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Update libata driver for bf548 atapi controller against the 2.6.24 tree.
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
CommitLineData
1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
1da177e4
LT		 57#include <linux/fs.h>
58#include <linux/init.h>
59#include <linux/types.h>
60#include <linux/errno.h>
61#include <linux/kernel.h>
62#include <linux/ioport.h>
63#include <linux/delay.h>
64#include <linux/pci.h>
65#include <linux/wait.h>
66#include <linux/spinlock.h>
67#include <linux/sched.h>
68#include <linux/interrupt.h>
69#include <linux/blkdev.h>
70#include <linux/firmware.h>
71#include <linux/module.h>
72#include <linux/moduleparam.h>
35a39691 73#include <linux/libata.h>
1da177e4
LT		 74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
1da177e4
LT		 82#include "ipr.h"
83
84/*
85 * Global Data
86 */
87static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89static unsigned int ipr_max_speed = 1;
90static int ipr_testmode = 0;
91static unsigned int ipr_fastfail = 0;
5469cb5b 92static unsigned int ipr_transop_timeout = 0;
62275040 93static unsigned int ipr_enable_cache = 1;
d3c74871 94static unsigned int ipr_debug = 0;
ac09c349 95static unsigned int ipr_dual_ioa_raid = 1;
1da177e4
LT		 96static DEFINE_SPINLOCK(ipr_driver_lock);
97
98/* This table describes the differences between DMA controller chips */
99static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
60e7486b 100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
1da177e4
LT		 101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130};
131
132static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
86f51436
BK		 135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
60e7486b 137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
1da177e4
LT		 138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140};
141
142static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144};
145
146MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148module_param_named(max_speed, ipr_max_speed, uint, 0);
149MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150module_param_named(log_level, ipr_log_level, uint, 0);
151MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152module_param_named(testmode, ipr_testmode, int, 0);
153MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154module_param_named(fastfail, ipr_fastfail, int, 0);
155MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
62275040
BK		 158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
d3c74871
BK		 160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
ac09c349
BK		 162module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
163MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
1da177e4
LT		 164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
1da177e4
LT		 167/* A constant array of IOASCs/URCs/Error Messages */
168static const
169struct ipr_error_table_t ipr_error_table[] = {
933916f3 170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 171 "8155: An unknown error was received"},
172 {0x00330000, 0, 0,
173 "Soft underlength error"},
174 {0x005A0000, 0, 0,
175 "Command to be cancelled not found"},
176 {0x00808000, 0, 0,
177 "Qualified success"},
933916f3 178 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 179 "FFFE: Soft device bus error recovered by the IOA"},
933916f3 180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 181 "4101: Soft device bus fabric error"},
933916f3 182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 183 "FFF9: Device sector reassign successful"},
933916f3 184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 185 "FFF7: Media error recovered by device rewrite procedures"},
933916f3 186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 187 "7001: IOA sector reassignment successful"},
933916f3 188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 189 "FFF9: Soft media error. Sector reassignment recommended"},
933916f3 190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 191 "FFF7: Media error recovered by IOA rewrite procedures"},
933916f3 192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 193 "FF3D: Soft PCI bus error recovered by the IOA"},
933916f3 194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 195 "FFF6: Device hardware error recovered by the IOA"},
933916f3 196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 197 "FFF6: Device hardware error recovered by the device"},
933916f3 198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 199 "FF3D: Soft IOA error recovered by the IOA"},
933916f3 200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 201 "FFFA: Undefined device response recovered by the IOA"},
933916f3 202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 203 "FFF6: Device bus error, message or command phase"},
933916f3 204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
35a39691 205 "FFFE: Task Management Function failed"},
933916f3 206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 207 "FFF6: Failure prediction threshold exceeded"},
933916f3 208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
65f56475
BK		 212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
213 "9070: IOA requested reset"},
1da177e4
LT		 214 {0x023F0000, 0, 0,
215 "Synchronization required"},
216 {0x024E0000, 0, 0,
217 "No ready, IOA shutdown"},
218 {0x025A0000, 0, 0,
219 "Not ready, IOA has been shutdown"},
933916f3 220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 221 "3020: Storage subsystem configuration error"},
222 {0x03110B00, 0, 0,
223 "FFF5: Medium error, data unreadable, recommend reassign"},
224 {0x03110C00, 0, 0,
225 "7000: Medium error, data unreadable, do not reassign"},
933916f3 226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 227 "FFF3: Disk media format bad"},
933916f3 228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 229 "3002: Addressed device failed to respond to selection"},
933916f3 230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 231 "3100: Device bus error"},
933916f3 232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 233 "3109: IOA timed out a device command"},
234 {0x04088000, 0, 0,
235 "3120: SCSI bus is not operational"},
933916f3 236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 237 "4100: Hard device bus fabric error"},
933916f3 238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 239 "9000: IOA reserved area data check"},
933916f3 240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 241 "9001: IOA reserved area invalid data pattern"},
933916f3 242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 243 "9002: IOA reserved area LRC error"},
933916f3 244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 245 "102E: Out of alternate sectors for disk storage"},
933916f3 246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 247 "FFF4: Data transfer underlength error"},
933916f3 248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 249 "FFF4: Data transfer overlength error"},
933916f3 250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 251 "3400: Logical unit failure"},
933916f3 252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 253 "FFF4: Device microcode is corrupt"},
933916f3 254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 255 "8150: PCI bus error"},
256 {0x04430000, 1, 0,
257 "Unsupported device bus message received"},
933916f3 258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 259 "FFF4: Disk device problem"},
933916f3 260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 261 "8150: Permanent IOA failure"},
933916f3 262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 263 "3010: Disk device returned wrong response to IOA"},
933916f3 264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 265 "8151: IOA microcode error"},
266 {0x04448500, 0, 0,
267 "Device bus status error"},
933916f3 268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 269 "8157: IOA error requiring IOA reset to recover"},
35a39691
BK		 270 {0x04448700, 0, 0,
271 "ATA device status error"},
1da177e4
LT		 272 {0x04490000, 0, 0,
273 "Message reject received from the device"},
933916f3 274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 275 "8008: A permanent cache battery pack failure occurred"},
933916f3 276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 277 "9090: Disk unit has been modified after the last known status"},
933916f3 278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 279 "9081: IOA detected device error"},
933916f3 280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 281 "9082: IOA detected device error"},
933916f3 282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
1da177e4 283 "3110: Device bus error, message or command phase"},
933916f3 284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
35a39691 285 "3110: SAS Command / Task Management Function failed"},
933916f3 286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 287 "9091: Incorrect hardware configuration change has been detected"},
933916f3 288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 289 "9073: Invalid multi-adapter configuration"},
933916f3 290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 291 "4010: Incorrect connection between cascaded expanders"},
933916f3 292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 293 "4020: Connections exceed IOA design limits"},
933916f3 294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 295 "4030: Incorrect multipath connection"},
933916f3 296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 297 "4110: Unsupported enclosure function"},
933916f3 298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 299 "FFF4: Command to logical unit failed"},
300 {0x05240000, 1, 0,
301 "Illegal request, invalid request type or request packet"},
302 {0x05250000, 0, 0,
303 "Illegal request, invalid resource handle"},
b0df54bb
BK		 304 {0x05258000, 0, 0,
305 "Illegal request, commands not allowed to this device"},
306 {0x05258100, 0, 0,
307 "Illegal request, command not allowed to a secondary adapter"},
1da177e4
LT		 308 {0x05260000, 0, 0,
309 "Illegal request, invalid field in parameter list"},
310 {0x05260100, 0, 0,
311 "Illegal request, parameter not supported"},
312 {0x05260200, 0, 0,
313 "Illegal request, parameter value invalid"},
314 {0x052C0000, 0, 0,
315 "Illegal request, command sequence error"},
b0df54bb
BK		 316 {0x052C8000, 1, 0,
317 "Illegal request, dual adapter support not enabled"},
933916f3 318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 319 "9031: Array protection temporarily suspended, protection resuming"},
933916f3 320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 321 "9040: Array protection temporarily suspended, protection resuming"},
933916f3 322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 323 "3140: Device bus not ready to ready transition"},
933916f3 324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 325 "FFFB: SCSI bus was reset"},
326 {0x06290500, 0, 0,
327 "FFFE: SCSI bus transition to single ended"},
328 {0x06290600, 0, 0,
329 "FFFE: SCSI bus transition to LVD"},
933916f3 330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 331 "FFFB: SCSI bus was reset by another initiator"},
933916f3 332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 333 "3029: A device replacement has occurred"},
933916f3 334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 335 "9051: IOA cache data exists for a missing or failed device"},
933916f3 336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
933916f3 338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 339 "9025: Disk unit is not supported at its physical location"},
933916f3 340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 341 "3020: IOA detected a SCSI bus configuration error"},
933916f3 342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 343 "3150: SCSI bus configuration error"},
933916f3 344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 345 "9074: Asymmetric advanced function disk configuration"},
933916f3 346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 347 "4040: Incomplete multipath connection between IOA and enclosure"},
933916f3 348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 349 "4041: Incomplete multipath connection between enclosure and device"},
933916f3 350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 351 "9075: Incomplete multipath connection between IOA and remote IOA"},
933916f3 352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 353 "9076: Configuration error, missing remote IOA"},
933916f3 354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 355 "4050: Enclosure does not support a required multipath function"},
933916f3 356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 357 "9041: Array protection temporarily suspended"},
933916f3 358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 359 "9042: Corrupt array parity detected on specified device"},
933916f3 360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 361 "9030: Array no longer protected due to missing or failed disk unit"},
933916f3 362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 363 "9071: Link operational transition"},
933916f3 364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
b0df54bb 365 "9072: Link not operational transition"},
933916f3 366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 367 "9032: Array exposed but still protected"},
e435340c
BK		 368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
369 "70DD: Device forced failed by disrupt device command"},
933916f3 370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 371 "4061: Multipath redundancy level got better"},
933916f3 372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
896bbd21 373 "4060: Multipath redundancy level got worse"},
1da177e4
LT		 374 {0x07270000, 0, 0,
375 "Failure due to other device"},
933916f3 376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 377 "9008: IOA does not support functions expected by devices"},
933916f3 378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 379 "9010: Cache data associated with attached devices cannot be found"},
933916f3 380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 381 "9011: Cache data belongs to devices other than those attached"},
933916f3 382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 383 "9020: Array missing 2 or more devices with only 1 device present"},
933916f3 384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 385 "9021: Array missing 2 or more devices with 2 or more devices present"},
933916f3 386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 387 "9022: Exposed array is missing a required device"},
933916f3 388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 389 "9023: Array member(s) not at required physical locations"},
933916f3 390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 391 "9024: Array not functional due to present hardware configuration"},
933916f3 392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 393 "9026: Array not functional due to present hardware configuration"},
933916f3 394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 395 "9027: Array is missing a device and parity is out of sync"},
933916f3 396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 397 "9028: Maximum number of arrays already exist"},
933916f3 398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 399 "9050: Required cache data cannot be located for a disk unit"},
933916f3 400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 401 "9052: Cache data exists for a device that has been modified"},
933916f3 402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 403 "9054: IOA resources not available due to previous problems"},
933916f3 404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 405 "9092: Disk unit requires initialization before use"},
933916f3 406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 407 "9029: Incorrect hardware configuration change has been detected"},
933916f3 408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 409 "9060: One or more disk pairs are missing from an array"},
933916f3 410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 411 "9061: One or more disks are missing from an array"},
933916f3 412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4 413 "9062: One or more disks are missing from an array"},
933916f3 414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
1da177e4
LT		 415 "9063: Maximum number of functional arrays has been exceeded"},
416 {0x0B260000, 0, 0,
417 "Aborted command, invalid descriptor"},
418 {0x0B5A0000, 0, 0,
419 "Command terminated by host"}
420};
421
422static const struct ipr_ses_table_entry ipr_ses_table[] = {
423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
436};
437
438/*
439 * Function Prototypes
440 */
441static int ipr_reset_alert(struct ipr_cmnd *);
442static void ipr_process_ccn(struct ipr_cmnd *);
443static void ipr_process_error(struct ipr_cmnd *);
444static void ipr_reset_ioa_job(struct ipr_cmnd *);
445static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
446 enum ipr_shutdown_type);
447
448#ifdef CONFIG_SCSI_IPR_TRACE
449/**
450 * ipr_trc_hook - Add a trace entry to the driver trace
451 * @ipr_cmd: ipr command struct
452 * @type: trace type
453 * @add_data: additional data
454 *
455 * Return value:
456 * none
457 **/
458static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
459 u8 type, u32 add_data)
460{
461 struct ipr_trace_entry *trace_entry;
462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
463
464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
465 trace_entry->time = jiffies;
466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
467 trace_entry->type = type;
35a39691
BK		 468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
1da177e4
LT		 470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
471 trace_entry->u.add_data = add_data;
472}
473#else
474#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
475#endif
476
477/**
478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
479 * @ipr_cmd: ipr command struct
480 *
481 * Return value:
482 * none
483 **/
484static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
485{
486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
51b1c7e1 488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 489
490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
491 ioarcb->write_data_transfer_length = 0;
492 ioarcb->read_data_transfer_length = 0;
493 ioarcb->write_ioadl_len = 0;
494 ioarcb->read_ioadl_len = 0;
51b1c7e1
BK		 495 ioarcb->write_ioadl_addr =
496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 498 ioasa->ioasc = 0;
499 ioasa->residual_data_len = 0;
35a39691 500 ioasa->u.gata.status = 0;
1da177e4
LT		 501
502 ipr_cmd->scsi_cmd = NULL;
35a39691 503 ipr_cmd->qc = NULL;
1da177e4
LT		 504 ipr_cmd->sense_buffer[0] = 0;
505 ipr_cmd->dma_use_sg = 0;
506}
507
508/**
509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
510 * @ipr_cmd: ipr command struct
511 *
512 * Return value:
513 * none
514 **/
515static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
516{
517 ipr_reinit_ipr_cmnd(ipr_cmd);
518 ipr_cmd->u.scratch = 0;
519 ipr_cmd->sibling = NULL;
520 init_timer(&ipr_cmd->timer);
521}
522
523/**
524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
525 * @ioa_cfg: ioa config struct
526 *
527 * Return value:
528 * pointer to ipr command struct
529 **/
530static
531struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
532{
533 struct ipr_cmnd *ipr_cmd;
534
535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
536 list_del(&ipr_cmd->queue);
537 ipr_init_ipr_cmnd(ipr_cmd);
538
539 return ipr_cmd;
540}
541
1da177e4
LT		 542/**
543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
544 * @ioa_cfg: ioa config struct
545 * @clr_ints: interrupts to clear
546 *
547 * This function masks all interrupts on the adapter, then clears the
548 * interrupts specified in the mask
549 *
550 * Return value:
551 * none
552 **/
553static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
554 u32 clr_ints)
555{
556 volatile u32 int_reg;
557
558 /* Stop new interrupts */
559 ioa_cfg->allow_interrupts = 0;
560
561 /* Set interrupt mask to stop all new interrupts */
562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
563
564 /* Clear any pending interrupts */
565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
567}
568
569/**
570 * ipr_save_pcix_cmd_reg - Save PCI-X command register
571 * @ioa_cfg: ioa config struct
572 *
573 * Return value:
574 * 0 on success / -EIO on failure
575 **/
576static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
577{
578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
579
7dce0e1c
BK		 580 if (pcix_cmd_reg == 0)
581 return 0;
1da177e4
LT		 582
583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
590 return 0;
591}
592
593/**
594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
595 * @ioa_cfg: ioa config struct
596 *
597 * Return value:
598 * 0 on success / -EIO on failure
599 **/
600static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
601{
602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
603
604 if (pcix_cmd_reg) {
605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
608 return -EIO;
609 }
1da177e4
LT		 610 }
611
612 return 0;
613}
614
35a39691
BK		 615/**
616 * ipr_sata_eh_done - done function for aborted SATA commands
617 * @ipr_cmd: ipr command struct
618 *
619 * This function is invoked for ops generated to SATA
620 * devices which are being aborted.
621 *
622 * Return value:
623 * none
624 **/
625static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
626{
627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
628 struct ata_queued_cmd *qc = ipr_cmd->qc;
629 struct ipr_sata_port *sata_port = qc->ap->private_data;
630
631 qc->err_mask |= AC_ERR_OTHER;
632 sata_port->ioasa.status |= ATA_BUSY;
633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
634 ata_qc_complete(qc);
635}
636
1da177e4
LT		 637/**
638 * ipr_scsi_eh_done - mid-layer done function for aborted ops
639 * @ipr_cmd: ipr command struct
640 *
641 * This function is invoked by the interrupt handler for
642 * ops generated by the SCSI mid-layer which are being aborted.
643 *
644 * Return value:
645 * none
646 **/
647static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
648{
649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
651
652 scsi_cmd->result |= (DID_ERROR << 16);
653
63015bc9 654 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 655 scsi_cmd->scsi_done(scsi_cmd);
656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
657}
658
659/**
660 * ipr_fail_all_ops - Fails all outstanding ops.
661 * @ioa_cfg: ioa config struct
662 *
663 * This function fails all outstanding ops.
664 *
665 * Return value:
666 * none
667 **/
668static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
669{
670 struct ipr_cmnd *ipr_cmd, *temp;
671
672 ENTER;
673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
674 list_del(&ipr_cmd->queue);
675
676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
678
679 if (ipr_cmd->scsi_cmd)
680 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 681 else if (ipr_cmd->qc)
682 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 683
684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
685 del_timer(&ipr_cmd->timer);
686 ipr_cmd->done(ipr_cmd);
687 }
688
689 LEAVE;
690}
691
692/**
693 * ipr_do_req - Send driver initiated requests.
694 * @ipr_cmd: ipr command struct
695 * @done: done function
696 * @timeout_func: timeout function
697 * @timeout: timeout value
698 *
699 * This function sends the specified command to the adapter with the
700 * timeout given. The done function is invoked on command completion.
701 *
702 * Return value:
703 * none
704 **/
705static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
706 void (*done) (struct ipr_cmnd *),
707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
708{
709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
710
711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
712
713 ipr_cmd->done = done;
714
715 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
716 ipr_cmd->timer.expires = jiffies + timeout;
717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
718
719 add_timer(&ipr_cmd->timer);
720
721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
722
723 mb();
724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
725 ioa_cfg->regs.ioarrin_reg);
726}
727
728/**
729 * ipr_internal_cmd_done - Op done function for an internally generated op.
730 * @ipr_cmd: ipr command struct
731 *
732 * This function is the op done function for an internally generated,
733 * blocking op. It simply wakes the sleeping thread.
734 *
735 * Return value:
736 * none
737 **/
738static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
739{
740 if (ipr_cmd->sibling)
741 ipr_cmd->sibling = NULL;
742 else
743 complete(&ipr_cmd->completion);
744}
745
746/**
747 * ipr_send_blocking_cmd - Send command and sleep on its completion.
748 * @ipr_cmd: ipr command struct
749 * @timeout_func: function to invoke if command times out
750 * @timeout: timeout
751 *
752 * Return value:
753 * none
754 **/
755static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
757 u32 timeout)
758{
759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
760
761 init_completion(&ipr_cmd->completion);
762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
763
764 spin_unlock_irq(ioa_cfg->host->host_lock);
765 wait_for_completion(&ipr_cmd->completion);
766 spin_lock_irq(ioa_cfg->host->host_lock);
767}
768
769/**
770 * ipr_send_hcam - Send an HCAM to the adapter.
771 * @ioa_cfg: ioa config struct
772 * @type: HCAM type
773 * @hostrcb: hostrcb struct
774 *
775 * This function will send a Host Controlled Async command to the adapter.
776 * If HCAMs are currently not allowed to be issued to the adapter, it will
777 * place the hostrcb on the free queue.
778 *
779 * Return value:
780 * none
781 **/
782static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
783 struct ipr_hostrcb *hostrcb)
784{
785 struct ipr_cmnd *ipr_cmd;
786 struct ipr_ioarcb *ioarcb;
787
788 if (ioa_cfg->allow_cmds) {
789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
792
793 ipr_cmd->u.hostrcb = hostrcb;
794 ioarcb = &ipr_cmd->ioarcb;
795
796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
799 ioarcb->cmd_pkt.cdb[1] = type;
800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
802
803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
805 ipr_cmd->ioadl[0].flags_and_data_len =
806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
808
809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
810 ipr_cmd->done = ipr_process_ccn;
811 else
812 ipr_cmd->done = ipr_process_error;
813
814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
815
816 mb();
817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
818 ioa_cfg->regs.ioarrin_reg);
819 } else {
820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
821 }
822}
823
824/**
825 * ipr_init_res_entry - Initialize a resource entry struct.
826 * @res: resource entry struct
827 *
828 * Return value:
829 * none
830 **/
831static void ipr_init_res_entry(struct ipr_resource_entry *res)
832{
ee0a90fa 833 res->needs_sync_complete = 0;
1da177e4
LT		 834 res->in_erp = 0;
835 res->add_to_ml = 0;
836 res->del_from_ml = 0;
837 res->resetting_device = 0;
838 res->sdev = NULL;
35a39691 839 res->sata_port = NULL;
1da177e4
LT		 840}
841
842/**
843 * ipr_handle_config_change - Handle a config change from the adapter
844 * @ioa_cfg: ioa config struct
845 * @hostrcb: hostrcb
846 *
847 * Return value:
848 * none
849 **/
850static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
851 struct ipr_hostrcb *hostrcb)
852{
853 struct ipr_resource_entry *res = NULL;
854 struct ipr_config_table_entry *cfgte;
855 u32 is_ndn = 1;
856
857 cfgte = &hostrcb->hcam.u.ccn.cfgte;
858
859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
861 sizeof(cfgte->res_addr))) {
862 is_ndn = 0;
863 break;
864 }
865 }
866
867 if (is_ndn) {
868 if (list_empty(&ioa_cfg->free_res_q)) {
869 ipr_send_hcam(ioa_cfg,
870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
871 hostrcb);
872 return;
873 }
874
875 res = list_entry(ioa_cfg->free_res_q.next,
876 struct ipr_resource_entry, queue);
877
878 list_del(&res->queue);
879 ipr_init_res_entry(res);
880 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
881 }
882
883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
884
885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
886 if (res->sdev) {
1da177e4 887 res->del_from_ml = 1;
1121b794 888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 889 if (ioa_cfg->allow_ml_add_del)
890 schedule_work(&ioa_cfg->work_q);
891 } else
892 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
893 } else if (!res->sdev) {
894 res->add_to_ml = 1;
895 if (ioa_cfg->allow_ml_add_del)
896 schedule_work(&ioa_cfg->work_q);
897 }
898
899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
900}
901
902/**
903 * ipr_process_ccn - Op done function for a CCN.
904 * @ipr_cmd: ipr command struct
905 *
906 * This function is the op done function for a configuration
907 * change notification host controlled async from the adapter.
908 *
909 * Return value:
910 * none
911 **/
912static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
913{
914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
917
918 list_del(&hostrcb->queue);
919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
920
921 if (ioasc) {
922 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
923 dev_err(&ioa_cfg->pdev->dev,
924 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
925
926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
927 } else {
928 ipr_handle_config_change(ioa_cfg, hostrcb);
929 }
930}
931
8cf093e2
BK		 932/**
933 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
934 * @i: index into buffer
935 * @buf: string to modify
936 *
937 * This function will strip all trailing whitespace, pad the end
938 * of the string with a single space, and NULL terminate the string.
939 *
940 * Return value:
941 * new length of string
942 **/
943static int strip_and_pad_whitespace(int i, char *buf)
944{
945 while (i && buf[i] == ' ')
946 i--;
947 buf[i+1] = ' ';
948 buf[i+2] = '\0';
949 return i + 2;
950}
951
952/**
953 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
954 * @prefix: string to print at start of printk
955 * @hostrcb: hostrcb pointer
956 * @vpd: vendor/product id/sn struct
957 *
958 * Return value:
959 * none
960 **/
961static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
962 struct ipr_vpd *vpd)
963{
964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
965 int i = 0;
966
967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
969
970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
975
976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
977}
978
1da177e4
LT		 979/**
980 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 981 * @vpd: vendor/product id/sn struct
1da177e4
LT		 982 *
983 * Return value:
984 * none
985 **/
cfc32139 986static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 987{
988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
989 + IPR_SERIAL_NUM_LEN];
990
cfc32139
BK		 991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 993 IPR_PROD_ID_LEN);
994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
995 ipr_err("Vendor/Product ID: %s\n", buffer);
996
cfc32139 997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 998 buffer[IPR_SERIAL_NUM_LEN] = '\0';
999 ipr_err(" Serial Number: %s\n", buffer);
1000}
1001
8cf093e2
BK		 1002/**
1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1004 * @prefix: string to print at start of printk
1005 * @hostrcb: hostrcb pointer
1006 * @vpd: vendor/product id/sn/wwn struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1012 struct ipr_ext_vpd *vpd)
1013{
1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1017}
1018
ee0f05b8
BK		 1019/**
1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1021 * @vpd: vendor/product id/sn/wwn struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1027{
1028 ipr_log_vpd(&vpd->vpd);
1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1030 be32_to_cpu(vpd->wwid[1]));
1031}
1032
1033/**
1034 * ipr_log_enhanced_cache_error - Log a cache error.
