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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
David Howellsc4028952006-11-22 14:57:56 +00002096 * @work: ioa config struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07002097 *
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 **/
David Howellsc4028952006-11-22 14:57:56 +00002105static void ipr_worker_thread(struct work_struct *work)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002106{
2107 unsigned long lock_flags;
2108 struct ipr_resource_entry *res;
2109 struct scsi_device *sdev;
2110 struct ipr_dump *dump;
David Howellsc4028952006-11-22 14:57:56 +00002111 struct ipr_ioa_cfg *ioa_cfg =
2112 container_of(work, struct ipr_ioa_cfg, work_q);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002113 u8 bus, target, lun;
2114 int did_work;
2115
2116 ENTER;
2117 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2118
2119 if (ioa_cfg->sdt_state == GET_DUMP) {
2120 dump = ioa_cfg->dump;
2121 if (!dump) {
2122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2123 return;
2124 }
2125 kref_get(&dump->kref);
2126 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2127 ipr_get_ioa_dump(ioa_cfg, dump);
2128 kref_put(&dump->kref, ipr_release_dump);
2129
2130 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2131 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2132 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2134 return;
2135 }
2136
2137restart:
2138 do {
2139 did_work = 0;
2140 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2142 return;
2143 }
2144
2145 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2146 if (res->del_from_ml && res->sdev) {
2147 did_work = 1;
2148 sdev = res->sdev;
2149 if (!scsi_device_get(sdev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002150 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2151 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2152 scsi_remove_device(sdev);
2153 scsi_device_put(sdev);
2154 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2155 }
2156 break;
2157 }
2158 }
2159 } while(did_work);
2160
2161 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2162 if (res->add_to_ml) {
2163 bus = res->cfgte.res_addr.bus;
2164 target = res->cfgte.res_addr.target;
2165 lun = res->cfgte.res_addr.lun;
Brian King1121b792006-03-29 09:37:16 -06002166 res->add_to_ml = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2168 scsi_add_device(ioa_cfg->host, bus, target, lun);
2169 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2170 goto restart;
2171 }
2172 }
2173
2174 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
Kay Sievers312c0042005-11-16 09:00:00 +01002175 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002176 LEAVE;
2177}
2178
2179#ifdef CONFIG_SCSI_IPR_TRACE
2180/**
2181 * ipr_read_trace - Dump the adapter trace
2182 * @kobj: kobject struct
2183 * @buf: buffer
2184 * @off: offset
2185 * @count: buffer size
2186 *
2187 * Return value:
2188 * number of bytes printed to buffer
2189 **/
2190static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2191 loff_t off, size_t count)
2192{
2193 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2194 struct Scsi_Host *shost = class_to_shost(cdev);
2195 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2196 unsigned long lock_flags = 0;
2197 int size = IPR_TRACE_SIZE;
2198 char *src = (char *)ioa_cfg->trace;
2199
2200 if (off > size)
2201 return 0;
2202 if (off + count > size) {
2203 size -= off;
2204 count = size;
2205 }
2206
2207 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2208 memcpy(buf, &src[off], count);
2209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2210 return count;
2211}
2212
2213static struct bin_attribute ipr_trace_attr = {
2214 .attr = {
2215 .name = "trace",
2216 .mode = S_IRUGO,
2217 },
2218 .size = 0,
2219 .read = ipr_read_trace,
2220};
2221#endif
2222
brking@us.ibm.com62275042005-11-01 17:01:14 -06002223static const struct {
2224 enum ipr_cache_state state;
2225 char *name;
2226} cache_state [] = {
2227 { CACHE_NONE, "none" },
2228 { CACHE_DISABLED, "disabled" },
2229 { CACHE_ENABLED, "enabled" }
2230};
2231
2232/**
2233 * ipr_show_write_caching - Show the write caching attribute
2234 * @class_dev: class device struct
2235 * @buf: buffer
2236 *
2237 * Return value:
2238 * number of bytes printed to buffer
2239 **/
2240static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2241{
2242 struct Scsi_Host *shost = class_to_shost(class_dev);
2243 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2244 unsigned long lock_flags = 0;
2245 int i, len = 0;
2246
2247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2248 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2249 if (cache_state[i].state == ioa_cfg->cache_state) {
2250 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2251 break;
2252 }
2253 }
2254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2255 return len;
2256}
2257
2258
2259/**
2260 * ipr_store_write_caching - Enable/disable adapter write cache
2261 * @class_dev: class_device struct
2262 * @buf: buffer
2263 * @count: buffer size
2264 *
2265 * This function will enable/disable adapter write cache.
2266 *
2267 * Return value:
2268 * count on success / other on failure
2269 **/
2270static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2271 const char *buf, size_t count)
2272{
2273 struct Scsi_Host *shost = class_to_shost(class_dev);
2274 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2275 unsigned long lock_flags = 0;
2276 enum ipr_cache_state new_state = CACHE_INVALID;
2277 int i;
2278
2279 if (!capable(CAP_SYS_ADMIN))
2280 return -EACCES;
2281 if (ioa_cfg->cache_state == CACHE_NONE)
2282 return -EINVAL;
2283
2284 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2285 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2286 new_state = cache_state[i].state;
2287 break;
2288 }
2289 }
2290
2291 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2292 return -EINVAL;
2293
2294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2295 if (ioa_cfg->cache_state == new_state) {
2296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2297 return count;
2298 }
2299
2300 ioa_cfg->cache_state = new_state;
2301 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2302 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2303 if (!ioa_cfg->in_reset_reload)
2304 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2306 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2307
2308 return count;
2309}
2310
2311static struct class_device_attribute ipr_ioa_cache_attr = {
2312 .attr = {
2313 .name = "write_cache",
2314 .mode = S_IRUGO | S_IWUSR,
2315 },
2316 .show = ipr_show_write_caching,
2317 .store = ipr_store_write_caching
2318};
2319
Linus Torvalds1da177e2005-04-16 15:20:36 -07002320/**
2321 * ipr_show_fw_version - Show the firmware version
2322 * @class_dev: class device struct
2323 * @buf: buffer
2324 *
2325 * Return value:
2326 * number of bytes printed to buffer
2327 **/
2328static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2329{
2330 struct Scsi_Host *shost = class_to_shost(class_dev);
2331 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2332 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2333 unsigned long lock_flags = 0;
2334 int len;
2335
2336 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2337 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2338 ucode_vpd->major_release, ucode_vpd->card_type,
2339 ucode_vpd->minor_release[0],
2340 ucode_vpd->minor_release[1]);
2341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2342 return len;
2343}
2344
2345static struct class_device_attribute ipr_fw_version_attr = {
2346 .attr = {
2347 .name = "fw_version",
2348 .mode = S_IRUGO,
2349 },
2350 .show = ipr_show_fw_version,
2351};
2352
2353/**
2354 * ipr_show_log_level - Show the adapter's error logging level
2355 * @class_dev: class device struct
2356 * @buf: buffer
2357 *
2358 * Return value:
2359 * number of bytes printed to buffer
2360 **/
2361static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2362{
2363 struct Scsi_Host *shost = class_to_shost(class_dev);
2364 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2365 unsigned long lock_flags = 0;
2366 int len;
2367
2368 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2369 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2371 return len;
2372}
2373
2374/**
2375 * ipr_store_log_level - Change the adapter's error logging level
2376 * @class_dev: class device struct
2377 * @buf: buffer
2378 *
2379 * Return value:
2380 * number of bytes printed to buffer
2381 **/
2382static ssize_t ipr_store_log_level(struct class_device *class_dev,
2383 const char *buf, size_t count)
2384{
2385 struct Scsi_Host *shost = class_to_shost(class_dev);
2386 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2387 unsigned long lock_flags = 0;
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2391 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2392 return strlen(buf);
2393}
2394
2395static struct class_device_attribute ipr_log_level_attr = {
2396 .attr = {
2397 .name = "log_level",
2398 .mode = S_IRUGO | S_IWUSR,
2399 },
2400 .show = ipr_show_log_level,
2401 .store = ipr_store_log_level
2402};
2403
2404/**
2405 * ipr_store_diagnostics - IOA Diagnostics interface
2406 * @class_dev: class_device struct
2407 * @buf: buffer
2408 * @count: buffer size
2409 *
2410 * This function will reset the adapter and wait a reasonable
2411 * amount of time for any errors that the adapter might log.
2412 *
2413 * Return value:
2414 * count on success / other on failure
2415 **/
2416static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2417 const char *buf, size_t count)
2418{
2419 struct Scsi_Host *shost = class_to_shost(class_dev);
2420 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2421 unsigned long lock_flags = 0;
2422 int rc = count;
2423
2424 if (!capable(CAP_SYS_ADMIN))
2425 return -EACCES;
2426
2427 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 ioa_cfg->errors_logged = 0;
2430 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2431
2432 if (ioa_cfg->in_reset_reload) {
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2434 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2435
2436 /* Wait for a second for any errors to be logged */
2437 msleep(1000);
2438 } else {
2439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2440 return -EIO;
2441 }
2442
2443 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2444 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2445 rc = -EIO;
2446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2447
2448 return rc;
2449}
2450
2451static struct class_device_attribute ipr_diagnostics_attr = {
2452 .attr = {
2453 .name = "run_diagnostics",
2454 .mode = S_IWUSR,
2455 },
2456 .store = ipr_store_diagnostics
2457};
2458
2459/**
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002460 * ipr_show_adapter_state - Show the adapter's state
2461 * @class_dev: class device struct
2462 * @buf: buffer
2463 *
2464 * Return value:
2465 * number of bytes printed to buffer
2466 **/
2467static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2468{
2469 struct Scsi_Host *shost = class_to_shost(class_dev);
2470 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2471 unsigned long lock_flags = 0;
2472 int len;
2473
2474 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2475 if (ioa_cfg->ioa_is_dead)
2476 len = snprintf(buf, PAGE_SIZE, "offline\n");
2477 else
2478 len = snprintf(buf, PAGE_SIZE, "online\n");
2479 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2480 return len;
2481}
2482
2483/**
2484 * ipr_store_adapter_state - Change adapter state
2485 * @class_dev: class_device struct
2486 * @buf: buffer
2487 * @count: buffer size
2488 *
2489 * This function will change the adapter's state.
