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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Linus Torvalds1da177e2005-04-16 15:20:36 -070057#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>
Brian King35a39692006-09-25 12:39:20 -050073#include <linux/libata.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070074#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>
Brian King35a39692006-09-25 12:39:20 -050082#include <scsi/scsi_transport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
brking@us.ibm.com62275042005-11-01 17:01:14 -060094static unsigned int ipr_enable_cache = 1;
brking@us.ibm.comd3c74872005-11-01 17:01:34 -060095static unsigned int ipr_debug = 0;
brking@us.ibm.com32d29772005-11-01 17:02:01 -060096static int ipr_auto_create = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097static DEFINE_SPINLOCK(ipr_driver_lock);
98
99/* This table describes the differences between DMA controller chips */
100static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
brking@us.ibm.com86f51432005-11-01 17:02:42 -0600101 { /* Gemstone, Citrine, and Obsidian */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131};
132
133static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -0600136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 { 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)");
brking@us.ibm.com62275042005-11-01 17:01:14 -0600158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
brking@us.ibm.comd3c74872005-11-01 17:01:34 -0600160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
brking@us.ibm.com32d29772005-11-01 17:02:01 -0600162module_param_named(auto_create, ipr_auto_create, int, 0);
163MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167/* A constant array of IOASCs/URCs/Error Messages */
168static const
169struct ipr_error_table_t ipr_error_table[] = {
170 {0x00000000, 1, 1,
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"},
178 {0x01080000, 1, 1,
179 "FFFE: Soft device bus error recovered by the IOA"},
Brian King896bbd22006-08-02 14:57:44 -0500180 {0x01088100, 0, 1,
181 "4101: Soft device bus fabric error"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182 {0x01170600, 0, 1,
183 "FFF9: Device sector reassign successful"},
184 {0x01170900, 0, 1,
185 "FFF7: Media error recovered by device rewrite procedures"},
186 {0x01180200, 0, 1,
187 "7001: IOA sector reassignment successful"},
188 {0x01180500, 0, 1,
189 "FFF9: Soft media error. Sector reassignment recommended"},
190 {0x01180600, 0, 1,
191 "FFF7: Media error recovered by IOA rewrite procedures"},
192 {0x01418000, 0, 1,
193 "FF3D: Soft PCI bus error recovered by the IOA"},
194 {0x01440000, 1, 1,
195 "FFF6: Device hardware error recovered by the IOA"},
196 {0x01448100, 0, 1,
197 "FFF6: Device hardware error recovered by the device"},
198 {0x01448200, 1, 1,
199 "FF3D: Soft IOA error recovered by the IOA"},
200 {0x01448300, 0, 1,
201 "FFFA: Undefined device response recovered by the IOA"},
202 {0x014A0000, 1, 1,
203 "FFF6: Device bus error, message or command phase"},
Brian King35a39692006-09-25 12:39:20 -0500204 {0x014A8000, 0, 1,
205 "FFFE: Task Management Function failed"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 {0x015D0000, 0, 1,
207 "FFF6: Failure prediction threshold exceeded"},
208 {0x015D9200, 0, 1,
209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
212 {0x023F0000, 0, 0,
213 "Synchronization required"},
214 {0x024E0000, 0, 0,
215 "No ready, IOA shutdown"},
216 {0x025A0000, 0, 0,
217 "Not ready, IOA has been shutdown"},
218 {0x02670100, 0, 1,
219 "3020: Storage subsystem configuration error"},
220 {0x03110B00, 0, 0,
221 "FFF5: Medium error, data unreadable, recommend reassign"},
222 {0x03110C00, 0, 0,
223 "7000: Medium error, data unreadable, do not reassign"},
224 {0x03310000, 0, 1,
225 "FFF3: Disk media format bad"},
226 {0x04050000, 0, 1,
227 "3002: Addressed device failed to respond to selection"},
228 {0x04080000, 1, 1,
229 "3100: Device bus error"},
230 {0x04080100, 0, 1,
231 "3109: IOA timed out a device command"},
232 {0x04088000, 0, 0,
233 "3120: SCSI bus is not operational"},
Brian King896bbd22006-08-02 14:57:44 -0500234 {0x04088100, 0, 1,
235 "4100: Hard device bus fabric error"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 {0x04118000, 0, 1,
237 "9000: IOA reserved area data check"},
238 {0x04118100, 0, 1,
239 "9001: IOA reserved area invalid data pattern"},
240 {0x04118200, 0, 1,
241 "9002: IOA reserved area LRC error"},
242 {0x04320000, 0, 1,
243 "102E: Out of alternate sectors for disk storage"},
244 {0x04330000, 1, 1,
245 "FFF4: Data transfer underlength error"},
246 {0x04338000, 1, 1,
247 "FFF4: Data transfer overlength error"},
248 {0x043E0100, 0, 1,
249 "3400: Logical unit failure"},
250 {0x04408500, 0, 1,
251 "FFF4: Device microcode is corrupt"},
252 {0x04418000, 1, 1,
253 "8150: PCI bus error"},
254 {0x04430000, 1, 0,
255 "Unsupported device bus message received"},
256 {0x04440000, 1, 1,
257 "FFF4: Disk device problem"},
258 {0x04448200, 1, 1,
259 "8150: Permanent IOA failure"},
260 {0x04448300, 0, 1,
261 "3010: Disk device returned wrong response to IOA"},
262 {0x04448400, 0, 1,
263 "8151: IOA microcode error"},
264 {0x04448500, 0, 0,
265 "Device bus status error"},
266 {0x04448600, 0, 1,
267 "8157: IOA error requiring IOA reset to recover"},
Brian King35a39692006-09-25 12:39:20 -0500268 {0x04448700, 0, 0,
269 "ATA device status error"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 {0x04490000, 0, 0,
271 "Message reject received from the device"},
272 {0x04449200, 0, 1,
273 "8008: A permanent cache battery pack failure occurred"},
274 {0x0444A000, 0, 1,
275 "9090: Disk unit has been modified after the last known status"},
276 {0x0444A200, 0, 1,
277 "9081: IOA detected device error"},
278 {0x0444A300, 0, 1,
279 "9082: IOA detected device error"},
280 {0x044A0000, 1, 1,
281 "3110: Device bus error, message or command phase"},
Brian King35a39692006-09-25 12:39:20 -0500282 {0x044A8000, 1, 1,
283 "3110: SAS Command / Task Management Function failed"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 {0x04670400, 0, 1,
285 "9091: Incorrect hardware configuration change has been detected"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600286 {0x04678000, 0, 1,
287 "9073: Invalid multi-adapter configuration"},
Brian King896bbd22006-08-02 14:57:44 -0500288 {0x04678100, 0, 1,
289 "4010: Incorrect connection between cascaded expanders"},
290 {0x04678200, 0, 1,
291 "4020: Connections exceed IOA design limits"},
292 {0x04678300, 0, 1,
293 "4030: Incorrect multipath connection"},
294 {0x04679000, 0, 1,
295 "4110: Unsupported enclosure function"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 {0x046E0000, 0, 1,
297 "FFF4: Command to logical unit failed"},
298 {0x05240000, 1, 0,
299 "Illegal request, invalid request type or request packet"},
300 {0x05250000, 0, 0,
301 "Illegal request, invalid resource handle"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600302 {0x05258000, 0, 0,
303 "Illegal request, commands not allowed to this device"},
304 {0x05258100, 0, 0,
305 "Illegal request, command not allowed to a secondary adapter"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 {0x05260000, 0, 0,
307 "Illegal request, invalid field in parameter list"},
308 {0x05260100, 0, 0,
309 "Illegal request, parameter not supported"},
310 {0x05260200, 0, 0,
311 "Illegal request, parameter value invalid"},
312 {0x052C0000, 0, 0,
313 "Illegal request, command sequence error"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600314 {0x052C8000, 1, 0,
315 "Illegal request, dual adapter support not enabled"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 {0x06040500, 0, 1,
317 "9031: Array protection temporarily suspended, protection resuming"},
318 {0x06040600, 0, 1,
319 "9040: Array protection temporarily suspended, protection resuming"},
Brian King896bbd22006-08-02 14:57:44 -0500320 {0x06288000, 0, 1,
321 "3140: Device bus not ready to ready transition"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 {0x06290000, 0, 1,
323 "FFFB: SCSI bus was reset"},
324 {0x06290500, 0, 0,
325 "FFFE: SCSI bus transition to single ended"},
326 {0x06290600, 0, 0,
327 "FFFE: SCSI bus transition to LVD"},
328 {0x06298000, 0, 1,
329 "FFFB: SCSI bus was reset by another initiator"},
330 {0x063F0300, 0, 1,
331 "3029: A device replacement has occurred"},
332 {0x064C8000, 0, 1,
333 "9051: IOA cache data exists for a missing or failed device"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600334 {0x064C8100, 0, 1,
335 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 {0x06670100, 0, 1,
337 "9025: Disk unit is not supported at its physical location"},
338 {0x06670600, 0, 1,
339 "3020: IOA detected a SCSI bus configuration error"},
340 {0x06678000, 0, 1,
341 "3150: SCSI bus configuration error"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600342 {0x06678100, 0, 1,
343 "9074: Asymmetric advanced function disk configuration"},
Brian King896bbd22006-08-02 14:57:44 -0500344 {0x06678300, 0, 1,
345 "4040: Incomplete multipath connection between IOA and enclosure"},
346 {0x06678400, 0, 1,
347 "4041: Incomplete multipath connection between enclosure and device"},
348 {0x06678500, 0, 1,
349 "9075: Incomplete multipath connection between IOA and remote IOA"},
350 {0x06678600, 0, 1,
351 "9076: Configuration error, missing remote IOA"},
352 {0x06679100, 0, 1,
353 "4050: Enclosure does not support a required multipath function"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 {0x06690200, 0, 1,
355 "9041: Array protection temporarily suspended"},
356 {0x06698200, 0, 1,
357 "9042: Corrupt array parity detected on specified device"},
358 {0x066B0200, 0, 1,
359 "9030: Array no longer protected due to missing or failed disk unit"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600360 {0x066B8000, 0, 1,
361 "9071: Link operational transition"},
362 {0x066B8100, 0, 1,
363 "9072: Link not operational transition"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 {0x066B8200, 0, 1,
365 "9032: Array exposed but still protected"},
Brian King896bbd22006-08-02 14:57:44 -0500366 {0x066B9100, 0, 1,
367 "4061: Multipath redundancy level got better"},
368 {0x066B9200, 0, 1,
369 "4060: Multipath redundancy level got worse"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 {0x07270000, 0, 0,
371 "Failure due to other device"},
372 {0x07278000, 0, 1,
373 "9008: IOA does not support functions expected by devices"},
374 {0x07278100, 0, 1,
375 "9010: Cache data associated with attached devices cannot be found"},
376 {0x07278200, 0, 1,
377 "9011: Cache data belongs to devices other than those attached"},
378 {0x07278400, 0, 1,
379 "9020: Array missing 2 or more devices with only 1 device present"},
380 {0x07278500, 0, 1,
381 "9021: Array missing 2 or more devices with 2 or more devices present"},
382 {0x07278600, 0, 1,
383 "9022: Exposed array is missing a required device"},
384 {0x07278700, 0, 1,
385 "9023: Array member(s) not at required physical locations"},
386 {0x07278800, 0, 1,
387 "9024: Array not functional due to present hardware configuration"},
388 {0x07278900, 0, 1,
389 "9026: Array not functional due to present hardware configuration"},
390 {0x07278A00, 0, 1,
391 "9027: Array is missing a device and parity is out of sync"},
392 {0x07278B00, 0, 1,
393 "9028: Maximum number of arrays already exist"},
394 {0x07278C00, 0, 1,
395 "9050: Required cache data cannot be located for a disk unit"},
396 {0x07278D00, 0, 1,
397 "9052: Cache data exists for a device that has been modified"},
398 {0x07278F00, 0, 1,
399 "9054: IOA resources not available due to previous problems"},
400 {0x07279100, 0, 1,
401 "9092: Disk unit requires initialization before use"},
402 {0x07279200, 0, 1,
403 "9029: Incorrect hardware configuration change has been detected"},
404 {0x07279600, 0, 1,
405 "9060: One or more disk pairs are missing from an array"},
406 {0x07279700, 0, 1,
407 "9061: One or more disks are missing from an array"},
408 {0x07279800, 0, 1,
409 "9062: One or more disks are missing from an array"},
410 {0x07279900, 0, 1,
411 "9063: Maximum number of functional arrays has been exceeded"},
412 {0x0B260000, 0, 0,
413 "Aborted command, invalid descriptor"},
414 {0x0B5A0000, 0, 0,
415 "Command terminated by host"}
416};
417
418static const struct ipr_ses_table_entry ipr_ses_table[] = {
419 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
420 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
421 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
422 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
423 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
424 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
425 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
426 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
427 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
429 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
431 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
432};
433
434/*
435 * Function Prototypes
436 */
437static int ipr_reset_alert(struct ipr_cmnd *);
438static void ipr_process_ccn(struct ipr_cmnd *);
439static void ipr_process_error(struct ipr_cmnd *);
440static void ipr_reset_ioa_job(struct ipr_cmnd *);
441static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
442 enum ipr_shutdown_type);
443
444#ifdef CONFIG_SCSI_IPR_TRACE
445/**
446 * ipr_trc_hook - Add a trace entry to the driver trace
447 * @ipr_cmd: ipr command struct
448 * @type: trace type
449 * @add_data: additional data
450 *
451 * Return value:
452 * none
453 **/
454static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
455 u8 type, u32 add_data)
456{
457 struct ipr_trace_entry *trace_entry;
458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
459
460 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
461 trace_entry->time = jiffies;
462 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
463 trace_entry->type = type;
Brian King35a39692006-09-25 12:39:20 -0500464 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
465 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
467 trace_entry->u.add_data = add_data;
468}
469#else
470#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
471#endif
472
473/**
474 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
475 * @ipr_cmd: ipr command struct
476 *
477 * Return value:
478 * none
479 **/
480static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
481{
482 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
483 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
484
485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
486 ioarcb->write_data_transfer_length = 0;
487 ioarcb->read_data_transfer_length = 0;
488 ioarcb->write_ioadl_len = 0;
489 ioarcb->read_ioadl_len = 0;
490 ioasa->ioasc = 0;
491 ioasa->residual_data_len = 0;
Brian King35a39692006-09-25 12:39:20 -0500492 ioasa->u.gata.status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700493
494 ipr_cmd->scsi_cmd = NULL;
Brian King35a39692006-09-25 12:39:20 -0500495 ipr_cmd->qc = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496 ipr_cmd->sense_buffer[0] = 0;
497 ipr_cmd->dma_use_sg = 0;
498}
499
500/**
501 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
502 * @ipr_cmd: ipr command struct
503 *
504 * Return value:
505 * none
506 **/
507static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
508{
509 ipr_reinit_ipr_cmnd(ipr_cmd);
510 ipr_cmd->u.scratch = 0;
511 ipr_cmd->sibling = NULL;
512 init_timer(&ipr_cmd->timer);
513}
514
515/**
516 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
517 * @ioa_cfg: ioa config struct
518 *
519 * Return value:
520 * pointer to ipr command struct
521 **/
522static
523struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
524{
525 struct ipr_cmnd *ipr_cmd;
526
527 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
528 list_del(&ipr_cmd->queue);
529 ipr_init_ipr_cmnd(ipr_cmd);
530
531 return ipr_cmd;
532}
533
534/**
535 * ipr_unmap_sglist - Unmap scatterlist if mapped
536 * @ioa_cfg: ioa config struct
537 * @ipr_cmd: ipr command struct
538 *
539 * Return value:
540 * nothing
541 **/
542static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
543 struct ipr_cmnd *ipr_cmd)
544{
545 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
546
547 if (ipr_cmd->dma_use_sg) {
548 if (scsi_cmd->use_sg > 0) {
549 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
550 scsi_cmd->use_sg,
551 scsi_cmd->sc_data_direction);
552 } else {
553 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
554 scsi_cmd->request_bufflen,
555 scsi_cmd->sc_data_direction);
556 }
557 }
558}
559
560/**
561 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
562 * @ioa_cfg: ioa config struct
563 * @clr_ints: interrupts to clear
564 *
565 * This function masks all interrupts on the adapter, then clears the
566 * interrupts specified in the mask
567 *
568 * Return value:
569 * none
570 **/
571static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
572 u32 clr_ints)
573{
574 volatile u32 int_reg;
575
576 /* Stop new interrupts */
577 ioa_cfg->allow_interrupts = 0;
578
579 /* Set interrupt mask to stop all new interrupts */
580 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
581
582 /* Clear any pending interrupts */
583 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
584 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
585}
586
587/**
588 * ipr_save_pcix_cmd_reg - Save PCI-X command register
589 * @ioa_cfg: ioa config struct
590 *
591 * Return value:
592 * 0 on success / -EIO on failure
593 **/
594static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
595{
596 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
597
598 if (pcix_cmd_reg == 0) {
599 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
600 return -EIO;
601 }
602
603 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
604 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
605 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
606 return -EIO;
607 }
608
609 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
610 return 0;
611}
612
613/**
614 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
615 * @ioa_cfg: ioa config struct
616 *
617 * Return value:
618 * 0 on success / -EIO on failure
619 **/
620static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
621{
622 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
623
624 if (pcix_cmd_reg) {
625 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
626 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
627 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
628 return -EIO;
629 }
630 } else {
631 dev_err(&ioa_cfg->pdev->dev,
632 "Failed to setup PCI-X command register\n");
633 return -EIO;
634 }
635
636 return 0;
637}
638
639/**
Brian King35a39692006-09-25 12:39:20 -0500640 * ipr_sata_eh_done - done function for aborted SATA commands
641 * @ipr_cmd: ipr command struct
642 *
643 * This function is invoked for ops generated to SATA
644 * devices which are being aborted.
645 *
646 * Return value:
647 * none
648 **/
649static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
650{
651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
652 struct ata_queued_cmd *qc = ipr_cmd->qc;
653 struct ipr_sata_port *sata_port = qc->ap->private_data;
654
655 qc->err_mask |= AC_ERR_OTHER;
656 sata_port->ioasa.status |= ATA_BUSY;
657 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
658 ata_qc_complete(qc);
659}
660
661/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 * ipr_scsi_eh_done - mid-layer done function for aborted ops
663 * @ipr_cmd: ipr command struct
664 *
665 * This function is invoked by the interrupt handler for
666 * ops generated by the SCSI mid-layer which are being aborted.
667 *
668 * Return value:
669 * none
670 **/
671static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
672{
673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
674 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
675
676 scsi_cmd->result |= (DID_ERROR << 16);
677
678 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
679 scsi_cmd->scsi_done(scsi_cmd);
680 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
681}
682
683/**
684 * ipr_fail_all_ops - Fails all outstanding ops.
685 * @ioa_cfg: ioa config struct
686 *
687 * This function fails all outstanding ops.
688 *
689 * Return value:
690 * none
691 **/
692static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
693{
694 struct ipr_cmnd *ipr_cmd, *temp;
695
696 ENTER;
697 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
698 list_del(&ipr_cmd->queue);
699
700 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
701 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
702
703 if (ipr_cmd->scsi_cmd)
704 ipr_cmd->done = ipr_scsi_eh_done;
Brian King35a39692006-09-25 12:39:20 -0500705 else if (ipr_cmd->qc)
706 ipr_cmd->done = ipr_sata_eh_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707
708 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
709 del_timer(&ipr_cmd->timer);
710 ipr_cmd->done(ipr_cmd);
711 }
712
713 LEAVE;
714}
715
716/**
717 * ipr_do_req - Send driver initiated requests.
718 * @ipr_cmd: ipr command struct
719 * @done: done function
720 * @timeout_func: timeout function
721 * @timeout: timeout value
722 *
723 * This function sends the specified command to the adapter with the
724 * timeout given. The done function is invoked on command completion.
725 *
726 * Return value:
727 * none
728 **/
729static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
730 void (*done) (struct ipr_cmnd *),
731 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
732{
733 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
734
735 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
736
737 ipr_cmd->done = done;
738
739 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
740 ipr_cmd->timer.expires = jiffies + timeout;
741 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
742
743 add_timer(&ipr_cmd->timer);
744
745 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
746
747 mb();
748 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
749 ioa_cfg->regs.ioarrin_reg);
750}
751
752/**
753 * ipr_internal_cmd_done - Op done function for an internally generated op.
754 * @ipr_cmd: ipr command struct
755 *
756 * This function is the op done function for an internally generated,
757 * blocking op. It simply wakes the sleeping thread.
758 *
759 * Return value:
760 * none
761 **/
762static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
763{
764 if (ipr_cmd->sibling)
765 ipr_cmd->sibling = NULL;
766 else
767 complete(&ipr_cmd->completion);
768}
769
770/**
771 * ipr_send_blocking_cmd - Send command and sleep on its completion.
772 * @ipr_cmd: ipr command struct
773 * @timeout_func: function to invoke if command times out
774 * @timeout: timeout
775 *
776 * Return value:
777 * none
778 **/
779static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
780 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
781 u32 timeout)
782{
783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
784
785 init_completion(&ipr_cmd->completion);
786 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
787
788 spin_unlock_irq(ioa_cfg->host->host_lock);
789 wait_for_completion(&ipr_cmd->completion);
790 spin_lock_irq(ioa_cfg->host->host_lock);
791}
792
793/**
794 * ipr_send_hcam - Send an HCAM to the adapter.
795 * @ioa_cfg: ioa config struct
796 * @type: HCAM type
797 * @hostrcb: hostrcb struct
798 *
799 * This function will send a Host Controlled Async command to the adapter.
800 * If HCAMs are currently not allowed to be issued to the adapter, it will
801 * place the hostrcb on the free queue.
802 *
803 * Return value:
804 * none
805 **/
806static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
807 struct ipr_hostrcb *hostrcb)
808{
809 struct ipr_cmnd *ipr_cmd;
810 struct ipr_ioarcb *ioarcb;
811
812 if (ioa_cfg->allow_cmds) {
813 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
814 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
815 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
816
817 ipr_cmd->u.hostrcb = hostrcb;
818 ioarcb = &ipr_cmd->ioarcb;
819
820 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
821 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
822 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
823 ioarcb->cmd_pkt.cdb[1] = type;
824 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
825 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
826
827 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
828 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
829 ipr_cmd->ioadl[0].flags_and_data_len =
830 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
831 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
832
833 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
834 ipr_cmd->done = ipr_process_ccn;
835 else
836 ipr_cmd->done = ipr_process_error;
837
838 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
839
840 mb();
841 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
842 ioa_cfg->regs.ioarrin_reg);
843 } else {
844 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
845 }
846}
847
848/**
849 * ipr_init_res_entry - Initialize a resource entry struct.
850 * @res: resource entry struct
851 *
852 * Return value:
853 * none
854 **/
855static void ipr_init_res_entry(struct ipr_resource_entry *res)
856{
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -0600857 res->needs_sync_complete = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 res->in_erp = 0;
859 res->add_to_ml = 0;
860 res->del_from_ml = 0;
861 res->resetting_device = 0;
862 res->sdev = NULL;
Brian King35a39692006-09-25 12:39:20 -0500863 res->sata_port = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864}
865
866/**
867 * ipr_handle_config_change - Handle a config change from the adapter
868 * @ioa_cfg: ioa config struct
869 * @hostrcb: hostrcb
870 *
871 * Return value:
872 * none
873 **/
874static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
875 struct ipr_hostrcb *hostrcb)
876{
877 struct ipr_resource_entry *res = NULL;
878 struct ipr_config_table_entry *cfgte;
879 u32 is_ndn = 1;
880
881 cfgte = &hostrcb->hcam.u.ccn.cfgte;
882
883 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
884 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
885 sizeof(cfgte->res_addr))) {
886 is_ndn = 0;
887 break;
888 }
889 }
890
891 if (is_ndn) {
892 if (list_empty(&ioa_cfg->free_res_q)) {
893 ipr_send_hcam(ioa_cfg,
894 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
895 hostrcb);
896 return;
897 }
898
899 res = list_entry(ioa_cfg->free_res_q.next,
900 struct ipr_resource_entry, queue);
901
902 list_del(&res->queue);
903 ipr_init_res_entry(res);
904 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
905 }
906
907 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
908
909 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
910 if (res->sdev) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 res->del_from_ml = 1;
Brian King1121b792006-03-29 09:37:16 -0600912 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 if (ioa_cfg->allow_ml_add_del)
914 schedule_work(&ioa_cfg->work_q);
915 } else
916 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
917 } else if (!res->sdev) {
918 res->add_to_ml = 1;
919 if (ioa_cfg->allow_ml_add_del)
920 schedule_work(&ioa_cfg->work_q);
921 }
922
923 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
924}
925
926/**
927 * ipr_process_ccn - Op done function for a CCN.