1035 * @ioa_cfg: ioa config struct
1036 * @hostrcb: hostrcb struct
1037 *
1038 * Return value:
1039 * none
1040 **/
1041static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1042 struct ipr_hostrcb *hostrcb)
1043{
1044 struct ipr_hostrcb_type_12_error *error =
1045 &hostrcb->hcam.u.error.u.type_12_error;
1046
1047 ipr_err("-----Current Configuration-----\n");
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&error->ioa_vpd);
1050 ipr_err("Adapter Card Information:\n");
1051 ipr_log_ext_vpd(&error->cfc_vpd);
1052
1053 ipr_err("-----Expected Configuration-----\n");
1054 ipr_err("Cache Directory Card Information:\n");
1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1056 ipr_err("Adapter Card Information:\n");
1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1058
1059 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1060 be32_to_cpu(error->ioa_data[0]),
1061 be32_to_cpu(error->ioa_data[1]),
1062 be32_to_cpu(error->ioa_data[2]));
1063}
1064
1da177e4
LT		 1065/**
1066 * ipr_log_cache_error - Log a cache error.
1067 * @ioa_cfg: ioa config struct
1068 * @hostrcb: hostrcb struct
1069 *
1070 * Return value:
1071 * none
1072 **/
1073static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1074 struct ipr_hostrcb *hostrcb)
1075{
1076 struct ipr_hostrcb_type_02_error *error =
1077 &hostrcb->hcam.u.error.u.type_02_error;
1078
1079 ipr_err("-----Current Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
cfc32139 1081 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1082 ipr_err("Adapter Card Information:\n");
cfc32139 1083 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1084
1085 ipr_err("-----Expected Configuration-----\n");
1086 ipr_err("Cache Directory Card Information:\n");
cfc32139 1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1088 ipr_err("Adapter Card Information:\n");
cfc32139 1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1090
1091 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1092 be32_to_cpu(error->ioa_data[0]),
1093 be32_to_cpu(error->ioa_data[1]),
1094 be32_to_cpu(error->ioa_data[2]));
1095}
1096
ee0f05b8
BK		 1097/**
1098 * ipr_log_enhanced_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107{
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1110 struct ipr_hostrcb_type_13_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_13_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
1118 dev_entry = error->dev;
1119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1124 ipr_log_ext_vpd(&dev_entry->vpd);
1125
1126 ipr_err("-----New Device Information-----\n");
1127 ipr_log_ext_vpd(&dev_entry->new_vpd);
1128
1129 ipr_err("Cache Directory Card Information:\n");
1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1131
1132 ipr_err("Adapter Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1134 }
1135}
1136
1da177e4
LT		 1137/**
1138 * ipr_log_config_error - Log a configuration error.
1139 * @ioa_cfg: ioa config struct
1140 * @hostrcb: hostrcb struct
1141 *
1142 * Return value:
1143 * none
1144 **/
1145static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1146 struct ipr_hostrcb *hostrcb)
1147{
1148 int errors_logged, i;
1149 struct ipr_hostrcb_device_data_entry *dev_entry;
1150 struct ipr_hostrcb_type_03_error *error;
1151
1152 error = &hostrcb->hcam.u.error.u.type_03_error;
1153 errors_logged = be32_to_cpu(error->errors_logged);
1154
1155 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1156 be32_to_cpu(error->errors_detected), errors_logged);
1157
cfc32139 1158 dev_entry = error->dev;
1da177e4
LT		 1159
1160 for (i = 0; i < errors_logged; i++, dev_entry++) {
1161 ipr_err_separator;
1162
fa15b1f6 1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1164 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1165
1166 ipr_err("-----New Device Information-----\n");
cfc32139 1167 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1168
1169 ipr_err("Cache Directory Card Information:\n");
cfc32139 1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1171
1172 ipr_err("Adapter Card Information:\n");
cfc32139 1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1174
1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1176 be32_to_cpu(dev_entry->ioa_data[0]),
1177 be32_to_cpu(dev_entry->ioa_data[1]),
1178 be32_to_cpu(dev_entry->ioa_data[2]),
1179 be32_to_cpu(dev_entry->ioa_data[3]),
1180 be32_to_cpu(dev_entry->ioa_data[4]));
1181 }
1182}
1183
ee0f05b8
BK		 1184/**
1185 * ipr_log_enhanced_array_error - Log an array configuration error.
1186 * @ioa_cfg: ioa config struct
1187 * @hostrcb: hostrcb struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1193 struct ipr_hostrcb *hostrcb)
1194{
1195 int i, num_entries;
1196 struct ipr_hostrcb_type_14_error *error;
1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1199
1200 error = &hostrcb->hcam.u.error.u.type_14_error;
1201
1202 ipr_err_separator;
1203
1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1205 error->protection_level,
1206 ioa_cfg->host->host_no,
1207 error->last_func_vset_res_addr.bus,
1208 error->last_func_vset_res_addr.target,
1209 error->last_func_vset_res_addr.lun);
1210
1211 ipr_err_separator;
1212
1213 array_entry = error->array_member;
1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1215 sizeof(error->array_member));
1216
1217 for (i = 0; i < num_entries; i++, array_entry++) {
1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1219 continue;
1220
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1223 else
1224 ipr_err("Array Member %d:\n", i);
1225
1226 ipr_log_ext_vpd(&array_entry->vpd);
1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1229 "Expected Location");
1230
1231 ipr_err_separator;
1232 }
1233}
1234
1da177e4
LT		 1235/**
1236 * ipr_log_array_error - Log an array configuration error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245{
1246 int i;
1247 struct ipr_hostrcb_type_04_error *error;
1248 struct ipr_hostrcb_array_data_entry *array_entry;
1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1250
1251 error = &hostrcb->hcam.u.error.u.type_04_error;
1252
1253 ipr_err_separator;
1254
1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1256 error->protection_level,
1257 ioa_cfg->host->host_no,
1258 error->last_func_vset_res_addr.bus,
1259 error->last_func_vset_res_addr.target,
1260 error->last_func_vset_res_addr.lun);
1261
1262 ipr_err_separator;
1263
1264 array_entry = error->array_member;
1265
1266 for (i = 0; i < 18; i++) {
cfc32139 1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1268 continue;
1269
fa15b1f6 1270 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1271 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1272 else
1da177e4 1273 ipr_err("Array Member %d:\n", i);
1da177e4 1274
cfc32139 1275 ipr_log_vpd(&array_entry->vpd);
1da177e4 1276
fa15b1f6
BK		 1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1279 "Expected Location");
1da177e4
LT		 1280
1281 ipr_err_separator;
1282
1283 if (i == 9)
1284 array_entry = error->array_member2;
1285 else
1286 array_entry++;
1287 }
1288}
1289
1290/**
b0df54bb 1291 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1292 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1293 * @data: IOA error data
1294 * @len: data length
1da177e4
LT		 1295 *
1296 * Return value:
1297 * none
1298 **/
ac719aba 1299static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1300{
1301 int i;
1da177e4 1302
b0df54bb 1303 if (len == 0)
1da177e4
LT		 1304 return;
1305
ac719aba
BK		 1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1308
b0df54bb 1309 for (i = 0; i < len / 4; i += 4) {
1da177e4 1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1311 be32_to_cpu(data[i]),
1312 be32_to_cpu(data[i+1]),
1313 be32_to_cpu(data[i+2]),
1314 be32_to_cpu(data[i+3]));
1da177e4
LT		 1315 }
1316}
1317
ee0f05b8
BK		 1318/**
1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1320 * @ioa_cfg: ioa config struct
1321 * @hostrcb: hostrcb struct
1322 *
1323 * Return value:
1324 * none
1325 **/
1326static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1327 struct ipr_hostrcb *hostrcb)
1328{
1329 struct ipr_hostrcb_type_17_error *error;
1330
1331 error = &hostrcb->hcam.u.error.u.type_17_error;
1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1333 strstrip(error->failure_reason);
ee0f05b8 1334
8cf093e2
BK		 1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1336 be32_to_cpu(hostrcb->hcam.u.error.prc));
1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1338 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1339 be32_to_cpu(hostrcb->hcam.length) -
1340 (offsetof(struct ipr_hostrcb_error, u) +
1341 offsetof(struct ipr_hostrcb_type_17_error, data)));
1342}
1343
b0df54bb
BK		 1344/**
1345 * ipr_log_dual_ioa_error - Log a dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354{
1355 struct ipr_hostrcb_type_07_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_07_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1359 strstrip(error->failure_reason);
b0df54bb 1360
8cf093e2
BK		 1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1362 be32_to_cpu(hostrcb->hcam.u.error.prc));
1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1364 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_07_error, data)));
1368}
1369
49dc6a18
BK		 1370static const struct {
1371 u8 active;
1372 char *desc;
1373} path_active_desc[] = {
1374 { IPR_PATH_NO_INFO, "Path" },
1375 { IPR_PATH_ACTIVE, "Active path" },
1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1377};
1378
1379static const struct {
1380 u8 state;
1381 char *desc;
1382} path_state_desc[] = {
1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1384 { IPR_PATH_HEALTHY, "is healthy" },
1385 { IPR_PATH_DEGRADED, "is degraded" },
1386 { IPR_PATH_FAILED, "is failed" }
1387};
1388
1389/**
1390 * ipr_log_fabric_path - Log a fabric path error
1391 * @hostrcb: hostrcb struct
1392 * @fabric: fabric descriptor
1393 *
1394 * Return value:
1395 * none
1396 **/
1397static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1398 struct ipr_hostrcb_fabric_desc *fabric)
1399{
1400 int i, j;
1401 u8 path_state = fabric->path_state;
1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1403 u8 state = path_state & IPR_PATH_STATE_MASK;
1404
1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1406 if (path_active_desc[i].active != active)
1407 continue;
1408
1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1410 if (path_state_desc[j].state != state)
1411 continue;
1412
1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1415 path_active_desc[i].desc, path_state_desc[j].desc,
1416 fabric->ioa_port);
1417 } else if (fabric->cascaded_expander == 0xff) {
1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1419 path_active_desc[i].desc, path_state_desc[j].desc,
1420 fabric->ioa_port, fabric->phy);
1421 } else if (fabric->phy == 0xff) {
1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1423 path_active_desc[i].desc, path_state_desc[j].desc,
1424 fabric->ioa_port, fabric->cascaded_expander);
1425 } else {
1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1427 path_active_desc[i].desc, path_state_desc[j].desc,
1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1429 }
1430 return;
1431 }
1432 }
1433
1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1436}
1437
1438static const struct {
1439 u8 type;
1440 char *desc;
1441} path_type_desc[] = {
1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1446};
1447
1448static const struct {
1449 u8 status;
1450 char *desc;
1451} path_status_desc[] = {
1452 { IPR_PATH_CFG_NO_PROB, "Functional" },
1453 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1454 { IPR_PATH_CFG_FAILED, "Failed" },
1455 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1456 { IPR_PATH_NOT_DETECTED, "Missing" },
1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1458};
1459
1460static const char *link_rate[] = {
1461 "unknown",
1462 "disabled",
1463 "phy reset problem",
1464 "spinup hold",
1465 "port selector",
1466 "unknown",
1467 "unknown",
1468 "unknown",
1469 "1.5Gbps",
1470 "3.0Gbps",
1471 "unknown",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown"
1477};
1478
1479/**
1480 * ipr_log_path_elem - Log a fabric path element.
1481 * @hostrcb: hostrcb struct
1482 * @cfg: fabric path element struct
1483 *
1484 * Return value:
1485 * none
1486 **/
1487static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1488 struct ipr_hostrcb_config_element *cfg)
1489{
1490 int i, j;
1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1493
1494 if (type == IPR_PATH_CFG_NOT_EXIST)
1495 return;
1496
1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1498 if (path_type_desc[i].type != type)
1499 continue;
1500
1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1502 if (path_status_desc[j].status != status)
1503 continue;
1504
1505 if (type == IPR_PATH_CFG_IOA_PORT) {
1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1507 path_status_desc[j].desc, path_type_desc[i].desc,
1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1510 } else {
1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1513 path_status_desc[j].desc, path_type_desc[i].desc,
1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1516 } else if (cfg->cascaded_expander == 0xff) {
1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1518 "WWN=%08X%08X\n", path_status_desc[j].desc,
1519 path_type_desc[i].desc, cfg->phy,
1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1522 } else if (cfg->phy == 0xff) {
1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1524 "WWN=%08X%08X\n", path_status_desc[j].desc,
1525 path_type_desc[i].desc, cfg->cascaded_expander,
1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1528 } else {
1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1530 "WWN=%08X%08X\n", path_status_desc[j].desc,
1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1534 }
1535 }
1536 return;
1537 }
1538 }
1539
1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1544}
1545
1546/**
1547 * ipr_log_fabric_error - Log a fabric error.
1548 * @ioa_cfg: ioa config struct
1549 * @hostrcb: hostrcb struct
1550 *
1551 * Return value:
1552 * none
1553 **/
1554static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1555 struct ipr_hostrcb *hostrcb)
1556{
1557 struct ipr_hostrcb_type_20_error *error;
1558 struct ipr_hostrcb_fabric_desc *fabric;
1559 struct ipr_hostrcb_config_element *cfg;
1560 int i, add_len;
1561
1562 error = &hostrcb->hcam.u.error.u.type_20_error;
1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1565
1566 add_len = be32_to_cpu(hostrcb->hcam.length) -
1567 (offsetof(struct ipr_hostrcb_error, u) +
1568 offsetof(struct ipr_hostrcb_type_20_error, desc));
1569
1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1571 ipr_log_fabric_path(hostrcb, fabric);
1572 for_each_fabric_cfg(fabric, cfg)
1573 ipr_log_path_elem(hostrcb, cfg);
1574
1575 add_len -= be16_to_cpu(fabric->length);
1576 fabric = (struct ipr_hostrcb_fabric_desc *)
1577 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1578 }
1579
ac719aba 1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1581}
1582
b0df54bb
BK		 1583/**
1584 * ipr_log_generic_error - Log an adapter error.
1585 * @ioa_cfg: ioa config struct
1586 * @hostrcb: hostrcb struct
1587 *
1588 * Return value:
1589 * none
1590 **/
1591static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1592 struct ipr_hostrcb *hostrcb)
1593{
ac719aba 1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 1595 be32_to_cpu(hostrcb->hcam.length));
1596}
1597
1da177e4
LT		 1598/**
1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1600 * @ioasc: IOASC
1601 *
1602 * This function will return the index of into the ipr_error_table
1603 * for the specified IOASC. If the IOASC is not in the table,
1604 * 0 will be returned, which points to the entry used for unknown errors.
1605 *
1606 * Return value:
1607 * index into the ipr_error_table
1608 **/
1609static u32 ipr_get_error(u32 ioasc)
1610{
1611 int i;
1612
1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1615 return i;
1616
1617 return 0;
1618}
1619
1620/**
1621 * ipr_handle_log_data - Log an adapter error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * This function logs an adapter error to the system.
1626 *
1627 * Return value:
1628 * none
1629 **/
1630static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1631 struct ipr_hostrcb *hostrcb)
1632{
1633 u32 ioasc;
1634 int error_index;
1635
1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1637 return;
1638
1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1641
1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1643
1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1647 scsi_report_bus_reset(ioa_cfg->host,
1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1649 }
1650
1651 error_index = ipr_get_error(ioasc);
1652
1653 if (!ipr_error_table[error_index].log_hcam)
1654 return;
1655
49dc6a18 1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1657
1658 /* Set indication we have logged an error */
1659 ioa_cfg->errors_logged++;
1660
933916f3 1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1662 return;
cf852037
BK		 1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1665
1666 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1667 case IPR_HOST_RCB_OVERLAY_ID_2:
1668 ipr_log_cache_error(ioa_cfg, hostrcb);
1669 break;
1670 case IPR_HOST_RCB_OVERLAY_ID_3:
1671 ipr_log_config_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_4:
1674 case IPR_HOST_RCB_OVERLAY_ID_6:
1675 ipr_log_array_error(ioa_cfg, hostrcb);
1676 break;
b0df54bb
BK		 1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
ee0f05b8
BK		 1680 case IPR_HOST_RCB_OVERLAY_ID_12:
1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_13:
1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_14:
1687 case IPR_HOST_RCB_OVERLAY_ID_16:
1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1689 break;
1690 case IPR_HOST_RCB_OVERLAY_ID_17:
1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1692 break;
49dc6a18
BK		 1693 case IPR_HOST_RCB_OVERLAY_ID_20:
1694 ipr_log_fabric_error(ioa_cfg, hostrcb);
1695 break;
cf852037 1696 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1698 default:
a9cfca96 1699 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1700 break;
1701 }
1702}
1703
1704/**
1705 * ipr_process_error - Op done function for an adapter error log.
1706 * @ipr_cmd: ipr command struct
1707 *
1708 * This function is the op done function for an error log host
1709 * controlled async from the adapter. It will log the error and
1710 * send the HCAM back to the adapter.
1711 *
1712 * Return value:
1713 * none
1714 **/
1715static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1716{
1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1721
1722 list_del(&hostrcb->queue);
1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1724
1725 if (!ioasc) {
1726 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1730 dev_err(&ioa_cfg->pdev->dev,
1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1732 }
1733
1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1735}
1736
1737/**
1738 * ipr_timeout - An internally generated op has timed out.
1739 * @ipr_cmd: ipr command struct
1740 *
1741 * This function blocks host requests and initiates an
1742 * adapter reset.
1743 *
1744 * Return value:
1745 * none
1746 **/
1747static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1748{
1749 unsigned long lock_flags = 0;
1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1751
1752 ENTER;
1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1754
1755 ioa_cfg->errors_logged++;
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Adapter being reset due to command timeout.\n");
1758
1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1760 ioa_cfg->sdt_state = GET_DUMP;
1761
1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1764
1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1766 LEAVE;
1767}
1768
1769/**
1770 * ipr_oper_timeout - Adapter timed out transitioning to operational
1771 * @ipr_cmd: ipr command struct
1772 *
1773 * This function blocks host requests and initiates an
1774 * adapter reset.
1775 *
1776 * Return value:
1777 * none
1778 **/
1779static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1780{
1781 unsigned long lock_flags = 0;
1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1783
1784 ENTER;
1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1786
1787 ioa_cfg->errors_logged++;
1788 dev_err(&ioa_cfg->pdev->dev,
1789 "Adapter timed out transitioning to operational.\n");
1790
1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1792 ioa_cfg->sdt_state = GET_DUMP;
1793
1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1795 if (ipr_fastfail)
1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1798 }
1799
1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1801 LEAVE;
1802}
1803
1804/**
1805 * ipr_reset_reload - Reset/Reload the IOA
1806 * @ioa_cfg: ioa config struct
1807 * @shutdown_type: shutdown type
1808 *
1809 * This function resets the adapter and re-initializes it.
1810 * This function assumes that all new host commands have been stopped.
1811 * Return value:
1812 * SUCCESS / FAILED
1813 **/
1814static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1815 enum ipr_shutdown_type shutdown_type)
1816{
1817 if (!ioa_cfg->in_reset_reload)
1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1819
1820 spin_unlock_irq(ioa_cfg->host->host_lock);
1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1822 spin_lock_irq(ioa_cfg->host->host_lock);
1823
1824 /* If we got hit with a host reset while we were already resetting
1825 the adapter for some reason, and the reset failed. */
1826 if (ioa_cfg->ioa_is_dead) {
1827 ipr_trace;
1828 return FAILED;
1829 }
1830
1831 return SUCCESS;
1832}
1833
1834/**
1835 * ipr_find_ses_entry - Find matching SES in SES table
1836 * @res: resource entry struct of SES
1837 *
1838 * Return value:
1839 * pointer to SES table entry / NULL on failure
1840 **/
1841static const struct ipr_ses_table_entry *
1842ipr_find_ses_entry(struct ipr_resource_entry *res)
1843{
1844 int i, j, matches;
1845 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1846
1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1849 if (ste->compare_product_id_byte[j] == 'X') {
1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1851 matches++;
1852 else
1853 break;
1854 } else
1855 matches++;
1856 }
1857
1858 if (matches == IPR_PROD_ID_LEN)
1859 return ste;
1860 }
1861
1862 return NULL;
1863}
1864
1865/**
1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1867 * @ioa_cfg: ioa config struct
1868 * @bus: SCSI bus
1869 * @bus_width: bus width
1870 *
1871 * Return value:
1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1874 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1875 * max 160MHz = max 320MB/sec).
1876 **/
1877static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1878{
1879 struct ipr_resource_entry *res;
1880 const struct ipr_ses_table_entry *ste;
1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1882
1883 /* Loop through each config table entry in the config table buffer */
1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1886 continue;
1887
1888 if (bus != res->cfgte.res_addr.bus)
1889 continue;
1890
1891 if (!(ste = ipr_find_ses_entry(res)))
1892 continue;
1893
1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1895 }
1896
1897 return max_xfer_rate;
1898}
1899
1900/**
1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1902 * @ioa_cfg: ioa config struct
1903 * @max_delay: max delay in micro-seconds to wait
1904 *
1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1906 *
1907 * Return value:
1908 * 0 on success / other on failure
1909 **/
1910static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1911{
1912 volatile u32 pcii_reg;
1913 int delay = 1;
1914
1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1916 while (delay < max_delay) {
1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1918
1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1920 return 0;
1921
1922 /* udelay cannot be used if delay is more than a few milliseconds */
1923 if ((delay / 1000) > MAX_UDELAY_MS)
1924 mdelay(delay / 1000);
1925 else
1926 udelay(delay);
1927
1928 delay += delay;
1929 }
1930 return -EIO;
1931}
1932
1933/**
1934 * ipr_get_ldump_data_section - Dump IOA memory
1935 * @ioa_cfg: ioa config struct
1936 * @start_addr: adapter address to dump
1937 * @dest: destination kernel buffer
1938 * @length_in_words: length to dump in 4 byte words
1939 *
1940 * Return value:
1941 * 0 on success / -EIO on failure
1942 **/
1943static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1944 u32 start_addr,
1945 __be32 *dest, u32 length_in_words)
1946{
1947 volatile u32 temp_pcii_reg;
1948 int i, delay = 0;
1949
1950 /* Write IOA interrupt reg starting LDUMP state */
1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1952 ioa_cfg->regs.set_uproc_interrupt_reg);
1953
1954 /* Wait for IO debug acknowledge */
1955 if (ipr_wait_iodbg_ack(ioa_cfg,
1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1957 dev_err(&ioa_cfg->pdev->dev,
1958 "IOA dump long data transfer timeout\n");
1959 return -EIO;
1960 }
1961
1962 /* Signal LDUMP interlocked - clear IO debug ack */
1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1964 ioa_cfg->regs.clr_interrupt_reg);
1965
1966 /* Write Mailbox with starting address */
1967 writel(start_addr, ioa_cfg->ioa_mailbox);
1968
1969 /* Signal address valid - clear IOA Reset alert */
1970 writel(IPR_UPROCI_RESET_ALERT,
1971 ioa_cfg->regs.clr_uproc_interrupt_reg);
1972
1973 for (i = 0; i < length_in_words; i++) {
1974 /* Wait for IO debug acknowledge */
1975 if (ipr_wait_iodbg_ack(ioa_cfg,
1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1977 dev_err(&ioa_cfg->pdev->dev,
1978 "IOA dump short data transfer timeout\n");
1979 return -EIO;
1980 }
1981
1982 /* Read data from mailbox and increment destination pointer */
1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1984 dest++;
1985
1986 /* For all but the last word of data, signal data received */
1987 if (i < (length_in_words - 1)) {
1988 /* Signal dump data received - Clear IO debug Ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991 }
1992 }
1993
1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1995 writel(IPR_UPROCI_RESET_ALERT,
1996 ioa_cfg->regs.set_uproc_interrupt_reg);
1997
1998 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1999 ioa_cfg->regs.clr_uproc_interrupt_reg);
2000
2001 /* Signal dump data received - Clear IO debug Ack */
2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2003 ioa_cfg->regs.clr_interrupt_reg);
2004
2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2007 temp_pcii_reg =
2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2009
2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2011 return 0;
2012
2013 udelay(10);
2014 delay += 10;
2015 }
2016
2017 return 0;
2018}
2019
2020#ifdef CONFIG_SCSI_IPR_DUMP
2021/**
2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2023 * @ioa_cfg: ioa config struct
2024 * @pci_address: adapter address
2025 * @length: length of data to copy
2026 *
2027 * Copy data from PCI adapter to kernel buffer.
