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1da177e4
LT		 1/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
1da177e4
LT		 57#include <linux/fs.h>
58#include <linux/init.h>
59#include <linux/types.h>
60#include <linux/errno.h>
61#include <linux/kernel.h>
62#include <linux/ioport.h>
63#include <linux/delay.h>
64#include <linux/pci.h>
65#include <linux/wait.h>
66#include <linux/spinlock.h>
67#include <linux/sched.h>
68#include <linux/interrupt.h>
69#include <linux/blkdev.h>
70#include <linux/firmware.h>
71#include <linux/module.h>
72#include <linux/moduleparam.h>
35a39691 73#include <linux/libata.h>
1da177e4
LT		 74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
1da177e4
LT		 82#include "ipr.h"
83
84/*
85 * Global Data
86 */
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
542/**
543 * ipr_unmap_sglist - Unmap scatterlist if mapped
544 * @ioa_cfg: ioa config struct
545 * @ipr_cmd: ipr command struct
546 *
547 * Return value:
548 * nothing
549 **/
550static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
551 struct ipr_cmnd *ipr_cmd)
552{
553 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
554
555 if (ipr_cmd->dma_use_sg) {
556 if (scsi_cmd->use_sg > 0) {
557 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
558 scsi_cmd->use_sg,
559 scsi_cmd->sc_data_direction);
560 } else {
561 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
562 scsi_cmd->request_bufflen,
563 scsi_cmd->sc_data_direction);
564 }
565 }
566}
567
568/**
569 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
570 * @ioa_cfg: ioa config struct
571 * @clr_ints: interrupts to clear
572 *
573 * This function masks all interrupts on the adapter, then clears the
574 * interrupts specified in the mask
575 *
576 * Return value:
577 * none
578 **/
579static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
580 u32 clr_ints)
581{
582 volatile u32 int_reg;
583
584 /* Stop new interrupts */
585 ioa_cfg->allow_interrupts = 0;
586
587 /* Set interrupt mask to stop all new interrupts */
588 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
589
590 /* Clear any pending interrupts */
591 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
592 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
593}
594
595/**
596 * ipr_save_pcix_cmd_reg - Save PCI-X command register
597 * @ioa_cfg: ioa config struct
598 *
599 * Return value:
600 * 0 on success / -EIO on failure
601 **/
602static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
603{
604 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
605
7dce0e1c
BK		 606 if (pcix_cmd_reg == 0)
607 return 0;
1da177e4
LT		 608
609 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
610 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
611 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
612 return -EIO;
613 }
614
615 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
616 return 0;
617}
618
619/**
620 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
621 * @ioa_cfg: ioa config struct
622 *
623 * Return value:
624 * 0 on success / -EIO on failure
625 **/
626static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
627{
628 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
629
630 if (pcix_cmd_reg) {
631 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
632 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
633 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
634 return -EIO;
635 }
1da177e4
LT		 636 }
637
638 return 0;
639}
640
35a39691
BK		 641/**
642 * ipr_sata_eh_done - done function for aborted SATA commands
643 * @ipr_cmd: ipr command struct
644 *
645 * This function is invoked for ops generated to SATA
646 * devices which are being aborted.
647 *
648 * Return value:
649 * none
650 **/
651static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
652{
653 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
654 struct ata_queued_cmd *qc = ipr_cmd->qc;
655 struct ipr_sata_port *sata_port = qc->ap->private_data;
656
657 qc->err_mask |= AC_ERR_OTHER;
658 sata_port->ioasa.status |= ATA_BUSY;
659 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
660 ata_qc_complete(qc);
661}
662
1da177e4
LT		 663/**
664 * ipr_scsi_eh_done - mid-layer done function for aborted ops
665 * @ipr_cmd: ipr command struct
666 *
667 * This function is invoked by the interrupt handler for
668 * ops generated by the SCSI mid-layer which are being aborted.
669 *
670 * Return value:
671 * none
672 **/
673static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
674{
675 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
676 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
677
678 scsi_cmd->result |= (DID_ERROR << 16);
679
680 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
681 scsi_cmd->scsi_done(scsi_cmd);
682 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
683}
684
685/**
686 * ipr_fail_all_ops - Fails all outstanding ops.
687 * @ioa_cfg: ioa config struct
688 *
689 * This function fails all outstanding ops.
690 *
691 * Return value:
692 * none
693 **/
694static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
695{
696 struct ipr_cmnd *ipr_cmd, *temp;
697
698 ENTER;
699 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
700 list_del(&ipr_cmd->queue);
701
702 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
703 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
704
705 if (ipr_cmd->scsi_cmd)
706 ipr_cmd->done = ipr_scsi_eh_done;
35a39691
BK		 707 else if (ipr_cmd->qc)
708 ipr_cmd->done = ipr_sata_eh_done;
1da177e4
LT		 709
710 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
711 del_timer(&ipr_cmd->timer);
712 ipr_cmd->done(ipr_cmd);
713 }
714
715 LEAVE;
716}
717
718/**
719 * ipr_do_req - Send driver initiated requests.
720 * @ipr_cmd: ipr command struct
721 * @done: done function
722 * @timeout_func: timeout function
723 * @timeout: timeout value
724 *
725 * This function sends the specified command to the adapter with the
726 * timeout given. The done function is invoked on command completion.
727 *
728 * Return value:
729 * none
730 **/
731static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
732 void (*done) (struct ipr_cmnd *),
733 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
734{
735 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
736
737 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
738
739 ipr_cmd->done = done;
740
741 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
742 ipr_cmd->timer.expires = jiffies + timeout;
743 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
744
745 add_timer(&ipr_cmd->timer);
746
747 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
748
749 mb();
750 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
751 ioa_cfg->regs.ioarrin_reg);
752}
753
754/**
755 * ipr_internal_cmd_done - Op done function for an internally generated op.
756 * @ipr_cmd: ipr command struct
757 *
758 * This function is the op done function for an internally generated,
759 * blocking op. It simply wakes the sleeping thread.
760 *
761 * Return value:
762 * none
763 **/
764static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
765{
766 if (ipr_cmd->sibling)
767 ipr_cmd->sibling = NULL;
768 else
769 complete(&ipr_cmd->completion);
770}
771
772/**
773 * ipr_send_blocking_cmd - Send command and sleep on its completion.
774 * @ipr_cmd: ipr command struct
775 * @timeout_func: function to invoke if command times out
776 * @timeout: timeout
777 *
778 * Return value:
779 * none
780 **/
781static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
782 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
783 u32 timeout)
784{
785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
786
787 init_completion(&ipr_cmd->completion);
788 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
789
790 spin_unlock_irq(ioa_cfg->host->host_lock);
791 wait_for_completion(&ipr_cmd->completion);
792 spin_lock_irq(ioa_cfg->host->host_lock);
793}
794
795/**
796 * ipr_send_hcam - Send an HCAM to the adapter.
797 * @ioa_cfg: ioa config struct
798 * @type: HCAM type
799 * @hostrcb: hostrcb struct
800 *
801 * This function will send a Host Controlled Async command to the adapter.
802 * If HCAMs are currently not allowed to be issued to the adapter, it will
803 * place the hostrcb on the free queue.
804 *
805 * Return value:
806 * none
807 **/
808static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
809 struct ipr_hostrcb *hostrcb)
810{
811 struct ipr_cmnd *ipr_cmd;
812 struct ipr_ioarcb *ioarcb;
813
814 if (ioa_cfg->allow_cmds) {
815 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
816 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
817 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
818
819 ipr_cmd->u.hostrcb = hostrcb;
820 ioarcb = &ipr_cmd->ioarcb;
821
822 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
823 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
824 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
825 ioarcb->cmd_pkt.cdb[1] = type;
826 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
827 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
828
829 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
830 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
831 ipr_cmd->ioadl[0].flags_and_data_len =
832 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
833 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
834
835 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
836 ipr_cmd->done = ipr_process_ccn;
837 else
838 ipr_cmd->done = ipr_process_error;
839
840 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
841
842 mb();
843 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
844 ioa_cfg->regs.ioarrin_reg);
845 } else {
846 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
847 }
848}
849
850/**
851 * ipr_init_res_entry - Initialize a resource entry struct.
852 * @res: resource entry struct
853 *
854 * Return value:
855 * none
856 **/
857static void ipr_init_res_entry(struct ipr_resource_entry *res)
858{
ee0a90fa 859 res->needs_sync_complete = 0;
1da177e4
LT		 860 res->in_erp = 0;
861 res->add_to_ml = 0;
862 res->del_from_ml = 0;
863 res->resetting_device = 0;
864 res->sdev = NULL;
35a39691 865 res->sata_port = NULL;
1da177e4
LT		 866}
867
868/**
869 * ipr_handle_config_change - Handle a config change from the adapter
870 * @ioa_cfg: ioa config struct
871 * @hostrcb: hostrcb
872 *
873 * Return value:
874 * none
875 **/
876static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
877 struct ipr_hostrcb *hostrcb)
878{
879 struct ipr_resource_entry *res = NULL;
880 struct ipr_config_table_entry *cfgte;
881 u32 is_ndn = 1;
882
883 cfgte = &hostrcb->hcam.u.ccn.cfgte;
884
885 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
886 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
887 sizeof(cfgte->res_addr))) {
888 is_ndn = 0;
889 break;
890 }
891 }
892
893 if (is_ndn) {
894 if (list_empty(&ioa_cfg->free_res_q)) {
895 ipr_send_hcam(ioa_cfg,
896 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
897 hostrcb);
898 return;
899 }
900
901 res = list_entry(ioa_cfg->free_res_q.next,
902 struct ipr_resource_entry, queue);
903
904 list_del(&res->queue);
905 ipr_init_res_entry(res);
906 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
907 }
908
909 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
910
911 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
912 if (res->sdev) {
1da177e4 913 res->del_from_ml = 1;
1121b794 914 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 915 if (ioa_cfg->allow_ml_add_del)
916 schedule_work(&ioa_cfg->work_q);
917 } else
918 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
919 } else if (!res->sdev) {
920 res->add_to_ml = 1;
921 if (ioa_cfg->allow_ml_add_del)
922 schedule_work(&ioa_cfg->work_q);
923 }
924
925 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
926}
927
928/**
929 * ipr_process_ccn - Op done function for a CCN.
930 * @ipr_cmd: ipr command struct
931 *
932 * This function is the op done function for a configuration
933 * change notification host controlled async from the adapter.
934 *
935 * Return value:
936 * none
937 **/
938static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
939{
940 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
941 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
942 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
943
944 list_del(&hostrcb->queue);
945 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
946
947 if (ioasc) {
948 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
949 dev_err(&ioa_cfg->pdev->dev,
950 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
951
952 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
953 } else {
954 ipr_handle_config_change(ioa_cfg, hostrcb);
955 }
956}
957
8cf093e2
BK		 958/**
959 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
960 * @i: index into buffer
961 * @buf: string to modify
962 *
963 * This function will strip all trailing whitespace, pad the end
964 * of the string with a single space, and NULL terminate the string.
965 *
966 * Return value:
967 * new length of string
968 **/
969static int strip_and_pad_whitespace(int i, char *buf)
970{
971 while (i && buf[i] == ' ')
972 i--;
973 buf[i+1] = ' ';
974 buf[i+2] = '\0';
975 return i + 2;
976}
977
978/**
979 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
980 * @prefix: string to print at start of printk
981 * @hostrcb: hostrcb pointer
982 * @vpd: vendor/product id/sn struct
983 *
984 * Return value:
985 * none
986 **/
987static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
988 struct ipr_vpd *vpd)
989{
990 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
991 int i = 0;
992
993 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
994 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
995
996 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
997 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
998
999 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1000 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1001
1002 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1003}
1004
1da177e4
LT		 1005/**
1006 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 1007 * @vpd: vendor/product id/sn struct
1da177e4
LT		 1008 *
1009 * Return value:
1010 * none
1011 **/
cfc32139 1012static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 1013{
1014 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1015 + IPR_SERIAL_NUM_LEN];
1016
cfc32139
BK		 1017 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1018 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 1019 IPR_PROD_ID_LEN);
1020 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1021 ipr_err("Vendor/Product ID: %s\n", buffer);
1022
cfc32139 1023 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 1024 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1025 ipr_err(" Serial Number: %s\n", buffer);
1026}
1027
8cf093e2
BK		 1028/**
1029 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1030 * @prefix: string to print at start of printk
1031 * @hostrcb: hostrcb pointer
1032 * @vpd: vendor/product id/sn/wwn struct
1033 *
1034 * Return value:
1035 * none
1036 **/
1037static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1038 struct ipr_ext_vpd *vpd)
1039{
1040 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1041 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1042 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1043}
1044
ee0f05b8
BK		 1045/**
1046 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1047 * @vpd: vendor/product id/sn/wwn struct
1048 *
1049 * Return value:
1050 * none
1051 **/
1052static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1053{
1054 ipr_log_vpd(&vpd->vpd);
1055 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1056 be32_to_cpu(vpd->wwid[1]));
1057}
1058
1059/**
1060 * ipr_log_enhanced_cache_error - Log a cache error.
1061 * @ioa_cfg: ioa config struct
1062 * @hostrcb: hostrcb struct
1063 *
1064 * Return value:
1065 * none
1066 **/
1067static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1068 struct ipr_hostrcb *hostrcb)
1069{
1070 struct ipr_hostrcb_type_12_error *error =
1071 &hostrcb->hcam.u.error.u.type_12_error;
1072
1073 ipr_err("-----Current Configuration-----\n");
1074 ipr_err("Cache Directory Card Information:\n");
1075 ipr_log_ext_vpd(&error->ioa_vpd);
1076 ipr_err("Adapter Card Information:\n");
1077 ipr_log_ext_vpd(&error->cfc_vpd);
1078
1079 ipr_err("-----Expected Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
1081 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1082 ipr_err("Adapter Card Information:\n");
1083 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1084
1085 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1086 be32_to_cpu(error->ioa_data[0]),
1087 be32_to_cpu(error->ioa_data[1]),
1088 be32_to_cpu(error->ioa_data[2]));
1089}
1090
1da177e4
LT		 1091/**
1092 * ipr_log_cache_error - Log a cache error.
1093 * @ioa_cfg: ioa config struct
1094 * @hostrcb: hostrcb struct
1095 *
1096 * Return value:
1097 * none
1098 **/
1099static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1100 struct ipr_hostrcb *hostrcb)
1101{
1102 struct ipr_hostrcb_type_02_error *error =
1103 &hostrcb->hcam.u.error.u.type_02_error;
1104
1105 ipr_err("-----Current Configuration-----\n");
1106 ipr_err("Cache Directory Card Information:\n");
cfc32139 1107 ipr_log_vpd(&error->ioa_vpd);
1da177e4 1108 ipr_err("Adapter Card Information:\n");
cfc32139 1109 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 1110
1111 ipr_err("-----Expected Configuration-----\n");
1112 ipr_err("Cache Directory Card Information:\n");
cfc32139 1113 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 1114 ipr_err("Adapter Card Information:\n");
cfc32139 1115 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 1116
1117 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1118 be32_to_cpu(error->ioa_data[0]),
1119 be32_to_cpu(error->ioa_data[1]),
1120 be32_to_cpu(error->ioa_data[2]));
1121}
1122
ee0f05b8
BK		 1123/**
1124 * ipr_log_enhanced_config_error - Log a configuration error.
1125 * @ioa_cfg: ioa config struct
1126 * @hostrcb: hostrcb struct
1127 *
1128 * Return value:
1129 * none
1130 **/
1131static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1132 struct ipr_hostrcb *hostrcb)
1133{
1134 int errors_logged, i;
1135 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1136 struct ipr_hostrcb_type_13_error *error;
1137
1138 error = &hostrcb->hcam.u.error.u.type_13_error;
1139 errors_logged = be32_to_cpu(error->errors_logged);
1140
1141 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1142 be32_to_cpu(error->errors_detected), errors_logged);
1143
1144 dev_entry = error->dev;
1145
1146 for (i = 0; i < errors_logged; i++, dev_entry++) {
1147 ipr_err_separator;
1148
1149 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1150 ipr_log_ext_vpd(&dev_entry->vpd);
1151
1152 ipr_err("-----New Device Information-----\n");
1153 ipr_log_ext_vpd(&dev_entry->new_vpd);
1154
1155 ipr_err("Cache Directory Card Information:\n");
1156 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1157
1158 ipr_err("Adapter Card Information:\n");
1159 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1160 }
1161}
1162
1da177e4
LT		 1163/**
1164 * ipr_log_config_error - Log a configuration error.
1165 * @ioa_cfg: ioa config struct
1166 * @hostrcb: hostrcb struct
1167 *
1168 * Return value:
1169 * none
1170 **/
1171static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1172 struct ipr_hostrcb *hostrcb)
1173{
1174 int errors_logged, i;
1175 struct ipr_hostrcb_device_data_entry *dev_entry;
1176 struct ipr_hostrcb_type_03_error *error;
1177
1178 error = &hostrcb->hcam.u.error.u.type_03_error;
1179 errors_logged = be32_to_cpu(error->errors_logged);
1180
1181 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1182 be32_to_cpu(error->errors_detected), errors_logged);
1183
cfc32139 1184 dev_entry = error->dev;
1da177e4
LT		 1185
1186 for (i = 0; i < errors_logged; i++, dev_entry++) {
1187 ipr_err_separator;
1188
fa15b1f6 1189 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 1190 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 1191
1192 ipr_err("-----New Device Information-----\n");
cfc32139 1193 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 1194
1195 ipr_err("Cache Directory Card Information:\n");
cfc32139 1196 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 1197
1198 ipr_err("Adapter Card Information:\n");
cfc32139 1199 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 1200
1201 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1202 be32_to_cpu(dev_entry->ioa_data[0]),
1203 be32_to_cpu(dev_entry->ioa_data[1]),
1204 be32_to_cpu(dev_entry->ioa_data[2]),
1205 be32_to_cpu(dev_entry->ioa_data[3]),
1206 be32_to_cpu(dev_entry->ioa_data[4]));
1207 }
1208}
1209
ee0f05b8
BK		 1210/**
1211 * ipr_log_enhanced_array_error - Log an array configuration error.
1212 * @ioa_cfg: ioa config struct
1213 * @hostrcb: hostrcb struct
1214 *
1215 * Return value:
1216 * none
1217 **/
1218static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1219 struct ipr_hostrcb *hostrcb)
1220{
1221 int i, num_entries;
1222 struct ipr_hostrcb_type_14_error *error;
1223 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1224 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1225
1226 error = &hostrcb->hcam.u.error.u.type_14_error;
1227
1228 ipr_err_separator;
1229
1230 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1231 error->protection_level,
1232 ioa_cfg->host->host_no,
1233 error->last_func_vset_res_addr.bus,
1234 error->last_func_vset_res_addr.target,
1235 error->last_func_vset_res_addr.lun);
1236
1237 ipr_err_separator;
1238
1239 array_entry = error->array_member;
1240 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1241 sizeof(error->array_member));
1242
1243 for (i = 0; i < num_entries; i++, array_entry++) {
1244 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1245 continue;
1246
1247 if (be32_to_cpu(error->exposed_mode_adn) == i)
1248 ipr_err("Exposed Array Member %d:\n", i);
1249 else
1250 ipr_err("Array Member %d:\n", i);
1251
1252 ipr_log_ext_vpd(&array_entry->vpd);
1253 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1254 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1255 "Expected Location");
1256
1257 ipr_err_separator;
1258 }
1259}
1260
1da177e4
LT		 1261/**
1262 * ipr_log_array_error - Log an array configuration error.
1263 * @ioa_cfg: ioa config struct
1264 * @hostrcb: hostrcb struct
1265 *
1266 * Return value:
1267 * none
1268 **/
1269static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1270 struct ipr_hostrcb *hostrcb)
1271{
1272 int i;
1273 struct ipr_hostrcb_type_04_error *error;
1274 struct ipr_hostrcb_array_data_entry *array_entry;
1275 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1276
1277 error = &hostrcb->hcam.u.error.u.type_04_error;
1278
1279 ipr_err_separator;
1280
1281 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1282 error->protection_level,
1283 ioa_cfg->host->host_no,
1284 error->last_func_vset_res_addr.bus,
1285 error->last_func_vset_res_addr.target,
1286 error->last_func_vset_res_addr.lun);
1287
1288 ipr_err_separator;
1289
1290 array_entry = error->array_member;
1291
1292 for (i = 0; i < 18; i++) {
cfc32139 1293 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1294 continue;
1295
fa15b1f6 1296 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1297 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1298 else
1da177e4 1299 ipr_err("Array Member %d:\n", i);
1da177e4 1300
cfc32139 1301 ipr_log_vpd(&array_entry->vpd);
1da177e4 1302
fa15b1f6
BK		 1303 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1304 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1305 "Expected Location");
1da177e4
LT		 1306
1307 ipr_err_separator;
1308
1309 if (i == 9)
1310 array_entry = error->array_member2;
1311 else
1312 array_entry++;
1313 }
1314}
1315
1316/**
b0df54bb 1317 * ipr_log_hex_data - Log additional hex IOA error data.
ac719aba 1318 * @ioa_cfg: ioa config struct
b0df54bb
BK		 1319 * @data: IOA error data
1320 * @len: data length
1da177e4
LT		 1321 *
1322 * Return value:
1323 * none
1324 **/
ac719aba 1325static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1da177e4
LT		 1326{
1327 int i;
1da177e4 1328
b0df54bb 1329 if (len == 0)
1da177e4
LT		 1330 return;
1331
ac719aba
BK		 1332 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1333 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1334
b0df54bb 1335 for (i = 0; i < len / 4; i += 4) {
1da177e4 1336 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
b0df54bb
BK		 1337 be32_to_cpu(data[i]),
1338 be32_to_cpu(data[i+1]),
1339 be32_to_cpu(data[i+2]),
1340 be32_to_cpu(data[i+3]));
1da177e4
LT		 1341 }
1342}
1343
ee0f05b8
BK		 1344/**
1345 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354{
1355 struct ipr_hostrcb_type_17_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_17_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1359 strstrip(error->failure_reason);
ee0f05b8 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_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1364 ipr_log_hex_data(ioa_cfg, error->data,
ee0f05b8
BK		 1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_17_error, data)));
1368}
1369
b0df54bb
BK		 1370/**
1371 * ipr_log_dual_ioa_error - Log a dual adapter error.
1372 * @ioa_cfg: ioa config struct
1373 * @hostrcb: hostrcb struct
1374 *
1375 * Return value:
1376 * none
1377 **/
1378static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1379 struct ipr_hostrcb *hostrcb)
1380{
1381 struct ipr_hostrcb_type_07_error *error;
1382
1383 error = &hostrcb->hcam.u.error.u.type_07_error;
1384 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
8cf093e2 1385 strstrip(error->failure_reason);
b0df54bb 1386
8cf093e2
BK		 1387 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1388 be32_to_cpu(hostrcb->hcam.u.error.prc));
1389 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
ac719aba 1390 ipr_log_hex_data(ioa_cfg, error->data,
b0df54bb
BK		 1391 be32_to_cpu(hostrcb->hcam.length) -
1392 (offsetof(struct ipr_hostrcb_error, u) +
1393 offsetof(struct ipr_hostrcb_type_07_error, data)));
1394}
1395
49dc6a18
BK		 1396static const struct {
1397 u8 active;
1398 char *desc;
1399} path_active_desc[] = {
1400 { IPR_PATH_NO_INFO, "Path" },
1401 { IPR_PATH_ACTIVE, "Active path" },
1402 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1403};
1404
1405static const struct {
1406 u8 state;
1407 char *desc;
1408} path_state_desc[] = {
1409 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1410 { IPR_PATH_HEALTHY, "is healthy" },
1411 { IPR_PATH_DEGRADED, "is degraded" },
1412 { IPR_PATH_FAILED, "is failed" }
1413};
1414
1415/**
1416 * ipr_log_fabric_path - Log a fabric path error
1417 * @hostrcb: hostrcb struct
1418 * @fabric: fabric descriptor
1419 *
1420 * Return value:
1421 * none
1422 **/
1423static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1424 struct ipr_hostrcb_fabric_desc *fabric)
1425{
1426 int i, j;
1427 u8 path_state = fabric->path_state;
1428 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1429 u8 state = path_state & IPR_PATH_STATE_MASK;
1430
1431 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1432 if (path_active_desc[i].active != active)
1433 continue;
1434
1435 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1436 if (path_state_desc[j].state != state)
1437 continue;
1438
1439 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1440 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1441 path_active_desc[i].desc, path_state_desc[j].desc,
1442 fabric->ioa_port);
1443 } else if (fabric->cascaded_expander == 0xff) {
1444 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1445 path_active_desc[i].desc, path_state_desc[j].desc,
1446 fabric->ioa_port, fabric->phy);
1447 } else if (fabric->phy == 0xff) {
1448 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1449 path_active_desc[i].desc, path_state_desc[j].desc,
1450 fabric->ioa_port, fabric->cascaded_expander);
1451 } else {
1452 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1453 path_active_desc[i].desc, path_state_desc[j].desc,
1454 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1455 }
1456 return;
1457 }
1458 }
1459
1460 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1461 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1462}
1463
1464static const struct {
1465 u8 type;
1466 char *desc;
1467} path_type_desc[] = {
1468 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1469 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1470 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1471 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1472};
1473
1474static const struct {
1475 u8 status;
1476 char *desc;
1477} path_status_desc[] = {
1478 { IPR_PATH_CFG_NO_PROB, "Functional" },
1479 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1480 { IPR_PATH_CFG_FAILED, "Failed" },
1481 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1482 { IPR_PATH_NOT_DETECTED, "Missing" },
1483 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1484};
1485
1486static const char *link_rate[] = {
1487 "unknown",
1488 "disabled",
1489 "phy reset problem",
1490 "spinup hold",
1491 "port selector",
1492 "unknown",
1493 "unknown",
1494 "unknown",
1495 "1.5Gbps",
1496 "3.0Gbps",
1497 "unknown",
1498 "unknown",
1499 "unknown",
1500 "unknown",
1501 "unknown",
1502 "unknown"
1503};
1504
1505/**
1506 * ipr_log_path_elem - Log a fabric path element.
