773 * @type: HCAM type
774 * @hostrcb: hostrcb struct
775 *
776 * This function will send a Host Controlled Async command to the adapter.
777 * If HCAMs are currently not allowed to be issued to the adapter, it will
778 * place the hostrcb on the free queue.
779 *
780 * Return value:
781 * none
782 **/
783static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
784 struct ipr_hostrcb *hostrcb)
785{
786 struct ipr_cmnd *ipr_cmd;
787 struct ipr_ioarcb *ioarcb;
788
789 if (ioa_cfg->allow_cmds) {
790 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
791 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
792 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
793
794 ipr_cmd->u.hostrcb = hostrcb;
795 ioarcb = &ipr_cmd->ioarcb;
796
797 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
798 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
799 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
800 ioarcb->cmd_pkt.cdb[1] = type;
801 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
802 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
803
804 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
805 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
806 ipr_cmd->ioadl[0].flags_and_data_len =
807 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
808 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
809
810 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
811 ipr_cmd->done = ipr_process_ccn;
812 else
813 ipr_cmd->done = ipr_process_error;
814
815 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
816
817 mb();
818 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
819 ioa_cfg->regs.ioarrin_reg);
820 } else {
821 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
822 }
823}
824
825/**
826 * ipr_init_res_entry - Initialize a resource entry struct.
827 * @res: resource entry struct
828 *
829 * Return value:
830 * none
831 **/
832static void ipr_init_res_entry(struct ipr_resource_entry *res)
833{
ee0a90fa 834 res->needs_sync_complete = 0;
1da177e4
LT		 835 res->in_erp = 0;
836 res->add_to_ml = 0;
837 res->del_from_ml = 0;
838 res->resetting_device = 0;
839 res->sdev = NULL;
35a39691 840 res->sata_port = NULL;
1da177e4
LT		 841}
842
843/**
844 * ipr_handle_config_change - Handle a config change from the adapter
845 * @ioa_cfg: ioa config struct
846 * @hostrcb: hostrcb
847 *
848 * Return value:
849 * none
850 **/
851static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
852 struct ipr_hostrcb *hostrcb)
853{
854 struct ipr_resource_entry *res = NULL;
855 struct ipr_config_table_entry *cfgte;
856 u32 is_ndn = 1;
857
858 cfgte = &hostrcb->hcam.u.ccn.cfgte;
859
860 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
861 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
862 sizeof(cfgte->res_addr))) {
863 is_ndn = 0;
864 break;
865 }
866 }
867
868 if (is_ndn) {
869 if (list_empty(&ioa_cfg->free_res_q)) {
870 ipr_send_hcam(ioa_cfg,
871 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
872 hostrcb);
873 return;
874 }
875
876 res = list_entry(ioa_cfg->free_res_q.next,
877 struct ipr_resource_entry, queue);
878
879 list_del(&res->queue);
880 ipr_init_res_entry(res);
881 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
882 }
883
884 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
885
886 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
887 if (res->sdev) {
1da177e4 888 res->del_from_ml = 1;
1121b794 889 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 890 if (ioa_cfg->allow_ml_add_del)
891 schedule_work(&ioa_cfg->work_q);
892 } else
893 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
894 } else if (!res->sdev) {
895 res->add_to_ml = 1;
896 if (ioa_cfg->allow_ml_add_del)
897 schedule_work(&ioa_cfg->work_q);
898 }
899
900 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
901}
902
903/**
904 * ipr_process_ccn - Op done function for a CCN.
905 * @ipr_cmd: ipr command struct
906 *
907 * This function is the op done function for a configuration
908 * change notification host controlled async from the adapter.
909 *
910 * Return value:
911 * none
912 **/
913static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
914{
915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
916 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
917 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
918
919 list_del(&hostrcb->queue);
920 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
921
922 if (ioasc) {
923 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
924 dev_err(&ioa_cfg->pdev->dev,
925 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
926
927 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
928 } else {
929 ipr_handle_config_change(ioa_cfg, hostrcb);
930 }
931}
932
8cf093e2
BK		 933/**
934 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
935 * @i: index into buffer
936 * @buf: string to modify
937 *
938 * This function will strip all trailing whitespace, pad the end
939 * of the string with a single space, and NULL terminate the string.
940 *
941 * Return value:
942 * new length of string
943 **/
944static int strip_and_pad_whitespace(int i, char *buf)
945{
946 while (i && buf[i] == ' ')
947 i--;
948 buf[i+1] = ' ';
949 buf[i+2] = '\0';
950 return i + 2;
951}
952
953/**
954 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
955 * @prefix: string to print at start of printk
956 * @hostrcb: hostrcb pointer
957 * @vpd: vendor/product id/sn struct
958 *
959 * Return value:
960 * none
961 **/
962static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
963 struct ipr_vpd *vpd)
964{
965 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
966 int i = 0;
967
968 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
969 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
970
971 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
972 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
973
974 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
975 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
976
977 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
978}
979
1da177e4
LT		 980/**
981 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 982 * @vpd: vendor/product id/sn struct
1da177e4
LT		 983 *
984 * Return value:
985 * none
986 **/
cfc32139 987static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 988{
989 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
990 + IPR_SERIAL_NUM_LEN];
991
cfc32139
BK		 992 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
993 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 994 IPR_PROD_ID_LEN);
995 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
996 ipr_err("Vendor/Product ID: %s\n", buffer);
997
cfc32139 998 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 999 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1000 ipr_err(" Serial Number: %s\n", buffer);
1001}
1002
8cf093e2
BK		 1003/**
1004 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1005 * @prefix: string to print at start of printk
1006 * @hostrcb: hostrcb pointer
1007 * @vpd: vendor/product id/sn/wwn struct
1008 *
1009 * Return value:
1010 * none
1011 **/
1012static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1013 struct ipr_ext_vpd *vpd)
1014{
1015 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1016 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1017 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1018}
1019
ee0f05b8
BK		 1020/**
1021 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1022 * @vpd: vendor/product id/sn/wwn struct
1023 *
1024 * Return value:
1025 * none
1026 **/
1027static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1028{
1029 ipr_log_vpd(&vpd->vpd);
1030 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1031 be32_to_cpu(vpd->wwid[1]));
1032}
1033
1034/**
1035 * ipr_log_enhanced_cache_error - Log a cache error.
1036 * @ioa_cfg: ioa config struct
1037 * @hostrcb: hostrcb struct
1038 *
1039 * Return value:
1040 * none
1041 **/
1042static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1043 struct ipr_hostrcb *hostrcb)
1044{
1045 struct ipr_hostrcb_type_12_error *error =
1046 &hostrcb->hcam.u.error.u.type_12_error;
1047
1048 ipr_err("-----Current Configuration-----\n");
1049 ipr_err("Cache Directory Card Information:\n");
1050 ipr_log_ext_vpd(&error->ioa_vpd);
1051 ipr_err("Adapter Card Information:\n");
1052 ipr_log_ext_vpd(&error->cfc_vpd);
1053
1054 ipr_err("-----Expected Configuration-----\n");
1055 ipr_err("Cache Directory Card Information:\n");
1056 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1057 ipr_err("Adapter Card Information:\n");
1058 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1059
1060 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1061 be32_to_cpu(error->ioa_data[0]),
1062 be32_to_cpu(error->ioa_data[1]),
1063 be32_to_cpu(error->ioa_data[2]));
1064}
1065
1da177e4
LT		 1066/**
1067 * ipr_log_cache_error - Log a cache error.
1068 * @ioa_cfg: ioa config struct
1069 * @hostrcb: hostrcb struct
1070 *
1071 * Return value:
1072 * none
1073 **/
1074static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1075 struct ipr_hostrcb *hostrcb)
1076{
1077 struct ipr_hostrcb_type_02_error *error =
1078 &hostrcb->hcam.u.error.u.type_02_error;
1079
1080 ipr_err("-----Current Configuration-----\n");
1081 ipr_err("Cache Directory Card Information:\n");
cfc32139 1082 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1083 ipr_err("Adapter Card Information:\n");
cfc32139 1084 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1085
1086 ipr_err("-----Expected Configuration-----\n");
1087 ipr_err("Cache Directory Card Information:\n");
cfc32139 1088 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1089 ipr_err("Adapter Card Information:\n");
cfc32139 1090 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1091
1092 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1093 be32_to_cpu(error->ioa_data[0]),
1094 be32_to_cpu(error->ioa_data[1]),
1095 be32_to_cpu(error->ioa_data[2]));
1096}
1097
ee0f05b8
BK		 1098/**
1099 * ipr_log_enhanced_config_error - Log a configuration error.
1100 * @ioa_cfg: ioa config struct
1101 * @hostrcb: hostrcb struct
1102 *
1103 * Return value:
1104 * none
1105 **/
1106static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1107 struct ipr_hostrcb *hostrcb)
1108{
1109 int errors_logged, i;
1110 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1111 struct ipr_hostrcb_type_13_error *error;
1112
1113 error = &hostrcb->hcam.u.error.u.type_13_error;
1114 errors_logged = be32_to_cpu(error->errors_logged);
1115
1116 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1117 be32_to_cpu(error->errors_detected), errors_logged);
1118
1119 dev_entry = error->dev;
1120
1121 for (i = 0; i < errors_logged; i++, dev_entry++) {
1122 ipr_err_separator;
1123
1124 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1125 ipr_log_ext_vpd(&dev_entry->vpd);
1126
1127 ipr_err("-----New Device Information-----\n");
1128 ipr_log_ext_vpd(&dev_entry->new_vpd);
1129
1130 ipr_err("Cache Directory Card Information:\n");
1131 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1132
1133 ipr_err("Adapter Card Information:\n");
1134 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1135 }
1136}
1137
1da177e4
LT		 1138/**
1139 * ipr_log_config_error - Log a configuration error.
1140 * @ioa_cfg: ioa config struct
1141 * @hostrcb: hostrcb struct
1142 *
1143 * Return value:
1144 * none
1145 **/
1146static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1147 struct ipr_hostrcb *hostrcb)
1148{
1149 int errors_logged, i;
1150 struct ipr_hostrcb_device_data_entry *dev_entry;
1151 struct ipr_hostrcb_type_03_error *error;
1152
1153 error = &hostrcb->hcam.u.error.u.type_03_error;
1154 errors_logged = be32_to_cpu(error->errors_logged);
1155
1156 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1157 be32_to_cpu(error->errors_detected), errors_logged);
1158
cfc32139 1159 dev_entry = error->dev;
1da177e4
LT		 1160
1161 for (i = 0; i < errors_logged; i++, dev_entry++) {
1162 ipr_err_separator;
1163
fa15b1f6 1164 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1165 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1166
1167 ipr_err("-----New Device Information-----\n");
cfc32139 1168 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1169
1170 ipr_err("Cache Directory Card Information:\n");
cfc32139 1171 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1172
1173 ipr_err("Adapter Card Information:\n");
cfc32139 1174 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1175
1176 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1177 be32_to_cpu(dev_entry->ioa_data[0]),
1178 be32_to_cpu(dev_entry->ioa_data[1]),
1179 be32_to_cpu(dev_entry->ioa_data[2]),
1180 be32_to_cpu(dev_entry->ioa_data[3]),
1181 be32_to_cpu(dev_entry->ioa_data[4]));
1182 }
1183}
1184
ee0f05b8
BK		 1185/**
1186 * ipr_log_enhanced_array_error - Log an array configuration error.
1187 * @ioa_cfg: ioa config struct
1188 * @hostrcb: hostrcb struct
1189 *
1190 * Return value:
1191 * none
1192 **/
1193static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1194 struct ipr_hostrcb *hostrcb)
1195{
1196 int i, num_entries;
1197 struct ipr_hostrcb_type_14_error *error;
1198 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1199 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1200
1201 error = &hostrcb->hcam.u.error.u.type_14_error;
1202
1203 ipr_err_separator;
1204
1205 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1206 error->protection_level,
1207 ioa_cfg->host->host_no,
1208 error->last_func_vset_res_addr.bus,
1209 error->last_func_vset_res_addr.target,
1210 error->last_func_vset_res_addr.lun);
1211
1212 ipr_err_separator;
1213
1214 array_entry = error->array_member;
1215 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1216 sizeof(error->array_member));
1217
1218 for (i = 0; i < num_entries; i++, array_entry++) {
1219 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1220 continue;
1221
1222 if (be32_to_cpu(error->exposed_mode_adn) == i)
1223 ipr_err("Exposed Array Member %d:\n", i);
1224 else
1225 ipr_err("Array Member %d:\n", i);
1226
1227 ipr_log_ext_vpd(&array_entry->vpd);
1228 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1229 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1230 "Expected Location");
1231
1232 ipr_err_separator;
1233 }
1234}
1235
1da177e4
LT		 1236/**
1237 * ipr_log_array_error - Log an array configuration error.
1238 * @ioa_cfg: ioa config struct
1239 * @hostrcb: hostrcb struct
1240 *
1241 * Return value:
1242 * none
1243 **/
1244static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1245 struct ipr_hostrcb *hostrcb)
1246{
1247 int i;
1248 struct ipr_hostrcb_type_04_error *error;
1249 struct ipr_hostrcb_array_data_entry *array_entry;
1250 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1251
1252 error = &hostrcb->hcam.u.error.u.type_04_error;
1253
1254 ipr_err_separator;
1255
1256 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1257 error->protection_level,
1258 ioa_cfg->host->host_no,
1259 error->last_func_vset_res_addr.bus,
1260 error->last_func_vset_res_addr.target,
1261 error->last_func_vset_res_addr.lun);
1262
1263 ipr_err_separator;
1264
1265 array_entry = error->array_member;
1266
1267 for (i = 0; i < 18; i++) {
cfc32139 1268 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1269 continue;
1270
fa15b1f6 1271 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1272 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1273 else
1da177e4 1274 ipr_err("Array Member %d:\n", i);
1da177e4 1275
cfc32139 1276 ipr_log_vpd(&array_entry->vpd);
1da177e4 1277
fa15b1f6
BK		 1278 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1279 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1280 "Expected Location");
1da177e4
LT		 1281
1282 ipr_err_separator;
1283
1284 if (i == 9)
1285 array_entry = error->array_member2;
1286 else
1287 array_entry++;
1288 }
1289}
1290
1291/**
b0df54bb 1292 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1293 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1294 * @data: IOA error data
1295 * @len: data length
1da177e4
LT		 1296 *
1297 * Return value:
1298 * none
1299 **/
ac719aba 1300static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1301{
1302 int i;
1da177e4 1303
b0df54bb 1304 if (len == 0)
1da177e4
LT		 1305 return;
1306
ac719aba
BK		 1307 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1308 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1309
b0df54bb 1310 for (i = 0; i < len / 4; i += 4) {
1da177e4 1311 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1312 be32_to_cpu(data[i]),
1313 be32_to_cpu(data[i+1]),
1314 be32_to_cpu(data[i+2]),
1315 be32_to_cpu(data[i+3]));
1da177e4
LT		 1316 }
1317}
1318
ee0f05b8
BK		 1319/**
1320 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1321 * @ioa_cfg: ioa config struct
1322 * @hostrcb: hostrcb struct
1323 *
1324 * Return value:
1325 * none
1326 **/
1327static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1328 struct ipr_hostrcb *hostrcb)
1329{
1330 struct ipr_hostrcb_type_17_error *error;
1331
1332 error = &hostrcb->hcam.u.error.u.type_17_error;
1333 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1334 strstrip(error->failure_reason);
ee0f05b8 1335
8cf093e2
BK		 1336 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1337 be32_to_cpu(hostrcb->hcam.u.error.prc));
1338 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1339 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1340 be32_to_cpu(hostrcb->hcam.length) -
1341 (offsetof(struct ipr_hostrcb_error, u) +
1342 offsetof(struct ipr_hostrcb_type_17_error, data)));
1343}
1344
b0df54bb
BK		 1345/**
1346 * ipr_log_dual_ioa_error - Log a dual adapter error.
1347 * @ioa_cfg: ioa config struct
1348 * @hostrcb: hostrcb struct
1349 *
1350 * Return value:
1351 * none
1352 **/
1353static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1354 struct ipr_hostrcb *hostrcb)
1355{
1356 struct ipr_hostrcb_type_07_error *error;
1357
1358 error = &hostrcb->hcam.u.error.u.type_07_error;
1359 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1360 strstrip(error->failure_reason);
b0df54bb 1361
8cf093e2
BK		 1362 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1363 be32_to_cpu(hostrcb->hcam.u.error.prc));
1364 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1365 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1366 be32_to_cpu(hostrcb->hcam.length) -
1367 (offsetof(struct ipr_hostrcb_error, u) +
1368 offsetof(struct ipr_hostrcb_type_07_error, data)));
1369}
1370
49dc6a18
BK		 1371static const struct {
1372 u8 active;
1373 char *desc;
1374} path_active_desc[] = {
1375 { IPR_PATH_NO_INFO, "Path" },
1376 { IPR_PATH_ACTIVE, "Active path" },
1377 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1378};
1379
1380static const struct {
1381 u8 state;
1382 char *desc;
1383} path_state_desc[] = {
1384 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1385 { IPR_PATH_HEALTHY, "is healthy" },
1386 { IPR_PATH_DEGRADED, "is degraded" },
1387 { IPR_PATH_FAILED, "is failed" }
1388};
1389
1390/**
1391 * ipr_log_fabric_path - Log a fabric path error
1392 * @hostrcb: hostrcb struct
1393 * @fabric: fabric descriptor
1394 *
1395 * Return value:
1396 * none
1397 **/
1398static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1399 struct ipr_hostrcb_fabric_desc *fabric)
1400{
1401 int i, j;
1402 u8 path_state = fabric->path_state;
1403 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1404 u8 state = path_state & IPR_PATH_STATE_MASK;
1405
1406 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1407 if (path_active_desc[i].active != active)
1408 continue;
1409
1410 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1411 if (path_state_desc[j].state != state)
1412 continue;
1413
1414 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1415 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1416 path_active_desc[i].desc, path_state_desc[j].desc,
1417 fabric->ioa_port);
1418 } else if (fabric->cascaded_expander == 0xff) {
1419 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1420 path_active_desc[i].desc, path_state_desc[j].desc,
1421 fabric->ioa_port, fabric->phy);
1422 } else if (fabric->phy == 0xff) {
1423 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1424 path_active_desc[i].desc, path_state_desc[j].desc,
1425 fabric->ioa_port, fabric->cascaded_expander);
1426 } else {
1427 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1428 path_active_desc[i].desc, path_state_desc[j].desc,
1429 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1430 }
1431 return;
1432 }
1433 }
1434
1435 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1436 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1437}
1438
1439static const struct {
1440 u8 type;
1441 char *desc;
1442} path_type_desc[] = {
1443 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1444 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1445 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1446 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1447};
1448
1449static const struct {
1450 u8 status;
1451 char *desc;
1452} path_status_desc[] = {
1453 { IPR_PATH_CFG_NO_PROB, "Functional" },
1454 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1455 { IPR_PATH_CFG_FAILED, "Failed" },
1456 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1457 { IPR_PATH_NOT_DETECTED, "Missing" },
1458 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1459};
1460
1461static const char *link_rate[] = {
1462 "unknown",
1463 "disabled",
1464 "phy reset problem",
1465 "spinup hold",
1466 "port selector",
1467 "unknown",
1468 "unknown",
1469 "unknown",
1470 "1.5Gbps",
1471 "3.0Gbps",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown",
1477 "unknown"
1478};
1479
1480/**
1481 * ipr_log_path_elem - Log a fabric path element.
1482 * @hostrcb: hostrcb struct
1483 * @cfg: fabric path element struct
1484 *
1485 * Return value:
1486 * none
1487 **/
1488static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1489 struct ipr_hostrcb_config_element *cfg)
1490{
1491 int i, j;
1492 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1493 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1494
1495 if (type == IPR_PATH_CFG_NOT_EXIST)
1496 return;
1497
1498 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1499 if (path_type_desc[i].type != type)
1500 continue;
1501
1502 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1503 if (path_status_desc[j].status != status)
1504 continue;
1505
1506 if (type == IPR_PATH_CFG_IOA_PORT) {
1507 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1508 path_status_desc[j].desc, path_type_desc[i].desc,
1509 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1510 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1511 } else {
1512 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1513 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1514 path_status_desc[j].desc, path_type_desc[i].desc,
1515 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1516 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1517 } else if (cfg->cascaded_expander == 0xff) {
1518 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1519 "WWN=%08X%08X\n", path_status_desc[j].desc,
1520 path_type_desc[i].desc, cfg->phy,
1521 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1522 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1523 } else if (cfg->phy == 0xff) {
1524 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1525 "WWN=%08X%08X\n", path_status_desc[j].desc,
1526 path_type_desc[i].desc, cfg->cascaded_expander,
1527 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1528 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1529 } else {
1530 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1531 "WWN=%08X%08X\n", path_status_desc[j].desc,
1532 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1533 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1534 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1535 }
1536 }
1537 return;
1538 }
1539 }
1540
1541 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1542 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1543 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1544 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1545}
1546
1547/**
1548 * ipr_log_fabric_error - Log a fabric error.
1549 * @ioa_cfg: ioa config struct
1550 * @hostrcb: hostrcb struct
1551 *
1552 * Return value:
1553 * none
1554 **/
1555static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1556 struct ipr_hostrcb *hostrcb)
1557{
1558 struct ipr_hostrcb_type_20_error *error;
1559 struct ipr_hostrcb_fabric_desc *fabric;
1560 struct ipr_hostrcb_config_element *cfg;
1561 int i, add_len;
1562
1563 error = &hostrcb->hcam.u.error.u.type_20_error;
1564 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1565 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1566
1567 add_len = be32_to_cpu(hostrcb->hcam.length) -
1568 (offsetof(struct ipr_hostrcb_error, u) +
1569 offsetof(struct ipr_hostrcb_type_20_error, desc));
1570
1571 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1572 ipr_log_fabric_path(hostrcb, fabric);
1573 for_each_fabric_cfg(fabric, cfg)
1574 ipr_log_path_elem(hostrcb, cfg);
1575
1576 add_len -= be16_to_cpu(fabric->length);
1577 fabric = (struct ipr_hostrcb_fabric_desc *)
1578 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1579 }
1580
ac719aba 1581 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1582}
1583
b0df54bb
BK		 1584/**
1585 * ipr_log_generic_error - Log an adapter error.
1586 * @ioa_cfg: ioa config struct
1587 * @hostrcb: hostrcb struct
1588 *
1589 * Return value:
1590 * none
1591 **/
1592static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1593 struct ipr_hostrcb *hostrcb)
1594{
ac719aba 1595 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 1596 be32_to_cpu(hostrcb->hcam.length));
1597}
1598
1da177e4
LT		 1599/**
1600 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1601 * @ioasc: IOASC
1602 *
1603 * This function will return the index of into the ipr_error_table
1604 * for the specified IOASC. If the IOASC is not in the table,
1605 * 0 will be returned, which points to the entry used for unknown errors.
1606 *
1607 * Return value:
1608 * index into the ipr_error_table
1609 **/
1610static u32 ipr_get_error(u32 ioasc)
1611{
1612 int i;
1613
1614 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1615 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1616 return i;
1617
1618 return 0;
1619}
1620
1621/**
1622 * ipr_handle_log_data - Log an adapter error.
1623 * @ioa_cfg: ioa config struct
1624 * @hostrcb: hostrcb struct
1625 *
1626 * This function logs an adapter error to the system.