928 * @ipr_cmd: ipr command struct
929 *
930 * This function is the op done function for a configuration
931 * change notification host controlled async from the adapter.
932 *
933 * Return value:
934 * none
935 **/
936static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
937{
938 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
939 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
940 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
941
942 list_del(&hostrcb->queue);
943 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
944
945 if (ioasc) {
946 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
947 dev_err(&ioa_cfg->pdev->dev,
948 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
949
950 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
951 } else {
952 ipr_handle_config_change(ioa_cfg, hostrcb);
953 }
954}
955
956/**
957 * ipr_log_vpd - Log the passed VPD to the error log.
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600958 * @vpd: vendor/product id/sn struct
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959 *
960 * Return value:
961 * none
962 **/
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600963static void ipr_log_vpd(struct ipr_vpd *vpd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964{
965 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
966 + IPR_SERIAL_NUM_LEN];
967
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600968 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
969 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 IPR_PROD_ID_LEN);
971 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
972 ipr_err("Vendor/Product ID: %s\n", buffer);
973
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600974 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700975 buffer[IPR_SERIAL_NUM_LEN] = '\0';
976 ipr_err(" Serial Number: %s\n", buffer);
977}
978
979/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -0600980 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
981 * @vpd: vendor/product id/sn/wwn struct
982 *
983 * Return value:
984 * none
985 **/
986static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
987{
988 ipr_log_vpd(&vpd->vpd);
989 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
990 be32_to_cpu(vpd->wwid[1]));
991}
992
993/**
994 * ipr_log_enhanced_cache_error - Log a cache error.
995 * @ioa_cfg: ioa config struct
996 * @hostrcb: hostrcb struct
997 *
998 * Return value:
999 * none
1000 **/
1001static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1002 struct ipr_hostrcb *hostrcb)
1003{
1004 struct ipr_hostrcb_type_12_error *error =
1005 &hostrcb->hcam.u.error.u.type_12_error;
1006
1007 ipr_err("-----Current Configuration-----\n");
1008 ipr_err("Cache Directory Card Information:\n");
1009 ipr_log_ext_vpd(&error->ioa_vpd);
1010 ipr_err("Adapter Card Information:\n");
1011 ipr_log_ext_vpd(&error->cfc_vpd);
1012
1013 ipr_err("-----Expected Configuration-----\n");
1014 ipr_err("Cache Directory Card Information:\n");
1015 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1016 ipr_err("Adapter Card Information:\n");
1017 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1018
1019 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1020 be32_to_cpu(error->ioa_data[0]),
1021 be32_to_cpu(error->ioa_data[1]),
1022 be32_to_cpu(error->ioa_data[2]));
1023}
1024
1025/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026 * ipr_log_cache_error - Log a cache error.
1027 * @ioa_cfg: ioa config struct
1028 * @hostrcb: hostrcb struct
1029 *
1030 * Return value:
1031 * none
1032 **/
1033static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1034 struct ipr_hostrcb *hostrcb)
1035{
1036 struct ipr_hostrcb_type_02_error *error =
1037 &hostrcb->hcam.u.error.u.type_02_error;
1038
1039 ipr_err("-----Current Configuration-----\n");
1040 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001041 ipr_log_vpd(&error->ioa_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001043 ipr_log_vpd(&error->cfc_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044
1045 ipr_err("-----Expected Configuration-----\n");
1046 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001047 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001049 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050
1051 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1052 be32_to_cpu(error->ioa_data[0]),
1053 be32_to_cpu(error->ioa_data[1]),
1054 be32_to_cpu(error->ioa_data[2]));
1055}
1056
1057/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001058 * ipr_log_enhanced_config_error - Log a configuration error.
1059 * @ioa_cfg: ioa config struct
1060 * @hostrcb: hostrcb struct
1061 *
1062 * Return value:
1063 * none
1064 **/
1065static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1066 struct ipr_hostrcb *hostrcb)
1067{
1068 int errors_logged, i;
1069 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1070 struct ipr_hostrcb_type_13_error *error;
1071
1072 error = &hostrcb->hcam.u.error.u.type_13_error;
1073 errors_logged = be32_to_cpu(error->errors_logged);
1074
1075 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1076 be32_to_cpu(error->errors_detected), errors_logged);
1077
1078 dev_entry = error->dev;
1079
1080 for (i = 0; i < errors_logged; i++, dev_entry++) {
1081 ipr_err_separator;
1082
1083 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1084 ipr_log_ext_vpd(&dev_entry->vpd);
1085
1086 ipr_err("-----New Device Information-----\n");
1087 ipr_log_ext_vpd(&dev_entry->new_vpd);
1088
1089 ipr_err("Cache Directory Card Information:\n");
1090 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1091
1092 ipr_err("Adapter Card Information:\n");
1093 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1094 }
1095}
1096
1097/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001098 * ipr_log_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107{
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry *dev_entry;
1110 struct ipr_hostrcb_type_03_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_03_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001118 dev_entry = error->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001124 ipr_log_vpd(&dev_entry->vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001125
1126 ipr_err("-----New Device Information-----\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001127 ipr_log_vpd(&dev_entry->new_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128
1129 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001130 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131
1132 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001133 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134
1135 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1136 be32_to_cpu(dev_entry->ioa_data[0]),
1137 be32_to_cpu(dev_entry->ioa_data[1]),
1138 be32_to_cpu(dev_entry->ioa_data[2]),
1139 be32_to_cpu(dev_entry->ioa_data[3]),
1140 be32_to_cpu(dev_entry->ioa_data[4]));
1141 }
1142}
1143
1144/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001145 * ipr_log_enhanced_array_error - Log an array configuration error.
1146 * @ioa_cfg: ioa config struct
1147 * @hostrcb: hostrcb struct
1148 *
1149 * Return value:
1150 * none
1151 **/
1152static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1153 struct ipr_hostrcb *hostrcb)
1154{
1155 int i, num_entries;
1156 struct ipr_hostrcb_type_14_error *error;
1157 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1158 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1159
1160 error = &hostrcb->hcam.u.error.u.type_14_error;
1161
1162 ipr_err_separator;
1163
1164 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1165 error->protection_level,
1166 ioa_cfg->host->host_no,
1167 error->last_func_vset_res_addr.bus,
1168 error->last_func_vset_res_addr.target,
1169 error->last_func_vset_res_addr.lun);
1170
1171 ipr_err_separator;
1172
1173 array_entry = error->array_member;
1174 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1175 sizeof(error->array_member));
1176
1177 for (i = 0; i < num_entries; i++, array_entry++) {
1178 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1179 continue;
1180
1181 if (be32_to_cpu(error->exposed_mode_adn) == i)
1182 ipr_err("Exposed Array Member %d:\n", i);
1183 else
1184 ipr_err("Array Member %d:\n", i);
1185
1186 ipr_log_ext_vpd(&array_entry->vpd);
1187 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1188 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1189 "Expected Location");
1190
1191 ipr_err_separator;
1192 }
1193}
1194
1195/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 * ipr_log_array_error - Log an array configuration error.
1197 * @ioa_cfg: ioa config struct
1198 * @hostrcb: hostrcb struct
1199 *
1200 * Return value:
1201 * none
1202 **/
1203static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1204 struct ipr_hostrcb *hostrcb)
1205{
1206 int i;
1207 struct ipr_hostrcb_type_04_error *error;
1208 struct ipr_hostrcb_array_data_entry *array_entry;
1209 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1210
1211 error = &hostrcb->hcam.u.error.u.type_04_error;
1212
1213 ipr_err_separator;
1214
1215 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1216 error->protection_level,
1217 ioa_cfg->host->host_no,
1218 error->last_func_vset_res_addr.bus,
1219 error->last_func_vset_res_addr.target,
1220 error->last_func_vset_res_addr.lun);
1221
1222 ipr_err_separator;
1223
1224 array_entry = error->array_member;
1225
1226 for (i = 0; i < 18; i++) {
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001227 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 continue;
1229
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001230 if (be32_to_cpu(error->exposed_mode_adn) == i)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231 ipr_err("Exposed Array Member %d:\n", i);
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001232 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 ipr_err("Array Member %d:\n", i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001235 ipr_log_vpd(&array_entry->vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001237 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1238 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1239 "Expected Location");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240
1241 ipr_err_separator;
1242
1243 if (i == 9)
1244 array_entry = error->array_member2;
1245 else
1246 array_entry++;
1247 }
1248}
1249
1250/**
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001251 * ipr_log_hex_data - Log additional hex IOA error data.
1252 * @data: IOA error data
1253 * @len: data length
1254 *
1255 * Return value:
1256 * none
1257 **/
1258static void ipr_log_hex_data(u32 *data, int len)
1259{
1260 int i;
1261
1262 if (len == 0)
1263 return;
1264
1265 for (i = 0; i < len / 4; i += 4) {
1266 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1267 be32_to_cpu(data[i]),
1268 be32_to_cpu(data[i+1]),
1269 be32_to_cpu(data[i+2]),
1270 be32_to_cpu(data[i+3]));
1271 }
1272}
1273
1274/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001275 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1276 * @ioa_cfg: ioa config struct
1277 * @hostrcb: hostrcb struct
1278 *
1279 * Return value:
1280 * none
1281 **/
1282static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1283 struct ipr_hostrcb *hostrcb)
1284{
1285 struct ipr_hostrcb_type_17_error *error;
1286
1287 error = &hostrcb->hcam.u.error.u.type_17_error;
1288 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1289
1290 ipr_err("%s\n", error->failure_reason);
1291 ipr_err("Remote Adapter VPD:\n");
1292 ipr_log_ext_vpd(&error->vpd);
1293 ipr_log_hex_data(error->data,
1294 be32_to_cpu(hostrcb->hcam.length) -
1295 (offsetof(struct ipr_hostrcb_error, u) +
1296 offsetof(struct ipr_hostrcb_type_17_error, data)));
1297}
1298
1299/**
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001300 * ipr_log_dual_ioa_error - Log a dual adapter error.
1301 * @ioa_cfg: ioa config struct
1302 * @hostrcb: hostrcb struct
1303 *
1304 * Return value:
1305 * none
1306 **/
1307static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1308 struct ipr_hostrcb *hostrcb)
1309{
1310 struct ipr_hostrcb_type_07_error *error;
1311
1312 error = &hostrcb->hcam.u.error.u.type_07_error;
1313 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1314
1315 ipr_err("%s\n", error->failure_reason);
1316 ipr_err("Remote Adapter VPD:\n");
1317 ipr_log_vpd(&error->vpd);
1318 ipr_log_hex_data(error->data,
1319 be32_to_cpu(hostrcb->hcam.length) -
1320 (offsetof(struct ipr_hostrcb_error, u) +
1321 offsetof(struct ipr_hostrcb_type_07_error, data)));
1322}
1323
1324/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 * ipr_log_generic_error - Log an adapter error.
1326 * @ioa_cfg: ioa config struct
1327 * @hostrcb: hostrcb struct
1328 *
1329 * Return value:
1330 * none
1331 **/
1332static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1333 struct ipr_hostrcb *hostrcb)
1334{
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001335 ipr_log_hex_data(hostrcb->hcam.u.raw.data,
1336 be32_to_cpu(hostrcb->hcam.length));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337}
1338
1339/**
1340 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1341 * @ioasc: IOASC
1342 *
1343 * This function will return the index of into the ipr_error_table
1344 * for the specified IOASC. If the IOASC is not in the table,
1345 * 0 will be returned, which points to the entry used for unknown errors.
1346 *
1347 * Return value:
1348 * index into the ipr_error_table
1349 **/
1350static u32 ipr_get_error(u32 ioasc)
1351{
1352 int i;
1353
1354 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
Brian King35a39692006-09-25 12:39:20 -05001355 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001356 return i;
1357
1358 return 0;
1359}
1360
1361/**
1362 * ipr_handle_log_data - Log an adapter error.
1363 * @ioa_cfg: ioa config struct
1364 * @hostrcb: hostrcb struct
1365 *
1366 * This function logs an adapter error to the system.
1367 *
1368 * Return value:
1369 * none
1370 **/
1371static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1372 struct ipr_hostrcb *hostrcb)
1373{
1374 u32 ioasc;
1375 int error_index;
1376
1377 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1378 return;
1379
1380 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1381 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1382
1383 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1384
1385 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1386 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1387 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1388 scsi_report_bus_reset(ioa_cfg->host,
1389 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1390 }
1391
1392 error_index = ipr_get_error(ioasc);
1393
1394 if (!ipr_error_table[error_index].log_hcam)
1395 return;
1396
1397 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
Brian Kingfb3ed3c2006-03-29 09:37:37 -06001398 ipr_ra_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1399 "%s\n", ipr_error_table[error_index].error);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400 } else {
1401 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1402 ipr_error_table[error_index].error);
1403 }
1404
1405 /* Set indication we have logged an error */
1406 ioa_cfg->errors_logged++;
1407
1408 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1409 return;
brking@us.ibm.comcf852032005-11-01 17:00:47 -06001410 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1411 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412
1413 switch (hostrcb->hcam.overlay_id) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414 case IPR_HOST_RCB_OVERLAY_ID_2:
1415 ipr_log_cache_error(ioa_cfg, hostrcb);
1416 break;
1417 case IPR_HOST_RCB_OVERLAY_ID_3:
1418 ipr_log_config_error(ioa_cfg, hostrcb);
1419 break;
1420 case IPR_HOST_RCB_OVERLAY_ID_4:
1421 case IPR_HOST_RCB_OVERLAY_ID_6:
1422 ipr_log_array_error(ioa_cfg, hostrcb);
1423 break;
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001424 case IPR_HOST_RCB_OVERLAY_ID_7:
1425 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1426 break;
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001427 case IPR_HOST_RCB_OVERLAY_ID_12:
1428 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1429 break;
1430 case IPR_HOST_RCB_OVERLAY_ID_13:
1431 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1432 break;
1433 case IPR_HOST_RCB_OVERLAY_ID_14:
1434 case IPR_HOST_RCB_OVERLAY_ID_16:
1435 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1436 break;
1437 case IPR_HOST_RCB_OVERLAY_ID_17:
1438 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1439 break;
brking@us.ibm.comcf852032005-11-01 17:00:47 -06001440 case IPR_HOST_RCB_OVERLAY_ID_1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442 default:
brking@us.ibm.coma9cfca92005-11-01 17:00:41 -06001443 ipr_log_generic_error(ioa_cfg, hostrcb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444 break;
1445 }
1446}
1447
1448/**
1449 * ipr_process_error - Op done function for an adapter error log.
1450 * @ipr_cmd: ipr command struct
1451 *
1452 * This function is the op done function for an error log host
1453 * controlled async from the adapter. It will log the error and
1454 * send the HCAM back to the adapter.
1455 *
1456 * Return value:
1457 * none
1458 **/
1459static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1460{
1461 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1462 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1463 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1464
1465 list_del(&hostrcb->queue);
1466 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1467
1468 if (!ioasc) {
1469 ipr_handle_log_data(ioa_cfg, hostrcb);
1470 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1471 dev_err(&ioa_cfg->pdev->dev,
1472 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1473 }
1474
1475 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1476}
1477
1478/**
1479 * ipr_timeout - An internally generated op has timed out.
1480 * @ipr_cmd: ipr command struct
1481 *
1482 * This function blocks host requests and initiates an
1483 * adapter reset.
1484 *
1485 * Return value:
1486 * none
1487 **/
1488static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1489{
1490 unsigned long lock_flags = 0;
1491 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1492
1493 ENTER;
1494 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1495
1496 ioa_cfg->errors_logged++;
1497 dev_err(&ioa_cfg->pdev->dev,
1498 "Adapter being reset due to command timeout.\n");
1499
1500 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1501 ioa_cfg->sdt_state = GET_DUMP;
1502
1503 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1504 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1505
1506 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1507 LEAVE;
1508}
1509
1510/**
1511 * ipr_oper_timeout - Adapter timed out transitioning to operational
1512 * @ipr_cmd: ipr command struct
1513 *
1514 * This function blocks host requests and initiates an
1515 * adapter reset.
1516 *
1517 * Return value:
1518 * none
1519 **/
1520static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1521{
1522 unsigned long lock_flags = 0;
1523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1524
1525 ENTER;
1526 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1527
1528 ioa_cfg->errors_logged++;
1529 dev_err(&ioa_cfg->pdev->dev,
1530 "Adapter timed out transitioning to operational.\n");
1531
1532 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1533 ioa_cfg->sdt_state = GET_DUMP;
1534
1535 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1536 if (ipr_fastfail)
1537 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1538 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1539 }
1540
1541 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1542 LEAVE;
1543}
1544
1545/**
1546 * ipr_reset_reload - Reset/Reload the IOA
1547 * @ioa_cfg: ioa config struct
1548 * @shutdown_type: shutdown type
1549 *
1550 * This function resets the adapter and re-initializes it.
1551 * This function assumes that all new host commands have been stopped.
1552 * Return value:
1553 * SUCCESS / FAILED
1554 **/
1555static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1556 enum ipr_shutdown_type shutdown_type)
1557{
1558 if (!ioa_cfg->in_reset_reload)
1559 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1560
1561 spin_unlock_irq(ioa_cfg->host->host_lock);
1562 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1563 spin_lock_irq(ioa_cfg->host->host_lock);
1564
1565 /* If we got hit with a host reset while we were already resetting
1566 the adapter for some reason, and the reset failed. */
1567 if (ioa_cfg->ioa_is_dead) {
1568 ipr_trace;
1569 return FAILED;
1570 }
1571
1572 return SUCCESS;
1573}
1574
1575/**
1576 * ipr_find_ses_entry - Find matching SES in SES table
1577 * @res: resource entry struct of SES
1578 *
1579 * Return value:
1580 * pointer to SES table entry / NULL on failure
1581 **/
1582static const struct ipr_ses_table_entry *
1583ipr_find_ses_entry(struct ipr_resource_entry *res)
1584{
1585 int i, j, matches;
1586 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1587
1588 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1589 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1590 if (ste->compare_product_id_byte[j] == 'X') {
1591 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1592 matches++;
1593 else
1594 break;
1595 } else
1596 matches++;
1597 }
1598
1599 if (matches == IPR_PROD_ID_LEN)
1600 return ste;
1601 }
1602
1603 return NULL;
1604}
1605
1606/**
1607 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1608 * @ioa_cfg: ioa config struct
1609 * @bus: SCSI bus
1610 * @bus_width: bus width
1611 *
1612 * Return value:
1613 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1614 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1615 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1616 * max 160MHz = max 320MB/sec).
1617 **/
1618static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1619{
1620 struct ipr_resource_entry *res;
1621 const struct ipr_ses_table_entry *ste;
1622 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1623
1624 /* Loop through each config table entry in the config table buffer */
1625 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1626 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1627 continue;
1628
1629 if (bus != res->cfgte.res_addr.bus)
1630 continue;
1631
1632 if (!(ste = ipr_find_ses_entry(res)))
1633 continue;
1634
1635 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1636 }
1637
1638 return max_xfer_rate;
1639}
1640
1641/**
1642 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1643 * @ioa_cfg: ioa config struct
1644 * @max_delay: max delay in micro-seconds to wait
1645 *
1646 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1647 *
1648 * Return value:
1649 * 0 on success / other on failure
1650 **/
1651static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1652{
1653 volatile u32 pcii_reg;
1654 int delay = 1;
1655
1656 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1657 while (delay < max_delay) {
1658 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1659
1660 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1661 return 0;
1662
1663 /* udelay cannot be used if delay is more than a few milliseconds */
1664 if ((delay / 1000) > MAX_UDELAY_MS)
1665 mdelay(delay / 1000);
1666 else
1667 udelay(delay);
1668
1669 delay += delay;
1670 }
1671 return -EIO;
1672}
1673
1674/**
1675 * ipr_get_ldump_data_section - Dump IOA memory
1676 * @ioa_cfg: ioa config struct
1677 * @start_addr: adapter address to dump
1678 * @dest: destination kernel buffer
1679 * @length_in_words: length to dump in 4 byte words
1680 *
1681 * Return value:
1682 * 0 on success / -EIO on failure
1683 **/
1684static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1685 u32 start_addr,
1686 __be32 *dest, u32 length_in_words)
1687{
1688 volatile u32 temp_pcii_reg;
1689 int i, delay = 0;
1690
1691 /* Write IOA interrupt reg starting LDUMP state */
1692 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1693 ioa_cfg->regs.set_uproc_interrupt_reg);
1694
1695 /* Wait for IO debug acknowledge */
1696 if (ipr_wait_iodbg_ack(ioa_cfg,
1697 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1698 dev_err(&ioa_cfg->pdev->dev,
1699 "IOA dump long data transfer timeout\n");
1700 return -EIO;
1701 }
1702
1703 /* Signal LDUMP interlocked - clear IO debug ack */
1704 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1705 ioa_cfg->regs.clr_interrupt_reg);
1706
1707 /* Write Mailbox with starting address */
1708 writel(start_addr, ioa_cfg->ioa_mailbox);
1709
1710 /* Signal address valid - clear IOA Reset alert */
1711 writel(IPR_UPROCI_RESET_ALERT,
1712 ioa_cfg->regs.clr_uproc_interrupt_reg);
1713
1714 for (i = 0; i < length_in_words; i++) {
1715 /* Wait for IO debug acknowledge */
1716 if (ipr_wait_iodbg_ack(ioa_cfg,
1717 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1718 dev_err(&ioa_cfg->pdev->dev,
1719 "IOA dump short data transfer timeout\n");
1720 return -EIO;
1721 }
1722
1723 /* Read data from mailbox and increment destination pointer */
1724 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1725 dest++;
1726
1727 /* For all but the last word of data, signal data received */
1728 if (i < (length_in_words - 1)) {
1729 /* Signal dump data received - Clear IO debug Ack */
1730 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1731 ioa_cfg->regs.clr_interrupt_reg);
1732 }
1733 }
1734
1735 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1736 writel(IPR_UPROCI_RESET_ALERT,
1737 ioa_cfg->regs.set_uproc_interrupt_reg);
1738
1739 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1740 ioa_cfg->regs.clr_uproc_interrupt_reg);
1741
1742 /* Signal dump data received - Clear IO debug Ack */
1743 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1744 ioa_cfg->regs.clr_interrupt_reg);
1745
1746 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1747 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1748 temp_pcii_reg =
1749 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1750
1751 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1752 return 0;
1753
1754 udelay(10);
1755 delay += 10;
1756 }
1757
1758 return 0;
1759}
1760
1761#ifdef CONFIG_SCSI_IPR_DUMP
1762/**
1763 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1764 * @ioa_cfg: ioa config struct
1765 * @pci_address: adapter address
1766 * @length: length of data to copy
1767 *
1768 * Copy data from PCI adapter to kernel buffer.
1769 * Note: length MUST be a 4 byte multiple
1770 * Return value:
1771 * 0 on success / other on failure
1772 **/
1773static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1774 unsigned long pci_address, u32 length)
1775{
1776 int bytes_copied = 0;
1777 int cur_len, rc, rem_len, rem_page_len;
1778 __be32 *page;
1779 unsigned long lock_flags = 0;
1780 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1781
1782 while (bytes_copied < length &&
1783 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1784 if (ioa_dump->page_offset >= PAGE_SIZE ||
1785 ioa_dump->page_offset == 0) {
1786 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1787
1788 if (!page) {
1789 ipr_trace;
1790 return bytes_copied;
1791 }
1792
1793 ioa_dump->page_offset = 0;
1794 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1795 ioa_dump->next_page_index++;
1796 } else
1797 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1798
1799 rem_len = length - bytes_copied;
1800 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1801 cur_len = min(rem_len, rem_page_len);
1802
1803 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1804 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1805 rc = -EIO;
1806 } else {
1807 rc = ipr_get_ldump_data_section(ioa_cfg,
1808 pci_address + bytes_copied,
1809 &page[ioa_dump->page_offset / 4],
1810 (cur_len / sizeof(u32)));
1811 }
1812 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1813
1814 if (!rc) {
1815 ioa_dump->page_offset += cur_len;
1816 bytes_copied += cur_len;
1817 } else {
1818 ipr_trace;
1819 break;
1820 }
1821 schedule();
1822 }
1823
1824 return bytes_copied;
1825}
1826
1827/**
1828 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1829 * @hdr: dump entry header struct
1830 *
1831 * Return value:
1832 * nothing
1833 **/
1834static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1835{
1836 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1837 hdr->num_elems = 1;
1838 hdr->offset = sizeof(*hdr);
1839 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1840}
1841
1842/**
1843 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1844 * @ioa_cfg: ioa config struct
1845 * @driver_dump: driver dump struct
1846 *
1847 * Return value:
1848 * nothing
1849 **/
1850static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1851 struct ipr_driver_dump *driver_dump)
1852{
1853 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1854
1855 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1856 driver_dump->ioa_type_entry.hdr.len =
1857 sizeof(struct ipr_dump_ioa_type_entry) -
1858 sizeof(struct ipr_dump_entry_header);
1859 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1860 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1861 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1862 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1863 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1864 ucode_vpd->minor_release[1];
1865 driver_dump->hdr.num_entries++;
1866}
1867
1868/**
1869 * ipr_dump_version_data - Fill in the driver version in the dump.