2028 * Note: length MUST be a 4 byte multiple
2029 * Return value:
2030 * 0 on success / other on failure
2031 **/
2032static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2033 unsigned long pci_address, u32 length)
2034{
2035 int bytes_copied = 0;
2036 int cur_len, rc, rem_len, rem_page_len;
2037 __be32 *page;
2038 unsigned long lock_flags = 0;
2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2040
2041 while (bytes_copied < length &&
2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2043 if (ioa_dump->page_offset >= PAGE_SIZE ||
2044 ioa_dump->page_offset == 0) {
2045 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2046
2047 if (!page) {
2048 ipr_trace;
2049 return bytes_copied;
2050 }
2051
2052 ioa_dump->page_offset = 0;
2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2054 ioa_dump->next_page_index++;
2055 } else
2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2057
2058 rem_len = length - bytes_copied;
2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2060 cur_len = min(rem_len, rem_page_len);
2061
2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2063 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2064 rc = -EIO;
2065 } else {
2066 rc = ipr_get_ldump_data_section(ioa_cfg,
2067 pci_address + bytes_copied,
2068 &page[ioa_dump->page_offset / 4],
2069 (cur_len / sizeof(u32)));
2070 }
2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2072
2073 if (!rc) {
2074 ioa_dump->page_offset += cur_len;
2075 bytes_copied += cur_len;
2076 } else {
2077 ipr_trace;
2078 break;
2079 }
2080 schedule();
2081 }
2082
2083 return bytes_copied;
2084}
2085
2086/**
2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2088 * @hdr: dump entry header struct
2089 *
2090 * Return value:
2091 * nothing
2092 **/
2093static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2094{
2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2096 hdr->num_elems = 1;
2097 hdr->offset = sizeof(*hdr);
2098 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2099}
2100
2101/**
2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2103 * @ioa_cfg: ioa config struct
2104 * @driver_dump: driver dump struct
2105 *
2106 * Return value:
2107 * nothing
2108 **/
2109static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2110 struct ipr_driver_dump *driver_dump)
2111{
2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2113
2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2115 driver_dump->ioa_type_entry.hdr.len =
2116 sizeof(struct ipr_dump_ioa_type_entry) -
2117 sizeof(struct ipr_dump_entry_header);
2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2120 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2123 ucode_vpd->minor_release[1];
2124 driver_dump->hdr.num_entries++;
2125}
2126
2127/**
2128 * ipr_dump_version_data - Fill in the driver version in the dump.
2129 * @ioa_cfg: ioa config struct
2130 * @driver_dump: driver dump struct
2131 *
2132 * Return value:
2133 * nothing
2134 **/
2135static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137{
2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2139 driver_dump->version_entry.hdr.len =
2140 sizeof(struct ipr_dump_version_entry) -
2141 sizeof(struct ipr_dump_entry_header);
2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2145 driver_dump->hdr.num_entries++;
2146}
2147
2148/**
2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2150 * @ioa_cfg: ioa config struct
2151 * @driver_dump: driver dump struct
2152 *
2153 * Return value:
2154 * nothing
2155 **/
2156static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2157 struct ipr_driver_dump *driver_dump)
2158{
2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2160 driver_dump->trace_entry.hdr.len =
2161 sizeof(struct ipr_dump_trace_entry) -
2162 sizeof(struct ipr_dump_entry_header);
2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2166 driver_dump->hdr.num_entries++;
2167}
2168
2169/**
2170 * ipr_dump_location_data - Fill in the IOA location in the dump.
2171 * @ioa_cfg: ioa config struct
2172 * @driver_dump: driver dump struct
2173 *
2174 * Return value:
2175 * nothing
2176 **/
2177static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2178 struct ipr_driver_dump *driver_dump)
2179{
2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2181 driver_dump->location_entry.hdr.len =
2182 sizeof(struct ipr_dump_location_entry) -
2183 sizeof(struct ipr_dump_entry_header);
2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2187 driver_dump->hdr.num_entries++;
2188}
2189
2190/**
2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2192 * @ioa_cfg: ioa config struct
2193 * @dump: dump struct
2194 *
2195 * Return value:
2196 * nothing
2197 **/
2198static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2199{
2200 unsigned long start_addr, sdt_word;
2201 unsigned long lock_flags = 0;
2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2204 u32 num_entries, start_off, end_off;
2205 u32 bytes_to_copy, bytes_copied, rc;
2206 struct ipr_sdt *sdt;
2207 int i;
2208
2209 ENTER;
2210
2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2212
2213 if (ioa_cfg->sdt_state != GET_DUMP) {
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return;
2216 }
2217
2218 start_addr = readl(ioa_cfg->ioa_mailbox);
2219
2220 if (!ipr_sdt_is_fmt2(start_addr)) {
2221 dev_err(&ioa_cfg->pdev->dev,
2222 "Invalid dump table format: %lx\n", start_addr);
2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2224 return;
2225 }
2226
2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2228
2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2230
2231 /* Initialize the overall dump header */
2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2233 driver_dump->hdr.num_entries = 1;
2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2238
2239 ipr_dump_version_data(ioa_cfg, driver_dump);
2240 ipr_dump_location_data(ioa_cfg, driver_dump);
2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2242 ipr_dump_trace_data(ioa_cfg, driver_dump);
2243
2244 /* Update dump_header */
2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2246
2247 /* IOA Dump entry */
2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2249 ioa_dump->format = IPR_SDT_FMT2;
2250 ioa_dump->hdr.len = 0;
2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2253
2254 /* First entries in sdt are actually a list of dump addresses and
2255 lengths to gather the real dump data. sdt represents the pointer
2256 to the ioa generated dump table. Dump data will be extracted based
2257 on entries in this table */
2258 sdt = &ioa_dump->sdt;
2259
2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2261 sizeof(struct ipr_sdt) / sizeof(__be32));
2262
2263 /* Smart Dump table is ready to use and the first entry is valid */
2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2265 dev_err(&ioa_cfg->pdev->dev,
2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2267 rc, be32_to_cpu(sdt->hdr.state));
2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2269 ioa_cfg->sdt_state = DUMP_OBTAINED;
2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2271 return;
2272 }
2273
2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2275
2276 if (num_entries > IPR_NUM_SDT_ENTRIES)
2277 num_entries = IPR_NUM_SDT_ENTRIES;
2278
2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2280
2281 for (i = 0; i < num_entries; i++) {
2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2284 break;
2285 }
2286
2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2290 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2291
2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2293 bytes_to_copy = end_off - start_off;
2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2296 continue;
2297 }
2298
2299 /* Copy data from adapter to driver buffers */
2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2301 bytes_to_copy);
2302
2303 ioa_dump->hdr.len += bytes_copied;
2304
2305 if (bytes_copied != bytes_to_copy) {
2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2307 break;
2308 }
2309 }
2310 }
2311 }
2312
2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2314
2315 /* Update dump_header */
2316 driver_dump->hdr.len += ioa_dump->hdr.len;
2317 wmb();
2318 ioa_cfg->sdt_state = DUMP_OBTAINED;
2319 LEAVE;
2320}
2321
2322#else
2323#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2324#endif
2325
2326/**
2327 * ipr_release_dump - Free adapter dump memory
2328 * @kref: kref struct
2329 *
2330 * Return value:
2331 * nothing
2332 **/
2333static void ipr_release_dump(struct kref *kref)
2334{
2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2337 unsigned long lock_flags = 0;
2338 int i;
2339
2340 ENTER;
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 ioa_cfg->dump = NULL;
2343 ioa_cfg->sdt_state = INACTIVE;
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345
2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2348
2349 kfree(dump);
2350 LEAVE;
2351}
2352
2353/**
2354 * ipr_worker_thread - Worker thread
c4028958 2355 * @work: ioa config struct
1da177e4
LT		 2356 *
2357 * Called at task level from a work thread. This function takes care
2358 * of adding and removing device from the mid-layer as configuration
2359 * changes are detected by the adapter.
2360 *
2361 * Return value:
2362 * nothing
2363 **/
c4028958 2364static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2365{
2366 unsigned long lock_flags;
2367 struct ipr_resource_entry *res;
2368 struct scsi_device *sdev;
2369 struct ipr_dump *dump;
c4028958
DH		 2370 struct ipr_ioa_cfg *ioa_cfg =
2371 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2372 u8 bus, target, lun;
2373 int did_work;
2374
2375 ENTER;
2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2377
2378 if (ioa_cfg->sdt_state == GET_DUMP) {
2379 dump = ioa_cfg->dump;
2380 if (!dump) {
2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2382 return;
2383 }
2384 kref_get(&dump->kref);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 ipr_get_ioa_dump(ioa_cfg, dump);
2387 kref_put(&dump->kref, ipr_release_dump);
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2393 return;
2394 }
2395
2396restart:
2397 do {
2398 did_work = 0;
2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 return;
2402 }
2403
2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2405 if (res->del_from_ml && res->sdev) {
2406 did_work = 1;
2407 sdev = res->sdev;
2408 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2411 scsi_remove_device(sdev);
2412 scsi_device_put(sdev);
2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2414 }
2415 break;
2416 }
2417 }
2418 } while(did_work);
2419
2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2421 if (res->add_to_ml) {
2422 bus = res->cfgte.res_addr.bus;
2423 target = res->cfgte.res_addr.target;
2424 lun = res->cfgte.res_addr.lun;
1121b794 2425 res->add_to_ml = 0;
1da177e4
LT		 2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 scsi_add_device(ioa_cfg->host, bus, target, lun);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 goto restart;
2430 }
2431 }
2432
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
312c004d 2434 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2435 LEAVE;
2436}
2437
2438#ifdef CONFIG_SCSI_IPR_TRACE
2439/**
2440 * ipr_read_trace - Dump the adapter trace
2441 * @kobj: kobject struct
91a69029 2442 * @bin_attr: bin_attribute struct
1da177e4
LT		 2443 * @buf: buffer
2444 * @off: offset
2445 * @count: buffer size
2446 *
2447 * Return value:
2448 * number of bytes printed to buffer
2449 **/
91a69029
ZR		 2450static ssize_t ipr_read_trace(struct kobject *kobj,
2451 struct bin_attribute *bin_attr,
2452 char *buf, loff_t off, size_t count)
1da177e4
LT		 2453{
2454 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2455 struct Scsi_Host *shost = class_to_shost(cdev);
2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2457 unsigned long lock_flags = 0;
2458 int size = IPR_TRACE_SIZE;
2459 char *src = (char *)ioa_cfg->trace;
2460
2461 if (off > size)
2462 return 0;
2463 if (off + count > size) {
2464 size -= off;
2465 count = size;
2466 }
2467
2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2469 memcpy(buf, &src[off], count);
2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 return count;
2472}
2473
2474static struct bin_attribute ipr_trace_attr = {
2475 .attr = {
2476 .name = "trace",
2477 .mode = S_IRUGO,
2478 },
2479 .size = 0,
2480 .read = ipr_read_trace,
2481};
2482#endif
2483
62275040
BK		 2484static const struct {
2485 enum ipr_cache_state state;
2486 char *name;
2487} cache_state [] = {
2488 { CACHE_NONE, "none" },
2489 { CACHE_DISABLED, "disabled" },
2490 { CACHE_ENABLED, "enabled" }
2491};
2492
2493/**
2494 * ipr_show_write_caching - Show the write caching attribute
2495 * @class_dev: class device struct
2496 * @buf: buffer
2497 *
2498 * Return value:
2499 * number of bytes printed to buffer
2500 **/
2501static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2502{
2503 struct Scsi_Host *shost = class_to_shost(class_dev);
2504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2505 unsigned long lock_flags = 0;
2506 int i, len = 0;
2507
2508 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2509 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2510 if (cache_state[i].state == ioa_cfg->cache_state) {
2511 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2512 break;
2513 }
2514 }
2515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2516 return len;
2517}
2518
2519
2520/**
2521 * ipr_store_write_caching - Enable/disable adapter write cache
2522 * @class_dev: class_device struct
2523 * @buf: buffer
2524 * @count: buffer size
2525 *
2526 * This function will enable/disable adapter write cache.
2527 *
2528 * Return value:
2529 * count on success / other on failure
2530 **/
2531static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2532 const char *buf, size_t count)
2533{
2534 struct Scsi_Host *shost = class_to_shost(class_dev);
2535 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2536 unsigned long lock_flags = 0;
2537 enum ipr_cache_state new_state = CACHE_INVALID;
2538 int i;
2539
2540 if (!capable(CAP_SYS_ADMIN))
2541 return -EACCES;
2542 if (ioa_cfg->cache_state == CACHE_NONE)
2543 return -EINVAL;
2544
2545 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2546 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2547 new_state = cache_state[i].state;
2548 break;
2549 }
2550 }
2551
2552 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2553 return -EINVAL;
2554
2555 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2556 if (ioa_cfg->cache_state == new_state) {
2557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2558 return count;
2559 }
2560
2561 ioa_cfg->cache_state = new_state;
2562 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2563 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2564 if (!ioa_cfg->in_reset_reload)
2565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2567 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2568
2569 return count;
2570}
2571
2572static struct class_device_attribute ipr_ioa_cache_attr = {
2573 .attr = {
2574 .name = "write_cache",
2575 .mode = S_IRUGO | S_IWUSR,
2576 },
2577 .show = ipr_show_write_caching,
2578 .store = ipr_store_write_caching
2579};
2580
1da177e4
LT		 2581/**
2582 * ipr_show_fw_version - Show the firmware version
2583 * @class_dev: class device struct
2584 * @buf: buffer
2585 *
2586 * Return value:
2587 * number of bytes printed to buffer
2588 **/
2589static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2590{
2591 struct Scsi_Host *shost = class_to_shost(class_dev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2593 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2594 unsigned long lock_flags = 0;
2595 int len;
2596
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2599 ucode_vpd->major_release, ucode_vpd->card_type,
2600 ucode_vpd->minor_release[0],
2601 ucode_vpd->minor_release[1]);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2603 return len;
2604}
2605
2606static struct class_device_attribute ipr_fw_version_attr = {
2607 .attr = {
2608 .name = "fw_version",
2609 .mode = S_IRUGO,
2610 },
2611 .show = ipr_show_fw_version,
2612};
2613
2614/**
2615 * ipr_show_log_level - Show the adapter's error logging level
2616 * @class_dev: class device struct
2617 * @buf: buffer
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2623{
2624 struct Scsi_Host *shost = class_to_shost(class_dev);
2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2626 unsigned long lock_flags = 0;
2627 int len;
2628
2629 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2630 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2631 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2632 return len;
2633}
2634
2635/**
2636 * ipr_store_log_level - Change the adapter's error logging level
2637 * @class_dev: class device struct
2638 * @buf: buffer
2639 *
2640 * Return value:
2641 * number of bytes printed to buffer
2642 **/
2643static ssize_t ipr_store_log_level(struct class_device *class_dev,
2644 const char *buf, size_t count)
2645{
2646 struct Scsi_Host *shost = class_to_shost(class_dev);
2647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2648 unsigned long lock_flags = 0;
2649
2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2651 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2653 return strlen(buf);
2654}
2655
2656static struct class_device_attribute ipr_log_level_attr = {
2657 .attr = {
2658 .name = "log_level",
2659 .mode = S_IRUGO | S_IWUSR,
2660 },
2661 .show = ipr_show_log_level,
2662 .store = ipr_store_log_level
2663};
2664
2665/**
2666 * ipr_store_diagnostics - IOA Diagnostics interface
2667 * @class_dev: class_device struct
2668 * @buf: buffer
2669 * @count: buffer size
2670 *
2671 * This function will reset the adapter and wait a reasonable
2672 * amount of time for any errors that the adapter might log.
2673 *
2674 * Return value:
2675 * count on success / other on failure
2676 **/
2677static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2678 const char *buf, size_t count)
2679{
2680 struct Scsi_Host *shost = class_to_shost(class_dev);
2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2682 unsigned long lock_flags = 0;
2683 int rc = count;
2684
2685 if (!capable(CAP_SYS_ADMIN))
2686 return -EACCES;
2687
1da177e4 2688 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2689 while(ioa_cfg->in_reset_reload) {
2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2691 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2693 }
2694
1da177e4
LT		 2695 ioa_cfg->errors_logged = 0;
2696 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2697
2698 if (ioa_cfg->in_reset_reload) {
2699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2700 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2701
2702 /* Wait for a second for any errors to be logged */
2703 msleep(1000);
2704 } else {
2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2706 return -EIO;
2707 }
2708
2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2710 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2711 rc = -EIO;
2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713
2714 return rc;
2715}
2716
2717static struct class_device_attribute ipr_diagnostics_attr = {
2718 .attr = {
2719 .name = "run_diagnostics",
2720 .mode = S_IWUSR,
2721 },
2722 .store = ipr_store_diagnostics
2723};
2724
f37eb54b
BK		 2725/**
2726 * ipr_show_adapter_state - Show the adapter's state
2727 * @class_dev: class device struct
2728 * @buf: buffer
2729 *
2730 * Return value:
2731 * number of bytes printed to buffer
2732 **/
2733static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2734{
2735 struct Scsi_Host *shost = class_to_shost(class_dev);
2736 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2737 unsigned long lock_flags = 0;
2738 int len;
2739
2740 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2741 if (ioa_cfg->ioa_is_dead)
2742 len = snprintf(buf, PAGE_SIZE, "offline\n");
2743 else
2744 len = snprintf(buf, PAGE_SIZE, "online\n");
2745 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2746 return len;
2747}
2748
2749/**
2750 * ipr_store_adapter_state - Change adapter state
2751 * @class_dev: class_device struct
2752 * @buf: buffer
2753 * @count: buffer size
2754 *
2755 * This function will change the adapter's state.
2756 *
2757 * Return value:
2758 * count on success / other on failure
2759 **/
2760static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2761 const char *buf, size_t count)
2762{
2763 struct Scsi_Host *shost = class_to_shost(class_dev);
2764 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2765 unsigned long lock_flags;
2766 int result = count;
2767
2768 if (!capable(CAP_SYS_ADMIN))
2769 return -EACCES;
2770
2771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2772 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2773 ioa_cfg->ioa_is_dead = 0;
2774 ioa_cfg->reset_retries = 0;
2775 ioa_cfg->in_ioa_bringdown = 0;
2776 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2777 }
2778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2780
2781 return result;
2782}
2783
2784static struct class_device_attribute ipr_ioa_state_attr = {
2785 .attr = {
2786 .name = "state",
2787 .mode = S_IRUGO | S_IWUSR,
2788 },
2789 .show = ipr_show_adapter_state,
2790 .store = ipr_store_adapter_state
2791};
2792
1da177e4
LT		 2793/**
2794 * ipr_store_reset_adapter - Reset the adapter
2795 * @class_dev: class_device struct
2796 * @buf: buffer
2797 * @count: buffer size
2798 *
2799 * This function will reset the adapter.
2800 *
2801 * Return value:
2802 * count on success / other on failure
2803 **/
2804static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2805 const char *buf, size_t count)
2806{
2807 struct Scsi_Host *shost = class_to_shost(class_dev);
2808 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2809 unsigned long lock_flags;
2810 int result = count;
2811
2812 if (!capable(CAP_SYS_ADMIN))
2813 return -EACCES;
2814
2815 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2816 if (!ioa_cfg->in_reset_reload)
2817 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2818 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2819 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2820
2821 return result;
2822}
2823
2824static struct class_device_attribute ipr_ioa_reset_attr = {
2825 .attr = {
2826 .name = "reset_host",
2827 .mode = S_IWUSR,
2828 },
2829 .store = ipr_store_reset_adapter
2830};
2831
2832/**
2833 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2834 * @buf_len: buffer length
2835 *
2836 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2837 * list to use for microcode download
2838 *
2839 * Return value:
2840 * pointer to sglist / NULL on failure
2841 **/
2842static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2843{
2844 int sg_size, order, bsize_elem, num_elem, i, j;
2845 struct ipr_sglist *sglist;
2846 struct scatterlist *scatterlist;
2847 struct page *page;
2848
2849 /* Get the minimum size per scatter/gather element */
2850 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2851
2852 /* Get the actual size per element */
2853 order = get_order(sg_size);
2854
2855 /* Determine the actual number of bytes per element */
2856 bsize_elem = PAGE_SIZE * (1 << order);
2857
2858 /* Determine the actual number of sg entries needed */
2859 if (buf_len % bsize_elem)
2860 num_elem = (buf_len / bsize_elem) + 1;
2861 else
2862 num_elem = buf_len / bsize_elem;
2863
2864 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2865 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2866 (sizeof(struct scatterlist) * (num_elem - 1)),
2867 GFP_KERNEL);
2868
2869 if (sglist == NULL) {
2870 ipr_trace;
2871 return NULL;
2872 }
2873
1da177e4
LT		 2874 scatterlist = sglist->scatterlist;
2875
2876 sglist->order = order;
2877 sglist->num_sg = num_elem;
2878
2879 /* Allocate a bunch of sg elements */
2880 for (i = 0; i < num_elem; i++) {
2881 page = alloc_pages(GFP_KERNEL, order);
2882 if (!page) {
2883 ipr_trace;
2884
2885 /* Free up what we already allocated */
2886 for (j = i - 1; j >= 0; j--)
2887 __free_pages(scatterlist[j].page, order);
2888 kfree(sglist);
2889 return NULL;
2890 }
2891
2892 scatterlist[i].page = page;
2893 }
2894
2895 return sglist;
2896}
2897
2898/**
2899 * ipr_free_ucode_buffer - Frees a microcode download buffer
2900 * @p_dnld: scatter/gather list pointer
2901 *
2902 * Free a DMA'able ucode download buffer previously allocated with
2903 * ipr_alloc_ucode_buffer
2904 *
2905 * Return value:
2906 * nothing
2907 **/
2908static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2909{
2910 int i;
2911
2912 for (i = 0; i < sglist->num_sg; i++)
2913 __free_pages(sglist->scatterlist[i].page, sglist->order);
2914
2915 kfree(sglist);
2916}
2917
2918/**
2919 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2920 * @sglist: scatter/gather list pointer
2921 * @buffer: buffer pointer
2922 * @len: buffer length
2923 *
2924 * Copy a microcode image from a user buffer into a buffer allocated by
2925 * ipr_alloc_ucode_buffer
2926 *
2927 * Return value:
2928 * 0 on success / other on failure
2929 **/
2930static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2931 u8 *buffer, u32 len)
2932{
2933 int bsize_elem, i, result = 0;
2934 struct scatterlist *scatterlist;
2935 void *kaddr;
2936
2937 /* Determine the actual number of bytes per element */
2938 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2939
2940 scatterlist = sglist->scatterlist;
2941
2942 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2943 kaddr = kmap(scatterlist[i].page);
2944 memcpy(kaddr, buffer, bsize_elem);
2945 kunmap(scatterlist[i].page);
2946
2947 scatterlist[i].length = bsize_elem;
2948
2949 if (result != 0) {
2950 ipr_trace;
2951 return result;
2952 }
2953 }
2954
2955 if (len % bsize_elem) {
2956 kaddr = kmap(scatterlist[i].page);
2957 memcpy(kaddr, buffer, len % bsize_elem);
2958 kunmap(scatterlist[i].page);
2959
2960 scatterlist[i].length = len % bsize_elem;
2961 }
2962
2963 sglist->buffer_len = len;
2964 return result;
2965}
2966
2967/**
12baa420 2968 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2969 * @ipr_cmd: ipr command struct
2970 * @sglist: scatter/gather list
1da177e4 2971 *
12baa420 2972 * Builds a microcode download IOA data list (IOADL).
1da177e4 2973 *
1da177e4 2974 **/
12baa420
BK		 2975static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2976 struct ipr_sglist *sglist)
1da177e4 2977{
1da177e4
LT		 2978 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2979 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2980 struct scatterlist *scatterlist = sglist->scatterlist;
2981 int i;
2982
12baa420 2983 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 2984 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 2985 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 2986 ioarcb->write_ioadl_len =
2987 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2988
2989 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2990 ioadl[i].flags_and_data_len =
2991 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2992 ioadl[i].address =
2993 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2994 }
2995
12baa420
BK		 2996 ioadl[i-1].flags_and_data_len |=
2997 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2998}
2999
3000/**
3001 * ipr_update_ioa_ucode - Update IOA's microcode
3002 * @ioa_cfg: ioa config struct
3003 * @sglist: scatter/gather list
3004 *
3005 * Initiate an adapter reset to update the IOA's microcode
3006 *
3007 * Return value:
3008 * 0 on success / -EIO on failure
3009 **/
3010static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3011 struct ipr_sglist *sglist)
3012{
3013 unsigned long lock_flags;
3014
3015 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3016 while(ioa_cfg->in_reset_reload) {
3017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3018 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3019 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3020 }
12baa420
BK		 3021
3022 if (ioa_cfg->ucode_sglist) {
3023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3024 dev_err(&ioa_cfg->pdev->dev,
3025 "Microcode download already in progress\n");
3026 return -EIO;
1da177e4 3027 }
12baa420
BK		 3028
3029 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3030 sglist->num_sg, DMA_TO_DEVICE);
3031
3032 if (!sglist->num_dma_sg) {
3033 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3034 dev_err(&ioa_cfg->pdev->dev,
3035 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3036 return -EIO;
3037 }
3038
12baa420
BK		 3039 ioa_cfg->ucode_sglist = sglist;
3040 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3042 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3043
3044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3045 ioa_cfg->ucode_sglist = NULL;
3046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3047 return 0;
3048}
3049
3050/**
3051 * ipr_store_update_fw - Update the firmware on the adapter
3052 * @class_dev: class_device struct
3053 * @buf: buffer
3054 * @count: buffer size
3055 *
3056 * This function will update the firmware on the adapter.