1627 *
1628 * Return value:
1629 * none
1630 **/
1631static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1632 struct ipr_hostrcb *hostrcb)
1633{
1634 u32 ioasc;
1635 int error_index;
1636
1637 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1638 return;
1639
1640 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1641 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1642
1643 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1644
1645 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1646 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1647 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1648 scsi_report_bus_reset(ioa_cfg->host,
1649 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1650 }
1651
1652 error_index = ipr_get_error(ioasc);
1653
1654 if (!ipr_error_table[error_index].log_hcam)
1655 return;
1656
49dc6a18 1657 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1658
1659 /* Set indication we have logged an error */
1660 ioa_cfg->errors_logged++;
1661
933916f3 1662 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1663 return;
cf852037
BK		 1664 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1665 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1666
1667 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1668 case IPR_HOST_RCB_OVERLAY_ID_2:
1669 ipr_log_cache_error(ioa_cfg, hostrcb);
1670 break;
1671 case IPR_HOST_RCB_OVERLAY_ID_3:
1672 ipr_log_config_error(ioa_cfg, hostrcb);
1673 break;
1674 case IPR_HOST_RCB_OVERLAY_ID_4:
1675 case IPR_HOST_RCB_OVERLAY_ID_6:
1676 ipr_log_array_error(ioa_cfg, hostrcb);
1677 break;
b0df54bb
BK		 1678 case IPR_HOST_RCB_OVERLAY_ID_7:
1679 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1680 break;
ee0f05b8
BK		 1681 case IPR_HOST_RCB_OVERLAY_ID_12:
1682 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1683 break;
1684 case IPR_HOST_RCB_OVERLAY_ID_13:
1685 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1686 break;
1687 case IPR_HOST_RCB_OVERLAY_ID_14:
1688 case IPR_HOST_RCB_OVERLAY_ID_16:
1689 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1690 break;
1691 case IPR_HOST_RCB_OVERLAY_ID_17:
1692 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1693 break;
49dc6a18
BK		 1694 case IPR_HOST_RCB_OVERLAY_ID_20:
1695 ipr_log_fabric_error(ioa_cfg, hostrcb);
1696 break;
cf852037 1697 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1698 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1699 default:
a9cfca96 1700 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1701 break;
1702 }
1703}
1704
1705/**
1706 * ipr_process_error - Op done function for an adapter error log.
1707 * @ipr_cmd: ipr command struct
1708 *
1709 * This function is the op done function for an error log host
1710 * controlled async from the adapter. It will log the error and
1711 * send the HCAM back to the adapter.
1712 *
1713 * Return value:
1714 * none
1715 **/
1716static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1717{
1718 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1719 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1720 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1721 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1722
1723 list_del(&hostrcb->queue);
1724 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1725
1726 if (!ioasc) {
1727 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1728 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1729 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1730 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1731 dev_err(&ioa_cfg->pdev->dev,
1732 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1733 }
1734
1735 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1736}
1737
1738/**
1739 * ipr_timeout - An internally generated op has timed out.
1740 * @ipr_cmd: ipr command struct
1741 *
1742 * This function blocks host requests and initiates an
1743 * adapter reset.
1744 *
1745 * Return value:
1746 * none
1747 **/
1748static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1749{
1750 unsigned long lock_flags = 0;
1751 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1752
1753 ENTER;
1754 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1755
1756 ioa_cfg->errors_logged++;
1757 dev_err(&ioa_cfg->pdev->dev,
1758 "Adapter being reset due to command timeout.\n");
1759
1760 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1761 ioa_cfg->sdt_state = GET_DUMP;
1762
1763 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1764 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1765
1766 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1767 LEAVE;
1768}
1769
1770/**
1771 * ipr_oper_timeout - Adapter timed out transitioning to operational
1772 * @ipr_cmd: ipr command struct
1773 *
1774 * This function blocks host requests and initiates an
1775 * adapter reset.
1776 *
1777 * Return value:
1778 * none
1779 **/
1780static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1781{
1782 unsigned long lock_flags = 0;
1783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1784
1785 ENTER;
1786 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1787
1788 ioa_cfg->errors_logged++;
1789 dev_err(&ioa_cfg->pdev->dev,
1790 "Adapter timed out transitioning to operational.\n");
1791
1792 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1793 ioa_cfg->sdt_state = GET_DUMP;
1794
1795 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1796 if (ipr_fastfail)
1797 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1798 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1799 }
1800
1801 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1802 LEAVE;
1803}
1804
1805/**
1806 * ipr_reset_reload - Reset/Reload the IOA
1807 * @ioa_cfg: ioa config struct
1808 * @shutdown_type: shutdown type
1809 *
1810 * This function resets the adapter and re-initializes it.
1811 * This function assumes that all new host commands have been stopped.
1812 * Return value:
1813 * SUCCESS / FAILED
1814 **/
1815static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1816 enum ipr_shutdown_type shutdown_type)
1817{
1818 if (!ioa_cfg->in_reset_reload)
1819 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1820
1821 spin_unlock_irq(ioa_cfg->host->host_lock);
1822 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1823 spin_lock_irq(ioa_cfg->host->host_lock);
1824
1825 /* If we got hit with a host reset while we were already resetting
1826 the adapter for some reason, and the reset failed. */
1827 if (ioa_cfg->ioa_is_dead) {
1828 ipr_trace;
1829 return FAILED;
1830 }
1831
1832 return SUCCESS;
1833}
1834
1835/**
1836 * ipr_find_ses_entry - Find matching SES in SES table
1837 * @res: resource entry struct of SES
1838 *
1839 * Return value:
1840 * pointer to SES table entry / NULL on failure
1841 **/
1842static const struct ipr_ses_table_entry *
1843ipr_find_ses_entry(struct ipr_resource_entry *res)
1844{
1845 int i, j, matches;
1846 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1847
1848 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1849 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1850 if (ste->compare_product_id_byte[j] == 'X') {
1851 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1852 matches++;
1853 else
1854 break;
1855 } else
1856 matches++;
1857 }
1858
1859 if (matches == IPR_PROD_ID_LEN)
1860 return ste;
1861 }
1862
1863 return NULL;
1864}
1865
1866/**
1867 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1868 * @ioa_cfg: ioa config struct
1869 * @bus: SCSI bus
1870 * @bus_width: bus width
1871 *
1872 * Return value:
1873 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1874 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1875 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1876 * max 160MHz = max 320MB/sec).
1877 **/
1878static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1879{
1880 struct ipr_resource_entry *res;
1881 const struct ipr_ses_table_entry *ste;
1882 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1883
1884 /* Loop through each config table entry in the config table buffer */
1885 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1886 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1887 continue;
1888
1889 if (bus != res->cfgte.res_addr.bus)
1890 continue;
1891
1892 if (!(ste = ipr_find_ses_entry(res)))
1893 continue;
1894
1895 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1896 }
1897
1898 return max_xfer_rate;
1899}
1900
1901/**
1902 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1903 * @ioa_cfg: ioa config struct
1904 * @max_delay: max delay in micro-seconds to wait
1905 *
1906 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1907 *
1908 * Return value:
1909 * 0 on success / other on failure
1910 **/
1911static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1912{
1913 volatile u32 pcii_reg;
1914 int delay = 1;
1915
1916 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1917 while (delay < max_delay) {
1918 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1919
1920 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1921 return 0;
1922
1923 /* udelay cannot be used if delay is more than a few milliseconds */
1924 if ((delay / 1000) > MAX_UDELAY_MS)
1925 mdelay(delay / 1000);
1926 else
1927 udelay(delay);
1928
1929 delay += delay;
1930 }
1931 return -EIO;
1932}
1933
1934/**
1935 * ipr_get_ldump_data_section - Dump IOA memory
1936 * @ioa_cfg: ioa config struct
1937 * @start_addr: adapter address to dump
1938 * @dest: destination kernel buffer
1939 * @length_in_words: length to dump in 4 byte words
1940 *
1941 * Return value:
1942 * 0 on success / -EIO on failure
1943 **/
1944static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1945 u32 start_addr,
1946 __be32 *dest, u32 length_in_words)
1947{
1948 volatile u32 temp_pcii_reg;
1949 int i, delay = 0;
1950
1951 /* Write IOA interrupt reg starting LDUMP state */
1952 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1953 ioa_cfg->regs.set_uproc_interrupt_reg);
1954
1955 /* Wait for IO debug acknowledge */
1956 if (ipr_wait_iodbg_ack(ioa_cfg,
1957 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1958 dev_err(&ioa_cfg->pdev->dev,
1959 "IOA dump long data transfer timeout\n");
1960 return -EIO;
1961 }
1962
1963 /* Signal LDUMP interlocked - clear IO debug ack */
1964 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1965 ioa_cfg->regs.clr_interrupt_reg);
1966
1967 /* Write Mailbox with starting address */
1968 writel(start_addr, ioa_cfg->ioa_mailbox);
1969
1970 /* Signal address valid - clear IOA Reset alert */
1971 writel(IPR_UPROCI_RESET_ALERT,
1972 ioa_cfg->regs.clr_uproc_interrupt_reg);
1973
1974 for (i = 0; i < length_in_words; i++) {
1975 /* Wait for IO debug acknowledge */
1976 if (ipr_wait_iodbg_ack(ioa_cfg,
1977 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1978 dev_err(&ioa_cfg->pdev->dev,
1979 "IOA dump short data transfer timeout\n");
1980 return -EIO;
1981 }
1982
1983 /* Read data from mailbox and increment destination pointer */
1984 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1985 dest++;
1986
1987 /* For all but the last word of data, signal data received */
1988 if (i < (length_in_words - 1)) {
1989 /* Signal dump data received - Clear IO debug Ack */
1990 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1991 ioa_cfg->regs.clr_interrupt_reg);
1992 }
1993 }
1994
1995 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1996 writel(IPR_UPROCI_RESET_ALERT,
1997 ioa_cfg->regs.set_uproc_interrupt_reg);
1998
1999 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2000 ioa_cfg->regs.clr_uproc_interrupt_reg);
2001
2002 /* Signal dump data received - Clear IO debug Ack */
2003 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2004 ioa_cfg->regs.clr_interrupt_reg);
2005
2006 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2007 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2008 temp_pcii_reg =
2009 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2010
2011 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2012 return 0;
2013
2014 udelay(10);
2015 delay += 10;
2016 }
2017
2018 return 0;
2019}
2020
2021#ifdef CONFIG_SCSI_IPR_DUMP
2022/**
2023 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2024 * @ioa_cfg: ioa config struct
2025 * @pci_address: adapter address
2026 * @length: length of data to copy
2027 *
2028 * Copy data from PCI adapter to kernel buffer.
2029 * Note: length MUST be a 4 byte multiple
2030 * Return value:
2031 * 0 on success / other on failure
2032 **/
2033static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2034 unsigned long pci_address, u32 length)
2035{
2036 int bytes_copied = 0;
2037 int cur_len, rc, rem_len, rem_page_len;
2038 __be32 *page;
2039 unsigned long lock_flags = 0;
2040 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2041
2042 while (bytes_copied < length &&
2043 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2044 if (ioa_dump->page_offset >= PAGE_SIZE ||
2045 ioa_dump->page_offset == 0) {
2046 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2047
2048 if (!page) {
2049 ipr_trace;
2050 return bytes_copied;
2051 }
2052
2053 ioa_dump->page_offset = 0;
2054 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2055 ioa_dump->next_page_index++;
2056 } else
2057 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2058
2059 rem_len = length - bytes_copied;
2060 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2061 cur_len = min(rem_len, rem_page_len);
2062
2063 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2064 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2065 rc = -EIO;
2066 } else {
2067 rc = ipr_get_ldump_data_section(ioa_cfg,
2068 pci_address + bytes_copied,
2069 &page[ioa_dump->page_offset / 4],
2070 (cur_len / sizeof(u32)));
2071 }
2072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2073
2074 if (!rc) {
2075 ioa_dump->page_offset += cur_len;
2076 bytes_copied += cur_len;
2077 } else {
2078 ipr_trace;
2079 break;
2080 }
2081 schedule();
2082 }
2083
2084 return bytes_copied;
2085}
2086
2087/**
2088 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2089 * @hdr: dump entry header struct
2090 *
2091 * Return value:
2092 * nothing
2093 **/
2094static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2095{
2096 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2097 hdr->num_elems = 1;
2098 hdr->offset = sizeof(*hdr);
2099 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2100}
2101
2102/**
2103 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2104 * @ioa_cfg: ioa config struct
2105 * @driver_dump: driver dump struct
2106 *
2107 * Return value:
2108 * nothing
2109 **/
2110static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2111 struct ipr_driver_dump *driver_dump)
2112{
2113 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2114
2115 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2116 driver_dump->ioa_type_entry.hdr.len =
2117 sizeof(struct ipr_dump_ioa_type_entry) -
2118 sizeof(struct ipr_dump_entry_header);
2119 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2120 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2121 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2122 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2123 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2124 ucode_vpd->minor_release[1];
2125 driver_dump->hdr.num_entries++;
2126}
2127
2128/**
2129 * ipr_dump_version_data - Fill in the driver version in the dump.
2130 * @ioa_cfg: ioa config struct
2131 * @driver_dump: driver dump struct
2132 *
2133 * Return value:
2134 * nothing
2135 **/
2136static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2137 struct ipr_driver_dump *driver_dump)
2138{
2139 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2140 driver_dump->version_entry.hdr.len =
2141 sizeof(struct ipr_dump_version_entry) -
2142 sizeof(struct ipr_dump_entry_header);
2143 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2144 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2145 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2146 driver_dump->hdr.num_entries++;
2147}
2148
2149/**
2150 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2151 * @ioa_cfg: ioa config struct
2152 * @driver_dump: driver dump struct
2153 *
2154 * Return value:
2155 * nothing
2156 **/
2157static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2158 struct ipr_driver_dump *driver_dump)
2159{
2160 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2161 driver_dump->trace_entry.hdr.len =
2162 sizeof(struct ipr_dump_trace_entry) -
2163 sizeof(struct ipr_dump_entry_header);
2164 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2165 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2166 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2167 driver_dump->hdr.num_entries++;
2168}
2169
2170/**
2171 * ipr_dump_location_data - Fill in the IOA location in the dump.
2172 * @ioa_cfg: ioa config struct
2173 * @driver_dump: driver dump struct
2174 *
2175 * Return value:
2176 * nothing
2177 **/
2178static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2179 struct ipr_driver_dump *driver_dump)
2180{
2181 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2182 driver_dump->location_entry.hdr.len =
2183 sizeof(struct ipr_dump_location_entry) -
2184 sizeof(struct ipr_dump_entry_header);
2185 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2186 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2187 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2188 driver_dump->hdr.num_entries++;
2189}
2190
2191/**
2192 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2193 * @ioa_cfg: ioa config struct
2194 * @dump: dump struct
2195 *
2196 * Return value:
2197 * nothing
2198 **/
2199static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2200{
2201 unsigned long start_addr, sdt_word;
2202 unsigned long lock_flags = 0;
2203 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2204 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2205 u32 num_entries, start_off, end_off;
2206 u32 bytes_to_copy, bytes_copied, rc;
2207 struct ipr_sdt *sdt;
2208 int i;
2209
2210 ENTER;
2211
2212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2213
2214 if (ioa_cfg->sdt_state != GET_DUMP) {
2215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2216 return;
2217 }
2218
2219 start_addr = readl(ioa_cfg->ioa_mailbox);
2220
2221 if (!ipr_sdt_is_fmt2(start_addr)) {
2222 dev_err(&ioa_cfg->pdev->dev,
2223 "Invalid dump table format: %lx\n", start_addr);
2224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2225 return;
2226 }
2227
2228 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2229
2230 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2231
2232 /* Initialize the overall dump header */
2233 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2234 driver_dump->hdr.num_entries = 1;
2235 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2236 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2237 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2238 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2239
2240 ipr_dump_version_data(ioa_cfg, driver_dump);
2241 ipr_dump_location_data(ioa_cfg, driver_dump);
2242 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2243 ipr_dump_trace_data(ioa_cfg, driver_dump);
2244
2245 /* Update dump_header */
2246 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2247
2248 /* IOA Dump entry */
2249 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2250 ioa_dump->format = IPR_SDT_FMT2;
2251 ioa_dump->hdr.len = 0;
2252 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2253 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2254
2255 /* First entries in sdt are actually a list of dump addresses and
2256 lengths to gather the real dump data. sdt represents the pointer
2257 to the ioa generated dump table. Dump data will be extracted based
2258 on entries in this table */
2259 sdt = &ioa_dump->sdt;
2260
2261 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2262 sizeof(struct ipr_sdt) / sizeof(__be32));
2263
2264 /* Smart Dump table is ready to use and the first entry is valid */
2265 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2266 dev_err(&ioa_cfg->pdev->dev,
2267 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2268 rc, be32_to_cpu(sdt->hdr.state));
2269 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2270 ioa_cfg->sdt_state = DUMP_OBTAINED;
2271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2272 return;
2273 }
2274
2275 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2276
2277 if (num_entries > IPR_NUM_SDT_ENTRIES)
2278 num_entries = IPR_NUM_SDT_ENTRIES;
2279
2280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2281
2282 for (i = 0; i < num_entries; i++) {
2283 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2284 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2285 break;
2286 }
2287
2288 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2289 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2290 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2291 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2292
2293 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2294 bytes_to_copy = end_off - start_off;
2295 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2296 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2297 continue;
2298 }
2299
2300 /* Copy data from adapter to driver buffers */
2301 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2302 bytes_to_copy);
2303
2304 ioa_dump->hdr.len += bytes_copied;
2305
2306 if (bytes_copied != bytes_to_copy) {
2307 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2308 break;
2309 }
2310 }
2311 }
2312 }
2313
2314 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2315
2316 /* Update dump_header */
2317 driver_dump->hdr.len += ioa_dump->hdr.len;
2318 wmb();
2319 ioa_cfg->sdt_state = DUMP_OBTAINED;
2320 LEAVE;
2321}
2322
2323#else
2324#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2325#endif
2326
2327/**
2328 * ipr_release_dump - Free adapter dump memory
2329 * @kref: kref struct
2330 *
2331 * Return value:
2332 * nothing
2333 **/
2334static void ipr_release_dump(struct kref *kref)
2335{
2336 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2337 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2338 unsigned long lock_flags = 0;
2339 int i;
2340
2341 ENTER;
2342 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2343 ioa_cfg->dump = NULL;
2344 ioa_cfg->sdt_state = INACTIVE;
2345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2346
2347 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2348 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2349
2350 kfree(dump);
2351 LEAVE;
2352}
2353
2354/**
2355 * ipr_worker_thread - Worker thread
c4028958 2356 * @work: ioa config struct
1da177e4
LT		 2357 *
2358 * Called at task level from a work thread. This function takes care
2359 * of adding and removing device from the mid-layer as configuration
2360 * changes are detected by the adapter.
2361 *
2362 * Return value:
2363 * nothing
2364 **/
c4028958 2365static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2366{
2367 unsigned long lock_flags;
2368 struct ipr_resource_entry *res;
2369 struct scsi_device *sdev;
2370 struct ipr_dump *dump;
c4028958
DH		 2371 struct ipr_ioa_cfg *ioa_cfg =
2372 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2373 u8 bus, target, lun;
2374 int did_work;
2375
2376 ENTER;
2377 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2378
2379 if (ioa_cfg->sdt_state == GET_DUMP) {
2380 dump = ioa_cfg->dump;
2381 if (!dump) {
2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2383 return;
2384 }
2385 kref_get(&dump->kref);
2386 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2387 ipr_get_ioa_dump(ioa_cfg, dump);
2388 kref_put(&dump->kref, ipr_release_dump);
2389
2390 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2391 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2392 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2393 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2394 return;
2395 }
2396
2397restart:
2398 do {
2399 did_work = 0;
2400 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2401 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2402 return;
2403 }
2404
2405 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2406 if (res->del_from_ml && res->sdev) {
2407 did_work = 1;
2408 sdev = res->sdev;
2409 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2410 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2412 scsi_remove_device(sdev);
2413 scsi_device_put(sdev);
2414 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2415 }
2416 break;
2417 }
2418 }
2419 } while(did_work);
2420
2421 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2422 if (res->add_to_ml) {
2423 bus = res->cfgte.res_addr.bus;
2424 target = res->cfgte.res_addr.target;
2425 lun = res->cfgte.res_addr.lun;
1121b794 2426 res->add_to_ml = 0;
1da177e4
LT		 2427 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2428 scsi_add_device(ioa_cfg->host, bus, target, lun);
2429 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2430 goto restart;
2431 }
2432 }
2433
2434 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
ee959b00 2435 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2436 LEAVE;
2437}
2438
2439#ifdef CONFIG_SCSI_IPR_TRACE
2440/**
2441 * ipr_read_trace - Dump the adapter trace
2442 * @kobj: kobject struct
91a69029 2443 * @bin_attr: bin_attribute struct
1da177e4
LT		 2444 * @buf: buffer
2445 * @off: offset
2446 * @count: buffer size
2447 *
2448 * Return value:
2449 * number of bytes printed to buffer
2450 **/
91a69029
ZR		 2451static ssize_t ipr_read_trace(struct kobject *kobj,
2452 struct bin_attribute *bin_attr,
2453 char *buf, loff_t off, size_t count)
1da177e4 2454{
ee959b00
TJ		 2455 struct device *dev = container_of(kobj, struct device, kobj);
2456 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2457 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2458 unsigned long lock_flags = 0;
d777aaf3 2459 ssize_t ret;
1da177e4
LT		 2460
2461 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 2462 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
2463 IPR_TRACE_SIZE);
1da177e4 2464 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
d777aaf3
AM		 2465
2466 return ret;
1da177e4
LT		 2467}
2468
2469static struct bin_attribute ipr_trace_attr = {
2470 .attr = {
2471 .name = "trace",
2472 .mode = S_IRUGO,
2473 },
2474 .size = 0,
2475 .read = ipr_read_trace,
2476};
2477#endif
2478
62275040
BK		 2479static const struct {
2480 enum ipr_cache_state state;
2481 char *name;
2482} cache_state [] = {
2483 { CACHE_NONE, "none" },
2484 { CACHE_DISABLED, "disabled" },
2485 { CACHE_ENABLED, "enabled" }
2486};
2487
2488/**
2489 * ipr_show_write_caching - Show the write caching attribute
ee959b00
TJ		 2490 * @dev: device struct
2491 * @buf: buffer
62275040
BK		 2492 *
2493 * Return value:
2494 * number of bytes printed to buffer
2495 **/
ee959b00
TJ		 2496static ssize_t ipr_show_write_caching(struct device *dev,
2497 struct device_attribute *attr, char *buf)
62275040 2498{
ee959b00 2499 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2500 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2501 unsigned long lock_flags = 0;
2502 int i, len = 0;
2503
2504 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2505 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2506 if (cache_state[i].state == ioa_cfg->cache_state) {
2507 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2508 break;
2509 }
2510 }
2511 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2512 return len;
2513}
2514
2515
2516/**
2517 * ipr_store_write_caching - Enable/disable adapter write cache
ee959b00
TJ		 2518 * @dev: device struct
2519 * @buf: buffer
2520 * @count: buffer size
62275040
BK		 2521 *
2522 * This function will enable/disable adapter write cache.