1870 * @ioa_cfg: ioa config struct
1871 * @driver_dump: driver dump struct
1872 *
1873 * Return value:
1874 * nothing
1875 **/
1876static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1877 struct ipr_driver_dump *driver_dump)
1878{
1879 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1880 driver_dump->version_entry.hdr.len =
1881 sizeof(struct ipr_dump_version_entry) -
1882 sizeof(struct ipr_dump_entry_header);
1883 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1884 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1885 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1886 driver_dump->hdr.num_entries++;
1887}
1888
1889/**
1890 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1891 * @ioa_cfg: ioa config struct
1892 * @driver_dump: driver dump struct
1893 *
1894 * Return value:
1895 * nothing
1896 **/
1897static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1898 struct ipr_driver_dump *driver_dump)
1899{
1900 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1901 driver_dump->trace_entry.hdr.len =
1902 sizeof(struct ipr_dump_trace_entry) -
1903 sizeof(struct ipr_dump_entry_header);
1904 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1905 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1906 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1907 driver_dump->hdr.num_entries++;
1908}
1909
1910/**
1911 * ipr_dump_location_data - Fill in the IOA location in the dump.
1912 * @ioa_cfg: ioa config struct
1913 * @driver_dump: driver dump struct
1914 *
1915 * Return value:
1916 * nothing
1917 **/
1918static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1919 struct ipr_driver_dump *driver_dump)
1920{
1921 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1922 driver_dump->location_entry.hdr.len =
1923 sizeof(struct ipr_dump_location_entry) -
1924 sizeof(struct ipr_dump_entry_header);
1925 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1926 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1927 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1928 driver_dump->hdr.num_entries++;
1929}
1930
1931/**
1932 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1933 * @ioa_cfg: ioa config struct
1934 * @dump: dump struct
1935 *
1936 * Return value:
1937 * nothing
1938 **/
1939static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1940{
1941 unsigned long start_addr, sdt_word;
1942 unsigned long lock_flags = 0;
1943 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1944 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1945 u32 num_entries, start_off, end_off;
1946 u32 bytes_to_copy, bytes_copied, rc;
1947 struct ipr_sdt *sdt;
1948 int i;
1949
1950 ENTER;
1951
1952 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1953
1954 if (ioa_cfg->sdt_state != GET_DUMP) {
1955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1956 return;
1957 }
1958
1959 start_addr = readl(ioa_cfg->ioa_mailbox);
1960
1961 if (!ipr_sdt_is_fmt2(start_addr)) {
1962 dev_err(&ioa_cfg->pdev->dev,
1963 "Invalid dump table format: %lx\n", start_addr);
1964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1965 return;
1966 }
1967
1968 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1969
1970 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1971
1972 /* Initialize the overall dump header */
1973 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1974 driver_dump->hdr.num_entries = 1;
1975 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1976 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1977 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1978 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1979
1980 ipr_dump_version_data(ioa_cfg, driver_dump);
1981 ipr_dump_location_data(ioa_cfg, driver_dump);
1982 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1983 ipr_dump_trace_data(ioa_cfg, driver_dump);
1984
1985 /* Update dump_header */
1986 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1987
1988 /* IOA Dump entry */
1989 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1990 ioa_dump->format = IPR_SDT_FMT2;
1991 ioa_dump->hdr.len = 0;
1992 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1993 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1994
1995 /* First entries in sdt are actually a list of dump addresses and
1996 lengths to gather the real dump data. sdt represents the pointer
1997 to the ioa generated dump table. Dump data will be extracted based
1998 on entries in this table */
1999 sdt = &ioa_dump->sdt;
2000
2001 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2002 sizeof(struct ipr_sdt) / sizeof(__be32));
2003
2004 /* Smart Dump table is ready to use and the first entry is valid */
2005 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2006 dev_err(&ioa_cfg->pdev->dev,
2007 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2008 rc, be32_to_cpu(sdt->hdr.state));
2009 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2010 ioa_cfg->sdt_state = DUMP_OBTAINED;
2011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2012 return;
2013 }
2014
2015 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2016
2017 if (num_entries > IPR_NUM_SDT_ENTRIES)
2018 num_entries = IPR_NUM_SDT_ENTRIES;
2019
2020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2021
2022 for (i = 0; i < num_entries; i++) {
2023 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2024 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2025 break;
2026 }
2027
2028 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2029 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2030 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2031 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2032
2033 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2034 bytes_to_copy = end_off - start_off;
2035 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2036 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2037 continue;
2038 }
2039
2040 /* Copy data from adapter to driver buffers */
2041 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2042 bytes_to_copy);
2043
2044 ioa_dump->hdr.len += bytes_copied;
2045
2046 if (bytes_copied != bytes_to_copy) {
2047 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2048 break;
2049 }
2050 }
2051 }
2052 }
2053
2054 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2055
2056 /* Update dump_header */
2057 driver_dump->hdr.len += ioa_dump->hdr.len;
2058 wmb();
2059 ioa_cfg->sdt_state = DUMP_OBTAINED;
2060 LEAVE;
2061}
2062
2063#else
2064#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2065#endif
2066
2067/**
2068 * ipr_release_dump - Free adapter dump memory
2069 * @kref: kref struct
2070 *
2071 * Return value:
2072 * nothing
2073 **/
2074static void ipr_release_dump(struct kref *kref)
2075{
2076 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2077 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2078 unsigned long lock_flags = 0;
2079 int i;
2080
2081 ENTER;
2082 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2083 ioa_cfg->dump = NULL;
2084 ioa_cfg->sdt_state = INACTIVE;
2085 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2086
2087 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2088 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2089
2090 kfree(dump);
2091 LEAVE;
2092}
2093
2094/**
2095 * ipr_worker_thread - Worker thread
2096 * @data: ioa config struct
2097 *
2098 * Called at task level from a work thread. This function takes care
2099 * of adding and removing device from the mid-layer as configuration
2100 * changes are detected by the adapter.
2101 *
2102 * Return value:
2103 * nothing
2104 **/
2105static void ipr_worker_thread(void *data)
2106{
2107 unsigned long lock_flags;
2108 struct ipr_resource_entry *res;
2109 struct scsi_device *sdev;
2110 struct ipr_dump *dump;
2111 struct ipr_ioa_cfg *ioa_cfg = data;
2112 u8 bus, target, lun;
2113 int did_work;
2114
2115 ENTER;
2116 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2117
2118 if (ioa_cfg->sdt_state == GET_DUMP) {
2119 dump = ioa_cfg->dump;
2120 if (!dump) {
2121 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2122 return;
2123 }
2124 kref_get(&dump->kref);
2125 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2126 ipr_get_ioa_dump(ioa_cfg, dump);
2127 kref_put(&dump->kref, ipr_release_dump);
2128
2129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2130 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2131 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2133 return;
2134 }
2135
2136restart:
2137 do {
2138 did_work = 0;
2139 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2140 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2141 return;
2142 }
2143
2144 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2145 if (res->del_from_ml && res->sdev) {
2146 did_work = 1;
2147 sdev = res->sdev;
2148 if (!scsi_device_get(sdev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002149 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2150 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2151 scsi_remove_device(sdev);
2152 scsi_device_put(sdev);
2153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2154 }
2155 break;
2156 }
2157 }
2158 } while(did_work);
2159
2160 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2161 if (res->add_to_ml) {
2162 bus = res->cfgte.res_addr.bus;
2163 target = res->cfgte.res_addr.target;
2164 lun = res->cfgte.res_addr.lun;
Brian King1121b792006-03-29 09:37:16 -06002165 res->add_to_ml = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002166 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2167 scsi_add_device(ioa_cfg->host, bus, target, lun);
2168 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2169 goto restart;
2170 }
2171 }
2172
2173 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
Kay Sievers312c0042005-11-16 09:00:00 +01002174 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002175 LEAVE;
2176}
2177
2178#ifdef CONFIG_SCSI_IPR_TRACE
2179/**
2180 * ipr_read_trace - Dump the adapter trace
2181 * @kobj: kobject struct
2182 * @buf: buffer
2183 * @off: offset
2184 * @count: buffer size
2185 *
2186 * Return value:
2187 * number of bytes printed to buffer
2188 **/
2189static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2190 loff_t off, size_t count)
2191{
2192 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2193 struct Scsi_Host *shost = class_to_shost(cdev);
2194 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2195 unsigned long lock_flags = 0;
2196 int size = IPR_TRACE_SIZE;
2197 char *src = (char *)ioa_cfg->trace;
2198
2199 if (off > size)
2200 return 0;
2201 if (off + count > size) {
2202 size -= off;
2203 count = size;
2204 }
2205
2206 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2207 memcpy(buf, &src[off], count);
2208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2209 return count;
2210}
2211
2212static struct bin_attribute ipr_trace_attr = {
2213 .attr = {
2214 .name = "trace",
2215 .mode = S_IRUGO,
2216 },
2217 .size = 0,
2218 .read = ipr_read_trace,
2219};
2220#endif
2221
brking@us.ibm.com62275042005-11-01 17:01:14 -06002222static const struct {
2223 enum ipr_cache_state state;
2224 char *name;
2225} cache_state [] = {
2226 { CACHE_NONE, "none" },
2227 { CACHE_DISABLED, "disabled" },
2228 { CACHE_ENABLED, "enabled" }
2229};
2230
2231/**
2232 * ipr_show_write_caching - Show the write caching attribute
2233 * @class_dev: class device struct
2234 * @buf: buffer
2235 *
2236 * Return value:
2237 * number of bytes printed to buffer
2238 **/
2239static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2240{
2241 struct Scsi_Host *shost = class_to_shost(class_dev);
2242 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2243 unsigned long lock_flags = 0;
2244 int i, len = 0;
2245
2246 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2247 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2248 if (cache_state[i].state == ioa_cfg->cache_state) {
2249 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2250 break;
2251 }
2252 }
2253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2254 return len;
2255}
2256
2257
2258/**
2259 * ipr_store_write_caching - Enable/disable adapter write cache
2260 * @class_dev: class_device struct
2261 * @buf: buffer
2262 * @count: buffer size
2263 *
2264 * This function will enable/disable adapter write cache.
2265 *
2266 * Return value:
2267 * count on success / other on failure
2268 **/
2269static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2270 const char *buf, size_t count)
2271{
2272 struct Scsi_Host *shost = class_to_shost(class_dev);
2273 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2274 unsigned long lock_flags = 0;
2275 enum ipr_cache_state new_state = CACHE_INVALID;
2276 int i;
2277
2278 if (!capable(CAP_SYS_ADMIN))
2279 return -EACCES;
2280 if (ioa_cfg->cache_state == CACHE_NONE)
2281 return -EINVAL;
2282
2283 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2284 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2285 new_state = cache_state[i].state;
2286 break;
2287 }
2288 }
2289
2290 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2291 return -EINVAL;
2292
2293 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2294 if (ioa_cfg->cache_state == new_state) {
2295 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2296 return count;
2297 }
2298
2299 ioa_cfg->cache_state = new_state;
2300 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2301 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2302 if (!ioa_cfg->in_reset_reload)
2303 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2305 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2306
2307 return count;
2308}
2309
2310static struct class_device_attribute ipr_ioa_cache_attr = {
2311 .attr = {
2312 .name = "write_cache",
2313 .mode = S_IRUGO | S_IWUSR,
2314 },
2315 .show = ipr_show_write_caching,
2316 .store = ipr_store_write_caching
2317};
2318
Linus Torvalds1da177e2005-04-16 15:20:36 -07002319/**
2320 * ipr_show_fw_version - Show the firmware version
2321 * @class_dev: class device struct
2322 * @buf: buffer
2323 *
2324 * Return value:
2325 * number of bytes printed to buffer
2326 **/
2327static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2328{
2329 struct Scsi_Host *shost = class_to_shost(class_dev);
2330 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2331 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2332 unsigned long lock_flags = 0;
2333 int len;
2334
2335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2336 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2337 ucode_vpd->major_release, ucode_vpd->card_type,
2338 ucode_vpd->minor_release[0],
2339 ucode_vpd->minor_release[1]);
2340 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2341 return len;
2342}
2343
2344static struct class_device_attribute ipr_fw_version_attr = {
2345 .attr = {
2346 .name = "fw_version",
2347 .mode = S_IRUGO,
2348 },
2349 .show = ipr_show_fw_version,
2350};
2351
2352/**
2353 * ipr_show_log_level - Show the adapter's error logging level
2354 * @class_dev: class device struct
2355 * @buf: buffer
2356 *
2357 * Return value:
2358 * number of bytes printed to buffer
2359 **/
2360static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2361{
2362 struct Scsi_Host *shost = class_to_shost(class_dev);
2363 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2364 unsigned long lock_flags = 0;
2365 int len;
2366
2367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2368 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2369 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2370 return len;
2371}
2372
2373/**
2374 * ipr_store_log_level - Change the adapter's error logging level
2375 * @class_dev: class device struct
2376 * @buf: buffer
2377 *
2378 * Return value:
2379 * number of bytes printed to buffer
2380 **/
2381static ssize_t ipr_store_log_level(struct class_device *class_dev,
2382 const char *buf, size_t count)
2383{
2384 struct Scsi_Host *shost = class_to_shost(class_dev);
2385 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2386 unsigned long lock_flags = 0;
2387
2388 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2389 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2390 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2391 return strlen(buf);
2392}
2393
2394static struct class_device_attribute ipr_log_level_attr = {
2395 .attr = {
2396 .name = "log_level",
2397 .mode = S_IRUGO | S_IWUSR,
2398 },
2399 .show = ipr_show_log_level,
2400 .store = ipr_store_log_level
2401};
2402
2403/**
2404 * ipr_store_diagnostics - IOA Diagnostics interface
2405 * @class_dev: class_device struct
2406 * @buf: buffer
2407 * @count: buffer size
2408 *
2409 * This function will reset the adapter and wait a reasonable
2410 * amount of time for any errors that the adapter might log.
2411 *
2412 * Return value:
2413 * count on success / other on failure
2414 **/
2415static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2416 const char *buf, size_t count)
2417{
2418 struct Scsi_Host *shost = class_to_shost(class_dev);
2419 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2420 unsigned long lock_flags = 0;
2421 int rc = count;
2422
2423 if (!capable(CAP_SYS_ADMIN))
2424 return -EACCES;
2425
2426 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2428 ioa_cfg->errors_logged = 0;
2429 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2430
2431 if (ioa_cfg->in_reset_reload) {
2432 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2433 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2434
2435 /* Wait for a second for any errors to be logged */
2436 msleep(1000);
2437 } else {
2438 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2439 return -EIO;
2440 }
2441
2442 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2443 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2444 rc = -EIO;
2445 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2446
2447 return rc;
2448}
2449
2450static struct class_device_attribute ipr_diagnostics_attr = {
2451 .attr = {
2452 .name = "run_diagnostics",
2453 .mode = S_IWUSR,
2454 },
2455 .store = ipr_store_diagnostics
2456};
2457
2458/**
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002459 * ipr_show_adapter_state - Show the adapter's state
2460 * @class_dev: class device struct
2461 * @buf: buffer
2462 *
2463 * Return value:
2464 * number of bytes printed to buffer
2465 **/
2466static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2467{
2468 struct Scsi_Host *shost = class_to_shost(class_dev);
2469 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2470 unsigned long lock_flags = 0;
2471 int len;
2472
2473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2474 if (ioa_cfg->ioa_is_dead)
2475 len = snprintf(buf, PAGE_SIZE, "offline\n");
2476 else
2477 len = snprintf(buf, PAGE_SIZE, "online\n");
2478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2479 return len;
2480}
2481
2482/**
2483 * ipr_store_adapter_state - Change adapter state
2484 * @class_dev: class_device struct
2485 * @buf: buffer
2486 * @count: buffer size
2487 *
2488 * This function will change the adapter's state.
2489 *
2490 * Return value:
2491 * count on success / other on failure
2492 **/
2493static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2494 const char *buf, size_t count)
2495{
2496 struct Scsi_Host *shost = class_to_shost(class_dev);
2497 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2498 unsigned long lock_flags;
2499 int result = count;
2500
2501 if (!capable(CAP_SYS_ADMIN))
2502 return -EACCES;
2503
2504 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2505 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2506 ioa_cfg->ioa_is_dead = 0;
2507 ioa_cfg->reset_retries = 0;
2508 ioa_cfg->in_ioa_bringdown = 0;
2509 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2510 }
2511 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2512 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2513
2514 return result;
2515}
2516
2517static struct class_device_attribute ipr_ioa_state_attr = {
2518 .attr = {
2519 .name = "state",
2520 .mode = S_IRUGO | S_IWUSR,
2521 },
2522 .show = ipr_show_adapter_state,
2523 .store = ipr_store_adapter_state
2524};
2525
2526/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07002527 * ipr_store_reset_adapter - Reset the adapter
2528 * @class_dev: class_device struct
2529 * @buf: buffer
2530 * @count: buffer size
2531 *
2532 * This function will reset the adapter.
2533 *
2534 * Return value:
2535 * count on success / other on failure
2536 **/
2537static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2538 const char *buf, size_t count)
2539{
2540 struct Scsi_Host *shost = class_to_shost(class_dev);
2541 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2542 unsigned long lock_flags;
2543 int result = count;
2544
2545 if (!capable(CAP_SYS_ADMIN))
2546 return -EACCES;
2547
2548 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2549 if (!ioa_cfg->in_reset_reload)
2550 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2552 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2553
2554 return result;
2555}
2556
2557static struct class_device_attribute ipr_ioa_reset_attr = {
2558 .attr = {
2559 .name = "reset_host",
2560 .mode = S_IWUSR,
2561 },
2562 .store = ipr_store_reset_adapter
2563};
2564
2565/**
2566 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2567 * @buf_len: buffer length
2568 *
2569 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2570 * list to use for microcode download
2571 *
2572 * Return value:
2573 * pointer to sglist / NULL on failure
2574 **/
2575static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2576{
2577 int sg_size, order, bsize_elem, num_elem, i, j;
2578 struct ipr_sglist *sglist;
2579 struct scatterlist *scatterlist;
2580 struct page *page;
2581
2582 /* Get the minimum size per scatter/gather element */
2583 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2584
2585 /* Get the actual size per element */
2586 order = get_order(sg_size);
2587
2588 /* Determine the actual number of bytes per element */
2589 bsize_elem = PAGE_SIZE * (1 << order);
2590
2591 /* Determine the actual number of sg entries needed */
2592 if (buf_len % bsize_elem)
2593 num_elem = (buf_len / bsize_elem) + 1;
2594 else
2595 num_elem = buf_len / bsize_elem;
2596
2597 /* Allocate a scatter/gather list for the DMA */
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002598 sglist = kzalloc(sizeof(struct ipr_sglist) +
Linus Torvalds1da177e2005-04-16 15:20:36 -07002599 (sizeof(struct scatterlist) * (num_elem - 1)),
2600 GFP_KERNEL);
2601
2602 if (sglist == NULL) {
2603 ipr_trace;
2604 return NULL;
2605 }
2606
Linus Torvalds1da177e2005-04-16 15:20:36 -07002607 scatterlist = sglist->scatterlist;
2608
2609 sglist->order = order;
2610 sglist->num_sg = num_elem;
2611
2612 /* Allocate a bunch of sg elements */
2613 for (i = 0; i < num_elem; i++) {
2614 page = alloc_pages(GFP_KERNEL, order);
2615 if (!page) {
2616 ipr_trace;
2617
2618 /* Free up what we already allocated */
2619 for (j = i - 1; j >= 0; j--)
2620 __free_pages(scatterlist[j].page, order);
2621 kfree(sglist);
2622 return NULL;
2623 }
2624
2625 scatterlist[i].page = page;
2626 }
2627
2628 return sglist;
2629}
2630
2631/**
2632 * ipr_free_ucode_buffer - Frees a microcode download buffer
2633 * @p_dnld: scatter/gather list pointer
2634 *
2635 * Free a DMA'able ucode download buffer previously allocated with
2636 * ipr_alloc_ucode_buffer
2637 *
2638 * Return value:
2639 * nothing
2640 **/
2641static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2642{
2643 int i;
2644
2645 for (i = 0; i < sglist->num_sg; i++)
2646 __free_pages(sglist->scatterlist[i].page, sglist->order);
2647
2648 kfree(sglist);
2649}
2650
2651/**
2652 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2653 * @sglist: scatter/gather list pointer
2654 * @buffer: buffer pointer
2655 * @len: buffer length
2656 *
2657 * Copy a microcode image from a user buffer into a buffer allocated by
2658 * ipr_alloc_ucode_buffer
2659 *
2660 * Return value:
2661 * 0 on success / other on failure
2662 **/
2663static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2664 u8 *buffer, u32 len)
2665{
2666 int bsize_elem, i, result = 0;
2667 struct scatterlist *scatterlist;
2668 void *kaddr;
2669
2670 /* Determine the actual number of bytes per element */
2671 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2672
2673 scatterlist = sglist->scatterlist;
2674
2675 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2676 kaddr = kmap(scatterlist[i].page);
2677 memcpy(kaddr, buffer, bsize_elem);
2678 kunmap(scatterlist[i].page);
2679
2680 scatterlist[i].length = bsize_elem;
2681
2682 if (result != 0) {
2683 ipr_trace;
2684 return result;
2685 }
2686 }
2687
2688 if (len % bsize_elem) {
2689 kaddr = kmap(scatterlist[i].page);
2690 memcpy(kaddr, buffer, len % bsize_elem);
2691 kunmap(scatterlist[i].page);
2692
2693 scatterlist[i].length = len % bsize_elem;
2694 }
2695
2696 sglist->buffer_len = len;
2697 return result;
2698}
2699
2700/**
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002701 * ipr_build_ucode_ioadl - Build a microcode download IOADL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002702 * @ipr_cmd: ipr command struct
2703 * @sglist: scatter/gather list
Linus Torvalds1da177e2005-04-16 15:20:36 -07002704 *
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002705 * Builds a microcode download IOA data list (IOADL).
Linus Torvalds1da177e2005-04-16 15:20:36 -07002706 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07002707 **/
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002708static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2709 struct ipr_sglist *sglist)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002710{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002711 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2712 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2713 struct scatterlist *scatterlist = sglist->scatterlist;
2714 int i;
2715
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002716 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002717 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002718 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002719 ioarcb->write_ioadl_len =
2720 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2721
2722 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2723 ioadl[i].flags_and_data_len =
2724 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2725 ioadl[i].address =
2726 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2727 }
2728
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002729 ioadl[i-1].flags_and_data_len |=
2730 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2731}
2732
2733/**
2734 * ipr_update_ioa_ucode - Update IOA's microcode
2735 * @ioa_cfg: ioa config struct
2736 * @sglist: scatter/gather list
2737 *
2738 * Initiate an adapter reset to update the IOA's microcode
2739 *
2740 * Return value:
2741 * 0 on success / -EIO on failure
2742 **/
2743static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2744 struct ipr_sglist *sglist)
2745{
2746 unsigned long lock_flags;
2747
2748 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2749
2750 if (ioa_cfg->ucode_sglist) {
2751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2752 dev_err(&ioa_cfg->pdev->dev,
2753 "Microcode download already in progress\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002754 return -EIO;
2755 }
2756
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002757 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2758 sglist->num_sg, DMA_TO_DEVICE);
2759
2760 if (!sglist->num_dma_sg) {
2761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2762 dev_err(&ioa_cfg->pdev->dev,
2763 "Failed to map microcode download buffer!\n");
2764 return -EIO;
2765 }
2766
2767 ioa_cfg->ucode_sglist = sglist;
2768 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2769 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2770 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2771
2772 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2773 ioa_cfg->ucode_sglist = NULL;
2774 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002775 return 0;
2776}
2777
2778/**
2779 * ipr_store_update_fw - Update the firmware on the adapter
2780 * @class_dev: class_device struct
2781 * @buf: buffer
2782 * @count: buffer size
2783 *
2784 * This function will update the firmware on the adapter.