3057 *
3058 * Return value:
3059 * count on success / other on failure
3060 **/
3061static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3062 const char *buf, size_t count)
3063{
3064 struct Scsi_Host *shost = class_to_shost(class_dev);
3065 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3066 struct ipr_ucode_image_header *image_hdr;
3067 const struct firmware *fw_entry;
3068 struct ipr_sglist *sglist;
1da177e4
LT		 3069 char fname[100];
3070 char *src;
3071 int len, result, dnld_size;
3072
3073 if (!capable(CAP_SYS_ADMIN))
3074 return -EACCES;
3075
3076 len = snprintf(fname, 99, "%s", buf);
3077 fname[len-1] = '\0';
3078
3079 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3080 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3081 return -EIO;
3082 }
3083
3084 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3085
3086 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3087 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3088 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3089 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3090 release_firmware(fw_entry);
3091 return -EINVAL;
3092 }
3093
3094 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3095 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3096 sglist = ipr_alloc_ucode_buffer(dnld_size);
3097
3098 if (!sglist) {
3099 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3100 release_firmware(fw_entry);
3101 return -ENOMEM;
3102 }
3103
3104 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3105
3106 if (result) {
3107 dev_err(&ioa_cfg->pdev->dev,
3108 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3109 goto out;
1da177e4
LT		 3110 }
3111
12baa420 3112 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3113
12baa420
BK		 3114 if (!result)
3115 result = count;
3116out:
1da177e4
LT		 3117 ipr_free_ucode_buffer(sglist);
3118 release_firmware(fw_entry);
12baa420 3119 return result;
1da177e4
LT		 3120}
3121
3122static struct class_device_attribute ipr_update_fw_attr = {
3123 .attr = {
3124 .name = "update_fw",
3125 .mode = S_IWUSR,
3126 },
3127 .store = ipr_store_update_fw
3128};
3129
3130static struct class_device_attribute *ipr_ioa_attrs[] = {
3131 &ipr_fw_version_attr,
3132 &ipr_log_level_attr,
3133 &ipr_diagnostics_attr,
f37eb54b 3134 &ipr_ioa_state_attr,
1da177e4
LT		 3135 &ipr_ioa_reset_attr,
3136 &ipr_update_fw_attr,
62275040 3137 &ipr_ioa_cache_attr,
1da177e4
LT		 3138 NULL,
3139};
3140
3141#ifdef CONFIG_SCSI_IPR_DUMP
3142/**
3143 * ipr_read_dump - Dump the adapter
3144 * @kobj: kobject struct
91a69029 3145 * @bin_attr: bin_attribute struct
1da177e4
LT		 3146 * @buf: buffer
3147 * @off: offset
3148 * @count: buffer size
3149 *
3150 * Return value:
3151 * number of bytes printed to buffer
3152 **/
91a69029
ZR		 3153static ssize_t ipr_read_dump(struct kobject *kobj,
3154 struct bin_attribute *bin_attr,
3155 char *buf, loff_t off, size_t count)
1da177e4
LT		 3156{
3157 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3158 struct Scsi_Host *shost = class_to_shost(cdev);
3159 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3160 struct ipr_dump *dump;
3161 unsigned long lock_flags = 0;
3162 char *src;
3163 int len;
3164 size_t rc = count;
3165
3166 if (!capable(CAP_SYS_ADMIN))
3167 return -EACCES;
3168
3169 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3170 dump = ioa_cfg->dump;
3171
3172 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3174 return 0;
3175 }
3176 kref_get(&dump->kref);
3177 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3178
3179 if (off > dump->driver_dump.hdr.len) {
3180 kref_put(&dump->kref, ipr_release_dump);
3181 return 0;
3182 }
3183
3184 if (off + count > dump->driver_dump.hdr.len) {
3185 count = dump->driver_dump.hdr.len - off;
3186 rc = count;
3187 }
3188
3189 if (count && off < sizeof(dump->driver_dump)) {
3190 if (off + count > sizeof(dump->driver_dump))
3191 len = sizeof(dump->driver_dump) - off;
3192 else
3193 len = count;
3194 src = (u8 *)&dump->driver_dump + off;
3195 memcpy(buf, src, len);
3196 buf += len;
3197 off += len;
3198 count -= len;
3199 }
3200
3201 off -= sizeof(dump->driver_dump);
3202
3203 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3204 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3205 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3206 else
3207 len = count;
3208 src = (u8 *)&dump->ioa_dump + off;
3209 memcpy(buf, src, len);
3210 buf += len;
3211 off += len;
3212 count -= len;
3213 }
3214
3215 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3216
3217 while (count) {
3218 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3219 len = PAGE_ALIGN(off) - off;
3220 else
3221 len = count;
3222 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3223 src += off & ~PAGE_MASK;
3224 memcpy(buf, src, len);
3225 buf += len;
3226 off += len;
3227 count -= len;
3228 }
3229
3230 kref_put(&dump->kref, ipr_release_dump);
3231 return rc;
3232}
3233
3234/**
3235 * ipr_alloc_dump - Prepare for adapter dump
3236 * @ioa_cfg: ioa config struct
3237 *
3238 * Return value:
3239 * 0 on success / other on failure
3240 **/
3241static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3242{
3243 struct ipr_dump *dump;
3244 unsigned long lock_flags = 0;
3245
0bc42e35 3246 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3247
3248 if (!dump) {
3249 ipr_err("Dump memory allocation failed\n");
3250 return -ENOMEM;
3251 }
3252
1da177e4
LT		 3253 kref_init(&dump->kref);
3254 dump->ioa_cfg = ioa_cfg;
3255
3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3257
3258 if (INACTIVE != ioa_cfg->sdt_state) {
3259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3260 kfree(dump);
3261 return 0;
3262 }
3263
3264 ioa_cfg->dump = dump;
3265 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3266 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3267 ioa_cfg->dump_taken = 1;
3268 schedule_work(&ioa_cfg->work_q);
3269 }
3270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3271
1da177e4
LT		 3272 return 0;
3273}
3274
3275/**
3276 * ipr_free_dump - Free adapter dump memory
3277 * @ioa_cfg: ioa config struct
3278 *
3279 * Return value:
3280 * 0 on success / other on failure
3281 **/
3282static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3283{
3284 struct ipr_dump *dump;
3285 unsigned long lock_flags = 0;
3286
3287 ENTER;
3288
3289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3290 dump = ioa_cfg->dump;
3291 if (!dump) {
3292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3293 return 0;
3294 }
3295
3296 ioa_cfg->dump = NULL;
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298
3299 kref_put(&dump->kref, ipr_release_dump);
3300
3301 LEAVE;
3302 return 0;
3303}
3304
3305/**
3306 * ipr_write_dump - Setup dump state of adapter
3307 * @kobj: kobject struct
91a69029 3308 * @bin_attr: bin_attribute struct
1da177e4
LT		 3309 * @buf: buffer
3310 * @off: offset
3311 * @count: buffer size
3312 *
3313 * Return value:
3314 * number of bytes printed to buffer
3315 **/
91a69029
ZR		 3316static ssize_t ipr_write_dump(struct kobject *kobj,
3317 struct bin_attribute *bin_attr,
3318 char *buf, loff_t off, size_t count)
1da177e4
LT		 3319{
3320 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3321 struct Scsi_Host *shost = class_to_shost(cdev);
3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3323 int rc;
3324
3325 if (!capable(CAP_SYS_ADMIN))
3326 return -EACCES;
3327
3328 if (buf[0] == '1')
3329 rc = ipr_alloc_dump(ioa_cfg);
3330 else if (buf[0] == '0')
3331 rc = ipr_free_dump(ioa_cfg);
3332 else
3333 return -EINVAL;
3334
3335 if (rc)
3336 return rc;
3337 else
3338 return count;
3339}
3340
3341static struct bin_attribute ipr_dump_attr = {
3342 .attr = {
3343 .name = "dump",
3344 .mode = S_IRUSR | S_IWUSR,
3345 },
3346 .size = 0,
3347 .read = ipr_read_dump,
3348 .write = ipr_write_dump
3349};
3350#else
3351static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3352#endif
3353
3354/**
3355 * ipr_change_queue_depth - Change the device's queue depth
3356 * @sdev: scsi device struct
3357 * @qdepth: depth to set
3358 *
3359 * Return value:
3360 * actual depth set
3361 **/
3362static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3363{
35a39691
BK		 3364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3365 struct ipr_resource_entry *res;
3366 unsigned long lock_flags = 0;
3367
3368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3369 res = (struct ipr_resource_entry *)sdev->hostdata;
3370
3371 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3372 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3373 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3374
1da177e4
LT		 3375 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3376 return sdev->queue_depth;
3377}
3378
3379/**
3380 * ipr_change_queue_type - Change the device's queue type
3381 * @dsev: scsi device struct
3382 * @tag_type: type of tags to use
3383 *
3384 * Return value:
3385 * actual queue type set
3386 **/
3387static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3388{
3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3390 struct ipr_resource_entry *res;
3391 unsigned long lock_flags = 0;
3392
3393 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3394 res = (struct ipr_resource_entry *)sdev->hostdata;
3395
3396 if (res) {
3397 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3398 /*
3399 * We don't bother quiescing the device here since the
3400 * adapter firmware does it for us.
3401 */
3402 scsi_set_tag_type(sdev, tag_type);
3403
3404 if (tag_type)
3405 scsi_activate_tcq(sdev, sdev->queue_depth);
3406 else
3407 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3408 } else
3409 tag_type = 0;
3410 } else
3411 tag_type = 0;
3412
3413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3414 return tag_type;
3415}
3416
3417/**
3418 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3419 * @dev: device struct
3420 * @buf: buffer
3421 *
3422 * Return value:
3423 * number of bytes printed to buffer
3424 **/
10523b3b 3425static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3426{
3427 struct scsi_device *sdev = to_scsi_device(dev);
3428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3429 struct ipr_resource_entry *res;
3430 unsigned long lock_flags = 0;
3431 ssize_t len = -ENXIO;
3432
3433 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3434 res = (struct ipr_resource_entry *)sdev->hostdata;
3435 if (res)
3436 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3437 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3438 return len;
3439}
3440
3441static struct device_attribute ipr_adapter_handle_attr = {
3442 .attr = {
3443 .name = "adapter_handle",
3444 .mode = S_IRUSR,
3445 },
3446 .show = ipr_show_adapter_handle
3447};
3448
3449static struct device_attribute *ipr_dev_attrs[] = {
3450 &ipr_adapter_handle_attr,
3451 NULL,
3452};
3453
3454/**
3455 * ipr_biosparam - Return the HSC mapping
3456 * @sdev: scsi device struct
3457 * @block_device: block device pointer
3458 * @capacity: capacity of the device
3459 * @parm: Array containing returned HSC values.
3460 *
3461 * This function generates the HSC parms that fdisk uses.
3462 * We want to make sure we return something that places partitions
3463 * on 4k boundaries for best performance with the IOA.
3464 *
3465 * Return value:
3466 * 0 on success
3467 **/
3468static int ipr_biosparam(struct scsi_device *sdev,
3469 struct block_device *block_device,
3470 sector_t capacity, int *parm)
3471{
3472 int heads, sectors;
3473 sector_t cylinders;
3474
3475 heads = 128;
3476 sectors = 32;
3477
3478 cylinders = capacity;
3479 sector_div(cylinders, (128 * 32));
3480
3481 /* return result */
3482 parm[0] = heads;
3483 parm[1] = sectors;
3484 parm[2] = cylinders;
3485
3486 return 0;
3487}
3488
35a39691
BK		 3489/**
3490 * ipr_find_starget - Find target based on bus/target.
3491 * @starget: scsi target struct
3492 *
3493 * Return value:
3494 * resource entry pointer if found / NULL if not found
3495 **/
3496static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3497{
3498 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3499 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3500 struct ipr_resource_entry *res;
3501
3502 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3503 if ((res->cfgte.res_addr.bus == starget->channel) &&
3504 (res->cfgte.res_addr.target == starget->id) &&
3505 (res->cfgte.res_addr.lun == 0)) {
3506 return res;
3507 }
3508 }
3509
3510 return NULL;
3511}
3512
3513static struct ata_port_info sata_port_info;
3514
3515/**
3516 * ipr_target_alloc - Prepare for commands to a SCSI target
3517 * @starget: scsi target struct
3518 *
3519 * If the device is a SATA device, this function allocates an
3520 * ATA port with libata, else it does nothing.
3521 *
3522 * Return value:
3523 * 0 on success / non-0 on failure
3524 **/
3525static int ipr_target_alloc(struct scsi_target *starget)
3526{
3527 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3529 struct ipr_sata_port *sata_port;
3530 struct ata_port *ap;
3531 struct ipr_resource_entry *res;
3532 unsigned long lock_flags;
3533
3534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3535 res = ipr_find_starget(starget);
3536 starget->hostdata = NULL;
3537
3538 if (res && ipr_is_gata(res)) {
3539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3540 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3541 if (!sata_port)
3542 return -ENOMEM;
3543
3544 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3545 if (ap) {
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 sata_port->ioa_cfg = ioa_cfg;
3548 sata_port->ap = ap;
3549 sata_port->res = res;
3550
3551 res->sata_port = sata_port;
3552 ap->private_data = sata_port;
3553 starget->hostdata = sata_port;
3554 } else {
3555 kfree(sata_port);
3556 return -ENOMEM;
3557 }
3558 }
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560
3561 return 0;
3562}
3563
3564/**
3565 * ipr_target_destroy - Destroy a SCSI target
3566 * @starget: scsi target struct
3567 *
3568 * If the device was a SATA device, this function frees the libata
3569 * ATA port, else it does nothing.
3570 *
3571 **/
3572static void ipr_target_destroy(struct scsi_target *starget)
3573{
3574 struct ipr_sata_port *sata_port = starget->hostdata;
3575
3576 if (sata_port) {
3577 starget->hostdata = NULL;
3578 ata_sas_port_destroy(sata_port->ap);
3579 kfree(sata_port);
3580 }
3581}
3582
3583/**
3584 * ipr_find_sdev - Find device based on bus/target/lun.
3585 * @sdev: scsi device struct
3586 *
3587 * Return value:
3588 * resource entry pointer if found / NULL if not found
3589 **/
3590static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3591{
3592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3593 struct ipr_resource_entry *res;
3594
3595 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3596 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3597 (res->cfgte.res_addr.target == sdev->id) &&
3598 (res->cfgte.res_addr.lun == sdev->lun))
3599 return res;
3600 }
3601
3602 return NULL;
3603}
3604
1da177e4
LT		 3605/**
3606 * ipr_slave_destroy - Unconfigure a SCSI device
3607 * @sdev: scsi device struct
3608 *
3609 * Return value:
3610 * nothing
3611 **/
3612static void ipr_slave_destroy(struct scsi_device *sdev)
3613{
3614 struct ipr_resource_entry *res;
3615 struct ipr_ioa_cfg *ioa_cfg;
3616 unsigned long lock_flags = 0;
3617
3618 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3619
3620 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3621 res = (struct ipr_resource_entry *) sdev->hostdata;
3622 if (res) {
35a39691
BK		 3623 if (res->sata_port)
3624 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3625 sdev->hostdata = NULL;
3626 res->sdev = NULL;
35a39691 3627 res->sata_port = NULL;
1da177e4
LT		 3628 }
3629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3630}
3631
3632/**
3633 * ipr_slave_configure - Configure a SCSI device
3634 * @sdev: scsi device struct
3635 *
3636 * This function configures the specified scsi device.
3637 *
3638 * Return value:
3639 * 0 on success
3640 **/
3641static int ipr_slave_configure(struct scsi_device *sdev)
3642{
3643 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3644 struct ipr_resource_entry *res;
3645 unsigned long lock_flags = 0;
3646
3647 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3648 res = sdev->hostdata;
3649 if (res) {
3650 if (ipr_is_af_dasd_device(res))
3651 sdev->type = TYPE_RAID;
0726ce26 3652 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3653 sdev->scsi_level = 4;
0726ce26
BK		 3654 sdev->no_uld_attach = 1;
3655 }
1da177e4
LT		 3656 if (ipr_is_vset_device(res)) {
3657 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3658 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3659 }
e4fbf44e 3660 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3661 sdev->allow_restart = 1;
35a39691
BK		 3662 if (ipr_is_gata(res) && res->sata_port) {
3663 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3664 ata_sas_slave_configure(sdev, res->sata_port->ap);
3665 } else {
3666 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3667 }
1da177e4
LT		 3668 }
3669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3670 return 0;
3671}
3672
35a39691
BK		 3673/**
3674 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3675 * @sdev: scsi device struct
3676 *
3677 * This function initializes an ATA port so that future commands
3678 * sent through queuecommand will work.
3679 *
3680 * Return value:
3681 * 0 on success
3682 **/
3683static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3684{
3685 struct ipr_sata_port *sata_port = NULL;
3686 int rc = -ENXIO;
3687
3688 ENTER;
3689 if (sdev->sdev_target)
3690 sata_port = sdev->sdev_target->hostdata;
3691 if (sata_port)
3692 rc = ata_sas_port_init(sata_port->ap);
3693 if (rc)
3694 ipr_slave_destroy(sdev);
3695
3696 LEAVE;
3697 return rc;
3698}
3699
1da177e4
LT		 3700/**
3701 * ipr_slave_alloc - Prepare for commands to a device.
3702 * @sdev: scsi device struct
3703 *
3704 * This function saves a pointer to the resource entry
3705 * in the scsi device struct if the device exists. We
3706 * can then use this pointer in ipr_queuecommand when
3707 * handling new commands.
3708 *
3709 * Return value:
692aebfc 3710 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3711 **/
3712static int ipr_slave_alloc(struct scsi_device *sdev)
3713{
3714 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3715 struct ipr_resource_entry *res;
3716 unsigned long lock_flags;
692aebfc 3717 int rc = -ENXIO;
1da177e4
LT		 3718
3719 sdev->hostdata = NULL;
3720
3721 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3722
35a39691
BK		 3723 res = ipr_find_sdev(sdev);
3724 if (res) {
3725 res->sdev = sdev;
3726 res->add_to_ml = 0;
3727 res->in_erp = 0;
3728 sdev->hostdata = res;
3729 if (!ipr_is_naca_model(res))
3730 res->needs_sync_complete = 1;
3731 rc = 0;
3732 if (ipr_is_gata(res)) {
3733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3734 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3735 }
3736 }
3737
3738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3739
692aebfc 3740 return rc;
1da177e4
LT		 3741}
3742
3743/**
3744 * ipr_eh_host_reset - Reset the host adapter
3745 * @scsi_cmd: scsi command struct
3746 *
3747 * Return value:
3748 * SUCCESS / FAILED
3749 **/
df0ae249 3750static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3751{
3752 struct ipr_ioa_cfg *ioa_cfg;
3753 int rc;
3754
3755 ENTER;
3756 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3757
3758 dev_err(&ioa_cfg->pdev->dev,
3759 "Adapter being reset as a result of error recovery.\n");
3760
3761 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3762 ioa_cfg->sdt_state = GET_DUMP;
3763
3764 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3765
3766 LEAVE;
3767 return rc;
3768}
3769
df0ae249
JG		 3770static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3771{
3772 int rc;
3773
3774 spin_lock_irq(cmd->device->host->host_lock);
3775 rc = __ipr_eh_host_reset(cmd);
3776 spin_unlock_irq(cmd->device->host->host_lock);
3777
3778 return rc;
3779}
3780
c6513096
BK		 3781/**
3782 * ipr_device_reset - Reset the device
3783 * @ioa_cfg: ioa config struct
3784 * @res: resource entry struct
3785 *
3786 * This function issues a device reset to the affected device.
3787 * If the device is a SCSI device, a LUN reset will be sent
3788 * to the device first. If that does not work, a target reset
35a39691
BK		 3789 * will be sent. If the device is a SATA device, a PHY reset will
3790 * be sent.
c6513096
BK		 3791 *
3792 * Return value:
3793 * 0 on success / non-zero on failure
3794 **/
3795static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3796 struct ipr_resource_entry *res)
3797{
3798 struct ipr_cmnd *ipr_cmd;
3799 struct ipr_ioarcb *ioarcb;
3800 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3801 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3802 u32 ioasc;
3803
3804 ENTER;
3805 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3806 ioarcb = &ipr_cmd->ioarcb;
3807 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3808 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3809
3810 ioarcb->res_handle = res->cfgte.res_handle;
3811 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3812 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3813 if (ipr_is_gata(res)) {
3814 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3815 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3816 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3817 }
c6513096
BK		 3818
3819 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3820 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3821 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3822 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3823 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3824 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3825
3826 LEAVE;
3827 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3828}
3829
35a39691
BK		 3830/**
3831 * ipr_sata_reset - Reset the SATA port
cc0680a5 3832 * @link: SATA link to reset
35a39691
BK		 3833 * @classes: class of the attached device
3834 *
cc0680a5 3835 * This function issues a SATA phy reset to the affected ATA link.
35a39691
BK		 3836 *
3837 * Return value:
3838 * 0 on success / non-zero on failure
3839 **/
cc0680a5 3840static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
120bda35 3841 unsigned long deadline)
35a39691 3842{
cc0680a5 3843 struct ipr_sata_port *sata_port = link->ap->private_data;
35a39691
BK		 3844 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3845 struct ipr_resource_entry *res;
3846 unsigned long lock_flags = 0;
3847 int rc = -ENXIO;
3848
3849 ENTER;
3850 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3851 while(ioa_cfg->in_reset_reload) {
3852 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3853 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3854 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3855 }
3856
35a39691
BK		 3857 res = sata_port->res;
3858 if (res) {
3859 rc = ipr_device_reset(ioa_cfg, res);
3860 switch(res->cfgte.proto) {
3861 case IPR_PROTO_SATA:
3862 case IPR_PROTO_SAS_STP:
3863 *classes = ATA_DEV_ATA;
3864 break;
3865 case IPR_PROTO_SATA_ATAPI:
3866 case IPR_PROTO_SAS_STP_ATAPI:
3867 *classes = ATA_DEV_ATAPI;
3868 break;
3869 default:
3870 *classes = ATA_DEV_UNKNOWN;
3871 break;
3872 };
3873 }
3874
3875 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3876 LEAVE;
3877 return rc;
3878}
3879
1da177e4
LT		 3880/**
3881 * ipr_eh_dev_reset - Reset the device
3882 * @scsi_cmd: scsi command struct
3883 *
3884 * This function issues a device reset to the affected device.
3885 * A LUN reset will be sent to the device first. If that does
3886 * not work, a target reset will be sent.
3887 *
3888 * Return value:
3889 * SUCCESS / FAILED
3890 **/
94d0e7b8 3891static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3892{
3893 struct ipr_cmnd *ipr_cmd;
3894 struct ipr_ioa_cfg *ioa_cfg;
3895 struct ipr_resource_entry *res;
35a39691
BK		 3896 struct ata_port *ap;
3897 int rc = 0;
1da177e4
LT		 3898
3899 ENTER;
3900 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3901 res = scsi_cmd->device->hostdata;
3902
eeb88307 3903 if (!res)
1da177e4
LT		 3904 return FAILED;
3905
3906 /*
3907 * If we are currently going through reset/reload, return failed. This will force the
3908 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3909 * reset to complete
3910 */
3911 if (ioa_cfg->in_reset_reload)
3912 return FAILED;
3913 if (ioa_cfg->ioa_is_dead)
3914 return FAILED;
3915
3916 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3917 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3918 if (ipr_cmd->scsi_cmd)
3919 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3920 if (ipr_cmd->qc)
3921 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3922 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3923 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3924 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3925 }
1da177e4
LT		 3926 }
3927 }
3928
3929 res->resetting_device = 1;
fb3ed3cb 3930 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3931
3932 if (ipr_is_gata(res) && res->sata_port) {
3933 ap = res->sata_port->ap;
3934 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3935 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3936 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3937
3938 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3939 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3940 rc = -EIO;
3941 break;
3942 }
3943 }
35a39691
BK		 3944 } else
3945 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3946 res->resetting_device = 0;
3947
1da177e4 3948 LEAVE;
c6513096 3949 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3950}
3951
94d0e7b8
JG		 3952static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3953{
3954 int rc;
3955
3956 spin_lock_irq(cmd->device->host->host_lock);
3957 rc = __ipr_eh_dev_reset(cmd);
3958 spin_unlock_irq(cmd->device->host->host_lock);
3959
3960 return rc;
3961}
3962
1da177e4
LT		 3963/**
3964 * ipr_bus_reset_done - Op done function for bus reset.