1507 * @hostrcb: hostrcb struct
1508 * @cfg: fabric path element struct
1509 *
1510 * Return value:
1511 * none
1512 **/
1513static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1514 struct ipr_hostrcb_config_element *cfg)
1515{
1516 int i, j;
1517 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1518 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1519
1520 if (type == IPR_PATH_CFG_NOT_EXIST)
1521 return;
1522
1523 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1524 if (path_type_desc[i].type != type)
1525 continue;
1526
1527 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1528 if (path_status_desc[j].status != status)
1529 continue;
1530
1531 if (type == IPR_PATH_CFG_IOA_PORT) {
1532 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1533 path_status_desc[j].desc, path_type_desc[i].desc,
1534 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1535 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1536 } else {
1537 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1538 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1539 path_status_desc[j].desc, path_type_desc[i].desc,
1540 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1541 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1542 } else if (cfg->cascaded_expander == 0xff) {
1543 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1544 "WWN=%08X%08X\n", path_status_desc[j].desc,
1545 path_type_desc[i].desc, cfg->phy,
1546 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1547 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1548 } else if (cfg->phy == 0xff) {
1549 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1550 "WWN=%08X%08X\n", path_status_desc[j].desc,
1551 path_type_desc[i].desc, cfg->cascaded_expander,
1552 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1553 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1554 } else {
1555 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1556 "WWN=%08X%08X\n", path_status_desc[j].desc,
1557 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1558 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1559 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1560 }
1561 }
1562 return;
1563 }
1564 }
1565
1566 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1567 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1568 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1569 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1570}
1571
1572/**
1573 * ipr_log_fabric_error - Log a fabric error.
1574 * @ioa_cfg: ioa config struct
1575 * @hostrcb: hostrcb struct
1576 *
1577 * Return value:
1578 * none
1579 **/
1580static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1581 struct ipr_hostrcb *hostrcb)
1582{
1583 struct ipr_hostrcb_type_20_error *error;
1584 struct ipr_hostrcb_fabric_desc *fabric;
1585 struct ipr_hostrcb_config_element *cfg;
1586 int i, add_len;
1587
1588 error = &hostrcb->hcam.u.error.u.type_20_error;
1589 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1590 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1591
1592 add_len = be32_to_cpu(hostrcb->hcam.length) -
1593 (offsetof(struct ipr_hostrcb_error, u) +
1594 offsetof(struct ipr_hostrcb_type_20_error, desc));
1595
1596 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1597 ipr_log_fabric_path(hostrcb, fabric);
1598 for_each_fabric_cfg(fabric, cfg)
1599 ipr_log_path_elem(hostrcb, cfg);
1600
1601 add_len -= be16_to_cpu(fabric->length);
1602 fabric = (struct ipr_hostrcb_fabric_desc *)
1603 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1604 }
1605
ac719aba 1606 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
49dc6a18
BK		 1607}
1608
b0df54bb
BK		 1609/**
1610 * ipr_log_generic_error - Log an adapter error.
1611 * @ioa_cfg: ioa config struct
1612 * @hostrcb: hostrcb struct
1613 *
1614 * Return value:
1615 * none
1616 **/
1617static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1618 struct ipr_hostrcb *hostrcb)
1619{
ac719aba 1620 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
b0df54bb
BK		 1621 be32_to_cpu(hostrcb->hcam.length));
1622}
1623
1da177e4
LT		 1624/**
1625 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1626 * @ioasc: IOASC
1627 *
1628 * This function will return the index of into the ipr_error_table
1629 * for the specified IOASC. If the IOASC is not in the table,
1630 * 0 will be returned, which points to the entry used for unknown errors.
1631 *
1632 * Return value:
1633 * index into the ipr_error_table
1634 **/
1635static u32 ipr_get_error(u32 ioasc)
1636{
1637 int i;
1638
1639 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
35a39691 1640 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1da177e4
LT		 1641 return i;
1642
1643 return 0;
1644}
1645
1646/**
1647 * ipr_handle_log_data - Log an adapter error.
1648 * @ioa_cfg: ioa config struct
1649 * @hostrcb: hostrcb struct
1650 *
1651 * This function logs an adapter error to the system.
1652 *
1653 * Return value:
1654 * none
1655 **/
1656static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1657 struct ipr_hostrcb *hostrcb)
1658{
1659 u32 ioasc;
1660 int error_index;
1661
1662 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1663 return;
1664
1665 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1666 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1667
1668 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1669
1670 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1671 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1672 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1673 scsi_report_bus_reset(ioa_cfg->host,
1674 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1675 }
1676
1677 error_index = ipr_get_error(ioasc);
1678
1679 if (!ipr_error_table[error_index].log_hcam)
1680 return;
1681
49dc6a18 1682 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 1683
1684 /* Set indication we have logged an error */
1685 ioa_cfg->errors_logged++;
1686
933916f3 1687 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1da177e4 1688 return;
cf852037
BK		 1689 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1690 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1691
1692 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1693 case IPR_HOST_RCB_OVERLAY_ID_2:
1694 ipr_log_cache_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_3:
1697 ipr_log_config_error(ioa_cfg, hostrcb);
1698 break;
1699 case IPR_HOST_RCB_OVERLAY_ID_4:
1700 case IPR_HOST_RCB_OVERLAY_ID_6:
1701 ipr_log_array_error(ioa_cfg, hostrcb);
1702 break;
b0df54bb
BK		 1703 case IPR_HOST_RCB_OVERLAY_ID_7:
1704 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1705 break;
ee0f05b8
BK		 1706 case IPR_HOST_RCB_OVERLAY_ID_12:
1707 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1708 break;
1709 case IPR_HOST_RCB_OVERLAY_ID_13:
1710 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1711 break;
1712 case IPR_HOST_RCB_OVERLAY_ID_14:
1713 case IPR_HOST_RCB_OVERLAY_ID_16:
1714 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1715 break;
1716 case IPR_HOST_RCB_OVERLAY_ID_17:
1717 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1718 break;
49dc6a18
BK		 1719 case IPR_HOST_RCB_OVERLAY_ID_20:
1720 ipr_log_fabric_error(ioa_cfg, hostrcb);
1721 break;
cf852037 1722 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1723 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1724 default:
a9cfca96 1725 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1726 break;
1727 }
1728}
1729
1730/**
1731 * ipr_process_error - Op done function for an adapter error log.
1732 * @ipr_cmd: ipr command struct
1733 *
1734 * This function is the op done function for an error log host
1735 * controlled async from the adapter. It will log the error and
1736 * send the HCAM back to the adapter.
1737 *
1738 * Return value:
1739 * none
1740 **/
1741static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1742{
1743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1744 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1745 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
65f56475 1746 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1da177e4
LT		 1747
1748 list_del(&hostrcb->queue);
1749 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1750
1751 if (!ioasc) {
1752 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 1753 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1754 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1da177e4
LT		 1755 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1758 }
1759
1760 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1761}
1762
1763/**
1764 * ipr_timeout - An internally generated op has timed out.
1765 * @ipr_cmd: ipr command struct
1766 *
1767 * This function blocks host requests and initiates an
1768 * adapter reset.
1769 *
1770 * Return value:
1771 * none
1772 **/
1773static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1774{
1775 unsigned long lock_flags = 0;
1776 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1777
1778 ENTER;
1779 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1780
1781 ioa_cfg->errors_logged++;
1782 dev_err(&ioa_cfg->pdev->dev,
1783 "Adapter being reset due to command timeout.\n");
1784
1785 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1786 ioa_cfg->sdt_state = GET_DUMP;
1787
1788 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1789 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1790
1791 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1792 LEAVE;
1793}
1794
1795/**
1796 * ipr_oper_timeout - Adapter timed out transitioning to operational
1797 * @ipr_cmd: ipr command struct
1798 *
1799 * This function blocks host requests and initiates an
1800 * adapter reset.
1801 *
1802 * Return value:
1803 * none
1804 **/
1805static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1806{
1807 unsigned long lock_flags = 0;
1808 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1809
1810 ENTER;
1811 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1812
1813 ioa_cfg->errors_logged++;
1814 dev_err(&ioa_cfg->pdev->dev,
1815 "Adapter timed out transitioning to operational.\n");
1816
1817 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1818 ioa_cfg->sdt_state = GET_DUMP;
1819
1820 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1821 if (ipr_fastfail)
1822 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1823 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1824 }
1825
1826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1827 LEAVE;
1828}
1829
1830/**
1831 * ipr_reset_reload - Reset/Reload the IOA
1832 * @ioa_cfg: ioa config struct
1833 * @shutdown_type: shutdown type
1834 *
1835 * This function resets the adapter and re-initializes it.
1836 * This function assumes that all new host commands have been stopped.
1837 * Return value:
1838 * SUCCESS / FAILED
1839 **/
1840static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1841 enum ipr_shutdown_type shutdown_type)
1842{
1843 if (!ioa_cfg->in_reset_reload)
1844 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1845
1846 spin_unlock_irq(ioa_cfg->host->host_lock);
1847 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1848 spin_lock_irq(ioa_cfg->host->host_lock);
1849
1850 /* If we got hit with a host reset while we were already resetting
1851 the adapter for some reason, and the reset failed. */
1852 if (ioa_cfg->ioa_is_dead) {
1853 ipr_trace;
1854 return FAILED;
1855 }
1856
1857 return SUCCESS;
1858}
1859
1860/**
1861 * ipr_find_ses_entry - Find matching SES in SES table
1862 * @res: resource entry struct of SES
1863 *
1864 * Return value:
1865 * pointer to SES table entry / NULL on failure
1866 **/
1867static const struct ipr_ses_table_entry *
1868ipr_find_ses_entry(struct ipr_resource_entry *res)
1869{
1870 int i, j, matches;
1871 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1872
1873 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1874 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1875 if (ste->compare_product_id_byte[j] == 'X') {
1876 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1877 matches++;
1878 else
1879 break;
1880 } else
1881 matches++;
1882 }
1883
1884 if (matches == IPR_PROD_ID_LEN)
1885 return ste;
1886 }
1887
1888 return NULL;
1889}
1890
1891/**
1892 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1893 * @ioa_cfg: ioa config struct
1894 * @bus: SCSI bus
1895 * @bus_width: bus width
1896 *
1897 * Return value:
1898 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1899 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1900 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1901 * max 160MHz = max 320MB/sec).
1902 **/
1903static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1904{
1905 struct ipr_resource_entry *res;
1906 const struct ipr_ses_table_entry *ste;
1907 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1908
1909 /* Loop through each config table entry in the config table buffer */
1910 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1911 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1912 continue;
1913
1914 if (bus != res->cfgte.res_addr.bus)
1915 continue;
1916
1917 if (!(ste = ipr_find_ses_entry(res)))
1918 continue;
1919
1920 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1921 }
1922
1923 return max_xfer_rate;
1924}
1925
1926/**
1927 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1928 * @ioa_cfg: ioa config struct
1929 * @max_delay: max delay in micro-seconds to wait
1930 *
1931 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1932 *
1933 * Return value:
1934 * 0 on success / other on failure
1935 **/
1936static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1937{
1938 volatile u32 pcii_reg;
1939 int delay = 1;
1940
1941 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1942 while (delay < max_delay) {
1943 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1944
1945 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1946 return 0;
1947
1948 /* udelay cannot be used if delay is more than a few milliseconds */
1949 if ((delay / 1000) > MAX_UDELAY_MS)
1950 mdelay(delay / 1000);
1951 else
1952 udelay(delay);
1953
1954 delay += delay;
1955 }
1956 return -EIO;
1957}
1958
1959/**
1960 * ipr_get_ldump_data_section - Dump IOA memory
1961 * @ioa_cfg: ioa config struct
1962 * @start_addr: adapter address to dump
1963 * @dest: destination kernel buffer
1964 * @length_in_words: length to dump in 4 byte words
1965 *
1966 * Return value:
1967 * 0 on success / -EIO on failure
1968 **/
1969static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1970 u32 start_addr,
1971 __be32 *dest, u32 length_in_words)
1972{
1973 volatile u32 temp_pcii_reg;
1974 int i, delay = 0;
1975
1976 /* Write IOA interrupt reg starting LDUMP state */
1977 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1978 ioa_cfg->regs.set_uproc_interrupt_reg);
1979
1980 /* Wait for IO debug acknowledge */
1981 if (ipr_wait_iodbg_ack(ioa_cfg,
1982 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1983 dev_err(&ioa_cfg->pdev->dev,
1984 "IOA dump long data transfer timeout\n");
1985 return -EIO;
1986 }
1987
1988 /* Signal LDUMP interlocked - clear IO debug ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991
1992 /* Write Mailbox with starting address */
1993 writel(start_addr, ioa_cfg->ioa_mailbox);
1994
1995 /* Signal address valid - clear IOA Reset alert */
1996 writel(IPR_UPROCI_RESET_ALERT,
1997 ioa_cfg->regs.clr_uproc_interrupt_reg);
1998
1999 for (i = 0; i < length_in_words; i++) {
2000 /* Wait for IO debug acknowledge */
2001 if (ipr_wait_iodbg_ack(ioa_cfg,
2002 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2003 dev_err(&ioa_cfg->pdev->dev,
2004 "IOA dump short data transfer timeout\n");
2005 return -EIO;
2006 }
2007
2008 /* Read data from mailbox and increment destination pointer */
2009 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2010 dest++;
2011
2012 /* For all but the last word of data, signal data received */
2013 if (i < (length_in_words - 1)) {
2014 /* Signal dump data received - Clear IO debug Ack */
2015 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2016 ioa_cfg->regs.clr_interrupt_reg);
2017 }
2018 }
2019
2020 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2021 writel(IPR_UPROCI_RESET_ALERT,
2022 ioa_cfg->regs.set_uproc_interrupt_reg);
2023
2024 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2025 ioa_cfg->regs.clr_uproc_interrupt_reg);
2026
2027 /* Signal dump data received - Clear IO debug Ack */
2028 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2029 ioa_cfg->regs.clr_interrupt_reg);
2030
2031 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2032 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2033 temp_pcii_reg =
2034 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2035
2036 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2037 return 0;
2038
2039 udelay(10);
2040 delay += 10;
2041 }
2042
2043 return 0;
2044}
2045
2046#ifdef CONFIG_SCSI_IPR_DUMP
2047/**
2048 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2049 * @ioa_cfg: ioa config struct
2050 * @pci_address: adapter address
2051 * @length: length of data to copy
2052 *
2053 * Copy data from PCI adapter to kernel buffer.
2054 * Note: length MUST be a 4 byte multiple
2055 * Return value:
2056 * 0 on success / other on failure
2057 **/
2058static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2059 unsigned long pci_address, u32 length)
2060{
2061 int bytes_copied = 0;
2062 int cur_len, rc, rem_len, rem_page_len;
2063 __be32 *page;
2064 unsigned long lock_flags = 0;
2065 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2066
2067 while (bytes_copied < length &&
2068 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2069 if (ioa_dump->page_offset >= PAGE_SIZE ||
2070 ioa_dump->page_offset == 0) {
2071 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2072
2073 if (!page) {
2074 ipr_trace;
2075 return bytes_copied;
2076 }
2077
2078 ioa_dump->page_offset = 0;
2079 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2080 ioa_dump->next_page_index++;
2081 } else
2082 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2083
2084 rem_len = length - bytes_copied;
2085 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2086 cur_len = min(rem_len, rem_page_len);
2087
2088 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2089 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2090 rc = -EIO;
2091 } else {
2092 rc = ipr_get_ldump_data_section(ioa_cfg,
2093 pci_address + bytes_copied,
2094 &page[ioa_dump->page_offset / 4],
2095 (cur_len / sizeof(u32)));
2096 }
2097 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2098
2099 if (!rc) {
2100 ioa_dump->page_offset += cur_len;
2101 bytes_copied += cur_len;
2102 } else {
2103 ipr_trace;
2104 break;
2105 }
2106 schedule();
2107 }
2108
2109 return bytes_copied;
2110}
2111
2112/**
2113 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2114 * @hdr: dump entry header struct
2115 *
2116 * Return value:
2117 * nothing
2118 **/
2119static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2120{
2121 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2122 hdr->num_elems = 1;
2123 hdr->offset = sizeof(*hdr);
2124 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2125}
2126
2127/**
2128 * ipr_dump_ioa_type_data - Fill in the adapter type 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_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137{
2138 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2139
2140 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2141 driver_dump->ioa_type_entry.hdr.len =
2142 sizeof(struct ipr_dump_ioa_type_entry) -
2143 sizeof(struct ipr_dump_entry_header);
2144 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2145 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2146 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2147 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2148 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2149 ucode_vpd->minor_release[1];
2150 driver_dump->hdr.num_entries++;
2151}
2152
2153/**
2154 * ipr_dump_version_data - Fill in the driver version in the dump.
2155 * @ioa_cfg: ioa config struct
2156 * @driver_dump: driver dump struct
2157 *
2158 * Return value:
2159 * nothing
2160 **/
2161static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2162 struct ipr_driver_dump *driver_dump)
2163{
2164 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2165 driver_dump->version_entry.hdr.len =
2166 sizeof(struct ipr_dump_version_entry) -
2167 sizeof(struct ipr_dump_entry_header);
2168 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2169 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2170 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2171 driver_dump->hdr.num_entries++;
2172}
2173
2174/**
2175 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2176 * @ioa_cfg: ioa config struct
2177 * @driver_dump: driver dump struct
2178 *
2179 * Return value:
2180 * nothing
2181 **/
2182static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2183 struct ipr_driver_dump *driver_dump)
2184{
2185 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2186 driver_dump->trace_entry.hdr.len =
2187 sizeof(struct ipr_dump_trace_entry) -
2188 sizeof(struct ipr_dump_entry_header);
2189 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2190 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2191 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2192 driver_dump->hdr.num_entries++;
2193}
2194
2195/**
2196 * ipr_dump_location_data - Fill in the IOA location in the dump.
2197 * @ioa_cfg: ioa config struct
2198 * @driver_dump: driver dump struct
2199 *
2200 * Return value:
2201 * nothing
2202 **/
2203static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2204 struct ipr_driver_dump *driver_dump)
2205{
2206 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2207 driver_dump->location_entry.hdr.len =
2208 sizeof(struct ipr_dump_location_entry) -
2209 sizeof(struct ipr_dump_entry_header);
2210 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2211 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2212 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2213 driver_dump->hdr.num_entries++;
2214}
2215
2216/**
2217 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2218 * @ioa_cfg: ioa config struct
2219 * @dump: dump struct
2220 *
2221 * Return value:
2222 * nothing
2223 **/
2224static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2225{
2226 unsigned long start_addr, sdt_word;
2227 unsigned long lock_flags = 0;
2228 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2229 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2230 u32 num_entries, start_off, end_off;
2231 u32 bytes_to_copy, bytes_copied, rc;
2232 struct ipr_sdt *sdt;
2233 int i;
2234
2235 ENTER;
2236
2237 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2238
2239 if (ioa_cfg->sdt_state != GET_DUMP) {
2240 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2241 return;
2242 }
2243
2244 start_addr = readl(ioa_cfg->ioa_mailbox);
2245
2246 if (!ipr_sdt_is_fmt2(start_addr)) {
2247 dev_err(&ioa_cfg->pdev->dev,
2248 "Invalid dump table format: %lx\n", start_addr);
2249 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2250 return;
2251 }
2252
2253 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2254
2255 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2256
2257 /* Initialize the overall dump header */
2258 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2259 driver_dump->hdr.num_entries = 1;
2260 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2261 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2262 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2263 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2264
2265 ipr_dump_version_data(ioa_cfg, driver_dump);
2266 ipr_dump_location_data(ioa_cfg, driver_dump);
2267 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2268 ipr_dump_trace_data(ioa_cfg, driver_dump);
2269
2270 /* Update dump_header */
2271 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2272
2273 /* IOA Dump entry */
2274 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2275 ioa_dump->format = IPR_SDT_FMT2;
2276 ioa_dump->hdr.len = 0;
2277 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2278 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2279
2280 /* First entries in sdt are actually a list of dump addresses and
2281 lengths to gather the real dump data. sdt represents the pointer
2282 to the ioa generated dump table. Dump data will be extracted based
2283 on entries in this table */
2284 sdt = &ioa_dump->sdt;
2285
2286 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2287 sizeof(struct ipr_sdt) / sizeof(__be32));
2288
2289 /* Smart Dump table is ready to use and the first entry is valid */
2290 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2291 dev_err(&ioa_cfg->pdev->dev,
2292 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2293 rc, be32_to_cpu(sdt->hdr.state));
2294 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2295 ioa_cfg->sdt_state = DUMP_OBTAINED;
2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2297 return;
2298 }
2299
2300 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2301
2302 if (num_entries > IPR_NUM_SDT_ENTRIES)
2303 num_entries = IPR_NUM_SDT_ENTRIES;
2304
2305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2306
2307 for (i = 0; i < num_entries; i++) {
2308 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2309 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2310 break;
2311 }
2312
2313 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2314 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2315 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2316 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2317
2318 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2319 bytes_to_copy = end_off - start_off;
2320 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2321 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2322 continue;
2323 }
2324
2325 /* Copy data from adapter to driver buffers */
2326 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2327 bytes_to_copy);
2328
2329 ioa_dump->hdr.len += bytes_copied;
2330
2331 if (bytes_copied != bytes_to_copy) {
2332 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2333 break;
2334 }
2335 }
2336 }
2337 }
2338
2339 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2340
2341 /* Update dump_header */
2342 driver_dump->hdr.len += ioa_dump->hdr.len;
2343 wmb();
2344 ioa_cfg->sdt_state = DUMP_OBTAINED;
2345 LEAVE;
2346}
2347
2348#else
2349#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2350#endif
2351
2352/**
2353 * ipr_release_dump - Free adapter dump memory
2354 * @kref: kref struct
2355 *
2356 * Return value:
2357 * nothing
2358 **/
2359static void ipr_release_dump(struct kref *kref)
2360{
2361 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2362 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2363 unsigned long lock_flags = 0;
2364 int i;
2365
2366 ENTER;
2367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2368 ioa_cfg->dump = NULL;
2369 ioa_cfg->sdt_state = INACTIVE;
2370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2371
2372 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2373 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2374
2375 kfree(dump);
2376 LEAVE;
2377}
2378
2379/**
2380 * ipr_worker_thread - Worker thread
c4028958 2381 * @work: ioa config struct
1da177e4
LT		 2382 *
2383 * Called at task level from a work thread. This function takes care
2384 * of adding and removing device from the mid-layer as configuration
2385 * changes are detected by the adapter.