2523 *
2524 * Return value:
2525 * count on success / other on failure
2526 **/
ee959b00
TJ		 2527static ssize_t ipr_store_write_caching(struct device *dev,
2528 struct device_attribute *attr,
2529 const char *buf, size_t count)
62275040 2530{
ee959b00 2531 struct Scsi_Host *shost = class_to_shost(dev);
62275040
BK		 2532 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2533 unsigned long lock_flags = 0;
2534 enum ipr_cache_state new_state = CACHE_INVALID;
2535 int i;
2536
2537 if (!capable(CAP_SYS_ADMIN))
2538 return -EACCES;
2539 if (ioa_cfg->cache_state == CACHE_NONE)
2540 return -EINVAL;
2541
2542 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2543 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2544 new_state = cache_state[i].state;
2545 break;
2546 }
2547 }
2548
2549 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2550 return -EINVAL;
2551
2552 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2553 if (ioa_cfg->cache_state == new_state) {
2554 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2555 return count;
2556 }
2557
2558 ioa_cfg->cache_state = new_state;
2559 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2560 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2561 if (!ioa_cfg->in_reset_reload)
2562 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2563 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2564 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2565
2566 return count;
2567}
2568
ee959b00 2569static struct device_attribute ipr_ioa_cache_attr = {
62275040
BK		 2570 .attr = {
2571 .name = "write_cache",
2572 .mode = S_IRUGO | S_IWUSR,
2573 },
2574 .show = ipr_show_write_caching,
2575 .store = ipr_store_write_caching
2576};
2577
1da177e4
LT		 2578/**
2579 * ipr_show_fw_version - Show the firmware version
ee959b00
TJ		 2580 * @dev: class device struct
2581 * @buf: buffer
1da177e4
LT		 2582 *
2583 * Return value:
2584 * number of bytes printed to buffer
2585 **/
ee959b00
TJ		 2586static ssize_t ipr_show_fw_version(struct device *dev,
2587 struct device_attribute *attr, char *buf)
1da177e4 2588{
ee959b00 2589 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2590 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2591 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2592 unsigned long lock_flags = 0;
2593 int len;
2594
2595 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2596 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2597 ucode_vpd->major_release, ucode_vpd->card_type,
2598 ucode_vpd->minor_release[0],
2599 ucode_vpd->minor_release[1]);
2600 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2601 return len;
2602}
2603
ee959b00 2604static struct device_attribute ipr_fw_version_attr = {
1da177e4
LT		 2605 .attr = {
2606 .name = "fw_version",
2607 .mode = S_IRUGO,
2608 },
2609 .show = ipr_show_fw_version,
2610};
2611
2612/**
2613 * ipr_show_log_level - Show the adapter's error logging level
ee959b00
TJ		 2614 * @dev: class device struct
2615 * @buf: buffer
1da177e4
LT		 2616 *
2617 * Return value:
2618 * number of bytes printed to buffer
2619 **/
ee959b00
TJ		 2620static ssize_t ipr_show_log_level(struct device *dev,
2621 struct device_attribute *attr, char *buf)
1da177e4 2622{
ee959b00 2623 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2624 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2625 unsigned long lock_flags = 0;
2626 int len;
2627
2628 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2629 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2630 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2631 return len;
2632}
2633
2634/**
2635 * ipr_store_log_level - Change the adapter's error logging level
ee959b00
TJ		 2636 * @dev: class device struct
2637 * @buf: buffer
1da177e4
LT		 2638 *
2639 * Return value:
2640 * number of bytes printed to buffer
2641 **/
ee959b00
TJ		 2642static ssize_t ipr_store_log_level(struct device *dev,
2643 struct device_attribute *attr,
1da177e4
LT		 2644 const char *buf, size_t count)
2645{
ee959b00 2646 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2648 unsigned long lock_flags = 0;
2649
2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2651 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2653 return strlen(buf);
2654}
2655
ee959b00 2656static struct device_attribute ipr_log_level_attr = {
1da177e4
LT		 2657 .attr = {
2658 .name = "log_level",
2659 .mode = S_IRUGO | S_IWUSR,
2660 },
2661 .show = ipr_show_log_level,
2662 .store = ipr_store_log_level
2663};
2664
2665/**
2666 * ipr_store_diagnostics - IOA Diagnostics interface
ee959b00
TJ		 2667 * @dev: device struct
2668 * @buf: buffer
2669 * @count: buffer size
1da177e4
LT		 2670 *
2671 * This function will reset the adapter and wait a reasonable
2672 * amount of time for any errors that the adapter might log.
2673 *
2674 * Return value:
2675 * count on success / other on failure
2676 **/
ee959b00
TJ		 2677static ssize_t ipr_store_diagnostics(struct device *dev,
2678 struct device_attribute *attr,
1da177e4
LT		 2679 const char *buf, size_t count)
2680{
ee959b00 2681 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2682 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2683 unsigned long lock_flags = 0;
2684 int rc = count;
2685
2686 if (!capable(CAP_SYS_ADMIN))
2687 return -EACCES;
2688
1da177e4 2689 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2690 while(ioa_cfg->in_reset_reload) {
2691 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2692 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2693 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2694 }
2695
1da177e4
LT		 2696 ioa_cfg->errors_logged = 0;
2697 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2698
2699 if (ioa_cfg->in_reset_reload) {
2700 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2701 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2702
2703 /* Wait for a second for any errors to be logged */
2704 msleep(1000);
2705 } else {
2706 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2707 return -EIO;
2708 }
2709
2710 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2711 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2712 rc = -EIO;
2713 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2714
2715 return rc;
2716}
2717
ee959b00 2718static struct device_attribute ipr_diagnostics_attr = {
1da177e4
LT		 2719 .attr = {
2720 .name = "run_diagnostics",
2721 .mode = S_IWUSR,
2722 },
2723 .store = ipr_store_diagnostics
2724};
2725
f37eb54b
BK		 2726/**
2727 * ipr_show_adapter_state - Show the adapter's state
ee959b00
TJ		 2728 * @class_dev: device struct
2729 * @buf: buffer
f37eb54b
BK		 2730 *
2731 * Return value:
2732 * number of bytes printed to buffer
2733 **/
ee959b00
TJ		 2734static ssize_t ipr_show_adapter_state(struct device *dev,
2735 struct device_attribute *attr, char *buf)
f37eb54b 2736{
ee959b00 2737 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2738 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2739 unsigned long lock_flags = 0;
2740 int len;
2741
2742 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2743 if (ioa_cfg->ioa_is_dead)
2744 len = snprintf(buf, PAGE_SIZE, "offline\n");
2745 else
2746 len = snprintf(buf, PAGE_SIZE, "online\n");
2747 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2748 return len;
2749}
2750
2751/**
2752 * ipr_store_adapter_state - Change adapter state
ee959b00
TJ		 2753 * @dev: device struct
2754 * @buf: buffer
2755 * @count: buffer size
f37eb54b
BK		 2756 *
2757 * This function will change the adapter's state.
2758 *
2759 * Return value:
2760 * count on success / other on failure
2761 **/
ee959b00
TJ		 2762static ssize_t ipr_store_adapter_state(struct device *dev,
2763 struct device_attribute *attr,
f37eb54b
BK		 2764 const char *buf, size_t count)
2765{
ee959b00 2766 struct Scsi_Host *shost = class_to_shost(dev);
f37eb54b
BK		 2767 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2768 unsigned long lock_flags;
2769 int result = count;
2770
2771 if (!capable(CAP_SYS_ADMIN))
2772 return -EACCES;
2773
2774 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2775 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2776 ioa_cfg->ioa_is_dead = 0;
2777 ioa_cfg->reset_retries = 0;
2778 ioa_cfg->in_ioa_bringdown = 0;
2779 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2780 }
2781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2782 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2783
2784 return result;
2785}
2786
ee959b00 2787static struct device_attribute ipr_ioa_state_attr = {
f37eb54b 2788 .attr = {
49dd0961 2789 .name = "online_state",
f37eb54b
BK		 2790 .mode = S_IRUGO | S_IWUSR,
2791 },
2792 .show = ipr_show_adapter_state,
2793 .store = ipr_store_adapter_state
2794};
2795
1da177e4
LT		 2796/**
2797 * ipr_store_reset_adapter - Reset the adapter
ee959b00
TJ		 2798 * @dev: device struct
2799 * @buf: buffer
2800 * @count: buffer size
1da177e4
LT		 2801 *
2802 * This function will reset the adapter.
2803 *
2804 * Return value:
2805 * count on success / other on failure
2806 **/
ee959b00
TJ		 2807static ssize_t ipr_store_reset_adapter(struct device *dev,
2808 struct device_attribute *attr,
1da177e4
LT		 2809 const char *buf, size_t count)
2810{
ee959b00 2811 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 2812 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2813 unsigned long lock_flags;
2814 int result = count;
2815
2816 if (!capable(CAP_SYS_ADMIN))
2817 return -EACCES;
2818
2819 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2820 if (!ioa_cfg->in_reset_reload)
2821 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2822 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2823 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2824
2825 return result;
2826}
2827
ee959b00 2828static struct device_attribute ipr_ioa_reset_attr = {
1da177e4
LT		 2829 .attr = {
2830 .name = "reset_host",
2831 .mode = S_IWUSR,
2832 },
2833 .store = ipr_store_reset_adapter
2834};
2835
2836/**
2837 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2838 * @buf_len: buffer length
2839 *
2840 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2841 * list to use for microcode download
2842 *
2843 * Return value:
2844 * pointer to sglist / NULL on failure
2845 **/
2846static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2847{
2848 int sg_size, order, bsize_elem, num_elem, i, j;
2849 struct ipr_sglist *sglist;
2850 struct scatterlist *scatterlist;
2851 struct page *page;
2852
2853 /* Get the minimum size per scatter/gather element */
2854 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2855
2856 /* Get the actual size per element */
2857 order = get_order(sg_size);
2858
2859 /* Determine the actual number of bytes per element */
2860 bsize_elem = PAGE_SIZE * (1 << order);
2861
2862 /* Determine the actual number of sg entries needed */
2863 if (buf_len % bsize_elem)
2864 num_elem = (buf_len / bsize_elem) + 1;
2865 else
2866 num_elem = buf_len / bsize_elem;
2867
2868 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2869 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2870 (sizeof(struct scatterlist) * (num_elem - 1)),
2871 GFP_KERNEL);
2872
2873 if (sglist == NULL) {
2874 ipr_trace;
2875 return NULL;
2876 }
2877
1da177e4 2878 scatterlist = sglist->scatterlist;
45711f1a 2879 sg_init_table(scatterlist, num_elem);
1da177e4
LT		 2880
2881 sglist->order = order;
2882 sglist->num_sg = num_elem;
2883
2884 /* Allocate a bunch of sg elements */
2885 for (i = 0; i < num_elem; i++) {
2886 page = alloc_pages(GFP_KERNEL, order);
2887 if (!page) {
2888 ipr_trace;
2889
2890 /* Free up what we already allocated */
2891 for (j = i - 1; j >= 0; j--)
45711f1a 2892 __free_pages(sg_page(&scatterlist[j]), order);
1da177e4
LT		 2893 kfree(sglist);
2894 return NULL;
2895 }
2896
642f1490 2897 sg_set_page(&scatterlist[i], page, 0, 0);
1da177e4
LT		 2898 }
2899
2900 return sglist;
2901}
2902
2903/**
2904 * ipr_free_ucode_buffer - Frees a microcode download buffer
2905 * @p_dnld: scatter/gather list pointer
2906 *
2907 * Free a DMA'able ucode download buffer previously allocated with
2908 * ipr_alloc_ucode_buffer
2909 *
2910 * Return value:
2911 * nothing
2912 **/
2913static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2914{
2915 int i;
2916
2917 for (i = 0; i < sglist->num_sg; i++)
45711f1a 2918 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
1da177e4
LT		 2919
2920 kfree(sglist);
2921}
2922
2923/**
2924 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2925 * @sglist: scatter/gather list pointer
2926 * @buffer: buffer pointer
2927 * @len: buffer length
2928 *
2929 * Copy a microcode image from a user buffer into a buffer allocated by
2930 * ipr_alloc_ucode_buffer
2931 *
2932 * Return value:
2933 * 0 on success / other on failure
2934 **/
2935static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2936 u8 *buffer, u32 len)
2937{
2938 int bsize_elem, i, result = 0;
2939 struct scatterlist *scatterlist;
2940 void *kaddr;
2941
2942 /* Determine the actual number of bytes per element */
2943 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2944
2945 scatterlist = sglist->scatterlist;
2946
2947 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
45711f1a
JA		 2948 struct page *page = sg_page(&scatterlist[i]);
2949
2950 kaddr = kmap(page);
1da177e4 2951 memcpy(kaddr, buffer, bsize_elem);
45711f1a 2952 kunmap(page);
1da177e4
LT		 2953
2954 scatterlist[i].length = bsize_elem;
2955
2956 if (result != 0) {
2957 ipr_trace;
2958 return result;
2959 }
2960 }
2961
2962 if (len % bsize_elem) {
45711f1a
JA		 2963 struct page *page = sg_page(&scatterlist[i]);
2964
2965 kaddr = kmap(page);
1da177e4 2966 memcpy(kaddr, buffer, len % bsize_elem);
45711f1a 2967 kunmap(page);
1da177e4
LT		 2968
2969 scatterlist[i].length = len % bsize_elem;
2970 }
2971
2972 sglist->buffer_len = len;
2973 return result;
2974}
2975
2976/**
12baa420 2977 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2978 * @ipr_cmd: ipr command struct
2979 * @sglist: scatter/gather list
1da177e4 2980 *
12baa420 2981 * Builds a microcode download IOA data list (IOADL).
1da177e4 2982 *
1da177e4 2983 **/
12baa420
BK		 2984static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2985 struct ipr_sglist *sglist)
1da177e4 2986{
1da177e4
LT		 2987 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2988 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2989 struct scatterlist *scatterlist = sglist->scatterlist;
2990 int i;
2991
12baa420 2992 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2993 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2994 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2995 ioarcb->write_ioadl_len =
2996 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2997
2998 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2999 ioadl[i].flags_and_data_len =
3000 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3001 ioadl[i].address =
3002 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3003 }
3004
12baa420
BK		 3005 ioadl[i-1].flags_and_data_len |=
3006 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3007}
3008
3009/**
3010 * ipr_update_ioa_ucode - Update IOA's microcode
3011 * @ioa_cfg: ioa config struct
3012 * @sglist: scatter/gather list
3013 *
3014 * Initiate an adapter reset to update the IOA's microcode
3015 *
3016 * Return value:
3017 * 0 on success / -EIO on failure
3018 **/
3019static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3020 struct ipr_sglist *sglist)
3021{
3022 unsigned long lock_flags;
3023
3024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3025 while(ioa_cfg->in_reset_reload) {
3026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3027 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3028 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3029 }
12baa420
BK		 3030
3031 if (ioa_cfg->ucode_sglist) {
3032 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3033 dev_err(&ioa_cfg->pdev->dev,
3034 "Microcode download already in progress\n");
3035 return -EIO;
1da177e4 3036 }
12baa420
BK		 3037
3038 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3039 sglist->num_sg, DMA_TO_DEVICE);
3040
3041 if (!sglist->num_dma_sg) {
3042 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3043 dev_err(&ioa_cfg->pdev->dev,
3044 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3045 return -EIO;
3046 }
3047
12baa420
BK		 3048 ioa_cfg->ucode_sglist = sglist;
3049 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3051 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3052
3053 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3054 ioa_cfg->ucode_sglist = NULL;
3055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3056 return 0;
3057}
3058
3059/**
3060 * ipr_store_update_fw - Update the firmware on the adapter
ee959b00
TJ		 3061 * @class_dev: device struct
3062 * @buf: buffer
3063 * @count: buffer size
1da177e4
LT		 3064 *
3065 * This function will update the firmware on the adapter.
3066 *
3067 * Return value:
3068 * count on success / other on failure
3069 **/
ee959b00
TJ		 3070static ssize_t ipr_store_update_fw(struct device *dev,
3071 struct device_attribute *attr,
3072 const char *buf, size_t count)
1da177e4 3073{
ee959b00 3074 struct Scsi_Host *shost = class_to_shost(dev);
1da177e4
LT		 3075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3076 struct ipr_ucode_image_header *image_hdr;
3077 const struct firmware *fw_entry;
3078 struct ipr_sglist *sglist;
1da177e4
LT		 3079 char fname[100];
3080 char *src;
3081 int len, result, dnld_size;
3082
3083 if (!capable(CAP_SYS_ADMIN))
3084 return -EACCES;
3085
3086 len = snprintf(fname, 99, "%s", buf);
3087 fname[len-1] = '\0';
3088
3089 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3090 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3091 return -EIO;
3092 }
3093
3094 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3095
3096 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3097 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3098 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3099 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3100 release_firmware(fw_entry);
3101 return -EINVAL;
3102 }
3103
3104 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3105 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3106 sglist = ipr_alloc_ucode_buffer(dnld_size);
3107
3108 if (!sglist) {
3109 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3110 release_firmware(fw_entry);
3111 return -ENOMEM;
3112 }
3113
3114 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3115
3116 if (result) {
3117 dev_err(&ioa_cfg->pdev->dev,
3118 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3119 goto out;
1da177e4
LT		 3120 }
3121
12baa420 3122 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3123
12baa420
BK		 3124 if (!result)
3125 result = count;
3126out:
1da177e4
LT		 3127 ipr_free_ucode_buffer(sglist);
3128 release_firmware(fw_entry);
12baa420 3129 return result;
1da177e4
LT		 3130}
3131
ee959b00 3132static struct device_attribute ipr_update_fw_attr = {
1da177e4
LT		 3133 .attr = {
3134 .name = "update_fw",
3135 .mode = S_IWUSR,
3136 },
3137 .store = ipr_store_update_fw
3138};
3139
ee959b00 3140static struct device_attribute *ipr_ioa_attrs[] = {
1da177e4
LT		 3141 &ipr_fw_version_attr,
3142 &ipr_log_level_attr,
3143 &ipr_diagnostics_attr,
f37eb54b 3144 &ipr_ioa_state_attr,
1da177e4
LT		 3145 &ipr_ioa_reset_attr,
3146 &ipr_update_fw_attr,
62275040 3147 &ipr_ioa_cache_attr,
1da177e4
LT		 3148 NULL,
3149};
3150
3151#ifdef CONFIG_SCSI_IPR_DUMP
3152/**
3153 * ipr_read_dump - Dump the adapter
3154 * @kobj: kobject struct
91a69029 3155 * @bin_attr: bin_attribute struct
1da177e4
LT		 3156 * @buf: buffer
3157 * @off: offset
3158 * @count: buffer size
3159 *
3160 * Return value:
3161 * number of bytes printed to buffer
3162 **/
91a69029
ZR		 3163static ssize_t ipr_read_dump(struct kobject *kobj,
3164 struct bin_attribute *bin_attr,
3165 char *buf, loff_t off, size_t count)
1da177e4 3166{
ee959b00 3167 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3168 struct Scsi_Host *shost = class_to_shost(cdev);
3169 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3170 struct ipr_dump *dump;
3171 unsigned long lock_flags = 0;
3172 char *src;
3173 int len;
3174 size_t rc = count;
3175
3176 if (!capable(CAP_SYS_ADMIN))
3177 return -EACCES;
3178
3179 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3180 dump = ioa_cfg->dump;
3181
3182 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3184 return 0;
3185 }
3186 kref_get(&dump->kref);
3187 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3188
3189 if (off > dump->driver_dump.hdr.len) {
3190 kref_put(&dump->kref, ipr_release_dump);
3191 return 0;
3192 }
3193
3194 if (off + count > dump->driver_dump.hdr.len) {
3195 count = dump->driver_dump.hdr.len - off;
3196 rc = count;
3197 }
3198
3199 if (count && off < sizeof(dump->driver_dump)) {
3200 if (off + count > sizeof(dump->driver_dump))
3201 len = sizeof(dump->driver_dump) - off;
3202 else
3203 len = count;
3204 src = (u8 *)&dump->driver_dump + off;
3205 memcpy(buf, src, len);
3206 buf += len;
3207 off += len;
3208 count -= len;
3209 }
3210
3211 off -= sizeof(dump->driver_dump);
3212
3213 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3214 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3215 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3216 else
3217 len = count;
3218 src = (u8 *)&dump->ioa_dump + off;
3219 memcpy(buf, src, len);
3220 buf += len;
3221 off += len;
3222 count -= len;
3223 }
3224
3225 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3226
3227 while (count) {
3228 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3229 len = PAGE_ALIGN(off) - off;
3230 else
3231 len = count;
3232 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3233 src += off & ~PAGE_MASK;
3234 memcpy(buf, src, len);
3235 buf += len;
3236 off += len;
3237 count -= len;
3238 }
3239
3240 kref_put(&dump->kref, ipr_release_dump);
3241 return rc;
3242}
3243
3244/**
3245 * ipr_alloc_dump - Prepare for adapter dump
3246 * @ioa_cfg: ioa config struct
3247 *
3248 * Return value:
3249 * 0 on success / other on failure
3250 **/
3251static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3252{
3253 struct ipr_dump *dump;
3254 unsigned long lock_flags = 0;
3255
0bc42e35 3256 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3257
3258 if (!dump) {
3259 ipr_err("Dump memory allocation failed\n");
3260 return -ENOMEM;
3261 }
3262
1da177e4
LT		 3263 kref_init(&dump->kref);
3264 dump->ioa_cfg = ioa_cfg;
3265
3266 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3267
3268 if (INACTIVE != ioa_cfg->sdt_state) {
3269 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3270 kfree(dump);
3271 return 0;
3272 }
3273
3274 ioa_cfg->dump = dump;
3275 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3276 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3277 ioa_cfg->dump_taken = 1;
3278 schedule_work(&ioa_cfg->work_q);
3279 }
3280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3281
1da177e4
LT		 3282 return 0;
3283}
3284
3285/**
3286 * ipr_free_dump - Free adapter dump memory
3287 * @ioa_cfg: ioa config struct
3288 *
3289 * Return value:
3290 * 0 on success / other on failure
3291 **/
3292static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3293{
3294 struct ipr_dump *dump;
3295 unsigned long lock_flags = 0;
3296
3297 ENTER;
3298
3299 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3300 dump = ioa_cfg->dump;
3301 if (!dump) {
3302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3303 return 0;
3304 }
3305
3306 ioa_cfg->dump = NULL;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308
3309 kref_put(&dump->kref, ipr_release_dump);
3310
3311 LEAVE;
3312 return 0;
3313}
3314
3315/**
3316 * ipr_write_dump - Setup dump state of adapter
3317 * @kobj: kobject struct
91a69029 3318 * @bin_attr: bin_attribute struct
1da177e4
LT		 3319 * @buf: buffer
3320 * @off: offset
3321 * @count: buffer size
3322 *
3323 * Return value:
3324 * number of bytes printed to buffer
3325 **/
91a69029
ZR		 3326static ssize_t ipr_write_dump(struct kobject *kobj,
3327 struct bin_attribute *bin_attr,
3328 char *buf, loff_t off, size_t count)
1da177e4 3329{
ee959b00 3330 struct device *cdev = container_of(kobj, struct device, kobj);
1da177e4
LT		 3331 struct Scsi_Host *shost = class_to_shost(cdev);
3332 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3333 int rc;
3334
3335 if (!capable(CAP_SYS_ADMIN))
3336 return -EACCES;
3337
3338 if (buf[0] == '1')
3339 rc = ipr_alloc_dump(ioa_cfg);
3340 else if (buf[0] == '0')
3341 rc = ipr_free_dump(ioa_cfg);
3342 else
3343 return -EINVAL;
3344
3345 if (rc)
3346 return rc;
3347 else
3348 return count;
3349}
3350
3351static struct bin_attribute ipr_dump_attr = {
3352 .attr = {
3353 .name = "dump",
3354 .mode = S_IRUSR | S_IWUSR,
3355 },
3356 .size = 0,
3357 .read = ipr_read_dump,
3358 .write = ipr_write_dump
3359};
3360#else
3361static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3362#endif
3363
3364/**
3365 * ipr_change_queue_depth - Change the device's queue depth
3366 * @sdev: scsi device struct
3367 * @qdepth: depth to set
3368 *
3369 * Return value:
3370 * actual depth set
3371 **/
3372static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3373{
35a39691
BK		 3374 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3375 struct ipr_resource_entry *res;
3376 unsigned long lock_flags = 0;
3377
3378 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3379 res = (struct ipr_resource_entry *)sdev->hostdata;
3380
3381 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3382 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3383 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3384
1da177e4
LT		 3385 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3386 return sdev->queue_depth;
3387}
3388
3389/**
3390 * ipr_change_queue_type - Change the device's queue type
3391 * @dsev: scsi device struct
3392 * @tag_type: type of tags to use
3393 *
3394 * Return value:
3395 * actual queue type set
3396 **/
3397static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3398{
3399 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3400 struct ipr_resource_entry *res;
3401 unsigned long lock_flags = 0;
3402
3403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3404 res = (struct ipr_resource_entry *)sdev->hostdata;
3405
3406 if (res) {
3407 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3408 /*
3409 * We don't bother quiescing the device here since the
3410 * adapter firmware does it for us.