2785 *
2786 * Return value:
2787 * count on success / other on failure
2788 **/
2789static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2790 const char *buf, size_t count)
2791{
2792 struct Scsi_Host *shost = class_to_shost(class_dev);
2793 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2794 struct ipr_ucode_image_header *image_hdr;
2795 const struct firmware *fw_entry;
2796 struct ipr_sglist *sglist;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002797 char fname[100];
2798 char *src;
2799 int len, result, dnld_size;
2800
2801 if (!capable(CAP_SYS_ADMIN))
2802 return -EACCES;
2803
2804 len = snprintf(fname, 99, "%s", buf);
2805 fname[len-1] = '\0';
2806
2807 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2808 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2809 return -EIO;
2810 }
2811
2812 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2813
2814 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2815 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2816 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2817 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2818 release_firmware(fw_entry);
2819 return -EINVAL;
2820 }
2821
2822 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2823 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2824 sglist = ipr_alloc_ucode_buffer(dnld_size);
2825
2826 if (!sglist) {
2827 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2828 release_firmware(fw_entry);
2829 return -ENOMEM;
2830 }
2831
2832 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2833
2834 if (result) {
2835 dev_err(&ioa_cfg->pdev->dev,
2836 "Microcode buffer copy to DMA buffer failed\n");
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002837 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002838 }
2839
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002840 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002841
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002842 if (!result)
2843 result = count;
2844out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002845 ipr_free_ucode_buffer(sglist);
2846 release_firmware(fw_entry);
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002847 return result;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002848}
2849
2850static struct class_device_attribute ipr_update_fw_attr = {
2851 .attr = {
2852 .name = "update_fw",
2853 .mode = S_IWUSR,
2854 },
2855 .store = ipr_store_update_fw
2856};
2857
2858static struct class_device_attribute *ipr_ioa_attrs[] = {
2859 &ipr_fw_version_attr,
2860 &ipr_log_level_attr,
2861 &ipr_diagnostics_attr,
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002862 &ipr_ioa_state_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002863 &ipr_ioa_reset_attr,
2864 &ipr_update_fw_attr,
brking@us.ibm.com62275042005-11-01 17:01:14 -06002865 &ipr_ioa_cache_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002866 NULL,
2867};
2868
2869#ifdef CONFIG_SCSI_IPR_DUMP
2870/**
2871 * ipr_read_dump - Dump the adapter
2872 * @kobj: kobject struct
2873 * @buf: buffer
2874 * @off: offset
2875 * @count: buffer size
2876 *
2877 * Return value:
2878 * number of bytes printed to buffer
2879 **/
2880static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2881 loff_t off, size_t count)
2882{
2883 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2884 struct Scsi_Host *shost = class_to_shost(cdev);
2885 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2886 struct ipr_dump *dump;
2887 unsigned long lock_flags = 0;
2888 char *src;
2889 int len;
2890 size_t rc = count;
2891
2892 if (!capable(CAP_SYS_ADMIN))
2893 return -EACCES;
2894
2895 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2896 dump = ioa_cfg->dump;
2897
2898 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2900 return 0;
2901 }
2902 kref_get(&dump->kref);
2903 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2904
2905 if (off > dump->driver_dump.hdr.len) {
2906 kref_put(&dump->kref, ipr_release_dump);
2907 return 0;
2908 }
2909
2910 if (off + count > dump->driver_dump.hdr.len) {
2911 count = dump->driver_dump.hdr.len - off;
2912 rc = count;
2913 }
2914
2915 if (count && off < sizeof(dump->driver_dump)) {
2916 if (off + count > sizeof(dump->driver_dump))
2917 len = sizeof(dump->driver_dump) - off;
2918 else
2919 len = count;
2920 src = (u8 *)&dump->driver_dump + off;
2921 memcpy(buf, src, len);
2922 buf += len;
2923 off += len;
2924 count -= len;
2925 }
2926
2927 off -= sizeof(dump->driver_dump);
2928
2929 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2930 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2931 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2932 else
2933 len = count;
2934 src = (u8 *)&dump->ioa_dump + off;
2935 memcpy(buf, src, len);
2936 buf += len;
2937 off += len;
2938 count -= len;
2939 }
2940
2941 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2942
2943 while (count) {
2944 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2945 len = PAGE_ALIGN(off) - off;
2946 else
2947 len = count;
2948 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2949 src += off & ~PAGE_MASK;
2950 memcpy(buf, src, len);
2951 buf += len;
2952 off += len;
2953 count -= len;
2954 }
2955
2956 kref_put(&dump->kref, ipr_release_dump);
2957 return rc;
2958}
2959
2960/**
2961 * ipr_alloc_dump - Prepare for adapter dump
2962 * @ioa_cfg: ioa config struct
2963 *
2964 * Return value:
2965 * 0 on success / other on failure
2966 **/
2967static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2968{
2969 struct ipr_dump *dump;
2970 unsigned long lock_flags = 0;
2971
2972 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002973 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002974
2975 if (!dump) {
2976 ipr_err("Dump memory allocation failed\n");
2977 return -ENOMEM;
2978 }
2979
Linus Torvalds1da177e2005-04-16 15:20:36 -07002980 kref_init(&dump->kref);
2981 dump->ioa_cfg = ioa_cfg;
2982
2983 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2984
2985 if (INACTIVE != ioa_cfg->sdt_state) {
2986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2987 kfree(dump);
2988 return 0;
2989 }
2990
2991 ioa_cfg->dump = dump;
2992 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2993 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2994 ioa_cfg->dump_taken = 1;
2995 schedule_work(&ioa_cfg->work_q);
2996 }
2997 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2998
2999 LEAVE;
3000 return 0;
3001}
3002
3003/**
3004 * ipr_free_dump - Free adapter dump memory
3005 * @ioa_cfg: ioa config struct
3006 *
3007 * Return value:
3008 * 0 on success / other on failure
3009 **/
3010static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3011{
3012 struct ipr_dump *dump;
3013 unsigned long lock_flags = 0;
3014
3015 ENTER;
3016
3017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3018 dump = ioa_cfg->dump;
3019 if (!dump) {
3020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3021 return 0;
3022 }
3023
3024 ioa_cfg->dump = NULL;
3025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3026
3027 kref_put(&dump->kref, ipr_release_dump);
3028
3029 LEAVE;
3030 return 0;
3031}
3032
3033/**
3034 * ipr_write_dump - Setup dump state of adapter
3035 * @kobj: kobject struct
3036 * @buf: buffer
3037 * @off: offset
3038 * @count: buffer size
3039 *
3040 * Return value:
3041 * number of bytes printed to buffer
3042 **/
3043static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3044 loff_t off, size_t count)
3045{
3046 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3047 struct Scsi_Host *shost = class_to_shost(cdev);
3048 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3049 int rc;
3050
3051 if (!capable(CAP_SYS_ADMIN))
3052 return -EACCES;
3053
3054 if (buf[0] == '1')
3055 rc = ipr_alloc_dump(ioa_cfg);
3056 else if (buf[0] == '0')
3057 rc = ipr_free_dump(ioa_cfg);
3058 else
3059 return -EINVAL;
3060
3061 if (rc)
3062 return rc;
3063 else
3064 return count;
3065}
3066
3067static struct bin_attribute ipr_dump_attr = {
3068 .attr = {
3069 .name = "dump",
3070 .mode = S_IRUSR | S_IWUSR,
3071 },
3072 .size = 0,
3073 .read = ipr_read_dump,
3074 .write = ipr_write_dump
3075};
3076#else
3077static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3078#endif
3079
3080/**
3081 * ipr_change_queue_depth - Change the device's queue depth
3082 * @sdev: scsi device struct
3083 * @qdepth: depth to set
3084 *
3085 * Return value:
3086 * actual depth set
3087 **/
3088static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3089{
Brian King35a39692006-09-25 12:39:20 -05003090 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3091 struct ipr_resource_entry *res;
3092 unsigned long lock_flags = 0;
3093
3094 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3095 res = (struct ipr_resource_entry *)sdev->hostdata;
3096
3097 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3098 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3099 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3100
Linus Torvalds1da177e2005-04-16 15:20:36 -07003101 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3102 return sdev->queue_depth;
3103}
3104
3105/**
3106 * ipr_change_queue_type - Change the device's queue type
3107 * @dsev: scsi device struct
3108 * @tag_type: type of tags to use
3109 *
3110 * Return value:
3111 * actual queue type set
3112 **/
3113static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3114{
3115 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3116 struct ipr_resource_entry *res;
3117 unsigned long lock_flags = 0;
3118
3119 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3120 res = (struct ipr_resource_entry *)sdev->hostdata;
3121
3122 if (res) {
3123 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3124 /*
3125 * We don't bother quiescing the device here since the
3126 * adapter firmware does it for us.
3127 */
3128 scsi_set_tag_type(sdev, tag_type);
3129
3130 if (tag_type)
3131 scsi_activate_tcq(sdev, sdev->queue_depth);
3132 else
3133 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3134 } else
3135 tag_type = 0;
3136 } else
3137 tag_type = 0;
3138
3139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3140 return tag_type;
3141}
3142
3143/**
3144 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3145 * @dev: device struct
3146 * @buf: buffer
3147 *
3148 * Return value:
3149 * number of bytes printed to buffer
3150 **/
Yani Ioannou10523b32005-05-17 06:43:37 -04003151static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003152{
3153 struct scsi_device *sdev = to_scsi_device(dev);
3154 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3155 struct ipr_resource_entry *res;
3156 unsigned long lock_flags = 0;
3157 ssize_t len = -ENXIO;
3158
3159 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3160 res = (struct ipr_resource_entry *)sdev->hostdata;
3161 if (res)
3162 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3164 return len;
3165}
3166
3167static struct device_attribute ipr_adapter_handle_attr = {
3168 .attr = {
3169 .name = "adapter_handle",
3170 .mode = S_IRUSR,
3171 },
3172 .show = ipr_show_adapter_handle
3173};
3174
3175static struct device_attribute *ipr_dev_attrs[] = {
3176 &ipr_adapter_handle_attr,
3177 NULL,
3178};
3179
3180/**
3181 * ipr_biosparam - Return the HSC mapping
3182 * @sdev: scsi device struct
3183 * @block_device: block device pointer
3184 * @capacity: capacity of the device
3185 * @parm: Array containing returned HSC values.
3186 *
3187 * This function generates the HSC parms that fdisk uses.
3188 * We want to make sure we return something that places partitions
3189 * on 4k boundaries for best performance with the IOA.
3190 *
3191 * Return value:
3192 * 0 on success
3193 **/
3194static int ipr_biosparam(struct scsi_device *sdev,
3195 struct block_device *block_device,
3196 sector_t capacity, int *parm)
3197{
3198 int heads, sectors;
3199 sector_t cylinders;
3200
3201 heads = 128;
3202 sectors = 32;
3203
3204 cylinders = capacity;
3205 sector_div(cylinders, (128 * 32));
3206
3207 /* return result */
3208 parm[0] = heads;
3209 parm[1] = sectors;
3210 parm[2] = cylinders;
3211
3212 return 0;
3213}
3214
3215/**
Brian King35a39692006-09-25 12:39:20 -05003216 * ipr_find_starget - Find target based on bus/target.
3217 * @starget: scsi target struct
3218 *
3219 * Return value:
3220 * resource entry pointer if found / NULL if not found
3221 **/
3222static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3223{
3224 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3225 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3226 struct ipr_resource_entry *res;
3227
3228 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3229 if ((res->cfgte.res_addr.bus == starget->channel) &&
3230 (res->cfgte.res_addr.target == starget->id) &&
3231 (res->cfgte.res_addr.lun == 0)) {
3232 return res;
3233 }
3234 }
3235
3236 return NULL;
3237}
3238
3239static struct ata_port_info sata_port_info;
3240
3241/**
3242 * ipr_target_alloc - Prepare for commands to a SCSI target
3243 * @starget: scsi target struct
3244 *
3245 * If the device is a SATA device, this function allocates an
3246 * ATA port with libata, else it does nothing.
3247 *
3248 * Return value:
3249 * 0 on success / non-0 on failure
3250 **/
3251static int ipr_target_alloc(struct scsi_target *starget)
3252{
3253 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3254 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3255 struct ipr_sata_port *sata_port;
3256 struct ata_port *ap;
3257 struct ipr_resource_entry *res;
3258 unsigned long lock_flags;
3259
3260 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3261 res = ipr_find_starget(starget);
3262 starget->hostdata = NULL;
3263
3264 if (res && ipr_is_gata(res)) {
3265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3266 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3267 if (!sata_port)
3268 return -ENOMEM;
3269
3270 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3271 if (ap) {
3272 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3273 sata_port->ioa_cfg = ioa_cfg;
3274 sata_port->ap = ap;
3275 sata_port->res = res;
3276
3277 res->sata_port = sata_port;
3278 ap->private_data = sata_port;
3279 starget->hostdata = sata_port;
3280 } else {
3281 kfree(sata_port);
3282 return -ENOMEM;
3283 }
3284 }
3285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3286
3287 return 0;
3288}
3289
3290/**
3291 * ipr_target_destroy - Destroy a SCSI target
3292 * @starget: scsi target struct
3293 *
3294 * If the device was a SATA device, this function frees the libata
3295 * ATA port, else it does nothing.
3296 *
3297 **/
3298static void ipr_target_destroy(struct scsi_target *starget)
3299{
3300 struct ipr_sata_port *sata_port = starget->hostdata;
3301
3302 if (sata_port) {
3303 starget->hostdata = NULL;
3304 ata_sas_port_destroy(sata_port->ap);
3305 kfree(sata_port);
3306 }
3307}
3308
3309/**
3310 * ipr_find_sdev - Find device based on bus/target/lun.
3311 * @sdev: scsi device struct
3312 *
3313 * Return value:
3314 * resource entry pointer if found / NULL if not found
3315 **/
3316static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3317{
3318 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3319 struct ipr_resource_entry *res;
3320
3321 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3322 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3323 (res->cfgte.res_addr.target == sdev->id) &&
3324 (res->cfgte.res_addr.lun == sdev->lun))
3325 return res;
3326 }
3327
3328 return NULL;
3329}
3330
3331/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003332 * ipr_slave_destroy - Unconfigure a SCSI device
3333 * @sdev: scsi device struct
3334 *
3335 * Return value:
3336 * nothing
3337 **/
3338static void ipr_slave_destroy(struct scsi_device *sdev)
3339{
3340 struct ipr_resource_entry *res;
3341 struct ipr_ioa_cfg *ioa_cfg;
3342 unsigned long lock_flags = 0;
3343
3344 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3345
3346 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3347 res = (struct ipr_resource_entry *) sdev->hostdata;
3348 if (res) {
Brian King35a39692006-09-25 12:39:20 -05003349 if (res->sata_port)
3350 ata_port_disable(res->sata_port->ap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003351 sdev->hostdata = NULL;
3352 res->sdev = NULL;
Brian King35a39692006-09-25 12:39:20 -05003353 res->sata_port = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003354 }
3355 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3356}
3357
3358/**
3359 * ipr_slave_configure - Configure a SCSI device
3360 * @sdev: scsi device struct
3361 *
3362 * This function configures the specified scsi device.
3363 *
3364 * Return value:
3365 * 0 on success
3366 **/
3367static int ipr_slave_configure(struct scsi_device *sdev)
3368{
3369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3370 struct ipr_resource_entry *res;
3371 unsigned long lock_flags = 0;
3372
3373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3374 res = sdev->hostdata;
3375 if (res) {
3376 if (ipr_is_af_dasd_device(res))
3377 sdev->type = TYPE_RAID;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003378 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003379 sdev->scsi_level = 4;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003380 sdev->no_uld_attach = 1;
3381 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003382 if (ipr_is_vset_device(res)) {
3383 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3384 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3385 }
Brian Kinge4fbf442006-03-29 09:37:22 -06003386 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07003387 sdev->allow_restart = 1;
Brian King35a39692006-09-25 12:39:20 -05003388 if (ipr_is_gata(res) && res->sata_port) {
3389 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3390 ata_sas_slave_configure(sdev, res->sata_port->ap);
3391 } else {
3392 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3393 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003394 }
3395 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3396 return 0;
3397}
3398
3399/**
Brian King35a39692006-09-25 12:39:20 -05003400 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3401 * @sdev: scsi device struct
3402 *
3403 * This function initializes an ATA port so that future commands
3404 * sent through queuecommand will work.
3405 *
3406 * Return value:
3407 * 0 on success
3408 **/
3409static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3410{
3411 struct ipr_sata_port *sata_port = NULL;
3412 int rc = -ENXIO;
3413
3414 ENTER;
3415 if (sdev->sdev_target)
3416 sata_port = sdev->sdev_target->hostdata;
3417 if (sata_port)
3418 rc = ata_sas_port_init(sata_port->ap);
3419 if (rc)
3420 ipr_slave_destroy(sdev);
3421
3422 LEAVE;
3423 return rc;
3424}
3425
3426/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003427 * ipr_slave_alloc - Prepare for commands to a device.
3428 * @sdev: scsi device struct
3429 *
3430 * This function saves a pointer to the resource entry
3431 * in the scsi device struct if the device exists. We
3432 * can then use this pointer in ipr_queuecommand when
3433 * handling new commands.
3434 *
3435 * Return value:
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003436 * 0 on success / -ENXIO if device does not exist
Linus Torvalds1da177e2005-04-16 15:20:36 -07003437 **/
3438static int ipr_slave_alloc(struct scsi_device *sdev)
3439{
3440 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3441 struct ipr_resource_entry *res;
3442 unsigned long lock_flags;
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003443 int rc = -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003444
3445 sdev->hostdata = NULL;
3446
3447 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3448
Brian King35a39692006-09-25 12:39:20 -05003449 res = ipr_find_sdev(sdev);
3450 if (res) {
3451 res->sdev = sdev;
3452 res->add_to_ml = 0;
3453 res->in_erp = 0;
3454 sdev->hostdata = res;
3455 if (!ipr_is_naca_model(res))
3456 res->needs_sync_complete = 1;
3457 rc = 0;
3458 if (ipr_is_gata(res)) {
3459 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3460 return ipr_ata_slave_alloc(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003461 }
3462 }
3463
3464 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3465
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003466 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003467}
3468
3469/**
3470 * ipr_eh_host_reset - Reset the host adapter
3471 * @scsi_cmd: scsi command struct
3472 *
3473 * Return value:
3474 * SUCCESS / FAILED
3475 **/
Jeff Garzik df0ae242005-05-28 07:57:14 -04003476static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003477{
3478 struct ipr_ioa_cfg *ioa_cfg;
3479 int rc;
3480
3481 ENTER;
3482 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3483
3484 dev_err(&ioa_cfg->pdev->dev,
3485 "Adapter being reset as a result of error recovery.\n");
3486
3487 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3488 ioa_cfg->sdt_state = GET_DUMP;
3489
3490 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3491
3492 LEAVE;
3493 return rc;
3494}
3495
Jeff Garzik df0ae242005-05-28 07:57:14 -04003496static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3497{
3498 int rc;
3499
3500 spin_lock_irq(cmd->device->host->host_lock);
3501 rc = __ipr_eh_host_reset(cmd);
3502 spin_unlock_irq(cmd->device->host->host_lock);
3503
3504 return rc;
3505}
3506
Linus Torvalds1da177e2005-04-16 15:20:36 -07003507/**
Brian Kingc6513092006-03-29 09:37:43 -06003508 * ipr_device_reset - Reset the device
3509 * @ioa_cfg: ioa config struct
3510 * @res: resource entry struct
3511 *
3512 * This function issues a device reset to the affected device.
3513 * If the device is a SCSI device, a LUN reset will be sent
3514 * to the device first. If that does not work, a target reset
Brian King35a39692006-09-25 12:39:20 -05003515 * will be sent. If the device is a SATA device, a PHY reset will
3516 * be sent.
Brian Kingc6513092006-03-29 09:37:43 -06003517 *
3518 * Return value:
3519 * 0 on success / non-zero on failure
3520 **/
3521static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3522 struct ipr_resource_entry *res)
3523{
3524 struct ipr_cmnd *ipr_cmd;
3525 struct ipr_ioarcb *ioarcb;
3526 struct ipr_cmd_pkt *cmd_pkt;
Brian King35a39692006-09-25 12:39:20 -05003527 struct ipr_ioarcb_ata_regs *regs;
Brian Kingc6513092006-03-29 09:37:43 -06003528 u32 ioasc;
3529
3530 ENTER;
3531 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3532 ioarcb = &ipr_cmd->ioarcb;
3533 cmd_pkt = &ioarcb->cmd_pkt;
Brian King35a39692006-09-25 12:39:20 -05003534 regs = &ioarcb->add_data.u.regs;
Brian Kingc6513092006-03-29 09:37:43 -06003535
3536 ioarcb->res_handle = res->cfgte.res_handle;
3537 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3538 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
Brian King35a39692006-09-25 12:39:20 -05003539 if (ipr_is_gata(res)) {
3540 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3541 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3542 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3543 }
Brian Kingc6513092006-03-29 09:37:43 -06003544
3545 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3546 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3547 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
Brian King35a39692006-09-25 12:39:20 -05003548 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3549 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3550 sizeof(struct ipr_ioasa_gata));
Brian Kingc6513092006-03-29 09:37:43 -06003551
3552 LEAVE;
3553 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3554}
3555
3556/**
Brian King35a39692006-09-25 12:39:20 -05003557 * ipr_sata_reset - Reset the SATA port
3558 * @ap: SATA port to reset
3559 * @classes: class of the attached device
3560 *
3561 * This function issues a SATA phy reset to the affected ATA port.
3562 *
3563 * Return value:
3564 * 0 on success / non-zero on failure
3565 **/
3566static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3567{
3568 struct ipr_sata_port *sata_port = ap->private_data;
3569 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3570 struct ipr_resource_entry *res;
3571 unsigned long lock_flags = 0;
3572 int rc = -ENXIO;
3573
3574 ENTER;
3575 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
Brian King73d98ff2006-11-21 10:27:58 -06003576 while(ioa_cfg->in_reset_reload) {
3577 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3578 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3579 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3580 }
3581
Brian King35a39692006-09-25 12:39:20 -05003582 res = sata_port->res;
3583 if (res) {
3584 rc = ipr_device_reset(ioa_cfg, res);
3585 switch(res->cfgte.proto) {
3586 case IPR_PROTO_SATA:
3587 case IPR_PROTO_SAS_STP:
3588 *classes = ATA_DEV_ATA;
3589 break;
3590 case IPR_PROTO_SATA_ATAPI:
3591 case IPR_PROTO_SAS_STP_ATAPI:
3592 *classes = ATA_DEV_ATAPI;
3593 break;
3594 default:
3595 *classes = ATA_DEV_UNKNOWN;
3596 break;
3597 };
3598 }
3599
3600 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3601 LEAVE;
3602 return rc;
3603}
3604
3605/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003606 * ipr_eh_dev_reset - Reset the device
3607 * @scsi_cmd: scsi command struct
3608 *
3609 * This function issues a device reset to the affected device.
3610 * A LUN reset will be sent to the device first. If that does
3611 * not work, a target reset will be sent.
3612 *
3613 * Return value:
3614 * SUCCESS / FAILED
3615 **/
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003616static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003617{
3618 struct ipr_cmnd *ipr_cmd;
3619 struct ipr_ioa_cfg *ioa_cfg;
3620 struct ipr_resource_entry *res;
Brian King35a39692006-09-25 12:39:20 -05003621 struct ata_port *ap;
3622 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003623
3624 ENTER;
3625 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3626 res = scsi_cmd->device->hostdata;
3627
brking@us.ibm.comeeb883072005-11-01 17:02:29 -06003628 if (!res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003629 return FAILED;
3630
3631 /*
3632 * If we are currently going through reset/reload, return failed. This will force the
3633 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3634 * reset to complete
3635 */
3636 if (ioa_cfg->in_reset_reload)
3637 return FAILED;
3638 if (ioa_cfg->ioa_is_dead)
3639 return FAILED;
3640
3641 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3642 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3643 if (ipr_cmd->scsi_cmd)
3644 ipr_cmd->done = ipr_scsi_eh_done;
3645 }
3646 }
3647
3648 res->resetting_device = 1;
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003649 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
Brian King35a39692006-09-25 12:39:20 -05003650
3651 if (ipr_is_gata(res) && res->sata_port) {
3652 ap = res->sata_port->ap;
3653 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3654 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3655 spin_lock_irq(scsi_cmd->device->host->host_lock);
3656 } else
3657 rc = ipr_device_reset(ioa_cfg, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003658 res->resetting_device = 0;
3659
Linus Torvalds1da177e2005-04-16 15:20:36 -07003660 LEAVE;
Brian Kingc6513092006-03-29 09:37:43 -06003661 return (rc ? FAILED : SUCCESS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003662}
3663
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003664static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3665{
3666 int rc;
3667
3668 spin_lock_irq(cmd->device->host->host_lock);
3669 rc = __ipr_eh_dev_reset(cmd);
3670 spin_unlock_irq(cmd->device->host->host_lock);
3671
3672 return rc;
3673}
3674
Linus Torvalds1da177e2005-04-16 15:20:36 -07003675/**
3676 * ipr_bus_reset_done - Op done function for bus reset.