3965 * @ipr_cmd: ipr command struct
3966 *
3967 * This function is the op done function for a bus reset
3968 *
3969 * Return value:
3970 * none
3971 **/
3972static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3973{
3974 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3975 struct ipr_resource_entry *res;
3976
3977 ENTER;
3978 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3979 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3980 sizeof(res->cfgte.res_handle))) {
3981 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3982 break;
3983 }
3984 }
3985
3986 /*
3987 * If abort has not completed, indicate the reset has, else call the
3988 * abort's done function to wake the sleeping eh thread
3989 */
3990 if (ipr_cmd->sibling->sibling)
3991 ipr_cmd->sibling->sibling = NULL;
3992 else
3993 ipr_cmd->sibling->done(ipr_cmd->sibling);
3994
3995 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3996 LEAVE;
3997}
3998
3999/**
4000 * ipr_abort_timeout - An abort task has timed out
4001 * @ipr_cmd: ipr command struct
4002 *
4003 * This function handles when an abort task times out. If this
4004 * happens we issue a bus reset since we have resources tied
4005 * up that must be freed before returning to the midlayer.
4006 *
4007 * Return value:
4008 * none
4009 **/
4010static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4011{
4012 struct ipr_cmnd *reset_cmd;
4013 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4014 struct ipr_cmd_pkt *cmd_pkt;
4015 unsigned long lock_flags = 0;
4016
4017 ENTER;
4018 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4019 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4021 return;
4022 }
4023
fb3ed3cb 4024 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4025 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4026 ipr_cmd->sibling = reset_cmd;
4027 reset_cmd->sibling = ipr_cmd;
4028 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4029 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4030 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4031 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4032 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4033
4034 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4036 LEAVE;
4037}
4038
4039/**
4040 * ipr_cancel_op - Cancel specified op
4041 * @scsi_cmd: scsi command struct
4042 *
4043 * This function cancels specified op.
4044 *
4045 * Return value:
4046 * SUCCESS / FAILED
4047 **/
4048static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4049{
4050 struct ipr_cmnd *ipr_cmd;
4051 struct ipr_ioa_cfg *ioa_cfg;
4052 struct ipr_resource_entry *res;
4053 struct ipr_cmd_pkt *cmd_pkt;
4054 u32 ioasc;
4055 int op_found = 0;
4056
4057 ENTER;
4058 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4059 res = scsi_cmd->device->hostdata;
4060
8fa728a2
JG		 4061 /* If we are currently going through reset/reload, return failed.
4062 * This will force the mid-layer to call ipr_eh_host_reset,
4063 * which will then go to sleep and wait for the reset to complete
4064 */
4065 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4066 return FAILED;
04d9768f 4067 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4068 return FAILED;
4069
4070 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4071 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4072 ipr_cmd->done = ipr_scsi_eh_done;
4073 op_found = 1;
4074 break;
4075 }
4076 }
4077
4078 if (!op_found)
4079 return SUCCESS;
4080
4081 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4082 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4083 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4084 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4085 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4086 ipr_cmd->u.sdev = scsi_cmd->device;
4087
fb3ed3cb
BK		 4088 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4089 scsi_cmd->cmnd[0]);
1da177e4
LT		 4090 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4091 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4092
4093 /*
4094 * If the abort task timed out and we sent a bus reset, we will get
4095 * one the following responses to the abort
4096 */
4097 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4098 ioasc = 0;
4099 ipr_trace;
4100 }
4101
4102 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4103 if (!ipr_is_naca_model(res))
4104 res->needs_sync_complete = 1;
1da177e4
LT		 4105
4106 LEAVE;
4107 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4108}
4109
4110/**
4111 * ipr_eh_abort - Abort a single op
4112 * @scsi_cmd: scsi command struct
4113 *
4114 * Return value:
4115 * SUCCESS / FAILED
4116 **/
4117static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4118{
8fa728a2
JG		 4119 unsigned long flags;
4120 int rc;
1da177e4
LT		 4121
4122 ENTER;
1da177e4 4123
8fa728a2
JG		 4124 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4125 rc = ipr_cancel_op(scsi_cmd);
4126 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4127
4128 LEAVE;
8fa728a2 4129 return rc;
1da177e4
LT		 4130}
4131
4132/**
4133 * ipr_handle_other_interrupt - Handle "other" interrupts
4134 * @ioa_cfg: ioa config struct
4135 * @int_reg: interrupt register
4136 *
4137 * Return value:
4138 * IRQ_NONE / IRQ_HANDLED
4139 **/
4140static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4141 volatile u32 int_reg)
4142{
4143 irqreturn_t rc = IRQ_HANDLED;
4144
4145 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4146 /* Mask the interrupt */
4147 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4148
4149 /* Clear the interrupt */
4150 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4151 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4152
4153 list_del(&ioa_cfg->reset_cmd->queue);
4154 del_timer(&ioa_cfg->reset_cmd->timer);
4155 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4156 } else {
4157 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4158 ioa_cfg->ioa_unit_checked = 1;
4159 else
4160 dev_err(&ioa_cfg->pdev->dev,
4161 "Permanent IOA failure. 0x%08X\n", int_reg);
4162
4163 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4164 ioa_cfg->sdt_state = GET_DUMP;
4165
4166 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4167 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4168 }
4169
4170 return rc;
4171}
4172
4173/**
4174 * ipr_isr - Interrupt service routine
4175 * @irq: irq number
4176 * @devp: pointer to ioa config struct
1da177e4
LT		 4177 *
4178 * Return value:
4179 * IRQ_NONE / IRQ_HANDLED
4180 **/
7d12e780 4181static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4182{
4183 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4184 unsigned long lock_flags = 0;
4185 volatile u32 int_reg, int_mask_reg;
4186 u32 ioasc;
4187 u16 cmd_index;
4188 struct ipr_cmnd *ipr_cmd;
4189 irqreturn_t rc = IRQ_NONE;
4190
4191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4192
4193 /* If interrupts are disabled, ignore the interrupt */
4194 if (!ioa_cfg->allow_interrupts) {
4195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4196 return IRQ_NONE;
4197 }
4198
4199 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4200 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4201
4202 /* If an interrupt on the adapter did not occur, ignore it */
4203 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4205 return IRQ_NONE;
4206 }
4207
4208 while (1) {
4209 ipr_cmd = NULL;
4210
4211 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4212 ioa_cfg->toggle_bit) {
4213
4214 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4215 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4216
4217 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4218 ioa_cfg->errors_logged++;
4219 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4220
4221 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4222 ioa_cfg->sdt_state = GET_DUMP;
4223
4224 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4226 return IRQ_HANDLED;
4227 }
4228
4229 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4230
4231 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4232
4233 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4234
4235 list_del(&ipr_cmd->queue);
4236 del_timer(&ipr_cmd->timer);
4237 ipr_cmd->done(ipr_cmd);
4238
4239 rc = IRQ_HANDLED;
4240
4241 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4242 ioa_cfg->hrrq_curr++;
4243 } else {
4244 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4245 ioa_cfg->toggle_bit ^= 1u;
4246 }
4247 }
4248
4249 if (ipr_cmd != NULL) {
4250 /* Clear the PCI interrupt */
4251 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4252 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4253 } else
4254 break;
4255 }
4256
4257 if (unlikely(rc == IRQ_NONE))
4258 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4259
4260 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4261 return rc;
4262}
4263
4264/**
4265 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4266 * @ioa_cfg: ioa config struct
4267 * @ipr_cmd: ipr command struct
4268 *
4269 * Return value:
4270 * 0 on success / -1 on failure
4271 **/
4272static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4273 struct ipr_cmnd *ipr_cmd)
4274{
63015bc9
FT		 4275 int i, nseg;
4276 struct scatterlist *sg;
1da177e4
LT		 4277 u32 length;
4278 u32 ioadl_flags = 0;
4279 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4280 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4281 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4282
63015bc9
FT		 4283 length = scsi_bufflen(scsi_cmd);
4284 if (!length)
1da177e4
LT		 4285 return 0;
4286
63015bc9
FT		 4287 nseg = scsi_dma_map(scsi_cmd);
4288 if (nseg < 0) {
4289 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4290 return -1;
4291 }
51b1c7e1 4292
63015bc9
FT		 4293 ipr_cmd->dma_use_sg = nseg;
4294
4295 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4296 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4297 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4298 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4299 ioarcb->write_ioadl_len =
4300 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4301 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4302 ioadl_flags = IPR_IOADL_FLAGS_READ;
4303 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4304 ioarcb->read_ioadl_len =
4305 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4306 }
1da177e4 4307
63015bc9
FT		 4308 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4309 ioadl = ioarcb->add_data.u.ioadl;
4310 ioarcb->write_ioadl_addr =
4311 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4312 offsetof(struct ipr_ioarcb, add_data));
4313 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4314 }
1da177e4 4315
63015bc9
FT		 4316 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4317 ioadl[i].flags_and_data_len =
4318 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4319 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
1da177e4
LT		 4320 }
4321
63015bc9
FT		 4322 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4323 return 0;
1da177e4
LT		 4324}
4325
4326/**
4327 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4328 * @scsi_cmd: scsi command struct
4329 *
4330 * Return value:
4331 * task attributes
4332 **/
4333static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4334{
4335 u8 tag[2];
4336 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4337
4338 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4339 switch (tag[0]) {
4340 case MSG_SIMPLE_TAG:
4341 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4342 break;
4343 case MSG_HEAD_TAG:
4344 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4345 break;
4346 case MSG_ORDERED_TAG:
4347 rc = IPR_FLAGS_LO_ORDERED_TASK;
4348 break;
4349 };
4350 }
4351
4352 return rc;
4353}
4354
4355/**
4356 * ipr_erp_done - Process completion of ERP for a device
4357 * @ipr_cmd: ipr command struct
4358 *
4359 * This function copies the sense buffer into the scsi_cmd
4360 * struct and pushes the scsi_done function.
4361 *
4362 * Return value:
4363 * nothing
4364 **/
4365static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4366{
4367 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4368 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4369 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4370 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4371
4372 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4373 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4374 scmd_printk(KERN_ERR, scsi_cmd,
4375 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4376 } else {
4377 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4378 SCSI_SENSE_BUFFERSIZE);
4379 }
4380
4381 if (res) {
ee0a90fa
BK		 4382 if (!ipr_is_naca_model(res))
4383 res->needs_sync_complete = 1;
1da177e4
LT		 4384 res->in_erp = 0;
4385 }
63015bc9 4386 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4387 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4388 scsi_cmd->scsi_done(scsi_cmd);
4389}
4390
4391/**
4392 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4393 * @ipr_cmd: ipr command struct
4394 *
4395 * Return value:
4396 * none
4397 **/
4398static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4399{
51b1c7e1
BK		 4400 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4401 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4402 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4403
4404 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4405 ioarcb->write_data_transfer_length = 0;
4406 ioarcb->read_data_transfer_length = 0;
4407 ioarcb->write_ioadl_len = 0;
4408 ioarcb->read_ioadl_len = 0;
4409 ioasa->ioasc = 0;
4410 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4411 ioarcb->write_ioadl_addr =
4412 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4413 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4414}
4415
4416/**
4417 * ipr_erp_request_sense - Send request sense to a device
4418 * @ipr_cmd: ipr command struct
4419 *
4420 * This function sends a request sense to a device as a result
4421 * of a check condition.
4422 *
4423 * Return value:
4424 * nothing
4425 **/
4426static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4427{
4428 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4429 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4430
4431 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4432 ipr_erp_done(ipr_cmd);
4433 return;
4434 }
4435
4436 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4437
4438 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4439 cmd_pkt->cdb[0] = REQUEST_SENSE;
4440 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4441 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4442 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4443 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4444
4445 ipr_cmd->ioadl[0].flags_and_data_len =
4446 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4447 ipr_cmd->ioadl[0].address =
4448 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4449
4450 ipr_cmd->ioarcb.read_ioadl_len =
4451 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4452 ipr_cmd->ioarcb.read_data_transfer_length =
4453 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4454
4455 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4456 IPR_REQUEST_SENSE_TIMEOUT * 2);
4457}
4458
4459/**
4460 * ipr_erp_cancel_all - Send cancel all to a device
4461 * @ipr_cmd: ipr command struct
4462 *
4463 * This function sends a cancel all to a device to clear the
4464 * queue. If we are running TCQ on the device, QERR is set to 1,
4465 * which means all outstanding ops have been dropped on the floor.
4466 * Cancel all will return them to us.
4467 *
4468 * Return value:
4469 * nothing
4470 **/
4471static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4472{
4473 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4474 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4475 struct ipr_cmd_pkt *cmd_pkt;
4476
4477 res->in_erp = 1;
4478
4479 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4480
4481 if (!scsi_get_tag_type(scsi_cmd->device)) {
4482 ipr_erp_request_sense(ipr_cmd);
4483 return;
4484 }
4485
4486 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4487 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4488 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4489
4490 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4491 IPR_CANCEL_ALL_TIMEOUT);
4492}
4493
4494/**
4495 * ipr_dump_ioasa - Dump contents of IOASA
4496 * @ioa_cfg: ioa config struct
4497 * @ipr_cmd: ipr command struct
fe964d0a 4498 * @res: resource entry struct
1da177e4
LT		 4499 *
4500 * This function is invoked by the interrupt handler when ops
4501 * fail. It will log the IOASA if appropriate. Only called
4502 * for GPDD ops.
4503 *
4504 * Return value:
4505 * none
4506 **/
4507static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4508 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4509{
4510 int i;
4511 u16 data_len;
b0692dd4 4512 u32 ioasc, fd_ioasc;
1da177e4
LT		 4513 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4514 __be32 *ioasa_data = (__be32 *)ioasa;
4515 int error_index;
4516
4517 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4518 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4519
4520 if (0 == ioasc)
4521 return;
4522
4523 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4524 return;
4525
b0692dd4
BK		 4526 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4527 error_index = ipr_get_error(fd_ioasc);
4528 else
4529 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4530
4531 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4532 /* Don't log an error if the IOA already logged one */
4533 if (ioasa->ilid != 0)
4534 return;
4535
cc9bd5d4
BK		 4536 if (!ipr_is_gscsi(res))
4537 return;
4538
1da177e4
LT		 4539 if (ipr_error_table[error_index].log_ioasa == 0)
4540 return;
4541 }
4542
fe964d0a 4543 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4544
4545 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4546 data_len = sizeof(struct ipr_ioasa);
4547 else
4548 data_len = be16_to_cpu(ioasa->ret_stat_len);
4549
4550 ipr_err("IOASA Dump:\n");
4551
4552 for (i = 0; i < data_len / 4; i += 4) {
4553 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4554 be32_to_cpu(ioasa_data[i]),
4555 be32_to_cpu(ioasa_data[i+1]),
4556 be32_to_cpu(ioasa_data[i+2]),
4557 be32_to_cpu(ioasa_data[i+3]));
4558 }
4559}
4560
4561/**
4562 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4563 * @ioasa: IOASA
4564 * @sense_buf: sense data buffer
4565 *
4566 * Return value:
4567 * none
4568 **/
4569static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4570{
4571 u32 failing_lba;
4572 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4573 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4574 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4575 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4576
4577 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4578
4579 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4580 return;
4581
4582 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4583
4584 if (ipr_is_vset_device(res) &&
4585 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4586 ioasa->u.vset.failing_lba_hi != 0) {
4587 sense_buf[0] = 0x72;
4588 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4589 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4590 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4591
4592 sense_buf[7] = 12;
4593 sense_buf[8] = 0;
4594 sense_buf[9] = 0x0A;
4595 sense_buf[10] = 0x80;
4596
4597 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4598
4599 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4600 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4601 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4602 sense_buf[15] = failing_lba & 0x000000ff;
4603
4604 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4605
4606 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4607 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4608 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4609 sense_buf[19] = failing_lba & 0x000000ff;
4610 } else {
4611 sense_buf[0] = 0x70;
4612 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4613 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4614 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4615
4616 /* Illegal request */
4617 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4618 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4619 sense_buf[7] = 10; /* additional length */
4620
4621 /* IOARCB was in error */
4622 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4623 sense_buf[15] = 0xC0;
4624 else /* Parameter data was invalid */
4625 sense_buf[15] = 0x80;
4626
4627 sense_buf[16] =
4628 ((IPR_FIELD_POINTER_MASK &
4629 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4630 sense_buf[17] =
4631 (IPR_FIELD_POINTER_MASK &
4632 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4633 } else {
4634 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4635 if (ipr_is_vset_device(res))
4636 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4637 else
4638 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4639
4640 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4641 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4642 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4643 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4644 sense_buf[6] = failing_lba & 0x000000ff;
4645 }
4646
4647 sense_buf[7] = 6; /* additional length */
4648 }
4649 }
4650}
4651
ee0a90fa
BK		 4652/**
4653 * ipr_get_autosense - Copy autosense data to sense buffer
4654 * @ipr_cmd: ipr command struct
4655 *
4656 * This function copies the autosense buffer to the buffer
4657 * in the scsi_cmd, if there is autosense available.
4658 *
4659 * Return value:
4660 * 1 if autosense was available / 0 if not
4661 **/
4662static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4663{
4664 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4665
117d2ce1 4666 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4667 return 0;
4668
4669 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4670 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4671 SCSI_SENSE_BUFFERSIZE));
4672 return 1;
4673}
4674
1da177e4
LT		 4675/**
4676 * ipr_erp_start - Process an error response for a SCSI op
4677 * @ioa_cfg: ioa config struct
4678 * @ipr_cmd: ipr command struct
4679 *
4680 * This function determines whether or not to initiate ERP
4681 * on the affected device.
4682 *
4683 * Return value:
4684 * nothing
4685 **/
4686static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4687 struct ipr_cmnd *ipr_cmd)
4688{
4689 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4690 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4691 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4692 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4693
4694 if (!res) {
4695 ipr_scsi_eh_done(ipr_cmd);
4696 return;
4697 }
4698
8a048994 4699 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4700 ipr_gen_sense(ipr_cmd);
4701
cc9bd5d4
BK		 4702 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4703
8a048994 4704 switch (masked_ioasc) {
1da177e4 4705 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4706 if (ipr_is_naca_model(res))
4707 scsi_cmd->result |= (DID_ABORT << 16);
4708 else
4709 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4710 break;
4711 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4712 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4713 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4714 break;
4715 case IPR_IOASC_HW_SEL_TIMEOUT:
4716 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4717 if (!ipr_is_naca_model(res))
4718 res->needs_sync_complete = 1;
1da177e4
LT		 4719 break;
4720 case IPR_IOASC_SYNC_REQUIRED:
4721 if (!res->in_erp)
4722 res->needs_sync_complete = 1;
4723 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4724 break;
4725 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4726 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4727 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4728 break;
4729 case IPR_IOASC_BUS_WAS_RESET:
4730 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4731 /*
4732 * Report the bus reset and ask for a retry. The device
4733 * will give CC/UA the next command.
4734 */
4735 if (!res->resetting_device)
4736 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4737 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4738 if (!ipr_is_naca_model(res))
4739 res->needs_sync_complete = 1;
1da177e4
LT		 4740 break;
4741 case IPR_IOASC_HW_DEV_BUS_STATUS:
4742 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4743 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4744 if (!ipr_get_autosense(ipr_cmd)) {
4745 if (!ipr_is_naca_model(res)) {
4746 ipr_erp_cancel_all(ipr_cmd);
4747 return;
4748 }
4749 }
1da177e4 4750 }
ee0a90fa
BK		 4751 if (!ipr_is_naca_model(res))
4752 res->needs_sync_complete = 1;
1da177e4
LT		 4753 break;
4754 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4755 break;
4756 default:
5b7304fb
BK		 4757 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4758 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4759 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4760 res->needs_sync_complete = 1;
4761 break;
4762 }
4763
63015bc9 4764 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4765 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4766 scsi_cmd->scsi_done(scsi_cmd);
4767}
4768
4769/**
4770 * ipr_scsi_done - mid-layer done function
4771 * @ipr_cmd: ipr command struct
4772 *
4773 * This function is invoked by the interrupt handler for
4774 * ops generated by the SCSI mid-layer
4775 *
4776 * Return value:
4777 * none
4778 **/
4779static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4780{
4781 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4782 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4783 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4784
63015bc9 4785 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
1da177e4
LT		 4786
4787 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
63015bc9 4788 scsi_dma_unmap(ipr_cmd->scsi_cmd);
1da177e4
LT		 4789 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4790 scsi_cmd->scsi_done(scsi_cmd);
4791 } else
4792 ipr_erp_start(ioa_cfg, ipr_cmd);
4793}
4794
1da177e4
LT		 4795/**
4796 * ipr_queuecommand - Queue a mid-layer request
4797 * @scsi_cmd: scsi command struct
4798 * @done: done function
4799 *
4800 * This function queues a request generated by the mid-layer.