2490 *
2491 * Return value:
2492 * count on success / other on failure
2493 **/
2494static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2495 const char *buf, size_t count)
2496{
2497 struct Scsi_Host *shost = class_to_shost(class_dev);
2498 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2499 unsigned long lock_flags;
2500 int result = count;
2501
2502 if (!capable(CAP_SYS_ADMIN))
2503 return -EACCES;
2504
2505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2506 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2507 ioa_cfg->ioa_is_dead = 0;
2508 ioa_cfg->reset_retries = 0;
2509 ioa_cfg->in_ioa_bringdown = 0;
2510 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2511 }
2512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2513 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2514
2515 return result;
2516}
2517
2518static struct class_device_attribute ipr_ioa_state_attr = {
2519 .attr = {
2520 .name = "state",
2521 .mode = S_IRUGO | S_IWUSR,
2522 },
2523 .show = ipr_show_adapter_state,
2524 .store = ipr_store_adapter_state
2525};
2526
2527/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07002528 * ipr_store_reset_adapter - Reset the adapter
2529 * @class_dev: class_device struct
2530 * @buf: buffer
2531 * @count: buffer size
2532 *
2533 * This function will reset the adapter.
2534 *
2535 * Return value:
2536 * count on success / other on failure
2537 **/
2538static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2539 const char *buf, size_t count)
2540{
2541 struct Scsi_Host *shost = class_to_shost(class_dev);
2542 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2543 unsigned long lock_flags;
2544 int result = count;
2545
2546 if (!capable(CAP_SYS_ADMIN))
2547 return -EACCES;
2548
2549 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2550 if (!ioa_cfg->in_reset_reload)
2551 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2552 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2553 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2554
2555 return result;
2556}
2557
2558static struct class_device_attribute ipr_ioa_reset_attr = {
2559 .attr = {
2560 .name = "reset_host",
2561 .mode = S_IWUSR,
2562 },
2563 .store = ipr_store_reset_adapter
2564};
2565
2566/**
2567 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2568 * @buf_len: buffer length
2569 *
2570 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2571 * list to use for microcode download
2572 *
2573 * Return value:
2574 * pointer to sglist / NULL on failure
2575 **/
2576static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2577{
2578 int sg_size, order, bsize_elem, num_elem, i, j;
2579 struct ipr_sglist *sglist;
2580 struct scatterlist *scatterlist;
2581 struct page *page;
2582
2583 /* Get the minimum size per scatter/gather element */
2584 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2585
2586 /* Get the actual size per element */
2587 order = get_order(sg_size);
2588
2589 /* Determine the actual number of bytes per element */
2590 bsize_elem = PAGE_SIZE * (1 << order);
2591
2592 /* Determine the actual number of sg entries needed */
2593 if (buf_len % bsize_elem)
2594 num_elem = (buf_len / bsize_elem) + 1;
2595 else
2596 num_elem = buf_len / bsize_elem;
2597
2598 /* Allocate a scatter/gather list for the DMA */
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002599 sglist = kzalloc(sizeof(struct ipr_sglist) +
Linus Torvalds1da177e2005-04-16 15:20:36 -07002600 (sizeof(struct scatterlist) * (num_elem - 1)),
2601 GFP_KERNEL);
2602
2603 if (sglist == NULL) {
2604 ipr_trace;
2605 return NULL;
2606 }
2607
Linus Torvalds1da177e2005-04-16 15:20:36 -07002608 scatterlist = sglist->scatterlist;
2609
2610 sglist->order = order;
2611 sglist->num_sg = num_elem;
2612
2613 /* Allocate a bunch of sg elements */
2614 for (i = 0; i < num_elem; i++) {
2615 page = alloc_pages(GFP_KERNEL, order);
2616 if (!page) {
2617 ipr_trace;
2618
2619 /* Free up what we already allocated */
2620 for (j = i - 1; j >= 0; j--)
2621 __free_pages(scatterlist[j].page, order);
2622 kfree(sglist);
2623 return NULL;
2624 }
2625
2626 scatterlist[i].page = page;
2627 }
2628
2629 return sglist;
2630}
2631
2632/**
2633 * ipr_free_ucode_buffer - Frees a microcode download buffer
2634 * @p_dnld: scatter/gather list pointer
2635 *
2636 * Free a DMA'able ucode download buffer previously allocated with
2637 * ipr_alloc_ucode_buffer
2638 *
2639 * Return value:
2640 * nothing
2641 **/
2642static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2643{
2644 int i;
2645
2646 for (i = 0; i < sglist->num_sg; i++)
2647 __free_pages(sglist->scatterlist[i].page, sglist->order);
2648
2649 kfree(sglist);
2650}
2651
2652/**
2653 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2654 * @sglist: scatter/gather list pointer
2655 * @buffer: buffer pointer
2656 * @len: buffer length
2657 *
2658 * Copy a microcode image from a user buffer into a buffer allocated by
2659 * ipr_alloc_ucode_buffer
2660 *
2661 * Return value:
2662 * 0 on success / other on failure
2663 **/
2664static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2665 u8 *buffer, u32 len)
2666{
2667 int bsize_elem, i, result = 0;
2668 struct scatterlist *scatterlist;
2669 void *kaddr;
2670
2671 /* Determine the actual number of bytes per element */
2672 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2673
2674 scatterlist = sglist->scatterlist;
2675
2676 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2677 kaddr = kmap(scatterlist[i].page);
2678 memcpy(kaddr, buffer, bsize_elem);
2679 kunmap(scatterlist[i].page);
2680
2681 scatterlist[i].length = bsize_elem;
2682
2683 if (result != 0) {
2684 ipr_trace;
2685 return result;
2686 }
2687 }
2688
2689 if (len % bsize_elem) {
2690 kaddr = kmap(scatterlist[i].page);
2691 memcpy(kaddr, buffer, len % bsize_elem);
2692 kunmap(scatterlist[i].page);
2693
2694 scatterlist[i].length = len % bsize_elem;
2695 }
2696
2697 sglist->buffer_len = len;
2698 return result;
2699}
2700
2701/**
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002702 * ipr_build_ucode_ioadl - Build a microcode download IOADL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002703 * @ipr_cmd: ipr command struct
2704 * @sglist: scatter/gather list
Linus Torvalds1da177e2005-04-16 15:20:36 -07002705 *
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002706 * Builds a microcode download IOA data list (IOADL).
Linus Torvalds1da177e2005-04-16 15:20:36 -07002707 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07002708 **/
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002709static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2710 struct ipr_sglist *sglist)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002711{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002712 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2713 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2714 struct scatterlist *scatterlist = sglist->scatterlist;
2715 int i;
2716
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002717 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002718 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002719 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002720 ioarcb->write_ioadl_len =
2721 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2722
2723 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2724 ioadl[i].flags_and_data_len =
2725 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2726 ioadl[i].address =
2727 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2728 }
2729
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002730 ioadl[i-1].flags_and_data_len |=
2731 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2732}
2733
2734/**
2735 * ipr_update_ioa_ucode - Update IOA's microcode
2736 * @ioa_cfg: ioa config struct
2737 * @sglist: scatter/gather list
2738 *
2739 * Initiate an adapter reset to update the IOA's microcode
2740 *
2741 * Return value:
2742 * 0 on success / -EIO on failure
2743 **/
2744static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2745 struct ipr_sglist *sglist)
2746{
2747 unsigned long lock_flags;
2748
2749 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2750
2751 if (ioa_cfg->ucode_sglist) {
2752 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2753 dev_err(&ioa_cfg->pdev->dev,
2754 "Microcode download already in progress\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002755 return -EIO;
2756 }
2757
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002758 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2759 sglist->num_sg, DMA_TO_DEVICE);
2760
2761 if (!sglist->num_dma_sg) {
2762 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2763 dev_err(&ioa_cfg->pdev->dev,
2764 "Failed to map microcode download buffer!\n");
2765 return -EIO;
2766 }
2767
2768 ioa_cfg->ucode_sglist = sglist;
2769 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2770 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2771 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2772
2773 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2774 ioa_cfg->ucode_sglist = NULL;
2775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002776 return 0;
2777}
2778
2779/**
2780 * ipr_store_update_fw - Update the firmware on the adapter
2781 * @class_dev: class_device struct
2782 * @buf: buffer
2783 * @count: buffer size
2784 *
2785 * This function will update the firmware on the adapter.