3677 * @ipr_cmd: ipr command struct
3678 *
3679 * This function is the op done function for a bus reset
3680 *
3681 * Return value:
3682 * none
3683 **/
3684static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3685{
3686 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3687 struct ipr_resource_entry *res;
3688
3689 ENTER;
3690 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3691 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3692 sizeof(res->cfgte.res_handle))) {
3693 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3694 break;
3695 }
3696 }
3697
3698 /*
3699 * If abort has not completed, indicate the reset has, else call the
3700 * abort's done function to wake the sleeping eh thread
3701 */
3702 if (ipr_cmd->sibling->sibling)
3703 ipr_cmd->sibling->sibling = NULL;
3704 else
3705 ipr_cmd->sibling->done(ipr_cmd->sibling);
3706
3707 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3708 LEAVE;
3709}
3710
3711/**
3712 * ipr_abort_timeout - An abort task has timed out
3713 * @ipr_cmd: ipr command struct
3714 *
3715 * This function handles when an abort task times out. If this
3716 * happens we issue a bus reset since we have resources tied
3717 * up that must be freed before returning to the midlayer.
3718 *
3719 * Return value:
3720 * none
3721 **/
3722static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3723{
3724 struct ipr_cmnd *reset_cmd;
3725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3726 struct ipr_cmd_pkt *cmd_pkt;
3727 unsigned long lock_flags = 0;
3728
3729 ENTER;
3730 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3731 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3732 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3733 return;
3734 }
3735
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003736 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003737 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3738 ipr_cmd->sibling = reset_cmd;
3739 reset_cmd->sibling = ipr_cmd;
3740 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3741 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3742 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3743 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3744 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3745
3746 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3747 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3748 LEAVE;
3749}
3750
3751/**
3752 * ipr_cancel_op - Cancel specified op
3753 * @scsi_cmd: scsi command struct
3754 *
3755 * This function cancels specified op.
3756 *
3757 * Return value:
3758 * SUCCESS / FAILED
3759 **/
3760static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3761{
3762 struct ipr_cmnd *ipr_cmd;
3763 struct ipr_ioa_cfg *ioa_cfg;
3764 struct ipr_resource_entry *res;
3765 struct ipr_cmd_pkt *cmd_pkt;
3766 u32 ioasc;
3767 int op_found = 0;
3768
3769 ENTER;
3770 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3771 res = scsi_cmd->device->hostdata;
3772
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003773 /* If we are currently going through reset/reload, return failed.
3774 * This will force the mid-layer to call ipr_eh_host_reset,
3775 * which will then go to sleep and wait for the reset to complete
3776 */
3777 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3778 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003779 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3780 return FAILED;
3781
3782 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3783 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3784 ipr_cmd->done = ipr_scsi_eh_done;
3785 op_found = 1;
3786 break;
3787 }
3788 }
3789
3790 if (!op_found)
3791 return SUCCESS;
3792
3793 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3794 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3795 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3796 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3797 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3798 ipr_cmd->u.sdev = scsi_cmd->device;
3799
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003800 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
3801 scsi_cmd->cmnd[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003802 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3803 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3804
3805 /*
3806 * If the abort task timed out and we sent a bus reset, we will get
3807 * one the following responses to the abort
3808 */
3809 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3810 ioasc = 0;
3811 ipr_trace;
3812 }
3813
3814 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06003815 if (!ipr_is_naca_model(res))
3816 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003817
3818 LEAVE;
3819 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3820}
3821
3822/**
3823 * ipr_eh_abort - Abort a single op
3824 * @scsi_cmd: scsi command struct
3825 *
3826 * Return value:
3827 * SUCCESS / FAILED
3828 **/
3829static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3830{
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003831 unsigned long flags;
3832 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003833
3834 ENTER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003835
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003836 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3837 rc = ipr_cancel_op(scsi_cmd);
3838 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003839
3840 LEAVE;
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003841 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003842}
3843
3844/**
3845 * ipr_handle_other_interrupt - Handle "other" interrupts
3846 * @ioa_cfg: ioa config struct
3847 * @int_reg: interrupt register
3848 *
3849 * Return value:
3850 * IRQ_NONE / IRQ_HANDLED
3851 **/
3852static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3853 volatile u32 int_reg)
3854{
3855 irqreturn_t rc = IRQ_HANDLED;
3856
3857 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3858 /* Mask the interrupt */
3859 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3860
3861 /* Clear the interrupt */
3862 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3863 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3864
3865 list_del(&ioa_cfg->reset_cmd->queue);
3866 del_timer(&ioa_cfg->reset_cmd->timer);
3867 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3868 } else {
3869 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3870 ioa_cfg->ioa_unit_checked = 1;
3871 else
3872 dev_err(&ioa_cfg->pdev->dev,
3873 "Permanent IOA failure. 0x%08X\n", int_reg);
3874
3875 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3876 ioa_cfg->sdt_state = GET_DUMP;
3877
3878 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3879 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3880 }
3881
3882 return rc;
3883}
3884
3885/**
3886 * ipr_isr - Interrupt service routine
3887 * @irq: irq number
3888 * @devp: pointer to ioa config struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07003889 *
3890 * Return value:
3891 * IRQ_NONE / IRQ_HANDLED
3892 **/
David Howells7d12e782006-10-05 14:55:46 +01003893static irqreturn_t ipr_isr(int irq, void *devp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003894{
3895 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3896 unsigned long lock_flags = 0;
3897 volatile u32 int_reg, int_mask_reg;
3898 u32 ioasc;
3899 u16 cmd_index;
3900 struct ipr_cmnd *ipr_cmd;
3901 irqreturn_t rc = IRQ_NONE;
3902
3903 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3904
3905 /* If interrupts are disabled, ignore the interrupt */
3906 if (!ioa_cfg->allow_interrupts) {
3907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3908 return IRQ_NONE;
3909 }
3910
3911 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3912 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3913
3914 /* If an interrupt on the adapter did not occur, ignore it */
3915 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3916 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3917 return IRQ_NONE;
3918 }
3919
3920 while (1) {
3921 ipr_cmd = NULL;
3922
3923 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3924 ioa_cfg->toggle_bit) {
3925
3926 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3927 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3928
3929 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3930 ioa_cfg->errors_logged++;
3931 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3932
3933 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3934 ioa_cfg->sdt_state = GET_DUMP;
3935
3936 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3937 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3938 return IRQ_HANDLED;
3939 }
3940
3941 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3942
3943 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3944
3945 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3946
3947 list_del(&ipr_cmd->queue);
3948 del_timer(&ipr_cmd->timer);
3949 ipr_cmd->done(ipr_cmd);
3950
3951 rc = IRQ_HANDLED;
3952
3953 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3954 ioa_cfg->hrrq_curr++;
3955 } else {
3956 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3957 ioa_cfg->toggle_bit ^= 1u;
3958 }
3959 }
3960
3961 if (ipr_cmd != NULL) {
3962 /* Clear the PCI interrupt */
3963 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3964 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3965 } else
3966 break;
3967 }
3968
3969 if (unlikely(rc == IRQ_NONE))
3970 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3971
3972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3973 return rc;
3974}
3975
3976/**
3977 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3978 * @ioa_cfg: ioa config struct
3979 * @ipr_cmd: ipr command struct
3980 *
3981 * Return value:
3982 * 0 on success / -1 on failure
3983 **/
3984static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3985 struct ipr_cmnd *ipr_cmd)
3986{
3987 int i;
3988 struct scatterlist *sglist;
3989 u32 length;
3990 u32 ioadl_flags = 0;
3991 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3992 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3993 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3994
3995 length = scsi_cmd->request_bufflen;
3996
3997 if (length == 0)
3998 return 0;
3999
4000 if (scsi_cmd->use_sg) {
4001 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4002 scsi_cmd->request_buffer,
4003 scsi_cmd->use_sg,
4004 scsi_cmd->sc_data_direction);
4005
4006 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4007 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4008 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4009 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4010 ioarcb->write_ioadl_len =
4011 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4012 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4013 ioadl_flags = IPR_IOADL_FLAGS_READ;
4014 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4015 ioarcb->read_ioadl_len =
4016 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4017 }
4018
4019 sglist = scsi_cmd->request_buffer;
4020
4021 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4022 ioadl[i].flags_and_data_len =
4023 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4024 ioadl[i].address =
4025 cpu_to_be32(sg_dma_address(&sglist[i]));
4026 }
4027
4028 if (likely(ipr_cmd->dma_use_sg)) {
4029 ioadl[i-1].flags_and_data_len |=
4030 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4031 return 0;
4032 } else
4033 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4034 } else {
4035 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4036 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4037 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4038 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4039 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4040 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4041 ioadl_flags = IPR_IOADL_FLAGS_READ;
4042 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4043 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4044 }
4045
4046 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4047 scsi_cmd->request_buffer, length,
4048 scsi_cmd->sc_data_direction);
4049
4050 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4051 ipr_cmd->dma_use_sg = 1;
4052 ioadl[0].flags_and_data_len =
4053 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4054 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4055 return 0;
4056 } else
4057 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4058 }
4059
4060 return -1;
4061}
4062
4063/**
4064 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4065 * @scsi_cmd: scsi command struct
4066 *
4067 * Return value:
4068 * task attributes
4069 **/
4070static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4071{
4072 u8 tag[2];
4073 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4074
4075 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4076 switch (tag[0]) {
4077 case MSG_SIMPLE_TAG:
4078 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4079 break;
4080 case MSG_HEAD_TAG:
4081 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4082 break;
4083 case MSG_ORDERED_TAG:
4084 rc = IPR_FLAGS_LO_ORDERED_TASK;
4085 break;
4086 };
4087 }
4088
4089 return rc;
4090}
4091
4092/**
4093 * ipr_erp_done - Process completion of ERP for a device
4094 * @ipr_cmd: ipr command struct
4095 *
4096 * This function copies the sense buffer into the scsi_cmd
4097 * struct and pushes the scsi_done function.
4098 *
4099 * Return value:
4100 * nothing
4101 **/
4102static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4103{
4104 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4105 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4106 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4107 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4108
4109 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4110 scsi_cmd->result |= (DID_ERROR << 16);
Brian Kingfb3ed3c2006-03-29 09:37:37 -06004111 scmd_printk(KERN_ERR, scsi_cmd,
4112 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004113 } else {
4114 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4115 SCSI_SENSE_BUFFERSIZE);
4116 }
4117
4118 if (res) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004119 if (!ipr_is_naca_model(res))
4120 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004121 res->in_erp = 0;
4122 }
4123 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4124 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4125 scsi_cmd->scsi_done(scsi_cmd);
4126}
4127
4128/**
4129 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4130 * @ipr_cmd: ipr command struct
4131 *
4132 * Return value:
4133 * none
4134 **/
4135static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4136{
4137 struct ipr_ioarcb *ioarcb;
4138 struct ipr_ioasa *ioasa;
4139
4140 ioarcb = &ipr_cmd->ioarcb;
4141 ioasa = &ipr_cmd->ioasa;
4142
4143 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4144 ioarcb->write_data_transfer_length = 0;
4145 ioarcb->read_data_transfer_length = 0;
4146 ioarcb->write_ioadl_len = 0;
4147 ioarcb->read_ioadl_len = 0;
4148 ioasa->ioasc = 0;
4149 ioasa->residual_data_len = 0;
4150}
4151
4152/**
4153 * ipr_erp_request_sense - Send request sense to a device
4154 * @ipr_cmd: ipr command struct
4155 *
4156 * This function sends a request sense to a device as a result
4157 * of a check condition.
4158 *
4159 * Return value:
4160 * nothing
4161 **/
4162static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4163{
4164 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4165 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4166
4167 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4168 ipr_erp_done(ipr_cmd);
4169 return;
4170 }
4171
4172 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4173
4174 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4175 cmd_pkt->cdb[0] = REQUEST_SENSE;
4176 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4177 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4178 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4179 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4180
4181 ipr_cmd->ioadl[0].flags_and_data_len =
4182 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4183 ipr_cmd->ioadl[0].address =
4184 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4185
4186 ipr_cmd->ioarcb.read_ioadl_len =
4187 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4188 ipr_cmd->ioarcb.read_data_transfer_length =
4189 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4190
4191 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4192 IPR_REQUEST_SENSE_TIMEOUT * 2);
4193}
4194
4195/**
4196 * ipr_erp_cancel_all - Send cancel all to a device
4197 * @ipr_cmd: ipr command struct
4198 *
4199 * This function sends a cancel all to a device to clear the
4200 * queue. If we are running TCQ on the device, QERR is set to 1,
4201 * which means all outstanding ops have been dropped on the floor.
4202 * Cancel all will return them to us.
4203 *
4204 * Return value:
4205 * nothing
4206 **/
4207static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4208{
4209 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4210 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4211 struct ipr_cmd_pkt *cmd_pkt;
4212
4213 res->in_erp = 1;
4214
4215 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4216
4217 if (!scsi_get_tag_type(scsi_cmd->device)) {
4218 ipr_erp_request_sense(ipr_cmd);
4219 return;
4220 }
4221
4222 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4223 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4224 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4225
4226 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4227 IPR_CANCEL_ALL_TIMEOUT);
4228}
4229
4230/**
4231 * ipr_dump_ioasa - Dump contents of IOASA
4232 * @ioa_cfg: ioa config struct
4233 * @ipr_cmd: ipr command struct
Brian Kingfe964d02006-03-29 09:37:29 -06004234 * @res: resource entry struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07004235 *
4236 * This function is invoked by the interrupt handler when ops
4237 * fail. It will log the IOASA if appropriate. Only called
4238 * for GPDD ops.
4239 *
4240 * Return value:
4241 * none
4242 **/
4243static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
Brian Kingfe964d02006-03-29 09:37:29 -06004244 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004245{
4246 int i;
4247 u16 data_len;
4248 u32 ioasc;
4249 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4250 __be32 *ioasa_data = (__be32 *)ioasa;
4251 int error_index;
4252
4253 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4254
4255 if (0 == ioasc)
4256 return;
4257
4258 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4259 return;
4260
4261 error_index = ipr_get_error(ioasc);
4262
4263 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4264 /* Don't log an error if the IOA already logged one */
4265 if (ioasa->ilid != 0)
4266 return;
4267
4268 if (ipr_error_table[error_index].log_ioasa == 0)
4269 return;
4270 }
4271
Brian Kingfe964d02006-03-29 09:37:29 -06004272 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004273
4274 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4275 data_len = sizeof(struct ipr_ioasa);
4276 else
4277 data_len = be16_to_cpu(ioasa->ret_stat_len);
4278
4279 ipr_err("IOASA Dump:\n");
4280
4281 for (i = 0; i < data_len / 4; i += 4) {
4282 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4283 be32_to_cpu(ioasa_data[i]),
4284 be32_to_cpu(ioasa_data[i+1]),
4285 be32_to_cpu(ioasa_data[i+2]),
4286 be32_to_cpu(ioasa_data[i+3]));
4287 }
4288}
4289
4290/**
4291 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4292 * @ioasa: IOASA
4293 * @sense_buf: sense data buffer
4294 *
4295 * Return value:
4296 * none
4297 **/
4298static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4299{
4300 u32 failing_lba;
4301 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4302 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4303 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4304 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4305
4306 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4307
4308 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4309 return;
4310
4311 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4312
4313 if (ipr_is_vset_device(res) &&
4314 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4315 ioasa->u.vset.failing_lba_hi != 0) {
4316 sense_buf[0] = 0x72;
4317 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4318 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4319 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4320
4321 sense_buf[7] = 12;
4322 sense_buf[8] = 0;
4323 sense_buf[9] = 0x0A;
4324 sense_buf[10] = 0x80;
4325
4326 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4327
4328 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4329 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4330 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4331 sense_buf[15] = failing_lba & 0x000000ff;
4332
4333 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4334
4335 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4336 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4337 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4338 sense_buf[19] = failing_lba & 0x000000ff;
4339 } else {
4340 sense_buf[0] = 0x70;
4341 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4342 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4343 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4344
4345 /* Illegal request */
4346 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4347 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4348 sense_buf[7] = 10; /* additional length */
4349
4350 /* IOARCB was in error */
4351 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4352 sense_buf[15] = 0xC0;
4353 else /* Parameter data was invalid */
4354 sense_buf[15] = 0x80;
4355
4356 sense_buf[16] =
4357 ((IPR_FIELD_POINTER_MASK &
4358 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4359 sense_buf[17] =
4360 (IPR_FIELD_POINTER_MASK &
4361 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4362 } else {
4363 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4364 if (ipr_is_vset_device(res))
4365 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4366 else
4367 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4368
4369 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4370 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4371 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4372 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4373 sense_buf[6] = failing_lba & 0x000000ff;
4374 }
4375
4376 sense_buf[7] = 6; /* additional length */
4377 }
4378 }
4379}
4380
4381/**
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004382 * ipr_get_autosense - Copy autosense data to sense buffer
4383 * @ipr_cmd: ipr command struct
4384 *
4385 * This function copies the autosense buffer to the buffer
4386 * in the scsi_cmd, if there is autosense available.
4387 *
4388 * Return value:
4389 * 1 if autosense was available / 0 if not
4390 **/
4391static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4392{
4393 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4394
Brian King117d2ce2006-08-02 14:57:58 -05004395 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004396 return 0;
4397
4398 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4399 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4400 SCSI_SENSE_BUFFERSIZE));
4401 return 1;
4402}
4403
4404/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004405 * ipr_erp_start - Process an error response for a SCSI op
4406 * @ioa_cfg: ioa config struct
4407 * @ipr_cmd: ipr command struct
4408 *
4409 * This function determines whether or not to initiate ERP
4410 * on the affected device.
4411 *
4412 * Return value:
4413 * nothing
4414 **/
4415static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4416 struct ipr_cmnd *ipr_cmd)
4417{
4418 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4419 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4420 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4421
4422 if (!res) {
4423 ipr_scsi_eh_done(ipr_cmd);
4424 return;
4425 }
4426
4427 if (ipr_is_gscsi(res))
Brian Kingfe964d02006-03-29 09:37:29 -06004428 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004429 else
4430 ipr_gen_sense(ipr_cmd);
4431
4432 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4433 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004434 if (ipr_is_naca_model(res))
4435 scsi_cmd->result |= (DID_ABORT << 16);
4436 else
4437 scsi_cmd->result |= (DID_IMM_RETRY << 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004438 break;
4439 case IPR_IOASC_IR_RESOURCE_HANDLE:
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004440 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004441 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4442 break;
4443 case IPR_IOASC_HW_SEL_TIMEOUT:
4444 scsi_cmd->result |= (DID_NO_CONNECT << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004445 if (!ipr_is_naca_model(res))
4446 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004447 break;
4448 case IPR_IOASC_SYNC_REQUIRED:
4449 if (!res->in_erp)
4450 res->needs_sync_complete = 1;
4451 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4452 break;
4453 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004454 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004455 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4456 break;
4457 case IPR_IOASC_BUS_WAS_RESET:
4458 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4459 /*
4460 * Report the bus reset and ask for a retry. The device
4461 * will give CC/UA the next command.
4462 */
4463 if (!res->resetting_device)
4464 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4465 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004466 if (!ipr_is_naca_model(res))
4467 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004468 break;
4469 case IPR_IOASC_HW_DEV_BUS_STATUS:
4470 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4471 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004472 if (!ipr_get_autosense(ipr_cmd)) {
4473 if (!ipr_is_naca_model(res)) {
4474 ipr_erp_cancel_all(ipr_cmd);
4475 return;
4476 }
4477 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004478 }
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004479 if (!ipr_is_naca_model(res))
4480 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004481 break;
4482 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4483 break;
4484 default:
Brian King5b7304f2006-08-02 14:57:51 -05004485 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4486 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004487 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004488 res->needs_sync_complete = 1;
4489 break;
4490 }
4491
4492 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4493 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4494 scsi_cmd->scsi_done(scsi_cmd);
4495}
4496
4497/**
4498 * ipr_scsi_done - mid-layer done function
4499 * @ipr_cmd: ipr command struct
4500 *
4501 * This function is invoked by the interrupt handler for
4502 * ops generated by the SCSI mid-layer
4503 *
4504 * Return value:
4505 * none
4506 **/
4507static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4508{
4509 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4510 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4511 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4512
4513 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4514
4515 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4516 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4517 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4518 scsi_cmd->scsi_done(scsi_cmd);
4519 } else
4520 ipr_erp_start(ioa_cfg, ipr_cmd);
4521}
4522
4523/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004524 * ipr_queuecommand - Queue a mid-layer request
4525 * @scsi_cmd: scsi command struct
4526 * @done: done function
4527 *
4528 * This function queues a request generated by the mid-layer.