4801 *
4802 * Return value:
4803 * 0 on success
4804 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4805 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4806 **/
4807static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4808 void (*done) (struct scsi_cmnd *))
4809{
4810 struct ipr_ioa_cfg *ioa_cfg;
4811 struct ipr_resource_entry *res;
4812 struct ipr_ioarcb *ioarcb;
4813 struct ipr_cmnd *ipr_cmd;
4814 int rc = 0;
4815
4816 scsi_cmd->scsi_done = done;
4817 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4818 res = scsi_cmd->device->hostdata;
4819 scsi_cmd->result = (DID_OK << 16);
4820
4821 /*
4822 * We are currently blocking all devices due to a host reset
4823 * We have told the host to stop giving us new requests, but
4824 * ERP ops don't count. FIXME
4825 */
4826 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4827 return SCSI_MLQUEUE_HOST_BUSY;
4828
4829 /*
4830 * FIXME - Create scsi_set_host_offline interface
4831 * and the ioa_is_dead check can be removed
4832 */
4833 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4834 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4835 scsi_cmd->result = (DID_NO_CONNECT << 16);
4836 scsi_cmd->scsi_done(scsi_cmd);
4837 return 0;
4838 }
4839
35a39691
BK		 4840 if (ipr_is_gata(res) && res->sata_port)
4841 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4842
1da177e4
LT		 4843 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4844 ioarcb = &ipr_cmd->ioarcb;
4845 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4846
4847 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4848 ipr_cmd->scsi_cmd = scsi_cmd;
4849 ioarcb->res_handle = res->cfgte.res_handle;
4850 ipr_cmd->done = ipr_scsi_done;
4851 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4852
4853 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4854 if (scsi_cmd->underflow == 0)
4855 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4856
4857 if (res->needs_sync_complete) {
4858 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4859 res->needs_sync_complete = 0;
4860 }
4861
4862 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4863 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4864 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4865 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4866 }
4867
4868 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4869 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4870 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4871
1da177e4
LT		 4872 if (likely(rc == 0))
4873 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4874
4875 if (likely(rc == 0)) {
4876 mb();
4877 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4878 ioa_cfg->regs.ioarrin_reg);
4879 } else {
4880 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4881 return SCSI_MLQUEUE_HOST_BUSY;
4882 }
4883
4884 return 0;
4885}
4886
35a39691
BK		 4887/**
4888 * ipr_ioctl - IOCTL handler
4889 * @sdev: scsi device struct
4890 * @cmd: IOCTL cmd
4891 * @arg: IOCTL arg
4892 *
4893 * Return value:
4894 * 0 on success / other on failure
4895 **/
bd705f2d 4896static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4897{
4898 struct ipr_resource_entry *res;
4899
4900 res = (struct ipr_resource_entry *)sdev->hostdata;
4901 if (res && ipr_is_gata(res))
4902 return ata_scsi_ioctl(sdev, cmd, arg);
4903
4904 return -EINVAL;
4905}
4906
1da177e4
LT		 4907/**
4908 * ipr_info - Get information about the card/driver
4909 * @scsi_host: scsi host struct
4910 *
4911 * Return value:
4912 * pointer to buffer with description string
4913 **/
4914static const char * ipr_ioa_info(struct Scsi_Host *host)
4915{
4916 static char buffer[512];
4917 struct ipr_ioa_cfg *ioa_cfg;
4918 unsigned long lock_flags = 0;
4919
4920 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4921
4922 spin_lock_irqsave(host->host_lock, lock_flags);
4923 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4924 spin_unlock_irqrestore(host->host_lock, lock_flags);
4925
4926 return buffer;
4927}
4928
4929static struct scsi_host_template driver_template = {
4930 .module = THIS_MODULE,
4931 .name = "IPR",
4932 .info = ipr_ioa_info,
35a39691 4933 .ioctl = ipr_ioctl,
1da177e4
LT		 4934 .queuecommand = ipr_queuecommand,
4935 .eh_abort_handler = ipr_eh_abort,
4936 .eh_device_reset_handler = ipr_eh_dev_reset,
4937 .eh_host_reset_handler = ipr_eh_host_reset,
4938 .slave_alloc = ipr_slave_alloc,
4939 .slave_configure = ipr_slave_configure,
4940 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4941 .target_alloc = ipr_target_alloc,
4942 .target_destroy = ipr_target_destroy,
1da177e4
LT		 4943 .change_queue_depth = ipr_change_queue_depth,
4944 .change_queue_type = ipr_change_queue_type,
4945 .bios_param = ipr_biosparam,
4946 .can_queue = IPR_MAX_COMMANDS,
4947 .this_id = -1,
4948 .sg_tablesize = IPR_MAX_SGLIST,
4949 .max_sectors = IPR_IOA_MAX_SECTORS,
4950 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4951 .use_clustering = ENABLE_CLUSTERING,
4952 .shost_attrs = ipr_ioa_attrs,
4953 .sdev_attrs = ipr_dev_attrs,
4954 .proc_name = IPR_NAME
4955};
4956
35a39691
BK		 4957/**
4958 * ipr_ata_phy_reset - libata phy_reset handler
4959 * @ap: ata port to reset
4960 *
4961 **/
4962static void ipr_ata_phy_reset(struct ata_port *ap)
4963{
4964 unsigned long flags;
4965 struct ipr_sata_port *sata_port = ap->private_data;
4966 struct ipr_resource_entry *res = sata_port->res;
4967 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4968 int rc;
4969
4970 ENTER;
4971 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4972 while(ioa_cfg->in_reset_reload) {
4973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4974 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4975 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4976 }
4977
4978 if (!ioa_cfg->allow_cmds)
4979 goto out_unlock;
4980
4981 rc = ipr_device_reset(ioa_cfg, res);
4982
4983 if (rc) {
ac8869d5 4984 ata_port_disable(ap);
35a39691
BK		 4985 goto out_unlock;
4986 }
4987
4988 switch(res->cfgte.proto) {
4989 case IPR_PROTO_SATA:
4990 case IPR_PROTO_SAS_STP:
9af5c9c9 4991 ap->link.device[0].class = ATA_DEV_ATA;
35a39691
BK		 4992 break;
4993 case IPR_PROTO_SATA_ATAPI:
4994 case IPR_PROTO_SAS_STP_ATAPI:
9af5c9c9 4995 ap->link.device[0].class = ATA_DEV_ATAPI;
35a39691
BK		 4996 break;
4997 default:
9af5c9c9 4998 ap->link.device[0].class = ATA_DEV_UNKNOWN;
ac8869d5 4999 ata_port_disable(ap);
35a39691
BK		 5000 break;
5001 };
5002
5003out_unlock:
5004 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5005 LEAVE;
5006}
5007
5008/**
5009 * ipr_ata_post_internal - Cleanup after an internal command
5010 * @qc: ATA queued command
5011 *
5012 * Return value:
5013 * none
5014 **/
5015static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5016{
5017 struct ipr_sata_port *sata_port = qc->ap->private_data;
5018 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5019 struct ipr_cmnd *ipr_cmd;
5020 unsigned long flags;
5021
5022 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5023 while(ioa_cfg->in_reset_reload) {
5024 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5025 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5026 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5027 }
5028
35a39691
BK		 5029 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5030 if (ipr_cmd->qc == qc) {
5031 ipr_device_reset(ioa_cfg, sata_port->res);
5032 break;
5033 }
5034 }
5035 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5036}
5037
5038/**
5039 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5040 * @ap: ATA port
5041 * @tf: destination ATA taskfile
5042 *
5043 * Return value:
5044 * none
5045 **/
5046static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5047{
5048 struct ipr_sata_port *sata_port = ap->private_data;
5049 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5050
5051 tf->feature = g->error;
5052 tf->nsect = g->nsect;
5053 tf->lbal = g->lbal;
5054 tf->lbam = g->lbam;
5055 tf->lbah = g->lbah;
5056 tf->device = g->device;
5057 tf->command = g->status;
5058 tf->hob_nsect = g->hob_nsect;
5059 tf->hob_lbal = g->hob_lbal;
5060 tf->hob_lbam = g->hob_lbam;
5061 tf->hob_lbah = g->hob_lbah;
5062 tf->ctl = g->alt_status;
5063}
5064
5065/**
5066 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5067 * @regs: destination
5068 * @tf: source ATA taskfile
5069 *
5070 * Return value:
5071 * none
5072 **/
5073static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5074 struct ata_taskfile *tf)
5075{
5076 regs->feature = tf->feature;
5077 regs->nsect = tf->nsect;
5078 regs->lbal = tf->lbal;
5079 regs->lbam = tf->lbam;
5080 regs->lbah = tf->lbah;
5081 regs->device = tf->device;
5082 regs->command = tf->command;
5083 regs->hob_feature = tf->hob_feature;
5084 regs->hob_nsect = tf->hob_nsect;
5085 regs->hob_lbal = tf->hob_lbal;
5086 regs->hob_lbam = tf->hob_lbam;
5087 regs->hob_lbah = tf->hob_lbah;
5088 regs->ctl = tf->ctl;
5089}
5090
5091/**
5092 * ipr_sata_done - done function for SATA commands
5093 * @ipr_cmd: ipr command struct
5094 *
5095 * This function is invoked by the interrupt handler for
5096 * ops generated by the SCSI mid-layer to SATA devices
5097 *
5098 * Return value:
5099 * none
5100 **/
5101static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5102{
5103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5104 struct ata_queued_cmd *qc = ipr_cmd->qc;
5105 struct ipr_sata_port *sata_port = qc->ap->private_data;
5106 struct ipr_resource_entry *res = sata_port->res;
5107 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5108
5109 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5110 sizeof(struct ipr_ioasa_gata));
5111 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5112
5113 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5114 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5115 res->cfgte.res_addr.target);
5116
5117 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5118 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5119 else
5120 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5121 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5122 ata_qc_complete(qc);
5123}
5124
5125/**
5126 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5127 * @ipr_cmd: ipr command struct
5128 * @qc: ATA queued command
5129 *
5130 **/
5131static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5132 struct ata_queued_cmd *qc)
5133{
5134 u32 ioadl_flags = 0;
5135 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5136 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5137 int len = qc->nbytes + qc->pad_len;
5138 struct scatterlist *sg;
5139
5140 if (len == 0)
5141 return;
5142
5143 if (qc->dma_dir == DMA_TO_DEVICE) {
5144 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5146 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5147 ioarcb->write_ioadl_len =
5148 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5149 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5150 ioadl_flags = IPR_IOADL_FLAGS_READ;
5151 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5152 ioarcb->read_ioadl_len =
5153 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5154 }
5155
5156 ata_for_each_sg(sg, qc) {
5157 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5158 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5159 if (ata_sg_is_last(sg, qc))
5160 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5161 else
5162 ioadl++;
5163 }
5164}
5165
5166/**
5167 * ipr_qc_issue - Issue a SATA qc to a device
5168 * @qc: queued command
5169 *
5170 * Return value:
5171 * 0 if success
5172 **/
5173static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5174{
5175 struct ata_port *ap = qc->ap;
5176 struct ipr_sata_port *sata_port = ap->private_data;
5177 struct ipr_resource_entry *res = sata_port->res;
5178 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5179 struct ipr_cmnd *ipr_cmd;
5180 struct ipr_ioarcb *ioarcb;
5181 struct ipr_ioarcb_ata_regs *regs;
5182
5183 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5184 return AC_ERR_SYSTEM;
35a39691
BK		 5185
5186 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5187 ioarcb = &ipr_cmd->ioarcb;
5188 regs = &ioarcb->add_data.u.regs;
5189
5190 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5191 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5192
5193 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5194 ipr_cmd->qc = qc;
5195 ipr_cmd->done = ipr_sata_done;
5196 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5197 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5198 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5199 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5200 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5201
5202 ipr_build_ata_ioadl(ipr_cmd, qc);
5203 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5204 ipr_copy_sata_tf(regs, &qc->tf);
5205 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5206 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5207
5208 switch (qc->tf.protocol) {
5209 case ATA_PROT_NODATA:
5210 case ATA_PROT_PIO:
5211 break;
5212
5213 case ATA_PROT_DMA:
5214 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5215 break;
5216
5217 case ATA_PROT_ATAPI:
5218 case ATA_PROT_ATAPI_NODATA:
5219 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5220 break;
5221
5222 case ATA_PROT_ATAPI_DMA:
5223 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5224 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5225 break;
5226
5227 default:
5228 WARN_ON(1);
0feeed82 5229 return AC_ERR_INVALID;
35a39691
BK		 5230 }
5231
5232 mb();
5233 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5234 ioa_cfg->regs.ioarrin_reg);
5235 return 0;
5236}
5237
5238/**
5239 * ipr_ata_check_status - Return last ATA status
5240 * @ap: ATA port
5241 *
5242 * Return value:
5243 * ATA status
5244 **/
5245static u8 ipr_ata_check_status(struct ata_port *ap)
5246{
5247 struct ipr_sata_port *sata_port = ap->private_data;
5248 return sata_port->ioasa.status;
5249}
5250
5251/**
5252 * ipr_ata_check_altstatus - Return last ATA altstatus
5253 * @ap: ATA port
5254 *
5255 * Return value:
5256 * Alt ATA status
5257 **/
5258static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5259{
5260 struct ipr_sata_port *sata_port = ap->private_data;
5261 return sata_port->ioasa.alt_status;
5262}
5263
5264static struct ata_port_operations ipr_sata_ops = {
35a39691
BK		 5265 .check_status = ipr_ata_check_status,
5266 .check_altstatus = ipr_ata_check_altstatus,
5267 .dev_select = ata_noop_dev_select,
5268 .phy_reset = ipr_ata_phy_reset,
5269 .post_internal_cmd = ipr_ata_post_internal,
5270 .tf_read = ipr_tf_read,
5271 .qc_prep = ata_noop_qc_prep,
5272 .qc_issue = ipr_qc_issue,
5273 .port_start = ata_sas_port_start,
5274 .port_stop = ata_sas_port_stop
5275};
5276
5277static struct ata_port_info sata_port_info = {
5278 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5279 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5280 .pio_mask = 0x10, /* pio4 */
5281 .mwdma_mask = 0x07,
5282 .udma_mask = 0x7f, /* udma0-6 */
5283 .port_ops = &ipr_sata_ops
5284};
5285
1da177e4
LT		 5286#ifdef CONFIG_PPC_PSERIES
5287static const u16 ipr_blocked_processors[] = {
5288 PV_NORTHSTAR,
5289 PV_PULSAR,
5290 PV_POWER4,
5291 PV_ICESTAR,
5292 PV_SSTAR,
5293 PV_POWER4p,
5294 PV_630,
5295 PV_630p
5296};
5297
5298/**
5299 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5300 * @ioa_cfg: ioa cfg struct
5301 *
5302 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5303 * certain pSeries hardware. This function determines if the given
5304 * adapter is in one of these confgurations or not.
5305 *
5306 * Return value:
5307 * 1 if adapter is not supported / 0 if adapter is supported
5308 **/
5309static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5310{
1da177e4
LT		 5311 int i;
5312
44c10138
AK		 5313 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5314 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5315 if (__is_processor(ipr_blocked_processors[i]))
5316 return 1;
1da177e4
LT		 5317 }
5318 }
5319 return 0;
5320}
5321#else
5322#define ipr_invalid_adapter(ioa_cfg) 0
5323#endif
5324
5325/**
5326 * ipr_ioa_bringdown_done - IOA bring down completion.
5327 * @ipr_cmd: ipr command struct
5328 *
5329 * This function processes the completion of an adapter bring down.
5330 * It wakes any reset sleepers.
5331 *
5332 * Return value:
5333 * IPR_RC_JOB_RETURN
5334 **/
5335static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5336{
5337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5338
5339 ENTER;
5340 ioa_cfg->in_reset_reload = 0;
5341 ioa_cfg->reset_retries = 0;
5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5343 wake_up_all(&ioa_cfg->reset_wait_q);
5344
5345 spin_unlock_irq(ioa_cfg->host->host_lock);
5346 scsi_unblock_requests(ioa_cfg->host);
5347 spin_lock_irq(ioa_cfg->host->host_lock);
5348 LEAVE;
5349
5350 return IPR_RC_JOB_RETURN;
5351}
5352
5353/**
5354 * ipr_ioa_reset_done - IOA reset completion.
5355 * @ipr_cmd: ipr command struct
5356 *
5357 * This function processes the completion of an adapter reset.
5358 * It schedules any necessary mid-layer add/removes and
5359 * wakes any reset sleepers.
5360 *
5361 * Return value:
5362 * IPR_RC_JOB_RETURN
5363 **/
5364static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5365{
5366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5367 struct ipr_resource_entry *res;
5368 struct ipr_hostrcb *hostrcb, *temp;
5369 int i = 0;
5370
5371 ENTER;
5372 ioa_cfg->in_reset_reload = 0;
5373 ioa_cfg->allow_cmds = 1;
5374 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5375 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5376
5377 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5378 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5379 ipr_trace;
5380 break;
5381 }
5382 }
5383 schedule_work(&ioa_cfg->work_q);
5384
5385 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5386 list_del(&hostrcb->queue);
5387 if (i++ < IPR_NUM_LOG_HCAMS)
5388 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5389 else
5390 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5391 }
5392
6bb04170 5393 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5394 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5395
5396 ioa_cfg->reset_retries = 0;
5397 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5398 wake_up_all(&ioa_cfg->reset_wait_q);
5399
5400 spin_unlock_irq(ioa_cfg->host->host_lock);
5401 scsi_unblock_requests(ioa_cfg->host);
5402 spin_lock_irq(ioa_cfg->host->host_lock);
5403
5404 if (!ioa_cfg->allow_cmds)
5405 scsi_block_requests(ioa_cfg->host);
5406
5407 LEAVE;
5408 return IPR_RC_JOB_RETURN;
5409}
5410
5411/**
5412 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5413 * @supported_dev: supported device struct
5414 * @vpids: vendor product id struct
5415 *
5416 * Return value:
5417 * none
5418 **/
5419static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5420 struct ipr_std_inq_vpids *vpids)
5421{
5422 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5423 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5424 supported_dev->num_records = 1;
5425 supported_dev->data_length =
5426 cpu_to_be16(sizeof(struct ipr_supported_device));
5427 supported_dev->reserved = 0;
5428}
5429
5430/**
5431 * ipr_set_supported_devs - Send Set Supported Devices for a device
5432 * @ipr_cmd: ipr command struct
5433 *
5434 * This function send a Set Supported Devices to the adapter
5435 *
5436 * Return value:
5437 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5438 **/
5439static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5440{
5441 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5442 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5443 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5444 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5445 struct ipr_resource_entry *res = ipr_cmd->u.res;
5446
5447 ipr_cmd->job_step = ipr_ioa_reset_done;
5448
5449 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5450 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5451 continue;
5452
5453 ipr_cmd->u.res = res;
5454 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5455
5456 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5457 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5458 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5459
5460 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5461 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5462 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5463
5464 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5465 sizeof(struct ipr_supported_device));
5466 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5467 offsetof(struct ipr_misc_cbs, supp_dev));
5468 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5469 ioarcb->write_data_transfer_length =
5470 cpu_to_be32(sizeof(struct ipr_supported_device));
5471
5472 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5473 IPR_SET_SUP_DEVICE_TIMEOUT);
5474
5475 ipr_cmd->job_step = ipr_set_supported_devs;
5476 return IPR_RC_JOB_RETURN;
5477 }
5478
5479 return IPR_RC_JOB_CONTINUE;
5480}
5481
62275040
BK		 5482/**
5483 * ipr_setup_write_cache - Disable write cache if needed
5484 * @ipr_cmd: ipr command struct
5485 *
5486 * This function sets up adapters write cache to desired setting
5487 *
5488 * Return value:
5489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5490 **/
5491static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5492{
5493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5494
5495 ipr_cmd->job_step = ipr_set_supported_devs;
5496 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5497 struct ipr_resource_entry, queue);
5498
5499 if (ioa_cfg->cache_state != CACHE_DISABLED)
5500 return IPR_RC_JOB_CONTINUE;
5501
5502 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5503 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5504 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5505 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5506
5507 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5508
5509 return IPR_RC_JOB_RETURN;
5510}
5511
1da177e4
LT		 5512/**
5513 * ipr_get_mode_page - Locate specified mode page
5514 * @mode_pages: mode page buffer
5515 * @page_code: page code to find
5516 * @len: minimum required length for mode page
5517 *
5518 * Return value:
5519 * pointer to mode page / NULL on failure
5520 **/
5521static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5522 u32 page_code, u32 len)
5523{
5524 struct ipr_mode_page_hdr *mode_hdr;
5525 u32 page_length;
5526 u32 length;
5527
5528 if (!mode_pages || (mode_pages->hdr.length == 0))
5529 return NULL;
5530
5531 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5532 mode_hdr = (struct ipr_mode_page_hdr *)
5533 (mode_pages->data + mode_pages->hdr.block_desc_len);
5534
5535 while (length) {
5536 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5537 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5538 return mode_hdr;
5539 break;
5540 } else {
5541 page_length = (sizeof(struct ipr_mode_page_hdr) +
5542 mode_hdr->page_length);
5543 length -= page_length;
5544 mode_hdr = (struct ipr_mode_page_hdr *)
5545 ((unsigned long)mode_hdr + page_length);
5546 }
5547 }
5548 return NULL;
5549}
5550
5551/**
5552 * ipr_check_term_power - Check for term power errors
5553 * @ioa_cfg: ioa config struct
5554 * @mode_pages: IOAFP mode pages buffer
5555 *
5556 * Check the IOAFP's mode page 28 for term power errors
5557 *
5558 * Return value:
5559 * nothing
5560 **/
5561static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5562 struct ipr_mode_pages *mode_pages)
5563{
5564 int i;
5565 int entry_length;
5566 struct ipr_dev_bus_entry *bus;
5567 struct ipr_mode_page28 *mode_page;
5568
5569 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5570 sizeof(struct ipr_mode_page28));
5571
5572 entry_length = mode_page->entry_length;
5573
5574 bus = mode_page->bus;
5575
5576 for (i = 0; i < mode_page->num_entries; i++) {
5577 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5578 dev_err(&ioa_cfg->pdev->dev,
5579 "Term power is absent on scsi bus %d\n",
5580 bus->res_addr.bus);
5581 }
5582
5583 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5584 }
5585}
5586
5587/**
5588 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5589 * @ioa_cfg: ioa config struct
5590 *
5591 * Looks through the config table checking for SES devices. If
5592 * the SES device is in the SES table indicating a maximum SCSI
5593 * bus speed, the speed is limited for the bus.
5594 *
5595 * Return value:
5596 * none
5597 **/
5598static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5599{
5600 u32 max_xfer_rate;
5601 int i;
5602
5603 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5604 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5605 ioa_cfg->bus_attr[i].bus_width);
5606
5607 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5608 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5609 }
5610}
5611
5612/**
5613 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5614 * @ioa_cfg: ioa config struct
5615 * @mode_pages: mode page 28 buffer
5616 *
5617 * Updates mode page 28 based on driver configuration
5618 *
5619 * Return value:
5620 * none
5621 **/
5622static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5623 struct ipr_mode_pages *mode_pages)
5624{
5625 int i, entry_length;
5626 struct ipr_dev_bus_entry *bus;
5627 struct ipr_bus_attributes *bus_attr;
5628 struct ipr_mode_page28 *mode_page;
5629
5630 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5631 sizeof(struct ipr_mode_page28));
5632
5633 entry_length = mode_page->entry_length;
5634
5635 /* Loop for each device bus entry */
5636 for (i = 0, bus = mode_page->bus;
5637 i < mode_page->num_entries;
5638 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5639 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5640 dev_err(&ioa_cfg->pdev->dev,
5641 "Invalid resource address reported: 0x%08X\n",
5642 IPR_GET_PHYS_LOC(bus->res_addr));
5643 continue;
5644 }
5645
5646 bus_attr = &ioa_cfg->bus_attr[i];
5647 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5648 bus->bus_width = bus_attr->bus_width;
5649 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5650 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5651 if (bus_attr->qas_enabled)
5652 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5653 else
5654 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5655 }
5656}
5657
5658/**
5659 * ipr_build_mode_select - Build a mode select command
5660 * @ipr_cmd: ipr command struct
5661 * @res_handle: resource handle to send command to
5662 * @parm: Byte 2 of Mode Sense command
5663 * @dma_addr: DMA buffer address
5664 * @xfer_len: data transfer length
5665 *
5666 * Return value:
5667 * none
5668 **/
5669static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5670 __be32 res_handle, u8 parm, u32 dma_addr,
5671 u8 xfer_len)
5672{
5673 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5674 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5675
5676 ioarcb->res_handle = res_handle;
5677 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5678 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5679 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5680 ioarcb->cmd_pkt.cdb[1] = parm;
5681 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5682
5683 ioadl->flags_and_data_len =
5684 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5685 ioadl->address = cpu_to_be32(dma_addr);
5686 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5687 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5688}
5689
5690/**
5691 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5692 * @ipr_cmd: ipr command struct
5693 *
5694 * This function sets up the SCSI bus attributes and sends
5695 * a Mode Select for Page 28 to activate them.
5696 *
5697 * Return value:
5698 * IPR_RC_JOB_RETURN
5699 **/
5700static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5701{
5702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5703 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5704 int length;
5705
5706 ENTER;
4733804c
BK		 5707 ipr_scsi_bus_speed_limit(ioa_cfg);
5708 ipr_check_term_power(ioa_cfg, mode_pages);
5709 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5710 length = mode_pages->hdr.length + 1;
5711 mode_pages->hdr.length = 0;
1da177e4
LT		 5712
5713 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5714 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5715 length);
5716
62275040 5717 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5718 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5719
5720 LEAVE;
5721 return IPR_RC_JOB_RETURN;
5722}
5723
5724/**
5725 * ipr_build_mode_sense - Builds a mode sense command
5726 * @ipr_cmd: ipr command struct
5727 * @res: resource entry struct
5728 * @parm: Byte 2 of mode sense command
5729 * @dma_addr: DMA address of mode sense buffer
5730 * @xfer_len: Size of DMA buffer
5731 *
5732 * Return value:
5733 * none
5734 **/
5735static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5736 __be32 res_handle,
5737 u8 parm, u32 dma_addr, u8 xfer_len)
5738{
5739 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5740 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5741
5742 ioarcb->res_handle = res_handle;
5743 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5744 ioarcb->cmd_pkt.cdb[2] = parm;
5745 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5746 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5747
5748 ioadl->flags_and_data_len =
5749 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5750 ioadl->address = cpu_to_be32(dma_addr);
5751 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5752 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5753}
5754
dfed823e
BK		 5755/**
5756 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5757 * @ipr_cmd: ipr command struct
5758 *
5759 * This function handles the failure of an IOA bringup command.
5760 *
5761 * Return value:
5762 * IPR_RC_JOB_RETURN
5763 **/
5764static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5765{
5766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5767 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5768
5769 dev_err(&ioa_cfg->pdev->dev,
5770 "0x%02X failed with IOASC: 0x%08X\n",
5771 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5772
5773 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5775 return IPR_RC_JOB_RETURN;
5776}
5777
5778/**
5779 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5780 * @ipr_cmd: ipr command struct
5781 *
5782 * This function handles the failure of a Mode Sense to the IOAFP.
5783 * Some adapters do not handle all mode pages.
5784 *
5785 * Return value:
5786 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5787 **/
5788static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5789{
5790 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5791
5792 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5793 ipr_cmd->job_step = ipr_setup_write_cache;
5794 return IPR_RC_JOB_CONTINUE;
5795 }
5796
5797 return ipr_reset_cmd_failed(ipr_cmd);
5798}
5799
1da177e4
LT		 5800/**
5801 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5802 * @ipr_cmd: ipr command struct
5803 *
5804 * This function send a Page 28 mode sense to the IOA to
5805 * retrieve SCSI bus attributes.
5806 *
5807 * Return value:
5808 * IPR_RC_JOB_RETURN
5809 **/
5810static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5811{
5812 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5813
5814 ENTER;
5815 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5816 0x28, ioa_cfg->vpd_cbs_dma +
5817 offsetof(struct ipr_misc_cbs, mode_pages),
5818 sizeof(struct ipr_mode_pages));
5819
5820 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5821 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5822
5823 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5824
5825 LEAVE;
5826 return IPR_RC_JOB_RETURN;
5827}
5828
ac09c349
BK		 5829/**
5830 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5831 * @ipr_cmd: ipr command struct
5832 *
5833 * This function enables dual IOA RAID support if possible.
5834 *
5835 * Return value:
5836 * IPR_RC_JOB_RETURN
5837 **/
5838static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5839{
5840 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5841 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5842 struct ipr_mode_page24 *mode_page;
5843 int length;
5844
5845 ENTER;
5846 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5847 sizeof(struct ipr_mode_page24));
5848
5849 if (mode_page)
5850 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5851
5852 length = mode_pages->hdr.length + 1;
5853 mode_pages->hdr.length = 0;
5854
5855 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5856 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5857 length);
5858
5859 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5860 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5861
5862 LEAVE;
5863 return IPR_RC_JOB_RETURN;
5864}
5865
5866/**
5867 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5868 * @ipr_cmd: ipr command struct
5869 *
5870 * This function handles the failure of a Mode Sense to the IOAFP.