2786 *
2787 * Return value:
2788 * count on success / other on failure
2789 **/
2790static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2791 const char *buf, size_t count)
2792{
2793 struct Scsi_Host *shost = class_to_shost(class_dev);
2794 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2795 struct ipr_ucode_image_header *image_hdr;
2796 const struct firmware *fw_entry;
2797 struct ipr_sglist *sglist;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002798 char fname[100];
2799 char *src;
2800 int len, result, dnld_size;
2801
2802 if (!capable(CAP_SYS_ADMIN))
2803 return -EACCES;
2804
2805 len = snprintf(fname, 99, "%s", buf);
2806 fname[len-1] = '\0';
2807
2808 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2809 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2810 return -EIO;
2811 }
2812
2813 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2814
2815 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2816 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2817 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2818 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2819 release_firmware(fw_entry);
2820 return -EINVAL;
2821 }
2822
2823 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2824 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2825 sglist = ipr_alloc_ucode_buffer(dnld_size);
2826
2827 if (!sglist) {
2828 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2829 release_firmware(fw_entry);
2830 return -ENOMEM;
2831 }
2832
2833 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2834
2835 if (result) {
2836 dev_err(&ioa_cfg->pdev->dev,
2837 "Microcode buffer copy to DMA buffer failed\n");
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002838 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002839 }
2840
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002841 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002842
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002843 if (!result)
2844 result = count;
2845out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846 ipr_free_ucode_buffer(sglist);
2847 release_firmware(fw_entry);
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002848 return result;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002849}
2850
2851static struct class_device_attribute ipr_update_fw_attr = {
2852 .attr = {
2853 .name = "update_fw",
2854 .mode = S_IWUSR,
2855 },
2856 .store = ipr_store_update_fw
2857};
2858
2859static struct class_device_attribute *ipr_ioa_attrs[] = {
2860 &ipr_fw_version_attr,
2861 &ipr_log_level_attr,
2862 &ipr_diagnostics_attr,
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002863 &ipr_ioa_state_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002864 &ipr_ioa_reset_attr,
2865 &ipr_update_fw_attr,
brking@us.ibm.com62275042005-11-01 17:01:14 -06002866 &ipr_ioa_cache_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002867 NULL,
2868};
2869
2870#ifdef CONFIG_SCSI_IPR_DUMP
2871/**
2872 * ipr_read_dump - Dump the adapter
2873 * @kobj: kobject struct
2874 * @buf: buffer
2875 * @off: offset
2876 * @count: buffer size
2877 *
2878 * Return value:
2879 * number of bytes printed to buffer
2880 **/
2881static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2882 loff_t off, size_t count)
2883{
2884 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2885 struct Scsi_Host *shost = class_to_shost(cdev);
2886 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2887 struct ipr_dump *dump;
2888 unsigned long lock_flags = 0;
2889 char *src;
2890 int len;
2891 size_t rc = count;
2892
2893 if (!capable(CAP_SYS_ADMIN))
2894 return -EACCES;
2895
2896 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2897 dump = ioa_cfg->dump;
2898
2899 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2900 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2901 return 0;
2902 }
2903 kref_get(&dump->kref);
2904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2905
2906 if (off > dump->driver_dump.hdr.len) {
2907 kref_put(&dump->kref, ipr_release_dump);
2908 return 0;
2909 }
2910
2911 if (off + count > dump->driver_dump.hdr.len) {
2912 count = dump->driver_dump.hdr.len - off;
2913 rc = count;
2914 }
2915
2916 if (count && off < sizeof(dump->driver_dump)) {
2917 if (off + count > sizeof(dump->driver_dump))
2918 len = sizeof(dump->driver_dump) - off;
2919 else
2920 len = count;
2921 src = (u8 *)&dump->driver_dump + off;
2922 memcpy(buf, src, len);
2923 buf += len;
2924 off += len;
2925 count -= len;
2926 }
2927
2928 off -= sizeof(dump->driver_dump);
2929
2930 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2931 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2932 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2933 else
2934 len = count;
2935 src = (u8 *)&dump->ioa_dump + off;
2936 memcpy(buf, src, len);
2937 buf += len;
2938 off += len;
2939 count -= len;
2940 }
2941
2942 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2943
2944 while (count) {
2945 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2946 len = PAGE_ALIGN(off) - off;
2947 else
2948 len = count;
2949 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2950 src += off & ~PAGE_MASK;
2951 memcpy(buf, src, len);
2952 buf += len;
2953 off += len;
2954 count -= len;
2955 }
2956
2957 kref_put(&dump->kref, ipr_release_dump);
2958 return rc;
2959}
2960
2961/**
2962 * ipr_alloc_dump - Prepare for adapter dump
2963 * @ioa_cfg: ioa config struct
2964 *
2965 * Return value:
2966 * 0 on success / other on failure
2967 **/
2968static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2969{
2970 struct ipr_dump *dump;
2971 unsigned long lock_flags = 0;
2972
2973 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002974 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002975
2976 if (!dump) {
2977 ipr_err("Dump memory allocation failed\n");
2978 return -ENOMEM;
2979 }
2980
Linus Torvalds1da177e2005-04-16 15:20:36 -07002981 kref_init(&dump->kref);
2982 dump->ioa_cfg = ioa_cfg;
2983
2984 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2985
2986 if (INACTIVE != ioa_cfg->sdt_state) {
2987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2988 kfree(dump);
2989 return 0;
2990 }
2991
2992 ioa_cfg->dump = dump;
2993 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2994 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2995 ioa_cfg->dump_taken = 1;
2996 schedule_work(&ioa_cfg->work_q);
2997 }
2998 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2999
3000 LEAVE;
3001 return 0;
3002}
3003
3004/**
3005 * ipr_free_dump - Free adapter dump memory
3006 * @ioa_cfg: ioa config struct
3007 *
3008 * Return value:
3009 * 0 on success / other on failure
3010 **/
3011static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3012{
3013 struct ipr_dump *dump;
3014 unsigned long lock_flags = 0;
3015
3016 ENTER;
3017
3018 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3019 dump = ioa_cfg->dump;
3020 if (!dump) {
3021 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3022 return 0;
3023 }
3024
3025 ioa_cfg->dump = NULL;
3026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3027
3028 kref_put(&dump->kref, ipr_release_dump);
3029
3030 LEAVE;
3031 return 0;
3032}
3033
3034/**
3035 * ipr_write_dump - Setup dump state of adapter
3036 * @kobj: kobject struct
3037 * @buf: buffer
3038 * @off: offset
3039 * @count: buffer size
3040 *
3041 * Return value:
3042 * number of bytes printed to buffer
3043 **/
3044static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3045 loff_t off, size_t count)
3046{
3047 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3048 struct Scsi_Host *shost = class_to_shost(cdev);
3049 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3050 int rc;
3051
3052 if (!capable(CAP_SYS_ADMIN))
3053 return -EACCES;
3054
3055 if (buf[0] == '1')
3056 rc = ipr_alloc_dump(ioa_cfg);
3057 else if (buf[0] == '0')
3058 rc = ipr_free_dump(ioa_cfg);
3059 else
3060 return -EINVAL;
3061
3062 if (rc)
3063 return rc;
3064 else
3065 return count;
3066}
3067
3068static struct bin_attribute ipr_dump_attr = {
3069 .attr = {
3070 .name = "dump",
3071 .mode = S_IRUSR | S_IWUSR,
3072 },
3073 .size = 0,
3074 .read = ipr_read_dump,
3075 .write = ipr_write_dump
3076};
3077#else
3078static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3079#endif
3080
3081/**
3082 * ipr_change_queue_depth - Change the device's queue depth
3083 * @sdev: scsi device struct
3084 * @qdepth: depth to set
3085 *
3086 * Return value:
3087 * actual depth set
3088 **/
3089static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3090{
Brian King35a39692006-09-25 12:39:20 -05003091 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3092 struct ipr_resource_entry *res;
3093 unsigned long lock_flags = 0;
3094
3095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3096 res = (struct ipr_resource_entry *)sdev->hostdata;
3097
3098 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3099 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3100 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3101
Linus Torvalds1da177e2005-04-16 15:20:36 -07003102 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3103 return sdev->queue_depth;
3104}
3105
3106/**
3107 * ipr_change_queue_type - Change the device's queue type
3108 * @dsev: scsi device struct
3109 * @tag_type: type of tags to use
3110 *
3111 * Return value:
3112 * actual queue type set
3113 **/
3114static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3115{
3116 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3117 struct ipr_resource_entry *res;
3118 unsigned long lock_flags = 0;
3119
3120 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3121 res = (struct ipr_resource_entry *)sdev->hostdata;
3122
3123 if (res) {
3124 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3125 /*
3126 * We don't bother quiescing the device here since the
3127 * adapter firmware does it for us.
3128 */
3129 scsi_set_tag_type(sdev, tag_type);
3130
3131 if (tag_type)
3132 scsi_activate_tcq(sdev, sdev->queue_depth);
3133 else
3134 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3135 } else
3136 tag_type = 0;
3137 } else
3138 tag_type = 0;
3139
3140 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3141 return tag_type;
3142}
3143
3144/**
3145 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3146 * @dev: device struct
3147 * @buf: buffer
3148 *
3149 * Return value:
3150 * number of bytes printed to buffer
3151 **/
Yani Ioannou10523b32005-05-17 06:43:37 -04003152static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003153{
3154 struct scsi_device *sdev = to_scsi_device(dev);
3155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3156 struct ipr_resource_entry *res;
3157 unsigned long lock_flags = 0;
3158 ssize_t len = -ENXIO;
3159
3160 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3161 res = (struct ipr_resource_entry *)sdev->hostdata;
3162 if (res)
3163 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3164 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3165 return len;
3166}
3167
3168static struct device_attribute ipr_adapter_handle_attr = {
3169 .attr = {
3170 .name = "adapter_handle",
3171 .mode = S_IRUSR,
3172 },
3173 .show = ipr_show_adapter_handle
3174};
3175
3176static struct device_attribute *ipr_dev_attrs[] = {
3177 &ipr_adapter_handle_attr,
3178 NULL,
3179};
3180
3181/**
3182 * ipr_biosparam - Return the HSC mapping
3183 * @sdev: scsi device struct
3184 * @block_device: block device pointer
3185 * @capacity: capacity of the device
3186 * @parm: Array containing returned HSC values.
3187 *
3188 * This function generates the HSC parms that fdisk uses.
3189 * We want to make sure we return something that places partitions
3190 * on 4k boundaries for best performance with the IOA.
3191 *
3192 * Return value:
3193 * 0 on success
3194 **/
3195static int ipr_biosparam(struct scsi_device *sdev,
3196 struct block_device *block_device,
3197 sector_t capacity, int *parm)
3198{
3199 int heads, sectors;
3200 sector_t cylinders;
3201
3202 heads = 128;
3203 sectors = 32;
3204
3205 cylinders = capacity;
3206 sector_div(cylinders, (128 * 32));
3207
3208 /* return result */
3209 parm[0] = heads;
3210 parm[1] = sectors;
3211 parm[2] = cylinders;
3212
3213 return 0;
3214}
3215
3216/**
Brian King35a39692006-09-25 12:39:20 -05003217 * ipr_find_starget - Find target based on bus/target.