3411 */
3412 scsi_set_tag_type(sdev, tag_type);
3413
3414 if (tag_type)
3415 scsi_activate_tcq(sdev, sdev->queue_depth);
3416 else
3417 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3418 } else
3419 tag_type = 0;
3420 } else
3421 tag_type = 0;
3422
3423 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3424 return tag_type;
3425}
3426
3427/**
3428 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3429 * @dev: device struct
3430 * @buf: buffer
3431 *
3432 * Return value:
3433 * number of bytes printed to buffer
3434 **/
10523b3b 3435static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3436{
3437 struct scsi_device *sdev = to_scsi_device(dev);
3438 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3439 struct ipr_resource_entry *res;
3440 unsigned long lock_flags = 0;
3441 ssize_t len = -ENXIO;
3442
3443 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3444 res = (struct ipr_resource_entry *)sdev->hostdata;
3445 if (res)
3446 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3447 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3448 return len;
3449}
3450
3451static struct device_attribute ipr_adapter_handle_attr = {
3452 .attr = {
3453 .name = "adapter_handle",
3454 .mode = S_IRUSR,
3455 },
3456 .show = ipr_show_adapter_handle
3457};
3458
3459static struct device_attribute *ipr_dev_attrs[] = {
3460 &ipr_adapter_handle_attr,
3461 NULL,
3462};
3463
3464/**
3465 * ipr_biosparam - Return the HSC mapping
3466 * @sdev: scsi device struct
3467 * @block_device: block device pointer
3468 * @capacity: capacity of the device
3469 * @parm: Array containing returned HSC values.
3470 *
3471 * This function generates the HSC parms that fdisk uses.
3472 * We want to make sure we return something that places partitions
3473 * on 4k boundaries for best performance with the IOA.
3474 *
3475 * Return value:
3476 * 0 on success
3477 **/
3478static int ipr_biosparam(struct scsi_device *sdev,
3479 struct block_device *block_device,
3480 sector_t capacity, int *parm)
3481{
3482 int heads, sectors;
3483 sector_t cylinders;
3484
3485 heads = 128;
3486 sectors = 32;
3487
3488 cylinders = capacity;
3489 sector_div(cylinders, (128 * 32));
3490
3491 /* return result */
3492 parm[0] = heads;
3493 parm[1] = sectors;
3494 parm[2] = cylinders;
3495
3496 return 0;
3497}
3498
35a39691
BK		 3499/**
3500 * ipr_find_starget - Find target based on bus/target.
3501 * @starget: scsi target struct
3502 *
3503 * Return value:
3504 * resource entry pointer if found / NULL if not found
3505 **/
3506static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3507{
3508 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3509 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3510 struct ipr_resource_entry *res;
3511
3512 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3513 if ((res->cfgte.res_addr.bus == starget->channel) &&
3514 (res->cfgte.res_addr.target == starget->id) &&
3515 (res->cfgte.res_addr.lun == 0)) {
3516 return res;
3517 }
3518 }
3519
3520 return NULL;
3521}
3522
3523static struct ata_port_info sata_port_info;
3524
3525/**
3526 * ipr_target_alloc - Prepare for commands to a SCSI target
3527 * @starget: scsi target struct
3528 *
3529 * If the device is a SATA device, this function allocates an
3530 * ATA port with libata, else it does nothing.
3531 *
3532 * Return value:
3533 * 0 on success / non-0 on failure
3534 **/
3535static int ipr_target_alloc(struct scsi_target *starget)
3536{
3537 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3538 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3539 struct ipr_sata_port *sata_port;
3540 struct ata_port *ap;
3541 struct ipr_resource_entry *res;
3542 unsigned long lock_flags;
3543
3544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3545 res = ipr_find_starget(starget);
3546 starget->hostdata = NULL;
3547
3548 if (res && ipr_is_gata(res)) {
3549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3550 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3551 if (!sata_port)
3552 return -ENOMEM;
3553
3554 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3555 if (ap) {
3556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3557 sata_port->ioa_cfg = ioa_cfg;
3558 sata_port->ap = ap;
3559 sata_port->res = res;
3560
3561 res->sata_port = sata_port;
3562 ap->private_data = sata_port;
3563 starget->hostdata = sata_port;
3564 } else {
3565 kfree(sata_port);
3566 return -ENOMEM;
3567 }
3568 }
3569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3570
3571 return 0;
3572}
3573
3574/**
3575 * ipr_target_destroy - Destroy a SCSI target
3576 * @starget: scsi target struct
3577 *
3578 * If the device was a SATA device, this function frees the libata
3579 * ATA port, else it does nothing.
3580 *
3581 **/
3582static void ipr_target_destroy(struct scsi_target *starget)
3583{
3584 struct ipr_sata_port *sata_port = starget->hostdata;
3585
3586 if (sata_port) {
3587 starget->hostdata = NULL;
3588 ata_sas_port_destroy(sata_port->ap);
3589 kfree(sata_port);
3590 }
3591}
3592
3593/**
3594 * ipr_find_sdev - Find device based on bus/target/lun.
3595 * @sdev: scsi device struct
3596 *
3597 * Return value:
3598 * resource entry pointer if found / NULL if not found
3599 **/
3600static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3601{
3602 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3603 struct ipr_resource_entry *res;
3604
3605 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3606 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3607 (res->cfgte.res_addr.target == sdev->id) &&
3608 (res->cfgte.res_addr.lun == sdev->lun))
3609 return res;
3610 }
3611
3612 return NULL;
3613}
3614
1da177e4
LT		 3615/**
3616 * ipr_slave_destroy - Unconfigure a SCSI device
3617 * @sdev: scsi device struct
3618 *
3619 * Return value:
3620 * nothing
3621 **/
3622static void ipr_slave_destroy(struct scsi_device *sdev)
3623{
3624 struct ipr_resource_entry *res;
3625 struct ipr_ioa_cfg *ioa_cfg;
3626 unsigned long lock_flags = 0;
3627
3628 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3629
3630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3631 res = (struct ipr_resource_entry *) sdev->hostdata;
3632 if (res) {
35a39691
BK		 3633 if (res->sata_port)
3634 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3635 sdev->hostdata = NULL;
3636 res->sdev = NULL;
35a39691 3637 res->sata_port = NULL;
1da177e4
LT		 3638 }
3639 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3640}
3641
3642/**
3643 * ipr_slave_configure - Configure a SCSI device
3644 * @sdev: scsi device struct
3645 *
3646 * This function configures the specified scsi device.
3647 *
3648 * Return value:
3649 * 0 on success
3650 **/
3651static int ipr_slave_configure(struct scsi_device *sdev)
3652{
3653 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3654 struct ipr_resource_entry *res;
3655 unsigned long lock_flags = 0;
3656
3657 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3658 res = sdev->hostdata;
3659 if (res) {
3660 if (ipr_is_af_dasd_device(res))
3661 sdev->type = TYPE_RAID;
0726ce26 3662 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3663 sdev->scsi_level = 4;
0726ce26
BK		 3664 sdev->no_uld_attach = 1;
3665 }
1da177e4 3666 if (ipr_is_vset_device(res)) {
242f9dcb
JA		 3667 blk_queue_rq_timeout(sdev->request_queue,
3668 IPR_VSET_RW_TIMEOUT);
1da177e4
LT		 3669 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3670 }
e4fbf44e 3671 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3672 sdev->allow_restart = 1;
35a39691
BK		 3673 if (ipr_is_gata(res) && res->sata_port) {
3674 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3675 ata_sas_slave_configure(sdev, res->sata_port->ap);
3676 } else {
3677 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3678 }
1da177e4
LT		 3679 }
3680 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3681 return 0;
3682}
3683
35a39691
BK		 3684/**
3685 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3686 * @sdev: scsi device struct
3687 *
3688 * This function initializes an ATA port so that future commands
3689 * sent through queuecommand will work.
3690 *
3691 * Return value:
3692 * 0 on success
3693 **/
3694static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3695{
3696 struct ipr_sata_port *sata_port = NULL;
3697 int rc = -ENXIO;
3698
3699 ENTER;
3700 if (sdev->sdev_target)
3701 sata_port = sdev->sdev_target->hostdata;
3702 if (sata_port)
3703 rc = ata_sas_port_init(sata_port->ap);
3704 if (rc)
3705 ipr_slave_destroy(sdev);
3706
3707 LEAVE;
3708 return rc;
3709}
3710
1da177e4
LT		 3711/**
3712 * ipr_slave_alloc - Prepare for commands to a device.
3713 * @sdev: scsi device struct
3714 *
3715 * This function saves a pointer to the resource entry
3716 * in the scsi device struct if the device exists. We
3717 * can then use this pointer in ipr_queuecommand when
3718 * handling new commands.
3719 *
3720 * Return value:
692aebfc 3721 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3722 **/
3723static int ipr_slave_alloc(struct scsi_device *sdev)
3724{
3725 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3726 struct ipr_resource_entry *res;
3727 unsigned long lock_flags;
692aebfc 3728 int rc = -ENXIO;
1da177e4
LT		 3729
3730 sdev->hostdata = NULL;
3731
3732 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3733
35a39691
BK		 3734 res = ipr_find_sdev(sdev);
3735 if (res) {
3736 res->sdev = sdev;
3737 res->add_to_ml = 0;
3738 res->in_erp = 0;
3739 sdev->hostdata = res;
3740 if (!ipr_is_naca_model(res))
3741 res->needs_sync_complete = 1;
3742 rc = 0;
3743 if (ipr_is_gata(res)) {
3744 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3745 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3746 }
3747 }
3748
3749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3750
692aebfc 3751 return rc;
1da177e4
LT		 3752}
3753
3754/**
3755 * ipr_eh_host_reset - Reset the host adapter
3756 * @scsi_cmd: scsi command struct
3757 *
3758 * Return value:
3759 * SUCCESS / FAILED
3760 **/
df0ae249 3761static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3762{
3763 struct ipr_ioa_cfg *ioa_cfg;
3764 int rc;
3765
3766 ENTER;
3767 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3768
3769 dev_err(&ioa_cfg->pdev->dev,
3770 "Adapter being reset as a result of error recovery.\n");
3771
3772 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3773 ioa_cfg->sdt_state = GET_DUMP;
3774
3775 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3776
3777 LEAVE;
3778 return rc;
3779}
3780
df0ae249
JG		 3781static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3782{
3783 int rc;
3784
3785 spin_lock_irq(cmd->device->host->host_lock);
3786 rc = __ipr_eh_host_reset(cmd);
3787 spin_unlock_irq(cmd->device->host->host_lock);
3788
3789 return rc;
3790}
3791
c6513096
BK		 3792/**
3793 * ipr_device_reset - Reset the device
3794 * @ioa_cfg: ioa config struct
3795 * @res: resource entry struct
3796 *
3797 * This function issues a device reset to the affected device.
3798 * If the device is a SCSI device, a LUN reset will be sent
3799 * to the device first. If that does not work, a target reset
35a39691
BK		 3800 * will be sent. If the device is a SATA device, a PHY reset will
3801 * be sent.
c6513096
BK		 3802 *
3803 * Return value:
3804 * 0 on success / non-zero on failure
3805 **/
3806static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3807 struct ipr_resource_entry *res)
3808{
3809 struct ipr_cmnd *ipr_cmd;
3810 struct ipr_ioarcb *ioarcb;
3811 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3812 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3813 u32 ioasc;
3814
3815 ENTER;
3816 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3817 ioarcb = &ipr_cmd->ioarcb;
3818 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3819 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3820
3821 ioarcb->res_handle = res->cfgte.res_handle;
3822 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3823 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3824 if (ipr_is_gata(res)) {
3825 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3826 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3827 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3828 }
c6513096
BK		 3829
3830 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3831 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3832 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3833 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3834 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3835 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3836
3837 LEAVE;
3838 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3839}
3840
35a39691
BK		 3841/**
3842 * ipr_sata_reset - Reset the SATA port
cc0680a5 3843 * @link: SATA link to reset
35a39691
BK		 3844 * @classes: class of the attached device
3845 *
cc0680a5 3846 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 3847 *
3848 * Return value:
3849 * 0 on success / non-zero on failure
3850 **/
cc0680a5 3851static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 3852 unsigned long deadline)
35a39691 3853{
cc0680a5 3854 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 3855 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3856 struct ipr_resource_entry *res;
3857 unsigned long lock_flags = 0;
3858 int rc = -ENXIO;
3859
3860 ENTER;
3861 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3862 while(ioa_cfg->in_reset_reload) {
3863 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3864 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3865 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3866 }
3867
35a39691
BK		 3868 res = sata_port->res;
3869 if (res) {
3870 rc = ipr_device_reset(ioa_cfg, res);
3871 switch(res->cfgte.proto) {
3872 case IPR_PROTO_SATA:
3873 case IPR_PROTO_SAS_STP:
3874 *classes = ATA_DEV_ATA;
3875 break;
3876 case IPR_PROTO_SATA_ATAPI:
3877 case IPR_PROTO_SAS_STP_ATAPI:
3878 *classes = ATA_DEV_ATAPI;
3879 break;
3880 default:
3881 *classes = ATA_DEV_UNKNOWN;
3882 break;
3883 };
3884 }
3885
3886 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3887 LEAVE;
3888 return rc;
3889}
3890
1da177e4
LT		 3891/**
3892 * ipr_eh_dev_reset - Reset the device
3893 * @scsi_cmd: scsi command struct
3894 *
3895 * This function issues a device reset to the affected device.
3896 * A LUN reset will be sent to the device first. If that does
3897 * not work, a target reset will be sent.
3898 *
3899 * Return value:
3900 * SUCCESS / FAILED
3901 **/
94d0e7b8 3902static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3903{
3904 struct ipr_cmnd *ipr_cmd;
3905 struct ipr_ioa_cfg *ioa_cfg;
3906 struct ipr_resource_entry *res;
35a39691
BK		 3907 struct ata_port *ap;
3908 int rc = 0;
1da177e4
LT		 3909
3910 ENTER;
3911 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3912 res = scsi_cmd->device->hostdata;
3913
eeb88307 3914 if (!res)
1da177e4
LT		 3915 return FAILED;
3916
3917 /*
3918 * If we are currently going through reset/reload, return failed. This will force the
3919 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3920 * reset to complete
3921 */
3922 if (ioa_cfg->in_reset_reload)
3923 return FAILED;
3924 if (ioa_cfg->ioa_is_dead)
3925 return FAILED;
3926
3927 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3928 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3929 if (ipr_cmd->scsi_cmd)
3930 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3931 if (ipr_cmd->qc)
3932 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3933 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3934 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3935 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3936 }
1da177e4
LT		 3937 }
3938 }
3939
3940 res->resetting_device = 1;
fb3ed3cb 3941 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3942
3943 if (ipr_is_gata(res) && res->sata_port) {
3944 ap = res->sata_port->ap;
3945 spin_unlock_irq(scsi_cmd->device->host->host_lock);
a1efdaba 3946 ata_std_error_handler(ap);
35a39691 3947 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3948
3949 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3950 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3951 rc = -EIO;
3952 break;
3953 }
3954 }
35a39691
BK		 3955 } else
3956 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3957 res->resetting_device = 0;
3958
1da177e4 3959 LEAVE;
c6513096 3960 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3961}
3962
94d0e7b8
JG		 3963static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3964{
3965 int rc;
3966
3967 spin_lock_irq(cmd->device->host->host_lock);
3968 rc = __ipr_eh_dev_reset(cmd);
3969 spin_unlock_irq(cmd->device->host->host_lock);
3970
3971 return rc;
3972}
3973
1da177e4
LT		 3974/**
3975 * ipr_bus_reset_done - Op done function for bus reset.
3976 * @ipr_cmd: ipr command struct
3977 *
3978 * This function is the op done function for a bus reset
3979 *
3980 * Return value:
3981 * none
3982 **/
3983static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3984{
3985 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3986 struct ipr_resource_entry *res;
3987
3988 ENTER;
3989 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3990 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3991 sizeof(res->cfgte.res_handle))) {
3992 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3993 break;
3994 }
3995 }
3996
3997 /*
3998 * If abort has not completed, indicate the reset has, else call the
3999 * abort's done function to wake the sleeping eh thread
4000 */
4001 if (ipr_cmd->sibling->sibling)
4002 ipr_cmd->sibling->sibling = NULL;
4003 else
4004 ipr_cmd->sibling->done(ipr_cmd->sibling);
4005
4006 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4007 LEAVE;
4008}
4009
4010/**
4011 * ipr_abort_timeout - An abort task has timed out
4012 * @ipr_cmd: ipr command struct
4013 *
4014 * This function handles when an abort task times out. If this
4015 * happens we issue a bus reset since we have resources tied
4016 * up that must be freed before returning to the midlayer.
4017 *
4018 * Return value:
4019 * none
4020 **/
4021static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4022{
4023 struct ipr_cmnd *reset_cmd;
4024 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4025 struct ipr_cmd_pkt *cmd_pkt;
4026 unsigned long lock_flags = 0;
4027
4028 ENTER;
4029 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4030 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4032 return;
4033 }
4034
fb3ed3cb 4035 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4036 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4037 ipr_cmd->sibling = reset_cmd;
4038 reset_cmd->sibling = ipr_cmd;
4039 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4040 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4041 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4042 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4043 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4044
4045 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4047 LEAVE;
4048}
4049
4050/**
4051 * ipr_cancel_op - Cancel specified op
4052 * @scsi_cmd: scsi command struct
4053 *
4054 * This function cancels specified op.
4055 *
4056 * Return value:
4057 * SUCCESS / FAILED
4058 **/
4059static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4060{
4061 struct ipr_cmnd *ipr_cmd;
4062 struct ipr_ioa_cfg *ioa_cfg;
4063 struct ipr_resource_entry *res;
4064 struct ipr_cmd_pkt *cmd_pkt;
4065 u32 ioasc;
4066 int op_found = 0;
4067
4068 ENTER;
4069 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4070 res = scsi_cmd->device->hostdata;
4071
8fa728a2
JG		 4072 /* If we are currently going through reset/reload, return failed.
4073 * This will force the mid-layer to call ipr_eh_host_reset,
4074 * which will then go to sleep and wait for the reset to complete
4075 */
4076 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4077 return FAILED;
04d9768f 4078 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4079 return FAILED;
4080
4081 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4082 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4083 ipr_cmd->done = ipr_scsi_eh_done;
4084 op_found = 1;
4085 break;
4086 }
4087 }
4088
4089 if (!op_found)
4090 return SUCCESS;
4091
4092 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4093 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4094 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4095 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4096 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4097 ipr_cmd->u.sdev = scsi_cmd->device;
4098
fb3ed3cb
BK		 4099 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4100 scsi_cmd->cmnd[0]);
1da177e4
LT		 4101 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4102 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4103
4104 /*
4105 * If the abort task timed out and we sent a bus reset, we will get
4106 * one the following responses to the abort
4107 */
4108 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4109 ioasc = 0;
4110 ipr_trace;
4111 }
4112
4113 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4114 if (!ipr_is_naca_model(res))
4115 res->needs_sync_complete = 1;
1da177e4
LT		 4116
4117 LEAVE;
4118 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4119}
4120
4121/**
4122 * ipr_eh_abort - Abort a single op
4123 * @scsi_cmd: scsi command struct
4124 *
4125 * Return value:
4126 * SUCCESS / FAILED
4127 **/
4128static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4129{
8fa728a2
JG		 4130 unsigned long flags;
4131 int rc;
1da177e4
LT		 4132
4133 ENTER;
1da177e4 4134
8fa728a2
JG		 4135 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4136 rc = ipr_cancel_op(scsi_cmd);
4137 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4138
4139 LEAVE;
8fa728a2 4140 return rc;
1da177e4
LT		 4141}
4142
4143/**
4144 * ipr_handle_other_interrupt - Handle "other" interrupts
4145 * @ioa_cfg: ioa config struct
4146 * @int_reg: interrupt register
4147 *
4148 * Return value:
4149 * IRQ_NONE / IRQ_HANDLED
4150 **/
4151static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4152 volatile u32 int_reg)
4153{
4154 irqreturn_t rc = IRQ_HANDLED;
4155
4156 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4157 /* Mask the interrupt */
4158 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4159
4160 /* Clear the interrupt */
4161 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4162 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4163
4164 list_del(&ioa_cfg->reset_cmd->queue);
4165 del_timer(&ioa_cfg->reset_cmd->timer);
4166 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4167 } else {
4168 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4169 ioa_cfg->ioa_unit_checked = 1;
4170 else
4171 dev_err(&ioa_cfg->pdev->dev,
4172 "Permanent IOA failure. 0x%08X\n", int_reg);
4173
4174 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4175 ioa_cfg->sdt_state = GET_DUMP;
4176
4177 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4178 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4179 }
4180
4181 return rc;
4182}
4183
4184/**
4185 * ipr_isr - Interrupt service routine
4186 * @irq: irq number
4187 * @devp: pointer to ioa config struct
1da177e4
LT		 4188 *
4189 * Return value:
4190 * IRQ_NONE / IRQ_HANDLED
4191 **/
7d12e780 4192static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4193{
4194 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4195 unsigned long lock_flags = 0;
4196 volatile u32 int_reg, int_mask_reg;
4197 u32 ioasc;
4198 u16 cmd_index;
4199 struct ipr_cmnd *ipr_cmd;
4200 irqreturn_t rc = IRQ_NONE;
4201
4202 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4203
4204 /* If interrupts are disabled, ignore the interrupt */
4205 if (!ioa_cfg->allow_interrupts) {
4206 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4207 return IRQ_NONE;
4208 }
4209
4210 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4211 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4212
4213 /* If an interrupt on the adapter did not occur, ignore it */
4214 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4216 return IRQ_NONE;
4217 }
4218
4219 while (1) {
4220 ipr_cmd = NULL;
4221
4222 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4223 ioa_cfg->toggle_bit) {
4224
4225 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4226 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4227
4228 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4229 ioa_cfg->errors_logged++;
4230 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4231
4232 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4233 ioa_cfg->sdt_state = GET_DUMP;
4234
4235 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4236 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4237 return IRQ_HANDLED;
4238 }
4239
4240 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4241
4242 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4243
4244 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4245
4246 list_del(&ipr_cmd->queue);
4247 del_timer(&ipr_cmd->timer);
4248 ipr_cmd->done(ipr_cmd);
4249
4250 rc = IRQ_HANDLED;
4251
4252 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4253 ioa_cfg->hrrq_curr++;
4254 } else {
4255 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4256 ioa_cfg->toggle_bit ^= 1u;
4257 }
4258 }
4259
4260 if (ipr_cmd != NULL) {
4261 /* Clear the PCI interrupt */
4262 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4263 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4264 } else
4265 break;
4266 }
4267
4268 if (unlikely(rc == IRQ_NONE))
4269 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4270
4271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4272 return rc;
4273}
4274
4275/**
4276 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4277 * @ioa_cfg: ioa config struct
4278 * @ipr_cmd: ipr command struct
4279 *
4280 * Return value:
4281 * 0 on success / -1 on failure
4282 **/
4283static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4284 struct ipr_cmnd *ipr_cmd)
4285{
63015bc9
FT		 4286 int i, nseg;
4287 struct scatterlist *sg;
1da177e4
LT		 4288 u32 length;
4289 u32 ioadl_flags = 0;
4290 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4291 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4292 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4293
63015bc9
FT		 4294 length = scsi_bufflen(scsi_cmd);
4295 if (!length)
1da177e4
LT		 4296 return 0;
4297
63015bc9
FT		 4298 nseg = scsi_dma_map(scsi_cmd);
4299 if (nseg < 0) {
4300 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4301 return -1;
4302 }
51b1c7e1 4303
63015bc9
FT		 4304 ipr_cmd->dma_use_sg = nseg;
4305
4306 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4307 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4308 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4309 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4310 ioarcb->write_ioadl_len =
4311 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4312 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4313 ioadl_flags = IPR_IOADL_FLAGS_READ;
4314 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4315 ioarcb->read_ioadl_len =
4316 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4317 }
1da177e4 4318
63015bc9
FT		 4319 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4320 ioadl = ioarcb->add_data.u.ioadl;
4321 ioarcb->write_ioadl_addr =
4322 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4323 offsetof(struct ipr_ioarcb, add_data));
4324 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4325 }
1da177e4 4326
63015bc9
FT		 4327 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4328 ioadl[i].flags_and_data_len =
4329 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4330 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4331 }
4332
63015bc9
FT		 4333 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4334 return 0;
1da177e4
LT		 4335}
4336
4337/**
4338 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4339 * @scsi_cmd: scsi command struct
4340 *
4341 * Return value:
4342 * task attributes
4343 **/
4344static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4345{
4346 u8 tag[2];
4347 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4348
4349 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4350 switch (tag[0]) {
4351 case MSG_SIMPLE_TAG:
4352 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4353 break;
4354 case MSG_HEAD_TAG:
4355 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4356 break;
4357 case MSG_ORDERED_TAG:
4358 rc = IPR_FLAGS_LO_ORDERED_TASK;
4359 break;
4360 };
4361 }
4362
4363 return rc;
4364}
4365
4366/**
4367 * ipr_erp_done - Process completion of ERP for a device
4368 * @ipr_cmd: ipr command struct
4369 *
4370 * This function copies the sense buffer into the scsi_cmd
4371 * struct and pushes the scsi_done function.