5871 * Some adapters do not handle all mode pages.
5872 *
5873 * Return value:
5874 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5875 **/
5876static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5877{
5878 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5879
5880 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5881 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5882 return IPR_RC_JOB_CONTINUE;
5883 }
5884
5885 return ipr_reset_cmd_failed(ipr_cmd);
5886}
5887
5888/**
5889 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5890 * @ipr_cmd: ipr command struct
5891 *
5892 * This function send a mode sense to the IOA to retrieve
5893 * the IOA Advanced Function Control mode page.
5894 *
5895 * Return value:
5896 * IPR_RC_JOB_RETURN
5897 **/
5898static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5899{
5900 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5901
5902 ENTER;
5903 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5904 0x24, ioa_cfg->vpd_cbs_dma +
5905 offsetof(struct ipr_misc_cbs, mode_pages),
5906 sizeof(struct ipr_mode_pages));
5907
5908 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5909 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5910
5911 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5912
5913 LEAVE;
5914 return IPR_RC_JOB_RETURN;
5915}
5916
1da177e4
LT		 5917/**
5918 * ipr_init_res_table - Initialize the resource table
5919 * @ipr_cmd: ipr command struct
5920 *
5921 * This function looks through the existing resource table, comparing
5922 * it with the config table. This function will take care of old/new
5923 * devices and schedule adding/removing them from the mid-layer
5924 * as appropriate.
5925 *
5926 * Return value:
5927 * IPR_RC_JOB_CONTINUE
5928 **/
5929static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5930{
5931 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5932 struct ipr_resource_entry *res, *temp;
5933 struct ipr_config_table_entry *cfgte;
5934 int found, i;
5935 LIST_HEAD(old_res);
5936
5937 ENTER;
5938 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5939 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5940
5941 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5942 list_move_tail(&res->queue, &old_res);
5943
5944 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5945 cfgte = &ioa_cfg->cfg_table->dev[i];
5946 found = 0;
5947
5948 list_for_each_entry_safe(res, temp, &old_res, queue) {
5949 if (!memcmp(&res->cfgte.res_addr,
5950 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5951 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5952 found = 1;
5953 break;
5954 }
5955 }
5956
5957 if (!found) {
5958 if (list_empty(&ioa_cfg->free_res_q)) {
5959 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5960 break;
5961 }
5962
5963 found = 1;
5964 res = list_entry(ioa_cfg->free_res_q.next,
5965 struct ipr_resource_entry, queue);
5966 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5967 ipr_init_res_entry(res);
5968 res->add_to_ml = 1;
5969 }
5970
5971 if (found)
5972 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5973 }
5974
5975 list_for_each_entry_safe(res, temp, &old_res, queue) {
5976 if (res->sdev) {
5977 res->del_from_ml = 1;
1121b794 5978 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 5979 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5980 } else {
5981 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5982 }
5983 }
5984
ac09c349
BK		 5985 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5986 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5987 else
5988 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 5989
5990 LEAVE;
5991 return IPR_RC_JOB_CONTINUE;
5992}
5993
5994/**
5995 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5996 * @ipr_cmd: ipr command struct
5997 *
5998 * This function sends a Query IOA Configuration command
5999 * to the adapter to retrieve the IOA configuration table.
6000 *
6001 * Return value:
6002 * IPR_RC_JOB_RETURN
6003 **/
6004static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6005{
6006 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6007 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6008 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6009 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6010 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6011
6012 ENTER;
ac09c349
BK		 6013 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6014 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6015 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6016 ucode_vpd->major_release, ucode_vpd->card_type,
6017 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6018 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6019 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6020
6021 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6022 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6023 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6024
6025 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6026 ioarcb->read_data_transfer_length =
6027 cpu_to_be32(sizeof(struct ipr_config_table));
6028
6029 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6030 ioadl->flags_and_data_len =
6031 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6032
6033 ipr_cmd->job_step = ipr_init_res_table;
6034
6035 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6036
6037 LEAVE;
6038 return IPR_RC_JOB_RETURN;
6039}
6040
6041/**
6042 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6043 * @ipr_cmd: ipr command struct
6044 *
6045 * This utility function sends an inquiry to the adapter.
6046 *
6047 * Return value:
6048 * none
6049 **/
6050static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6051 u32 dma_addr, u8 xfer_len)
6052{
6053 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6054 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6055
6056 ENTER;
6057 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6058 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6059
6060 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6061 ioarcb->cmd_pkt.cdb[1] = flags;
6062 ioarcb->cmd_pkt.cdb[2] = page;
6063 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6064
6065 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6066 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6067
6068 ioadl->address = cpu_to_be32(dma_addr);
6069 ioadl->flags_and_data_len =
6070 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6071
6072 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6073 LEAVE;
6074}
6075
62275040
BK		 6076/**
6077 * ipr_inquiry_page_supported - Is the given inquiry page supported
6078 * @page0: inquiry page 0 buffer
6079 * @page: page code.
6080 *
6081 * This function determines if the specified inquiry page is supported.
6082 *
6083 * Return value:
6084 * 1 if page is supported / 0 if not
6085 **/
6086static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6087{
6088 int i;
6089
6090 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6091 if (page0->page[i] == page)
6092 return 1;
6093
6094 return 0;
6095}
6096
ac09c349
BK		 6097/**
6098 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6099 * @ipr_cmd: ipr command struct
6100 *
6101 * This function sends a Page 0xD0 inquiry to the adapter
6102 * to retrieve adapter capabilities.
6103 *
6104 * Return value:
6105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6106 **/
6107static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6108{
6109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6110 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6111 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6112
6113 ENTER;
6114 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6115 memset(cap, 0, sizeof(*cap));
6116
6117 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6118 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6119 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6120 sizeof(struct ipr_inquiry_cap));
6121 return IPR_RC_JOB_RETURN;
6122 }
6123
6124 LEAVE;
6125 return IPR_RC_JOB_CONTINUE;
6126}
6127
1da177e4
LT		 6128/**
6129 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6130 * @ipr_cmd: ipr command struct
6131 *
6132 * This function sends a Page 3 inquiry to the adapter
6133 * to retrieve software VPD information.
6134 *
6135 * Return value:
6136 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6137 **/
6138static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6139{
6140 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6141 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6142
6143 ENTER;
6144
6145 if (!ipr_inquiry_page_supported(page0, 1))
6146 ioa_cfg->cache_state = CACHE_NONE;
6147
ac09c349 6148 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6149
6150 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6151 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6152 sizeof(struct ipr_inquiry_page3));
6153
6154 LEAVE;
6155 return IPR_RC_JOB_RETURN;
6156}
6157
6158/**
6159 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6160 * @ipr_cmd: ipr command struct
6161 *
6162 * This function sends a Page 0 inquiry to the adapter
6163 * to retrieve supported inquiry pages.
6164 *
6165 * Return value:
6166 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6167 **/
6168static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6169{
6170 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6171 char type[5];
6172
6173 ENTER;
6174
6175 /* Grab the type out of the VPD and store it away */
6176 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6177 type[4] = '\0';
6178 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6179
62275040 6180 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6181
62275040
BK		 6182 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6183 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6184 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6185
6186 LEAVE;
6187 return IPR_RC_JOB_RETURN;
6188}
6189
6190/**
6191 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6192 * @ipr_cmd: ipr command struct
6193 *
6194 * This function sends a standard inquiry to the adapter.
6195 *
6196 * Return value:
6197 * IPR_RC_JOB_RETURN
6198 **/
6199static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6200{
6201 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6202
6203 ENTER;
62275040 6204 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6205
6206 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6207 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6208 sizeof(struct ipr_ioa_vpd));
6209
6210 LEAVE;
6211 return IPR_RC_JOB_RETURN;
6212}
6213
6214/**
6215 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6216 * @ipr_cmd: ipr command struct
6217 *
6218 * This function send an Identify Host Request Response Queue
6219 * command to establish the HRRQ with the adapter.
6220 *
6221 * Return value:
6222 * IPR_RC_JOB_RETURN
6223 **/
6224static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6225{
6226 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6227 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6228
6229 ENTER;
6230 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6231
6232 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6233 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6234
6235 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6236 ioarcb->cmd_pkt.cdb[2] =
6237 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6238 ioarcb->cmd_pkt.cdb[3] =
6239 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6240 ioarcb->cmd_pkt.cdb[4] =
6241 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6242 ioarcb->cmd_pkt.cdb[5] =
6243 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6244 ioarcb->cmd_pkt.cdb[7] =
6245 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6246 ioarcb->cmd_pkt.cdb[8] =
6247 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6248
6249 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6250
6251 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6252
6253 LEAVE;
6254 return IPR_RC_JOB_RETURN;
6255}
6256
6257/**
6258 * ipr_reset_timer_done - Adapter reset timer function
6259 * @ipr_cmd: ipr command struct
6260 *
6261 * Description: This function is used in adapter reset processing
6262 * for timing events. If the reset_cmd pointer in the IOA
6263 * config struct is not this adapter's we are doing nested
6264 * resets and fail_all_ops will take care of freeing the
6265 * command block.
6266 *
6267 * Return value:
6268 * none
6269 **/
6270static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6271{
6272 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6273 unsigned long lock_flags = 0;
6274
6275 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6276
6277 if (ioa_cfg->reset_cmd == ipr_cmd) {
6278 list_del(&ipr_cmd->queue);
6279 ipr_cmd->done(ipr_cmd);
6280 }
6281
6282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6283}
6284
6285/**
6286 * ipr_reset_start_timer - Start a timer for adapter reset job
6287 * @ipr_cmd: ipr command struct
6288 * @timeout: timeout value
6289 *
6290 * Description: This function is used in adapter reset processing
6291 * for timing events. If the reset_cmd pointer in the IOA
6292 * config struct is not this adapter's we are doing nested
6293 * resets and fail_all_ops will take care of freeing the
6294 * command block.
6295 *
6296 * Return value:
6297 * none
6298 **/
6299static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6300 unsigned long timeout)
6301{
6302 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6303 ipr_cmd->done = ipr_reset_ioa_job;
6304
6305 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6306 ipr_cmd->timer.expires = jiffies + timeout;
6307 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6308 add_timer(&ipr_cmd->timer);
6309}
6310
6311/**
6312 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6313 * @ioa_cfg: ioa cfg struct
6314 *
6315 * Return value:
6316 * nothing
6317 **/
6318static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6319{
6320 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6321
6322 /* Initialize Host RRQ pointers */
6323 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6324 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6325 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6326 ioa_cfg->toggle_bit = 1;
6327
6328 /* Zero out config table */
6329 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6330}
6331
6332/**
6333 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6334 * @ipr_cmd: ipr command struct
6335 *
6336 * This function reinitializes some control blocks and
6337 * enables destructive diagnostics on the adapter.
6338 *
6339 * Return value:
6340 * IPR_RC_JOB_RETURN
6341 **/
6342static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6343{
6344 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6345 volatile u32 int_reg;
6346
6347 ENTER;
6348 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6349 ipr_init_ioa_mem(ioa_cfg);
6350
6351 ioa_cfg->allow_interrupts = 1;
6352 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6353
6354 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6355 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6356 ioa_cfg->regs.clr_interrupt_mask_reg);
6357 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6358 return IPR_RC_JOB_CONTINUE;
6359 }
6360
6361 /* Enable destructive diagnostics on IOA */
3d1d0da6 6362 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6363
6364 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6365 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6366
6367 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6368
6369 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6370 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6371 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6372 ipr_cmd->done = ipr_reset_ioa_job;
6373 add_timer(&ipr_cmd->timer);
6374 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6375
6376 LEAVE;
6377 return IPR_RC_JOB_RETURN;
6378}
6379
6380/**
6381 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6382 * @ipr_cmd: ipr command struct
6383 *
6384 * This function is invoked when an adapter dump has run out
6385 * of processing time.
6386 *
6387 * Return value:
6388 * IPR_RC_JOB_CONTINUE
6389 **/
6390static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6391{
6392 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6393
6394 if (ioa_cfg->sdt_state == GET_DUMP)
6395 ioa_cfg->sdt_state = ABORT_DUMP;
6396
6397 ipr_cmd->job_step = ipr_reset_alert;
6398
6399 return IPR_RC_JOB_CONTINUE;
6400}
6401
6402/**
6403 * ipr_unit_check_no_data - Log a unit check/no data error log
6404 * @ioa_cfg: ioa config struct
6405 *
6406 * Logs an error indicating the adapter unit checked, but for some
6407 * reason, we were unable to fetch the unit check buffer.
6408 *
6409 * Return value:
6410 * nothing
6411 **/
6412static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6413{
6414 ioa_cfg->errors_logged++;
6415 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6416}
6417
6418/**
6419 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6420 * @ioa_cfg: ioa config struct
6421 *
6422 * Fetches the unit check buffer from the adapter by clocking the data
6423 * through the mailbox register.
6424 *
6425 * Return value:
6426 * nothing
6427 **/
6428static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6429{
6430 unsigned long mailbox;
6431 struct ipr_hostrcb *hostrcb;
6432 struct ipr_uc_sdt sdt;
6433 int rc, length;
65f56475 6434 u32 ioasc;
1da177e4
LT		 6435
6436 mailbox = readl(ioa_cfg->ioa_mailbox);
6437
6438 if (!ipr_sdt_is_fmt2(mailbox)) {
6439 ipr_unit_check_no_data(ioa_cfg);
6440 return;
6441 }
6442
6443 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6444 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6445 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6446
6447 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6448 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6449 ipr_unit_check_no_data(ioa_cfg);
6450 return;
6451 }
6452
6453 /* Find length of the first sdt entry (UC buffer) */
6454 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6455 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6456
6457 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6458 struct ipr_hostrcb, queue);
6459 list_del(&hostrcb->queue);
6460 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6461
6462 rc = ipr_get_ldump_data_section(ioa_cfg,
6463 be32_to_cpu(sdt.entry[0].bar_str_offset),
6464 (__be32 *)&hostrcb->hcam,
6465 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6466
65f56475 6467 if (!rc) {
1da177e4 6468 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6469 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6470 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6471 ioa_cfg->sdt_state == GET_DUMP)
6472 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6473 } else
1da177e4
LT		 6474 ipr_unit_check_no_data(ioa_cfg);
6475
6476 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6477}
6478
6479/**
6480 * ipr_reset_restore_cfg_space - Restore PCI config space.
6481 * @ipr_cmd: ipr command struct
6482 *
6483 * Description: This function restores the saved PCI config space of
6484 * the adapter, fails all outstanding ops back to the callers, and
6485 * fetches the dump/unit check if applicable to this reset.
6486 *
6487 * Return value:
6488 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6489 **/
6490static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6491{
6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6493 int rc;
6494
6495 ENTER;
6496 rc = pci_restore_state(ioa_cfg->pdev);
6497
6498 if (rc != PCIBIOS_SUCCESSFUL) {
6499 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6500 return IPR_RC_JOB_CONTINUE;
6501 }
6502
6503 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6504 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6505 return IPR_RC_JOB_CONTINUE;
6506 }
6507
6508 ipr_fail_all_ops(ioa_cfg);
6509
6510 if (ioa_cfg->ioa_unit_checked) {
6511 ioa_cfg->ioa_unit_checked = 0;
6512 ipr_get_unit_check_buffer(ioa_cfg);
6513 ipr_cmd->job_step = ipr_reset_alert;
6514 ipr_reset_start_timer(ipr_cmd, 0);
6515 return IPR_RC_JOB_RETURN;
6516 }
6517
6518 if (ioa_cfg->in_ioa_bringdown) {
6519 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6520 } else {
6521 ipr_cmd->job_step = ipr_reset_enable_ioa;
6522
6523 if (GET_DUMP == ioa_cfg->sdt_state) {
6524 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6525 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6526 schedule_work(&ioa_cfg->work_q);
6527 return IPR_RC_JOB_RETURN;
6528 }
6529 }
6530
6531 ENTER;
6532 return IPR_RC_JOB_CONTINUE;
6533}
6534
e619e1a7
BK		 6535/**
6536 * ipr_reset_bist_done - BIST has completed on the adapter.
6537 * @ipr_cmd: ipr command struct
6538 *
6539 * Description: Unblock config space and resume the reset process.
6540 *
6541 * Return value:
6542 * IPR_RC_JOB_CONTINUE
6543 **/
6544static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6545{
6546 ENTER;
6547 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6548 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6549 LEAVE;
6550 return IPR_RC_JOB_CONTINUE;
6551}
6552
1da177e4
LT		 6553/**
6554 * ipr_reset_start_bist - Run BIST on the adapter.
6555 * @ipr_cmd: ipr command struct
6556 *
6557 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6558 *
6559 * Return value:
6560 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6561 **/
6562static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6563{
6564 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6565 int rc;
6566
6567 ENTER;
b30197d2 6568 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6569 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6570
6571 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6572 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6573 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6574 rc = IPR_RC_JOB_CONTINUE;
6575 } else {
e619e1a7 6576 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6577 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6578 rc = IPR_RC_JOB_RETURN;
6579 }
6580
6581 LEAVE;
6582 return rc;
6583}
6584
463fc696
BK		 6585/**
6586 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6587 * @ipr_cmd: ipr command struct
6588 *
6589 * Description: This clears PCI reset to the adapter and delays two seconds.
6590 *
6591 * Return value:
6592 * IPR_RC_JOB_RETURN
6593 **/
6594static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6595{
6596 ENTER;
6597 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6598 ipr_cmd->job_step = ipr_reset_bist_done;
6599 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6600 LEAVE;
6601 return IPR_RC_JOB_RETURN;
6602}
6603
6604/**
6605 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6606 * @ipr_cmd: ipr command struct
6607 *
6608 * Description: This asserts PCI reset to the adapter.
6609 *
6610 * Return value:
6611 * IPR_RC_JOB_RETURN
6612 **/
6613static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6614{
6615 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6616 struct pci_dev *pdev = ioa_cfg->pdev;
6617
6618 ENTER;
6619 pci_block_user_cfg_access(pdev);
6620 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6621 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6622 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6623 LEAVE;
6624 return IPR_RC_JOB_RETURN;
6625}
6626
1da177e4
LT		 6627/**
6628 * ipr_reset_allowed - Query whether or not IOA can be reset
6629 * @ioa_cfg: ioa config struct
6630 *
6631 * Return value:
6632 * 0 if reset not allowed / non-zero if reset is allowed
6633 **/
6634static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6635{
6636 volatile u32 temp_reg;
6637
6638 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6639 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6640}
6641
6642/**
6643 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6644 * @ipr_cmd: ipr command struct
6645 *
6646 * Description: This function waits for adapter permission to run BIST,
6647 * then runs BIST. If the adapter does not give permission after a
6648 * reasonable time, we will reset the adapter anyway. The impact of
6649 * resetting the adapter without warning the adapter is the risk of
6650 * losing the persistent error log on the adapter. If the adapter is
6651 * reset while it is writing to the flash on the adapter, the flash
6652 * segment will have bad ECC and be zeroed.
6653 *
6654 * Return value:
6655 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6656 **/
6657static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6658{
6659 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6660 int rc = IPR_RC_JOB_RETURN;
6661
6662 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6663 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6664 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6665 } else {
463fc696 6666 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6667 rc = IPR_RC_JOB_CONTINUE;
6668 }
6669
6670 return rc;
6671}
6672
6673/**
6674 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6675 * @ipr_cmd: ipr command struct
6676 *
6677 * Description: This function alerts the adapter that it will be reset.
6678 * If memory space is not currently enabled, proceed directly
6679 * to running BIST on the adapter. The timer must always be started
6680 * so we guarantee we do not run BIST from ipr_isr.
6681 *
6682 * Return value:
6683 * IPR_RC_JOB_RETURN
6684 **/
6685static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6686{
6687 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6688 u16 cmd_reg;
6689 int rc;
6690
6691 ENTER;
6692 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6693
6694 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6695 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6696 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6697 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6698 } else {
463fc696 6699 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6700 }
6701
6702 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6703 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6704
6705 LEAVE;
6706 return IPR_RC_JOB_RETURN;
6707}
6708
6709/**
6710 * ipr_reset_ucode_download_done - Microcode download completion
6711 * @ipr_cmd: ipr command struct
6712 *
6713 * Description: This function unmaps the microcode download buffer.
6714 *
6715 * Return value:
6716 * IPR_RC_JOB_CONTINUE
6717 **/
6718static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6719{
6720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6721 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6722
6723 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6724 sglist->num_sg, DMA_TO_DEVICE);
6725
6726 ipr_cmd->job_step = ipr_reset_alert;
6727 return IPR_RC_JOB_CONTINUE;
6728}
6729
6730/**
6731 * ipr_reset_ucode_download - Download microcode to the adapter
6732 * @ipr_cmd: ipr command struct
6733 *
6734 * Description: This function checks to see if it there is microcode
6735 * to download to the adapter. If there is, a download is performed.
6736 *
6737 * Return value:
6738 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6739 **/
6740static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6741{
6742 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6743 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6744
6745 ENTER;
6746 ipr_cmd->job_step = ipr_reset_alert;
6747
6748 if (!sglist)
6749 return IPR_RC_JOB_CONTINUE;
6750
6751 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6752 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6753 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6754 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6755 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6756 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6757 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6758
12baa420 6759 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6760 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6761
6762 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6763 IPR_WRITE_BUFFER_TIMEOUT);
6764
6765 LEAVE;
6766 return IPR_RC_JOB_RETURN;
6767}
6768
6769/**
6770 * ipr_reset_shutdown_ioa - Shutdown the adapter
6771 * @ipr_cmd: ipr command struct
6772 *
6773 * Description: This function issues an adapter shutdown of the
6774 * specified type to the specified adapter as part of the
6775 * adapter reset job.
6776 *
6777 * Return value:
6778 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6779 **/
6780static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6781{
6782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6783 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6784 unsigned long timeout;
6785 int rc = IPR_RC_JOB_CONTINUE;
6786
6787 ENTER;
6788 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6789 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6790 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6791 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6792 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6793
ac09c349
BK		 6794 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6795 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6796 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6797 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6798 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6799 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6800 else
ac09c349 6801 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6802
6803 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6804
6805 rc = IPR_RC_JOB_RETURN;
6806 ipr_cmd->job_step = ipr_reset_ucode_download;
6807 } else
6808 ipr_cmd->job_step = ipr_reset_alert;
6809
6810 LEAVE;
6811 return rc;
6812}
6813
6814/**
6815 * ipr_reset_ioa_job - Adapter reset job
6816 * @ipr_cmd: ipr command struct
6817 *
6818 * Description: This function is the job router for the adapter reset job.
6819 *
6820 * Return value:
6821 * none
6822 **/
6823static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6824{
6825 u32 rc, ioasc;
1da177e4
LT		 6826 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6827
6828 do {
6829 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6830
6831 if (ioa_cfg->reset_cmd != ipr_cmd) {
6832 /*
6833 * We are doing nested adapter resets and this is
6834 * not the current reset job.
6835 */
6836 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6837 return;
6838 }
6839
6840 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6841 rc = ipr_cmd->job_step_failed(ipr_cmd);
6842 if (rc == IPR_RC_JOB_RETURN)
6843 return;
1da177e4
LT		 6844 }
6845
6846 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6847 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6848 rc = ipr_cmd->job_step(ipr_cmd);
6849 } while(rc == IPR_RC_JOB_CONTINUE);
6850}
6851
6852/**
6853 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6854 * @ioa_cfg: ioa config struct
6855 * @job_step: first job step of reset job
6856 * @shutdown_type: shutdown type
6857 *
6858 * Description: This function will initiate the reset of the given adapter
6859 * starting at the selected job step.
6860 * If the caller needs to wait on the completion of the reset,
6861 * the caller must sleep on the reset_wait_q.
6862 *
6863 * Return value:
6864 * none
6865 **/
6866static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6867 int (*job_step) (struct ipr_cmnd *),
6868 enum ipr_shutdown_type shutdown_type)
6869{
6870 struct ipr_cmnd *ipr_cmd;
6871
6872 ioa_cfg->in_reset_reload = 1;
6873 ioa_cfg->allow_cmds = 0;
6874 scsi_block_requests(ioa_cfg->host);
6875
6876 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6877 ioa_cfg->reset_cmd = ipr_cmd;
6878 ipr_cmd->job_step = job_step;
6879 ipr_cmd->u.shutdown_type = shutdown_type;
6880
6881 ipr_reset_ioa_job(ipr_cmd);
6882}
6883
6884/**
6885 * ipr_initiate_ioa_reset - Initiate an adapter reset
6886 * @ioa_cfg: ioa config struct
6887 * @shutdown_type: shutdown type
6888 *
6889 * Description: This function will initiate the reset of the given adapter.
6890 * If the caller needs to wait on the completion of the reset,
6891 * the caller must sleep on the reset_wait_q.