3218 * @starget: scsi target struct
3219 *
3220 * Return value:
3221 * resource entry pointer if found / NULL if not found
3222 **/
3223static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3224{
3225 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3226 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3227 struct ipr_resource_entry *res;
3228
3229 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3230 if ((res->cfgte.res_addr.bus == starget->channel) &&
3231 (res->cfgte.res_addr.target == starget->id) &&
3232 (res->cfgte.res_addr.lun == 0)) {
3233 return res;
3234 }
3235 }
3236
3237 return NULL;
3238}
3239
3240static struct ata_port_info sata_port_info;
3241
3242/**
3243 * ipr_target_alloc - Prepare for commands to a SCSI target
3244 * @starget: scsi target struct
3245 *
3246 * If the device is a SATA device, this function allocates an
3247 * ATA port with libata, else it does nothing.
3248 *
3249 * Return value:
3250 * 0 on success / non-0 on failure
3251 **/
3252static int ipr_target_alloc(struct scsi_target *starget)
3253{
3254 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3255 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3256 struct ipr_sata_port *sata_port;
3257 struct ata_port *ap;
3258 struct ipr_resource_entry *res;
3259 unsigned long lock_flags;
3260
3261 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3262 res = ipr_find_starget(starget);
3263 starget->hostdata = NULL;
3264
3265 if (res && ipr_is_gata(res)) {
3266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3267 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3268 if (!sata_port)
3269 return -ENOMEM;
3270
3271 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3272 if (ap) {
3273 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3274 sata_port->ioa_cfg = ioa_cfg;
3275 sata_port->ap = ap;
3276 sata_port->res = res;
3277
3278 res->sata_port = sata_port;
3279 ap->private_data = sata_port;
3280 starget->hostdata = sata_port;
3281 } else {
3282 kfree(sata_port);
3283 return -ENOMEM;
3284 }
3285 }
3286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3287
3288 return 0;
3289}
3290
3291/**
3292 * ipr_target_destroy - Destroy a SCSI target
3293 * @starget: scsi target struct
3294 *
3295 * If the device was a SATA device, this function frees the libata
3296 * ATA port, else it does nothing.
3297 *
3298 **/
3299static void ipr_target_destroy(struct scsi_target *starget)
3300{
3301 struct ipr_sata_port *sata_port = starget->hostdata;
3302
3303 if (sata_port) {
3304 starget->hostdata = NULL;
3305 ata_sas_port_destroy(sata_port->ap);
3306 kfree(sata_port);
3307 }
3308}
3309
3310/**
3311 * ipr_find_sdev - Find device based on bus/target/lun.
3312 * @sdev: scsi device struct
3313 *
3314 * Return value:
3315 * resource entry pointer if found / NULL if not found
3316 **/
3317static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3318{
3319 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3320 struct ipr_resource_entry *res;
3321
3322 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3323 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3324 (res->cfgte.res_addr.target == sdev->id) &&
3325 (res->cfgte.res_addr.lun == sdev->lun))
3326 return res;
3327 }
3328
3329 return NULL;
3330}
3331
3332/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003333 * ipr_slave_destroy - Unconfigure a SCSI device
3334 * @sdev: scsi device struct
3335 *
3336 * Return value:
3337 * nothing
3338 **/
3339static void ipr_slave_destroy(struct scsi_device *sdev)
3340{
3341 struct ipr_resource_entry *res;
3342 struct ipr_ioa_cfg *ioa_cfg;
3343 unsigned long lock_flags = 0;
3344
3345 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3346
3347 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3348 res = (struct ipr_resource_entry *) sdev->hostdata;
3349 if (res) {
Brian King35a39692006-09-25 12:39:20 -05003350 if (res->sata_port)
3351 ata_port_disable(res->sata_port->ap);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003352 sdev->hostdata = NULL;
3353 res->sdev = NULL;
Brian King35a39692006-09-25 12:39:20 -05003354 res->sata_port = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003355 }
3356 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3357}
3358
3359/**
3360 * ipr_slave_configure - Configure a SCSI device
3361 * @sdev: scsi device struct
3362 *
3363 * This function configures the specified scsi device.
3364 *
3365 * Return value:
3366 * 0 on success
3367 **/
3368static int ipr_slave_configure(struct scsi_device *sdev)
3369{
3370 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3371 struct ipr_resource_entry *res;
3372 unsigned long lock_flags = 0;
3373
3374 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3375 res = sdev->hostdata;
3376 if (res) {
3377 if (ipr_is_af_dasd_device(res))
3378 sdev->type = TYPE_RAID;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003379 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003380 sdev->scsi_level = 4;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003381 sdev->no_uld_attach = 1;
3382 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003383 if (ipr_is_vset_device(res)) {
3384 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3385 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3386 }
Brian Kinge4fbf442006-03-29 09:37:22 -06003387 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07003388 sdev->allow_restart = 1;
Brian King35a39692006-09-25 12:39:20 -05003389 if (ipr_is_gata(res) && res->sata_port) {
3390 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3391 ata_sas_slave_configure(sdev, res->sata_port->ap);
3392 } else {
3393 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3394 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003395 }
3396 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3397 return 0;
3398}
3399
3400/**
Brian King35a39692006-09-25 12:39:20 -05003401 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3402 * @sdev: scsi device struct
3403 *
3404 * This function initializes an ATA port so that future commands
3405 * sent through queuecommand will work.
3406 *
3407 * Return value:
3408 * 0 on success
3409 **/
3410static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3411{
3412 struct ipr_sata_port *sata_port = NULL;
3413 int rc = -ENXIO;
3414
3415 ENTER;
3416 if (sdev->sdev_target)
3417 sata_port = sdev->sdev_target->hostdata;
3418 if (sata_port)
3419 rc = ata_sas_port_init(sata_port->ap);
3420 if (rc)
3421 ipr_slave_destroy(sdev);
3422
3423 LEAVE;
3424 return rc;
3425}
3426
3427/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003428 * ipr_slave_alloc - Prepare for commands to a device.
3429 * @sdev: scsi device struct
3430 *
3431 * This function saves a pointer to the resource entry
3432 * in the scsi device struct if the device exists. We
3433 * can then use this pointer in ipr_queuecommand when
3434 * handling new commands.
3435 *
3436 * Return value:
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003437 * 0 on success / -ENXIO if device does not exist
Linus Torvalds1da177e2005-04-16 15:20:36 -07003438 **/
3439static int ipr_slave_alloc(struct scsi_device *sdev)
3440{
3441 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3442 struct ipr_resource_entry *res;
3443 unsigned long lock_flags;
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003444 int rc = -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003445
3446 sdev->hostdata = NULL;
3447
3448 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3449
Brian King35a39692006-09-25 12:39:20 -05003450 res = ipr_find_sdev(sdev);
3451 if (res) {
3452 res->sdev = sdev;
3453 res->add_to_ml = 0;
3454 res->in_erp = 0;
3455 sdev->hostdata = res;
3456 if (!ipr_is_naca_model(res))
3457 res->needs_sync_complete = 1;
3458 rc = 0;
3459 if (ipr_is_gata(res)) {
3460 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3461 return ipr_ata_slave_alloc(sdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003462 }
3463 }
3464
3465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3466
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003467 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003468}
3469
3470/**
3471 * ipr_eh_host_reset - Reset the host adapter
3472 * @scsi_cmd: scsi command struct
3473 *
3474 * Return value:
3475 * SUCCESS / FAILED
3476 **/
Jeff Garzik df0ae242005-05-28 07:57:14 -04003477static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003478{
3479 struct ipr_ioa_cfg *ioa_cfg;
3480 int rc;
3481
3482 ENTER;
3483 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3484
3485 dev_err(&ioa_cfg->pdev->dev,
3486 "Adapter being reset as a result of error recovery.\n");
3487
3488 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3489 ioa_cfg->sdt_state = GET_DUMP;
3490
3491 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3492
3493 LEAVE;
3494 return rc;
3495}
3496
Jeff Garzik df0ae242005-05-28 07:57:14 -04003497static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3498{
3499 int rc;
3500
3501 spin_lock_irq(cmd->device->host->host_lock);
3502 rc = __ipr_eh_host_reset(cmd);
3503 spin_unlock_irq(cmd->device->host->host_lock);
3504
3505 return rc;
3506}
3507
Linus Torvalds1da177e2005-04-16 15:20:36 -07003508/**
Brian Kingc6513092006-03-29 09:37:43 -06003509 * ipr_device_reset - Reset the device
3510 * @ioa_cfg: ioa config struct
3511 * @res: resource entry struct
3512 *
3513 * This function issues a device reset to the affected device.
3514 * If the device is a SCSI device, a LUN reset will be sent
3515 * to the device first. If that does not work, a target reset
Brian King35a39692006-09-25 12:39:20 -05003516 * will be sent. If the device is a SATA device, a PHY reset will
3517 * be sent.
Brian Kingc6513092006-03-29 09:37:43 -06003518 *
3519 * Return value:
3520 * 0 on success / non-zero on failure
3521 **/
3522static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3523 struct ipr_resource_entry *res)
3524{
3525 struct ipr_cmnd *ipr_cmd;
3526 struct ipr_ioarcb *ioarcb;
3527 struct ipr_cmd_pkt *cmd_pkt;
Brian King35a39692006-09-25 12:39:20 -05003528 struct ipr_ioarcb_ata_regs *regs;
Brian Kingc6513092006-03-29 09:37:43 -06003529 u32 ioasc;
3530
3531 ENTER;
3532 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3533 ioarcb = &ipr_cmd->ioarcb;
3534 cmd_pkt = &ioarcb->cmd_pkt;
Brian King35a39692006-09-25 12:39:20 -05003535 regs = &ioarcb->add_data.u.regs;
Brian Kingc6513092006-03-29 09:37:43 -06003536
3537 ioarcb->res_handle = res->cfgte.res_handle;
3538 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3539 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
Brian King35a39692006-09-25 12:39:20 -05003540 if (ipr_is_gata(res)) {
3541 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3542 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3543 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3544 }
Brian Kingc6513092006-03-29 09:37:43 -06003545
3546 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3547 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3548 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
Brian King35a39692006-09-25 12:39:20 -05003549 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3550 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3551 sizeof(struct ipr_ioasa_gata));
Brian Kingc6513092006-03-29 09:37:43 -06003552
3553 LEAVE;
3554 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3555}
3556
3557/**
Brian King35a39692006-09-25 12:39:20 -05003558 * ipr_sata_reset - Reset the SATA port
3559 * @ap: SATA port to reset
3560 * @classes: class of the attached device
3561 *
3562 * This function issues a SATA phy reset to the affected ATA port.