4529 *
4530 * Return value:
4531 * 0 on success
4532 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4533 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4534 **/
4535static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4536 void (*done) (struct scsi_cmnd *))
4537{
4538 struct ipr_ioa_cfg *ioa_cfg;
4539 struct ipr_resource_entry *res;
4540 struct ipr_ioarcb *ioarcb;
4541 struct ipr_cmnd *ipr_cmd;
4542 int rc = 0;
4543
4544 scsi_cmd->scsi_done = done;
4545 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4546 res = scsi_cmd->device->hostdata;
4547 scsi_cmd->result = (DID_OK << 16);
4548
4549 /*
4550 * We are currently blocking all devices due to a host reset
4551 * We have told the host to stop giving us new requests, but
4552 * ERP ops don't count. FIXME
4553 */
4554 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4555 return SCSI_MLQUEUE_HOST_BUSY;
4556
4557 /*
4558 * FIXME - Create scsi_set_host_offline interface
4559 * and the ioa_is_dead check can be removed
4560 */
4561 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4562 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4563 scsi_cmd->result = (DID_NO_CONNECT << 16);
4564 scsi_cmd->scsi_done(scsi_cmd);
4565 return 0;
4566 }
4567
Brian King35a39692006-09-25 12:39:20 -05004568 if (ipr_is_gata(res) && res->sata_port)
4569 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4570
Linus Torvalds1da177e2005-04-16 15:20:36 -07004571 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4572 ioarcb = &ipr_cmd->ioarcb;
4573 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4574
4575 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4576 ipr_cmd->scsi_cmd = scsi_cmd;
4577 ioarcb->res_handle = res->cfgte.res_handle;
4578 ipr_cmd->done = ipr_scsi_done;
4579 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4580
4581 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4582 if (scsi_cmd->underflow == 0)
4583 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4584
4585 if (res->needs_sync_complete) {
4586 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4587 res->needs_sync_complete = 0;
4588 }
4589
4590 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4591 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4592 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4593 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4594 }
4595
4596 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4597 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4598 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4599
Linus Torvalds1da177e2005-04-16 15:20:36 -07004600 if (likely(rc == 0))
4601 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4602
4603 if (likely(rc == 0)) {
4604 mb();
4605 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4606 ioa_cfg->regs.ioarrin_reg);
4607 } else {
4608 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4609 return SCSI_MLQUEUE_HOST_BUSY;
4610 }
4611
4612 return 0;
4613}
4614
4615/**
Brian King35a39692006-09-25 12:39:20 -05004616 * ipr_ioctl - IOCTL handler
4617 * @sdev: scsi device struct
4618 * @cmd: IOCTL cmd
4619 * @arg: IOCTL arg
4620 *
4621 * Return value:
4622 * 0 on success / other on failure
4623 **/
4624int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4625{
4626 struct ipr_resource_entry *res;
4627
4628 res = (struct ipr_resource_entry *)sdev->hostdata;
4629 if (res && ipr_is_gata(res))
4630 return ata_scsi_ioctl(sdev, cmd, arg);
4631
4632 return -EINVAL;
4633}
4634
4635/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004636 * ipr_info - Get information about the card/driver
4637 * @scsi_host: scsi host struct
4638 *
4639 * Return value:
4640 * pointer to buffer with description string
4641 **/
4642static const char * ipr_ioa_info(struct Scsi_Host *host)
4643{
4644 static char buffer[512];
4645 struct ipr_ioa_cfg *ioa_cfg;
4646 unsigned long lock_flags = 0;
4647
4648 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4649
4650 spin_lock_irqsave(host->host_lock, lock_flags);
4651 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4652 spin_unlock_irqrestore(host->host_lock, lock_flags);
4653
4654 return buffer;
4655}
4656
Brian King35a39692006-09-25 12:39:20 -05004657/**
4658 * ipr_scsi_timed_out - Handle scsi command timeout
4659 * @scsi_cmd: scsi command struct
4660 *
4661 * Return value:
4662 * EH_NOT_HANDLED
4663 **/
4664enum scsi_eh_timer_return ipr_scsi_timed_out(struct scsi_cmnd *scsi_cmd)
4665{
4666 struct ipr_ioa_cfg *ioa_cfg;
4667 struct ipr_cmnd *ipr_cmd;
4668 unsigned long flags;
4669
4670 ENTER;
4671 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4672 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4673
4674 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4675 if (ipr_cmd->qc && ipr_cmd->qc->scsicmd == scsi_cmd) {
4676 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4677 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4678 break;
4679 }
4680 }
4681
4682 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4683 LEAVE;
4684 return EH_NOT_HANDLED;
4685}
4686
4687static struct scsi_transport_template ipr_transport_template = {
4688 .eh_timed_out = ipr_scsi_timed_out
4689};
4690
Linus Torvalds1da177e2005-04-16 15:20:36 -07004691static struct scsi_host_template driver_template = {
4692 .module = THIS_MODULE,
4693 .name = "IPR",
4694 .info = ipr_ioa_info,
Brian King35a39692006-09-25 12:39:20 -05004695 .ioctl = ipr_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004696 .queuecommand = ipr_queuecommand,
4697 .eh_abort_handler = ipr_eh_abort,
4698 .eh_device_reset_handler = ipr_eh_dev_reset,
4699 .eh_host_reset_handler = ipr_eh_host_reset,
4700 .slave_alloc = ipr_slave_alloc,
4701 .slave_configure = ipr_slave_configure,
4702 .slave_destroy = ipr_slave_destroy,
Brian King35a39692006-09-25 12:39:20 -05004703 .target_alloc = ipr_target_alloc,
4704 .target_destroy = ipr_target_destroy,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004705 .change_queue_depth = ipr_change_queue_depth,
4706 .change_queue_type = ipr_change_queue_type,
4707 .bios_param = ipr_biosparam,
4708 .can_queue = IPR_MAX_COMMANDS,
4709 .this_id = -1,
4710 .sg_tablesize = IPR_MAX_SGLIST,
4711 .max_sectors = IPR_IOA_MAX_SECTORS,
4712 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4713 .use_clustering = ENABLE_CLUSTERING,
4714 .shost_attrs = ipr_ioa_attrs,
4715 .sdev_attrs = ipr_dev_attrs,
4716 .proc_name = IPR_NAME
4717};
4718
Brian King35a39692006-09-25 12:39:20 -05004719/**
4720 * ipr_ata_phy_reset - libata phy_reset handler
4721 * @ap: ata port to reset
4722 *
4723 **/
4724static void ipr_ata_phy_reset(struct ata_port *ap)
4725{
4726 unsigned long flags;
4727 struct ipr_sata_port *sata_port = ap->private_data;
4728 struct ipr_resource_entry *res = sata_port->res;
4729 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4730 int rc;
4731
4732 ENTER;
4733 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4734 while(ioa_cfg->in_reset_reload) {
4735 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4736 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4737 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4738 }
4739
4740 if (!ioa_cfg->allow_cmds)
4741 goto out_unlock;
4742
4743 rc = ipr_device_reset(ioa_cfg, res);
4744
4745 if (rc) {
4746 ap->ops->port_disable(ap);
4747 goto out_unlock;
4748 }
4749
4750 switch(res->cfgte.proto) {
4751 case IPR_PROTO_SATA:
4752 case IPR_PROTO_SAS_STP:
4753 ap->device[0].class = ATA_DEV_ATA;
4754 break;
4755 case IPR_PROTO_SATA_ATAPI:
4756 case IPR_PROTO_SAS_STP_ATAPI:
4757 ap->device[0].class = ATA_DEV_ATAPI;
4758 break;
4759 default:
4760 ap->device[0].class = ATA_DEV_UNKNOWN;
4761 ap->ops->port_disable(ap);
4762 break;
4763 };
4764
4765out_unlock:
4766 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4767 LEAVE;
4768}
4769
4770/**
4771 * ipr_ata_post_internal - Cleanup after an internal command
4772 * @qc: ATA queued command
4773 *
4774 * Return value:
4775 * none
4776 **/
4777static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4778{
4779 struct ipr_sata_port *sata_port = qc->ap->private_data;
4780 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4781 struct ipr_cmnd *ipr_cmd;
4782 unsigned long flags;
4783
4784 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
Brian King73d98ff2006-11-21 10:27:58 -06004785 while(ioa_cfg->in_reset_reload) {
4786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4787 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4788 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4789 }
4790
Brian King35a39692006-09-25 12:39:20 -05004791 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4792 if (ipr_cmd->qc == qc) {
4793 ipr_device_reset(ioa_cfg, sata_port->res);
4794 break;
4795 }
4796 }
4797 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4798}
4799
4800/**
4801 * ipr_tf_read - Read the current ATA taskfile for the ATA port
4802 * @ap: ATA port
4803 * @tf: destination ATA taskfile
4804 *
4805 * Return value:
4806 * none
4807 **/
4808static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
4809{
4810 struct ipr_sata_port *sata_port = ap->private_data;
4811 struct ipr_ioasa_gata *g = &sata_port->ioasa;
4812
4813 tf->feature = g->error;
4814 tf->nsect = g->nsect;
4815 tf->lbal = g->lbal;
4816 tf->lbam = g->lbam;
4817 tf->lbah = g->lbah;
4818 tf->device = g->device;
4819 tf->command = g->status;
4820 tf->hob_nsect = g->hob_nsect;
4821 tf->hob_lbal = g->hob_lbal;
4822 tf->hob_lbam = g->hob_lbam;
4823 tf->hob_lbah = g->hob_lbah;
4824 tf->ctl = g->alt_status;
4825}
4826
4827/**
4828 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
4829 * @regs: destination
4830 * @tf: source ATA taskfile
4831 *
4832 * Return value:
4833 * none
4834 **/
4835static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
4836 struct ata_taskfile *tf)
4837{
4838 regs->feature = tf->feature;
4839 regs->nsect = tf->nsect;
4840 regs->lbal = tf->lbal;
4841 regs->lbam = tf->lbam;
4842 regs->lbah = tf->lbah;
4843 regs->device = tf->device;
4844 regs->command = tf->command;
4845 regs->hob_feature = tf->hob_feature;
4846 regs->hob_nsect = tf->hob_nsect;
4847 regs->hob_lbal = tf->hob_lbal;
4848 regs->hob_lbam = tf->hob_lbam;
4849 regs->hob_lbah = tf->hob_lbah;
4850 regs->ctl = tf->ctl;
4851}
4852
4853/**
4854 * ipr_sata_done - done function for SATA commands
4855 * @ipr_cmd: ipr command struct
4856 *
4857 * This function is invoked by the interrupt handler for
4858 * ops generated by the SCSI mid-layer to SATA devices
4859 *
4860 * Return value:
4861 * none
4862 **/
4863static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
4864{
4865 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4866 struct ata_queued_cmd *qc = ipr_cmd->qc;
4867 struct ipr_sata_port *sata_port = qc->ap->private_data;
4868 struct ipr_resource_entry *res = sata_port->res;
4869 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4870
4871 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
4872 sizeof(struct ipr_ioasa_gata));
4873 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4874
4875 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
4876 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
4877 res->cfgte.res_addr.target);
4878
4879 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4880 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
4881 else
4882 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
4883 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4884 ata_qc_complete(qc);
4885}
4886
4887/**
4888 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
4889 * @ipr_cmd: ipr command struct
4890 * @qc: ATA queued command
4891 *
4892 **/
4893static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
4894 struct ata_queued_cmd *qc)
4895{
4896 u32 ioadl_flags = 0;
4897 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4898 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4899 int len = qc->nbytes + qc->pad_len;
4900 struct scatterlist *sg;
4901
4902 if (len == 0)
4903 return;
4904
4905 if (qc->dma_dir == DMA_TO_DEVICE) {
4906 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4907 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4908 ioarcb->write_data_transfer_length = cpu_to_be32(len);
4909 ioarcb->write_ioadl_len =
4910 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4911 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
4912 ioadl_flags = IPR_IOADL_FLAGS_READ;
4913 ioarcb->read_data_transfer_length = cpu_to_be32(len);
4914 ioarcb->read_ioadl_len =
4915 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4916 }
4917
4918 ata_for_each_sg(sg, qc) {
4919 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4920 ioadl->address = cpu_to_be32(sg_dma_address(sg));
4921 if (ata_sg_is_last(sg, qc))
4922 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4923 else
4924 ioadl++;
4925 }
4926}
4927
4928/**
4929 * ipr_qc_issue - Issue a SATA qc to a device
4930 * @qc: queued command
4931 *
4932 * Return value:
4933 * 0 if success
4934 **/
4935static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
4936{
4937 struct ata_port *ap = qc->ap;
4938 struct ipr_sata_port *sata_port = ap->private_data;
4939 struct ipr_resource_entry *res = sata_port->res;
4940 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4941 struct ipr_cmnd *ipr_cmd;
4942 struct ipr_ioarcb *ioarcb;
4943 struct ipr_ioarcb_ata_regs *regs;
4944
4945 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
4946 return -EIO;
4947
4948 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4949 ioarcb = &ipr_cmd->ioarcb;
4950 regs = &ioarcb->add_data.u.regs;
4951
4952 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
4953 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
4954
4955 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4956 ipr_cmd->qc = qc;
4957 ipr_cmd->done = ipr_sata_done;
4958 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4959 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
4960 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4961 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4962 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
4963
4964 ipr_build_ata_ioadl(ipr_cmd, qc);
4965 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4966 ipr_copy_sata_tf(regs, &qc->tf);
4967 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
4968 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4969
4970 switch (qc->tf.protocol) {
4971 case ATA_PROT_NODATA:
4972 case ATA_PROT_PIO:
4973 break;
4974
4975 case ATA_PROT_DMA:
4976 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
4977 break;
4978
4979 case ATA_PROT_ATAPI:
4980 case ATA_PROT_ATAPI_NODATA:
4981 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
4982 break;
4983
4984 case ATA_PROT_ATAPI_DMA:
4985 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
4986 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
4987 break;
4988
4989 default:
4990 WARN_ON(1);
4991 return -1;
4992 }
4993
4994 mb();
4995 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
4996 ioa_cfg->regs.ioarrin_reg);
4997 return 0;
4998}
4999
5000/**
5001 * ipr_ata_check_status - Return last ATA status
5002 * @ap: ATA port
5003 *
5004 * Return value:
5005 * ATA status
5006 **/
5007static u8 ipr_ata_check_status(struct ata_port *ap)
5008{
5009 struct ipr_sata_port *sata_port = ap->private_data;
5010 return sata_port->ioasa.status;
5011}
5012
5013/**
5014 * ipr_ata_check_altstatus - Return last ATA altstatus
5015 * @ap: ATA port
5016 *
5017 * Return value:
5018 * Alt ATA status
5019 **/
5020static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5021{
5022 struct ipr_sata_port *sata_port = ap->private_data;
5023 return sata_port->ioasa.alt_status;
5024}
5025
5026static struct ata_port_operations ipr_sata_ops = {
5027 .port_disable = ata_port_disable,
5028 .check_status = ipr_ata_check_status,
5029 .check_altstatus = ipr_ata_check_altstatus,
5030 .dev_select = ata_noop_dev_select,
5031 .phy_reset = ipr_ata_phy_reset,
5032 .post_internal_cmd = ipr_ata_post_internal,
5033 .tf_read = ipr_tf_read,
5034 .qc_prep = ata_noop_qc_prep,
5035 .qc_issue = ipr_qc_issue,
5036 .port_start = ata_sas_port_start,
5037 .port_stop = ata_sas_port_stop
5038};
5039
5040static struct ata_port_info sata_port_info = {
5041 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5042 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5043 .pio_mask = 0x10, /* pio4 */
5044 .mwdma_mask = 0x07,
5045 .udma_mask = 0x7f, /* udma0-6 */
5046 .port_ops = &ipr_sata_ops
5047};
5048
Linus Torvalds1da177e2005-04-16 15:20:36 -07005049#ifdef CONFIG_PPC_PSERIES
5050static const u16 ipr_blocked_processors[] = {
5051 PV_NORTHSTAR,
5052 PV_PULSAR,
5053 PV_POWER4,
5054 PV_ICESTAR,
5055 PV_SSTAR,
5056 PV_POWER4p,
5057 PV_630,
5058 PV_630p
5059};
5060
5061/**
5062 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5063 * @ioa_cfg: ioa cfg struct
5064 *
5065 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5066 * certain pSeries hardware. This function determines if the given
5067 * adapter is in one of these confgurations or not.
5068 *
5069 * Return value:
5070 * 1 if adapter is not supported / 0 if adapter is supported
5071 **/
5072static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5073{
5074 u8 rev_id;
5075 int i;
5076
5077 if (ioa_cfg->type == 0x5702) {
5078 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5079 &rev_id) == PCIBIOS_SUCCESSFUL) {
5080 if (rev_id < 4) {
5081 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5082 if (__is_processor(ipr_blocked_processors[i]))
5083 return 1;
5084 }
5085 }
5086 }
5087 }
5088 return 0;
5089}
5090#else
5091#define ipr_invalid_adapter(ioa_cfg) 0
5092#endif
5093
5094/**
5095 * ipr_ioa_bringdown_done - IOA bring down completion.
5096 * @ipr_cmd: ipr command struct
5097 *
5098 * This function processes the completion of an adapter bring down.
5099 * It wakes any reset sleepers.
5100 *
5101 * Return value:
5102 * IPR_RC_JOB_RETURN
5103 **/
5104static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5105{
5106 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5107
5108 ENTER;
5109 ioa_cfg->in_reset_reload = 0;
5110 ioa_cfg->reset_retries = 0;
5111 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5112 wake_up_all(&ioa_cfg->reset_wait_q);
5113
5114 spin_unlock_irq(ioa_cfg->host->host_lock);
5115 scsi_unblock_requests(ioa_cfg->host);
5116 spin_lock_irq(ioa_cfg->host->host_lock);
5117 LEAVE;
5118
5119 return IPR_RC_JOB_RETURN;
5120}
5121
5122/**
5123 * ipr_ioa_reset_done - IOA reset completion.
5124 * @ipr_cmd: ipr command struct
5125 *
5126 * This function processes the completion of an adapter reset.
5127 * It schedules any necessary mid-layer add/removes and
5128 * wakes any reset sleepers.
5129 *
5130 * Return value:
5131 * IPR_RC_JOB_RETURN
5132 **/
5133static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5134{
5135 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5136 struct ipr_resource_entry *res;
5137 struct ipr_hostrcb *hostrcb, *temp;
5138 int i = 0;
5139
5140 ENTER;
5141 ioa_cfg->in_reset_reload = 0;
5142 ioa_cfg->allow_cmds = 1;
5143 ioa_cfg->reset_cmd = NULL;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06005144 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005145
5146 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5147 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5148 ipr_trace;
5149 break;
5150 }
5151 }
5152 schedule_work(&ioa_cfg->work_q);
5153
5154 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5155 list_del(&hostrcb->queue);
5156 if (i++ < IPR_NUM_LOG_HCAMS)
5157 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5158 else
5159 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5160 }
5161
5162 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5163
5164 ioa_cfg->reset_retries = 0;
5165 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5166 wake_up_all(&ioa_cfg->reset_wait_q);
5167
5168 spin_unlock_irq(ioa_cfg->host->host_lock);
5169 scsi_unblock_requests(ioa_cfg->host);
5170 spin_lock_irq(ioa_cfg->host->host_lock);
5171
5172 if (!ioa_cfg->allow_cmds)
5173 scsi_block_requests(ioa_cfg->host);
5174
5175 LEAVE;
5176 return IPR_RC_JOB_RETURN;
5177}
5178
5179/**
5180 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5181 * @supported_dev: supported device struct
5182 * @vpids: vendor product id struct
5183 *
5184 * Return value:
5185 * none
5186 **/
5187static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5188 struct ipr_std_inq_vpids *vpids)
5189{
5190 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5191 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5192 supported_dev->num_records = 1;
5193 supported_dev->data_length =
5194 cpu_to_be16(sizeof(struct ipr_supported_device));
5195 supported_dev->reserved = 0;
5196}
5197
5198/**
5199 * ipr_set_supported_devs - Send Set Supported Devices for a device
5200 * @ipr_cmd: ipr command struct
5201 *
5202 * This function send a Set Supported Devices to the adapter
5203 *
5204 * Return value:
5205 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5206 **/
5207static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5208{
5209 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5210 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5211 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5212 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5213 struct ipr_resource_entry *res = ipr_cmd->u.res;
5214
5215 ipr_cmd->job_step = ipr_ioa_reset_done;
5216
5217 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
Brian Kinge4fbf442006-03-29 09:37:22 -06005218 if (!ipr_is_scsi_disk(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07005219 continue;
5220
5221 ipr_cmd->u.res = res;
5222 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5223
5224 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5225 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5226 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5227
5228 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5229 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5230 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5231
5232 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5233 sizeof(struct ipr_supported_device));
5234 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5235 offsetof(struct ipr_misc_cbs, supp_dev));
5236 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5237 ioarcb->write_data_transfer_length =
5238 cpu_to_be32(sizeof(struct ipr_supported_device));
5239
5240 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5241 IPR_SET_SUP_DEVICE_TIMEOUT);
5242
5243 ipr_cmd->job_step = ipr_set_supported_devs;
5244 return IPR_RC_JOB_RETURN;
5245 }
5246
5247 return IPR_RC_JOB_CONTINUE;
5248}
5249
5250/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06005251 * ipr_setup_write_cache - Disable write cache if needed
5252 * @ipr_cmd: ipr command struct
5253 *
5254 * This function sets up adapters write cache to desired setting
5255 *
5256 * Return value:
5257 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5258 **/
5259static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5260{
5261 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5262
5263 ipr_cmd->job_step = ipr_set_supported_devs;
5264 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5265 struct ipr_resource_entry, queue);
5266
5267 if (ioa_cfg->cache_state != CACHE_DISABLED)
5268 return IPR_RC_JOB_CONTINUE;
5269
5270 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5271 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5272 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5273 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5274
5275 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5276
5277 return IPR_RC_JOB_RETURN;
5278}
5279
5280/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005281 * ipr_get_mode_page - Locate specified mode page
5282 * @mode_pages: mode page buffer
5283 * @page_code: page code to find
5284 * @len: minimum required length for mode page
5285 *
5286 * Return value:
5287 * pointer to mode page / NULL on failure
5288 **/
5289static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5290 u32 page_code, u32 len)
5291{
5292 struct ipr_mode_page_hdr *mode_hdr;
5293 u32 page_length;
5294 u32 length;
5295
5296 if (!mode_pages || (mode_pages->hdr.length == 0))
5297 return NULL;
5298
5299 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5300 mode_hdr = (struct ipr_mode_page_hdr *)
5301 (mode_pages->data + mode_pages->hdr.block_desc_len);
5302
5303 while (length) {
5304 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5305 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5306 return mode_hdr;
5307 break;
5308 } else {
5309 page_length = (sizeof(struct ipr_mode_page_hdr) +
5310 mode_hdr->page_length);
5311 length -= page_length;
5312 mode_hdr = (struct ipr_mode_page_hdr *)
5313 ((unsigned long)mode_hdr + page_length);
5314 }
5315 }
5316 return NULL;
5317}
5318
5319/**
5320 * ipr_check_term_power - Check for term power errors
5321 * @ioa_cfg: ioa config struct
5322 * @mode_pages: IOAFP mode pages buffer
5323 *
5324 * Check the IOAFP's mode page 28 for term power errors
5325 *
5326 * Return value:
5327 * nothing
5328 **/
5329static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5330 struct ipr_mode_pages *mode_pages)
5331{
5332 int i;
5333 int entry_length;
5334 struct ipr_dev_bus_entry *bus;
5335 struct ipr_mode_page28 *mode_page;
5336
5337 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5338 sizeof(struct ipr_mode_page28));
5339
5340 entry_length = mode_page->entry_length;
5341
5342 bus = mode_page->bus;
5343
5344 for (i = 0; i < mode_page->num_entries; i++) {
5345 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5346 dev_err(&ioa_cfg->pdev->dev,
5347 "Term power is absent on scsi bus %d\n",
5348 bus->res_addr.bus);
5349 }
5350
5351 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5352 }
5353}
5354
5355/**
5356 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5357 * @ioa_cfg: ioa config struct
5358 *
5359 * Looks through the config table checking for SES devices. If
5360 * the SES device is in the SES table indicating a maximum SCSI
5361 * bus speed, the speed is limited for the bus.
5362 *
5363 * Return value:
5364 * none
5365 **/
5366static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5367{
5368 u32 max_xfer_rate;
5369 int i;
5370
5371 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5372 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5373 ioa_cfg->bus_attr[i].bus_width);
5374
5375 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5376 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5377 }
5378}
5379
5380/**
5381 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5382 * @ioa_cfg: ioa config struct
5383 * @mode_pages: mode page 28 buffer
5384 *
5385 * Updates mode page 28 based on driver configuration
5386 *
5387 * Return value:
5388 * none
5389 **/
5390static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5391 struct ipr_mode_pages *mode_pages)
5392{
5393 int i, entry_length;
5394 struct ipr_dev_bus_entry *bus;
5395 struct ipr_bus_attributes *bus_attr;
5396 struct ipr_mode_page28 *mode_page;
5397
5398 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5399 sizeof(struct ipr_mode_page28));
5400
5401 entry_length = mode_page->entry_length;
5402
5403 /* Loop for each device bus entry */
5404 for (i = 0, bus = mode_page->bus;
5405 i < mode_page->num_entries;
5406 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5407 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5408 dev_err(&ioa_cfg->pdev->dev,
5409 "Invalid resource address reported: 0x%08X\n",
5410 IPR_GET_PHYS_LOC(bus->res_addr));
5411 continue;
5412 }
5413
5414 bus_attr = &ioa_cfg->bus_attr[i];
5415 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5416 bus->bus_width = bus_attr->bus_width;
5417 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5418 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5419 if (bus_attr->qas_enabled)
5420 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5421 else
5422 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5423 }
5424}
5425
5426/**
5427 * ipr_build_mode_select - Build a mode select command
5428 * @ipr_cmd: ipr command struct
5429 * @res_handle: resource handle to send command to
5430 * @parm: Byte 2 of Mode Sense command
5431 * @dma_addr: DMA buffer address
5432 * @xfer_len: data transfer length
5433 *
5434 * Return value:
5435 * none
5436 **/
5437static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5438 __be32 res_handle, u8 parm, u32 dma_addr,
5439 u8 xfer_len)
5440{
5441 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5442 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5443
5444 ioarcb->res_handle = res_handle;
5445 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5446 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5447 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5448 ioarcb->cmd_pkt.cdb[1] = parm;
5449 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5450
5451 ioadl->flags_and_data_len =
5452 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5453 ioadl->address = cpu_to_be32(dma_addr);
5454 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5455 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5456}
5457
5458/**
5459 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5460 * @ipr_cmd: ipr command struct
5461 *
5462 * This function sets up the SCSI bus attributes and sends
5463 * a Mode Select for Page 28 to activate them.
5464 *
5465 * Return value:
5466 * IPR_RC_JOB_RETURN
5467 **/
5468static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5469{
5470 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5471 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5472 int length;
5473
5474 ENTER;
Brian King47338042006-02-08 20:57:42 -06005475 ipr_scsi_bus_speed_limit(ioa_cfg);
5476 ipr_check_term_power(ioa_cfg, mode_pages);
5477 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5478 length = mode_pages->hdr.length + 1;
5479 mode_pages->hdr.length = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005480
5481 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5482 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5483 length);
5484
brking@us.ibm.com62275042005-11-01 17:01:14 -06005485 ipr_cmd->job_step = ipr_setup_write_cache;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005486 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5487
5488 LEAVE;
5489 return IPR_RC_JOB_RETURN;
5490}
5491
5492/**
5493 * ipr_build_mode_sense - Builds a mode sense command
5494 * @ipr_cmd: ipr command struct
5495 * @res: resource entry struct
5496 * @parm: Byte 2 of mode sense command
5497 * @dma_addr: DMA address of mode sense buffer
5498 * @xfer_len: Size of DMA buffer
5499 *
5500 * Return value:
5501 * none
5502 **/
5503static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5504 __be32 res_handle,
5505 u8 parm, u32 dma_addr, u8 xfer_len)
5506{
5507 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5508 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5509
5510 ioarcb->res_handle = res_handle;
5511 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5512 ioarcb->cmd_pkt.cdb[2] = parm;
5513 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5514 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5515
5516 ioadl->flags_and_data_len =
5517 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5518 ioadl->address = cpu_to_be32(dma_addr);
5519 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5520 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5521}
5522
5523/**
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005524 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5525 * @ipr_cmd: ipr command struct
5526 *
5527 * This function handles the failure of an IOA bringup command.