4372 *
4373 * Return value:
4374 * nothing
4375 **/
4376static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4377{
4378 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4379 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4380 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4381 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4382
4383 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4384 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4385 scmd_printk(KERN_ERR, scsi_cmd,
4386 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4387 } else {
4388 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4389 SCSI_SENSE_BUFFERSIZE);
4390 }
4391
4392 if (res) {
ee0a90fa
BK		 4393 if (!ipr_is_naca_model(res))
4394 res->needs_sync_complete = 1;
1da177e4
LT		 4395 res->in_erp = 0;
4396 }
63015bc9 4397 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4398 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4399 scsi_cmd->scsi_done(scsi_cmd);
4400}
4401
4402/**
4403 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4404 * @ipr_cmd: ipr command struct
4405 *
4406 * Return value:
4407 * none
4408 **/
4409static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4410{
51b1c7e1
BK		 4411 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4412 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4413 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4414
4415 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4416 ioarcb->write_data_transfer_length = 0;
4417 ioarcb->read_data_transfer_length = 0;
4418 ioarcb->write_ioadl_len = 0;
4419 ioarcb->read_ioadl_len = 0;
4420 ioasa->ioasc = 0;
4421 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4422 ioarcb->write_ioadl_addr =
4423 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4424 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4425}
4426
4427/**
4428 * ipr_erp_request_sense - Send request sense to a device
4429 * @ipr_cmd: ipr command struct
4430 *
4431 * This function sends a request sense to a device as a result
4432 * of a check condition.
4433 *
4434 * Return value:
4435 * nothing
4436 **/
4437static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4438{
4439 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4440 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4441
4442 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4443 ipr_erp_done(ipr_cmd);
4444 return;
4445 }
4446
4447 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4448
4449 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4450 cmd_pkt->cdb[0] = REQUEST_SENSE;
4451 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4452 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4453 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4454 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4455
4456 ipr_cmd->ioadl[0].flags_and_data_len =
4457 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4458 ipr_cmd->ioadl[0].address =
4459 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4460
4461 ipr_cmd->ioarcb.read_ioadl_len =
4462 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4463 ipr_cmd->ioarcb.read_data_transfer_length =
4464 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4465
4466 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4467 IPR_REQUEST_SENSE_TIMEOUT * 2);
4468}
4469
4470/**
4471 * ipr_erp_cancel_all - Send cancel all to a device
4472 * @ipr_cmd: ipr command struct
4473 *
4474 * This function sends a cancel all to a device to clear the
4475 * queue. If we are running TCQ on the device, QERR is set to 1,
4476 * which means all outstanding ops have been dropped on the floor.
4477 * Cancel all will return them to us.
4478 *
4479 * Return value:
4480 * nothing
4481 **/
4482static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4483{
4484 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4485 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4486 struct ipr_cmd_pkt *cmd_pkt;
4487
4488 res->in_erp = 1;
4489
4490 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4491
4492 if (!scsi_get_tag_type(scsi_cmd->device)) {
4493 ipr_erp_request_sense(ipr_cmd);
4494 return;
4495 }
4496
4497 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4498 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4499 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4500
4501 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4502 IPR_CANCEL_ALL_TIMEOUT);
4503}
4504
4505/**
4506 * ipr_dump_ioasa - Dump contents of IOASA
4507 * @ioa_cfg: ioa config struct
4508 * @ipr_cmd: ipr command struct
fe964d0a 4509 * @res: resource entry struct
1da177e4
LT		 4510 *
4511 * This function is invoked by the interrupt handler when ops
4512 * fail. It will log the IOASA if appropriate. Only called
4513 * for GPDD ops.
4514 *
4515 * Return value:
4516 * none
4517 **/
4518static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4519 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4520{
4521 int i;
4522 u16 data_len;
b0692dd4 4523 u32 ioasc, fd_ioasc;
1da177e4
LT		 4524 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4525 __be32 *ioasa_data = (__be32 *)ioasa;
4526 int error_index;
4527
4528 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4529 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4530
4531 if (0 == ioasc)
4532 return;
4533
4534 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4535 return;
4536
b0692dd4
BK		 4537 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4538 error_index = ipr_get_error(fd_ioasc);
4539 else
4540 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4541
4542 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4543 /* Don't log an error if the IOA already logged one */
4544 if (ioasa->ilid != 0)
4545 return;
4546
cc9bd5d4
BK		 4547 if (!ipr_is_gscsi(res))
4548 return;
4549
1da177e4
LT		 4550 if (ipr_error_table[error_index].log_ioasa == 0)
4551 return;
4552 }
4553
fe964d0a 4554 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4555
4556 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4557 data_len = sizeof(struct ipr_ioasa);
4558 else
4559 data_len = be16_to_cpu(ioasa->ret_stat_len);
4560
4561 ipr_err("IOASA Dump:\n");
4562
4563 for (i = 0; i < data_len / 4; i += 4) {
4564 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4565 be32_to_cpu(ioasa_data[i]),
4566 be32_to_cpu(ioasa_data[i+1]),
4567 be32_to_cpu(ioasa_data[i+2]),
4568 be32_to_cpu(ioasa_data[i+3]));
4569 }
4570}
4571
4572/**
4573 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4574 * @ioasa: IOASA
4575 * @sense_buf: sense data buffer
4576 *
4577 * Return value:
4578 * none
4579 **/
4580static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4581{
4582 u32 failing_lba;
4583 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4584 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4585 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4586 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4587
4588 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4589
4590 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4591 return;
4592
4593 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4594
4595 if (ipr_is_vset_device(res) &&
4596 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4597 ioasa->u.vset.failing_lba_hi != 0) {
4598 sense_buf[0] = 0x72;
4599 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4600 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4601 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4602
4603 sense_buf[7] = 12;
4604 sense_buf[8] = 0;
4605 sense_buf[9] = 0x0A;
4606 sense_buf[10] = 0x80;
4607
4608 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4609
4610 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4611 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4612 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4613 sense_buf[15] = failing_lba & 0x000000ff;
4614
4615 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4616
4617 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4618 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4619 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4620 sense_buf[19] = failing_lba & 0x000000ff;
4621 } else {
4622 sense_buf[0] = 0x70;
4623 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4624 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4625 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4626
4627 /* Illegal request */
4628 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4629 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4630 sense_buf[7] = 10; /* additional length */
4631
4632 /* IOARCB was in error */
4633 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4634 sense_buf[15] = 0xC0;
4635 else /* Parameter data was invalid */
4636 sense_buf[15] = 0x80;
4637
4638 sense_buf[16] =
4639 ((IPR_FIELD_POINTER_MASK &
4640 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4641 sense_buf[17] =
4642 (IPR_FIELD_POINTER_MASK &
4643 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4644 } else {
4645 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4646 if (ipr_is_vset_device(res))
4647 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4648 else
4649 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4650
4651 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4652 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4653 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4654 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4655 sense_buf[6] = failing_lba & 0x000000ff;
4656 }
4657
4658 sense_buf[7] = 6; /* additional length */
4659 }
4660 }
4661}
4662
ee0a90fa
BK		 4663/**
4664 * ipr_get_autosense - Copy autosense data to sense buffer
4665 * @ipr_cmd: ipr command struct
4666 *
4667 * This function copies the autosense buffer to the buffer
4668 * in the scsi_cmd, if there is autosense available.
4669 *
4670 * Return value:
4671 * 1 if autosense was available / 0 if not
4672 **/
4673static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4674{
4675 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4676
117d2ce1 4677 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4678 return 0;
4679
4680 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4681 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4682 SCSI_SENSE_BUFFERSIZE));
4683 return 1;
4684}
4685
1da177e4
LT		 4686/**
4687 * ipr_erp_start - Process an error response for a SCSI op
4688 * @ioa_cfg: ioa config struct
4689 * @ipr_cmd: ipr command struct
4690 *
4691 * This function determines whether or not to initiate ERP
4692 * on the affected device.
4693 *
4694 * Return value:
4695 * nothing
4696 **/
4697static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4698 struct ipr_cmnd *ipr_cmd)
4699{
4700 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4701 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4702 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4703 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4704
4705 if (!res) {
4706 ipr_scsi_eh_done(ipr_cmd);
4707 return;
4708 }
4709
8a048994 4710 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4711 ipr_gen_sense(ipr_cmd);
4712
cc9bd5d4
BK		 4713 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4714
8a048994 4715 switch (masked_ioasc) {
1da177e4 4716 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4717 if (ipr_is_naca_model(res))
4718 scsi_cmd->result |= (DID_ABORT << 16);
4719 else
4720 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4721 break;
4722 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4723 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4724 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4725 break;
4726 case IPR_IOASC_HW_SEL_TIMEOUT:
4727 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4728 if (!ipr_is_naca_model(res))
4729 res->needs_sync_complete = 1;
1da177e4
LT		 4730 break;
4731 case IPR_IOASC_SYNC_REQUIRED:
4732 if (!res->in_erp)
4733 res->needs_sync_complete = 1;
4734 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4735 break;
4736 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4737 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4738 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4739 break;
4740 case IPR_IOASC_BUS_WAS_RESET:
4741 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4742 /*
4743 * Report the bus reset and ask for a retry. The device
4744 * will give CC/UA the next command.
4745 */
4746 if (!res->resetting_device)
4747 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4748 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4749 if (!ipr_is_naca_model(res))
4750 res->needs_sync_complete = 1;
1da177e4
LT		 4751 break;
4752 case IPR_IOASC_HW_DEV_BUS_STATUS:
4753 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4754 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4755 if (!ipr_get_autosense(ipr_cmd)) {
4756 if (!ipr_is_naca_model(res)) {
4757 ipr_erp_cancel_all(ipr_cmd);
4758 return;
4759 }
4760 }
1da177e4 4761 }
ee0a90fa
BK		 4762 if (!ipr_is_naca_model(res))
4763 res->needs_sync_complete = 1;
1da177e4
LT		 4764 break;
4765 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4766 break;
4767 default:
5b7304fb
BK		 4768 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4769 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4770 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4771 res->needs_sync_complete = 1;
4772 break;
4773 }
4774
63015bc9 4775 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4776 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4777 scsi_cmd->scsi_done(scsi_cmd);
4778}
4779
4780/**
4781 * ipr_scsi_done - mid-layer done function
4782 * @ipr_cmd: ipr command struct
4783 *
4784 * This function is invoked by the interrupt handler for
4785 * ops generated by the SCSI mid-layer
4786 *
4787 * Return value:
4788 * none
4789 **/
4790static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4791{
4792 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4793 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4794 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4795
63015bc9 4796 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4797
4798 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4799 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4800 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4801 scsi_cmd->scsi_done(scsi_cmd);
4802 } else
4803 ipr_erp_start(ioa_cfg, ipr_cmd);
4804}
4805
1da177e4
LT		 4806/**
4807 * ipr_queuecommand - Queue a mid-layer request
4808 * @scsi_cmd: scsi command struct
4809 * @done: done function
4810 *
4811 * This function queues a request generated by the mid-layer.
4812 *
4813 * Return value:
4814 * 0 on success
4815 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4816 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4817 **/
4818static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4819 void (*done) (struct scsi_cmnd *))
4820{
4821 struct ipr_ioa_cfg *ioa_cfg;
4822 struct ipr_resource_entry *res;
4823 struct ipr_ioarcb *ioarcb;
4824 struct ipr_cmnd *ipr_cmd;
4825 int rc = 0;
4826
4827 scsi_cmd->scsi_done = done;
4828 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4829 res = scsi_cmd->device->hostdata;
4830 scsi_cmd->result = (DID_OK << 16);
4831
4832 /*
4833 * We are currently blocking all devices due to a host reset
4834 * We have told the host to stop giving us new requests, but
4835 * ERP ops don't count. FIXME
4836 */
4837 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4838 return SCSI_MLQUEUE_HOST_BUSY;
4839
4840 /*
4841 * FIXME - Create scsi_set_host_offline interface
4842 * and the ioa_is_dead check can be removed
4843 */
4844 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4845 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4846 scsi_cmd->result = (DID_NO_CONNECT << 16);
4847 scsi_cmd->scsi_done(scsi_cmd);
4848 return 0;
4849 }
4850
35a39691
BK		 4851 if (ipr_is_gata(res) && res->sata_port)
4852 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4853
1da177e4
LT		 4854 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4855 ioarcb = &ipr_cmd->ioarcb;
4856 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4857
4858 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4859 ipr_cmd->scsi_cmd = scsi_cmd;
4860 ioarcb->res_handle = res->cfgte.res_handle;
4861 ipr_cmd->done = ipr_scsi_done;
4862 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4863
4864 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4865 if (scsi_cmd->underflow == 0)
4866 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4867
4868 if (res->needs_sync_complete) {
4869 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4870 res->needs_sync_complete = 0;
4871 }
4872
4873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4874 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4875 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4876 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4877 }
4878
4879 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4880 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4881 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4882
1da177e4
LT		 4883 if (likely(rc == 0))
4884 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4885
4886 if (likely(rc == 0)) {
4887 mb();
4888 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4889 ioa_cfg->regs.ioarrin_reg);
4890 } else {
4891 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4892 return SCSI_MLQUEUE_HOST_BUSY;
4893 }
4894
4895 return 0;
4896}
4897
35a39691
BK		 4898/**
4899 * ipr_ioctl - IOCTL handler
4900 * @sdev: scsi device struct
4901 * @cmd: IOCTL cmd
4902 * @arg: IOCTL arg
4903 *
4904 * Return value:
4905 * 0 on success / other on failure
4906 **/
bd705f2d 4907static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4908{
4909 struct ipr_resource_entry *res;
4910
4911 res = (struct ipr_resource_entry *)sdev->hostdata;
0ce3a7e5
BK		 4912 if (res && ipr_is_gata(res)) {
4913 if (cmd == HDIO_GET_IDENTITY)
4914 return -ENOTTY;
35a39691 4915 return ata_scsi_ioctl(sdev, cmd, arg);
0ce3a7e5 4916 }
35a39691
BK		 4917
4918 return -EINVAL;
4919}
4920
1da177e4
LT		 4921/**
4922 * ipr_info - Get information about the card/driver
4923 * @scsi_host: scsi host struct
4924 *
4925 * Return value:
4926 * pointer to buffer with description string
4927 **/
4928static const char * ipr_ioa_info(struct Scsi_Host *host)
4929{
4930 static char buffer[512];
4931 struct ipr_ioa_cfg *ioa_cfg;
4932 unsigned long lock_flags = 0;
4933
4934 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4935
4936 spin_lock_irqsave(host->host_lock, lock_flags);
4937 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4938 spin_unlock_irqrestore(host->host_lock, lock_flags);
4939
4940 return buffer;
4941}
4942
4943static struct scsi_host_template driver_template = {
4944 .module = THIS_MODULE,
4945 .name = "IPR",
4946 .info = ipr_ioa_info,
35a39691 4947 .ioctl = ipr_ioctl,
1da177e4
LT		 4948 .queuecommand = ipr_queuecommand,
4949 .eh_abort_handler = ipr_eh_abort,
4950 .eh_device_reset_handler = ipr_eh_dev_reset,
4951 .eh_host_reset_handler = ipr_eh_host_reset,
4952 .slave_alloc = ipr_slave_alloc,
4953 .slave_configure = ipr_slave_configure,
4954 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4955 .target_alloc = ipr_target_alloc,
4956 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4957 .change_queue_depth = ipr_change_queue_depth,
4958 .change_queue_type = ipr_change_queue_type,
4959 .bios_param = ipr_biosparam,
4960 .can_queue = IPR_MAX_COMMANDS,
4961 .this_id = -1,
4962 .sg_tablesize = IPR_MAX_SGLIST,
4963 .max_sectors = IPR_IOA_MAX_SECTORS,
4964 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4965 .use_clustering = ENABLE_CLUSTERING,
4966 .shost_attrs = ipr_ioa_attrs,
4967 .sdev_attrs = ipr_dev_attrs,
4968 .proc_name = IPR_NAME
4969};
4970
35a39691
BK		 4971/**
4972 * ipr_ata_phy_reset - libata phy_reset handler
4973 * @ap: ata port to reset
4974 *
4975 **/
4976static void ipr_ata_phy_reset(struct ata_port *ap)
4977{
4978 unsigned long flags;
4979 struct ipr_sata_port *sata_port = ap->private_data;
4980 struct ipr_resource_entry *res = sata_port->res;
4981 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4982 int rc;
4983
4984 ENTER;
4985 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4986 while(ioa_cfg->in_reset_reload) {
4987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4988 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4989 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4990 }
4991
4992 if (!ioa_cfg->allow_cmds)
4993 goto out_unlock;
4994
4995 rc = ipr_device_reset(ioa_cfg, res);
4996
4997 if (rc) {
ac8869d5 4998 ata_port_disable(ap);
35a39691
BK		 4999 goto out_unlock;
5000 }
5001
5002 switch(res->cfgte.proto) {
5003 case IPR_PROTO_SATA:
5004 case IPR_PROTO_SAS_STP:
9af5c9c9 5005 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 5006 break;
5007 case IPR_PROTO_SATA_ATAPI:
5008 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 5009 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 5010 break;
5011 default:
9af5c9c9 5012 ap->link.device[0].class = ATA_DEV_UNKNOWN;
ac8869d5 5013 ata_port_disable(ap);
35a39691
BK		 5014 break;
5015 };
5016
5017out_unlock:
5018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5019 LEAVE;
5020}
5021
5022/**
5023 * ipr_ata_post_internal - Cleanup after an internal command
5024 * @qc: ATA queued command
5025 *
5026 * Return value:
5027 * none
5028 **/
5029static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5030{
5031 struct ipr_sata_port *sata_port = qc->ap->private_data;
5032 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5033 struct ipr_cmnd *ipr_cmd;
5034 unsigned long flags;
5035
5036 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5037 while(ioa_cfg->in_reset_reload) {
5038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5039 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5040 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5041 }
5042
35a39691
BK		 5043 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5044 if (ipr_cmd->qc == qc) {
5045 ipr_device_reset(ioa_cfg, sata_port->res);
5046 break;
5047 }
5048 }
5049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5050}
5051
35a39691
BK		 5052/**
5053 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5054 * @regs: destination
5055 * @tf: source ATA taskfile
5056 *
5057 * Return value:
5058 * none
5059 **/
5060static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5061 struct ata_taskfile *tf)
5062{
5063 regs->feature = tf->feature;
5064 regs->nsect = tf->nsect;
5065 regs->lbal = tf->lbal;
5066 regs->lbam = tf->lbam;
5067 regs->lbah = tf->lbah;
5068 regs->device = tf->device;
5069 regs->command = tf->command;
5070 regs->hob_feature = tf->hob_feature;
5071 regs->hob_nsect = tf->hob_nsect;
5072 regs->hob_lbal = tf->hob_lbal;
5073 regs->hob_lbam = tf->hob_lbam;
5074 regs->hob_lbah = tf->hob_lbah;
5075 regs->ctl = tf->ctl;
5076}
5077
5078/**
5079 * ipr_sata_done - done function for SATA commands
5080 * @ipr_cmd: ipr command struct
5081 *
5082 * This function is invoked by the interrupt handler for
5083 * ops generated by the SCSI mid-layer to SATA devices
5084 *
5085 * Return value:
5086 * none
5087 **/
5088static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5089{
5090 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5091 struct ata_queued_cmd *qc = ipr_cmd->qc;
5092 struct ipr_sata_port *sata_port = qc->ap->private_data;
5093 struct ipr_resource_entry *res = sata_port->res;
5094 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5095
5096 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5097 sizeof(struct ipr_ioasa_gata));
5098 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5099
5100 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5101 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5102 res->cfgte.res_addr.target);
5103
5104 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5105 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5106 else
5107 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5108 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5109 ata_qc_complete(qc);
5110}
5111
5112/**
5113 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5114 * @ipr_cmd: ipr command struct
5115 * @qc: ATA queued command
5116 *
5117 **/
5118static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5119 struct ata_queued_cmd *qc)
5120{
5121 u32 ioadl_flags = 0;
5122 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5123 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3be6cbd7 5124 struct ipr_ioadl_desc *last_ioadl = NULL;
dde20207 5125 int len = qc->nbytes;
35a39691 5126 struct scatterlist *sg;
ff2aeb1e 5127 unsigned int si;
35a39691
BK		 5128
5129 if (len == 0)
5130 return;
5131
5132 if (qc->dma_dir == DMA_TO_DEVICE) {
5133 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5134 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5135 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5136 ioarcb->write_ioadl_len =
5137 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5138 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5139 ioadl_flags = IPR_IOADL_FLAGS_READ;
5140 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5141 ioarcb->read_ioadl_len =
5142 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5143 }
5144
ff2aeb1e 5145 for_each_sg(qc->sg, sg, qc->n_elem, si) {
35a39691
BK		 5146 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5147 ioadl->address = cpu_to_be32(sg_dma_address(sg));
3be6cbd7
JG		 5148
5149 last_ioadl = ioadl;
5150 ioadl++;
35a39691 5151 }
3be6cbd7
JG		 5152
5153 if (likely(last_ioadl))
5154 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
35a39691
BK		 5155}
5156
5157/**
5158 * ipr_qc_issue - Issue a SATA qc to a device
5159 * @qc: queued command
5160 *
5161 * Return value:
5162 * 0 if success
5163 **/
5164static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5165{
5166 struct ata_port *ap = qc->ap;
5167 struct ipr_sata_port *sata_port = ap->private_data;
5168 struct ipr_resource_entry *res = sata_port->res;
5169 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5170 struct ipr_cmnd *ipr_cmd;
5171 struct ipr_ioarcb *ioarcb;
5172 struct ipr_ioarcb_ata_regs *regs;
5173
5174 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5175 return AC_ERR_SYSTEM;
35a39691
BK		 5176
5177 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5178 ioarcb = &ipr_cmd->ioarcb;
5179 regs = &ioarcb->add_data.u.regs;
5180
5181 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5182 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5183
5184 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5185 ipr_cmd->qc = qc;
5186 ipr_cmd->done = ipr_sata_done;
5187 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5188 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5189 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5190 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
dde20207 5191 ipr_cmd->dma_use_sg = qc->n_elem;
35a39691
BK		 5192
5193 ipr_build_ata_ioadl(ipr_cmd, qc);
5194 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5195 ipr_copy_sata_tf(regs, &qc->tf);
5196 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5197 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5198
5199 switch (qc->tf.protocol) {
5200 case ATA_PROT_NODATA:
5201 case ATA_PROT_PIO:
5202 break;
5203
5204 case ATA_PROT_DMA:
5205 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5206 break;
5207
0dc36888
TH		 5208 case ATAPI_PROT_PIO:
5209 case ATAPI_PROT_NODATA:
35a39691
BK		 5210 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5211 break;
5212
0dc36888 5213 case ATAPI_PROT_DMA:
35a39691
BK		 5214 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5215 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5216 break;
5217
5218 default:
5219 WARN_ON(1);
0feeed82 5220 return AC_ERR_INVALID;
35a39691
BK		 5221 }
5222
5223 mb();
5224 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5225 ioa_cfg->regs.ioarrin_reg);
5226 return 0;
5227}
5228
4c9bf4e7
TH		 5229/**
5230 * ipr_qc_fill_rtf - Read result TF
5231 * @qc: ATA queued command
5232 *
5233 * Return value:
5234 * true
5235 **/
5236static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
5237{
5238 struct ipr_sata_port *sata_port = qc->ap->private_data;
5239 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5240 struct ata_taskfile *tf = &qc->result_tf;
5241
5242 tf->feature = g->error;
5243 tf->nsect = g->nsect;
5244 tf->lbal = g->lbal;
5245 tf->lbam = g->lbam;
5246 tf->lbah = g->lbah;
5247 tf->device = g->device;
5248 tf->command = g->status;
5249 tf->hob_nsect = g->hob_nsect;
5250 tf->hob_lbal = g->hob_lbal;
5251 tf->hob_lbam = g->hob_lbam;
5252 tf->hob_lbah = g->hob_lbah;
5253 tf->ctl = g->alt_status;
5254
5255 return true;
5256}
5257
35a39691 5258static struct ata_port_operations ipr_sata_ops = {
35a39691 5259 .phy_reset = ipr_ata_phy_reset,
a1efdaba 5260 .hardreset = ipr_sata_reset,
35a39691 5261 .post_internal_cmd = ipr_ata_post_internal,
35a39691
BK		 5262 .qc_prep = ata_noop_qc_prep,
5263 .qc_issue = ipr_qc_issue,
4c9bf4e7 5264 .qc_fill_rtf = ipr_qc_fill_rtf,
35a39691
BK		 5265 .port_start = ata_sas_port_start,
5266 .port_stop = ata_sas_port_stop
5267};
5268
5269static struct ata_port_info sata_port_info = {
5270 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5271 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5272 .pio_mask = 0x10, /* pio4 */
5273 .mwdma_mask = 0x07,
5274 .udma_mask = 0x7f, /* udma0-6 */
5275 .port_ops = &ipr_sata_ops
5276};
5277
1da177e4
LT		 5278#ifdef CONFIG_PPC_PSERIES
5279static const u16 ipr_blocked_processors[] = {
5280 PV_NORTHSTAR,
5281 PV_PULSAR,
5282 PV_POWER4,
5283 PV_ICESTAR,
5284 PV_SSTAR,
5285 PV_POWER4p,
5286 PV_630,
5287 PV_630p
5288};
5289
5290/**
5291 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5292 * @ioa_cfg: ioa cfg struct
5293 *
5294 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5295 * certain pSeries hardware. This function determines if the given
5296 * adapter is in one of these confgurations or not.