3563 *
3564 * Return value:
3565 * 0 on success / non-zero on failure
3566 **/
3567static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3568{
3569 struct ipr_sata_port *sata_port = ap->private_data;
3570 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3571 struct ipr_resource_entry *res;
3572 unsigned long lock_flags = 0;
3573 int rc = -ENXIO;
3574
3575 ENTER;
3576 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3577 res = sata_port->res;
3578 if (res) {
3579 rc = ipr_device_reset(ioa_cfg, res);
3580 switch(res->cfgte.proto) {
3581 case IPR_PROTO_SATA:
3582 case IPR_PROTO_SAS_STP:
3583 *classes = ATA_DEV_ATA;
3584 break;
3585 case IPR_PROTO_SATA_ATAPI:
3586 case IPR_PROTO_SAS_STP_ATAPI:
3587 *classes = ATA_DEV_ATAPI;
3588 break;
3589 default:
3590 *classes = ATA_DEV_UNKNOWN;
3591 break;
3592 };
3593 }
3594
3595 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3596 LEAVE;
3597 return rc;
3598}
3599
3600/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07003601 * ipr_eh_dev_reset - Reset the device
3602 * @scsi_cmd: scsi command struct
3603 *
3604 * This function issues a device reset to the affected device.
3605 * A LUN reset will be sent to the device first. If that does
3606 * not work, a target reset will be sent.
3607 *
3608 * Return value:
3609 * SUCCESS / FAILED
3610 **/
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003611static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003612{
3613 struct ipr_cmnd *ipr_cmd;
3614 struct ipr_ioa_cfg *ioa_cfg;
3615 struct ipr_resource_entry *res;
Brian King35a39692006-09-25 12:39:20 -05003616 struct ata_port *ap;
3617 int rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003618
3619 ENTER;
3620 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3621 res = scsi_cmd->device->hostdata;
3622
brking@us.ibm.comeeb883072005-11-01 17:02:29 -06003623 if (!res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003624 return FAILED;
3625
3626 /*
3627 * If we are currently going through reset/reload, return failed. This will force the
3628 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3629 * reset to complete
3630 */
3631 if (ioa_cfg->in_reset_reload)
3632 return FAILED;
3633 if (ioa_cfg->ioa_is_dead)
3634 return FAILED;
3635
3636 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3637 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3638 if (ipr_cmd->scsi_cmd)
3639 ipr_cmd->done = ipr_scsi_eh_done;
3640 }
3641 }
3642
3643 res->resetting_device = 1;
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003644 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
Brian King35a39692006-09-25 12:39:20 -05003645
3646 if (ipr_is_gata(res) && res->sata_port) {
3647 ap = res->sata_port->ap;
3648 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3649 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3650 spin_lock_irq(scsi_cmd->device->host->host_lock);
3651 } else
3652 rc = ipr_device_reset(ioa_cfg, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003653 res->resetting_device = 0;
3654
Linus Torvalds1da177e2005-04-16 15:20:36 -07003655 LEAVE;
Brian Kingc6513092006-03-29 09:37:43 -06003656 return (rc ? FAILED : SUCCESS);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003657}
3658
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003659static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3660{
3661 int rc;
3662
3663 spin_lock_irq(cmd->device->host->host_lock);
3664 rc = __ipr_eh_dev_reset(cmd);
3665 spin_unlock_irq(cmd->device->host->host_lock);
3666
3667 return rc;
3668}
3669
Linus Torvalds1da177e2005-04-16 15:20:36 -07003670/**
3671 * ipr_bus_reset_done - Op done function for bus reset.
3672 * @ipr_cmd: ipr command struct
3673 *
3674 * This function is the op done function for a bus reset
3675 *
3676 * Return value:
3677 * none
3678 **/
3679static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3680{
3681 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3682 struct ipr_resource_entry *res;
3683
3684 ENTER;
3685 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3686 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3687 sizeof(res->cfgte.res_handle))) {
3688 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3689 break;
3690 }
3691 }
3692
3693 /*
3694 * If abort has not completed, indicate the reset has, else call the
3695 * abort's done function to wake the sleeping eh thread
3696 */
3697 if (ipr_cmd->sibling->sibling)
3698 ipr_cmd->sibling->sibling = NULL;
3699 else
3700 ipr_cmd->sibling->done(ipr_cmd->sibling);
3701
3702 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3703 LEAVE;
3704}
3705
3706/**
3707 * ipr_abort_timeout - An abort task has timed out
3708 * @ipr_cmd: ipr command struct
3709 *
3710 * This function handles when an abort task times out. If this
3711 * happens we issue a bus reset since we have resources tied
3712 * up that must be freed before returning to the midlayer.
3713 *
3714 * Return value:
3715 * none
3716 **/
3717static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3718{
3719 struct ipr_cmnd *reset_cmd;
3720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3721 struct ipr_cmd_pkt *cmd_pkt;
3722 unsigned long lock_flags = 0;
3723
3724 ENTER;
3725 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3726 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3727 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3728 return;
3729 }
3730
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003731 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07003732 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3733 ipr_cmd->sibling = reset_cmd;
3734 reset_cmd->sibling = ipr_cmd;
3735 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3736 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3737 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3738 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3739 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3740
3741 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3742 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3743 LEAVE;
3744}
3745
3746/**
3747 * ipr_cancel_op - Cancel specified op
3748 * @scsi_cmd: scsi command struct
3749 *
3750 * This function cancels specified op.
3751 *
3752 * Return value:
3753 * SUCCESS / FAILED
3754 **/
3755static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3756{
3757 struct ipr_cmnd *ipr_cmd;
3758 struct ipr_ioa_cfg *ioa_cfg;
3759 struct ipr_resource_entry *res;
3760 struct ipr_cmd_pkt *cmd_pkt;
3761 u32 ioasc;
3762 int op_found = 0;
3763
3764 ENTER;
3765 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3766 res = scsi_cmd->device->hostdata;
3767
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003768 /* If we are currently going through reset/reload, return failed.
3769 * This will force the mid-layer to call ipr_eh_host_reset,
3770 * which will then go to sleep and wait for the reset to complete
3771 */
3772 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3773 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003774 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3775 return FAILED;
3776
3777 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3778 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3779 ipr_cmd->done = ipr_scsi_eh_done;
3780 op_found = 1;
3781 break;
3782 }
3783 }
3784
3785 if (!op_found)
3786 return SUCCESS;
3787
3788 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3789 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3790 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3791 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3792 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3793 ipr_cmd->u.sdev = scsi_cmd->device;
3794
Brian Kingfb3ed3c2006-03-29 09:37:37 -06003795 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
3796 scsi_cmd->cmnd[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003797 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3798 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3799
3800 /*
3801 * If the abort task timed out and we sent a bus reset, we will get
3802 * one the following responses to the abort
3803 */
3804 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3805 ioasc = 0;
3806 ipr_trace;
3807 }
3808
3809 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06003810 if (!ipr_is_naca_model(res))
3811 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003812
3813 LEAVE;
3814 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3815}
3816
3817/**
3818 * ipr_eh_abort - Abort a single op
3819 * @scsi_cmd: scsi command struct
3820 *
3821 * Return value:
3822 * SUCCESS / FAILED
3823 **/
3824static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3825{
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003826 unsigned long flags;
3827 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003828
3829 ENTER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003830
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003831 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3832 rc = ipr_cancel_op(scsi_cmd);
3833 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003834
3835 LEAVE;
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003836 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003837}
3838
3839/**
3840 * ipr_handle_other_interrupt - Handle "other" interrupts
3841 * @ioa_cfg: ioa config struct
3842 * @int_reg: interrupt register
3843 *
3844 * Return value:
3845 * IRQ_NONE / IRQ_HANDLED
3846 **/
3847static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3848 volatile u32 int_reg)
3849{
3850 irqreturn_t rc = IRQ_HANDLED;
3851
3852 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3853 /* Mask the interrupt */
3854 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3855
3856 /* Clear the interrupt */
3857 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3858 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3859
3860 list_del(&ioa_cfg->reset_cmd->queue);
3861 del_timer(&ioa_cfg->reset_cmd->timer);
3862 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3863 } else {
3864 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3865 ioa_cfg->ioa_unit_checked = 1;
3866 else
3867 dev_err(&ioa_cfg->pdev->dev,
3868 "Permanent IOA failure. 0x%08X\n", int_reg);
3869
3870 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3871 ioa_cfg->sdt_state = GET_DUMP;
3872
3873 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3874 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3875 }
3876
3877 return rc;
3878}
3879
3880/**
3881 * ipr_isr - Interrupt service routine
3882 * @irq: irq number
3883 * @devp: pointer to ioa config struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07003884 *
3885 * Return value:
3886 * IRQ_NONE / IRQ_HANDLED
3887 **/
David Howells7d12e782006-10-05 14:55:46 +01003888static irqreturn_t ipr_isr(int irq, void *devp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003889{
3890 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3891 unsigned long lock_flags = 0;
3892 volatile u32 int_reg, int_mask_reg;
3893 u32 ioasc;
3894 u16 cmd_index;
3895 struct ipr_cmnd *ipr_cmd;
3896 irqreturn_t rc = IRQ_NONE;
3897
3898 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3899
3900 /* If interrupts are disabled, ignore the interrupt */
3901 if (!ioa_cfg->allow_interrupts) {
3902 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3903 return IRQ_NONE;
3904 }
3905
3906 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3907 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3908
3909 /* If an interrupt on the adapter did not occur, ignore it */
3910 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3911 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3912 return IRQ_NONE;
3913 }
3914
3915 while (1) {
3916 ipr_cmd = NULL;
3917
3918 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3919 ioa_cfg->toggle_bit) {
3920
3921 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3922 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3923
3924 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3925 ioa_cfg->errors_logged++;
3926 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3927
3928 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3929 ioa_cfg->sdt_state = GET_DUMP;
3930
3931 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3932 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3933 return IRQ_HANDLED;
3934 }
3935
3936 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3937
3938 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3939
3940 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3941
3942 list_del(&ipr_cmd->queue);
3943 del_timer(&ipr_cmd->timer);
3944 ipr_cmd->done(ipr_cmd);
3945
3946 rc = IRQ_HANDLED;
3947
3948 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3949 ioa_cfg->hrrq_curr++;
3950 } else {
3951 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3952 ioa_cfg->toggle_bit ^= 1u;
3953 }
3954 }
3955
3956 if (ipr_cmd != NULL) {
3957 /* Clear the PCI interrupt */
3958 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3959 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3960 } else
3961 break;
3962 }
3963
3964 if (unlikely(rc == IRQ_NONE))
3965 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3966
3967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3968 return rc;
3969}
3970
3971/**
3972 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3973 * @ioa_cfg: ioa config struct