2386 *
2387 * Return value:
2388 * nothing
2389 **/
c4028958 2390static void ipr_worker_thread(struct work_struct *work)
1da177e4
LT		 2391{
2392 unsigned long lock_flags;
2393 struct ipr_resource_entry *res;
2394 struct scsi_device *sdev;
2395 struct ipr_dump *dump;
c4028958
DH		 2396 struct ipr_ioa_cfg *ioa_cfg =
2397 container_of(work, struct ipr_ioa_cfg, work_q);
1da177e4
LT		 2398 u8 bus, target, lun;
2399 int did_work;
2400
2401 ENTER;
2402 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2403
2404 if (ioa_cfg->sdt_state == GET_DUMP) {
2405 dump = ioa_cfg->dump;
2406 if (!dump) {
2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2408 return;
2409 }
2410 kref_get(&dump->kref);
2411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2412 ipr_get_ioa_dump(ioa_cfg, dump);
2413 kref_put(&dump->kref, ipr_release_dump);
2414
2415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2416 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2419 return;
2420 }
2421
2422restart:
2423 do {
2424 did_work = 0;
2425 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 return;
2428 }
2429
2430 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2431 if (res->del_from_ml && res->sdev) {
2432 did_work = 1;
2433 sdev = res->sdev;
2434 if (!scsi_device_get(sdev)) {
1da177e4
LT		 2435 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2437 scsi_remove_device(sdev);
2438 scsi_device_put(sdev);
2439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2440 }
2441 break;
2442 }
2443 }
2444 } while(did_work);
2445
2446 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2447 if (res->add_to_ml) {
2448 bus = res->cfgte.res_addr.bus;
2449 target = res->cfgte.res_addr.target;
2450 lun = res->cfgte.res_addr.lun;
1121b794 2451 res->add_to_ml = 0;
1da177e4
LT		 2452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2453 scsi_add_device(ioa_cfg->host, bus, target, lun);
2454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2455 goto restart;
2456 }
2457 }
2458
2459 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
312c004d 2460 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
1da177e4
LT		 2461 LEAVE;
2462}
2463
2464#ifdef CONFIG_SCSI_IPR_TRACE
2465/**
2466 * ipr_read_trace - Dump the adapter trace
2467 * @kobj: kobject struct
2468 * @buf: buffer
2469 * @off: offset
2470 * @count: buffer size
2471 *
2472 * Return value:
2473 * number of bytes printed to buffer
2474 **/
2475static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2476 loff_t off, size_t count)
2477{
2478 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2479 struct Scsi_Host *shost = class_to_shost(cdev);
2480 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2481 unsigned long lock_flags = 0;
2482 int size = IPR_TRACE_SIZE;
2483 char *src = (char *)ioa_cfg->trace;
2484
2485 if (off > size)
2486 return 0;
2487 if (off + count > size) {
2488 size -= off;
2489 count = size;
2490 }
2491
2492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2493 memcpy(buf, &src[off], count);
2494 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2495 return count;
2496}
2497
2498static struct bin_attribute ipr_trace_attr = {
2499 .attr = {
2500 .name = "trace",
2501 .mode = S_IRUGO,
2502 },
2503 .size = 0,
2504 .read = ipr_read_trace,
2505};
2506#endif
2507
62275040
BK		 2508static const struct {
2509 enum ipr_cache_state state;
2510 char *name;
2511} cache_state [] = {
2512 { CACHE_NONE, "none" },
2513 { CACHE_DISABLED, "disabled" },
2514 { CACHE_ENABLED, "enabled" }
2515};
2516
2517/**
2518 * ipr_show_write_caching - Show the write caching attribute
2519 * @class_dev: class device struct
2520 * @buf: buffer
2521 *
2522 * Return value:
2523 * number of bytes printed to buffer
2524 **/
2525static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2526{
2527 struct Scsi_Host *shost = class_to_shost(class_dev);
2528 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2529 unsigned long lock_flags = 0;
2530 int i, len = 0;
2531
2532 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2533 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2534 if (cache_state[i].state == ioa_cfg->cache_state) {
2535 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2536 break;
2537 }
2538 }
2539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2540 return len;
2541}
2542
2543
2544/**
2545 * ipr_store_write_caching - Enable/disable adapter write cache
2546 * @class_dev: class_device struct
2547 * @buf: buffer
2548 * @count: buffer size
2549 *
2550 * This function will enable/disable adapter write cache.
2551 *
2552 * Return value:
2553 * count on success / other on failure
2554 **/
2555static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2556 const char *buf, size_t count)
2557{
2558 struct Scsi_Host *shost = class_to_shost(class_dev);
2559 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2560 unsigned long lock_flags = 0;
2561 enum ipr_cache_state new_state = CACHE_INVALID;
2562 int i;
2563
2564 if (!capable(CAP_SYS_ADMIN))
2565 return -EACCES;
2566 if (ioa_cfg->cache_state == CACHE_NONE)
2567 return -EINVAL;
2568
2569 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2570 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2571 new_state = cache_state[i].state;
2572 break;
2573 }
2574 }
2575
2576 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2577 return -EINVAL;
2578
2579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2580 if (ioa_cfg->cache_state == new_state) {
2581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2582 return count;
2583 }
2584
2585 ioa_cfg->cache_state = new_state;
2586 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2587 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2588 if (!ioa_cfg->in_reset_reload)
2589 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2590 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2591 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2592
2593 return count;
2594}
2595
2596static struct class_device_attribute ipr_ioa_cache_attr = {
2597 .attr = {
2598 .name = "write_cache",
2599 .mode = S_IRUGO | S_IWUSR,
2600 },
2601 .show = ipr_show_write_caching,
2602 .store = ipr_store_write_caching
2603};
2604
1da177e4
LT		 2605/**
2606 * ipr_show_fw_version - Show the firmware version
2607 * @class_dev: class device struct
2608 * @buf: buffer
2609 *
2610 * Return value:
2611 * number of bytes printed to buffer
2612 **/
2613static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2614{
2615 struct Scsi_Host *shost = class_to_shost(class_dev);
2616 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2617 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2618 unsigned long lock_flags = 0;
2619 int len;
2620
2621 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2622 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2623 ucode_vpd->major_release, ucode_vpd->card_type,
2624 ucode_vpd->minor_release[0],
2625 ucode_vpd->minor_release[1]);
2626 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2627 return len;
2628}
2629
2630static struct class_device_attribute ipr_fw_version_attr = {
2631 .attr = {
2632 .name = "fw_version",
2633 .mode = S_IRUGO,
2634 },
2635 .show = ipr_show_fw_version,
2636};
2637
2638/**
2639 * ipr_show_log_level - Show the adapter's error logging level
2640 * @class_dev: class device struct
2641 * @buf: buffer
2642 *
2643 * Return value:
2644 * number of bytes printed to buffer
2645 **/
2646static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2647{
2648 struct Scsi_Host *shost = class_to_shost(class_dev);
2649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2650 unsigned long lock_flags = 0;
2651 int len;
2652
2653 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2654 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2655 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2656 return len;
2657}
2658
2659/**
2660 * ipr_store_log_level - Change the adapter's error logging level
2661 * @class_dev: class device struct
2662 * @buf: buffer
2663 *
2664 * Return value:
2665 * number of bytes printed to buffer
2666 **/
2667static ssize_t ipr_store_log_level(struct class_device *class_dev,
2668 const char *buf, size_t count)
2669{
2670 struct Scsi_Host *shost = class_to_shost(class_dev);
2671 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2672 unsigned long lock_flags = 0;
2673
2674 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2675 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2676 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2677 return strlen(buf);
2678}
2679
2680static struct class_device_attribute ipr_log_level_attr = {
2681 .attr = {
2682 .name = "log_level",
2683 .mode = S_IRUGO | S_IWUSR,
2684 },
2685 .show = ipr_show_log_level,
2686 .store = ipr_store_log_level
2687};
2688
2689/**
2690 * ipr_store_diagnostics - IOA Diagnostics interface
2691 * @class_dev: class_device struct
2692 * @buf: buffer
2693 * @count: buffer size
2694 *
2695 * This function will reset the adapter and wait a reasonable
2696 * amount of time for any errors that the adapter might log.
2697 *
2698 * Return value:
2699 * count on success / other on failure
2700 **/
2701static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2702 const char *buf, size_t count)
2703{
2704 struct Scsi_Host *shost = class_to_shost(class_dev);
2705 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2706 unsigned long lock_flags = 0;
2707 int rc = count;
2708
2709 if (!capable(CAP_SYS_ADMIN))
2710 return -EACCES;
2711
1da177e4 2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 2713 while(ioa_cfg->in_reset_reload) {
2714 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2715 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2716 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2717 }
2718
1da177e4
LT		 2719 ioa_cfg->errors_logged = 0;
2720 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2721
2722 if (ioa_cfg->in_reset_reload) {
2723 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2724 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2725
2726 /* Wait for a second for any errors to be logged */
2727 msleep(1000);
2728 } else {
2729 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2730 return -EIO;
2731 }
2732
2733 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2734 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2735 rc = -EIO;
2736 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2737
2738 return rc;
2739}
2740
2741static struct class_device_attribute ipr_diagnostics_attr = {
2742 .attr = {
2743 .name = "run_diagnostics",
2744 .mode = S_IWUSR,
2745 },
2746 .store = ipr_store_diagnostics
2747};
2748
f37eb54b
BK		 2749/**
2750 * ipr_show_adapter_state - Show the adapter's state
2751 * @class_dev: class device struct
2752 * @buf: buffer
2753 *
2754 * Return value:
2755 * number of bytes printed to buffer
2756 **/
2757static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2758{
2759 struct Scsi_Host *shost = class_to_shost(class_dev);
2760 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2761 unsigned long lock_flags = 0;
2762 int len;
2763
2764 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2765 if (ioa_cfg->ioa_is_dead)
2766 len = snprintf(buf, PAGE_SIZE, "offline\n");
2767 else
2768 len = snprintf(buf, PAGE_SIZE, "online\n");
2769 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2770 return len;
2771}
2772
2773/**
2774 * ipr_store_adapter_state - Change adapter state
2775 * @class_dev: class_device struct
2776 * @buf: buffer
2777 * @count: buffer size
2778 *
2779 * This function will change the adapter's state.
2780 *
2781 * Return value:
2782 * count on success / other on failure
2783 **/
2784static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2785 const char *buf, size_t count)
2786{
2787 struct Scsi_Host *shost = class_to_shost(class_dev);
2788 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2789 unsigned long lock_flags;
2790 int result = count;
2791
2792 if (!capable(CAP_SYS_ADMIN))
2793 return -EACCES;
2794
2795 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2796 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2797 ioa_cfg->ioa_is_dead = 0;
2798 ioa_cfg->reset_retries = 0;
2799 ioa_cfg->in_ioa_bringdown = 0;
2800 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2801 }
2802 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2803 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2804
2805 return result;
2806}
2807
2808static struct class_device_attribute ipr_ioa_state_attr = {
2809 .attr = {
2810 .name = "state",
2811 .mode = S_IRUGO | S_IWUSR,
2812 },
2813 .show = ipr_show_adapter_state,
2814 .store = ipr_store_adapter_state
2815};
2816
1da177e4
LT		 2817/**
2818 * ipr_store_reset_adapter - Reset the adapter
2819 * @class_dev: class_device struct
2820 * @buf: buffer
2821 * @count: buffer size
2822 *
2823 * This function will reset the adapter.
2824 *
2825 * Return value:
2826 * count on success / other on failure
2827 **/
2828static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2829 const char *buf, size_t count)
2830{
2831 struct Scsi_Host *shost = class_to_shost(class_dev);
2832 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2833 unsigned long lock_flags;
2834 int result = count;
2835
2836 if (!capable(CAP_SYS_ADMIN))
2837 return -EACCES;
2838
2839 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2840 if (!ioa_cfg->in_reset_reload)
2841 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2842 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2843 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2844
2845 return result;
2846}
2847
2848static struct class_device_attribute ipr_ioa_reset_attr = {
2849 .attr = {
2850 .name = "reset_host",
2851 .mode = S_IWUSR,
2852 },
2853 .store = ipr_store_reset_adapter
2854};
2855
2856/**
2857 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2858 * @buf_len: buffer length
2859 *
2860 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2861 * list to use for microcode download
2862 *
2863 * Return value:
2864 * pointer to sglist / NULL on failure
2865 **/
2866static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2867{
2868 int sg_size, order, bsize_elem, num_elem, i, j;
2869 struct ipr_sglist *sglist;
2870 struct scatterlist *scatterlist;
2871 struct page *page;
2872
2873 /* Get the minimum size per scatter/gather element */
2874 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2875
2876 /* Get the actual size per element */
2877 order = get_order(sg_size);
2878
2879 /* Determine the actual number of bytes per element */
2880 bsize_elem = PAGE_SIZE * (1 << order);
2881
2882 /* Determine the actual number of sg entries needed */
2883 if (buf_len % bsize_elem)
2884 num_elem = (buf_len / bsize_elem) + 1;
2885 else
2886 num_elem = buf_len / bsize_elem;
2887
2888 /* Allocate a scatter/gather list for the DMA */
0bc42e35 2889 sglist = kzalloc(sizeof(struct ipr_sglist) +
1da177e4
LT		 2890 (sizeof(struct scatterlist) * (num_elem - 1)),
2891 GFP_KERNEL);
2892
2893 if (sglist == NULL) {
2894 ipr_trace;
2895 return NULL;
2896 }
2897
1da177e4
LT		 2898 scatterlist = sglist->scatterlist;
2899
2900 sglist->order = order;
2901 sglist->num_sg = num_elem;
2902
2903 /* Allocate a bunch of sg elements */
2904 for (i = 0; i < num_elem; i++) {
2905 page = alloc_pages(GFP_KERNEL, order);
2906 if (!page) {
2907 ipr_trace;
2908
2909 /* Free up what we already allocated */
2910 for (j = i - 1; j >= 0; j--)
2911 __free_pages(scatterlist[j].page, order);
2912 kfree(sglist);
2913 return NULL;
2914 }
2915
2916 scatterlist[i].page = page;
2917 }
2918
2919 return sglist;
2920}
2921
2922/**
2923 * ipr_free_ucode_buffer - Frees a microcode download buffer
2924 * @p_dnld: scatter/gather list pointer
2925 *
2926 * Free a DMA'able ucode download buffer previously allocated with
2927 * ipr_alloc_ucode_buffer
2928 *
2929 * Return value:
2930 * nothing
2931 **/
2932static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2933{
2934 int i;
2935
2936 for (i = 0; i < sglist->num_sg; i++)
2937 __free_pages(sglist->scatterlist[i].page, sglist->order);
2938
2939 kfree(sglist);
2940}
2941
2942/**
2943 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2944 * @sglist: scatter/gather list pointer
2945 * @buffer: buffer pointer
2946 * @len: buffer length
2947 *
2948 * Copy a microcode image from a user buffer into a buffer allocated by
2949 * ipr_alloc_ucode_buffer
2950 *
2951 * Return value:
2952 * 0 on success / other on failure
2953 **/
2954static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2955 u8 *buffer, u32 len)
2956{
2957 int bsize_elem, i, result = 0;
2958 struct scatterlist *scatterlist;
2959 void *kaddr;
2960
2961 /* Determine the actual number of bytes per element */
2962 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2963
2964 scatterlist = sglist->scatterlist;
2965
2966 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2967 kaddr = kmap(scatterlist[i].page);
2968 memcpy(kaddr, buffer, bsize_elem);
2969 kunmap(scatterlist[i].page);
2970
2971 scatterlist[i].length = bsize_elem;
2972
2973 if (result != 0) {
2974 ipr_trace;
2975 return result;
2976 }
2977 }
2978
2979 if (len % bsize_elem) {
2980 kaddr = kmap(scatterlist[i].page);
2981 memcpy(kaddr, buffer, len % bsize_elem);
2982 kunmap(scatterlist[i].page);
2983
2984 scatterlist[i].length = len % bsize_elem;
2985 }
2986
2987 sglist->buffer_len = len;
2988 return result;
2989}
2990
2991/**
12baa420 2992 * ipr_build_ucode_ioadl - Build a microcode download IOADL
1da177e4
LT		 2993 * @ipr_cmd: ipr command struct
2994 * @sglist: scatter/gather list
1da177e4 2995 *
12baa420 2996 * Builds a microcode download IOA data list (IOADL).
1da177e4 2997 *
1da177e4 2998 **/
12baa420
BK		 2999static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3000 struct ipr_sglist *sglist)
1da177e4 3001{
1da177e4
LT		 3002 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3003 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3004 struct scatterlist *scatterlist = sglist->scatterlist;
3005 int i;
3006
12baa420 3007 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
1da177e4 3008 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
12baa420 3009 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
1da177e4
LT		 3010 ioarcb->write_ioadl_len =
3011 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3012
3013 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3014 ioadl[i].flags_and_data_len =
3015 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3016 ioadl[i].address =
3017 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3018 }
3019
12baa420
BK		 3020 ioadl[i-1].flags_and_data_len |=
3021 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3022}
3023
3024/**
3025 * ipr_update_ioa_ucode - Update IOA's microcode
3026 * @ioa_cfg: ioa config struct
3027 * @sglist: scatter/gather list
3028 *
3029 * Initiate an adapter reset to update the IOA's microcode
3030 *
3031 * Return value:
3032 * 0 on success / -EIO on failure
3033 **/
3034static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3035 struct ipr_sglist *sglist)
3036{
3037 unsigned long lock_flags;
3038
3039 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 3040 while(ioa_cfg->in_reset_reload) {
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 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3044 }
12baa420
BK		 3045
3046 if (ioa_cfg->ucode_sglist) {
3047 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3048 dev_err(&ioa_cfg->pdev->dev,
3049 "Microcode download already in progress\n");
3050 return -EIO;
1da177e4 3051 }
12baa420
BK		 3052
3053 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3054 sglist->num_sg, DMA_TO_DEVICE);
3055
3056 if (!sglist->num_dma_sg) {
3057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3058 dev_err(&ioa_cfg->pdev->dev,
3059 "Failed to map microcode download buffer!\n");
1da177e4
LT		 3060 return -EIO;
3061 }
3062
12baa420
BK		 3063 ioa_cfg->ucode_sglist = sglist;
3064 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3067
3068 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3069 ioa_cfg->ucode_sglist = NULL;
3070 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1da177e4
LT		 3071 return 0;
3072}
3073
3074/**
3075 * ipr_store_update_fw - Update the firmware on the adapter
3076 * @class_dev: class_device struct
3077 * @buf: buffer
3078 * @count: buffer size
3079 *
3080 * This function will update the firmware on the adapter.
3081 *
3082 * Return value:
3083 * count on success / other on failure
3084 **/
3085static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3086 const char *buf, size_t count)
3087{
3088 struct Scsi_Host *shost = class_to_shost(class_dev);
3089 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3090 struct ipr_ucode_image_header *image_hdr;
3091 const struct firmware *fw_entry;
3092 struct ipr_sglist *sglist;
1da177e4
LT		 3093 char fname[100];
3094 char *src;
3095 int len, result, dnld_size;
3096
3097 if (!capable(CAP_SYS_ADMIN))
3098 return -EACCES;
3099
3100 len = snprintf(fname, 99, "%s", buf);
3101 fname[len-1] = '\0';
3102
3103 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3104 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3105 return -EIO;
3106 }
3107
3108 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3109
3110 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3111 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3112 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3113 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3114 release_firmware(fw_entry);
3115 return -EINVAL;
3116 }
3117
3118 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3119 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3120 sglist = ipr_alloc_ucode_buffer(dnld_size);
3121
3122 if (!sglist) {
3123 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3124 release_firmware(fw_entry);
3125 return -ENOMEM;
3126 }
3127
3128 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3129
3130 if (result) {
3131 dev_err(&ioa_cfg->pdev->dev,
3132 "Microcode buffer copy to DMA buffer failed\n");
12baa420 3133 goto out;
1da177e4
LT		 3134 }
3135
12baa420 3136 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
1da177e4 3137
12baa420
BK		 3138 if (!result)
3139 result = count;
3140out:
1da177e4
LT		 3141 ipr_free_ucode_buffer(sglist);
3142 release_firmware(fw_entry);
12baa420 3143 return result;
1da177e4
LT		 3144}
3145
3146static struct class_device_attribute ipr_update_fw_attr = {
3147 .attr = {
3148 .name = "update_fw",
3149 .mode = S_IWUSR,
3150 },
3151 .store = ipr_store_update_fw
3152};
3153
3154static struct class_device_attribute *ipr_ioa_attrs[] = {
3155 &ipr_fw_version_attr,
3156 &ipr_log_level_attr,
3157 &ipr_diagnostics_attr,
f37eb54b 3158 &ipr_ioa_state_attr,
1da177e4
LT		 3159 &ipr_ioa_reset_attr,
3160 &ipr_update_fw_attr,
62275040 3161 &ipr_ioa_cache_attr,
1da177e4
LT		 3162 NULL,
3163};
3164
3165#ifdef CONFIG_SCSI_IPR_DUMP
3166/**
3167 * ipr_read_dump - Dump the adapter
3168 * @kobj: kobject struct
3169 * @buf: buffer
3170 * @off: offset
3171 * @count: buffer size
3172 *
3173 * Return value:
3174 * number of bytes printed to buffer
3175 **/
3176static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3177 loff_t off, size_t count)
3178{
3179 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3180 struct Scsi_Host *shost = class_to_shost(cdev);
3181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3182 struct ipr_dump *dump;
3183 unsigned long lock_flags = 0;
3184 char *src;
3185 int len;
3186 size_t rc = count;
3187
3188 if (!capable(CAP_SYS_ADMIN))
3189 return -EACCES;
3190
3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3192 dump = ioa_cfg->dump;
3193
3194 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3196 return 0;
3197 }
3198 kref_get(&dump->kref);
3199 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3200
3201 if (off > dump->driver_dump.hdr.len) {
3202 kref_put(&dump->kref, ipr_release_dump);
3203 return 0;
3204 }
3205
3206 if (off + count > dump->driver_dump.hdr.len) {
3207 count = dump->driver_dump.hdr.len - off;
3208 rc = count;
3209 }
3210
3211 if (count && off < sizeof(dump->driver_dump)) {
3212 if (off + count > sizeof(dump->driver_dump))
3213 len = sizeof(dump->driver_dump) - off;
3214 else
3215 len = count;
3216 src = (u8 *)&dump->driver_dump + off;
3217 memcpy(buf, src, len);
3218 buf += len;
3219 off += len;
3220 count -= len;
3221 }
3222
3223 off -= sizeof(dump->driver_dump);
3224
3225 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3226 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3227 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3228 else
3229 len = count;
3230 src = (u8 *)&dump->ioa_dump + off;
3231 memcpy(buf, src, len);
3232 buf += len;
3233 off += len;
3234 count -= len;
3235 }
3236
3237 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3238
3239 while (count) {
3240 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3241 len = PAGE_ALIGN(off) - off;
3242 else
3243 len = count;
3244 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3245 src += off & ~PAGE_MASK;
3246 memcpy(buf, src, len);
3247 buf += len;
3248 off += len;
3249 count -= len;
3250 }
3251
3252 kref_put(&dump->kref, ipr_release_dump);
3253 return rc;
3254}
3255
3256/**
3257 * ipr_alloc_dump - Prepare for adapter dump
3258 * @ioa_cfg: ioa config struct
3259 *
3260 * Return value:
3261 * 0 on success / other on failure
3262 **/
3263static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3264{
3265 struct ipr_dump *dump;
3266 unsigned long lock_flags = 0;
3267
0bc42e35 3268 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
1da177e4
LT		 3269
3270 if (!dump) {
3271 ipr_err("Dump memory allocation failed\n");
3272 return -ENOMEM;
3273 }
3274
1da177e4
LT		 3275 kref_init(&dump->kref);
3276 dump->ioa_cfg = ioa_cfg;
3277
3278 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3279
3280 if (INACTIVE != ioa_cfg->sdt_state) {
3281 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3282 kfree(dump);
3283 return 0;
3284 }
3285
3286 ioa_cfg->dump = dump;
3287 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3288 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3289 ioa_cfg->dump_taken = 1;
3290 schedule_work(&ioa_cfg->work_q);
3291 }
3292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3293
1da177e4
LT		 3294 return 0;
3295}
3296
3297/**
3298 * ipr_free_dump - Free adapter dump memory
3299 * @ioa_cfg: ioa config struct
3300 *
3301 * Return value:
3302 * 0 on success / other on failure
3303 **/
3304static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3305{
3306 struct ipr_dump *dump;
3307 unsigned long lock_flags = 0;
3308
3309 ENTER;
3310
3311 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3312 dump = ioa_cfg->dump;
3313 if (!dump) {
3314 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3315 return 0;
3316 }
3317
3318 ioa_cfg->dump = NULL;
3319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3320
3321 kref_put(&dump->kref, ipr_release_dump);
3322
3323 LEAVE;
3324 return 0;
3325}
3326
3327/**
3328 * ipr_write_dump - Setup dump state of adapter
3329 * @kobj: kobject struct
3330 * @buf: buffer
3331 * @off: offset
3332 * @count: buffer size
3333 *
3334 * Return value:
3335 * number of bytes printed to buffer
3336 **/
3337static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3338 loff_t off, size_t count)
3339{
3340 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3341 struct Scsi_Host *shost = class_to_shost(cdev);
3342 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3343 int rc;
3344
3345 if (!capable(CAP_SYS_ADMIN))
3346 return -EACCES;
3347
3348 if (buf[0] == '1')
3349 rc = ipr_alloc_dump(ioa_cfg);
3350 else if (buf[0] == '0')
3351 rc = ipr_free_dump(ioa_cfg);
3352 else
3353 return -EINVAL;
3354
3355 if (rc)
3356 return rc;
3357 else
3358 return count;
3359}
3360
3361static struct bin_attribute ipr_dump_attr = {
3362 .attr = {
3363 .name = "dump",
3364 .mode = S_IRUSR | S_IWUSR,
3365 },
3366 .size = 0,
3367 .read = ipr_read_dump,
3368 .write = ipr_write_dump
3369};
3370#else
3371static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3372#endif
3373
3374/**
3375 * ipr_change_queue_depth - Change the device's queue depth
3376 * @sdev: scsi device struct
3377 * @qdepth: depth to set
3378 *
3379 * Return value:
3380 * actual depth set
3381 **/
3382static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3383{
35a39691
BK		 3384 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3385 struct ipr_resource_entry *res;
3386 unsigned long lock_flags = 0;
3387
3388 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3389 res = (struct ipr_resource_entry *)sdev->hostdata;
3390
3391 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3392 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3393 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3394
1da177e4
LT		 3395 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3396 return sdev->queue_depth;
3397}
3398
3399/**
3400 * ipr_change_queue_type - Change the device's queue type
3401 * @dsev: scsi device struct
3402 * @tag_type: type of tags to use
3403 *
3404 * Return value:
3405 * actual queue type set
3406 **/
3407static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3408{
3409 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3410 struct ipr_resource_entry *res;
3411 unsigned long lock_flags = 0;
3412
3413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3414 res = (struct ipr_resource_entry *)sdev->hostdata;
3415
3416 if (res) {
3417 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3418 /*
3419 * We don't bother quiescing the device here since the
3420 * adapter firmware does it for us.