5297 *
5298 * Return value:
5299 * 1 if adapter is not supported / 0 if adapter is supported
5300 **/
5301static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5302{
1da177e4
LT		 5303 int i;
5304
44c10138
AK		 5305 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5306 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5307 if (__is_processor(ipr_blocked_processors[i]))
5308 return 1;
1da177e4
LT		 5309 }
5310 }
5311 return 0;
5312}
5313#else
5314#define ipr_invalid_adapter(ioa_cfg) 0
5315#endif
5316
5317/**
5318 * ipr_ioa_bringdown_done - IOA bring down completion.
5319 * @ipr_cmd: ipr command struct
5320 *
5321 * This function processes the completion of an adapter bring down.
5322 * It wakes any reset sleepers.
5323 *
5324 * Return value:
5325 * IPR_RC_JOB_RETURN
5326 **/
5327static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5328{
5329 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5330
5331 ENTER;
5332 ioa_cfg->in_reset_reload = 0;
5333 ioa_cfg->reset_retries = 0;
5334 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5335 wake_up_all(&ioa_cfg->reset_wait_q);
5336
5337 spin_unlock_irq(ioa_cfg->host->host_lock);
5338 scsi_unblock_requests(ioa_cfg->host);
5339 spin_lock_irq(ioa_cfg->host->host_lock);
5340 LEAVE;
5341
5342 return IPR_RC_JOB_RETURN;
5343}
5344
5345/**
5346 * ipr_ioa_reset_done - IOA reset completion.
5347 * @ipr_cmd: ipr command struct
5348 *
5349 * This function processes the completion of an adapter reset.
5350 * It schedules any necessary mid-layer add/removes and
5351 * wakes any reset sleepers.
5352 *
5353 * Return value:
5354 * IPR_RC_JOB_RETURN
5355 **/
5356static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5357{
5358 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5359 struct ipr_resource_entry *res;
5360 struct ipr_hostrcb *hostrcb, *temp;
5361 int i = 0;
5362
5363 ENTER;
5364 ioa_cfg->in_reset_reload = 0;
5365 ioa_cfg->allow_cmds = 1;
5366 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5367 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5368
5369 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5370 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5371 ipr_trace;
5372 break;
5373 }
5374 }
5375 schedule_work(&ioa_cfg->work_q);
5376
5377 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5378 list_del(&hostrcb->queue);
5379 if (i++ < IPR_NUM_LOG_HCAMS)
5380 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5381 else
5382 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5383 }
5384
6bb04170 5385 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5386 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5387
5388 ioa_cfg->reset_retries = 0;
5389 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5390 wake_up_all(&ioa_cfg->reset_wait_q);
5391
30237853 5392 spin_unlock(ioa_cfg->host->host_lock);
1da177e4 5393 scsi_unblock_requests(ioa_cfg->host);
30237853 5394 spin_lock(ioa_cfg->host->host_lock);
1da177e4
LT		 5395
5396 if (!ioa_cfg->allow_cmds)
5397 scsi_block_requests(ioa_cfg->host);
5398
5399 LEAVE;
5400 return IPR_RC_JOB_RETURN;
5401}
5402
5403/**
5404 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5405 * @supported_dev: supported device struct
5406 * @vpids: vendor product id struct
5407 *
5408 * Return value:
5409 * none
5410 **/
5411static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5412 struct ipr_std_inq_vpids *vpids)
5413{
5414 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5415 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5416 supported_dev->num_records = 1;
5417 supported_dev->data_length =
5418 cpu_to_be16(sizeof(struct ipr_supported_device));
5419 supported_dev->reserved = 0;
5420}
5421
5422/**
5423 * ipr_set_supported_devs - Send Set Supported Devices for a device
5424 * @ipr_cmd: ipr command struct
5425 *
5426 * This function send a Set Supported Devices to the adapter
5427 *
5428 * Return value:
5429 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5430 **/
5431static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5432{
5433 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5434 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5435 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5436 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5437 struct ipr_resource_entry *res = ipr_cmd->u.res;
5438
5439 ipr_cmd->job_step = ipr_ioa_reset_done;
5440
5441 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5442 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5443 continue;
5444
5445 ipr_cmd->u.res = res;
5446 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5447
5448 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5449 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5450 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5451
5452 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5453 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5454 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5455
5456 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5457 sizeof(struct ipr_supported_device));
5458 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5459 offsetof(struct ipr_misc_cbs, supp_dev));
5460 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5461 ioarcb->write_data_transfer_length =
5462 cpu_to_be32(sizeof(struct ipr_supported_device));
5463
5464 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5465 IPR_SET_SUP_DEVICE_TIMEOUT);
5466
5467 ipr_cmd->job_step = ipr_set_supported_devs;
5468 return IPR_RC_JOB_RETURN;
5469 }
5470
5471 return IPR_RC_JOB_CONTINUE;
5472}
5473
62275040
BK		 5474/**
5475 * ipr_setup_write_cache - Disable write cache if needed
5476 * @ipr_cmd: ipr command struct
5477 *
5478 * This function sets up adapters write cache to desired setting
5479 *
5480 * Return value:
5481 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5482 **/
5483static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5484{
5485 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5486
5487 ipr_cmd->job_step = ipr_set_supported_devs;
5488 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5489 struct ipr_resource_entry, queue);
5490
5491 if (ioa_cfg->cache_state != CACHE_DISABLED)
5492 return IPR_RC_JOB_CONTINUE;
5493
5494 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5495 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5496 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5497 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5498
5499 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5500
5501 return IPR_RC_JOB_RETURN;
5502}
5503
1da177e4
LT		 5504/**
5505 * ipr_get_mode_page - Locate specified mode page
5506 * @mode_pages: mode page buffer
5507 * @page_code: page code to find
5508 * @len: minimum required length for mode page
5509 *
5510 * Return value:
5511 * pointer to mode page / NULL on failure
5512 **/
5513static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5514 u32 page_code, u32 len)
5515{
5516 struct ipr_mode_page_hdr *mode_hdr;
5517 u32 page_length;
5518 u32 length;
5519
5520 if (!mode_pages || (mode_pages->hdr.length == 0))
5521 return NULL;
5522
5523 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5524 mode_hdr = (struct ipr_mode_page_hdr *)
5525 (mode_pages->data + mode_pages->hdr.block_desc_len);
5526
5527 while (length) {
5528 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5529 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5530 return mode_hdr;
5531 break;
5532 } else {
5533 page_length = (sizeof(struct ipr_mode_page_hdr) +
5534 mode_hdr->page_length);
5535 length -= page_length;
5536 mode_hdr = (struct ipr_mode_page_hdr *)
5537 ((unsigned long)mode_hdr + page_length);
5538 }
5539 }
5540 return NULL;
5541}
5542
5543/**
5544 * ipr_check_term_power - Check for term power errors
5545 * @ioa_cfg: ioa config struct
5546 * @mode_pages: IOAFP mode pages buffer
5547 *
5548 * Check the IOAFP's mode page 28 for term power errors
5549 *
5550 * Return value:
5551 * nothing
5552 **/
5553static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5554 struct ipr_mode_pages *mode_pages)
5555{
5556 int i;
5557 int entry_length;
5558 struct ipr_dev_bus_entry *bus;
5559 struct ipr_mode_page28 *mode_page;
5560
5561 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5562 sizeof(struct ipr_mode_page28));
5563
5564 entry_length = mode_page->entry_length;
5565
5566 bus = mode_page->bus;
5567
5568 for (i = 0; i < mode_page->num_entries; i++) {
5569 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5570 dev_err(&ioa_cfg->pdev->dev,
5571 "Term power is absent on scsi bus %d\n",
5572 bus->res_addr.bus);
5573 }
5574
5575 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5576 }
5577}
5578
5579/**
5580 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5581 * @ioa_cfg: ioa config struct
5582 *
5583 * Looks through the config table checking for SES devices. If
5584 * the SES device is in the SES table indicating a maximum SCSI
5585 * bus speed, the speed is limited for the bus.
5586 *
5587 * Return value:
5588 * none
5589 **/
5590static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5591{
5592 u32 max_xfer_rate;
5593 int i;
5594
5595 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5596 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5597 ioa_cfg->bus_attr[i].bus_width);
5598
5599 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5600 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5601 }
5602}
5603
5604/**
5605 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5606 * @ioa_cfg: ioa config struct
5607 * @mode_pages: mode page 28 buffer
5608 *
5609 * Updates mode page 28 based on driver configuration
5610 *
5611 * Return value:
5612 * none
5613 **/
5614static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5615 struct ipr_mode_pages *mode_pages)
5616{
5617 int i, entry_length;
5618 struct ipr_dev_bus_entry *bus;
5619 struct ipr_bus_attributes *bus_attr;
5620 struct ipr_mode_page28 *mode_page;
5621
5622 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5623 sizeof(struct ipr_mode_page28));
5624
5625 entry_length = mode_page->entry_length;
5626
5627 /* Loop for each device bus entry */
5628 for (i = 0, bus = mode_page->bus;
5629 i < mode_page->num_entries;
5630 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5631 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5632 dev_err(&ioa_cfg->pdev->dev,
5633 "Invalid resource address reported: 0x%08X\n",
5634 IPR_GET_PHYS_LOC(bus->res_addr));
5635 continue;
5636 }
5637
5638 bus_attr = &ioa_cfg->bus_attr[i];
5639 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5640 bus->bus_width = bus_attr->bus_width;
5641 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5642 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5643 if (bus_attr->qas_enabled)
5644 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5645 else
5646 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5647 }
5648}
5649
5650/**
5651 * ipr_build_mode_select - Build a mode select command
5652 * @ipr_cmd: ipr command struct
5653 * @res_handle: resource handle to send command to
5654 * @parm: Byte 2 of Mode Sense command
5655 * @dma_addr: DMA buffer address
5656 * @xfer_len: data transfer length
5657 *
5658 * Return value:
5659 * none
5660 **/
5661static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5662 __be32 res_handle, u8 parm, u32 dma_addr,
5663 u8 xfer_len)
5664{
5665 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5666 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5667
5668 ioarcb->res_handle = res_handle;
5669 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5670 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5671 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5672 ioarcb->cmd_pkt.cdb[1] = parm;
5673 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5674
5675 ioadl->flags_and_data_len =
5676 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5677 ioadl->address = cpu_to_be32(dma_addr);
5678 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5679 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5680}
5681
5682/**
5683 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5684 * @ipr_cmd: ipr command struct
5685 *
5686 * This function sets up the SCSI bus attributes and sends
5687 * a Mode Select for Page 28 to activate them.
5688 *
5689 * Return value:
5690 * IPR_RC_JOB_RETURN
5691 **/
5692static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5693{
5694 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5695 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5696 int length;
5697
5698 ENTER;
4733804c
BK		 5699 ipr_scsi_bus_speed_limit(ioa_cfg);
5700 ipr_check_term_power(ioa_cfg, mode_pages);
5701 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5702 length = mode_pages->hdr.length + 1;
5703 mode_pages->hdr.length = 0;
1da177e4
LT		 5704
5705 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5706 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5707 length);
5708
62275040 5709 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5710 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5711
5712 LEAVE;
5713 return IPR_RC_JOB_RETURN;
5714}
5715
5716/**
5717 * ipr_build_mode_sense - Builds a mode sense command
5718 * @ipr_cmd: ipr command struct
5719 * @res: resource entry struct
5720 * @parm: Byte 2 of mode sense command
5721 * @dma_addr: DMA address of mode sense buffer
5722 * @xfer_len: Size of DMA buffer
5723 *
5724 * Return value:
5725 * none
5726 **/
5727static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5728 __be32 res_handle,
5729 u8 parm, u32 dma_addr, u8 xfer_len)
5730{
5731 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5732 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5733
5734 ioarcb->res_handle = res_handle;
5735 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5736 ioarcb->cmd_pkt.cdb[2] = parm;
5737 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5738 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5739
5740 ioadl->flags_and_data_len =
5741 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5742 ioadl->address = cpu_to_be32(dma_addr);
5743 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5744 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5745}
5746
dfed823e
BK		 5747/**
5748 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5749 * @ipr_cmd: ipr command struct
5750 *
5751 * This function handles the failure of an IOA bringup command.
5752 *
5753 * Return value:
5754 * IPR_RC_JOB_RETURN
5755 **/
5756static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5757{
5758 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5759 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5760
5761 dev_err(&ioa_cfg->pdev->dev,
5762 "0x%02X failed with IOASC: 0x%08X\n",
5763 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5764
5765 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5766 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5767 return IPR_RC_JOB_RETURN;
5768}
5769
5770/**
5771 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5772 * @ipr_cmd: ipr command struct
5773 *
5774 * This function handles the failure of a Mode Sense to the IOAFP.
5775 * Some adapters do not handle all mode pages.
5776 *
5777 * Return value:
5778 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5779 **/
5780static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5781{
5782 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5783
5784 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5785 ipr_cmd->job_step = ipr_setup_write_cache;
5786 return IPR_RC_JOB_CONTINUE;
5787 }
5788
5789 return ipr_reset_cmd_failed(ipr_cmd);
5790}
5791
1da177e4
LT		 5792/**
5793 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5794 * @ipr_cmd: ipr command struct
5795 *
5796 * This function send a Page 28 mode sense to the IOA to
5797 * retrieve SCSI bus attributes.
5798 *
5799 * Return value:
5800 * IPR_RC_JOB_RETURN
5801 **/
5802static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5803{
5804 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5805
5806 ENTER;
5807 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5808 0x28, ioa_cfg->vpd_cbs_dma +
5809 offsetof(struct ipr_misc_cbs, mode_pages),
5810 sizeof(struct ipr_mode_pages));
5811
5812 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5813 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5814
5815 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5816
5817 LEAVE;
5818 return IPR_RC_JOB_RETURN;
5819}
5820
ac09c349
BK		 5821/**
5822 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5823 * @ipr_cmd: ipr command struct
5824 *
5825 * This function enables dual IOA RAID support if possible.
5826 *
5827 * Return value:
5828 * IPR_RC_JOB_RETURN
5829 **/
5830static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5831{
5832 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5833 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5834 struct ipr_mode_page24 *mode_page;
5835 int length;
5836
5837 ENTER;
5838 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5839 sizeof(struct ipr_mode_page24));
5840
5841 if (mode_page)
5842 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5843
5844 length = mode_pages->hdr.length + 1;
5845 mode_pages->hdr.length = 0;
5846
5847 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5848 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5849 length);
5850
5851 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5852 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5853
5854 LEAVE;
5855 return IPR_RC_JOB_RETURN;
5856}
5857
5858/**
5859 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5860 * @ipr_cmd: ipr command struct
5861 *
5862 * This function handles the failure of a Mode Sense to the IOAFP.
5863 * Some adapters do not handle all mode pages.
5864 *
5865 * Return value:
5866 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5867 **/
5868static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5869{
5870 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5871
5872 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5873 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5874 return IPR_RC_JOB_CONTINUE;
5875 }
5876
5877 return ipr_reset_cmd_failed(ipr_cmd);
5878}
5879
5880/**
5881 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5882 * @ipr_cmd: ipr command struct
5883 *
5884 * This function send a mode sense to the IOA to retrieve
5885 * the IOA Advanced Function Control mode page.
5886 *
5887 * Return value:
5888 * IPR_RC_JOB_RETURN
5889 **/
5890static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5891{
5892 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5893
5894 ENTER;
5895 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5896 0x24, ioa_cfg->vpd_cbs_dma +
5897 offsetof(struct ipr_misc_cbs, mode_pages),
5898 sizeof(struct ipr_mode_pages));
5899
5900 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5901 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5902
5903 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5904
5905 LEAVE;
5906 return IPR_RC_JOB_RETURN;
5907}
5908
1da177e4
LT		 5909/**
5910 * ipr_init_res_table - Initialize the resource table
5911 * @ipr_cmd: ipr command struct
5912 *
5913 * This function looks through the existing resource table, comparing
5914 * it with the config table. This function will take care of old/new
5915 * devices and schedule adding/removing them from the mid-layer
5916 * as appropriate.
5917 *
5918 * Return value:
5919 * IPR_RC_JOB_CONTINUE
5920 **/
5921static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5922{
5923 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5924 struct ipr_resource_entry *res, *temp;
5925 struct ipr_config_table_entry *cfgte;
5926 int found, i;
5927 LIST_HEAD(old_res);
5928
5929 ENTER;
5930 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5931 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5932
5933 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5934 list_move_tail(&res->queue, &old_res);
5935
5936 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5937 cfgte = &ioa_cfg->cfg_table->dev[i];
5938 found = 0;
5939
5940 list_for_each_entry_safe(res, temp, &old_res, queue) {
5941 if (!memcmp(&res->cfgte.res_addr,
5942 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5943 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5944 found = 1;
5945 break;
5946 }
5947 }
5948
5949 if (!found) {
5950 if (list_empty(&ioa_cfg->free_res_q)) {
5951 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5952 break;
5953 }
5954
5955 found = 1;
5956 res = list_entry(ioa_cfg->free_res_q.next,
5957 struct ipr_resource_entry, queue);
5958 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5959 ipr_init_res_entry(res);
5960 res->add_to_ml = 1;
5961 }
5962
5963 if (found)
5964 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5965 }
5966
5967 list_for_each_entry_safe(res, temp, &old_res, queue) {
5968 if (res->sdev) {
5969 res->del_from_ml = 1;
1121b794 5970 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5971 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5972 } else {
5973 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5974 }
5975 }
5976
ac09c349
BK		 5977 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5978 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5979 else
5980 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5981
5982 LEAVE;
5983 return IPR_RC_JOB_CONTINUE;
5984}
5985
5986/**
5987 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5988 * @ipr_cmd: ipr command struct
5989 *
5990 * This function sends a Query IOA Configuration command
5991 * to the adapter to retrieve the IOA configuration table.