3974 * @ipr_cmd: ipr command struct
3975 *
3976 * Return value:
3977 * 0 on success / -1 on failure
3978 **/
3979static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3980 struct ipr_cmnd *ipr_cmd)
3981{
3982 int i;
3983 struct scatterlist *sglist;
3984 u32 length;
3985 u32 ioadl_flags = 0;
3986 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3987 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3988 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3989
3990 length = scsi_cmd->request_bufflen;
3991
3992 if (length == 0)
3993 return 0;
3994
3995 if (scsi_cmd->use_sg) {
3996 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3997 scsi_cmd->request_buffer,
3998 scsi_cmd->use_sg,
3999 scsi_cmd->sc_data_direction);
4000
4001 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4002 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4003 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4004 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4005 ioarcb->write_ioadl_len =
4006 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4007 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4008 ioadl_flags = IPR_IOADL_FLAGS_READ;
4009 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4010 ioarcb->read_ioadl_len =
4011 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4012 }
4013
4014 sglist = scsi_cmd->request_buffer;
4015
4016 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4017 ioadl[i].flags_and_data_len =
4018 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4019 ioadl[i].address =
4020 cpu_to_be32(sg_dma_address(&sglist[i]));
4021 }
4022
4023 if (likely(ipr_cmd->dma_use_sg)) {
4024 ioadl[i-1].flags_and_data_len |=
4025 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4026 return 0;
4027 } else
4028 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4029 } else {
4030 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4031 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4032 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4033 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4034 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4035 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4036 ioadl_flags = IPR_IOADL_FLAGS_READ;
4037 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4038 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4039 }
4040
4041 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4042 scsi_cmd->request_buffer, length,
4043 scsi_cmd->sc_data_direction);
4044
4045 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4046 ipr_cmd->dma_use_sg = 1;
4047 ioadl[0].flags_and_data_len =
4048 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4049 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4050 return 0;
4051 } else
4052 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4053 }
4054
4055 return -1;
4056}
4057
4058/**
4059 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4060 * @scsi_cmd: scsi command struct
4061 *
4062 * Return value:
4063 * task attributes
4064 **/
4065static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4066{
4067 u8 tag[2];
4068 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4069
4070 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4071 switch (tag[0]) {
4072 case MSG_SIMPLE_TAG:
4073 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4074 break;
4075 case MSG_HEAD_TAG:
4076 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4077 break;
4078 case MSG_ORDERED_TAG:
4079 rc = IPR_FLAGS_LO_ORDERED_TASK;
4080 break;
4081 };
4082 }
4083
4084 return rc;
4085}
4086
4087/**
4088 * ipr_erp_done - Process completion of ERP for a device
4089 * @ipr_cmd: ipr command struct
4090 *
4091 * This function copies the sense buffer into the scsi_cmd
4092 * struct and pushes the scsi_done function.
4093 *
4094 * Return value:
4095 * nothing
4096 **/
4097static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4098{
4099 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4100 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4101 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4102 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4103
4104 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4105 scsi_cmd->result |= (DID_ERROR << 16);
Brian Kingfb3ed3c2006-03-29 09:37:37 -06004106 scmd_printk(KERN_ERR, scsi_cmd,
4107 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004108 } else {
4109 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4110 SCSI_SENSE_BUFFERSIZE);
4111 }
4112
4113 if (res) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004114 if (!ipr_is_naca_model(res))
4115 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004116 res->in_erp = 0;
4117 }
4118 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4119 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4120 scsi_cmd->scsi_done(scsi_cmd);
4121}
4122
4123/**
4124 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4125 * @ipr_cmd: ipr command struct
4126 *
4127 * Return value:
4128 * none
4129 **/
4130static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4131{
4132 struct ipr_ioarcb *ioarcb;
4133 struct ipr_ioasa *ioasa;
4134
4135 ioarcb = &ipr_cmd->ioarcb;
4136 ioasa = &ipr_cmd->ioasa;
4137
4138 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4139 ioarcb->write_data_transfer_length = 0;
4140 ioarcb->read_data_transfer_length = 0;
4141 ioarcb->write_ioadl_len = 0;
4142 ioarcb->read_ioadl_len = 0;
4143 ioasa->ioasc = 0;
4144 ioasa->residual_data_len = 0;
4145}
4146
4147/**
4148 * ipr_erp_request_sense - Send request sense to a device
4149 * @ipr_cmd: ipr command struct
4150 *
4151 * This function sends a request sense to a device as a result
4152 * of a check condition.
4153 *
4154 * Return value:
4155 * nothing
4156 **/
4157static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4158{
4159 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4160 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4161
4162 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4163 ipr_erp_done(ipr_cmd);
4164 return;
4165 }
4166
4167 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4168
4169 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4170 cmd_pkt->cdb[0] = REQUEST_SENSE;
4171 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4172 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4173 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4174 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4175
4176 ipr_cmd->ioadl[0].flags_and_data_len =
4177 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4178 ipr_cmd->ioadl[0].address =
4179 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4180
4181 ipr_cmd->ioarcb.read_ioadl_len =
4182 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4183 ipr_cmd->ioarcb.read_data_transfer_length =
4184 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4185
4186 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4187 IPR_REQUEST_SENSE_TIMEOUT * 2);
4188}
4189
4190/**
4191 * ipr_erp_cancel_all - Send cancel all to a device
4192 * @ipr_cmd: ipr command struct
4193 *
4194 * This function sends a cancel all to a device to clear the
4195 * queue. If we are running TCQ on the device, QERR is set to 1,
4196 * which means all outstanding ops have been dropped on the floor.
4197 * Cancel all will return them to us.
4198 *
4199 * Return value:
4200 * nothing
4201 **/
4202static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4203{
4204 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4205 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4206 struct ipr_cmd_pkt *cmd_pkt;
4207
4208 res->in_erp = 1;
4209
4210 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4211
4212 if (!scsi_get_tag_type(scsi_cmd->device)) {
4213 ipr_erp_request_sense(ipr_cmd);
4214 return;
4215 }
4216
4217 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4218 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4219 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4220
4221 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4222 IPR_CANCEL_ALL_TIMEOUT);
4223}
4224
4225/**
4226 * ipr_dump_ioasa - Dump contents of IOASA
4227 * @ioa_cfg: ioa config struct
4228 * @ipr_cmd: ipr command struct
Brian Kingfe964d02006-03-29 09:37:29 -06004229 * @res: resource entry struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07004230 *
4231 * This function is invoked by the interrupt handler when ops
4232 * fail. It will log the IOASA if appropriate. Only called
4233 * for GPDD ops.
4234 *
4235 * Return value:
4236 * none
4237 **/
4238static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
Brian Kingfe964d02006-03-29 09:37:29 -06004239 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07004240{
4241 int i;
4242 u16 data_len;
4243 u32 ioasc;
4244 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4245 __be32 *ioasa_data = (__be32 *)ioasa;
4246 int error_index;
4247
4248 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4249
4250 if (0 == ioasc)
4251 return;
4252
4253 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4254 return;
4255
4256 error_index = ipr_get_error(ioasc);
4257
4258 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4259 /* Don't log an error if the IOA already logged one */
4260 if (ioasa->ilid != 0)
4261 return;
4262
4263 if (ipr_error_table[error_index].log_ioasa == 0)
4264 return;
4265 }
4266
Brian Kingfe964d02006-03-29 09:37:29 -06004267 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004268
4269 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4270 data_len = sizeof(struct ipr_ioasa);
4271 else
4272 data_len = be16_to_cpu(ioasa->ret_stat_len);
4273
4274 ipr_err("IOASA Dump:\n");
4275
4276 for (i = 0; i < data_len / 4; i += 4) {
4277 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4278 be32_to_cpu(ioasa_data[i]),
4279 be32_to_cpu(ioasa_data[i+1]),
4280 be32_to_cpu(ioasa_data[i+2]),
4281 be32_to_cpu(ioasa_data[i+3]));
4282 }
4283}
4284
4285/**
4286 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4287 * @ioasa: IOASA
4288 * @sense_buf: sense data buffer
4289 *
4290 * Return value:
4291 * none
4292 **/
4293static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4294{
4295 u32 failing_lba;
4296 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4297 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4298 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4299 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4300
4301 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4302
4303 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4304 return;
4305
4306 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4307
4308 if (ipr_is_vset_device(res) &&
4309 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4310 ioasa->u.vset.failing_lba_hi != 0) {
4311 sense_buf[0] = 0x72;
4312 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4313 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4314 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4315
4316 sense_buf[7] = 12;
4317 sense_buf[8] = 0;
4318 sense_buf[9] = 0x0A;
4319 sense_buf[10] = 0x80;
4320
4321 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4322
4323 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4324 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4325 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4326 sense_buf[15] = failing_lba & 0x000000ff;
4327
4328 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4329
4330 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4331 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4332 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4333 sense_buf[19] = failing_lba & 0x000000ff;
4334 } else {
4335 sense_buf[0] = 0x70;
4336 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4337 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4338 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4339
4340 /* Illegal request */
4341 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4342 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4343 sense_buf[7] = 10; /* additional length */
4344
4345 /* IOARCB was in error */
4346 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4347 sense_buf[15] = 0xC0;
4348 else /* Parameter data was invalid */
4349 sense_buf[15] = 0x80;
4350
4351 sense_buf[16] =
4352 ((IPR_FIELD_POINTER_MASK &
4353 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4354 sense_buf[17] =
4355 (IPR_FIELD_POINTER_MASK &
4356 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4357 } else {
4358 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4359 if (ipr_is_vset_device(res))
4360 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4361 else
4362 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4363
4364 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4365 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4366 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4367 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4368 sense_buf[6] = failing_lba & 0x000000ff;
4369 }
4370
4371 sense_buf[7] = 6; /* additional length */
4372 }
4373 }
4374}
4375
4376/**
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004377 * ipr_get_autosense - Copy autosense data to sense buffer
4378 * @ipr_cmd: ipr command struct
4379 *
4380 * This function copies the autosense buffer to the buffer
4381 * in the scsi_cmd, if there is autosense available.