3421 */
3422 scsi_set_tag_type(sdev, tag_type);
3423
3424 if (tag_type)
3425 scsi_activate_tcq(sdev, sdev->queue_depth);
3426 else
3427 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3428 } else
3429 tag_type = 0;
3430 } else
3431 tag_type = 0;
3432
3433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3434 return tag_type;
3435}
3436
3437/**
3438 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3439 * @dev: device struct
3440 * @buf: buffer
3441 *
3442 * Return value:
3443 * number of bytes printed to buffer
3444 **/
10523b3b 3445static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 3446{
3447 struct scsi_device *sdev = to_scsi_device(dev);
3448 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3449 struct ipr_resource_entry *res;
3450 unsigned long lock_flags = 0;
3451 ssize_t len = -ENXIO;
3452
3453 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3454 res = (struct ipr_resource_entry *)sdev->hostdata;
3455 if (res)
3456 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3457 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3458 return len;
3459}
3460
3461static struct device_attribute ipr_adapter_handle_attr = {
3462 .attr = {
3463 .name = "adapter_handle",
3464 .mode = S_IRUSR,
3465 },
3466 .show = ipr_show_adapter_handle
3467};
3468
3469static struct device_attribute *ipr_dev_attrs[] = {
3470 &ipr_adapter_handle_attr,
3471 NULL,
3472};
3473
3474/**
3475 * ipr_biosparam - Return the HSC mapping
3476 * @sdev: scsi device struct
3477 * @block_device: block device pointer
3478 * @capacity: capacity of the device
3479 * @parm: Array containing returned HSC values.
3480 *
3481 * This function generates the HSC parms that fdisk uses.
3482 * We want to make sure we return something that places partitions
3483 * on 4k boundaries for best performance with the IOA.
3484 *
3485 * Return value:
3486 * 0 on success
3487 **/
3488static int ipr_biosparam(struct scsi_device *sdev,
3489 struct block_device *block_device,
3490 sector_t capacity, int *parm)
3491{
3492 int heads, sectors;
3493 sector_t cylinders;
3494
3495 heads = 128;
3496 sectors = 32;
3497
3498 cylinders = capacity;
3499 sector_div(cylinders, (128 * 32));
3500
3501 /* return result */
3502 parm[0] = heads;
3503 parm[1] = sectors;
3504 parm[2] = cylinders;
3505
3506 return 0;
3507}
3508
35a39691
BK		 3509/**
3510 * ipr_find_starget - Find target based on bus/target.
3511 * @starget: scsi target struct
3512 *
3513 * Return value:
3514 * resource entry pointer if found / NULL if not found
3515 **/
3516static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3517{
3518 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3519 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3520 struct ipr_resource_entry *res;
3521
3522 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3523 if ((res->cfgte.res_addr.bus == starget->channel) &&
3524 (res->cfgte.res_addr.target == starget->id) &&
3525 (res->cfgte.res_addr.lun == 0)) {
3526 return res;
3527 }
3528 }
3529
3530 return NULL;
3531}
3532
3533static struct ata_port_info sata_port_info;
3534
3535/**
3536 * ipr_target_alloc - Prepare for commands to a SCSI target
3537 * @starget: scsi target struct
3538 *
3539 * If the device is a SATA device, this function allocates an
3540 * ATA port with libata, else it does nothing.
3541 *
3542 * Return value:
3543 * 0 on success / non-0 on failure
3544 **/
3545static int ipr_target_alloc(struct scsi_target *starget)
3546{
3547 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3548 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3549 struct ipr_sata_port *sata_port;
3550 struct ata_port *ap;
3551 struct ipr_resource_entry *res;
3552 unsigned long lock_flags;
3553
3554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3555 res = ipr_find_starget(starget);
3556 starget->hostdata = NULL;
3557
3558 if (res && ipr_is_gata(res)) {
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3561 if (!sata_port)
3562 return -ENOMEM;
3563
3564 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3565 if (ap) {
3566 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3567 sata_port->ioa_cfg = ioa_cfg;
3568 sata_port->ap = ap;
3569 sata_port->res = res;
3570
3571 res->sata_port = sata_port;
3572 ap->private_data = sata_port;
3573 starget->hostdata = sata_port;
3574 } else {
3575 kfree(sata_port);
3576 return -ENOMEM;
3577 }
3578 }
3579 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3580
3581 return 0;
3582}
3583
3584/**
3585 * ipr_target_destroy - Destroy a SCSI target
3586 * @starget: scsi target struct
3587 *
3588 * If the device was a SATA device, this function frees the libata
3589 * ATA port, else it does nothing.
3590 *
3591 **/
3592static void ipr_target_destroy(struct scsi_target *starget)
3593{
3594 struct ipr_sata_port *sata_port = starget->hostdata;
3595
3596 if (sata_port) {
3597 starget->hostdata = NULL;
3598 ata_sas_port_destroy(sata_port->ap);
3599 kfree(sata_port);
3600 }
3601}
3602
3603/**
3604 * ipr_find_sdev - Find device based on bus/target/lun.
3605 * @sdev: scsi device struct
3606 *
3607 * Return value:
3608 * resource entry pointer if found / NULL if not found
3609 **/
3610static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3611{
3612 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3613 struct ipr_resource_entry *res;
3614
3615 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3616 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3617 (res->cfgte.res_addr.target == sdev->id) &&
3618 (res->cfgte.res_addr.lun == sdev->lun))
3619 return res;
3620 }
3621
3622 return NULL;
3623}
3624
1da177e4
LT		 3625/**
3626 * ipr_slave_destroy - Unconfigure a SCSI device
3627 * @sdev: scsi device struct
3628 *
3629 * Return value:
3630 * nothing
3631 **/
3632static void ipr_slave_destroy(struct scsi_device *sdev)
3633{
3634 struct ipr_resource_entry *res;
3635 struct ipr_ioa_cfg *ioa_cfg;
3636 unsigned long lock_flags = 0;
3637
3638 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3639
3640 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3641 res = (struct ipr_resource_entry *) sdev->hostdata;
3642 if (res) {
35a39691
BK		 3643 if (res->sata_port)
3644 ata_port_disable(res->sata_port->ap);
1da177e4
LT		 3645 sdev->hostdata = NULL;
3646 res->sdev = NULL;
35a39691 3647 res->sata_port = NULL;
1da177e4
LT		 3648 }
3649 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3650}
3651
3652/**
3653 * ipr_slave_configure - Configure a SCSI device
3654 * @sdev: scsi device struct
3655 *
3656 * This function configures the specified scsi device.
3657 *
3658 * Return value:
3659 * 0 on success
3660 **/
3661static int ipr_slave_configure(struct scsi_device *sdev)
3662{
3663 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3664 struct ipr_resource_entry *res;
3665 unsigned long lock_flags = 0;
3666
3667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3668 res = sdev->hostdata;
3669 if (res) {
3670 if (ipr_is_af_dasd_device(res))
3671 sdev->type = TYPE_RAID;
0726ce26 3672 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 3673 sdev->scsi_level = 4;
0726ce26
BK		 3674 sdev->no_uld_attach = 1;
3675 }
1da177e4
LT		 3676 if (ipr_is_vset_device(res)) {
3677 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3678 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3679 }
e4fbf44e 3680 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
1da177e4 3681 sdev->allow_restart = 1;
35a39691
BK		 3682 if (ipr_is_gata(res) && res->sata_port) {
3683 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3684 ata_sas_slave_configure(sdev, res->sata_port->ap);
3685 } else {
3686 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3687 }
1da177e4
LT		 3688 }
3689 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3690 return 0;
3691}
3692
35a39691
BK		 3693/**
3694 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3695 * @sdev: scsi device struct
3696 *
3697 * This function initializes an ATA port so that future commands
3698 * sent through queuecommand will work.
3699 *
3700 * Return value:
3701 * 0 on success
3702 **/
3703static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3704{
3705 struct ipr_sata_port *sata_port = NULL;
3706 int rc = -ENXIO;
3707
3708 ENTER;
3709 if (sdev->sdev_target)
3710 sata_port = sdev->sdev_target->hostdata;
3711 if (sata_port)
3712 rc = ata_sas_port_init(sata_port->ap);
3713 if (rc)
3714 ipr_slave_destroy(sdev);
3715
3716 LEAVE;
3717 return rc;
3718}
3719
1da177e4
LT		 3720/**
3721 * ipr_slave_alloc - Prepare for commands to a device.
3722 * @sdev: scsi device struct
3723 *
3724 * This function saves a pointer to the resource entry
3725 * in the scsi device struct if the device exists. We
3726 * can then use this pointer in ipr_queuecommand when
3727 * handling new commands.
3728 *
3729 * Return value:
692aebfc 3730 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 3731 **/
3732static int ipr_slave_alloc(struct scsi_device *sdev)
3733{
3734 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3735 struct ipr_resource_entry *res;
3736 unsigned long lock_flags;
692aebfc 3737 int rc = -ENXIO;
1da177e4
LT		 3738
3739 sdev->hostdata = NULL;
3740
3741 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3742
35a39691
BK		 3743 res = ipr_find_sdev(sdev);
3744 if (res) {
3745 res->sdev = sdev;
3746 res->add_to_ml = 0;
3747 res->in_erp = 0;
3748 sdev->hostdata = res;
3749 if (!ipr_is_naca_model(res))
3750 res->needs_sync_complete = 1;
3751 rc = 0;
3752 if (ipr_is_gata(res)) {
3753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3754 return ipr_ata_slave_alloc(sdev);
1da177e4
LT		 3755 }
3756 }
3757
3758 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3759
692aebfc 3760 return rc;
1da177e4
LT		 3761}
3762
3763/**
3764 * ipr_eh_host_reset - Reset the host adapter
3765 * @scsi_cmd: scsi command struct
3766 *
3767 * Return value:
3768 * SUCCESS / FAILED
3769 **/
df0ae249 3770static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3771{
3772 struct ipr_ioa_cfg *ioa_cfg;
3773 int rc;
3774
3775 ENTER;
3776 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3777
3778 dev_err(&ioa_cfg->pdev->dev,
3779 "Adapter being reset as a result of error recovery.\n");
3780
3781 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3782 ioa_cfg->sdt_state = GET_DUMP;
3783
3784 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3785
3786 LEAVE;
3787 return rc;
3788}
3789
df0ae249
JG		 3790static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3791{
3792 int rc;
3793
3794 spin_lock_irq(cmd->device->host->host_lock);
3795 rc = __ipr_eh_host_reset(cmd);
3796 spin_unlock_irq(cmd->device->host->host_lock);
3797
3798 return rc;
3799}
3800
c6513096
BK		 3801/**
3802 * ipr_device_reset - Reset the device
3803 * @ioa_cfg: ioa config struct
3804 * @res: resource entry struct
3805 *
3806 * This function issues a device reset to the affected device.
3807 * If the device is a SCSI device, a LUN reset will be sent
3808 * to the device first. If that does not work, a target reset
35a39691
BK		 3809 * will be sent. If the device is a SATA device, a PHY reset will
3810 * be sent.
c6513096
BK		 3811 *
3812 * Return value:
3813 * 0 on success / non-zero on failure
3814 **/
3815static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3816 struct ipr_resource_entry *res)
3817{
3818 struct ipr_cmnd *ipr_cmd;
3819 struct ipr_ioarcb *ioarcb;
3820 struct ipr_cmd_pkt *cmd_pkt;
35a39691 3821 struct ipr_ioarcb_ata_regs *regs;
c6513096
BK		 3822 u32 ioasc;
3823
3824 ENTER;
3825 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3826 ioarcb = &ipr_cmd->ioarcb;
3827 cmd_pkt = &ioarcb->cmd_pkt;
35a39691 3828 regs = &ioarcb->add_data.u.regs;
c6513096
BK		 3829
3830 ioarcb->res_handle = res->cfgte.res_handle;
3831 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3832 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
35a39691
BK		 3833 if (ipr_is_gata(res)) {
3834 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3835 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3836 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3837 }
c6513096
BK		 3838
3839 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3840 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3841 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
35a39691
BK		 3842 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3843 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3844 sizeof(struct ipr_ioasa_gata));
c6513096
BK		 3845
3846 LEAVE;
3847 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3848}
3849
35a39691
BK		 3850/**
3851 * ipr_sata_reset - Reset the SATA port
3852 * @ap: SATA port to reset
3853 * @classes: class of the attached device
3854 *
3855 * This function issues a SATA phy reset to the affected ATA port.
3856 *
3857 * Return value:
3858 * 0 on success / non-zero on failure
3859 **/
120bda35
AM		 3860static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes,
3861 unsigned long deadline)
35a39691
BK		 3862{
3863 struct ipr_sata_port *sata_port = ap->private_data;
3864 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3865 struct ipr_resource_entry *res;
3866 unsigned long lock_flags = 0;
3867 int rc = -ENXIO;
3868
3869 ENTER;
3870 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
73d98ff0
BK		 3871 while(ioa_cfg->in_reset_reload) {
3872 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3873 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3874 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3875 }
3876
35a39691
BK		 3877 res = sata_port->res;
3878 if (res) {
3879 rc = ipr_device_reset(ioa_cfg, res);
3880 switch(res->cfgte.proto) {
3881 case IPR_PROTO_SATA:
3882 case IPR_PROTO_SAS_STP:
3883 *classes = ATA_DEV_ATA;
3884 break;
3885 case IPR_PROTO_SATA_ATAPI:
3886 case IPR_PROTO_SAS_STP_ATAPI:
3887 *classes = ATA_DEV_ATAPI;
3888 break;
3889 default:
3890 *classes = ATA_DEV_UNKNOWN;
3891 break;
3892 };
3893 }
3894
3895 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3896 LEAVE;
3897 return rc;
3898}
3899
1da177e4
LT		 3900/**
3901 * ipr_eh_dev_reset - Reset the device
3902 * @scsi_cmd: scsi command struct
3903 *
3904 * This function issues a device reset to the affected device.
3905 * A LUN reset will be sent to the device first. If that does
3906 * not work, a target reset will be sent.
3907 *
3908 * Return value:
3909 * SUCCESS / FAILED
3910 **/
94d0e7b8 3911static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 3912{
3913 struct ipr_cmnd *ipr_cmd;
3914 struct ipr_ioa_cfg *ioa_cfg;
3915 struct ipr_resource_entry *res;
35a39691
BK		 3916 struct ata_port *ap;
3917 int rc = 0;
1da177e4
LT		 3918
3919 ENTER;
3920 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3921 res = scsi_cmd->device->hostdata;
3922
eeb88307 3923 if (!res)
1da177e4
LT		 3924 return FAILED;
3925
3926 /*
3927 * If we are currently going through reset/reload, return failed. This will force the
3928 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3929 * reset to complete
3930 */
3931 if (ioa_cfg->in_reset_reload)
3932 return FAILED;
3933 if (ioa_cfg->ioa_is_dead)
3934 return FAILED;
3935
3936 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3937 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3938 if (ipr_cmd->scsi_cmd)
3939 ipr_cmd->done = ipr_scsi_eh_done;
24d6f2b5
BK		 3940 if (ipr_cmd->qc)
3941 ipr_cmd->done = ipr_sata_eh_done;
7402ecef
BK		 3942 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3943 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3944 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3945 }
1da177e4
LT		 3946 }
3947 }
3948
3949 res->resetting_device = 1;
fb3ed3cb 3950 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
35a39691
BK		 3951
3952 if (ipr_is_gata(res) && res->sata_port) {
3953 ap = res->sata_port->ap;
3954 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3955 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3956 spin_lock_irq(scsi_cmd->device->host->host_lock);
5af23d26
BK		 3957
3958 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3959 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3960 rc = -EIO;
3961 break;
3962 }
3963 }
35a39691
BK		 3964 } else
3965 rc = ipr_device_reset(ioa_cfg, res);
1da177e4
LT		 3966 res->resetting_device = 0;
3967
1da177e4 3968 LEAVE;
c6513096 3969 return (rc ? FAILED : SUCCESS);
1da177e4
LT		 3970}
3971
94d0e7b8
JG		 3972static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3973{
3974 int rc;
3975
3976 spin_lock_irq(cmd->device->host->host_lock);
3977 rc = __ipr_eh_dev_reset(cmd);
3978 spin_unlock_irq(cmd->device->host->host_lock);
3979
3980 return rc;
3981}
3982
1da177e4
LT		 3983/**
3984 * ipr_bus_reset_done - Op done function for bus reset.
3985 * @ipr_cmd: ipr command struct
3986 *
3987 * This function is the op done function for a bus reset
3988 *
3989 * Return value:
3990 * none
3991 **/
3992static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3993{
3994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3995 struct ipr_resource_entry *res;
3996
3997 ENTER;
3998 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3999 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
4000 sizeof(res->cfgte.res_handle))) {
4001 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
4002 break;
4003 }
4004 }
4005
4006 /*
4007 * If abort has not completed, indicate the reset has, else call the
4008 * abort's done function to wake the sleeping eh thread
4009 */
4010 if (ipr_cmd->sibling->sibling)
4011 ipr_cmd->sibling->sibling = NULL;
4012 else
4013 ipr_cmd->sibling->done(ipr_cmd->sibling);
4014
4015 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4016 LEAVE;
4017}
4018
4019/**
4020 * ipr_abort_timeout - An abort task has timed out
4021 * @ipr_cmd: ipr command struct
4022 *
4023 * This function handles when an abort task times out. If this
4024 * happens we issue a bus reset since we have resources tied
4025 * up that must be freed before returning to the midlayer.
4026 *
4027 * Return value:
4028 * none
4029 **/
4030static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4031{
4032 struct ipr_cmnd *reset_cmd;
4033 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4034 struct ipr_cmd_pkt *cmd_pkt;
4035 unsigned long lock_flags = 0;
4036
4037 ENTER;
4038 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4039 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4041 return;
4042 }
4043
fb3ed3cb 4044 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
1da177e4
LT		 4045 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4046 ipr_cmd->sibling = reset_cmd;
4047 reset_cmd->sibling = ipr_cmd;
4048 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4049 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4050 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4051 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4052 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4053
4054 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4056 LEAVE;
4057}
4058
4059/**
4060 * ipr_cancel_op - Cancel specified op
4061 * @scsi_cmd: scsi command struct
4062 *
4063 * This function cancels specified op.
4064 *
4065 * Return value:
4066 * SUCCESS / FAILED
4067 **/
4068static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4069{
4070 struct ipr_cmnd *ipr_cmd;
4071 struct ipr_ioa_cfg *ioa_cfg;
4072 struct ipr_resource_entry *res;
4073 struct ipr_cmd_pkt *cmd_pkt;
4074 u32 ioasc;
4075 int op_found = 0;
4076
4077 ENTER;
4078 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4079 res = scsi_cmd->device->hostdata;
4080
8fa728a2
JG		 4081 /* If we are currently going through reset/reload, return failed.
4082 * This will force the mid-layer to call ipr_eh_host_reset,
4083 * which will then go to sleep and wait for the reset to complete
4084 */
4085 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4086 return FAILED;
04d9768f 4087 if (!res || !ipr_is_gscsi(res))
1da177e4
LT		 4088 return FAILED;
4089
4090 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4091 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4092 ipr_cmd->done = ipr_scsi_eh_done;
4093 op_found = 1;
4094 break;
4095 }
4096 }
4097
4098 if (!op_found)
4099 return SUCCESS;
4100
4101 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4102 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4103 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4104 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4105 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4106 ipr_cmd->u.sdev = scsi_cmd->device;
4107
fb3ed3cb
BK		 4108 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4109 scsi_cmd->cmnd[0]);
1da177e4
LT		 4110 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4111 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4112
4113 /*
4114 * If the abort task timed out and we sent a bus reset, we will get
4115 * one the following responses to the abort
4116 */
4117 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4118 ioasc = 0;
4119 ipr_trace;
4120 }
4121
4122 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
ee0a90fa
BK		 4123 if (!ipr_is_naca_model(res))
4124 res->needs_sync_complete = 1;
1da177e4
LT		 4125
4126 LEAVE;
4127 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4128}
4129
4130/**
4131 * ipr_eh_abort - Abort a single op
4132 * @scsi_cmd: scsi command struct
4133 *
4134 * Return value:
4135 * SUCCESS / FAILED
4136 **/
4137static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4138{
8fa728a2
JG		 4139 unsigned long flags;
4140 int rc;
1da177e4
LT		 4141
4142 ENTER;
1da177e4 4143
8fa728a2
JG		 4144 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4145 rc = ipr_cancel_op(scsi_cmd);
4146 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 4147
4148 LEAVE;
8fa728a2 4149 return rc;
1da177e4
LT		 4150}
4151
4152/**
4153 * ipr_handle_other_interrupt - Handle "other" interrupts
4154 * @ioa_cfg: ioa config struct
4155 * @int_reg: interrupt register
4156 *
4157 * Return value:
4158 * IRQ_NONE / IRQ_HANDLED
4159 **/
4160static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4161 volatile u32 int_reg)
4162{
4163 irqreturn_t rc = IRQ_HANDLED;
4164
4165 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4166 /* Mask the interrupt */
4167 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4168
4169 /* Clear the interrupt */
4170 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4171 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4172
4173 list_del(&ioa_cfg->reset_cmd->queue);
4174 del_timer(&ioa_cfg->reset_cmd->timer);
4175 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4176 } else {
4177 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4178 ioa_cfg->ioa_unit_checked = 1;
4179 else
4180 dev_err(&ioa_cfg->pdev->dev,
4181 "Permanent IOA failure. 0x%08X\n", int_reg);
4182
4183 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4184 ioa_cfg->sdt_state = GET_DUMP;
4185
4186 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4187 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4188 }
4189
4190 return rc;
4191}
4192
4193/**
4194 * ipr_isr - Interrupt service routine
4195 * @irq: irq number
4196 * @devp: pointer to ioa config struct
1da177e4
LT		 4197 *
4198 * Return value:
4199 * IRQ_NONE / IRQ_HANDLED
4200 **/
7d12e780 4201static irqreturn_t ipr_isr(int irq, void *devp)
1da177e4
LT		 4202{
4203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4204 unsigned long lock_flags = 0;
4205 volatile u32 int_reg, int_mask_reg;
4206 u32 ioasc;
4207 u16 cmd_index;
4208 struct ipr_cmnd *ipr_cmd;
4209 irqreturn_t rc = IRQ_NONE;
4210
4211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4212
4213 /* If interrupts are disabled, ignore the interrupt */
4214 if (!ioa_cfg->allow_interrupts) {
4215 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4216 return IRQ_NONE;
4217 }
4218
4219 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4220 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4221
4222 /* If an interrupt on the adapter did not occur, ignore it */
4223 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4225 return IRQ_NONE;
4226 }
4227
4228 while (1) {
4229 ipr_cmd = NULL;
4230
4231 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4232 ioa_cfg->toggle_bit) {
4233
4234 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4235 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4236
4237 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4238 ioa_cfg->errors_logged++;
4239 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4240
4241 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4242 ioa_cfg->sdt_state = GET_DUMP;
4243
4244 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4246 return IRQ_HANDLED;
4247 }
4248
4249 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4250
4251 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4252
4253 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4254
4255 list_del(&ipr_cmd->queue);
4256 del_timer(&ipr_cmd->timer);
4257 ipr_cmd->done(ipr_cmd);
4258
4259 rc = IRQ_HANDLED;
4260
4261 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4262 ioa_cfg->hrrq_curr++;
4263 } else {
4264 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4265 ioa_cfg->toggle_bit ^= 1u;
4266 }
4267 }
4268
4269 if (ipr_cmd != NULL) {
4270 /* Clear the PCI interrupt */
4271 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4272 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4273 } else
4274 break;
4275 }
4276
4277 if (unlikely(rc == IRQ_NONE))
4278 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4279
4280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4281 return rc;
4282}
4283
4284/**
4285 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4286 * @ioa_cfg: ioa config struct
4287 * @ipr_cmd: ipr command struct
4288 *
4289 * Return value:
4290 * 0 on success / -1 on failure
4291 **/
4292static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4293 struct ipr_cmnd *ipr_cmd)
4294{
4295 int i;
4296 struct scatterlist *sglist;
4297 u32 length;
4298 u32 ioadl_flags = 0;
4299 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4300 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4301 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4302
4303 length = scsi_cmd->request_bufflen;
4304
4305 if (length == 0)
4306 return 0;
4307
4308 if (scsi_cmd->use_sg) {
4309 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4310 scsi_cmd->request_buffer,
4311 scsi_cmd->use_sg,
4312 scsi_cmd->sc_data_direction);
4313
4314 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4315 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4316 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4317 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4318 ioarcb->write_ioadl_len =
4319 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4320 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4321 ioadl_flags = IPR_IOADL_FLAGS_READ;
4322 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4323 ioarcb->read_ioadl_len =
4324 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4325 }
4326
4327 sglist = scsi_cmd->request_buffer;
4328
51b1c7e1
BK		 4329 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4330 ioadl = ioarcb->add_data.u.ioadl;
4331 ioarcb->write_ioadl_addr =
4332 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4333 offsetof(struct ipr_ioarcb, add_data));
4334 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4335 }
4336
1da177e4
LT		 4337 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4338 ioadl[i].flags_and_data_len =
4339 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4340 ioadl[i].address =
4341 cpu_to_be32(sg_dma_address(&sglist[i]));
4342 }
4343
4344 if (likely(ipr_cmd->dma_use_sg)) {
4345 ioadl[i-1].flags_and_data_len |=
4346 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4347 return 0;
4348 } else
4349 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4350 } else {
4351 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4352 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4353 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4354 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4355 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4356 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4357 ioadl_flags = IPR_IOADL_FLAGS_READ;
4358 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4359 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4360 }
4361
4362 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4363 scsi_cmd->request_buffer, length,
4364 scsi_cmd->sc_data_direction);
4365
4366 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
51b1c7e1
BK		 4367 ioadl = ioarcb->add_data.u.ioadl;
4368 ioarcb->write_ioadl_addr =
4369 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4370 offsetof(struct ipr_ioarcb, add_data));
4371 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4372 ipr_cmd->dma_use_sg = 1;
4373 ioadl[0].flags_and_data_len =
4374 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4375 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4376 return 0;
4377 } else
4378 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4379 }
4380
4381 return -1;
4382}
4383
4384/**
4385 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4386 * @scsi_cmd: scsi command struct
4387 *
4388 * Return value:
4389 * task attributes
4390 **/
4391static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4392{
4393 u8 tag[2];
4394 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4395
4396 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4397 switch (tag[0]) {
4398 case MSG_SIMPLE_TAG:
4399 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4400 break;
4401 case MSG_HEAD_TAG:
4402 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4403 break;
4404 case MSG_ORDERED_TAG:
4405 rc = IPR_FLAGS_LO_ORDERED_TASK;
4406 break;
4407 };
4408 }
4409
4410 return rc;
4411}
4412
4413/**
4414 * ipr_erp_done - Process completion of ERP for a device
4415 * @ipr_cmd: ipr command struct
4416 *
4417 * This function copies the sense buffer into the scsi_cmd
4418 * struct and pushes the scsi_done function.