5992 *
5993 * Return value:
5994 * IPR_RC_JOB_RETURN
5995 **/
5996static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5997{
5998 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5999 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6000 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6001 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6002 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6003
6004 ENTER;
ac09c349
BK		 6005 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6006 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6007 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6008 ucode_vpd->major_release, ucode_vpd->card_type,
6009 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6010 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6011 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6012
6013 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6014 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6015 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6016
6017 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6018 ioarcb->read_data_transfer_length =
6019 cpu_to_be32(sizeof(struct ipr_config_table));
6020
6021 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6022 ioadl->flags_and_data_len =
6023 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6024
6025 ipr_cmd->job_step = ipr_init_res_table;
6026
6027 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6028
6029 LEAVE;
6030 return IPR_RC_JOB_RETURN;
6031}
6032
6033/**
6034 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6035 * @ipr_cmd: ipr command struct
6036 *
6037 * This utility function sends an inquiry to the adapter.
6038 *
6039 * Return value:
6040 * none
6041 **/
6042static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6043 u32 dma_addr, u8 xfer_len)
6044{
6045 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6046 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6047
6048 ENTER;
6049 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6050 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6051
6052 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6053 ioarcb->cmd_pkt.cdb[1] = flags;
6054 ioarcb->cmd_pkt.cdb[2] = page;
6055 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6056
6057 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6058 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6059
6060 ioadl->address = cpu_to_be32(dma_addr);
6061 ioadl->flags_and_data_len =
6062 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6063
6064 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6065 LEAVE;
6066}
6067
62275040
BK		 6068/**
6069 * ipr_inquiry_page_supported - Is the given inquiry page supported
6070 * @page0: inquiry page 0 buffer
6071 * @page: page code.
6072 *
6073 * This function determines if the specified inquiry page is supported.
6074 *
6075 * Return value:
6076 * 1 if page is supported / 0 if not
6077 **/
6078static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6079{
6080 int i;
6081
6082 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6083 if (page0->page[i] == page)
6084 return 1;
6085
6086 return 0;
6087}
6088
ac09c349
BK		 6089/**
6090 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6091 * @ipr_cmd: ipr command struct
6092 *
6093 * This function sends a Page 0xD0 inquiry to the adapter
6094 * to retrieve adapter capabilities.
6095 *
6096 * Return value:
6097 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6098 **/
6099static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6100{
6101 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6102 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6103 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6104
6105 ENTER;
6106 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6107 memset(cap, 0, sizeof(*cap));
6108
6109 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6110 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6111 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6112 sizeof(struct ipr_inquiry_cap));
6113 return IPR_RC_JOB_RETURN;
6114 }
6115
6116 LEAVE;
6117 return IPR_RC_JOB_CONTINUE;
6118}
6119
1da177e4
LT		 6120/**
6121 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6122 * @ipr_cmd: ipr command struct
6123 *
6124 * This function sends a Page 3 inquiry to the adapter
6125 * to retrieve software VPD information.
6126 *
6127 * Return value:
6128 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6129 **/
6130static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6131{
6132 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6133 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6134
6135 ENTER;
6136
6137 if (!ipr_inquiry_page_supported(page0, 1))
6138 ioa_cfg->cache_state = CACHE_NONE;
6139
ac09c349 6140 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6141
6142 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6143 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6144 sizeof(struct ipr_inquiry_page3));
6145
6146 LEAVE;
6147 return IPR_RC_JOB_RETURN;
6148}
6149
6150/**
6151 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6152 * @ipr_cmd: ipr command struct
6153 *
6154 * This function sends a Page 0 inquiry to the adapter
6155 * to retrieve supported inquiry pages.
6156 *
6157 * Return value:
6158 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6159 **/
6160static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6161{
6162 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6163 char type[5];
6164
6165 ENTER;
6166
6167 /* Grab the type out of the VPD and store it away */
6168 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6169 type[4] = '\0';
6170 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6171
62275040 6172 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6173
62275040
BK		 6174 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6175 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6176 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6177
6178 LEAVE;
6179 return IPR_RC_JOB_RETURN;
6180}
6181
6182/**
6183 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6184 * @ipr_cmd: ipr command struct
6185 *
6186 * This function sends a standard inquiry to the adapter.
6187 *
6188 * Return value:
6189 * IPR_RC_JOB_RETURN
6190 **/
6191static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6192{
6193 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6194
6195 ENTER;
62275040 6196 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6197
6198 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6199 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6200 sizeof(struct ipr_ioa_vpd));
6201
6202 LEAVE;
6203 return IPR_RC_JOB_RETURN;
6204}
6205
6206/**
6207 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6208 * @ipr_cmd: ipr command struct
6209 *
6210 * This function send an Identify Host Request Response Queue
6211 * command to establish the HRRQ with the adapter.
6212 *
6213 * Return value:
6214 * IPR_RC_JOB_RETURN
6215 **/
6216static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6217{
6218 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6219 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6220
6221 ENTER;
6222 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6223
6224 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6225 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6226
6227 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6228 ioarcb->cmd_pkt.cdb[2] =
6229 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6230 ioarcb->cmd_pkt.cdb[3] =
6231 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6232 ioarcb->cmd_pkt.cdb[4] =
6233 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6234 ioarcb->cmd_pkt.cdb[5] =
6235 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6236 ioarcb->cmd_pkt.cdb[7] =
6237 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6238 ioarcb->cmd_pkt.cdb[8] =
6239 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6240
6241 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6242
6243 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6244
6245 LEAVE;
6246 return IPR_RC_JOB_RETURN;
6247}
6248
6249/**
6250 * ipr_reset_timer_done - Adapter reset timer function
6251 * @ipr_cmd: ipr command struct
6252 *
6253 * Description: This function is used in adapter reset processing
6254 * for timing events. If the reset_cmd pointer in the IOA
6255 * config struct is not this adapter's we are doing nested
6256 * resets and fail_all_ops will take care of freeing the
6257 * command block.
6258 *
6259 * Return value:
6260 * none
6261 **/
6262static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6263{
6264 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6265 unsigned long lock_flags = 0;
6266
6267 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6268
6269 if (ioa_cfg->reset_cmd == ipr_cmd) {
6270 list_del(&ipr_cmd->queue);
6271 ipr_cmd->done(ipr_cmd);
6272 }
6273
6274 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6275}
6276
6277/**
6278 * ipr_reset_start_timer - Start a timer for adapter reset job
6279 * @ipr_cmd: ipr command struct
6280 * @timeout: timeout value
6281 *
6282 * Description: This function is used in adapter reset processing
6283 * for timing events. If the reset_cmd pointer in the IOA
6284 * config struct is not this adapter's we are doing nested
6285 * resets and fail_all_ops will take care of freeing the
6286 * command block.
6287 *
6288 * Return value:
6289 * none
6290 **/
6291static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6292 unsigned long timeout)
6293{
6294 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6295 ipr_cmd->done = ipr_reset_ioa_job;
6296
6297 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6298 ipr_cmd->timer.expires = jiffies + timeout;
6299 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6300 add_timer(&ipr_cmd->timer);
6301}
6302
6303/**
6304 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6305 * @ioa_cfg: ioa cfg struct
6306 *
6307 * Return value:
6308 * nothing
6309 **/
6310static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6311{
6312 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6313
6314 /* Initialize Host RRQ pointers */
6315 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6316 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6317 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6318 ioa_cfg->toggle_bit = 1;
6319
6320 /* Zero out config table */
6321 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6322}
6323
6324/**
6325 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6326 * @ipr_cmd: ipr command struct
6327 *
6328 * This function reinitializes some control blocks and
6329 * enables destructive diagnostics on the adapter.
6330 *
6331 * Return value:
6332 * IPR_RC_JOB_RETURN
6333 **/
6334static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6335{
6336 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6337 volatile u32 int_reg;
6338
6339 ENTER;
6340 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6341 ipr_init_ioa_mem(ioa_cfg);
6342
6343 ioa_cfg->allow_interrupts = 1;
6344 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6345
6346 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6347 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6348 ioa_cfg->regs.clr_interrupt_mask_reg);
6349 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6350 return IPR_RC_JOB_CONTINUE;
6351 }
6352
6353 /* Enable destructive diagnostics on IOA */
3d1d0da6 6354 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6355
6356 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6357 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6358
6359 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6360
6361 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6362 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6363 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6364 ipr_cmd->done = ipr_reset_ioa_job;
6365 add_timer(&ipr_cmd->timer);
6366 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6367
6368 LEAVE;
6369 return IPR_RC_JOB_RETURN;
6370}
6371
6372/**
6373 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6374 * @ipr_cmd: ipr command struct
6375 *
6376 * This function is invoked when an adapter dump has run out
6377 * of processing time.
6378 *
6379 * Return value:
6380 * IPR_RC_JOB_CONTINUE
6381 **/
6382static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6383{
6384 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6385
6386 if (ioa_cfg->sdt_state == GET_DUMP)
6387 ioa_cfg->sdt_state = ABORT_DUMP;
6388
6389 ipr_cmd->job_step = ipr_reset_alert;
6390
6391 return IPR_RC_JOB_CONTINUE;
6392}
6393
6394/**
6395 * ipr_unit_check_no_data - Log a unit check/no data error log
6396 * @ioa_cfg: ioa config struct
6397 *
6398 * Logs an error indicating the adapter unit checked, but for some
6399 * reason, we were unable to fetch the unit check buffer.
6400 *
6401 * Return value:
6402 * nothing
6403 **/
6404static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6405{
6406 ioa_cfg->errors_logged++;
6407 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6408}
6409
6410/**
6411 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6412 * @ioa_cfg: ioa config struct
6413 *
6414 * Fetches the unit check buffer from the adapter by clocking the data
6415 * through the mailbox register.
6416 *
6417 * Return value:
6418 * nothing
6419 **/
6420static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6421{
6422 unsigned long mailbox;
6423 struct ipr_hostrcb *hostrcb;
6424 struct ipr_uc_sdt sdt;
6425 int rc, length;
65f56475 6426 u32 ioasc;
1da177e4
LT		 6427
6428 mailbox = readl(ioa_cfg->ioa_mailbox);
6429
6430 if (!ipr_sdt_is_fmt2(mailbox)) {
6431 ipr_unit_check_no_data(ioa_cfg);
6432 return;
6433 }
6434
6435 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6436 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6437 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6438
6439 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6440 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6441 ipr_unit_check_no_data(ioa_cfg);
6442 return;
6443 }
6444
6445 /* Find length of the first sdt entry (UC buffer) */
6446 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6447 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6448
6449 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6450 struct ipr_hostrcb, queue);
6451 list_del(&hostrcb->queue);
6452 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6453
6454 rc = ipr_get_ldump_data_section(ioa_cfg,
6455 be32_to_cpu(sdt.entry[0].bar_str_offset),
6456 (__be32 *)&hostrcb->hcam,
6457 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6458
65f56475 6459 if (!rc) {
1da177e4 6460 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6461 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6462 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6463 ioa_cfg->sdt_state == GET_DUMP)
6464 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6465 } else
1da177e4
LT		 6466 ipr_unit_check_no_data(ioa_cfg);
6467
6468 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6469}
6470
6471/**
6472 * ipr_reset_restore_cfg_space - Restore PCI config space.
6473 * @ipr_cmd: ipr command struct
6474 *
6475 * Description: This function restores the saved PCI config space of
6476 * the adapter, fails all outstanding ops back to the callers, and
6477 * fetches the dump/unit check if applicable to this reset.
6478 *
6479 * Return value:
6480 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6481 **/
6482static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6483{
6484 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6485 int rc;
6486
6487 ENTER;
6488 rc = pci_restore_state(ioa_cfg->pdev);
6489
6490 if (rc != PCIBIOS_SUCCESSFUL) {
6491 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6492 return IPR_RC_JOB_CONTINUE;
6493 }
6494
6495 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6496 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6497 return IPR_RC_JOB_CONTINUE;
6498 }
6499
6500 ipr_fail_all_ops(ioa_cfg);
6501
6502 if (ioa_cfg->ioa_unit_checked) {
6503 ioa_cfg->ioa_unit_checked = 0;
6504 ipr_get_unit_check_buffer(ioa_cfg);
6505 ipr_cmd->job_step = ipr_reset_alert;
6506 ipr_reset_start_timer(ipr_cmd, 0);
6507 return IPR_RC_JOB_RETURN;
6508 }
6509
6510 if (ioa_cfg->in_ioa_bringdown) {
6511 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6512 } else {
6513 ipr_cmd->job_step = ipr_reset_enable_ioa;
6514
6515 if (GET_DUMP == ioa_cfg->sdt_state) {
6516 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6517 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6518 schedule_work(&ioa_cfg->work_q);
6519 return IPR_RC_JOB_RETURN;
6520 }
6521 }
6522
6523 ENTER;
6524 return IPR_RC_JOB_CONTINUE;
6525}
6526
e619e1a7
BK		 6527/**
6528 * ipr_reset_bist_done - BIST has completed on the adapter.
6529 * @ipr_cmd: ipr command struct
6530 *
6531 * Description: Unblock config space and resume the reset process.
6532 *
6533 * Return value:
6534 * IPR_RC_JOB_CONTINUE
6535 **/
6536static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6537{
6538 ENTER;
6539 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6540 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6541 LEAVE;
6542 return IPR_RC_JOB_CONTINUE;
6543}
6544
1da177e4
LT		 6545/**
6546 * ipr_reset_start_bist - Run BIST on the adapter.
6547 * @ipr_cmd: ipr command struct
6548 *
6549 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6550 *
6551 * Return value:
6552 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6553 **/
6554static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6555{
6556 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6557 int rc;
6558
6559 ENTER;
b30197d2 6560 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6561 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6562
6563 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6564 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6565 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6566 rc = IPR_RC_JOB_CONTINUE;
6567 } else {
e619e1a7 6568 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6569 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6570 rc = IPR_RC_JOB_RETURN;
6571 }
6572
6573 LEAVE;
6574 return rc;
6575}
6576
463fc696
BK		 6577/**
6578 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6579 * @ipr_cmd: ipr command struct
6580 *
6581 * Description: This clears PCI reset to the adapter and delays two seconds.
6582 *
6583 * Return value:
6584 * IPR_RC_JOB_RETURN
6585 **/
6586static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6587{
6588 ENTER;
6589 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6590 ipr_cmd->job_step = ipr_reset_bist_done;
6591 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6592 LEAVE;
6593 return IPR_RC_JOB_RETURN;
6594}
6595
6596/**
6597 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6598 * @ipr_cmd: ipr command struct
6599 *
6600 * Description: This asserts PCI reset to the adapter.
6601 *
6602 * Return value:
6603 * IPR_RC_JOB_RETURN
6604 **/
6605static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6606{
6607 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6608 struct pci_dev *pdev = ioa_cfg->pdev;
6609
6610 ENTER;
6611 pci_block_user_cfg_access(pdev);
6612 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6613 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6614 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6615 LEAVE;
6616 return IPR_RC_JOB_RETURN;
6617}
6618
1da177e4
LT		 6619/**
6620 * ipr_reset_allowed - Query whether or not IOA can be reset
6621 * @ioa_cfg: ioa config struct
6622 *
6623 * Return value:
6624 * 0 if reset not allowed / non-zero if reset is allowed
6625 **/
6626static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6627{
6628 volatile u32 temp_reg;
6629
6630 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6631 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6632}
6633
6634/**
6635 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6636 * @ipr_cmd: ipr command struct
6637 *
6638 * Description: This function waits for adapter permission to run BIST,
6639 * then runs BIST. If the adapter does not give permission after a
6640 * reasonable time, we will reset the adapter anyway. The impact of
6641 * resetting the adapter without warning the adapter is the risk of
6642 * losing the persistent error log on the adapter. If the adapter is
6643 * reset while it is writing to the flash on the adapter, the flash
6644 * segment will have bad ECC and be zeroed.
6645 *
6646 * Return value:
6647 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6648 **/
6649static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6650{
6651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6652 int rc = IPR_RC_JOB_RETURN;
6653
6654 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6655 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6656 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6657 } else {
463fc696 6658 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6659 rc = IPR_RC_JOB_CONTINUE;
6660 }
6661
6662 return rc;
6663}
6664
6665/**
6666 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6667 * @ipr_cmd: ipr command struct
6668 *
6669 * Description: This function alerts the adapter that it will be reset.
6670 * If memory space is not currently enabled, proceed directly
6671 * to running BIST on the adapter. The timer must always be started
6672 * so we guarantee we do not run BIST from ipr_isr.
6673 *
6674 * Return value:
6675 * IPR_RC_JOB_RETURN
6676 **/
6677static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6678{
6679 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6680 u16 cmd_reg;
6681 int rc;
6682
6683 ENTER;
6684 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6685
6686 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6687 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6688 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6689 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6690 } else {
463fc696 6691 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6692 }
6693
6694 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6695 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6696
6697 LEAVE;
6698 return IPR_RC_JOB_RETURN;
6699}
6700
6701/**
6702 * ipr_reset_ucode_download_done - Microcode download completion
6703 * @ipr_cmd: ipr command struct
6704 *
6705 * Description: This function unmaps the microcode download buffer.
6706 *
6707 * Return value:
6708 * IPR_RC_JOB_CONTINUE
6709 **/
6710static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6711{
6712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6713 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6714
6715 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6716 sglist->num_sg, DMA_TO_DEVICE);
6717
6718 ipr_cmd->job_step = ipr_reset_alert;
6719 return IPR_RC_JOB_CONTINUE;
6720}
6721
6722/**
6723 * ipr_reset_ucode_download - Download microcode to the adapter
6724 * @ipr_cmd: ipr command struct
6725 *
6726 * Description: This function checks to see if it there is microcode
6727 * to download to the adapter. If there is, a download is performed.
6728 *
6729 * Return value:
6730 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6731 **/
6732static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6733{
6734 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6735 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6736
6737 ENTER;
6738 ipr_cmd->job_step = ipr_reset_alert;
6739
6740 if (!sglist)
6741 return IPR_RC_JOB_CONTINUE;
6742
6743 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6744 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6745 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6746 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6747 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6748 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6749 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6750
12baa420 6751 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6752 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6753
6754 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6755 IPR_WRITE_BUFFER_TIMEOUT);
6756
6757 LEAVE;
6758 return IPR_RC_JOB_RETURN;
6759}
6760
6761/**
6762 * ipr_reset_shutdown_ioa - Shutdown the adapter
6763 * @ipr_cmd: ipr command struct
6764 *
6765 * Description: This function issues an adapter shutdown of the
6766 * specified type to the specified adapter as part of the
6767 * adapter reset job.
6768 *
6769 * Return value:
6770 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6771 **/
6772static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6773{
6774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6775 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6776 unsigned long timeout;
6777 int rc = IPR_RC_JOB_CONTINUE;
6778
6779 ENTER;
6780 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6781 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6782 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6783 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6784 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6785
ac09c349
BK		 6786 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6787 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6788 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6789 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6790 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6791 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6792 else
ac09c349 6793 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6794
6795 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6796
6797 rc = IPR_RC_JOB_RETURN;
6798 ipr_cmd->job_step = ipr_reset_ucode_download;
6799 } else
6800 ipr_cmd->job_step = ipr_reset_alert;
6801
6802 LEAVE;
6803 return rc;
6804}
6805
6806/**
6807 * ipr_reset_ioa_job - Adapter reset job
6808 * @ipr_cmd: ipr command struct
6809 *
6810 * Description: This function is the job router for the adapter reset job.
6811 *
6812 * Return value:
6813 * none
6814 **/
6815static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6816{
6817 u32 rc, ioasc;
1da177e4
LT		 6818 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6819
6820 do {
6821 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6822
6823 if (ioa_cfg->reset_cmd != ipr_cmd) {
6824 /*
6825 * We are doing nested adapter resets and this is
6826 * not the current reset job.
6827 */
6828 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6829 return;
6830 }
6831
6832 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6833 rc = ipr_cmd->job_step_failed(ipr_cmd);
6834 if (rc == IPR_RC_JOB_RETURN)
6835 return;
1da177e4
LT		 6836 }
6837
6838 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6839 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6840 rc = ipr_cmd->job_step(ipr_cmd);
6841 } while(rc == IPR_RC_JOB_CONTINUE);
6842}
6843
6844/**
6845 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6846 * @ioa_cfg: ioa config struct
6847 * @job_step: first job step of reset job
6848 * @shutdown_type: shutdown type
6849 *
6850 * Description: This function will initiate the reset of the given adapter
6851 * starting at the selected job step.
6852 * If the caller needs to wait on the completion of the reset,
6853 * the caller must sleep on the reset_wait_q.
6854 *
6855 * Return value:
6856 * none
6857 **/
6858static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6859 int (*job_step) (struct ipr_cmnd *),
6860 enum ipr_shutdown_type shutdown_type)
6861{
6862 struct ipr_cmnd *ipr_cmd;
6863
6864 ioa_cfg->in_reset_reload = 1;
6865 ioa_cfg->allow_cmds = 0;
6866 scsi_block_requests(ioa_cfg->host);
6867
6868 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6869 ioa_cfg->reset_cmd = ipr_cmd;
6870 ipr_cmd->job_step = job_step;
6871 ipr_cmd->u.shutdown_type = shutdown_type;
6872
6873 ipr_reset_ioa_job(ipr_cmd);
6874}
6875
6876/**
6877 * ipr_initiate_ioa_reset - Initiate an adapter reset
6878 * @ioa_cfg: ioa config struct
6879 * @shutdown_type: shutdown type
6880 *
6881 * Description: This function will initiate the reset of the given adapter.
6882 * If the caller needs to wait on the completion of the reset,
6883 * the caller must sleep on the reset_wait_q.
6884 *
6885 * Return value:
6886 * none
6887 **/
6888static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6889 enum ipr_shutdown_type shutdown_type)
6890{
6891 if (ioa_cfg->ioa_is_dead)
6892 return;
6893
6894 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6895 ioa_cfg->sdt_state = ABORT_DUMP;
6896
6897 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6898 dev_err(&ioa_cfg->pdev->dev,
6899 "IOA taken offline - error recovery failed\n");
6900
6901 ioa_cfg->reset_retries = 0;
6902 ioa_cfg->ioa_is_dead = 1;
6903
6904 if (ioa_cfg->in_ioa_bringdown) {
6905 ioa_cfg->reset_cmd = NULL;
6906 ioa_cfg->in_reset_reload = 0;
6907 ipr_fail_all_ops(ioa_cfg);
6908 wake_up_all(&ioa_cfg->reset_wait_q);
6909
6910 spin_unlock_irq(ioa_cfg->host->host_lock);
6911 scsi_unblock_requests(ioa_cfg->host);
6912 spin_lock_irq(ioa_cfg->host->host_lock);
6913 return;
6914 } else {
6915 ioa_cfg->in_ioa_bringdown = 1;
6916 shutdown_type = IPR_SHUTDOWN_NONE;
6917 }
6918 }
6919
6920 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6921 shutdown_type);
6922}
6923
f8a88b19
LV		 6924/**
6925 * ipr_reset_freeze - Hold off all I/O activity
6926 * @ipr_cmd: ipr command struct
6927 *
6928 * Description: If the PCI slot is frozen, hold off all I/O
6929 * activity; then, as soon as the slot is available again,
6930 * initiate an adapter reset.
6931 */
6932static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6933{
6934 /* Disallow new interrupts, avoid loop */
6935 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6936 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6937 ipr_cmd->done = ipr_reset_ioa_job;
6938 return IPR_RC_JOB_RETURN;
6939}
6940
6941/**
6942 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6943 * @pdev: PCI device struct
6944 *
6945 * Description: This routine is called to tell us that the PCI bus
6946 * is down. Can't do anything here, except put the device driver
6947 * into a holding pattern, waiting for the PCI bus to come back.