4382 *
4383 * Return value:
4384 * 1 if autosense was available / 0 if not
4385 **/
4386static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4387{
4388 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4389
Brian King117d2ce2006-08-02 14:57:58 -05004390 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004391 return 0;
4392
4393 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4394 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4395 SCSI_SENSE_BUFFERSIZE));
4396 return 1;
4397}
4398
4399/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004400 * ipr_erp_start - Process an error response for a SCSI op
4401 * @ioa_cfg: ioa config struct
4402 * @ipr_cmd: ipr command struct
4403 *
4404 * This function determines whether or not to initiate ERP
4405 * on the affected device.
4406 *
4407 * Return value:
4408 * nothing
4409 **/
4410static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4411 struct ipr_cmnd *ipr_cmd)
4412{
4413 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4414 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4415 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4416
4417 if (!res) {
4418 ipr_scsi_eh_done(ipr_cmd);
4419 return;
4420 }
4421
4422 if (ipr_is_gscsi(res))
Brian Kingfe964d02006-03-29 09:37:29 -06004423 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004424 else
4425 ipr_gen_sense(ipr_cmd);
4426
4427 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4428 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004429 if (ipr_is_naca_model(res))
4430 scsi_cmd->result |= (DID_ABORT << 16);
4431 else
4432 scsi_cmd->result |= (DID_IMM_RETRY << 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004433 break;
4434 case IPR_IOASC_IR_RESOURCE_HANDLE:
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004435 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004436 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4437 break;
4438 case IPR_IOASC_HW_SEL_TIMEOUT:
4439 scsi_cmd->result |= (DID_NO_CONNECT << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004440 if (!ipr_is_naca_model(res))
4441 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004442 break;
4443 case IPR_IOASC_SYNC_REQUIRED:
4444 if (!res->in_erp)
4445 res->needs_sync_complete = 1;
4446 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4447 break;
4448 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004449 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004450 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4451 break;
4452 case IPR_IOASC_BUS_WAS_RESET:
4453 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4454 /*
4455 * Report the bus reset and ask for a retry. The device
4456 * will give CC/UA the next command.
4457 */
4458 if (!res->resetting_device)
4459 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4460 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004461 if (!ipr_is_naca_model(res))
4462 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004463 break;
4464 case IPR_IOASC_HW_DEV_BUS_STATUS:
4465 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4466 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004467 if (!ipr_get_autosense(ipr_cmd)) {
4468 if (!ipr_is_naca_model(res)) {
4469 ipr_erp_cancel_all(ipr_cmd);
4470 return;
4471 }
4472 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004473 }
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004474 if (!ipr_is_naca_model(res))
4475 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004476 break;
4477 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4478 break;
4479 default:
Brian King5b7304f2006-08-02 14:57:51 -05004480 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4481 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004482 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004483 res->needs_sync_complete = 1;
4484 break;
4485 }
4486
4487 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4488 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4489 scsi_cmd->scsi_done(scsi_cmd);
4490}
4491
4492/**
4493 * ipr_scsi_done - mid-layer done function
4494 * @ipr_cmd: ipr command struct
4495 *
4496 * This function is invoked by the interrupt handler for
4497 * ops generated by the SCSI mid-layer
4498 *
4499 * Return value:
4500 * none
4501 **/
4502static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4503{
4504 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4505 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4506 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4507
4508 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4509
4510 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4511 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4512 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4513 scsi_cmd->scsi_done(scsi_cmd);
4514 } else
4515 ipr_erp_start(ioa_cfg, ipr_cmd);
4516}
4517
4518/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004519 * ipr_queuecommand - Queue a mid-layer request
4520 * @scsi_cmd: scsi command struct
4521 * @done: done function
4522 *
4523 * This function queues a request generated by the mid-layer.
4524 *
4525 * Return value:
4526 * 0 on success
4527 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4528 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4529 **/
4530static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4531 void (*done) (struct scsi_cmnd *))
4532{
4533 struct ipr_ioa_cfg *ioa_cfg;
4534 struct ipr_resource_entry *res;
4535 struct ipr_ioarcb *ioarcb;
4536 struct ipr_cmnd *ipr_cmd;
4537 int rc = 0;
4538
4539 scsi_cmd->scsi_done = done;
4540 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4541 res = scsi_cmd->device->hostdata;
4542 scsi_cmd->result = (DID_OK << 16);
4543
4544 /*
4545 * We are currently blocking all devices due to a host reset
4546 * We have told the host to stop giving us new requests, but
4547 * ERP ops don't count. FIXME
4548 */
4549 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4550 return SCSI_MLQUEUE_HOST_BUSY;
4551
4552 /*
4553 * FIXME - Create scsi_set_host_offline interface
4554 * and the ioa_is_dead check can be removed
4555 */
4556 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4557 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4558 scsi_cmd->result = (DID_NO_CONNECT << 16);
4559 scsi_cmd->scsi_done(scsi_cmd);
4560 return 0;
4561 }
4562
Brian King35a39692006-09-25 12:39:20 -05004563 if (ipr_is_gata(res) && res->sata_port)
4564 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4565
Linus Torvalds1da177e2005-04-16 15:20:36 -07004566 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4567 ioarcb = &ipr_cmd->ioarcb;
4568 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4569
4570 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4571 ipr_cmd->scsi_cmd = scsi_cmd;
4572 ioarcb->res_handle = res->cfgte.res_handle;
4573 ipr_cmd->done = ipr_scsi_done;
4574 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4575
4576 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4577 if (scsi_cmd->underflow == 0)
4578 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4579
4580 if (res->needs_sync_complete) {
4581 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4582 res->needs_sync_complete = 0;
4583 }
4584
4585 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4586 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4587 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4588 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4589 }
4590
4591 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4592 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4593 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4594
Linus Torvalds1da177e2005-04-16 15:20:36 -07004595 if (likely(rc == 0))
4596 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4597
4598 if (likely(rc == 0)) {
4599 mb();
4600 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4601 ioa_cfg->regs.ioarrin_reg);
4602 } else {
4603 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4604 return SCSI_MLQUEUE_HOST_BUSY;
4605 }
4606
4607 return 0;
4608}
4609
4610/**
Brian King35a39692006-09-25 12:39:20 -05004611 * ipr_ioctl - IOCTL handler
4612 * @sdev: scsi device struct
4613 * @cmd: IOCTL cmd
4614 * @arg: IOCTL arg
4615 *
4616 * Return value:
4617 * 0 on success / other on failure
4618 **/
4619int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4620{
4621 struct ipr_resource_entry *res;
4622
4623 res = (struct ipr_resource_entry *)sdev->hostdata;
4624 if (res && ipr_is_gata(res))
4625 return ata_scsi_ioctl(sdev, cmd, arg);
4626
4627 return -EINVAL;
4628}
4629
4630/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004631 * ipr_info - Get information about the card/driver
4632 * @scsi_host: scsi host struct
4633 *
4634 * Return value:
4635 * pointer to buffer with description string
4636 **/
4637static const char * ipr_ioa_info(struct Scsi_Host *host)
4638{
4639 static char buffer[512];
4640 struct ipr_ioa_cfg *ioa_cfg;
4641 unsigned long lock_flags = 0;
4642
4643 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4644
4645 spin_lock_irqsave(host->host_lock, lock_flags);
4646 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4647 spin_unlock_irqrestore(host->host_lock, lock_flags);
4648
4649 return buffer;
4650}
4651
Brian King35a39692006-09-25 12:39:20 -05004652/**
4653 * ipr_scsi_timed_out - Handle scsi command timeout
4654 * @scsi_cmd: scsi command struct
4655 *
4656 * Return value:
4657 * EH_NOT_HANDLED
4658 **/
4659enum scsi_eh_timer_return ipr_scsi_timed_out(struct scsi_cmnd *scsi_cmd)
4660{
4661 struct ipr_ioa_cfg *ioa_cfg;
4662 struct ipr_cmnd *ipr_cmd;
4663 unsigned long flags;
4664
4665 ENTER;
4666 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4667 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4668
4669 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4670 if (ipr_cmd->qc && ipr_cmd->qc->scsicmd == scsi_cmd) {
4671 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4672 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4673 break;
4674 }
4675 }
4676
4677 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4678 LEAVE;
4679 return EH_NOT_HANDLED;
4680}
4681
4682static struct scsi_transport_template ipr_transport_template = {