4419 *
4420 * Return value:
4421 * nothing
4422 **/
4423static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4424{
4425 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4426 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4427 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4428 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4429
4430 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4431 scsi_cmd->result |= (DID_ERROR << 16);
fb3ed3cb
BK		 4432 scmd_printk(KERN_ERR, scsi_cmd,
4433 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
1da177e4
LT		 4434 } else {
4435 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4436 SCSI_SENSE_BUFFERSIZE);
4437 }
4438
4439 if (res) {
ee0a90fa
BK		 4440 if (!ipr_is_naca_model(res))
4441 res->needs_sync_complete = 1;
1da177e4
LT		 4442 res->in_erp = 0;
4443 }
4444 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4445 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4446 scsi_cmd->scsi_done(scsi_cmd);
4447}
4448
4449/**
4450 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4451 * @ipr_cmd: ipr command struct
4452 *
4453 * Return value:
4454 * none
4455 **/
4456static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4457{
51b1c7e1
BK		 4458 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4459 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4460 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
1da177e4
LT		 4461
4462 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4463 ioarcb->write_data_transfer_length = 0;
4464 ioarcb->read_data_transfer_length = 0;
4465 ioarcb->write_ioadl_len = 0;
4466 ioarcb->read_ioadl_len = 0;
4467 ioasa->ioasc = 0;
4468 ioasa->residual_data_len = 0;
51b1c7e1
BK		 4469 ioarcb->write_ioadl_addr =
4470 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4471 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
1da177e4
LT		 4472}
4473
4474/**
4475 * ipr_erp_request_sense - Send request sense to a device
4476 * @ipr_cmd: ipr command struct
4477 *
4478 * This function sends a request sense to a device as a result
4479 * of a check condition.
4480 *
4481 * Return value:
4482 * nothing
4483 **/
4484static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4485{
4486 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4487 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4488
4489 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4490 ipr_erp_done(ipr_cmd);
4491 return;
4492 }
4493
4494 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4495
4496 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4497 cmd_pkt->cdb[0] = REQUEST_SENSE;
4498 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4499 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4500 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4501 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4502
4503 ipr_cmd->ioadl[0].flags_and_data_len =
4504 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4505 ipr_cmd->ioadl[0].address =
4506 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4507
4508 ipr_cmd->ioarcb.read_ioadl_len =
4509 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4510 ipr_cmd->ioarcb.read_data_transfer_length =
4511 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4512
4513 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4514 IPR_REQUEST_SENSE_TIMEOUT * 2);
4515}
4516
4517/**
4518 * ipr_erp_cancel_all - Send cancel all to a device
4519 * @ipr_cmd: ipr command struct
4520 *
4521 * This function sends a cancel all to a device to clear the
4522 * queue. If we are running TCQ on the device, QERR is set to 1,
4523 * which means all outstanding ops have been dropped on the floor.
4524 * Cancel all will return them to us.
4525 *
4526 * Return value:
4527 * nothing
4528 **/
4529static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4530{
4531 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4532 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4533 struct ipr_cmd_pkt *cmd_pkt;
4534
4535 res->in_erp = 1;
4536
4537 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4538
4539 if (!scsi_get_tag_type(scsi_cmd->device)) {
4540 ipr_erp_request_sense(ipr_cmd);
4541 return;
4542 }
4543
4544 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4545 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4546 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4547
4548 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4549 IPR_CANCEL_ALL_TIMEOUT);
4550}
4551
4552/**
4553 * ipr_dump_ioasa - Dump contents of IOASA
4554 * @ioa_cfg: ioa config struct
4555 * @ipr_cmd: ipr command struct
fe964d0a 4556 * @res: resource entry struct
1da177e4
LT		 4557 *
4558 * This function is invoked by the interrupt handler when ops
4559 * fail. It will log the IOASA if appropriate. Only called
4560 * for GPDD ops.
4561 *
4562 * Return value:
4563 * none
4564 **/
4565static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
fe964d0a 4566 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
1da177e4
LT		 4567{
4568 int i;
4569 u16 data_len;
b0692dd4 4570 u32 ioasc, fd_ioasc;
1da177e4
LT		 4571 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4572 __be32 *ioasa_data = (__be32 *)ioasa;
4573 int error_index;
4574
4575 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
b0692dd4 4576 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4577
4578 if (0 == ioasc)
4579 return;
4580
4581 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4582 return;
4583
b0692dd4
BK		 4584 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4585 error_index = ipr_get_error(fd_ioasc);
4586 else
4587 error_index = ipr_get_error(ioasc);
1da177e4
LT		 4588
4589 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4590 /* Don't log an error if the IOA already logged one */
4591 if (ioasa->ilid != 0)
4592 return;
4593
cc9bd5d4
BK		 4594 if (!ipr_is_gscsi(res))
4595 return;
4596
1da177e4
LT		 4597 if (ipr_error_table[error_index].log_ioasa == 0)
4598 return;
4599 }
4600
fe964d0a 4601 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
1da177e4
LT		 4602
4603 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4604 data_len = sizeof(struct ipr_ioasa);
4605 else
4606 data_len = be16_to_cpu(ioasa->ret_stat_len);
4607
4608 ipr_err("IOASA Dump:\n");
4609
4610 for (i = 0; i < data_len / 4; i += 4) {
4611 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4612 be32_to_cpu(ioasa_data[i]),
4613 be32_to_cpu(ioasa_data[i+1]),
4614 be32_to_cpu(ioasa_data[i+2]),
4615 be32_to_cpu(ioasa_data[i+3]));
4616 }
4617}
4618
4619/**
4620 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4621 * @ioasa: IOASA
4622 * @sense_buf: sense data buffer
4623 *
4624 * Return value:
4625 * none
4626 **/
4627static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4628{
4629 u32 failing_lba;
4630 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4631 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4632 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4633 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4634
4635 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4636
4637 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4638 return;
4639
4640 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4641
4642 if (ipr_is_vset_device(res) &&
4643 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4644 ioasa->u.vset.failing_lba_hi != 0) {
4645 sense_buf[0] = 0x72;
4646 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4647 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4648 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4649
4650 sense_buf[7] = 12;
4651 sense_buf[8] = 0;
4652 sense_buf[9] = 0x0A;
4653 sense_buf[10] = 0x80;
4654
4655 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4656
4657 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4658 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4659 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4660 sense_buf[15] = failing_lba & 0x000000ff;
4661
4662 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4663
4664 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4665 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4666 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4667 sense_buf[19] = failing_lba & 0x000000ff;
4668 } else {
4669 sense_buf[0] = 0x70;
4670 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4671 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4672 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4673
4674 /* Illegal request */
4675 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4676 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4677 sense_buf[7] = 10; /* additional length */
4678
4679 /* IOARCB was in error */
4680 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4681 sense_buf[15] = 0xC0;
4682 else /* Parameter data was invalid */
4683 sense_buf[15] = 0x80;
4684
4685 sense_buf[16] =
4686 ((IPR_FIELD_POINTER_MASK &
4687 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4688 sense_buf[17] =
4689 (IPR_FIELD_POINTER_MASK &
4690 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4691 } else {
4692 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4693 if (ipr_is_vset_device(res))
4694 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4695 else
4696 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4697
4698 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4699 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4700 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4701 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4702 sense_buf[6] = failing_lba & 0x000000ff;
4703 }
4704
4705 sense_buf[7] = 6; /* additional length */
4706 }
4707 }
4708}
4709
ee0a90fa
BK		 4710/**
4711 * ipr_get_autosense - Copy autosense data to sense buffer
4712 * @ipr_cmd: ipr command struct
4713 *
4714 * This function copies the autosense buffer to the buffer
4715 * in the scsi_cmd, if there is autosense available.
4716 *
4717 * Return value:
4718 * 1 if autosense was available / 0 if not
4719 **/
4720static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4721{
4722 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4723
117d2ce1 4724 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
ee0a90fa
BK		 4725 return 0;
4726
4727 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4728 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4729 SCSI_SENSE_BUFFERSIZE));
4730 return 1;
4731}
4732
1da177e4
LT		 4733/**
4734 * ipr_erp_start - Process an error response for a SCSI op
4735 * @ioa_cfg: ioa config struct
4736 * @ipr_cmd: ipr command struct
4737 *
4738 * This function determines whether or not to initiate ERP
4739 * on the affected device.
4740 *
4741 * Return value:
4742 * nothing
4743 **/
4744static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4745 struct ipr_cmnd *ipr_cmd)
4746{
4747 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4748 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4749 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
8a048994 4750 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
1da177e4
LT		 4751
4752 if (!res) {
4753 ipr_scsi_eh_done(ipr_cmd);
4754 return;
4755 }
4756
8a048994 4757 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
1da177e4
LT		 4758 ipr_gen_sense(ipr_cmd);
4759
cc9bd5d4
BK		 4760 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4761
8a048994 4762 switch (masked_ioasc) {
1da177e4 4763 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
ee0a90fa
BK		 4764 if (ipr_is_naca_model(res))
4765 scsi_cmd->result |= (DID_ABORT << 16);
4766 else
4767 scsi_cmd->result |= (DID_IMM_RETRY << 16);
1da177e4
LT		 4768 break;
4769 case IPR_IOASC_IR_RESOURCE_HANDLE:
b0df54bb 4770 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
1da177e4
LT		 4771 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4772 break;
4773 case IPR_IOASC_HW_SEL_TIMEOUT:
4774 scsi_cmd->result |= (DID_NO_CONNECT << 16);
ee0a90fa
BK		 4775 if (!ipr_is_naca_model(res))
4776 res->needs_sync_complete = 1;
1da177e4
LT		 4777 break;
4778 case IPR_IOASC_SYNC_REQUIRED:
4779 if (!res->in_erp)
4780 res->needs_sync_complete = 1;
4781 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4782 break;
4783 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
b0df54bb 4784 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
1da177e4
LT		 4785 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4786 break;
4787 case IPR_IOASC_BUS_WAS_RESET:
4788 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4789 /*
4790 * Report the bus reset and ask for a retry. The device
4791 * will give CC/UA the next command.
4792 */
4793 if (!res->resetting_device)
4794 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4795 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa
BK		 4796 if (!ipr_is_naca_model(res))
4797 res->needs_sync_complete = 1;
1da177e4
LT		 4798 break;
4799 case IPR_IOASC_HW_DEV_BUS_STATUS:
4800 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4801 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
ee0a90fa
BK		 4802 if (!ipr_get_autosense(ipr_cmd)) {
4803 if (!ipr_is_naca_model(res)) {
4804 ipr_erp_cancel_all(ipr_cmd);
4805 return;
4806 }
4807 }
1da177e4 4808 }
ee0a90fa
BK		 4809 if (!ipr_is_naca_model(res))
4810 res->needs_sync_complete = 1;
1da177e4
LT		 4811 break;
4812 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4813 break;
4814 default:
5b7304fb
BK		 4815 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4816 scsi_cmd->result |= (DID_ERROR << 16);
ee0a90fa 4817 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
1da177e4
LT		 4818 res->needs_sync_complete = 1;
4819 break;
4820 }
4821
4822 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4823 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4824 scsi_cmd->scsi_done(scsi_cmd);
4825}
4826
4827/**
4828 * ipr_scsi_done - mid-layer done function
4829 * @ipr_cmd: ipr command struct
4830 *
4831 * This function is invoked by the interrupt handler for
4832 * ops generated by the SCSI mid-layer
4833 *
4834 * Return value:
4835 * none
4836 **/
4837static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4838{
4839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4840 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4841 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4842
4843 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4844
4845 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4846 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4847 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4848 scsi_cmd->scsi_done(scsi_cmd);
4849 } else
4850 ipr_erp_start(ioa_cfg, ipr_cmd);
4851}
4852
1da177e4
LT		 4853/**
4854 * ipr_queuecommand - Queue a mid-layer request
4855 * @scsi_cmd: scsi command struct
4856 * @done: done function
4857 *
4858 * This function queues a request generated by the mid-layer.
4859 *
4860 * Return value:
4861 * 0 on success
4862 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4863 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4864 **/
4865static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4866 void (*done) (struct scsi_cmnd *))
4867{
4868 struct ipr_ioa_cfg *ioa_cfg;
4869 struct ipr_resource_entry *res;
4870 struct ipr_ioarcb *ioarcb;
4871 struct ipr_cmnd *ipr_cmd;
4872 int rc = 0;
4873
4874 scsi_cmd->scsi_done = done;
4875 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4876 res = scsi_cmd->device->hostdata;
4877 scsi_cmd->result = (DID_OK << 16);
4878
4879 /*
4880 * We are currently blocking all devices due to a host reset
4881 * We have told the host to stop giving us new requests, but
4882 * ERP ops don't count. FIXME
4883 */
4884 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4885 return SCSI_MLQUEUE_HOST_BUSY;
4886
4887 /*
4888 * FIXME - Create scsi_set_host_offline interface
4889 * and the ioa_is_dead check can be removed
4890 */
4891 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4892 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4893 scsi_cmd->result = (DID_NO_CONNECT << 16);
4894 scsi_cmd->scsi_done(scsi_cmd);
4895 return 0;
4896 }
4897
35a39691
BK		 4898 if (ipr_is_gata(res) && res->sata_port)
4899 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4900
1da177e4
LT		 4901 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4902 ioarcb = &ipr_cmd->ioarcb;
4903 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4904
4905 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4906 ipr_cmd->scsi_cmd = scsi_cmd;
4907 ioarcb->res_handle = res->cfgte.res_handle;
4908 ipr_cmd->done = ipr_scsi_done;
4909 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4910
4911 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4912 if (scsi_cmd->underflow == 0)
4913 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4914
4915 if (res->needs_sync_complete) {
4916 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4917 res->needs_sync_complete = 0;
4918 }
4919
4920 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4921 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4922 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4923 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4924 }
4925
4926 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4927 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4928 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4929
1da177e4
LT		 4930 if (likely(rc == 0))
4931 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4932
4933 if (likely(rc == 0)) {
4934 mb();
4935 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4936 ioa_cfg->regs.ioarrin_reg);
4937 } else {
4938 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4939 return SCSI_MLQUEUE_HOST_BUSY;
4940 }
4941
4942 return 0;
4943}
4944
35a39691
BK		 4945/**
4946 * ipr_ioctl - IOCTL handler
4947 * @sdev: scsi device struct
4948 * @cmd: IOCTL cmd
4949 * @arg: IOCTL arg
4950 *
4951 * Return value:
4952 * 0 on success / other on failure
4953 **/
bd705f2d 4954static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
35a39691
BK		 4955{
4956 struct ipr_resource_entry *res;
4957
4958 res = (struct ipr_resource_entry *)sdev->hostdata;
4959 if (res && ipr_is_gata(res))
4960 return ata_scsi_ioctl(sdev, cmd, arg);
4961
4962 return -EINVAL;
4963}
4964
1da177e4
LT		 4965/**
4966 * ipr_info - Get information about the card/driver
4967 * @scsi_host: scsi host struct
4968 *
4969 * Return value:
4970 * pointer to buffer with description string
4971 **/
4972static const char * ipr_ioa_info(struct Scsi_Host *host)
4973{
4974 static char buffer[512];
4975 struct ipr_ioa_cfg *ioa_cfg;
4976 unsigned long lock_flags = 0;
4977
4978 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4979
4980 spin_lock_irqsave(host->host_lock, lock_flags);
4981 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4982 spin_unlock_irqrestore(host->host_lock, lock_flags);
4983
4984 return buffer;
4985}
4986
4987static struct scsi_host_template driver_template = {
4988 .module = THIS_MODULE,
4989 .name = "IPR",
4990 .info = ipr_ioa_info,
35a39691 4991 .ioctl = ipr_ioctl,
1da177e4
LT		 4992 .queuecommand = ipr_queuecommand,
4993 .eh_abort_handler = ipr_eh_abort,
4994 .eh_device_reset_handler = ipr_eh_dev_reset,
4995 .eh_host_reset_handler = ipr_eh_host_reset,
4996 .slave_alloc = ipr_slave_alloc,
4997 .slave_configure = ipr_slave_configure,
4998 .slave_destroy = ipr_slave_destroy,
35a39691
BK		 4999 .target_alloc = ipr_target_alloc,
5000 .target_destroy = ipr_target_destroy,
1da177e4
LT		 5001 .change_queue_depth = ipr_change_queue_depth,
5002 .change_queue_type = ipr_change_queue_type,
5003 .bios_param = ipr_biosparam,
5004 .can_queue = IPR_MAX_COMMANDS,
5005 .this_id = -1,
5006 .sg_tablesize = IPR_MAX_SGLIST,
5007 .max_sectors = IPR_IOA_MAX_SECTORS,
5008 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
5009 .use_clustering = ENABLE_CLUSTERING,
5010 .shost_attrs = ipr_ioa_attrs,
5011 .sdev_attrs = ipr_dev_attrs,
5012 .proc_name = IPR_NAME
5013};
5014
35a39691
BK		 5015/**
5016 * ipr_ata_phy_reset - libata phy_reset handler
5017 * @ap: ata port to reset
5018 *
5019 **/
5020static void ipr_ata_phy_reset(struct ata_port *ap)
5021{
5022 unsigned long flags;
5023 struct ipr_sata_port *sata_port = ap->private_data;
5024 struct ipr_resource_entry *res = sata_port->res;
5025 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5026 int rc;
5027
5028 ENTER;
5029 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5030 while(ioa_cfg->in_reset_reload) {
5031 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5032 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5033 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5034 }
5035
5036 if (!ioa_cfg->allow_cmds)
5037 goto out_unlock;
5038
5039 rc = ipr_device_reset(ioa_cfg, res);
5040
5041 if (rc) {
5042 ap->ops->port_disable(ap);
5043 goto out_unlock;
5044 }
5045
5046 switch(res->cfgte.proto) {
5047 case IPR_PROTO_SATA:
5048 case IPR_PROTO_SAS_STP:
5049 ap->device[0].class = ATA_DEV_ATA;
5050 break;
5051 case IPR_PROTO_SATA_ATAPI:
5052 case IPR_PROTO_SAS_STP_ATAPI:
5053 ap->device[0].class = ATA_DEV_ATAPI;
5054 break;
5055 default:
5056 ap->device[0].class = ATA_DEV_UNKNOWN;
5057 ap->ops->port_disable(ap);
5058 break;
5059 };
5060
5061out_unlock:
5062 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5063 LEAVE;
5064}
5065
5066/**
5067 * ipr_ata_post_internal - Cleanup after an internal command
5068 * @qc: ATA queued command
5069 *
5070 * Return value:
5071 * none
5072 **/
5073static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5074{
5075 struct ipr_sata_port *sata_port = qc->ap->private_data;
5076 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5077 struct ipr_cmnd *ipr_cmd;
5078 unsigned long flags;
5079
5080 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
73d98ff0
BK		 5081 while(ioa_cfg->in_reset_reload) {
5082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5083 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5084 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5085 }
5086
35a39691
BK		 5087 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5088 if (ipr_cmd->qc == qc) {
5089 ipr_device_reset(ioa_cfg, sata_port->res);
5090 break;
5091 }
5092 }
5093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5094}
5095
5096/**
5097 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5098 * @ap: ATA port
5099 * @tf: destination ATA taskfile
5100 *
5101 * Return value:
5102 * none
5103 **/
5104static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5105{
5106 struct ipr_sata_port *sata_port = ap->private_data;
5107 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5108
5109 tf->feature = g->error;
5110 tf->nsect = g->nsect;
5111 tf->lbal = g->lbal;
5112 tf->lbam = g->lbam;
5113 tf->lbah = g->lbah;
5114 tf->device = g->device;
5115 tf->command = g->status;
5116 tf->hob_nsect = g->hob_nsect;
5117 tf->hob_lbal = g->hob_lbal;
5118 tf->hob_lbam = g->hob_lbam;
5119 tf->hob_lbah = g->hob_lbah;
5120 tf->ctl = g->alt_status;
5121}
5122
5123/**
5124 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5125 * @regs: destination
5126 * @tf: source ATA taskfile
5127 *
5128 * Return value:
5129 * none
5130 **/
5131static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5132 struct ata_taskfile *tf)
5133{
5134 regs->feature = tf->feature;
5135 regs->nsect = tf->nsect;
5136 regs->lbal = tf->lbal;
5137 regs->lbam = tf->lbam;
5138 regs->lbah = tf->lbah;
5139 regs->device = tf->device;
5140 regs->command = tf->command;
5141 regs->hob_feature = tf->hob_feature;
5142 regs->hob_nsect = tf->hob_nsect;
5143 regs->hob_lbal = tf->hob_lbal;
5144 regs->hob_lbam = tf->hob_lbam;
5145 regs->hob_lbah = tf->hob_lbah;
5146 regs->ctl = tf->ctl;
5147}
5148
5149/**
5150 * ipr_sata_done - done function for SATA commands
5151 * @ipr_cmd: ipr command struct
5152 *
5153 * This function is invoked by the interrupt handler for
5154 * ops generated by the SCSI mid-layer to SATA devices
5155 *
5156 * Return value:
5157 * none
5158 **/
5159static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5160{
5161 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5162 struct ata_queued_cmd *qc = ipr_cmd->qc;
5163 struct ipr_sata_port *sata_port = qc->ap->private_data;
5164 struct ipr_resource_entry *res = sata_port->res;
5165 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5166
5167 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5168 sizeof(struct ipr_ioasa_gata));
5169 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5170
5171 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5172 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5173 res->cfgte.res_addr.target);
5174
5175 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5176 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5177 else
5178 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5179 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5180 ata_qc_complete(qc);
5181}
5182
5183/**
5184 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5185 * @ipr_cmd: ipr command struct
5186 * @qc: ATA queued command
5187 *
5188 **/
5189static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5190 struct ata_queued_cmd *qc)
5191{
5192 u32 ioadl_flags = 0;
5193 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5194 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5195 int len = qc->nbytes + qc->pad_len;
5196 struct scatterlist *sg;
5197
5198 if (len == 0)
5199 return;
5200
5201 if (qc->dma_dir == DMA_TO_DEVICE) {
5202 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5203 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5204 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5205 ioarcb->write_ioadl_len =
5206 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5207 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5208 ioadl_flags = IPR_IOADL_FLAGS_READ;
5209 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5210 ioarcb->read_ioadl_len =
5211 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5212 }
5213
5214 ata_for_each_sg(sg, qc) {
5215 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5216 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5217 if (ata_sg_is_last(sg, qc))
5218 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5219 else
5220 ioadl++;
5221 }
5222}
5223
5224/**
5225 * ipr_qc_issue - Issue a SATA qc to a device
5226 * @qc: queued command
5227 *
5228 * Return value:
5229 * 0 if success
5230 **/
5231static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5232{
5233 struct ata_port *ap = qc->ap;
5234 struct ipr_sata_port *sata_port = ap->private_data;
5235 struct ipr_resource_entry *res = sata_port->res;
5236 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5237 struct ipr_cmnd *ipr_cmd;
5238 struct ipr_ioarcb *ioarcb;
5239 struct ipr_ioarcb_ata_regs *regs;
5240
5241 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
0feeed82 5242 return AC_ERR_SYSTEM;
35a39691
BK		 5243
5244 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5245 ioarcb = &ipr_cmd->ioarcb;
5246 regs = &ioarcb->add_data.u.regs;
5247
5248 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5249 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5250
5251 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5252 ipr_cmd->qc = qc;
5253 ipr_cmd->done = ipr_sata_done;
5254 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5255 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5256 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5257 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5258 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5259
5260 ipr_build_ata_ioadl(ipr_cmd, qc);
5261 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5262 ipr_copy_sata_tf(regs, &qc->tf);
5263 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5264 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5265
5266 switch (qc->tf.protocol) {
5267 case ATA_PROT_NODATA:
5268 case ATA_PROT_PIO:
5269 break;
5270
5271 case ATA_PROT_DMA:
5272 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5273 break;
5274
5275 case ATA_PROT_ATAPI:
5276 case ATA_PROT_ATAPI_NODATA:
5277 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5278 break;
5279
5280 case ATA_PROT_ATAPI_DMA:
5281 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5282 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5283 break;
5284
5285 default:
5286 WARN_ON(1);
0feeed82 5287 return AC_ERR_INVALID;
35a39691
BK		 5288 }
5289
5290 mb();
5291 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5292 ioa_cfg->regs.ioarrin_reg);
5293 return 0;
5294}
5295
5296/**
5297 * ipr_ata_check_status - Return last ATA status
5298 * @ap: ATA port
5299 *
5300 * Return value:
5301 * ATA status
5302 **/
5303static u8 ipr_ata_check_status(struct ata_port *ap)
5304{
5305 struct ipr_sata_port *sata_port = ap->private_data;
5306 return sata_port->ioasa.status;
5307}
5308
5309/**
5310 * ipr_ata_check_altstatus - Return last ATA altstatus
5311 * @ap: ATA port
5312 *
5313 * Return value:
5314 * Alt ATA status
5315 **/
5316static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5317{
5318 struct ipr_sata_port *sata_port = ap->private_data;
5319 return sata_port->ioasa.alt_status;
5320}
5321
5322static struct ata_port_operations ipr_sata_ops = {
5323 .port_disable = ata_port_disable,
5324 .check_status = ipr_ata_check_status,
5325 .check_altstatus = ipr_ata_check_altstatus,
5326 .dev_select = ata_noop_dev_select,
5327 .phy_reset = ipr_ata_phy_reset,
5328 .post_internal_cmd = ipr_ata_post_internal,
5329 .tf_read = ipr_tf_read,
5330 .qc_prep = ata_noop_qc_prep,
5331 .qc_issue = ipr_qc_issue,
5332 .port_start = ata_sas_port_start,
5333 .port_stop = ata_sas_port_stop
5334};
5335
5336static struct ata_port_info sata_port_info = {
5337 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5338 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5339 .pio_mask = 0x10, /* pio4 */
5340 .mwdma_mask = 0x07,
5341 .udma_mask = 0x7f, /* udma0-6 */
5342 .port_ops = &ipr_sata_ops
5343};
5344
1da177e4
LT		 5345#ifdef CONFIG_PPC_PSERIES
5346static const u16 ipr_blocked_processors[] = {
5347 PV_NORTHSTAR,
5348 PV_PULSAR,
5349 PV_POWER4,
5350 PV_ICESTAR,
5351 PV_SSTAR,
5352 PV_POWER4p,
5353 PV_630,
5354 PV_630p
5355};
5356
5357/**
5358 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5359 * @ioa_cfg: ioa cfg struct
5360 *
5361 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5362 * certain pSeries hardware. This function determines if the given
5363 * adapter is in one of these confgurations or not.