6948 */
6949static void ipr_pci_frozen(struct pci_dev *pdev)
6950{
6951 unsigned long flags = 0;
6952 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6953
6954 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6955 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6956 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6957}
6958
6959/**
6960 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6961 * @pdev: PCI device struct
6962 *
6963 * Description: This routine is called by the pci error recovery
6964 * code after the PCI slot has been reset, just before we
6965 * should resume normal operations.
6966 */
6967static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6968{
6969 unsigned long flags = 0;
6970 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6971
6972 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6973 if (ioa_cfg->needs_warm_reset)
6974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6975 else
6976 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6977 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6979 return PCI_ERS_RESULT_RECOVERED;
6980}
6981
6982/**
6983 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6984 * @pdev: PCI device struct
6985 *
6986 * Description: This routine is called when the PCI bus has
6987 * permanently failed.
6988 */
6989static void ipr_pci_perm_failure(struct pci_dev *pdev)
6990{
6991 unsigned long flags = 0;
6992 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6993
6994 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6995 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6996 ioa_cfg->sdt_state = ABORT_DUMP;
6997 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6998 ioa_cfg->in_ioa_bringdown = 1;
6999 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7000 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7001}
7002
7003/**
7004 * ipr_pci_error_detected - Called when a PCI error is detected.
7005 * @pdev: PCI device struct
7006 * @state: PCI channel state
7007 *
7008 * Description: Called when a PCI error is detected.
7009 *
7010 * Return value:
7011 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7012 */
7013static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7014 pci_channel_state_t state)
7015{
7016 switch (state) {
7017 case pci_channel_io_frozen:
7018 ipr_pci_frozen(pdev);
7019 return PCI_ERS_RESULT_NEED_RESET;
7020 case pci_channel_io_perm_failure:
7021 ipr_pci_perm_failure(pdev);
7022 return PCI_ERS_RESULT_DISCONNECT;
7023 break;
7024 default:
7025 break;
7026 }
7027 return PCI_ERS_RESULT_NEED_RESET;
7028}
7029
1da177e4
LT		 7030/**
7031 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7032 * @ioa_cfg: ioa cfg struct
7033 *
7034 * Description: This is the second phase of adapter intialization
7035 * This function takes care of initilizing the adapter to the point
7036 * where it can accept new commands.
7037
7038 * Return value:
b1c11812 7039 * 0 on success / -EIO on failure
1da177e4
LT		 7040 **/
7041static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7042{
7043 int rc = 0;
7044 unsigned long host_lock_flags = 0;
7045
7046 ENTER;
7047 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7048 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7049 if (ioa_cfg->needs_hard_reset) {
7050 ioa_cfg->needs_hard_reset = 0;
7051 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7052 } else
7053 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7054 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7055
7056 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7057 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7058 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7059
7060 if (ioa_cfg->ioa_is_dead) {
7061 rc = -EIO;
7062 } else if (ipr_invalid_adapter(ioa_cfg)) {
7063 if (!ipr_testmode)
7064 rc = -EIO;
7065
7066 dev_err(&ioa_cfg->pdev->dev,
7067 "Adapter not supported in this hardware configuration.\n");
7068 }
7069
7070 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7071
7072 LEAVE;
7073 return rc;
7074}
7075
7076/**
7077 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7078 * @ioa_cfg: ioa config struct
7079 *
7080 * Return value:
7081 * none
7082 **/
7083static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7084{
7085 int i;
7086
7087 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7088 if (ioa_cfg->ipr_cmnd_list[i])
7089 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7090 ioa_cfg->ipr_cmnd_list[i],
7091 ioa_cfg->ipr_cmnd_list_dma[i]);
7092
7093 ioa_cfg->ipr_cmnd_list[i] = NULL;
7094 }
7095
7096 if (ioa_cfg->ipr_cmd_pool)
7097 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7098
7099 ioa_cfg->ipr_cmd_pool = NULL;
7100}
7101
7102/**
7103 * ipr_free_mem - Frees memory allocated for an adapter
7104 * @ioa_cfg: ioa cfg struct
7105 *
7106 * Return value:
7107 * nothing
7108 **/
7109static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7110{
7111 int i;
7112
7113 kfree(ioa_cfg->res_entries);
7114 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7115 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7116 ipr_free_cmd_blks(ioa_cfg);
7117 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7118 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7119 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7120 ioa_cfg->cfg_table,
7121 ioa_cfg->cfg_table_dma);
7122
7123 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7124 pci_free_consistent(ioa_cfg->pdev,
7125 sizeof(struct ipr_hostrcb),
7126 ioa_cfg->hostrcb[i],
7127 ioa_cfg->hostrcb_dma[i]);
7128 }
7129
7130 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7131 kfree(ioa_cfg->trace);
7132}
7133
7134/**
7135 * ipr_free_all_resources - Free all allocated resources for an adapter.
7136 * @ipr_cmd: ipr command struct
7137 *
7138 * This function frees all allocated resources for the
7139 * specified adapter.
7140 *
7141 * Return value:
7142 * none
7143 **/
7144static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7145{
7146 struct pci_dev *pdev = ioa_cfg->pdev;
7147
7148 ENTER;
7149 free_irq(pdev->irq, ioa_cfg);
7150 iounmap(ioa_cfg->hdw_dma_regs);
7151 pci_release_regions(pdev);
7152 ipr_free_mem(ioa_cfg);
7153 scsi_host_put(ioa_cfg->host);
7154 pci_disable_device(pdev);
7155 LEAVE;
7156}
7157
7158/**
7159 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7160 * @ioa_cfg: ioa config struct
7161 *
7162 * Return value:
7163 * 0 on success / -ENOMEM on allocation failure
7164 **/
7165static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7166{
7167 struct ipr_cmnd *ipr_cmd;
7168 struct ipr_ioarcb *ioarcb;
7169 dma_addr_t dma_addr;
7170 int i;
7171
7172 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7173 sizeof(struct ipr_cmnd), 8, 0);
7174
7175 if (!ioa_cfg->ipr_cmd_pool)
7176 return -ENOMEM;
7177
7178 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7179 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7180
7181 if (!ipr_cmd) {
7182 ipr_free_cmd_blks(ioa_cfg);
7183 return -ENOMEM;
7184 }
7185
7186 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7187 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7188 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7189
7190 ioarcb = &ipr_cmd->ioarcb;
7191 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7192 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7193 ioarcb->write_ioadl_addr =
7194 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7195 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7196 ioarcb->ioasa_host_pci_addr =
7197 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7198 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7199 ipr_cmd->cmd_index = i;
7200 ipr_cmd->ioa_cfg = ioa_cfg;
7201 ipr_cmd->sense_buffer_dma = dma_addr +
7202 offsetof(struct ipr_cmnd, sense_buffer);
7203
7204 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7205 }
7206
7207 return 0;
7208}
7209
7210/**
7211 * ipr_alloc_mem - Allocate memory for an adapter
7212 * @ioa_cfg: ioa config struct
7213 *
7214 * Return value:
7215 * 0 on success / non-zero for error
7216 **/
7217static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7218{
7219 struct pci_dev *pdev = ioa_cfg->pdev;
7220 int i, rc = -ENOMEM;
7221
7222 ENTER;
0bc42e35 7223 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7224 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7225
7226 if (!ioa_cfg->res_entries)
7227 goto out;
7228
1da177e4
LT		 7229 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7230 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7231
7232 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7233 sizeof(struct ipr_misc_cbs),
7234 &ioa_cfg->vpd_cbs_dma);
7235
7236 if (!ioa_cfg->vpd_cbs)
7237 goto out_free_res_entries;
7238
7239 if (ipr_alloc_cmd_blks(ioa_cfg))
7240 goto out_free_vpd_cbs;
7241
7242 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7243 sizeof(u32) * IPR_NUM_CMD_BLKS,
7244 &ioa_cfg->host_rrq_dma);
7245
7246 if (!ioa_cfg->host_rrq)
7247 goto out_ipr_free_cmd_blocks;
7248
7249 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7250 sizeof(struct ipr_config_table),
7251 &ioa_cfg->cfg_table_dma);
7252
7253 if (!ioa_cfg->cfg_table)
7254 goto out_free_host_rrq;
7255
7256 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7257 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7258 sizeof(struct ipr_hostrcb),
7259 &ioa_cfg->hostrcb_dma[i]);
7260
7261 if (!ioa_cfg->hostrcb[i])
7262 goto out_free_hostrcb_dma;
7263
7264 ioa_cfg->hostrcb[i]->hostrcb_dma =
7265 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7266 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7267 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7268 }
7269
0bc42e35 7270 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7271 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7272
7273 if (!ioa_cfg->trace)
7274 goto out_free_hostrcb_dma;
7275
1da177e4
LT		 7276 rc = 0;
7277out:
7278 LEAVE;
7279 return rc;
7280
7281out_free_hostrcb_dma:
7282 while (i-- > 0) {
7283 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7284 ioa_cfg->hostrcb[i],
7285 ioa_cfg->hostrcb_dma[i]);
7286 }
7287 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7288 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7289out_free_host_rrq:
7290 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7291 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7292out_ipr_free_cmd_blocks:
7293 ipr_free_cmd_blks(ioa_cfg);
7294out_free_vpd_cbs:
7295 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7296 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7297out_free_res_entries:
7298 kfree(ioa_cfg->res_entries);
7299 goto out;
7300}
7301
7302/**
7303 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7304 * @ioa_cfg: ioa config struct
7305 *
7306 * Return value:
7307 * none
7308 **/
7309static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7310{
7311 int i;
7312
7313 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7314 ioa_cfg->bus_attr[i].bus = i;
7315 ioa_cfg->bus_attr[i].qas_enabled = 0;
7316 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7317 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7318 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7319 else
7320 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7321 }
7322}
7323
7324/**
7325 * ipr_init_ioa_cfg - Initialize IOA config struct
7326 * @ioa_cfg: ioa config struct
7327 * @host: scsi host struct
7328 * @pdev: PCI dev struct
7329 *
7330 * Return value:
7331 * none
7332 **/
7333static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7334 struct Scsi_Host *host, struct pci_dev *pdev)
7335{
7336 const struct ipr_interrupt_offsets *p;
7337 struct ipr_interrupts *t;
7338 void __iomem *base;
7339
7340 ioa_cfg->host = host;
7341 ioa_cfg->pdev = pdev;
7342 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7343 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7344 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7345 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7346 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7347 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7348 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7349 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7350 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7351 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7352
7353 INIT_LIST_HEAD(&ioa_cfg->free_q);
7354 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7355 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7356 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7357 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7358 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7359 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7360 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7361 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7362 if (ipr_enable_cache)
7363 ioa_cfg->cache_state = CACHE_ENABLED;
7364 else
7365 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7366
7367 ipr_initialize_bus_attr(ioa_cfg);
7368
7369 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7370 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7371 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7372 host->unique_id = host->host_no;
7373 host->max_cmd_len = IPR_MAX_CDB_LEN;
7374 pci_set_drvdata(pdev, ioa_cfg);
7375
7376 p = &ioa_cfg->chip_cfg->regs;
7377 t = &ioa_cfg->regs;
7378 base = ioa_cfg->hdw_dma_regs;
7379
7380 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7381 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7382 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7383 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7384 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7385 t->ioarrin_reg = base + p->ioarrin_reg;
7386 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7387 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7388 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7389}
7390
7391/**
7392 * ipr_get_chip_cfg - Find adapter chip configuration
7393 * @dev_id: PCI device id struct
7394 *
7395 * Return value:
7396 * ptr to chip config on success / NULL on failure
7397 **/
7398static const struct ipr_chip_cfg_t * __devinit
7399ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7400{
7401 int i;
7402
1da177e4
LT		 7403 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7404 if (ipr_chip[i].vendor == dev_id->vendor &&
7405 ipr_chip[i].device == dev_id->device)
7406 return ipr_chip[i].cfg;
7407 return NULL;
7408}
7409
7410/**
7411 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7412 * @pdev: PCI device struct
7413 * @dev_id: PCI device id struct
7414 *
7415 * Return value:
7416 * 0 on success / non-zero on failure
7417 **/
7418static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7419 const struct pci_device_id *dev_id)
7420{
7421 struct ipr_ioa_cfg *ioa_cfg;
7422 struct Scsi_Host *host;
7423 unsigned long ipr_regs_pci;
7424 void __iomem *ipr_regs;
a2a65a3e 7425 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7426 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7427
7428 ENTER;
7429
7430 if ((rc = pci_enable_device(pdev))) {
7431 dev_err(&pdev->dev, "Cannot enable adapter\n");
7432 goto out;
7433 }
7434
7435 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7436
7437 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7438
7439 if (!host) {
7440 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7441 rc = -ENOMEM;
7442 goto out_disable;
7443 }
7444
7445 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7446 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7447 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7448 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7449
7450 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7451
7452 if (!ioa_cfg->chip_cfg) {
7453 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7454 dev_id->vendor, dev_id->device);
7455 goto out_scsi_host_put;
7456 }
7457
5469cb5b
BK		 7458 if (ipr_transop_timeout)
7459 ioa_cfg->transop_timeout = ipr_transop_timeout;
7460 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7461 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7462 else
7463 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7464
44c10138 7465 ioa_cfg->revid = pdev->revision;
463fc696 7466
1da177e4
LT		 7467 ipr_regs_pci = pci_resource_start(pdev, 0);
7468
7469 rc = pci_request_regions(pdev, IPR_NAME);
7470 if (rc < 0) {
7471 dev_err(&pdev->dev,
7472 "Couldn't register memory range of registers\n");
7473 goto out_scsi_host_put;
7474 }
7475
25729a7f 7476 ipr_regs = pci_ioremap_bar(pdev, 0);
1da177e4
LT		 7477
7478 if (!ipr_regs) {
7479 dev_err(&pdev->dev,
7480 "Couldn't map memory range of registers\n");
7481 rc = -ENOMEM;
7482 goto out_release_regions;
7483 }
7484
7485 ioa_cfg->hdw_dma_regs = ipr_regs;
7486 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7487 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7488
7489 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7490
7491 pci_set_master(pdev);
7492
7493 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7494 if (rc < 0) {
7495 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7496 goto cleanup_nomem;
7497 }
7498
7499 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7500 ioa_cfg->chip_cfg->cache_line_size);
7501
7502 if (rc != PCIBIOS_SUCCESSFUL) {
7503 dev_err(&pdev->dev, "Write of cache line size failed\n");
7504 rc = -EIO;
7505 goto cleanup_nomem;
7506 }
7507
7508 /* Save away PCI config space for use following IOA reset */
7509 rc = pci_save_state(pdev);
7510
7511 if (rc != PCIBIOS_SUCCESSFUL) {
7512 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7513 rc = -EIO;
7514 goto cleanup_nomem;
7515 }
7516
7517 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7518 goto cleanup_nomem;
7519
7520 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7521 goto cleanup_nomem;
7522
7523 rc = ipr_alloc_mem(ioa_cfg);
7524 if (rc < 0) {
7525 dev_err(&pdev->dev,
7526 "Couldn't allocate enough memory for device driver!\n");
7527 goto cleanup_nomem;
7528 }
7529
ce155cce
BK		 7530 /*
7531 * If HRRQ updated interrupt is not masked, or reset alert is set,
7532 * the card is in an unknown state and needs a hard reset
7533 */
7534 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7535 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7536 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7537 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7538 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7539 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7540 ioa_cfg->needs_hard_reset = 1;
7541 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7542 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7543
1da177e4 7544 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7545 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7546
7547 if (rc) {
7548 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7549 pdev->irq, rc);
7550 goto cleanup_nolog;
7551 }
7552
463fc696
BK		 7553 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7554 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7555 ioa_cfg->needs_warm_reset = 1;
7556 ioa_cfg->reset = ipr_reset_slot_reset;
7557 } else
7558 ioa_cfg->reset = ipr_reset_start_bist;
7559
1da177e4
LT		 7560 spin_lock(&ipr_driver_lock);
7561 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7562 spin_unlock(&ipr_driver_lock);
7563
7564 LEAVE;
7565out:
7566 return rc;
7567
7568cleanup_nolog:
7569 ipr_free_mem(ioa_cfg);
7570cleanup_nomem:
7571 iounmap(ipr_regs);
7572out_release_regions:
7573 pci_release_regions(pdev);
7574out_scsi_host_put:
7575 scsi_host_put(host);
7576out_disable:
7577 pci_disable_device(pdev);
7578 goto out;
7579}
7580
7581/**
7582 * ipr_scan_vsets - Scans for VSET devices
7583 * @ioa_cfg: ioa config struct
7584 *
7585 * Description: Since the VSET resources do not follow SAM in that we can have
7586 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7587 *
7588 * Return value:
7589 * none
7590 **/
7591static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7592{
7593 int target, lun;
7594
7595 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7596 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7597 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7598}
7599
7600/**
7601 * ipr_initiate_ioa_bringdown - Bring down an adapter
7602 * @ioa_cfg: ioa config struct
7603 * @shutdown_type: shutdown type
7604 *
7605 * Description: This function will initiate bringing down the adapter.
7606 * This consists of issuing an IOA shutdown to the adapter
7607 * to flush the cache, and running BIST.
7608 * If the caller needs to wait on the completion of the reset,
7609 * the caller must sleep on the reset_wait_q.
7610 *
7611 * Return value:
7612 * none
7613 **/
7614static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7615 enum ipr_shutdown_type shutdown_type)
7616{
7617 ENTER;
7618 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7619 ioa_cfg->sdt_state = ABORT_DUMP;
7620 ioa_cfg->reset_retries = 0;
7621 ioa_cfg->in_ioa_bringdown = 1;
7622 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7623 LEAVE;
7624}
7625
7626/**
7627 * __ipr_remove - Remove a single adapter
7628 * @pdev: pci device struct
7629 *
7630 * Adapter hot plug remove entry point.
7631 *
7632 * Return value:
7633 * none
7634 **/
7635static void __ipr_remove(struct pci_dev *pdev)
7636{
7637 unsigned long host_lock_flags = 0;
7638 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7639 ENTER;
7640
7641 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7642 while(ioa_cfg->in_reset_reload) {
7643 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7644 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7645 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7646 }
7647
1da177e4
LT		 7648 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7649
7650 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7651 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7652 flush_scheduled_work();
1da177e4
LT		 7653 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7654
7655 spin_lock(&ipr_driver_lock);
7656 list_del(&ioa_cfg->queue);
7657 spin_unlock(&ipr_driver_lock);
7658
7659 if (ioa_cfg->sdt_state == ABORT_DUMP)
7660 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7661 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7662
7663 ipr_free_all_resources(ioa_cfg);
7664
7665 LEAVE;
7666}
7667
7668/**
7669 * ipr_remove - IOA hot plug remove entry point
7670 * @pdev: pci device struct
7671 *
7672 * Adapter hot plug remove entry point.
7673 *
7674 * Return value:
7675 * none
7676 **/
7677static void ipr_remove(struct pci_dev *pdev)
7678{
7679 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7680
7681 ENTER;
7682
ee959b00 7683 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4 7684 &ipr_trace_attr);
ee959b00 7685 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7686 &ipr_dump_attr);
7687 scsi_remove_host(ioa_cfg->host);
7688
7689 __ipr_remove(pdev);
7690
7691 LEAVE;
7692}
7693
7694/**
7695 * ipr_probe - Adapter hot plug add entry point
7696 *
7697 * Return value:
7698 * 0 on success / non-zero on failure
7699 **/
7700static int __devinit ipr_probe(struct pci_dev *pdev,
7701 const struct pci_device_id *dev_id)
7702{
7703 struct ipr_ioa_cfg *ioa_cfg;
7704 int rc;
7705
7706 rc = ipr_probe_ioa(pdev, dev_id);
7707
7708 if (rc)
7709 return rc;
7710
7711 ioa_cfg = pci_get_drvdata(pdev);
7712 rc = ipr_probe_ioa_part2(ioa_cfg);
7713
7714 if (rc) {
7715 __ipr_remove(pdev);
7716 return rc;
7717 }
7718
7719 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7720
7721 if (rc) {
7722 __ipr_remove(pdev);
7723 return rc;
7724 }
7725
ee959b00 7726 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7727 &ipr_trace_attr);
7728
7729 if (rc) {
7730 scsi_remove_host(ioa_cfg->host);
7731 __ipr_remove(pdev);
7732 return rc;
7733 }
7734
ee959b00 7735 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7736 &ipr_dump_attr);
7737
7738 if (rc) {
ee959b00 7739 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
1da177e4
LT		 7740 &ipr_trace_attr);
7741 scsi_remove_host(ioa_cfg->host);
7742 __ipr_remove(pdev);
7743 return rc;
7744 }
7745
7746 scsi_scan_host(ioa_cfg->host);
7747 ipr_scan_vsets(ioa_cfg);
7748 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7749 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7750 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7751 schedule_work(&ioa_cfg->work_q);
7752 return 0;
7753}
7754
7755/**
7756 * ipr_shutdown - Shutdown handler.
d18c3db5 7757 * @pdev: pci device struct
1da177e4
LT		 7758 *
7759 * This function is invoked upon system shutdown/reboot. It will issue
7760 * an adapter shutdown to the adapter to flush the write cache.
7761 *
7762 * Return value:
7763 * none
7764 **/
d18c3db5 7765static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7766{
d18c3db5 7767 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7768 unsigned long lock_flags = 0;
7769
7770 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7771 while(ioa_cfg->in_reset_reload) {
7772 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7773 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7774 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7775 }
7776
1da177e4
LT		 7777 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7780}
7781
7782static struct pci_device_id ipr_pci_table[] __devinitdata = {
7783 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7784 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7785 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7786 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7787 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7788 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7789 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7790 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7791 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7792 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7793 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7794 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7795 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7796 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7797 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7798 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7799 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7800 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7801 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7802 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 7803 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7804 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7805 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7806 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7807 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7808 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7810 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7811 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7812 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7813 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7814 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7815 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7816 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7818 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7819 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7820 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7821 IPR_USE_LONG_TRANSOP_TIMEOUT },
7822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7824 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7826 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7827 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7829 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7830 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7831 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7832 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7833 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7834 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7835 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7836 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7837 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7838 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7839 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7840 { }
7841};
7842MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7843
f8a88b19
LV		 7844static struct pci_error_handlers ipr_err_handler = {
7845 .error_detected = ipr_pci_error_detected,
7846 .slot_reset = ipr_pci_slot_reset,
7847};
7848
1da177e4
LT		 7849static struct pci_driver ipr_driver = {
7850 .name = IPR_NAME,
7851 .id_table = ipr_pci_table,
7852 .probe = ipr_probe,
7853 .remove = ipr_remove,
d18c3db5 7854 .shutdown = ipr_shutdown,
f8a88b19 7855 .err_handler = &ipr_err_handler,
1da177e4
LT		 7856};
7857
7858/**
7859 * ipr_init - Module entry point
7860 *
7861 * Return value:
7862 * 0 on success / negative value on failure
7863 **/
7864static int __init ipr_init(void)
7865{
7866 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7867 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7868
dcbccbde 7869 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7870}
7871
7872/**
7873 * ipr_exit - Module unload
7874 *
7875 * Module unload entry point.
7876 *
7877 * Return value:
7878 * none
7879 **/
7880static void __exit ipr_exit(void)
7881{
7882 pci_unregister_driver(&ipr_driver);
7883}
7884
7885module_init(ipr_init);
7886module_exit(ipr_exit);
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