5528 *
5529 * Return value:
5530 * IPR_RC_JOB_RETURN
5531 **/
5532static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5533{
5534 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5535 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5536
5537 dev_err(&ioa_cfg->pdev->dev,
5538 "0x%02X failed with IOASC: 0x%08X\n",
5539 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5540
5541 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5542 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5543 return IPR_RC_JOB_RETURN;
5544}
5545
5546/**
5547 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5548 * @ipr_cmd: ipr command struct
5549 *
5550 * This function handles the failure of a Mode Sense to the IOAFP.
5551 * Some adapters do not handle all mode pages.
5552 *
5553 * Return value:
5554 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5555 **/
5556static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5557{
5558 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5559
5560 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5561 ipr_cmd->job_step = ipr_setup_write_cache;
5562 return IPR_RC_JOB_CONTINUE;
5563 }
5564
5565 return ipr_reset_cmd_failed(ipr_cmd);
5566}
5567
5568/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005569 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5570 * @ipr_cmd: ipr command struct
5571 *
5572 * This function send a Page 28 mode sense to the IOA to
5573 * retrieve SCSI bus attributes.
5574 *
5575 * Return value:
5576 * IPR_RC_JOB_RETURN
5577 **/
5578static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5579{
5580 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5581
5582 ENTER;
5583 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5584 0x28, ioa_cfg->vpd_cbs_dma +
5585 offsetof(struct ipr_misc_cbs, mode_pages),
5586 sizeof(struct ipr_mode_pages));
5587
5588 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005589 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005590
5591 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5592
5593 LEAVE;
5594 return IPR_RC_JOB_RETURN;
5595}
5596
5597/**
5598 * ipr_init_res_table - Initialize the resource table
5599 * @ipr_cmd: ipr command struct
5600 *
5601 * This function looks through the existing resource table, comparing
5602 * it with the config table. This function will take care of old/new
5603 * devices and schedule adding/removing them from the mid-layer
5604 * as appropriate.
5605 *
5606 * Return value:
5607 * IPR_RC_JOB_CONTINUE
5608 **/
5609static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5610{
5611 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5612 struct ipr_resource_entry *res, *temp;
5613 struct ipr_config_table_entry *cfgte;
5614 int found, i;
5615 LIST_HEAD(old_res);
5616
5617 ENTER;
5618 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5619 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5620
5621 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5622 list_move_tail(&res->queue, &old_res);
5623
5624 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5625 cfgte = &ioa_cfg->cfg_table->dev[i];
5626 found = 0;
5627
5628 list_for_each_entry_safe(res, temp, &old_res, queue) {
5629 if (!memcmp(&res->cfgte.res_addr,
5630 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5631 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5632 found = 1;
5633 break;
5634 }
5635 }
5636
5637 if (!found) {
5638 if (list_empty(&ioa_cfg->free_res_q)) {
5639 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5640 break;
5641 }
5642
5643 found = 1;
5644 res = list_entry(ioa_cfg->free_res_q.next,
5645 struct ipr_resource_entry, queue);
5646 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5647 ipr_init_res_entry(res);
5648 res->add_to_ml = 1;
5649 }
5650
5651 if (found)
5652 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5653 }
5654
5655 list_for_each_entry_safe(res, temp, &old_res, queue) {
5656 if (res->sdev) {
5657 res->del_from_ml = 1;
Brian King1121b792006-03-29 09:37:16 -06005658 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005659 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5660 } else {
5661 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5662 }
5663 }
5664
5665 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5666
5667 LEAVE;
5668 return IPR_RC_JOB_CONTINUE;
5669}
5670
5671/**
5672 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5673 * @ipr_cmd: ipr command struct
5674 *
5675 * This function sends a Query IOA Configuration command
5676 * to the adapter to retrieve the IOA configuration table.
5677 *
5678 * Return value:
5679 * IPR_RC_JOB_RETURN
5680 **/
5681static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5682{
5683 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5684 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5685 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5686 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5687
5688 ENTER;
5689 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5690 ucode_vpd->major_release, ucode_vpd->card_type,
5691 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5692 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5693 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5694
5695 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5696 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5697 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5698
5699 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5700 ioarcb->read_data_transfer_length =
5701 cpu_to_be32(sizeof(struct ipr_config_table));
5702
5703 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5704 ioadl->flags_and_data_len =
5705 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5706
5707 ipr_cmd->job_step = ipr_init_res_table;
5708
5709 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5710
5711 LEAVE;
5712 return IPR_RC_JOB_RETURN;
5713}
5714
5715/**
5716 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5717 * @ipr_cmd: ipr command struct
5718 *
5719 * This utility function sends an inquiry to the adapter.
5720 *
5721 * Return value:
5722 * none
5723 **/
5724static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5725 u32 dma_addr, u8 xfer_len)
5726{
5727 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5728 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5729
5730 ENTER;
5731 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5732 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5733
5734 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5735 ioarcb->cmd_pkt.cdb[1] = flags;
5736 ioarcb->cmd_pkt.cdb[2] = page;
5737 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5738
5739 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5740 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5741
5742 ioadl->address = cpu_to_be32(dma_addr);
5743 ioadl->flags_and_data_len =
5744 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5745
5746 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5747 LEAVE;
5748}
5749
5750/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06005751 * ipr_inquiry_page_supported - Is the given inquiry page supported
5752 * @page0: inquiry page 0 buffer
5753 * @page: page code.
5754 *
5755 * This function determines if the specified inquiry page is supported.
5756 *
5757 * Return value:
5758 * 1 if page is supported / 0 if not
5759 **/
5760static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5761{
5762 int i;
5763
5764 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5765 if (page0->page[i] == page)
5766 return 1;
5767
5768 return 0;
5769}
5770
5771/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005772 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5773 * @ipr_cmd: ipr command struct
5774 *
5775 * This function sends a Page 3 inquiry to the adapter
5776 * to retrieve software VPD information.
5777 *
5778 * Return value:
5779 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5780 **/
5781static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5782{
5783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005784 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5785
5786 ENTER;
5787
5788 if (!ipr_inquiry_page_supported(page0, 1))
5789 ioa_cfg->cache_state = CACHE_NONE;
5790
5791 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5792
5793 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5794 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5795 sizeof(struct ipr_inquiry_page3));
5796
5797 LEAVE;
5798 return IPR_RC_JOB_RETURN;
5799}
5800
5801/**
5802 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5803 * @ipr_cmd: ipr command struct
5804 *
5805 * This function sends a Page 0 inquiry to the adapter
5806 * to retrieve supported inquiry pages.
5807 *
5808 * Return value:
5809 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5810 **/
5811static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5812{
5813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005814 char type[5];
5815
5816 ENTER;
5817
5818 /* Grab the type out of the VPD and store it away */
5819 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5820 type[4] = '\0';
5821 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5822
brking@us.ibm.com62275042005-11-01 17:01:14 -06005823 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005824
brking@us.ibm.com62275042005-11-01 17:01:14 -06005825 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
5826 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
5827 sizeof(struct ipr_inquiry_page0));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005828
5829 LEAVE;
5830 return IPR_RC_JOB_RETURN;
5831}
5832
5833/**
5834 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
5835 * @ipr_cmd: ipr command struct
5836 *
5837 * This function sends a standard inquiry to the adapter.
5838 *
5839 * Return value:
5840 * IPR_RC_JOB_RETURN
5841 **/
5842static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
5843{
5844 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5845
5846 ENTER;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005847 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005848
5849 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
5850 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
5851 sizeof(struct ipr_ioa_vpd));
5852
5853 LEAVE;
5854 return IPR_RC_JOB_RETURN;
5855}
5856
5857/**
5858 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
5859 * @ipr_cmd: ipr command struct
5860 *
5861 * This function send an Identify Host Request Response Queue
5862 * command to establish the HRRQ with the adapter.
5863 *
5864 * Return value:
5865 * IPR_RC_JOB_RETURN
5866 **/
5867static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
5868{
5869 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5870 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5871
5872 ENTER;
5873 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
5874
5875 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
5876 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5877
5878 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5879 ioarcb->cmd_pkt.cdb[2] =
5880 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
5881 ioarcb->cmd_pkt.cdb[3] =
5882 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
5883 ioarcb->cmd_pkt.cdb[4] =
5884 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
5885 ioarcb->cmd_pkt.cdb[5] =
5886 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
5887 ioarcb->cmd_pkt.cdb[7] =
5888 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
5889 ioarcb->cmd_pkt.cdb[8] =
5890 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
5891
5892 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
5893
5894 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5895
5896 LEAVE;
5897 return IPR_RC_JOB_RETURN;
5898}
5899
5900/**
5901 * ipr_reset_timer_done - Adapter reset timer function
5902 * @ipr_cmd: ipr command struct
5903 *
5904 * Description: This function is used in adapter reset processing
5905 * for timing events. If the reset_cmd pointer in the IOA
5906 * config struct is not this adapter's we are doing nested
5907 * resets and fail_all_ops will take care of freeing the
5908 * command block.
5909 *
5910 * Return value:
5911 * none
5912 **/
5913static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
5914{
5915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5916 unsigned long lock_flags = 0;
5917
5918 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5919
5920 if (ioa_cfg->reset_cmd == ipr_cmd) {
5921 list_del(&ipr_cmd->queue);
5922 ipr_cmd->done(ipr_cmd);
5923 }
5924
5925 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5926}
5927
5928/**
5929 * ipr_reset_start_timer - Start a timer for adapter reset job
5930 * @ipr_cmd: ipr command struct
5931 * @timeout: timeout value
5932 *
5933 * Description: This function is used in adapter reset processing
5934 * for timing events. If the reset_cmd pointer in the IOA
5935 * config struct is not this adapter's we are doing nested
5936 * resets and fail_all_ops will take care of freeing the
5937 * command block.
5938 *
5939 * Return value:
5940 * none
5941 **/
5942static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
5943 unsigned long timeout)
5944{
5945 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5946 ipr_cmd->done = ipr_reset_ioa_job;
5947
5948 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5949 ipr_cmd->timer.expires = jiffies + timeout;
5950 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
5951 add_timer(&ipr_cmd->timer);
5952}
5953
5954/**
5955 * ipr_init_ioa_mem - Initialize ioa_cfg control block
5956 * @ioa_cfg: ioa cfg struct
5957 *
5958 * Return value:
5959 * nothing
5960 **/
5961static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
5962{
5963 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
5964
5965 /* Initialize Host RRQ pointers */
5966 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
5967 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
5968 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5969 ioa_cfg->toggle_bit = 1;
5970
5971 /* Zero out config table */
5972 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
5973}
5974
5975/**
5976 * ipr_reset_enable_ioa - Enable the IOA following a reset.
5977 * @ipr_cmd: ipr command struct
5978 *
5979 * This function reinitializes some control blocks and
5980 * enables destructive diagnostics on the adapter.
5981 *
5982 * Return value:
5983 * IPR_RC_JOB_RETURN
5984 **/
5985static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
5986{
5987 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5988 volatile u32 int_reg;
5989
5990 ENTER;
5991 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
5992 ipr_init_ioa_mem(ioa_cfg);
5993
5994 ioa_cfg->allow_interrupts = 1;
5995 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5996
5997 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5998 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
5999 ioa_cfg->regs.clr_interrupt_mask_reg);
6000 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6001 return IPR_RC_JOB_CONTINUE;
6002 }
6003
6004 /* Enable destructive diagnostics on IOA */
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06006005 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006006
6007 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6008 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6009
6010 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6011
6012 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6013 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
6014 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6015 ipr_cmd->done = ipr_reset_ioa_job;
6016 add_timer(&ipr_cmd->timer);
6017 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6018
6019 LEAVE;
6020 return IPR_RC_JOB_RETURN;
6021}
6022
6023/**
6024 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6025 * @ipr_cmd: ipr command struct
6026 *
6027 * This function is invoked when an adapter dump has run out
6028 * of processing time.
6029 *
6030 * Return value:
6031 * IPR_RC_JOB_CONTINUE
6032 **/
6033static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6034{
6035 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6036
6037 if (ioa_cfg->sdt_state == GET_DUMP)
6038 ioa_cfg->sdt_state = ABORT_DUMP;
6039
6040 ipr_cmd->job_step = ipr_reset_alert;
6041
6042 return IPR_RC_JOB_CONTINUE;
6043}
6044
6045/**
6046 * ipr_unit_check_no_data - Log a unit check/no data error log
6047 * @ioa_cfg: ioa config struct
6048 *
6049 * Logs an error indicating the adapter unit checked, but for some
6050 * reason, we were unable to fetch the unit check buffer.
6051 *
6052 * Return value:
6053 * nothing
6054 **/
6055static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6056{
6057 ioa_cfg->errors_logged++;
6058 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6059}
6060
6061/**
6062 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6063 * @ioa_cfg: ioa config struct
6064 *
6065 * Fetches the unit check buffer from the adapter by clocking the data
6066 * through the mailbox register.
6067 *
6068 * Return value:
6069 * nothing
6070 **/
6071static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6072{
6073 unsigned long mailbox;
6074 struct ipr_hostrcb *hostrcb;
6075 struct ipr_uc_sdt sdt;
6076 int rc, length;
6077
6078 mailbox = readl(ioa_cfg->ioa_mailbox);
6079
6080 if (!ipr_sdt_is_fmt2(mailbox)) {
6081 ipr_unit_check_no_data(ioa_cfg);
6082 return;
6083 }
6084
6085 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6086 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6087 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6088
6089 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6090 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6091 ipr_unit_check_no_data(ioa_cfg);
6092 return;
6093 }
6094
6095 /* Find length of the first sdt entry (UC buffer) */
6096 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6097 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6098
6099 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6100 struct ipr_hostrcb, queue);
6101 list_del(&hostrcb->queue);
6102 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6103
6104 rc = ipr_get_ldump_data_section(ioa_cfg,
6105 be32_to_cpu(sdt.entry[0].bar_str_offset),
6106 (__be32 *)&hostrcb->hcam,
6107 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6108
6109 if (!rc)
6110 ipr_handle_log_data(ioa_cfg, hostrcb);
6111 else
6112 ipr_unit_check_no_data(ioa_cfg);
6113
6114 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6115}
6116
6117/**
6118 * ipr_reset_restore_cfg_space - Restore PCI config space.
6119 * @ipr_cmd: ipr command struct
6120 *
6121 * Description: This function restores the saved PCI config space of
6122 * the adapter, fails all outstanding ops back to the callers, and
6123 * fetches the dump/unit check if applicable to this reset.
6124 *
6125 * Return value:
6126 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6127 **/
6128static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6129{
6130 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6131 int rc;
6132
6133 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07006134 pci_unblock_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006135 rc = pci_restore_state(ioa_cfg->pdev);
6136
6137 if (rc != PCIBIOS_SUCCESSFUL) {
6138 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6139 return IPR_RC_JOB_CONTINUE;
6140 }
6141
6142 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6143 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6144 return IPR_RC_JOB_CONTINUE;
6145 }
6146
6147 ipr_fail_all_ops(ioa_cfg);
6148
6149 if (ioa_cfg->ioa_unit_checked) {
6150 ioa_cfg->ioa_unit_checked = 0;
6151 ipr_get_unit_check_buffer(ioa_cfg);
6152 ipr_cmd->job_step = ipr_reset_alert;
6153 ipr_reset_start_timer(ipr_cmd, 0);
6154 return IPR_RC_JOB_RETURN;
6155 }
6156
6157 if (ioa_cfg->in_ioa_bringdown) {
6158 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6159 } else {
6160 ipr_cmd->job_step = ipr_reset_enable_ioa;
6161
6162 if (GET_DUMP == ioa_cfg->sdt_state) {
6163 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6164 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6165 schedule_work(&ioa_cfg->work_q);
6166 return IPR_RC_JOB_RETURN;
6167 }
6168 }
6169
6170 ENTER;
6171 return IPR_RC_JOB_CONTINUE;
6172}
6173
6174/**
6175 * ipr_reset_start_bist - Run BIST on the adapter.
6176 * @ipr_cmd: ipr command struct
6177 *
6178 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6179 *
6180 * Return value:
6181 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6182 **/
6183static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6184{
6185 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6186 int rc;
6187
6188 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07006189 pci_block_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006190 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6191
6192 if (rc != PCIBIOS_SUCCESSFUL) {
6193 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6194 rc = IPR_RC_JOB_CONTINUE;
6195 } else {
6196 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6197 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6198 rc = IPR_RC_JOB_RETURN;
6199 }
6200
6201 LEAVE;
6202 return rc;
6203}
6204
6205/**
6206 * ipr_reset_allowed - Query whether or not IOA can be reset
6207 * @ioa_cfg: ioa config struct
6208 *
6209 * Return value:
6210 * 0 if reset not allowed / non-zero if reset is allowed
6211 **/
6212static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6213{
6214 volatile u32 temp_reg;
6215
6216 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6217 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6218}
6219
6220/**
6221 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6222 * @ipr_cmd: ipr command struct
6223 *
6224 * Description: This function waits for adapter permission to run BIST,
6225 * then runs BIST. If the adapter does not give permission after a
6226 * reasonable time, we will reset the adapter anyway. The impact of
6227 * resetting the adapter without warning the adapter is the risk of
6228 * losing the persistent error log on the adapter. If the adapter is
6229 * reset while it is writing to the flash on the adapter, the flash
6230 * segment will have bad ECC and be zeroed.
6231 *
6232 * Return value:
6233 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6234 **/
6235static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6236{
6237 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6238 int rc = IPR_RC_JOB_RETURN;
6239
6240 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6241 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6242 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6243 } else {
6244 ipr_cmd->job_step = ipr_reset_start_bist;
6245 rc = IPR_RC_JOB_CONTINUE;
6246 }
6247
6248 return rc;
6249}
6250
6251/**
6252 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6253 * @ipr_cmd: ipr command struct
6254 *
6255 * Description: This function alerts the adapter that it will be reset.
6256 * If memory space is not currently enabled, proceed directly
6257 * to running BIST on the adapter. The timer must always be started
6258 * so we guarantee we do not run BIST from ipr_isr.
6259 *
6260 * Return value:
6261 * IPR_RC_JOB_RETURN
6262 **/
6263static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6264{
6265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6266 u16 cmd_reg;
6267 int rc;
6268
6269 ENTER;
6270 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6271
6272 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6273 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6274 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6275 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6276 } else {
6277 ipr_cmd->job_step = ipr_reset_start_bist;
6278 }
6279
6280 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6281 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6282
6283 LEAVE;
6284 return IPR_RC_JOB_RETURN;
6285}
6286
6287/**
6288 * ipr_reset_ucode_download_done - Microcode download completion
6289 * @ipr_cmd: ipr command struct
6290 *
6291 * Description: This function unmaps the microcode download buffer.
6292 *
6293 * Return value:
6294 * IPR_RC_JOB_CONTINUE
6295 **/
6296static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6297{
6298 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6299 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6300
6301 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6302 sglist->num_sg, DMA_TO_DEVICE);
6303
6304 ipr_cmd->job_step = ipr_reset_alert;
6305 return IPR_RC_JOB_CONTINUE;
6306}
6307
6308/**
6309 * ipr_reset_ucode_download - Download microcode to the adapter
6310 * @ipr_cmd: ipr command struct
6311 *
6312 * Description: This function checks to see if it there is microcode
6313 * to download to the adapter. If there is, a download is performed.
6314 *
6315 * Return value:
6316 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6317 **/
6318static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6319{
6320 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6321 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6322
6323 ENTER;
6324 ipr_cmd->job_step = ipr_reset_alert;
6325
6326 if (!sglist)
6327 return IPR_RC_JOB_CONTINUE;
6328
6329 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6330 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6331 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6332 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6333 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6334 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6335 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6336
brking@us.ibm.com12baa422005-11-01 17:01:27 -06006337 ipr_build_ucode_ioadl(ipr_cmd, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006338 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6339
6340 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6341 IPR_WRITE_BUFFER_TIMEOUT);
6342
6343 LEAVE;
6344 return IPR_RC_JOB_RETURN;
6345}
6346
6347/**
6348 * ipr_reset_shutdown_ioa - Shutdown the adapter
6349 * @ipr_cmd: ipr command struct
6350 *
6351 * Description: This function issues an adapter shutdown of the
6352 * specified type to the specified adapter as part of the
6353 * adapter reset job.
6354 *
6355 * Return value:
6356 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6357 **/
6358static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6359{
6360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6361 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6362 unsigned long timeout;
6363 int rc = IPR_RC_JOB_CONTINUE;
6364
6365 ENTER;
6366 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6367 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6368 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6369 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6370 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6371
6372 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6373 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6374 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6375 timeout = IPR_INTERNAL_TIMEOUT;
6376 else
6377 timeout = IPR_SHUTDOWN_TIMEOUT;
6378
6379 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6380
6381 rc = IPR_RC_JOB_RETURN;
6382 ipr_cmd->job_step = ipr_reset_ucode_download;
6383 } else
6384 ipr_cmd->job_step = ipr_reset_alert;
6385
6386 LEAVE;
6387 return rc;
6388}
6389
6390/**
6391 * ipr_reset_ioa_job - Adapter reset job
6392 * @ipr_cmd: ipr command struct
6393 *
6394 * Description: This function is the job router for the adapter reset job.
6395 *
6396 * Return value:
6397 * none
6398 **/
6399static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6400{
6401 u32 rc, ioasc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006402 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6403
6404 do {
6405 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6406
6407 if (ioa_cfg->reset_cmd != ipr_cmd) {
6408 /*
6409 * We are doing nested adapter resets and this is
6410 * not the current reset job.
6411 */
6412 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6413 return;
6414 }
6415
6416 if (IPR_IOASC_SENSE_KEY(ioasc)) {
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06006417 rc = ipr_cmd->job_step_failed(ipr_cmd);
6418 if (rc == IPR_RC_JOB_RETURN)
6419 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006420 }
6421
6422 ipr_reinit_ipr_cmnd(ipr_cmd);
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06006423 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006424 rc = ipr_cmd->job_step(ipr_cmd);
6425 } while(rc == IPR_RC_JOB_CONTINUE);
6426}
6427
6428/**
6429 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6430 * @ioa_cfg: ioa config struct
6431 * @job_step: first job step of reset job
6432 * @shutdown_type: shutdown type
6433 *
6434 * Description: This function will initiate the reset of the given adapter
6435 * starting at the selected job step.
6436 * If the caller needs to wait on the completion of the reset,
6437 * the caller must sleep on the reset_wait_q.
6438 *
6439 * Return value:
6440 * none
6441 **/
6442static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6443 int (*job_step) (struct ipr_cmnd *),
6444 enum ipr_shutdown_type shutdown_type)
6445{
6446 struct ipr_cmnd *ipr_cmd;
6447
6448 ioa_cfg->in_reset_reload = 1;
6449 ioa_cfg->allow_cmds = 0;
6450 scsi_block_requests(ioa_cfg->host);
6451
6452 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6453 ioa_cfg->reset_cmd = ipr_cmd;
6454 ipr_cmd->job_step = job_step;
6455 ipr_cmd->u.shutdown_type = shutdown_type;
6456
6457 ipr_reset_ioa_job(ipr_cmd);
6458}
6459
6460/**
6461 * ipr_initiate_ioa_reset - Initiate an adapter reset
6462 * @ioa_cfg: ioa config struct
6463 * @shutdown_type: shutdown type
6464 *
6465 * Description: This function will initiate the reset of the given adapter.
6466 * If the caller needs to wait on the completion of the reset,
6467 * the caller must sleep on the reset_wait_q.
6468 *
6469 * Return value:
6470 * none
6471 **/
6472static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6473 enum ipr_shutdown_type shutdown_type)
6474{
6475 if (ioa_cfg->ioa_is_dead)
6476 return;
6477
6478 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6479 ioa_cfg->sdt_state = ABORT_DUMP;
6480
6481 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6482 dev_err(&ioa_cfg->pdev->dev,
6483 "IOA taken offline - error recovery failed\n");
6484
6485 ioa_cfg->reset_retries = 0;
6486 ioa_cfg->ioa_is_dead = 1;
6487
6488 if (ioa_cfg->in_ioa_bringdown) {
6489 ioa_cfg->reset_cmd = NULL;
6490 ioa_cfg->in_reset_reload = 0;
6491 ipr_fail_all_ops(ioa_cfg);
6492 wake_up_all(&ioa_cfg->reset_wait_q);
6493
6494 spin_unlock_irq(ioa_cfg->host->host_lock);
6495 scsi_unblock_requests(ioa_cfg->host);
6496 spin_lock_irq(ioa_cfg->host->host_lock);
6497 return;
6498 } else {
6499 ioa_cfg->in_ioa_bringdown = 1;
6500 shutdown_type = IPR_SHUTDOWN_NONE;
6501 }
6502 }
6503
6504 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6505 shutdown_type);
6506}
6507
6508/**
Linas Vepstasf8a88b192006-02-03 16:52:42 -06006509 * ipr_reset_freeze - Hold off all I/O activity
6510 * @ipr_cmd: ipr command struct
6511 *
6512 * Description: If the PCI slot is frozen, hold off all I/O
6513 * activity; then, as soon as the slot is available again,
6514 * initiate an adapter reset.