5364 *
5365 * Return value:
5366 * 1 if adapter is not supported / 0 if adapter is supported
5367 **/
5368static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5369{
5370 u8 rev_id;
5371 int i;
5372
5373 if (ioa_cfg->type == 0x5702) {
5374 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5375 &rev_id) == PCIBIOS_SUCCESSFUL) {
5376 if (rev_id < 4) {
5377 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5378 if (__is_processor(ipr_blocked_processors[i]))
5379 return 1;
5380 }
5381 }
5382 }
5383 }
5384 return 0;
5385}
5386#else
5387#define ipr_invalid_adapter(ioa_cfg) 0
5388#endif
5389
5390/**
5391 * ipr_ioa_bringdown_done - IOA bring down completion.
5392 * @ipr_cmd: ipr command struct
5393 *
5394 * This function processes the completion of an adapter bring down.
5395 * It wakes any reset sleepers.
5396 *
5397 * Return value:
5398 * IPR_RC_JOB_RETURN
5399 **/
5400static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5401{
5402 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5403
5404 ENTER;
5405 ioa_cfg->in_reset_reload = 0;
5406 ioa_cfg->reset_retries = 0;
5407 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5408 wake_up_all(&ioa_cfg->reset_wait_q);
5409
5410 spin_unlock_irq(ioa_cfg->host->host_lock);
5411 scsi_unblock_requests(ioa_cfg->host);
5412 spin_lock_irq(ioa_cfg->host->host_lock);
5413 LEAVE;
5414
5415 return IPR_RC_JOB_RETURN;
5416}
5417
5418/**
5419 * ipr_ioa_reset_done - IOA reset completion.
5420 * @ipr_cmd: ipr command struct
5421 *
5422 * This function processes the completion of an adapter reset.
5423 * It schedules any necessary mid-layer add/removes and
5424 * wakes any reset sleepers.
5425 *
5426 * Return value:
5427 * IPR_RC_JOB_RETURN
5428 **/
5429static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5430{
5431 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5432 struct ipr_resource_entry *res;
5433 struct ipr_hostrcb *hostrcb, *temp;
5434 int i = 0;
5435
5436 ENTER;
5437 ioa_cfg->in_reset_reload = 0;
5438 ioa_cfg->allow_cmds = 1;
5439 ioa_cfg->reset_cmd = NULL;
3d1d0da6 5440 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
1da177e4
LT		 5441
5442 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5443 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5444 ipr_trace;
5445 break;
5446 }
5447 }
5448 schedule_work(&ioa_cfg->work_q);
5449
5450 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5451 list_del(&hostrcb->queue);
5452 if (i++ < IPR_NUM_LOG_HCAMS)
5453 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5454 else
5455 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5456 }
5457
6bb04170 5458 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
1da177e4
LT		 5459 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5460
5461 ioa_cfg->reset_retries = 0;
5462 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5463 wake_up_all(&ioa_cfg->reset_wait_q);
5464
5465 spin_unlock_irq(ioa_cfg->host->host_lock);
5466 scsi_unblock_requests(ioa_cfg->host);
5467 spin_lock_irq(ioa_cfg->host->host_lock);
5468
5469 if (!ioa_cfg->allow_cmds)
5470 scsi_block_requests(ioa_cfg->host);
5471
5472 LEAVE;
5473 return IPR_RC_JOB_RETURN;
5474}
5475
5476/**
5477 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5478 * @supported_dev: supported device struct
5479 * @vpids: vendor product id struct
5480 *
5481 * Return value:
5482 * none
5483 **/
5484static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5485 struct ipr_std_inq_vpids *vpids)
5486{
5487 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5488 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5489 supported_dev->num_records = 1;
5490 supported_dev->data_length =
5491 cpu_to_be16(sizeof(struct ipr_supported_device));
5492 supported_dev->reserved = 0;
5493}
5494
5495/**
5496 * ipr_set_supported_devs - Send Set Supported Devices for a device
5497 * @ipr_cmd: ipr command struct
5498 *
5499 * This function send a Set Supported Devices to the adapter
5500 *
5501 * Return value:
5502 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5503 **/
5504static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5505{
5506 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5507 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5508 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5509 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5510 struct ipr_resource_entry *res = ipr_cmd->u.res;
5511
5512 ipr_cmd->job_step = ipr_ioa_reset_done;
5513
5514 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
e4fbf44e 5515 if (!ipr_is_scsi_disk(res))
1da177e4
LT		 5516 continue;
5517
5518 ipr_cmd->u.res = res;
5519 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5520
5521 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5522 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5523 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5524
5525 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5526 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5527 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5528
5529 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5530 sizeof(struct ipr_supported_device));
5531 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5532 offsetof(struct ipr_misc_cbs, supp_dev));
5533 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5534 ioarcb->write_data_transfer_length =
5535 cpu_to_be32(sizeof(struct ipr_supported_device));
5536
5537 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5538 IPR_SET_SUP_DEVICE_TIMEOUT);
5539
5540 ipr_cmd->job_step = ipr_set_supported_devs;
5541 return IPR_RC_JOB_RETURN;
5542 }
5543
5544 return IPR_RC_JOB_CONTINUE;
5545}
5546
62275040
BK		 5547/**
5548 * ipr_setup_write_cache - Disable write cache if needed
5549 * @ipr_cmd: ipr command struct
5550 *
5551 * This function sets up adapters write cache to desired setting
5552 *
5553 * Return value:
5554 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5555 **/
5556static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5557{
5558 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5559
5560 ipr_cmd->job_step = ipr_set_supported_devs;
5561 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5562 struct ipr_resource_entry, queue);
5563
5564 if (ioa_cfg->cache_state != CACHE_DISABLED)
5565 return IPR_RC_JOB_CONTINUE;
5566
5567 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5568 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5569 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5570 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5571
5572 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5573
5574 return IPR_RC_JOB_RETURN;
5575}
5576
1da177e4
LT		 5577/**
5578 * ipr_get_mode_page - Locate specified mode page
5579 * @mode_pages: mode page buffer
5580 * @page_code: page code to find
5581 * @len: minimum required length for mode page
5582 *
5583 * Return value:
5584 * pointer to mode page / NULL on failure
5585 **/
5586static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5587 u32 page_code, u32 len)
5588{
5589 struct ipr_mode_page_hdr *mode_hdr;
5590 u32 page_length;
5591 u32 length;
5592
5593 if (!mode_pages || (mode_pages->hdr.length == 0))
5594 return NULL;
5595
5596 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5597 mode_hdr = (struct ipr_mode_page_hdr *)
5598 (mode_pages->data + mode_pages->hdr.block_desc_len);
5599
5600 while (length) {
5601 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5602 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5603 return mode_hdr;
5604 break;
5605 } else {
5606 page_length = (sizeof(struct ipr_mode_page_hdr) +
5607 mode_hdr->page_length);
5608 length -= page_length;
5609 mode_hdr = (struct ipr_mode_page_hdr *)
5610 ((unsigned long)mode_hdr + page_length);
5611 }
5612 }
5613 return NULL;
5614}
5615
5616/**
5617 * ipr_check_term_power - Check for term power errors
5618 * @ioa_cfg: ioa config struct
5619 * @mode_pages: IOAFP mode pages buffer
5620 *
5621 * Check the IOAFP's mode page 28 for term power errors
5622 *
5623 * Return value:
5624 * nothing
5625 **/
5626static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5627 struct ipr_mode_pages *mode_pages)
5628{
5629 int i;
5630 int entry_length;
5631 struct ipr_dev_bus_entry *bus;
5632 struct ipr_mode_page28 *mode_page;
5633
5634 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5635 sizeof(struct ipr_mode_page28));
5636
5637 entry_length = mode_page->entry_length;
5638
5639 bus = mode_page->bus;
5640
5641 for (i = 0; i < mode_page->num_entries; i++) {
5642 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5643 dev_err(&ioa_cfg->pdev->dev,
5644 "Term power is absent on scsi bus %d\n",
5645 bus->res_addr.bus);
5646 }
5647
5648 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5649 }
5650}
5651
5652/**
5653 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5654 * @ioa_cfg: ioa config struct
5655 *
5656 * Looks through the config table checking for SES devices. If
5657 * the SES device is in the SES table indicating a maximum SCSI
5658 * bus speed, the speed is limited for the bus.
5659 *
5660 * Return value:
5661 * none
5662 **/
5663static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5664{
5665 u32 max_xfer_rate;
5666 int i;
5667
5668 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5669 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5670 ioa_cfg->bus_attr[i].bus_width);
5671
5672 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5673 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5674 }
5675}
5676
5677/**
5678 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5679 * @ioa_cfg: ioa config struct
5680 * @mode_pages: mode page 28 buffer
5681 *
5682 * Updates mode page 28 based on driver configuration
5683 *
5684 * Return value:
5685 * none
5686 **/
5687static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5688 struct ipr_mode_pages *mode_pages)
5689{
5690 int i, entry_length;
5691 struct ipr_dev_bus_entry *bus;
5692 struct ipr_bus_attributes *bus_attr;
5693 struct ipr_mode_page28 *mode_page;
5694
5695 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5696 sizeof(struct ipr_mode_page28));
5697
5698 entry_length = mode_page->entry_length;
5699
5700 /* Loop for each device bus entry */
5701 for (i = 0, bus = mode_page->bus;
5702 i < mode_page->num_entries;
5703 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5704 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5705 dev_err(&ioa_cfg->pdev->dev,
5706 "Invalid resource address reported: 0x%08X\n",
5707 IPR_GET_PHYS_LOC(bus->res_addr));
5708 continue;
5709 }
5710
5711 bus_attr = &ioa_cfg->bus_attr[i];
5712 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5713 bus->bus_width = bus_attr->bus_width;
5714 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5715 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5716 if (bus_attr->qas_enabled)
5717 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5718 else
5719 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5720 }
5721}
5722
5723/**
5724 * ipr_build_mode_select - Build a mode select command
5725 * @ipr_cmd: ipr command struct
5726 * @res_handle: resource handle to send command to
5727 * @parm: Byte 2 of Mode Sense command
5728 * @dma_addr: DMA buffer address
5729 * @xfer_len: data transfer length
5730 *
5731 * Return value:
5732 * none
5733 **/
5734static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5735 __be32 res_handle, u8 parm, u32 dma_addr,
5736 u8 xfer_len)
5737{
5738 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5739 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5740
5741 ioarcb->res_handle = res_handle;
5742 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5743 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5744 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5745 ioarcb->cmd_pkt.cdb[1] = parm;
5746 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5747
5748 ioadl->flags_and_data_len =
5749 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5750 ioadl->address = cpu_to_be32(dma_addr);
5751 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5752 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5753}
5754
5755/**
5756 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5757 * @ipr_cmd: ipr command struct
5758 *
5759 * This function sets up the SCSI bus attributes and sends
5760 * a Mode Select for Page 28 to activate them.
5761 *
5762 * Return value:
5763 * IPR_RC_JOB_RETURN
5764 **/
5765static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5766{
5767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5768 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5769 int length;
5770
5771 ENTER;
4733804c
BK		 5772 ipr_scsi_bus_speed_limit(ioa_cfg);
5773 ipr_check_term_power(ioa_cfg, mode_pages);
5774 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5775 length = mode_pages->hdr.length + 1;
5776 mode_pages->hdr.length = 0;
1da177e4
LT		 5777
5778 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5779 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5780 length);
5781
62275040 5782 ipr_cmd->job_step = ipr_setup_write_cache;
1da177e4
LT		 5783 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5784
5785 LEAVE;
5786 return IPR_RC_JOB_RETURN;
5787}
5788
5789/**
5790 * ipr_build_mode_sense - Builds a mode sense command
5791 * @ipr_cmd: ipr command struct
5792 * @res: resource entry struct
5793 * @parm: Byte 2 of mode sense command
5794 * @dma_addr: DMA address of mode sense buffer
5795 * @xfer_len: Size of DMA buffer
5796 *
5797 * Return value:
5798 * none
5799 **/
5800static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5801 __be32 res_handle,
5802 u8 parm, u32 dma_addr, u8 xfer_len)
5803{
5804 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5805 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5806
5807 ioarcb->res_handle = res_handle;
5808 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5809 ioarcb->cmd_pkt.cdb[2] = parm;
5810 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5811 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5812
5813 ioadl->flags_and_data_len =
5814 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5815 ioadl->address = cpu_to_be32(dma_addr);
5816 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5817 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5818}
5819
dfed823e
BK		 5820/**
5821 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5822 * @ipr_cmd: ipr command struct
5823 *
5824 * This function handles the failure of an IOA bringup command.
5825 *
5826 * Return value:
5827 * IPR_RC_JOB_RETURN
5828 **/
5829static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5830{
5831 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5832 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5833
5834 dev_err(&ioa_cfg->pdev->dev,
5835 "0x%02X failed with IOASC: 0x%08X\n",
5836 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5837
5838 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5839 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5840 return IPR_RC_JOB_RETURN;
5841}
5842
5843/**
5844 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5845 * @ipr_cmd: ipr command struct
5846 *
5847 * This function handles the failure of a Mode Sense to the IOAFP.
5848 * Some adapters do not handle all mode pages.
5849 *
5850 * Return value:
5851 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5852 **/
5853static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5854{
5855 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5856
5857 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5858 ipr_cmd->job_step = ipr_setup_write_cache;
5859 return IPR_RC_JOB_CONTINUE;
5860 }
5861
5862 return ipr_reset_cmd_failed(ipr_cmd);
5863}
5864
1da177e4
LT		 5865/**
5866 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5867 * @ipr_cmd: ipr command struct
5868 *
5869 * This function send a Page 28 mode sense to the IOA to
5870 * retrieve SCSI bus attributes.
5871 *
5872 * Return value:
5873 * IPR_RC_JOB_RETURN
5874 **/
5875static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5876{
5877 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5878
5879 ENTER;
5880 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5881 0x28, ioa_cfg->vpd_cbs_dma +
5882 offsetof(struct ipr_misc_cbs, mode_pages),
5883 sizeof(struct ipr_mode_pages));
5884
5885 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
dfed823e 5886 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
1da177e4
LT		 5887
5888 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5889
5890 LEAVE;
5891 return IPR_RC_JOB_RETURN;
5892}
5893
ac09c349
BK		 5894/**
5895 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5896 * @ipr_cmd: ipr command struct
5897 *
5898 * This function enables dual IOA RAID support if possible.
5899 *
5900 * Return value:
5901 * IPR_RC_JOB_RETURN
5902 **/
5903static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5904{
5905 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5906 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5907 struct ipr_mode_page24 *mode_page;
5908 int length;
5909
5910 ENTER;
5911 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5912 sizeof(struct ipr_mode_page24));
5913
5914 if (mode_page)
5915 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5916
5917 length = mode_pages->hdr.length + 1;
5918 mode_pages->hdr.length = 0;
5919
5920 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5921 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5922 length);
5923
5924 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5925 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5926
5927 LEAVE;
5928 return IPR_RC_JOB_RETURN;
5929}
5930
5931/**
5932 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5933 * @ipr_cmd: ipr command struct
5934 *
5935 * This function handles the failure of a Mode Sense to the IOAFP.
5936 * Some adapters do not handle all mode pages.
5937 *
5938 * Return value:
5939 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5940 **/
5941static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5942{
5943 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5944
5945 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5946 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5947 return IPR_RC_JOB_CONTINUE;
5948 }
5949
5950 return ipr_reset_cmd_failed(ipr_cmd);
5951}
5952
5953/**
5954 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5955 * @ipr_cmd: ipr command struct
5956 *
5957 * This function send a mode sense to the IOA to retrieve
5958 * the IOA Advanced Function Control mode page.
5959 *
5960 * Return value:
5961 * IPR_RC_JOB_RETURN
5962 **/
5963static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5964{
5965 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5966
5967 ENTER;
5968 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5969 0x24, ioa_cfg->vpd_cbs_dma +
5970 offsetof(struct ipr_misc_cbs, mode_pages),
5971 sizeof(struct ipr_mode_pages));
5972
5973 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5974 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5975
5976 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5977
5978 LEAVE;
5979 return IPR_RC_JOB_RETURN;
5980}
5981
1da177e4
LT		 5982/**
5983 * ipr_init_res_table - Initialize the resource table
5984 * @ipr_cmd: ipr command struct
5985 *
5986 * This function looks through the existing resource table, comparing
5987 * it with the config table. This function will take care of old/new
5988 * devices and schedule adding/removing them from the mid-layer
5989 * as appropriate.
5990 *
5991 * Return value:
5992 * IPR_RC_JOB_CONTINUE
5993 **/
5994static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5995{
5996 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5997 struct ipr_resource_entry *res, *temp;
5998 struct ipr_config_table_entry *cfgte;
5999 int found, i;
6000 LIST_HEAD(old_res);
6001
6002 ENTER;
6003 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
6004 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
6005
6006 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
6007 list_move_tail(&res->queue, &old_res);
6008
6009 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
6010 cfgte = &ioa_cfg->cfg_table->dev[i];
6011 found = 0;
6012
6013 list_for_each_entry_safe(res, temp, &old_res, queue) {
6014 if (!memcmp(&res->cfgte.res_addr,
6015 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
6016 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6017 found = 1;
6018 break;
6019 }
6020 }
6021
6022 if (!found) {
6023 if (list_empty(&ioa_cfg->free_res_q)) {
6024 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
6025 break;
6026 }
6027
6028 found = 1;
6029 res = list_entry(ioa_cfg->free_res_q.next,
6030 struct ipr_resource_entry, queue);
6031 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6032 ipr_init_res_entry(res);
6033 res->add_to_ml = 1;
6034 }
6035
6036 if (found)
6037 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
6038 }
6039
6040 list_for_each_entry_safe(res, temp, &old_res, queue) {
6041 if (res->sdev) {
6042 res->del_from_ml = 1;
1121b794 6043 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
1da177e4
LT		 6044 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6045 } else {
6046 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6047 }
6048 }
6049
ac09c349
BK		 6050 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6051 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6052 else
6053 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
1da177e4
LT		 6054
6055 LEAVE;
6056 return IPR_RC_JOB_CONTINUE;
6057}
6058
6059/**
6060 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6061 * @ipr_cmd: ipr command struct
6062 *
6063 * This function sends a Query IOA Configuration command
6064 * to the adapter to retrieve the IOA configuration table.
6065 *
6066 * Return value:
6067 * IPR_RC_JOB_RETURN
6068 **/
6069static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6070{
6071 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6072 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6073 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6074 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
ac09c349 6075 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
1da177e4
LT		 6076
6077 ENTER;
ac09c349
BK		 6078 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6079 ioa_cfg->dual_raid = 1;
1da177e4
LT		 6080 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6081 ucode_vpd->major_release, ucode_vpd->card_type,
6082 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6083 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6084 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6085
6086 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6087 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6088 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6089
6090 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6091 ioarcb->read_data_transfer_length =
6092 cpu_to_be32(sizeof(struct ipr_config_table));
6093
6094 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6095 ioadl->flags_and_data_len =
6096 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6097
6098 ipr_cmd->job_step = ipr_init_res_table;
6099
6100 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6101
6102 LEAVE;
6103 return IPR_RC_JOB_RETURN;
6104}
6105
6106/**
6107 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6108 * @ipr_cmd: ipr command struct
6109 *
6110 * This utility function sends an inquiry to the adapter.