6892 *
6893 * Return value:
6894 * none
6895 **/
6896static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6897 enum ipr_shutdown_type shutdown_type)
6898{
6899 if (ioa_cfg->ioa_is_dead)
6900 return;
6901
6902 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6903 ioa_cfg->sdt_state = ABORT_DUMP;
6904
6905 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6906 dev_err(&ioa_cfg->pdev->dev,
6907 "IOA taken offline - error recovery failed\n");
6908
6909 ioa_cfg->reset_retries = 0;
6910 ioa_cfg->ioa_is_dead = 1;
6911
6912 if (ioa_cfg->in_ioa_bringdown) {
6913 ioa_cfg->reset_cmd = NULL;
6914 ioa_cfg->in_reset_reload = 0;
6915 ipr_fail_all_ops(ioa_cfg);
6916 wake_up_all(&ioa_cfg->reset_wait_q);
6917
6918 spin_unlock_irq(ioa_cfg->host->host_lock);
6919 scsi_unblock_requests(ioa_cfg->host);
6920 spin_lock_irq(ioa_cfg->host->host_lock);
6921 return;
6922 } else {
6923 ioa_cfg->in_ioa_bringdown = 1;
6924 shutdown_type = IPR_SHUTDOWN_NONE;
6925 }
6926 }
6927
6928 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6929 shutdown_type);
6930}
6931
f8a88b19
LV		 6932/**
6933 * ipr_reset_freeze - Hold off all I/O activity
6934 * @ipr_cmd: ipr command struct
6935 *
6936 * Description: If the PCI slot is frozen, hold off all I/O
6937 * activity; then, as soon as the slot is available again,
6938 * initiate an adapter reset.
6939 */
6940static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6941{
6942 /* Disallow new interrupts, avoid loop */
6943 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6944 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6945 ipr_cmd->done = ipr_reset_ioa_job;
6946 return IPR_RC_JOB_RETURN;
6947}
6948
6949/**
6950 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6951 * @pdev: PCI device struct
6952 *
6953 * Description: This routine is called to tell us that the PCI bus
6954 * is down. Can't do anything here, except put the device driver
6955 * into a holding pattern, waiting for the PCI bus to come back.
6956 */
6957static void ipr_pci_frozen(struct pci_dev *pdev)
6958{
6959 unsigned long flags = 0;
6960 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6961
6962 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6963 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6965}
6966
6967/**
6968 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6969 * @pdev: PCI device struct
6970 *
6971 * Description: This routine is called by the pci error recovery
6972 * code after the PCI slot has been reset, just before we
6973 * should resume normal operations.
6974 */
6975static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6976{
6977 unsigned long flags = 0;
6978 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6979
6980 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 6981 if (ioa_cfg->needs_warm_reset)
6982 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6983 else
6984 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6985 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 6986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6987 return PCI_ERS_RESULT_RECOVERED;
6988}
6989
6990/**
6991 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6992 * @pdev: PCI device struct
6993 *
6994 * Description: This routine is called when the PCI bus has
6995 * permanently failed.
6996 */
6997static void ipr_pci_perm_failure(struct pci_dev *pdev)
6998{
6999 unsigned long flags = 0;
7000 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7001
7002 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7003 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7004 ioa_cfg->sdt_state = ABORT_DUMP;
7005 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7006 ioa_cfg->in_ioa_bringdown = 1;
7007 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7008 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7009}
7010
7011/**
7012 * ipr_pci_error_detected - Called when a PCI error is detected.
7013 * @pdev: PCI device struct
7014 * @state: PCI channel state
7015 *
7016 * Description: Called when a PCI error is detected.
7017 *
7018 * Return value:
7019 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7020 */
7021static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7022 pci_channel_state_t state)
7023{
7024 switch (state) {
7025 case pci_channel_io_frozen:
7026 ipr_pci_frozen(pdev);
7027 return PCI_ERS_RESULT_NEED_RESET;
7028 case pci_channel_io_perm_failure:
7029 ipr_pci_perm_failure(pdev);
7030 return PCI_ERS_RESULT_DISCONNECT;
7031 break;
7032 default:
7033 break;
7034 }
7035 return PCI_ERS_RESULT_NEED_RESET;
7036}
7037
1da177e4
LT		 7038/**
7039 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7040 * @ioa_cfg: ioa cfg struct
7041 *
7042 * Description: This is the second phase of adapter intialization
7043 * This function takes care of initilizing the adapter to the point
7044 * where it can accept new commands.
7045
7046 * Return value:
7047 * 0 on sucess / -EIO on failure
7048 **/
7049static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7050{
7051 int rc = 0;
7052 unsigned long host_lock_flags = 0;
7053
7054 ENTER;
7055 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7056 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7057 if (ioa_cfg->needs_hard_reset) {
7058 ioa_cfg->needs_hard_reset = 0;
7059 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7060 } else
7061 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7062 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7063
7064 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7065 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7066 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7067
7068 if (ioa_cfg->ioa_is_dead) {
7069 rc = -EIO;
7070 } else if (ipr_invalid_adapter(ioa_cfg)) {
7071 if (!ipr_testmode)
7072 rc = -EIO;
7073
7074 dev_err(&ioa_cfg->pdev->dev,
7075 "Adapter not supported in this hardware configuration.\n");
7076 }
7077
7078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7079
7080 LEAVE;
7081 return rc;
7082}
7083
7084/**
7085 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7086 * @ioa_cfg: ioa config struct
7087 *
7088 * Return value:
7089 * none
7090 **/
7091static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7092{
7093 int i;
7094
7095 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7096 if (ioa_cfg->ipr_cmnd_list[i])
7097 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7098 ioa_cfg->ipr_cmnd_list[i],
7099 ioa_cfg->ipr_cmnd_list_dma[i]);
7100
7101 ioa_cfg->ipr_cmnd_list[i] = NULL;
7102 }
7103
7104 if (ioa_cfg->ipr_cmd_pool)
7105 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7106
7107 ioa_cfg->ipr_cmd_pool = NULL;
7108}
7109
7110/**
7111 * ipr_free_mem - Frees memory allocated for an adapter
7112 * @ioa_cfg: ioa cfg struct
7113 *
7114 * Return value:
7115 * nothing
7116 **/
7117static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7118{
7119 int i;
7120
7121 kfree(ioa_cfg->res_entries);
7122 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7123 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7124 ipr_free_cmd_blks(ioa_cfg);
7125 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7126 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7127 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7128 ioa_cfg->cfg_table,
7129 ioa_cfg->cfg_table_dma);
7130
7131 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7132 pci_free_consistent(ioa_cfg->pdev,
7133 sizeof(struct ipr_hostrcb),
7134 ioa_cfg->hostrcb[i],
7135 ioa_cfg->hostrcb_dma[i]);
7136 }
7137
7138 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7139 kfree(ioa_cfg->trace);
7140}
7141
7142/**
7143 * ipr_free_all_resources - Free all allocated resources for an adapter.
7144 * @ipr_cmd: ipr command struct
7145 *
7146 * This function frees all allocated resources for the
7147 * specified adapter.
7148 *
7149 * Return value:
7150 * none
7151 **/
7152static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7153{
7154 struct pci_dev *pdev = ioa_cfg->pdev;
7155
7156 ENTER;
7157 free_irq(pdev->irq, ioa_cfg);
7158 iounmap(ioa_cfg->hdw_dma_regs);
7159 pci_release_regions(pdev);
7160 ipr_free_mem(ioa_cfg);
7161 scsi_host_put(ioa_cfg->host);
7162 pci_disable_device(pdev);
7163 LEAVE;
7164}
7165
7166/**
7167 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7168 * @ioa_cfg: ioa config struct
7169 *
7170 * Return value:
7171 * 0 on success / -ENOMEM on allocation failure
7172 **/
7173static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7174{
7175 struct ipr_cmnd *ipr_cmd;
7176 struct ipr_ioarcb *ioarcb;
7177 dma_addr_t dma_addr;
7178 int i;
7179
7180 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7181 sizeof(struct ipr_cmnd), 8, 0);
7182
7183 if (!ioa_cfg->ipr_cmd_pool)
7184 return -ENOMEM;
7185
7186 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7187 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7188
7189 if (!ipr_cmd) {
7190 ipr_free_cmd_blks(ioa_cfg);
7191 return -ENOMEM;
7192 }
7193
7194 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7195 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7196 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7197
7198 ioarcb = &ipr_cmd->ioarcb;
7199 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7200 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7201 ioarcb->write_ioadl_addr =
7202 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7203 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7204 ioarcb->ioasa_host_pci_addr =
7205 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7206 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7207 ipr_cmd->cmd_index = i;
7208 ipr_cmd->ioa_cfg = ioa_cfg;
7209 ipr_cmd->sense_buffer_dma = dma_addr +
7210 offsetof(struct ipr_cmnd, sense_buffer);
7211
7212 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7213 }
7214
7215 return 0;
7216}
7217
7218/**
7219 * ipr_alloc_mem - Allocate memory for an adapter
7220 * @ioa_cfg: ioa config struct
7221 *
7222 * Return value:
7223 * 0 on success / non-zero for error
7224 **/
7225static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7226{
7227 struct pci_dev *pdev = ioa_cfg->pdev;
7228 int i, rc = -ENOMEM;
7229
7230 ENTER;
0bc42e35 7231 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7232 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7233
7234 if (!ioa_cfg->res_entries)
7235 goto out;
7236
1da177e4
LT		 7237 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7238 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7239
7240 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7241 sizeof(struct ipr_misc_cbs),
7242 &ioa_cfg->vpd_cbs_dma);
7243
7244 if (!ioa_cfg->vpd_cbs)
7245 goto out_free_res_entries;
7246
7247 if (ipr_alloc_cmd_blks(ioa_cfg))
7248 goto out_free_vpd_cbs;
7249
7250 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7251 sizeof(u32) * IPR_NUM_CMD_BLKS,
7252 &ioa_cfg->host_rrq_dma);
7253
7254 if (!ioa_cfg->host_rrq)
7255 goto out_ipr_free_cmd_blocks;
7256
7257 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7258 sizeof(struct ipr_config_table),
7259 &ioa_cfg->cfg_table_dma);
7260
7261 if (!ioa_cfg->cfg_table)
7262 goto out_free_host_rrq;
7263
7264 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7265 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7266 sizeof(struct ipr_hostrcb),
7267 &ioa_cfg->hostrcb_dma[i]);
7268
7269 if (!ioa_cfg->hostrcb[i])
7270 goto out_free_hostrcb_dma;
7271
7272 ioa_cfg->hostrcb[i]->hostrcb_dma =
7273 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7274 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7275 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7276 }
7277
0bc42e35 7278 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7279 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7280
7281 if (!ioa_cfg->trace)
7282 goto out_free_hostrcb_dma;
7283
1da177e4
LT		 7284 rc = 0;
7285out:
7286 LEAVE;
7287 return rc;
7288
7289out_free_hostrcb_dma:
7290 while (i-- > 0) {
7291 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7292 ioa_cfg->hostrcb[i],
7293 ioa_cfg->hostrcb_dma[i]);
7294 }
7295 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7296 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7297out_free_host_rrq:
7298 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7299 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7300out_ipr_free_cmd_blocks:
7301 ipr_free_cmd_blks(ioa_cfg);
7302out_free_vpd_cbs:
7303 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7304 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7305out_free_res_entries:
7306 kfree(ioa_cfg->res_entries);
7307 goto out;
7308}
7309
7310/**
7311 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7312 * @ioa_cfg: ioa config struct
7313 *
7314 * Return value:
7315 * none
7316 **/
7317static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7318{
7319 int i;
7320
7321 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7322 ioa_cfg->bus_attr[i].bus = i;
7323 ioa_cfg->bus_attr[i].qas_enabled = 0;
7324 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7325 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7326 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7327 else
7328 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7329 }
7330}
7331
7332/**
7333 * ipr_init_ioa_cfg - Initialize IOA config struct
7334 * @ioa_cfg: ioa config struct
7335 * @host: scsi host struct
7336 * @pdev: PCI dev struct
7337 *
7338 * Return value:
7339 * none
7340 **/
7341static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7342 struct Scsi_Host *host, struct pci_dev *pdev)
7343{
7344 const struct ipr_interrupt_offsets *p;
7345 struct ipr_interrupts *t;
7346 void __iomem *base;
7347
7348 ioa_cfg->host = host;
7349 ioa_cfg->pdev = pdev;
7350 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7351 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7352 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7353 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7354 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7355 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7356 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7357 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7358 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7359 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7360
7361 INIT_LIST_HEAD(&ioa_cfg->free_q);
7362 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7363 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7364 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7365 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7366 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7367 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7368 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7369 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7370 if (ipr_enable_cache)
7371 ioa_cfg->cache_state = CACHE_ENABLED;
7372 else
7373 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7374
7375 ipr_initialize_bus_attr(ioa_cfg);
7376
7377 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7378 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7379 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7380 host->unique_id = host->host_no;
7381 host->max_cmd_len = IPR_MAX_CDB_LEN;
7382 pci_set_drvdata(pdev, ioa_cfg);
7383
7384 p = &ioa_cfg->chip_cfg->regs;
7385 t = &ioa_cfg->regs;
7386 base = ioa_cfg->hdw_dma_regs;
7387
7388 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7389 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7390 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7391 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7392 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7393 t->ioarrin_reg = base + p->ioarrin_reg;
7394 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7395 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7396 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7397}
7398
7399/**
7400 * ipr_get_chip_cfg - Find adapter chip configuration
7401 * @dev_id: PCI device id struct
7402 *
7403 * Return value:
7404 * ptr to chip config on success / NULL on failure
7405 **/
7406static const struct ipr_chip_cfg_t * __devinit
7407ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7408{
7409 int i;
7410
1da177e4
LT		 7411 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7412 if (ipr_chip[i].vendor == dev_id->vendor &&
7413 ipr_chip[i].device == dev_id->device)
7414 return ipr_chip[i].cfg;
7415 return NULL;
7416}
7417
7418/**
7419 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7420 * @pdev: PCI device struct
7421 * @dev_id: PCI device id struct
7422 *
7423 * Return value:
7424 * 0 on success / non-zero on failure
7425 **/
7426static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7427 const struct pci_device_id *dev_id)
7428{
7429 struct ipr_ioa_cfg *ioa_cfg;
7430 struct Scsi_Host *host;
7431 unsigned long ipr_regs_pci;
7432 void __iomem *ipr_regs;
a2a65a3e 7433 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7434 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7435
7436 ENTER;
7437
7438 if ((rc = pci_enable_device(pdev))) {
7439 dev_err(&pdev->dev, "Cannot enable adapter\n");
7440 goto out;
7441 }
7442
7443 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7444
7445 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7446
7447 if (!host) {
7448 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7449 rc = -ENOMEM;
7450 goto out_disable;
7451 }
7452
7453 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7454 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7455 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7456 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7457
7458 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7459
7460 if (!ioa_cfg->chip_cfg) {
7461 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7462 dev_id->vendor, dev_id->device);
7463 goto out_scsi_host_put;
7464 }
7465
5469cb5b
BK		 7466 if (ipr_transop_timeout)
7467 ioa_cfg->transop_timeout = ipr_transop_timeout;
7468 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7469 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7470 else
7471 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7472
44c10138 7473 ioa_cfg->revid = pdev->revision;
463fc696 7474
1da177e4
LT		 7475 ipr_regs_pci = pci_resource_start(pdev, 0);
7476
7477 rc = pci_request_regions(pdev, IPR_NAME);
7478 if (rc < 0) {
7479 dev_err(&pdev->dev,
7480 "Couldn't register memory range of registers\n");
7481 goto out_scsi_host_put;
7482 }
7483
7484 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7485
7486 if (!ipr_regs) {
7487 dev_err(&pdev->dev,
7488 "Couldn't map memory range of registers\n");
7489 rc = -ENOMEM;
7490 goto out_release_regions;
7491 }
7492
7493 ioa_cfg->hdw_dma_regs = ipr_regs;
7494 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7495 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7496
7497 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7498
7499 pci_set_master(pdev);
7500
7501 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7502 if (rc < 0) {
7503 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7504 goto cleanup_nomem;
7505 }
7506
7507 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7508 ioa_cfg->chip_cfg->cache_line_size);
7509
7510 if (rc != PCIBIOS_SUCCESSFUL) {
7511 dev_err(&pdev->dev, "Write of cache line size failed\n");
7512 rc = -EIO;
7513 goto cleanup_nomem;
7514 }
7515
7516 /* Save away PCI config space for use following IOA reset */
7517 rc = pci_save_state(pdev);
7518
7519 if (rc != PCIBIOS_SUCCESSFUL) {
7520 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7521 rc = -EIO;
7522 goto cleanup_nomem;
7523 }
7524
7525 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7526 goto cleanup_nomem;
7527
7528 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7529 goto cleanup_nomem;
7530
7531 rc = ipr_alloc_mem(ioa_cfg);
7532 if (rc < 0) {
7533 dev_err(&pdev->dev,
7534 "Couldn't allocate enough memory for device driver!\n");
7535 goto cleanup_nomem;
7536 }
7537
ce155cce
BK		 7538 /*
7539 * If HRRQ updated interrupt is not masked, or reset alert is set,
7540 * the card is in an unknown state and needs a hard reset
7541 */
7542 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7543 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7544 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7545 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7546 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7547 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7548 ioa_cfg->needs_hard_reset = 1;
7549 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7550 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7551
1da177e4 7552 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7553 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7554
7555 if (rc) {
7556 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7557 pdev->irq, rc);
7558 goto cleanup_nolog;
7559 }
7560
463fc696
BK		 7561 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7562 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7563 ioa_cfg->needs_warm_reset = 1;
7564 ioa_cfg->reset = ipr_reset_slot_reset;
7565 } else
7566 ioa_cfg->reset = ipr_reset_start_bist;
7567
1da177e4
LT		 7568 spin_lock(&ipr_driver_lock);
7569 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7570 spin_unlock(&ipr_driver_lock);
7571
7572 LEAVE;
7573out:
7574 return rc;
7575
7576cleanup_nolog:
7577 ipr_free_mem(ioa_cfg);
7578cleanup_nomem:
7579 iounmap(ipr_regs);
7580out_release_regions:
7581 pci_release_regions(pdev);
7582out_scsi_host_put:
7583 scsi_host_put(host);
7584out_disable:
7585 pci_disable_device(pdev);
7586 goto out;
7587}
7588
7589/**
7590 * ipr_scan_vsets - Scans for VSET devices
7591 * @ioa_cfg: ioa config struct
7592 *
7593 * Description: Since the VSET resources do not follow SAM in that we can have
7594 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7595 *
7596 * Return value:
7597 * none
7598 **/
7599static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7600{
7601 int target, lun;
7602
7603 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7604 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7605 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7606}
7607
7608/**
7609 * ipr_initiate_ioa_bringdown - Bring down an adapter
7610 * @ioa_cfg: ioa config struct
7611 * @shutdown_type: shutdown type
7612 *
7613 * Description: This function will initiate bringing down the adapter.
7614 * This consists of issuing an IOA shutdown to the adapter
7615 * to flush the cache, and running BIST.
7616 * If the caller needs to wait on the completion of the reset,
7617 * the caller must sleep on the reset_wait_q.
7618 *
7619 * Return value:
7620 * none
7621 **/
7622static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7623 enum ipr_shutdown_type shutdown_type)
7624{
7625 ENTER;
7626 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7627 ioa_cfg->sdt_state = ABORT_DUMP;
7628 ioa_cfg->reset_retries = 0;
7629 ioa_cfg->in_ioa_bringdown = 1;
7630 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7631 LEAVE;
7632}
7633
7634/**
7635 * __ipr_remove - Remove a single adapter
7636 * @pdev: pci device struct
7637 *
7638 * Adapter hot plug remove entry point.
7639 *
7640 * Return value:
7641 * none
7642 **/
7643static void __ipr_remove(struct pci_dev *pdev)
7644{
7645 unsigned long host_lock_flags = 0;
7646 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7647 ENTER;
7648
7649 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7650 while(ioa_cfg->in_reset_reload) {
7651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7652 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7653 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7654 }
7655
1da177e4
LT		 7656 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7657
7658 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7659 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7660 flush_scheduled_work();
1da177e4
LT		 7661 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7662
7663 spin_lock(&ipr_driver_lock);
7664 list_del(&ioa_cfg->queue);
7665 spin_unlock(&ipr_driver_lock);
7666
7667 if (ioa_cfg->sdt_state == ABORT_DUMP)
7668 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7669 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7670
7671 ipr_free_all_resources(ioa_cfg);
7672
7673 LEAVE;
7674}
7675
7676/**
7677 * ipr_remove - IOA hot plug remove entry point
7678 * @pdev: pci device struct
7679 *
7680 * Adapter hot plug remove entry point.
7681 *
7682 * Return value:
7683 * none
7684 **/
7685static void ipr_remove(struct pci_dev *pdev)
7686{
7687 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7688
7689 ENTER;
7690
1da177e4
LT		 7691 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7692 &ipr_trace_attr);
7693 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7694 &ipr_dump_attr);
7695 scsi_remove_host(ioa_cfg->host);
7696
7697 __ipr_remove(pdev);
7698
7699 LEAVE;
7700}
7701
7702/**
7703 * ipr_probe - Adapter hot plug add entry point
7704 *
7705 * Return value:
7706 * 0 on success / non-zero on failure
7707 **/
7708static int __devinit ipr_probe(struct pci_dev *pdev,
7709 const struct pci_device_id *dev_id)
7710{
7711 struct ipr_ioa_cfg *ioa_cfg;
7712 int rc;
7713
7714 rc = ipr_probe_ioa(pdev, dev_id);
7715
7716 if (rc)
7717 return rc;
7718
7719 ioa_cfg = pci_get_drvdata(pdev);
7720 rc = ipr_probe_ioa_part2(ioa_cfg);
7721
7722 if (rc) {
7723 __ipr_remove(pdev);
7724 return rc;
7725 }
7726
7727 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7728
7729 if (rc) {
7730 __ipr_remove(pdev);
7731 return rc;
7732 }
7733
7734 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7735 &ipr_trace_attr);
7736
7737 if (rc) {
7738 scsi_remove_host(ioa_cfg->host);
7739 __ipr_remove(pdev);
7740 return rc;
7741 }
7742
7743 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7744 &ipr_dump_attr);
7745
7746 if (rc) {
7747 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7748 &ipr_trace_attr);
7749 scsi_remove_host(ioa_cfg->host);
7750 __ipr_remove(pdev);
7751 return rc;
7752 }
7753
7754 scsi_scan_host(ioa_cfg->host);
7755 ipr_scan_vsets(ioa_cfg);
7756 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7757 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7758 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7759 schedule_work(&ioa_cfg->work_q);
7760 return 0;
7761}
7762
7763/**
7764 * ipr_shutdown - Shutdown handler.
d18c3db5 7765 * @pdev: pci device struct
1da177e4
LT		 7766 *
7767 * This function is invoked upon system shutdown/reboot. It will issue
7768 * an adapter shutdown to the adapter to flush the write cache.
7769 *
7770 * Return value:
7771 * none
7772 **/
d18c3db5 7773static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7774{
d18c3db5 7775 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7776 unsigned long lock_flags = 0;
7777
7778 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7779 while(ioa_cfg->in_reset_reload) {
7780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7781 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7783 }
7784
1da177e4
LT		 7785 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7788}
7789
7790static struct pci_device_id ipr_pci_table[] __devinitdata = {
7791 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7792 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7793 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7794 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7795 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7796 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7797 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7798 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7799 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7800 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7801 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7803 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7805 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7806 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7807 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7808 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7810 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_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_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7814 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7815 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7816 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7818 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7819 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7820 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7821 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7822 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7823 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7824 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7826 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7827 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7829 IPR_USE_LONG_TRANSOP_TIMEOUT },
7830 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7832 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7834 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7835 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7837 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7838 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7839 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7840 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7841 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7842 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7843 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7844 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7845 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7846 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7847 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7848 { }
7849};
7850MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7851
f8a88b19
LV		 7852static struct pci_error_handlers ipr_err_handler = {
7853 .error_detected = ipr_pci_error_detected,
7854 .slot_reset = ipr_pci_slot_reset,
7855};
7856
1da177e4
LT		 7857static struct pci_driver ipr_driver = {
7858 .name = IPR_NAME,
7859 .id_table = ipr_pci_table,
7860 .probe = ipr_probe,
7861 .remove = ipr_remove,
d18c3db5 7862 .shutdown = ipr_shutdown,
f8a88b19 7863 .err_handler = &ipr_err_handler,
68c96e59 7864 .dynids.use_driver_data = 1
1da177e4
LT		 7865};
7866
7867/**
7868 * ipr_init - Module entry point
7869 *
7870 * Return value:
7871 * 0 on success / negative value on failure
7872 **/
7873static int __init ipr_init(void)
7874{
7875 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7876 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7877
dcbccbde 7878 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7879}
7880
7881/**
7882 * ipr_exit - Module unload
7883 *
7884 * Module unload entry point.
7885 *
7886 * Return value:
7887 * none
7888 **/
7889static void __exit ipr_exit(void)
7890{
7891 pci_unregister_driver(&ipr_driver);
7892}
7893
7894module_init(ipr_init);
7895module_exit(ipr_exit);
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