6515 */
6516static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6517{
6518 /* Disallow new interrupts, avoid loop */
6519 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6520 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6521 ipr_cmd->done = ipr_reset_ioa_job;
6522 return IPR_RC_JOB_RETURN;
6523}
6524
6525/**
6526 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6527 * @pdev: PCI device struct
6528 *
6529 * Description: This routine is called to tell us that the PCI bus
6530 * is down. Can't do anything here, except put the device driver
6531 * into a holding pattern, waiting for the PCI bus to come back.
6532 */
6533static void ipr_pci_frozen(struct pci_dev *pdev)
6534{
6535 unsigned long flags = 0;
6536 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6537
6538 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6539 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6540 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6541}
6542
6543/**
6544 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6545 * @pdev: PCI device struct
6546 *
6547 * Description: This routine is called by the pci error recovery
6548 * code after the PCI slot has been reset, just before we
6549 * should resume normal operations.
6550 */
6551static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6552{
6553 unsigned long flags = 0;
6554 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6555
6556 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6557 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6558 IPR_SHUTDOWN_NONE);
6559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6560 return PCI_ERS_RESULT_RECOVERED;
6561}
6562
6563/**
6564 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6565 * @pdev: PCI device struct
6566 *
6567 * Description: This routine is called when the PCI bus has
6568 * permanently failed.
6569 */
6570static void ipr_pci_perm_failure(struct pci_dev *pdev)
6571{
6572 unsigned long flags = 0;
6573 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6574
6575 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6576 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6577 ioa_cfg->sdt_state = ABORT_DUMP;
6578 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6579 ioa_cfg->in_ioa_bringdown = 1;
6580 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6582}
6583
6584/**
6585 * ipr_pci_error_detected - Called when a PCI error is detected.
6586 * @pdev: PCI device struct
6587 * @state: PCI channel state
6588 *
6589 * Description: Called when a PCI error is detected.
6590 *
6591 * Return value:
6592 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6593 */
6594static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6595 pci_channel_state_t state)
6596{
6597 switch (state) {
6598 case pci_channel_io_frozen:
6599 ipr_pci_frozen(pdev);
6600 return PCI_ERS_RESULT_NEED_RESET;
6601 case pci_channel_io_perm_failure:
6602 ipr_pci_perm_failure(pdev);
6603 return PCI_ERS_RESULT_DISCONNECT;
6604 break;
6605 default:
6606 break;
6607 }
6608 return PCI_ERS_RESULT_NEED_RESET;
6609}
6610
6611/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07006612 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6613 * @ioa_cfg: ioa cfg struct
6614 *
6615 * Description: This is the second phase of adapter intialization
6616 * This function takes care of initilizing the adapter to the point
6617 * where it can accept new commands.
6618
6619 * Return value:
6620 * 0 on sucess / -EIO on failure
6621 **/
6622static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6623{
6624 int rc = 0;
6625 unsigned long host_lock_flags = 0;
6626
6627 ENTER;
6628 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6629 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06006630 if (ioa_cfg->needs_hard_reset) {
6631 ioa_cfg->needs_hard_reset = 0;
6632 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6633 } else
6634 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6635 IPR_SHUTDOWN_NONE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006636
6637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6638 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6639 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6640
6641 if (ioa_cfg->ioa_is_dead) {
6642 rc = -EIO;
6643 } else if (ipr_invalid_adapter(ioa_cfg)) {
6644 if (!ipr_testmode)
6645 rc = -EIO;
6646
6647 dev_err(&ioa_cfg->pdev->dev,
6648 "Adapter not supported in this hardware configuration.\n");
6649 }
6650
6651 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6652
6653 LEAVE;
6654 return rc;
6655}
6656
6657/**
6658 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6659 * @ioa_cfg: ioa config struct
6660 *
6661 * Return value:
6662 * none
6663 **/
6664static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6665{
6666 int i;
6667
6668 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6669 if (ioa_cfg->ipr_cmnd_list[i])
6670 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6671 ioa_cfg->ipr_cmnd_list[i],
6672 ioa_cfg->ipr_cmnd_list_dma[i]);
6673
6674 ioa_cfg->ipr_cmnd_list[i] = NULL;
6675 }
6676
6677 if (ioa_cfg->ipr_cmd_pool)
6678 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6679
6680 ioa_cfg->ipr_cmd_pool = NULL;
6681}
6682
6683/**
6684 * ipr_free_mem - Frees memory allocated for an adapter
6685 * @ioa_cfg: ioa cfg struct
6686 *
6687 * Return value:
6688 * nothing
6689 **/
6690static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6691{
6692 int i;
6693
6694 kfree(ioa_cfg->res_entries);
6695 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6696 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6697 ipr_free_cmd_blks(ioa_cfg);
6698 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6699 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6700 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6701 ioa_cfg->cfg_table,
6702 ioa_cfg->cfg_table_dma);
6703
6704 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6705 pci_free_consistent(ioa_cfg->pdev,
6706 sizeof(struct ipr_hostrcb),
6707 ioa_cfg->hostrcb[i],
6708 ioa_cfg->hostrcb_dma[i]);
6709 }
6710
6711 ipr_free_dump(ioa_cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006712 kfree(ioa_cfg->trace);
6713}
6714
6715/**
6716 * ipr_free_all_resources - Free all allocated resources for an adapter.
6717 * @ipr_cmd: ipr command struct
6718 *
6719 * This function frees all allocated resources for the
6720 * specified adapter.
6721 *
6722 * Return value:
6723 * none
6724 **/
6725static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6726{
6727 struct pci_dev *pdev = ioa_cfg->pdev;
6728
6729 ENTER;
6730 free_irq(pdev->irq, ioa_cfg);
6731 iounmap(ioa_cfg->hdw_dma_regs);
6732 pci_release_regions(pdev);
6733 ipr_free_mem(ioa_cfg);
6734 scsi_host_put(ioa_cfg->host);
6735 pci_disable_device(pdev);
6736 LEAVE;
6737}
6738
6739/**
6740 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6741 * @ioa_cfg: ioa config struct
6742 *
6743 * Return value:
6744 * 0 on success / -ENOMEM on allocation failure
6745 **/
6746static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6747{
6748 struct ipr_cmnd *ipr_cmd;
6749 struct ipr_ioarcb *ioarcb;
6750 dma_addr_t dma_addr;
6751 int i;
6752
6753 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6754 sizeof(struct ipr_cmnd), 8, 0);
6755
6756 if (!ioa_cfg->ipr_cmd_pool)
6757 return -ENOMEM;
6758
6759 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6760 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
6761
6762 if (!ipr_cmd) {
6763 ipr_free_cmd_blks(ioa_cfg);
6764 return -ENOMEM;
6765 }
6766
6767 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6768 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6769 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6770
6771 ioarcb = &ipr_cmd->ioarcb;
6772 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6773 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6774 ioarcb->write_ioadl_addr =
6775 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6776 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6777 ioarcb->ioasa_host_pci_addr =
6778 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6779 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6780 ipr_cmd->cmd_index = i;
6781 ipr_cmd->ioa_cfg = ioa_cfg;
6782 ipr_cmd->sense_buffer_dma = dma_addr +
6783 offsetof(struct ipr_cmnd, sense_buffer);
6784
6785 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6786 }
6787
6788 return 0;
6789}
6790
6791/**
6792 * ipr_alloc_mem - Allocate memory for an adapter
6793 * @ioa_cfg: ioa config struct
6794 *
6795 * Return value:
6796 * 0 on success / non-zero for error
6797 **/
6798static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6799{
6800 struct pci_dev *pdev = ioa_cfg->pdev;
6801 int i, rc = -ENOMEM;
6802
6803 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006804 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006805 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
6806
6807 if (!ioa_cfg->res_entries)
6808 goto out;
6809
Linus Torvalds1da177e2005-04-16 15:20:36 -07006810 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
6811 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
6812
6813 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
6814 sizeof(struct ipr_misc_cbs),
6815 &ioa_cfg->vpd_cbs_dma);
6816
6817 if (!ioa_cfg->vpd_cbs)
6818 goto out_free_res_entries;
6819
6820 if (ipr_alloc_cmd_blks(ioa_cfg))
6821 goto out_free_vpd_cbs;
6822
6823 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
6824 sizeof(u32) * IPR_NUM_CMD_BLKS,
6825 &ioa_cfg->host_rrq_dma);
6826
6827 if (!ioa_cfg->host_rrq)
6828 goto out_ipr_free_cmd_blocks;
6829
6830 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
6831 sizeof(struct ipr_config_table),
6832 &ioa_cfg->cfg_table_dma);
6833
6834 if (!ioa_cfg->cfg_table)
6835 goto out_free_host_rrq;
6836
6837 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6838 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
6839 sizeof(struct ipr_hostrcb),
6840 &ioa_cfg->hostrcb_dma[i]);
6841
6842 if (!ioa_cfg->hostrcb[i])
6843 goto out_free_hostrcb_dma;
6844
6845 ioa_cfg->hostrcb[i]->hostrcb_dma =
6846 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
6847 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
6848 }
6849
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006850 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006851 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
6852
6853 if (!ioa_cfg->trace)
6854 goto out_free_hostrcb_dma;
6855
Linus Torvalds1da177e2005-04-16 15:20:36 -07006856 rc = 0;
6857out:
6858 LEAVE;
6859 return rc;
6860
6861out_free_hostrcb_dma:
6862 while (i-- > 0) {
6863 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
6864 ioa_cfg->hostrcb[i],
6865 ioa_cfg->hostrcb_dma[i]);
6866 }
6867 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
6868 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
6869out_free_host_rrq:
6870 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6871 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6872out_ipr_free_cmd_blocks:
6873 ipr_free_cmd_blks(ioa_cfg);
6874out_free_vpd_cbs:
6875 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
6876 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6877out_free_res_entries:
6878 kfree(ioa_cfg->res_entries);
6879 goto out;
6880}
6881
6882/**
6883 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
6884 * @ioa_cfg: ioa config struct
6885 *
6886 * Return value:
6887 * none
6888 **/
6889static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
6890{
6891 int i;
6892
6893 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6894 ioa_cfg->bus_attr[i].bus = i;
6895 ioa_cfg->bus_attr[i].qas_enabled = 0;
6896 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
6897 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
6898 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
6899 else
6900 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
6901 }
6902}
6903
6904/**
6905 * ipr_init_ioa_cfg - Initialize IOA config struct
6906 * @ioa_cfg: ioa config struct
6907 * @host: scsi host struct
6908 * @pdev: PCI dev struct
6909 *
6910 * Return value:
6911 * none
6912 **/
6913static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
6914 struct Scsi_Host *host, struct pci_dev *pdev)
6915{
6916 const struct ipr_interrupt_offsets *p;
6917 struct ipr_interrupts *t;
6918 void __iomem *base;
6919
6920 ioa_cfg->host = host;
6921 ioa_cfg->pdev = pdev;
6922 ioa_cfg->log_level = ipr_log_level;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06006923 ioa_cfg->doorbell = IPR_DOORBELL;
brking@us.ibm.com32d29772005-11-01 17:02:01 -06006924 if (!ipr_auto_create)
6925 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006926 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
6927 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
6928 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
6929 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
6930 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
6931 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
6932 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
6933 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
6934
6935 INIT_LIST_HEAD(&ioa_cfg->free_q);
6936 INIT_LIST_HEAD(&ioa_cfg->pending_q);
6937 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
6938 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
6939 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
6940 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
6941 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
6942 init_waitqueue_head(&ioa_cfg->reset_wait_q);
6943 ioa_cfg->sdt_state = INACTIVE;
brking@us.ibm.com62275042005-11-01 17:01:14 -06006944 if (ipr_enable_cache)
6945 ioa_cfg->cache_state = CACHE_ENABLED;
6946 else
6947 ioa_cfg->cache_state = CACHE_DISABLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006948
6949 ipr_initialize_bus_attr(ioa_cfg);
6950
6951 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
6952 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
6953 host->max_channel = IPR_MAX_BUS_TO_SCAN;
6954 host->unique_id = host->host_no;
6955 host->max_cmd_len = IPR_MAX_CDB_LEN;
6956 pci_set_drvdata(pdev, ioa_cfg);
6957
6958 p = &ioa_cfg->chip_cfg->regs;
6959 t = &ioa_cfg->regs;
6960 base = ioa_cfg->hdw_dma_regs;
6961
6962 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
6963 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
6964 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
6965 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
6966 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
6967 t->ioarrin_reg = base + p->ioarrin_reg;
6968 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
6969 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
6970 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
6971}
6972
6973/**
6974 * ipr_get_chip_cfg - Find adapter chip configuration
6975 * @dev_id: PCI device id struct
6976 *
6977 * Return value:
6978 * ptr to chip config on success / NULL on failure
6979 **/
6980static const struct ipr_chip_cfg_t * __devinit
6981ipr_get_chip_cfg(const struct pci_device_id *dev_id)
6982{
6983 int i;
6984
6985 if (dev_id->driver_data)
6986 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
6987
6988 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
6989 if (ipr_chip[i].vendor == dev_id->vendor &&
6990 ipr_chip[i].device == dev_id->device)
6991 return ipr_chip[i].cfg;
6992 return NULL;
6993}
6994
6995/**
6996 * ipr_probe_ioa - Allocates memory and does first stage of initialization
6997 * @pdev: PCI device struct
6998 * @dev_id: PCI device id struct
6999 *
7000 * Return value:
7001 * 0 on success / non-zero on failure
7002 **/
7003static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7004 const struct pci_device_id *dev_id)
7005{
7006 struct ipr_ioa_cfg *ioa_cfg;
7007 struct Scsi_Host *host;
7008 unsigned long ipr_regs_pci;
7009 void __iomem *ipr_regs;
Eric Sesterhenna2a65a32006-09-25 16:59:07 -07007010 int rc = PCIBIOS_SUCCESSFUL;
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06007011 volatile u32 mask, uproc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007012
7013 ENTER;
7014
7015 if ((rc = pci_enable_device(pdev))) {
7016 dev_err(&pdev->dev, "Cannot enable adapter\n");
7017 goto out;
7018 }
7019
7020 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7021
7022 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7023
7024 if (!host) {
7025 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7026 rc = -ENOMEM;
7027 goto out_disable;
7028 }
7029
7030 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7031 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
Brian King35a39692006-09-25 12:39:20 -05007032 host->transportt = &ipr_transport_template;
7033 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7034 sata_port_info.flags, &ipr_sata_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007035
7036 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7037
7038 if (!ioa_cfg->chip_cfg) {
7039 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7040 dev_id->vendor, dev_id->device);
7041 goto out_scsi_host_put;
7042 }
7043
7044 ipr_regs_pci = pci_resource_start(pdev, 0);
7045
7046 rc = pci_request_regions(pdev, IPR_NAME);
7047 if (rc < 0) {
7048 dev_err(&pdev->dev,
7049 "Couldn't register memory range of registers\n");
7050 goto out_scsi_host_put;
7051 }
7052
7053 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7054
7055 if (!ipr_regs) {
7056 dev_err(&pdev->dev,
7057 "Couldn't map memory range of registers\n");
7058 rc = -ENOMEM;
7059 goto out_release_regions;
7060 }
7061
7062 ioa_cfg->hdw_dma_regs = ipr_regs;
7063 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7064 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7065
7066 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7067
7068 pci_set_master(pdev);
7069
7070 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7071 if (rc < 0) {
7072 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7073 goto cleanup_nomem;
7074 }
7075
7076 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7077 ioa_cfg->chip_cfg->cache_line_size);
7078
7079 if (rc != PCIBIOS_SUCCESSFUL) {
7080 dev_err(&pdev->dev, "Write of cache line size failed\n");
7081 rc = -EIO;
7082 goto cleanup_nomem;
7083 }
7084
7085 /* Save away PCI config space for use following IOA reset */
7086 rc = pci_save_state(pdev);
7087
7088 if (rc != PCIBIOS_SUCCESSFUL) {
7089 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7090 rc = -EIO;
7091 goto cleanup_nomem;
7092 }
7093
7094 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7095 goto cleanup_nomem;
7096
7097 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7098 goto cleanup_nomem;
7099
7100 rc = ipr_alloc_mem(ioa_cfg);
7101 if (rc < 0) {
7102 dev_err(&pdev->dev,
7103 "Couldn't allocate enough memory for device driver!\n");
7104 goto cleanup_nomem;
7105 }
7106
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06007107 /*
7108 * If HRRQ updated interrupt is not masked, or reset alert is set,
7109 * the card is in an unknown state and needs a hard reset
7110 */
7111 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7112 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7113 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7114 ioa_cfg->needs_hard_reset = 1;
7115
Linus Torvalds1da177e2005-04-16 15:20:36 -07007116 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
Thomas Gleixner1d6f3592006-07-01 19:29:42 -07007117 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007118
7119 if (rc) {
7120 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7121 pdev->irq, rc);
7122 goto cleanup_nolog;
7123 }
7124
7125 spin_lock(&ipr_driver_lock);
7126 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7127 spin_unlock(&ipr_driver_lock);
7128
7129 LEAVE;
7130out:
7131 return rc;
7132
7133cleanup_nolog:
7134 ipr_free_mem(ioa_cfg);
7135cleanup_nomem:
7136 iounmap(ipr_regs);
7137out_release_regions:
7138 pci_release_regions(pdev);
7139out_scsi_host_put:
7140 scsi_host_put(host);
7141out_disable:
7142 pci_disable_device(pdev);
7143 goto out;
7144}
7145
7146/**
7147 * ipr_scan_vsets - Scans for VSET devices
7148 * @ioa_cfg: ioa config struct
7149 *
7150 * Description: Since the VSET resources do not follow SAM in that we can have
7151 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7152 *
7153 * Return value:
7154 * none
7155 **/
7156static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7157{
7158 int target, lun;
7159
7160 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7161 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7162 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7163}
7164
7165/**
7166 * ipr_initiate_ioa_bringdown - Bring down an adapter
7167 * @ioa_cfg: ioa config struct
7168 * @shutdown_type: shutdown type
7169 *
7170 * Description: This function will initiate bringing down the adapter.
7171 * This consists of issuing an IOA shutdown to the adapter
7172 * to flush the cache, and running BIST.
7173 * If the caller needs to wait on the completion of the reset,
7174 * the caller must sleep on the reset_wait_q.
7175 *
7176 * Return value:
7177 * none
7178 **/
7179static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7180 enum ipr_shutdown_type shutdown_type)
7181{
7182 ENTER;
7183 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7184 ioa_cfg->sdt_state = ABORT_DUMP;
7185 ioa_cfg->reset_retries = 0;
7186 ioa_cfg->in_ioa_bringdown = 1;
7187 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7188 LEAVE;
7189}
7190
7191/**
7192 * __ipr_remove - Remove a single adapter
7193 * @pdev: pci device struct
7194 *
7195 * Adapter hot plug remove entry point.
7196 *
7197 * Return value:
7198 * none
7199 **/
7200static void __ipr_remove(struct pci_dev *pdev)
7201{
7202 unsigned long host_lock_flags = 0;
7203 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7204 ENTER;
7205
7206 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7207 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7208
7209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7210 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
brking@us.ibm.com 5cbf5ea2005-05-02 19:50:47 -05007211 flush_scheduled_work();
Linus Torvalds1da177e2005-04-16 15:20:36 -07007212 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7213
7214 spin_lock(&ipr_driver_lock);
7215 list_del(&ioa_cfg->queue);
7216 spin_unlock(&ipr_driver_lock);
7217
7218 if (ioa_cfg->sdt_state == ABORT_DUMP)
7219 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7220 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7221
7222 ipr_free_all_resources(ioa_cfg);
7223
7224 LEAVE;
7225}
7226
7227/**
7228 * ipr_remove - IOA hot plug remove entry point
7229 * @pdev: pci device struct
7230 *
7231 * Adapter hot plug remove entry point.
7232 *
7233 * Return value:
7234 * none
7235 **/
7236static void ipr_remove(struct pci_dev *pdev)
7237{
7238 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7239
7240 ENTER;
7241
Linus Torvalds1da177e2005-04-16 15:20:36 -07007242 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7243 &ipr_trace_attr);
7244 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7245 &ipr_dump_attr);
7246 scsi_remove_host(ioa_cfg->host);
7247
7248 __ipr_remove(pdev);
7249
7250 LEAVE;
7251}
7252
7253/**
7254 * ipr_probe - Adapter hot plug add entry point
7255 *
7256 * Return value:
7257 * 0 on success / non-zero on failure
7258 **/
7259static int __devinit ipr_probe(struct pci_dev *pdev,
7260 const struct pci_device_id *dev_id)
7261{
7262 struct ipr_ioa_cfg *ioa_cfg;
7263 int rc;
7264
7265 rc = ipr_probe_ioa(pdev, dev_id);
7266
7267 if (rc)
7268 return rc;
7269
7270 ioa_cfg = pci_get_drvdata(pdev);
7271 rc = ipr_probe_ioa_part2(ioa_cfg);
7272
7273 if (rc) {
7274 __ipr_remove(pdev);
7275 return rc;
7276 }
7277
7278 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7279
7280 if (rc) {
7281 __ipr_remove(pdev);
7282 return rc;
7283 }
7284
7285 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7286 &ipr_trace_attr);
7287
7288 if (rc) {
7289 scsi_remove_host(ioa_cfg->host);
7290 __ipr_remove(pdev);
7291 return rc;
7292 }
7293
7294 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7295 &ipr_dump_attr);
7296
7297 if (rc) {
7298 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7299 &ipr_trace_attr);
7300 scsi_remove_host(ioa_cfg->host);
7301 __ipr_remove(pdev);
7302 return rc;
7303 }
7304
7305 scsi_scan_host(ioa_cfg->host);
7306 ipr_scan_vsets(ioa_cfg);
7307 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7308 ioa_cfg->allow_ml_add_del = 1;
brking@us.ibm.com11cd8f12005-11-01 17:00:11 -06007309 ioa_cfg->host->max_channel = IPR_VSET_BUS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007310 schedule_work(&ioa_cfg->work_q);
7311 return 0;
7312}
7313
7314/**
7315 * ipr_shutdown - Shutdown handler.
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007316 * @pdev: pci device struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07007317 *
7318 * This function is invoked upon system shutdown/reboot. It will issue
7319 * an adapter shutdown to the adapter to flush the write cache.
7320 *
7321 * Return value:
7322 * none
7323 **/
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007324static void ipr_shutdown(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007325{
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007326 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007327 unsigned long lock_flags = 0;
7328
7329 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7330 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7332 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7333}
7334
7335static struct pci_device_id ipr_pci_table[] __devinitdata = {
7336 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7337 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
7338 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7339 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7340 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
7341 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7342 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7343 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
7344 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7345 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7346 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
7347 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7348 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7349 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
7350 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7351 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7352 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
7353 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7354 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7355 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
7356 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06007357 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7358 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B,
7359 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7360 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7361 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
7362 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7363 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7364 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
7365 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7366 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7367 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
7368 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7369 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7370 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
7371 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07007372 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7373 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
7374 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
7375 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7376 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
7377 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06007378 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7379 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F,
7380 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07007381 { }
7382};
7383MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7384
Linas Vepstasf8a88b192006-02-03 16:52:42 -06007385static struct pci_error_handlers ipr_err_handler = {
7386 .error_detected = ipr_pci_error_detected,
7387 .slot_reset = ipr_pci_slot_reset,
7388};
7389
Linus Torvalds1da177e2005-04-16 15:20:36 -07007390static struct pci_driver ipr_driver = {
7391 .name = IPR_NAME,
7392 .id_table = ipr_pci_table,
7393 .probe = ipr_probe,
7394 .remove = ipr_remove,
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007395 .shutdown = ipr_shutdown,
Linas Vepstasf8a88b192006-02-03 16:52:42 -06007396 .err_handler = &ipr_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07007397};
7398
7399/**
7400 * ipr_init - Module entry point
7401 *
7402 * Return value:
7403 * 0 on success / negative value on failure
7404 **/
7405static int __init ipr_init(void)
7406{
7407 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7408 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7409
Henrik Kretzschmardcbccbde2006-09-25 16:58:58 -07007410 return pci_register_driver(&ipr_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007411}
7412
7413/**
7414 * ipr_exit - Module unload
7415 *
7416 * Module unload entry point.
7417 *
7418 * Return value:
7419 * none
7420 **/
7421static void __exit ipr_exit(void)
7422{
7423 pci_unregister_driver(&ipr_driver);
7424}
7425
7426module_init(ipr_init);
7427module_exit(ipr_exit);