6111 *
6112 * Return value:
6113 * none
6114 **/
6115static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6116 u32 dma_addr, u8 xfer_len)
6117{
6118 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6119 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6120
6121 ENTER;
6122 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6123 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6124
6125 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6126 ioarcb->cmd_pkt.cdb[1] = flags;
6127 ioarcb->cmd_pkt.cdb[2] = page;
6128 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6129
6130 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6131 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6132
6133 ioadl->address = cpu_to_be32(dma_addr);
6134 ioadl->flags_and_data_len =
6135 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6136
6137 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6138 LEAVE;
6139}
6140
62275040
BK		 6141/**
6142 * ipr_inquiry_page_supported - Is the given inquiry page supported
6143 * @page0: inquiry page 0 buffer
6144 * @page: page code.
6145 *
6146 * This function determines if the specified inquiry page is supported.
6147 *
6148 * Return value:
6149 * 1 if page is supported / 0 if not
6150 **/
6151static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6152{
6153 int i;
6154
6155 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6156 if (page0->page[i] == page)
6157 return 1;
6158
6159 return 0;
6160}
6161
ac09c349
BK		 6162/**
6163 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6164 * @ipr_cmd: ipr command struct
6165 *
6166 * This function sends a Page 0xD0 inquiry to the adapter
6167 * to retrieve adapter capabilities.
6168 *
6169 * Return value:
6170 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6171 **/
6172static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6173{
6174 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6175 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6176 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6177
6178 ENTER;
6179 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6180 memset(cap, 0, sizeof(*cap));
6181
6182 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6183 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6184 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6185 sizeof(struct ipr_inquiry_cap));
6186 return IPR_RC_JOB_RETURN;
6187 }
6188
6189 LEAVE;
6190 return IPR_RC_JOB_CONTINUE;
6191}
6192
1da177e4
LT		 6193/**
6194 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6195 * @ipr_cmd: ipr command struct
6196 *
6197 * This function sends a Page 3 inquiry to the adapter
6198 * to retrieve software VPD information.
6199 *
6200 * Return value:
6201 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6202 **/
6203static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
62275040
BK		 6204{
6205 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6206 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6207
6208 ENTER;
6209
6210 if (!ipr_inquiry_page_supported(page0, 1))
6211 ioa_cfg->cache_state = CACHE_NONE;
6212
ac09c349 6213 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
62275040
BK		 6214
6215 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6216 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6217 sizeof(struct ipr_inquiry_page3));
6218
6219 LEAVE;
6220 return IPR_RC_JOB_RETURN;
6221}
6222
6223/**
6224 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6225 * @ipr_cmd: ipr command struct
6226 *
6227 * This function sends a Page 0 inquiry to the adapter
6228 * to retrieve supported inquiry pages.
6229 *
6230 * Return value:
6231 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6232 **/
6233static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
1da177e4
LT		 6234{
6235 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6236 char type[5];
6237
6238 ENTER;
6239
6240 /* Grab the type out of the VPD and store it away */
6241 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6242 type[4] = '\0';
6243 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6244
62275040 6245 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
1da177e4 6246
62275040
BK		 6247 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6248 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6249 sizeof(struct ipr_inquiry_page0));
1da177e4
LT		 6250
6251 LEAVE;
6252 return IPR_RC_JOB_RETURN;
6253}
6254
6255/**
6256 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6257 * @ipr_cmd: ipr command struct
6258 *
6259 * This function sends a standard inquiry to the adapter.
6260 *
6261 * Return value:
6262 * IPR_RC_JOB_RETURN
6263 **/
6264static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6265{
6266 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6267
6268 ENTER;
62275040 6269 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
1da177e4
LT		 6270
6271 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6272 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6273 sizeof(struct ipr_ioa_vpd));
6274
6275 LEAVE;
6276 return IPR_RC_JOB_RETURN;
6277}
6278
6279/**
6280 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6281 * @ipr_cmd: ipr command struct
6282 *
6283 * This function send an Identify Host Request Response Queue
6284 * command to establish the HRRQ with the adapter.
6285 *
6286 * Return value:
6287 * IPR_RC_JOB_RETURN
6288 **/
6289static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6290{
6291 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6292 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6293
6294 ENTER;
6295 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6296
6297 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6298 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6299
6300 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6301 ioarcb->cmd_pkt.cdb[2] =
6302 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6303 ioarcb->cmd_pkt.cdb[3] =
6304 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6305 ioarcb->cmd_pkt.cdb[4] =
6306 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6307 ioarcb->cmd_pkt.cdb[5] =
6308 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6309 ioarcb->cmd_pkt.cdb[7] =
6310 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6311 ioarcb->cmd_pkt.cdb[8] =
6312 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6313
6314 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6315
6316 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6317
6318 LEAVE;
6319 return IPR_RC_JOB_RETURN;
6320}
6321
6322/**
6323 * ipr_reset_timer_done - Adapter reset timer function
6324 * @ipr_cmd: ipr command struct
6325 *
6326 * Description: This function is used in adapter reset processing
6327 * for timing events. If the reset_cmd pointer in the IOA
6328 * config struct is not this adapter's we are doing nested
6329 * resets and fail_all_ops will take care of freeing the
6330 * command block.
6331 *
6332 * Return value:
6333 * none
6334 **/
6335static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6336{
6337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6338 unsigned long lock_flags = 0;
6339
6340 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6341
6342 if (ioa_cfg->reset_cmd == ipr_cmd) {
6343 list_del(&ipr_cmd->queue);
6344 ipr_cmd->done(ipr_cmd);
6345 }
6346
6347 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6348}
6349
6350/**
6351 * ipr_reset_start_timer - Start a timer for adapter reset job
6352 * @ipr_cmd: ipr command struct
6353 * @timeout: timeout value
6354 *
6355 * Description: This function is used in adapter reset processing
6356 * for timing events. If the reset_cmd pointer in the IOA
6357 * config struct is not this adapter's we are doing nested
6358 * resets and fail_all_ops will take care of freeing the
6359 * command block.
6360 *
6361 * Return value:
6362 * none
6363 **/
6364static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6365 unsigned long timeout)
6366{
6367 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6368 ipr_cmd->done = ipr_reset_ioa_job;
6369
6370 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6371 ipr_cmd->timer.expires = jiffies + timeout;
6372 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6373 add_timer(&ipr_cmd->timer);
6374}
6375
6376/**
6377 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6378 * @ioa_cfg: ioa cfg struct
6379 *
6380 * Return value:
6381 * nothing
6382 **/
6383static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6384{
6385 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6386
6387 /* Initialize Host RRQ pointers */
6388 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6389 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6390 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6391 ioa_cfg->toggle_bit = 1;
6392
6393 /* Zero out config table */
6394 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6395}
6396
6397/**
6398 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6399 * @ipr_cmd: ipr command struct
6400 *
6401 * This function reinitializes some control blocks and
6402 * enables destructive diagnostics on the adapter.
6403 *
6404 * Return value:
6405 * IPR_RC_JOB_RETURN
6406 **/
6407static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6408{
6409 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6410 volatile u32 int_reg;
6411
6412 ENTER;
6413 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6414 ipr_init_ioa_mem(ioa_cfg);
6415
6416 ioa_cfg->allow_interrupts = 1;
6417 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6418
6419 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6420 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6421 ioa_cfg->regs.clr_interrupt_mask_reg);
6422 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6423 return IPR_RC_JOB_CONTINUE;
6424 }
6425
6426 /* Enable destructive diagnostics on IOA */
3d1d0da6 6427 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
1da177e4
LT		 6428
6429 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6430 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6431
6432 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6433
6434 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5469cb5b 6435 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
1da177e4
LT		 6436 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6437 ipr_cmd->done = ipr_reset_ioa_job;
6438 add_timer(&ipr_cmd->timer);
6439 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6440
6441 LEAVE;
6442 return IPR_RC_JOB_RETURN;
6443}
6444
6445/**
6446 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6447 * @ipr_cmd: ipr command struct
6448 *
6449 * This function is invoked when an adapter dump has run out
6450 * of processing time.
6451 *
6452 * Return value:
6453 * IPR_RC_JOB_CONTINUE
6454 **/
6455static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6456{
6457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6458
6459 if (ioa_cfg->sdt_state == GET_DUMP)
6460 ioa_cfg->sdt_state = ABORT_DUMP;
6461
6462 ipr_cmd->job_step = ipr_reset_alert;
6463
6464 return IPR_RC_JOB_CONTINUE;
6465}
6466
6467/**
6468 * ipr_unit_check_no_data - Log a unit check/no data error log
6469 * @ioa_cfg: ioa config struct
6470 *
6471 * Logs an error indicating the adapter unit checked, but for some
6472 * reason, we were unable to fetch the unit check buffer.
6473 *
6474 * Return value:
6475 * nothing
6476 **/
6477static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6478{
6479 ioa_cfg->errors_logged++;
6480 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6481}
6482
6483/**
6484 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6485 * @ioa_cfg: ioa config struct
6486 *
6487 * Fetches the unit check buffer from the adapter by clocking the data
6488 * through the mailbox register.
6489 *
6490 * Return value:
6491 * nothing
6492 **/
6493static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6494{
6495 unsigned long mailbox;
6496 struct ipr_hostrcb *hostrcb;
6497 struct ipr_uc_sdt sdt;
6498 int rc, length;
65f56475 6499 u32 ioasc;
1da177e4
LT		 6500
6501 mailbox = readl(ioa_cfg->ioa_mailbox);
6502
6503 if (!ipr_sdt_is_fmt2(mailbox)) {
6504 ipr_unit_check_no_data(ioa_cfg);
6505 return;
6506 }
6507
6508 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6509 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6510 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6511
6512 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6513 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6514 ipr_unit_check_no_data(ioa_cfg);
6515 return;
6516 }
6517
6518 /* Find length of the first sdt entry (UC buffer) */
6519 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6520 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6521
6522 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6523 struct ipr_hostrcb, queue);
6524 list_del(&hostrcb->queue);
6525 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6526
6527 rc = ipr_get_ldump_data_section(ioa_cfg,
6528 be32_to_cpu(sdt.entry[0].bar_str_offset),
6529 (__be32 *)&hostrcb->hcam,
6530 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6531
65f56475 6532 if (!rc) {
1da177e4 6533 ipr_handle_log_data(ioa_cfg, hostrcb);
65f56475
BK		 6534 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6535 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6536 ioa_cfg->sdt_state == GET_DUMP)
6537 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6538 } else
1da177e4
LT		 6539 ipr_unit_check_no_data(ioa_cfg);
6540
6541 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6542}
6543
6544/**
6545 * ipr_reset_restore_cfg_space - Restore PCI config space.
6546 * @ipr_cmd: ipr command struct
6547 *
6548 * Description: This function restores the saved PCI config space of
6549 * the adapter, fails all outstanding ops back to the callers, and
6550 * fetches the dump/unit check if applicable to this reset.
6551 *
6552 * Return value:
6553 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6554 **/
6555static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6556{
6557 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6558 int rc;
6559
6560 ENTER;
6561 rc = pci_restore_state(ioa_cfg->pdev);
6562
6563 if (rc != PCIBIOS_SUCCESSFUL) {
6564 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6565 return IPR_RC_JOB_CONTINUE;
6566 }
6567
6568 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6569 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6570 return IPR_RC_JOB_CONTINUE;
6571 }
6572
6573 ipr_fail_all_ops(ioa_cfg);
6574
6575 if (ioa_cfg->ioa_unit_checked) {
6576 ioa_cfg->ioa_unit_checked = 0;
6577 ipr_get_unit_check_buffer(ioa_cfg);
6578 ipr_cmd->job_step = ipr_reset_alert;
6579 ipr_reset_start_timer(ipr_cmd, 0);
6580 return IPR_RC_JOB_RETURN;
6581 }
6582
6583 if (ioa_cfg->in_ioa_bringdown) {
6584 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6585 } else {
6586 ipr_cmd->job_step = ipr_reset_enable_ioa;
6587
6588 if (GET_DUMP == ioa_cfg->sdt_state) {
6589 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6590 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6591 schedule_work(&ioa_cfg->work_q);
6592 return IPR_RC_JOB_RETURN;
6593 }
6594 }
6595
6596 ENTER;
6597 return IPR_RC_JOB_CONTINUE;
6598}
6599
e619e1a7
BK		 6600/**
6601 * ipr_reset_bist_done - BIST has completed on the adapter.
6602 * @ipr_cmd: ipr command struct
6603 *
6604 * Description: Unblock config space and resume the reset process.
6605 *
6606 * Return value:
6607 * IPR_RC_JOB_CONTINUE
6608 **/
6609static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6610{
6611 ENTER;
6612 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6613 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6614 LEAVE;
6615 return IPR_RC_JOB_CONTINUE;
6616}
6617
1da177e4
LT		 6618/**
6619 * ipr_reset_start_bist - Run BIST on the adapter.
6620 * @ipr_cmd: ipr command struct
6621 *
6622 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6623 *
6624 * Return value:
6625 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6626 **/
6627static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6628{
6629 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6630 int rc;
6631
6632 ENTER;
b30197d2 6633 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 6634 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6635
6636 if (rc != PCIBIOS_SUCCESSFUL) {
a9aedb09 6637 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
1da177e4
LT		 6638 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6639 rc = IPR_RC_JOB_CONTINUE;
6640 } else {
e619e1a7 6641 ipr_cmd->job_step = ipr_reset_bist_done;
1da177e4
LT		 6642 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6643 rc = IPR_RC_JOB_RETURN;
6644 }
6645
6646 LEAVE;
6647 return rc;
6648}
6649
463fc696
BK		 6650/**
6651 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6652 * @ipr_cmd: ipr command struct
6653 *
6654 * Description: This clears PCI reset to the adapter and delays two seconds.
6655 *
6656 * Return value:
6657 * IPR_RC_JOB_RETURN
6658 **/
6659static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6660{
6661 ENTER;
6662 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6663 ipr_cmd->job_step = ipr_reset_bist_done;
6664 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6665 LEAVE;
6666 return IPR_RC_JOB_RETURN;
6667}
6668
6669/**
6670 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6671 * @ipr_cmd: ipr command struct
6672 *
6673 * Description: This asserts PCI reset to the adapter.
6674 *
6675 * Return value:
6676 * IPR_RC_JOB_RETURN
6677 **/
6678static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6679{
6680 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6681 struct pci_dev *pdev = ioa_cfg->pdev;
6682
6683 ENTER;
6684 pci_block_user_cfg_access(pdev);
6685 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6686 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6687 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6688 LEAVE;
6689 return IPR_RC_JOB_RETURN;
6690}
6691
1da177e4
LT		 6692/**
6693 * ipr_reset_allowed - Query whether or not IOA can be reset
6694 * @ioa_cfg: ioa config struct
6695 *
6696 * Return value:
6697 * 0 if reset not allowed / non-zero if reset is allowed
6698 **/
6699static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6700{
6701 volatile u32 temp_reg;
6702
6703 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6704 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6705}
6706
6707/**
6708 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6709 * @ipr_cmd: ipr command struct
6710 *
6711 * Description: This function waits for adapter permission to run BIST,
6712 * then runs BIST. If the adapter does not give permission after a
6713 * reasonable time, we will reset the adapter anyway. The impact of
6714 * resetting the adapter without warning the adapter is the risk of
6715 * losing the persistent error log on the adapter. If the adapter is
6716 * reset while it is writing to the flash on the adapter, the flash
6717 * segment will have bad ECC and be zeroed.
6718 *
6719 * Return value:
6720 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6721 **/
6722static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6723{
6724 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6725 int rc = IPR_RC_JOB_RETURN;
6726
6727 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6728 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6729 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6730 } else {
463fc696 6731 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6732 rc = IPR_RC_JOB_CONTINUE;
6733 }
6734
6735 return rc;
6736}
6737
6738/**
6739 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6740 * @ipr_cmd: ipr command struct
6741 *
6742 * Description: This function alerts the adapter that it will be reset.
6743 * If memory space is not currently enabled, proceed directly
6744 * to running BIST on the adapter. The timer must always be started
6745 * so we guarantee we do not run BIST from ipr_isr.
6746 *
6747 * Return value:
6748 * IPR_RC_JOB_RETURN
6749 **/
6750static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6751{
6752 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6753 u16 cmd_reg;
6754 int rc;
6755
6756 ENTER;
6757 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6758
6759 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6760 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6761 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6762 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6763 } else {
463fc696 6764 ipr_cmd->job_step = ioa_cfg->reset;
1da177e4
LT		 6765 }
6766
6767 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6768 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6769
6770 LEAVE;
6771 return IPR_RC_JOB_RETURN;
6772}
6773
6774/**
6775 * ipr_reset_ucode_download_done - Microcode download completion
6776 * @ipr_cmd: ipr command struct
6777 *
6778 * Description: This function unmaps the microcode download buffer.
6779 *
6780 * Return value:
6781 * IPR_RC_JOB_CONTINUE
6782 **/
6783static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6784{
6785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6786 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6787
6788 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6789 sglist->num_sg, DMA_TO_DEVICE);
6790
6791 ipr_cmd->job_step = ipr_reset_alert;
6792 return IPR_RC_JOB_CONTINUE;
6793}
6794
6795/**
6796 * ipr_reset_ucode_download - Download microcode to the adapter
6797 * @ipr_cmd: ipr command struct
6798 *
6799 * Description: This function checks to see if it there is microcode
6800 * to download to the adapter. If there is, a download is performed.
6801 *
6802 * Return value:
6803 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6804 **/
6805static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6806{
6807 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6808 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6809
6810 ENTER;
6811 ipr_cmd->job_step = ipr_reset_alert;
6812
6813 if (!sglist)
6814 return IPR_RC_JOB_CONTINUE;
6815
6816 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6817 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6818 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6819 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6820 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6821 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6822 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6823
12baa420 6824 ipr_build_ucode_ioadl(ipr_cmd, sglist);
1da177e4
LT		 6825 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6826
6827 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6828 IPR_WRITE_BUFFER_TIMEOUT);
6829
6830 LEAVE;
6831 return IPR_RC_JOB_RETURN;
6832}
6833
6834/**
6835 * ipr_reset_shutdown_ioa - Shutdown the adapter
6836 * @ipr_cmd: ipr command struct
6837 *
6838 * Description: This function issues an adapter shutdown of the
6839 * specified type to the specified adapter as part of the
6840 * adapter reset job.
6841 *
6842 * Return value:
6843 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6844 **/
6845static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6846{
6847 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6848 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6849 unsigned long timeout;
6850 int rc = IPR_RC_JOB_CONTINUE;
6851
6852 ENTER;
6853 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6854 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6855 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6856 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6857 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6858
ac09c349
BK		 6859 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6860 timeout = IPR_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6861 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6862 timeout = IPR_INTERNAL_TIMEOUT;
ac09c349
BK		 6863 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6864 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
1da177e4 6865 else
ac09c349 6866 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
1da177e4
LT		 6867
6868 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6869
6870 rc = IPR_RC_JOB_RETURN;
6871 ipr_cmd->job_step = ipr_reset_ucode_download;
6872 } else
6873 ipr_cmd->job_step = ipr_reset_alert;
6874
6875 LEAVE;
6876 return rc;
6877}
6878
6879/**
6880 * ipr_reset_ioa_job - Adapter reset job
6881 * @ipr_cmd: ipr command struct
6882 *
6883 * Description: This function is the job router for the adapter reset job.
6884 *
6885 * Return value:
6886 * none
6887 **/
6888static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6889{
6890 u32 rc, ioasc;
1da177e4
LT		 6891 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6892
6893 do {
6894 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6895
6896 if (ioa_cfg->reset_cmd != ipr_cmd) {
6897 /*
6898 * We are doing nested adapter resets and this is
6899 * not the current reset job.
6900 */
6901 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6902 return;
6903 }
6904
6905 if (IPR_IOASC_SENSE_KEY(ioasc)) {
dfed823e
BK		 6906 rc = ipr_cmd->job_step_failed(ipr_cmd);
6907 if (rc == IPR_RC_JOB_RETURN)
6908 return;
1da177e4
LT		 6909 }
6910
6911 ipr_reinit_ipr_cmnd(ipr_cmd);
dfed823e 6912 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
1da177e4
LT		 6913 rc = ipr_cmd->job_step(ipr_cmd);
6914 } while(rc == IPR_RC_JOB_CONTINUE);
6915}
6916
6917/**
6918 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6919 * @ioa_cfg: ioa config struct
6920 * @job_step: first job step of reset job
6921 * @shutdown_type: shutdown type
6922 *
6923 * Description: This function will initiate the reset of the given adapter
6924 * starting at the selected job step.
6925 * If the caller needs to wait on the completion of the reset,
6926 * the caller must sleep on the reset_wait_q.
6927 *
6928 * Return value:
6929 * none
6930 **/
6931static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6932 int (*job_step) (struct ipr_cmnd *),
6933 enum ipr_shutdown_type shutdown_type)
6934{
6935 struct ipr_cmnd *ipr_cmd;
6936
6937 ioa_cfg->in_reset_reload = 1;
6938 ioa_cfg->allow_cmds = 0;
6939 scsi_block_requests(ioa_cfg->host);
6940
6941 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6942 ioa_cfg->reset_cmd = ipr_cmd;
6943 ipr_cmd->job_step = job_step;
6944 ipr_cmd->u.shutdown_type = shutdown_type;
6945
6946 ipr_reset_ioa_job(ipr_cmd);
6947}
6948
6949/**
6950 * ipr_initiate_ioa_reset - Initiate an adapter reset
6951 * @ioa_cfg: ioa config struct
6952 * @shutdown_type: shutdown type
6953 *
6954 * Description: This function will initiate the reset of the given adapter.
6955 * If the caller needs to wait on the completion of the reset,
6956 * the caller must sleep on the reset_wait_q.
6957 *
6958 * Return value:
6959 * none
6960 **/
6961static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6962 enum ipr_shutdown_type shutdown_type)
6963{
6964 if (ioa_cfg->ioa_is_dead)
6965 return;
6966
6967 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6968 ioa_cfg->sdt_state = ABORT_DUMP;
6969
6970 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6971 dev_err(&ioa_cfg->pdev->dev,
6972 "IOA taken offline - error recovery failed\n");
6973
6974 ioa_cfg->reset_retries = 0;
6975 ioa_cfg->ioa_is_dead = 1;
6976
6977 if (ioa_cfg->in_ioa_bringdown) {
6978 ioa_cfg->reset_cmd = NULL;
6979 ioa_cfg->in_reset_reload = 0;
6980 ipr_fail_all_ops(ioa_cfg);
6981 wake_up_all(&ioa_cfg->reset_wait_q);
6982
6983 spin_unlock_irq(ioa_cfg->host->host_lock);
6984 scsi_unblock_requests(ioa_cfg->host);
6985 spin_lock_irq(ioa_cfg->host->host_lock);
6986 return;
6987 } else {
6988 ioa_cfg->in_ioa_bringdown = 1;
6989 shutdown_type = IPR_SHUTDOWN_NONE;
6990 }
6991 }
6992
6993 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6994 shutdown_type);
6995}
6996
f8a88b19
LV		 6997/**
6998 * ipr_reset_freeze - Hold off all I/O activity
6999 * @ipr_cmd: ipr command struct
7000 *
7001 * Description: If the PCI slot is frozen, hold off all I/O
7002 * activity; then, as soon as the slot is available again,
7003 * initiate an adapter reset.
7004 */
7005static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
7006{
7007 /* Disallow new interrupts, avoid loop */
7008 ipr_cmd->ioa_cfg->allow_interrupts = 0;
7009 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
7010 ipr_cmd->done = ipr_reset_ioa_job;
7011 return IPR_RC_JOB_RETURN;
7012}
7013
7014/**
7015 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
7016 * @pdev: PCI device struct
7017 *
7018 * Description: This routine is called to tell us that the PCI bus
7019 * is down. Can't do anything here, except put the device driver
7020 * into a holding pattern, waiting for the PCI bus to come back.
7021 */
7022static void ipr_pci_frozen(struct pci_dev *pdev)
7023{
7024 unsigned long flags = 0;
7025 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7026
7027 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7028 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
7029 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7030}
7031
7032/**
7033 * ipr_pci_slot_reset - Called when PCI slot has been reset.
7034 * @pdev: PCI device struct
7035 *
7036 * Description: This routine is called by the pci error recovery
7037 * code after the PCI slot has been reset, just before we
7038 * should resume normal operations.
7039 */
7040static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
7041{
7042 unsigned long flags = 0;
7043 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7044
7045 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
463fc696
BK		 7046 if (ioa_cfg->needs_warm_reset)
7047 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7048 else
7049 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7050 IPR_SHUTDOWN_NONE);
f8a88b19
LV		 7051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7052 return PCI_ERS_RESULT_RECOVERED;
7053}
7054
7055/**
7056 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7057 * @pdev: PCI device struct
7058 *
7059 * Description: This routine is called when the PCI bus has
7060 * permanently failed.
7061 */
7062static void ipr_pci_perm_failure(struct pci_dev *pdev)
7063{
7064 unsigned long flags = 0;
7065 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7066
7067 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7068 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7069 ioa_cfg->sdt_state = ABORT_DUMP;
7070 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7071 ioa_cfg->in_ioa_bringdown = 1;
7072 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7073 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7074}
7075
7076/**
7077 * ipr_pci_error_detected - Called when a PCI error is detected.
7078 * @pdev: PCI device struct
7079 * @state: PCI channel state
7080 *
7081 * Description: Called when a PCI error is detected.
7082 *
7083 * Return value:
7084 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7085 */
7086static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7087 pci_channel_state_t state)
7088{
7089 switch (state) {
7090 case pci_channel_io_frozen:
7091 ipr_pci_frozen(pdev);
7092 return PCI_ERS_RESULT_NEED_RESET;
7093 case pci_channel_io_perm_failure:
7094 ipr_pci_perm_failure(pdev);
7095 return PCI_ERS_RESULT_DISCONNECT;
7096 break;
7097 default:
7098 break;
7099 }
7100 return PCI_ERS_RESULT_NEED_RESET;
7101}
7102
1da177e4
LT		 7103/**
7104 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7105 * @ioa_cfg: ioa cfg struct
7106 *
7107 * Description: This is the second phase of adapter intialization
7108 * This function takes care of initilizing the adapter to the point
7109 * where it can accept new commands.
7110
7111 * Return value:
7112 * 0 on sucess / -EIO on failure
7113 **/
7114static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7115{
7116 int rc = 0;
7117 unsigned long host_lock_flags = 0;
7118
7119 ENTER;
7120 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7121 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
ce155cce
BK		 7122 if (ioa_cfg->needs_hard_reset) {
7123 ioa_cfg->needs_hard_reset = 0;
7124 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7125 } else
7126 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7127 IPR_SHUTDOWN_NONE);
1da177e4
LT		 7128
7129 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7130 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7131 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7132
7133 if (ioa_cfg->ioa_is_dead) {
7134 rc = -EIO;
7135 } else if (ipr_invalid_adapter(ioa_cfg)) {
7136 if (!ipr_testmode)
7137 rc = -EIO;
7138
7139 dev_err(&ioa_cfg->pdev->dev,
7140 "Adapter not supported in this hardware configuration.\n");
7141 }
7142
7143 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7144
7145 LEAVE;
7146 return rc;
7147}
7148
7149/**
7150 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7151 * @ioa_cfg: ioa config struct
7152 *
7153 * Return value:
7154 * none
7155 **/
7156static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7157{
7158 int i;
7159
7160 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7161 if (ioa_cfg->ipr_cmnd_list[i])
7162 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7163 ioa_cfg->ipr_cmnd_list[i],
7164 ioa_cfg->ipr_cmnd_list_dma[i]);
7165
7166 ioa_cfg->ipr_cmnd_list[i] = NULL;
7167 }
7168
7169 if (ioa_cfg->ipr_cmd_pool)
7170 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7171
7172 ioa_cfg->ipr_cmd_pool = NULL;
7173}
7174
7175/**
7176 * ipr_free_mem - Frees memory allocated for an adapter
7177 * @ioa_cfg: ioa cfg struct
7178 *
7179 * Return value:
7180 * nothing
7181 **/
7182static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7183{
7184 int i;
7185
7186 kfree(ioa_cfg->res_entries);
7187 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7188 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7189 ipr_free_cmd_blks(ioa_cfg);
7190 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7191 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7192 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7193 ioa_cfg->cfg_table,
7194 ioa_cfg->cfg_table_dma);
7195
7196 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7197 pci_free_consistent(ioa_cfg->pdev,
7198 sizeof(struct ipr_hostrcb),
7199 ioa_cfg->hostrcb[i],
7200 ioa_cfg->hostrcb_dma[i]);
7201 }
7202
7203 ipr_free_dump(ioa_cfg);
1da177e4
LT		 7204 kfree(ioa_cfg->trace);
7205}
7206
7207/**
7208 * ipr_free_all_resources - Free all allocated resources for an adapter.
7209 * @ipr_cmd: ipr command struct
7210 *
7211 * This function frees all allocated resources for the
7212 * specified adapter.
7213 *
7214 * Return value:
7215 * none
7216 **/
7217static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7218{
7219 struct pci_dev *pdev = ioa_cfg->pdev;
7220
7221 ENTER;
7222 free_irq(pdev->irq, ioa_cfg);
7223 iounmap(ioa_cfg->hdw_dma_regs);
7224 pci_release_regions(pdev);
7225 ipr_free_mem(ioa_cfg);
7226 scsi_host_put(ioa_cfg->host);
7227 pci_disable_device(pdev);
7228 LEAVE;
7229}
7230
7231/**
7232 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7233 * @ioa_cfg: ioa config struct
7234 *
7235 * Return value:
7236 * 0 on success / -ENOMEM on allocation failure
7237 **/
7238static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7239{
7240 struct ipr_cmnd *ipr_cmd;
7241 struct ipr_ioarcb *ioarcb;
7242 dma_addr_t dma_addr;
7243 int i;
7244
7245 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7246 sizeof(struct ipr_cmnd), 8, 0);
7247
7248 if (!ioa_cfg->ipr_cmd_pool)
7249 return -ENOMEM;
7250
7251 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
e94b1766 7252 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
1da177e4
LT		 7253
7254 if (!ipr_cmd) {
7255 ipr_free_cmd_blks(ioa_cfg);
7256 return -ENOMEM;
7257 }
7258
7259 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7260 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7261 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7262
7263 ioarcb = &ipr_cmd->ioarcb;
7264 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7265 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7266 ioarcb->write_ioadl_addr =
7267 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7268 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7269 ioarcb->ioasa_host_pci_addr =
7270 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7271 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7272 ipr_cmd->cmd_index = i;
7273 ipr_cmd->ioa_cfg = ioa_cfg;
7274 ipr_cmd->sense_buffer_dma = dma_addr +
7275 offsetof(struct ipr_cmnd, sense_buffer);
7276
7277 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7278 }
7279
7280 return 0;
7281}
7282
7283/**
7284 * ipr_alloc_mem - Allocate memory for an adapter
7285 * @ioa_cfg: ioa config struct
7286 *
7287 * Return value:
7288 * 0 on success / non-zero for error
7289 **/
7290static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7291{
7292 struct pci_dev *pdev = ioa_cfg->pdev;
7293 int i, rc = -ENOMEM;
7294
7295 ENTER;
0bc42e35 7296 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
1da177e4
LT		 7297 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7298
7299 if (!ioa_cfg->res_entries)
7300 goto out;
7301
1da177e4
LT		 7302 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7303 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7304
7305 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7306 sizeof(struct ipr_misc_cbs),
7307 &ioa_cfg->vpd_cbs_dma);
7308
7309 if (!ioa_cfg->vpd_cbs)
7310 goto out_free_res_entries;
7311
7312 if (ipr_alloc_cmd_blks(ioa_cfg))
7313 goto out_free_vpd_cbs;
7314
7315 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7316 sizeof(u32) * IPR_NUM_CMD_BLKS,
7317 &ioa_cfg->host_rrq_dma);
7318
7319 if (!ioa_cfg->host_rrq)
7320 goto out_ipr_free_cmd_blocks;
7321
7322 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7323 sizeof(struct ipr_config_table),
7324 &ioa_cfg->cfg_table_dma);
7325
7326 if (!ioa_cfg->cfg_table)
7327 goto out_free_host_rrq;
7328
7329 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7330 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7331 sizeof(struct ipr_hostrcb),
7332 &ioa_cfg->hostrcb_dma[i]);
7333
7334 if (!ioa_cfg->hostrcb[i])
7335 goto out_free_hostrcb_dma;
7336
7337 ioa_cfg->hostrcb[i]->hostrcb_dma =
7338 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
49dc6a18 7339 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
1da177e4
LT		 7340 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7341 }
7342
0bc42e35 7343 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
1da177e4
LT		 7344 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7345
7346 if (!ioa_cfg->trace)
7347 goto out_free_hostrcb_dma;
7348
1da177e4
LT		 7349 rc = 0;
7350out:
7351 LEAVE;
7352 return rc;
7353
7354out_free_hostrcb_dma:
7355 while (i-- > 0) {
7356 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7357 ioa_cfg->hostrcb[i],
7358 ioa_cfg->hostrcb_dma[i]);
7359 }
7360 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7361 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7362out_free_host_rrq:
7363 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7364 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7365out_ipr_free_cmd_blocks:
7366 ipr_free_cmd_blks(ioa_cfg);
7367out_free_vpd_cbs:
7368 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7369 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7370out_free_res_entries:
7371 kfree(ioa_cfg->res_entries);
7372 goto out;
7373}
7374
7375/**
7376 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7377 * @ioa_cfg: ioa config struct
7378 *
7379 * Return value:
7380 * none
7381 **/
7382static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7383{
7384 int i;
7385
7386 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7387 ioa_cfg->bus_attr[i].bus = i;
7388 ioa_cfg->bus_attr[i].qas_enabled = 0;
7389 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7390 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7391 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7392 else
7393 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7394 }
7395}
7396
7397/**
7398 * ipr_init_ioa_cfg - Initialize IOA config struct
7399 * @ioa_cfg: ioa config struct
7400 * @host: scsi host struct
7401 * @pdev: PCI dev struct
7402 *
7403 * Return value:
7404 * none
7405 **/
7406static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7407 struct Scsi_Host *host, struct pci_dev *pdev)
7408{
7409 const struct ipr_interrupt_offsets *p;
7410 struct ipr_interrupts *t;
7411 void __iomem *base;
7412
7413 ioa_cfg->host = host;
7414 ioa_cfg->pdev = pdev;
7415 ioa_cfg->log_level = ipr_log_level;
3d1d0da6 7416 ioa_cfg->doorbell = IPR_DOORBELL;
1da177e4
LT		 7417 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7418 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7419 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7420 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7421 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7422 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7423 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7424 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7425
7426 INIT_LIST_HEAD(&ioa_cfg->free_q);
7427 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7428 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7429 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7430 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7431 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
c4028958 7432 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
1da177e4
LT		 7433 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7434 ioa_cfg->sdt_state = INACTIVE;
62275040
BK		 7435 if (ipr_enable_cache)
7436 ioa_cfg->cache_state = CACHE_ENABLED;
7437 else
7438 ioa_cfg->cache_state = CACHE_DISABLED;
1da177e4
LT		 7439
7440 ipr_initialize_bus_attr(ioa_cfg);
7441
7442 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7443 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7444 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7445 host->unique_id = host->host_no;
7446 host->max_cmd_len = IPR_MAX_CDB_LEN;
7447 pci_set_drvdata(pdev, ioa_cfg);
7448
7449 p = &ioa_cfg->chip_cfg->regs;
7450 t = &ioa_cfg->regs;
7451 base = ioa_cfg->hdw_dma_regs;
7452
7453 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7454 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7455 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7456 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7457 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7458 t->ioarrin_reg = base + p->ioarrin_reg;
7459 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7460 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7461 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7462}
7463
7464/**
7465 * ipr_get_chip_cfg - Find adapter chip configuration
7466 * @dev_id: PCI device id struct
7467 *
7468 * Return value:
7469 * ptr to chip config on success / NULL on failure
7470 **/
7471static const struct ipr_chip_cfg_t * __devinit
7472ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7473{
7474 int i;
7475
1da177e4
LT		 7476 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7477 if (ipr_chip[i].vendor == dev_id->vendor &&
7478 ipr_chip[i].device == dev_id->device)
7479 return ipr_chip[i].cfg;
7480 return NULL;
7481}
7482
7483/**
7484 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7485 * @pdev: PCI device struct
7486 * @dev_id: PCI device id struct
7487 *
7488 * Return value:
7489 * 0 on success / non-zero on failure
7490 **/
7491static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7492 const struct pci_device_id *dev_id)
7493{
7494 struct ipr_ioa_cfg *ioa_cfg;
7495 struct Scsi_Host *host;
7496 unsigned long ipr_regs_pci;
7497 void __iomem *ipr_regs;
a2a65a3e 7498 int rc = PCIBIOS_SUCCESSFUL;
473b1e8e 7499 volatile u32 mask, uproc, interrupts;
1da177e4
LT		 7500
7501 ENTER;
7502
7503 if ((rc = pci_enable_device(pdev))) {
7504 dev_err(&pdev->dev, "Cannot enable adapter\n");
7505 goto out;
7506 }
7507
7508 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7509
7510 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7511
7512 if (!host) {
7513 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7514 rc = -ENOMEM;
7515 goto out_disable;
7516 }
7517
7518 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7519 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
35a39691
BK		 7520 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7521 sata_port_info.flags, &ipr_sata_ops);
1da177e4
LT		 7522
7523 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7524
7525 if (!ioa_cfg->chip_cfg) {
7526 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7527 dev_id->vendor, dev_id->device);
7528 goto out_scsi_host_put;
7529 }
7530
5469cb5b
BK		 7531 if (ipr_transop_timeout)
7532 ioa_cfg->transop_timeout = ipr_transop_timeout;
7533 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7534 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7535 else
7536 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7537
463fc696
BK		 7538 rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &ioa_cfg->revid);
7539
7540 if (rc != PCIBIOS_SUCCESSFUL) {
7541 dev_err(&pdev->dev, "Failed to read PCI revision ID\n");
7542 rc = -EIO;
7543 goto out_scsi_host_put;
7544 }
7545
1da177e4
LT		 7546 ipr_regs_pci = pci_resource_start(pdev, 0);
7547
7548 rc = pci_request_regions(pdev, IPR_NAME);
7549 if (rc < 0) {
7550 dev_err(&pdev->dev,
7551 "Couldn't register memory range of registers\n");
7552 goto out_scsi_host_put;
7553 }
7554
7555 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7556
7557 if (!ipr_regs) {
7558 dev_err(&pdev->dev,
7559 "Couldn't map memory range of registers\n");
7560 rc = -ENOMEM;
7561 goto out_release_regions;
7562 }
7563
7564 ioa_cfg->hdw_dma_regs = ipr_regs;
7565 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7566 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7567
7568 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7569
7570 pci_set_master(pdev);
7571
7572 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7573 if (rc < 0) {
7574 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7575 goto cleanup_nomem;
7576 }
7577
7578 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7579 ioa_cfg->chip_cfg->cache_line_size);
7580
7581 if (rc != PCIBIOS_SUCCESSFUL) {
7582 dev_err(&pdev->dev, "Write of cache line size failed\n");
7583 rc = -EIO;
7584 goto cleanup_nomem;
7585 }
7586
7587 /* Save away PCI config space for use following IOA reset */
7588 rc = pci_save_state(pdev);
7589
7590 if (rc != PCIBIOS_SUCCESSFUL) {
7591 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7592 rc = -EIO;
7593 goto cleanup_nomem;
7594 }
7595
7596 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7597 goto cleanup_nomem;
7598
7599 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7600 goto cleanup_nomem;
7601
7602 rc = ipr_alloc_mem(ioa_cfg);
7603 if (rc < 0) {
7604 dev_err(&pdev->dev,
7605 "Couldn't allocate enough memory for device driver!\n");
7606 goto cleanup_nomem;
7607 }
7608
ce155cce
BK		 7609 /*
7610 * If HRRQ updated interrupt is not masked, or reset alert is set,
7611 * the card is in an unknown state and needs a hard reset
7612 */
7613 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
473b1e8e 7614 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
ce155cce
BK		 7615 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7616 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7617 ioa_cfg->needs_hard_reset = 1;
473b1e8e
BK		 7618 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7619 ioa_cfg->needs_hard_reset = 1;
7620 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7621 ioa_cfg->ioa_unit_checked = 1;
ce155cce 7622
1da177e4 7623 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
1d6f359a 7624 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
1da177e4
LT		 7625
7626 if (rc) {
7627 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7628 pdev->irq, rc);
7629 goto cleanup_nolog;
7630 }
7631
463fc696
BK		 7632 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7633 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7634 ioa_cfg->needs_warm_reset = 1;
7635 ioa_cfg->reset = ipr_reset_slot_reset;
7636 } else
7637 ioa_cfg->reset = ipr_reset_start_bist;
7638
1da177e4
LT		 7639 spin_lock(&ipr_driver_lock);
7640 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7641 spin_unlock(&ipr_driver_lock);
7642
7643 LEAVE;
7644out:
7645 return rc;
7646
7647cleanup_nolog:
7648 ipr_free_mem(ioa_cfg);
7649cleanup_nomem:
7650 iounmap(ipr_regs);
7651out_release_regions:
7652 pci_release_regions(pdev);
7653out_scsi_host_put:
7654 scsi_host_put(host);
7655out_disable:
7656 pci_disable_device(pdev);
7657 goto out;
7658}
7659
7660/**
7661 * ipr_scan_vsets - Scans for VSET devices
7662 * @ioa_cfg: ioa config struct
7663 *
7664 * Description: Since the VSET resources do not follow SAM in that we can have
7665 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7666 *
7667 * Return value:
7668 * none
7669 **/
7670static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7671{
7672 int target, lun;
7673
7674 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7675 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7676 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7677}
7678
7679/**
7680 * ipr_initiate_ioa_bringdown - Bring down an adapter
7681 * @ioa_cfg: ioa config struct
7682 * @shutdown_type: shutdown type
7683 *
7684 * Description: This function will initiate bringing down the adapter.
7685 * This consists of issuing an IOA shutdown to the adapter
7686 * to flush the cache, and running BIST.
7687 * If the caller needs to wait on the completion of the reset,
7688 * the caller must sleep on the reset_wait_q.
7689 *
7690 * Return value:
7691 * none
7692 **/
7693static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7694 enum ipr_shutdown_type shutdown_type)
7695{
7696 ENTER;
7697 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7698 ioa_cfg->sdt_state = ABORT_DUMP;
7699 ioa_cfg->reset_retries = 0;
7700 ioa_cfg->in_ioa_bringdown = 1;
7701 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7702 LEAVE;
7703}
7704
7705/**
7706 * __ipr_remove - Remove a single adapter
7707 * @pdev: pci device struct
7708 *
7709 * Adapter hot plug remove entry point.
7710 *
7711 * Return value:
7712 * none
7713 **/
7714static void __ipr_remove(struct pci_dev *pdev)
7715{
7716 unsigned long host_lock_flags = 0;
7717 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7718 ENTER;
7719
7720 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
970ea294
BK		 7721 while(ioa_cfg->in_reset_reload) {
7722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7723 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7724 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7725 }
7726
1da177e4
LT		 7727 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7728
7729 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7730 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 7731 flush_scheduled_work();
1da177e4
LT		 7732 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7733
7734 spin_lock(&ipr_driver_lock);
7735 list_del(&ioa_cfg->queue);
7736 spin_unlock(&ipr_driver_lock);
7737
7738 if (ioa_cfg->sdt_state == ABORT_DUMP)
7739 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7740 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7741
7742 ipr_free_all_resources(ioa_cfg);
7743
7744 LEAVE;
7745}
7746
7747/**
7748 * ipr_remove - IOA hot plug remove entry point
7749 * @pdev: pci device struct
7750 *
7751 * Adapter hot plug remove entry point.
7752 *
7753 * Return value:
7754 * none
7755 **/
7756static void ipr_remove(struct pci_dev *pdev)
7757{
7758 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7759
7760 ENTER;
7761
1da177e4
LT		 7762 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7763 &ipr_trace_attr);
7764 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7765 &ipr_dump_attr);
7766 scsi_remove_host(ioa_cfg->host);
7767
7768 __ipr_remove(pdev);
7769
7770 LEAVE;
7771}
7772
7773/**
7774 * ipr_probe - Adapter hot plug add entry point
7775 *
7776 * Return value:
7777 * 0 on success / non-zero on failure
7778 **/
7779static int __devinit ipr_probe(struct pci_dev *pdev,
7780 const struct pci_device_id *dev_id)
7781{
7782 struct ipr_ioa_cfg *ioa_cfg;
7783 int rc;
7784
7785 rc = ipr_probe_ioa(pdev, dev_id);
7786
7787 if (rc)
7788 return rc;
7789
7790 ioa_cfg = pci_get_drvdata(pdev);
7791 rc = ipr_probe_ioa_part2(ioa_cfg);
7792
7793 if (rc) {
7794 __ipr_remove(pdev);
7795 return rc;
7796 }
7797
7798 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7799
7800 if (rc) {
7801 __ipr_remove(pdev);
7802 return rc;
7803 }
7804
7805 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7806 &ipr_trace_attr);
7807
7808 if (rc) {
7809 scsi_remove_host(ioa_cfg->host);
7810 __ipr_remove(pdev);
7811 return rc;
7812 }
7813
7814 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7815 &ipr_dump_attr);
7816
7817 if (rc) {
7818 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7819 &ipr_trace_attr);
7820 scsi_remove_host(ioa_cfg->host);
7821 __ipr_remove(pdev);
7822 return rc;
7823 }
7824
7825 scsi_scan_host(ioa_cfg->host);
7826 ipr_scan_vsets(ioa_cfg);
7827 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7828 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 7829 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 7830 schedule_work(&ioa_cfg->work_q);
7831 return 0;
7832}
7833
7834/**
7835 * ipr_shutdown - Shutdown handler.
d18c3db5 7836 * @pdev: pci device struct
1da177e4
LT		 7837 *
7838 * This function is invoked upon system shutdown/reboot. It will issue
7839 * an adapter shutdown to the adapter to flush the write cache.
7840 *
7841 * Return value:
7842 * none
7843 **/
d18c3db5 7844static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 7845{
d18c3db5 7846 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 7847 unsigned long lock_flags = 0;
7848
7849 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
970ea294
BK		 7850 while(ioa_cfg->in_reset_reload) {
7851 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7852 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7853 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7854 }
7855
1da177e4
LT		 7856 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7857 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7858 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7859}
7860
7861static struct pci_device_id ipr_pci_table[] __devinitdata = {
7862 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7863 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
1da177e4 7864 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7865 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
1da177e4 7866 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7867 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
1da177e4 7868 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6d84c944 7869 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
1da177e4 7870 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7871 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
1da177e4 7872 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7873 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
1da177e4 7874 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6d84c944 7875 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
86f51436 7876 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
5469cb5b
BK		 7877 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7878 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7879 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6d84c944 7880 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7881 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
22d2e402
BK		 7882 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7883 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7884 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
5469cb5b
BK		 7885 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7886 IPR_USE_LONG_TRANSOP_TIMEOUT },
86f51436 7887 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6d84c944 7888 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
86f51436 7889 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
22d2e402
BK		 7890 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7891 IPR_USE_LONG_TRANSOP_TIMEOUT},
60e7486b 7892 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
5469cb5b
BK		 7893 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7894 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c 7895 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
22d2e402
BK		 7896 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7897 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7898 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7899 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7900 IPR_USE_LONG_TRANSOP_TIMEOUT },
7901 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7902 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
60e7486b 7903 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
5469cb5b 7904 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
463fc696 7905 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
1da177e4 7906 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6d84c944 7907 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
1da177e4 7908 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6d84c944 7909 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
86f51436 7910 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7911 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7912 IPR_USE_LONG_TRANSOP_TIMEOUT },
60e7486b 7913 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
5469cb5b
BK		 7914 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7915 IPR_USE_LONG_TRANSOP_TIMEOUT },
185eb31c
BK		 7916 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7917 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7918 IPR_USE_LONG_TRANSOP_TIMEOUT },
1da177e4
LT		 7919 { }
7920};
7921MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7922
f8a88b19
LV		 7923static struct pci_error_handlers ipr_err_handler = {
7924 .error_detected = ipr_pci_error_detected,
7925 .slot_reset = ipr_pci_slot_reset,
7926};
7927
1da177e4
LT		 7928static struct pci_driver ipr_driver = {
7929 .name = IPR_NAME,
7930 .id_table = ipr_pci_table,
7931 .probe = ipr_probe,
7932 .remove = ipr_remove,
d18c3db5 7933 .shutdown = ipr_shutdown,
f8a88b19 7934 .err_handler = &ipr_err_handler,
68c96e59 7935 .dynids.use_driver_data = 1
1da177e4
LT		 7936};
7937
7938/**
7939 * ipr_init - Module entry point
7940 *
7941 * Return value:
7942 * 0 on success / negative value on failure
7943 **/
7944static int __init ipr_init(void)
7945{
7946 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7947 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7948
dcbccbde 7949 return pci_register_driver(&ipr_driver);
1da177e4
LT		 7950}
7951
7952/**
7953 * ipr_exit - Module unload
7954 *
7955 * Module unload entry point.
7956 *
7957 * Return value:
7958 * none
7959 **/
7960static void __exit ipr_exit(void)
7961{
7962 pci_unregister_driver(&ipr_driver);
7963}
7964
7965module_init(ipr_init);
7966module_exit(ipr_exit);
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