4683 .eh_timed_out = ipr_scsi_timed_out
4684};
4685
Linus Torvalds1da177e2005-04-16 15:20:36 -07004686static struct scsi_host_template driver_template = {
4687 .module = THIS_MODULE,
4688 .name = "IPR",
4689 .info = ipr_ioa_info,
Brian King35a39692006-09-25 12:39:20 -05004690 .ioctl = ipr_ioctl,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004691 .queuecommand = ipr_queuecommand,
4692 .eh_abort_handler = ipr_eh_abort,
4693 .eh_device_reset_handler = ipr_eh_dev_reset,
4694 .eh_host_reset_handler = ipr_eh_host_reset,
4695 .slave_alloc = ipr_slave_alloc,
4696 .slave_configure = ipr_slave_configure,
4697 .slave_destroy = ipr_slave_destroy,
Brian King35a39692006-09-25 12:39:20 -05004698 .target_alloc = ipr_target_alloc,
4699 .target_destroy = ipr_target_destroy,
Linus Torvalds1da177e2005-04-16 15:20:36 -07004700 .change_queue_depth = ipr_change_queue_depth,
4701 .change_queue_type = ipr_change_queue_type,
4702 .bios_param = ipr_biosparam,
4703 .can_queue = IPR_MAX_COMMANDS,
4704 .this_id = -1,
4705 .sg_tablesize = IPR_MAX_SGLIST,
4706 .max_sectors = IPR_IOA_MAX_SECTORS,
4707 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4708 .use_clustering = ENABLE_CLUSTERING,
4709 .shost_attrs = ipr_ioa_attrs,
4710 .sdev_attrs = ipr_dev_attrs,
4711 .proc_name = IPR_NAME
4712};
4713
Brian King35a39692006-09-25 12:39:20 -05004714/**
4715 * ipr_ata_phy_reset - libata phy_reset handler
4716 * @ap: ata port to reset
4717 *
4718 **/
4719static void ipr_ata_phy_reset(struct ata_port *ap)
4720{
4721 unsigned long flags;
4722 struct ipr_sata_port *sata_port = ap->private_data;
4723 struct ipr_resource_entry *res = sata_port->res;
4724 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4725 int rc;
4726
4727 ENTER;
4728 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4729 while(ioa_cfg->in_reset_reload) {
4730 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4731 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4732 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4733 }
4734
4735 if (!ioa_cfg->allow_cmds)
4736 goto out_unlock;
4737
4738 rc = ipr_device_reset(ioa_cfg, res);
4739
4740 if (rc) {
4741 ap->ops->port_disable(ap);
4742 goto out_unlock;
4743 }
4744
4745 switch(res->cfgte.proto) {
4746 case IPR_PROTO_SATA:
4747 case IPR_PROTO_SAS_STP:
4748 ap->device[0].class = ATA_DEV_ATA;
4749 break;
4750 case IPR_PROTO_SATA_ATAPI:
4751 case IPR_PROTO_SAS_STP_ATAPI:
4752 ap->device[0].class = ATA_DEV_ATAPI;
4753 break;
4754 default:
4755 ap->device[0].class = ATA_DEV_UNKNOWN;
4756 ap->ops->port_disable(ap);
4757 break;
4758 };
4759
4760out_unlock:
4761 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4762 LEAVE;
4763}
4764
4765/**
4766 * ipr_ata_post_internal - Cleanup after an internal command
4767 * @qc: ATA queued command
4768 *
4769 * Return value:
4770 * none
4771 **/
4772static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4773{
4774 struct ipr_sata_port *sata_port = qc->ap->private_data;
4775 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4776 struct ipr_cmnd *ipr_cmd;
4777 unsigned long flags;
4778
4779 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4780 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4781 if (ipr_cmd->qc == qc) {
4782 ipr_device_reset(ioa_cfg, sata_port->res);
4783 break;
4784 }
4785 }
4786 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4787}
4788
4789/**
4790 * ipr_tf_read - Read the current ATA taskfile for the ATA port
4791 * @ap: ATA port
4792 * @tf: destination ATA taskfile
4793 *
4794 * Return value:
4795 * none
4796 **/
4797static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
4798{
4799 struct ipr_sata_port *sata_port = ap->private_data;
4800 struct ipr_ioasa_gata *g = &sata_port->ioasa;
4801
4802 tf->feature = g->error;
4803 tf->nsect = g->nsect;
4804 tf->lbal = g->lbal;
4805 tf->lbam = g->lbam;
4806 tf->lbah = g->lbah;
4807 tf->device = g->device;
4808 tf->command = g->status;
4809 tf->hob_nsect = g->hob_nsect;
4810 tf->hob_lbal = g->hob_lbal;
4811 tf->hob_lbam = g->hob_lbam;
4812 tf->hob_lbah = g->hob_lbah;
4813 tf->ctl = g->alt_status;
4814}
4815
4816/**
4817 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
4818 * @regs: destination
4819 * @tf: source ATA taskfile
4820 *
4821 * Return value:
4822 * none
4823 **/
4824static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
4825 struct ata_taskfile *tf)
4826{
4827 regs->feature = tf->feature;
4828 regs->nsect = tf->nsect;
4829 regs->lbal = tf->lbal;
4830 regs->lbam = tf->lbam;
4831 regs->lbah = tf->lbah;
4832 regs->device = tf->device;
4833 regs->command = tf->command;
4834 regs->hob_feature = tf->hob_feature;
4835 regs->hob_nsect = tf->hob_nsect;
4836 regs->hob_lbal = tf->hob_lbal;
4837 regs->hob_lbam = tf->hob_lbam;
4838 regs->hob_lbah = tf->hob_lbah;
4839 regs->ctl = tf->ctl;
4840}
4841
4842/**
4843 * ipr_sata_done - done function for SATA commands
4844 * @ipr_cmd: ipr command struct
4845 *
4846 * This function is invoked by the interrupt handler for
4847 * ops generated by the SCSI mid-layer to SATA devices
4848 *
4849 * Return value:
4850 * none
4851 **/
4852static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
4853{
4854 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4855 struct ata_queued_cmd *qc = ipr_cmd->qc;
4856 struct ipr_sata_port *sata_port = qc->ap->private_data;
4857 struct ipr_resource_entry *res = sata_port->res;
4858 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4859
4860 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
4861 sizeof(struct ipr_ioasa_gata));
4862 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4863
4864 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
4865 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
4866 res->cfgte.res_addr.target);
4867
4868 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4869 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
4870 else
4871 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
4872 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4873 ata_qc_complete(qc);
4874}
4875
4876/**
4877 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
4878 * @ipr_cmd: ipr command struct
4879 * @qc: ATA queued command
4880 *
4881 **/
4882static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
4883 struct ata_queued_cmd *qc)
4884{
4885 u32 ioadl_flags = 0;
4886 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4887 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4888 int len = qc->nbytes + qc->pad_len;
4889 struct scatterlist *sg;
4890
4891 if (len == 0)
4892 return;
4893
4894 if (qc->dma_dir == DMA_TO_DEVICE) {
4895 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4896 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4897 ioarcb->write_data_transfer_length = cpu_to_be32(len);
4898 ioarcb->write_ioadl_len =
4899 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4900 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
4901 ioadl_flags = IPR_IOADL_FLAGS_READ;
4902 ioarcb->read_data_transfer_length = cpu_to_be32(len);
4903 ioarcb->read_ioadl_len =
4904 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4905 }
4906
4907 ata_for_each_sg(sg, qc) {
4908 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4909 ioadl->address = cpu_to_be32(sg_dma_address(sg));
4910 if (ata_sg_is_last(sg, qc))
4911 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4912 else
4913 ioadl++;
4914 }
4915}
4916
4917/**
4918 * ipr_qc_issue - Issue a SATA qc to a device
4919 * @qc: queued command
4920 *
4921 * Return value:
4922 * 0 if success
4923 **/
4924static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
4925{
4926 struct ata_port *ap = qc->ap;
4927 struct ipr_sata_port *sata_port = ap->private_data;
4928 struct ipr_resource_entry *res = sata_port->res;
4929 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4930 struct ipr_cmnd *ipr_cmd;
4931 struct ipr_ioarcb *ioarcb;
4932 struct ipr_ioarcb_ata_regs *regs;
4933
4934 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
4935 return -EIO;
4936
4937 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4938 ioarcb = &ipr_cmd->ioarcb;
4939 regs = &ioarcb->add_data.u.regs;
4940
4941 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
4942 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
4943
4944 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4945 ipr_cmd->qc = qc;
4946 ipr_cmd->done = ipr_sata_done;
4947 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4948 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
4949 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4950 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4951 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
4952
4953 ipr_build_ata_ioadl(ipr_cmd, qc);
4954 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4955 ipr_copy_sata_tf(regs, &qc->tf);
4956 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
4957 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4958
4959 switch (qc->tf.protocol) {
4960 case ATA_PROT_NODATA:
4961 case ATA_PROT_PIO:
4962 break;
4963
4964 case ATA_PROT_DMA:
4965 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
4966 break;
4967
4968 case ATA_PROT_ATAPI:
4969 case ATA_PROT_ATAPI_NODATA:
4970 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
4971 break;
4972
4973 case ATA_PROT_ATAPI_DMA:
4974 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
4975 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
4976 break;
4977
4978 default:
4979 WARN_ON(1);
4980 return -1;
4981 }
4982
4983 mb();
4984 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
4985 ioa_cfg->regs.ioarrin_reg);
4986 return 0;
4987}
4988
4989/**
4990 * ipr_ata_check_status - Return last ATA status
4991 * @ap: ATA port
4992 *
4993 * Return value:
4994 * ATA status
4995 **/
4996static u8 ipr_ata_check_status(struct ata_port *ap)
4997{
4998 struct ipr_sata_port *sata_port = ap->private_data;
4999 return sata_port->ioasa.status;
5000}
5001
5002/**
5003 * ipr_ata_check_altstatus - Return last ATA altstatus
5004 * @ap: ATA port
5005 *
5006 * Return value:
5007 * Alt ATA status
5008 **/
5009static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5010{
5011 struct ipr_sata_port *sata_port = ap->private_data;
5012 return sata_port->ioasa.alt_status;
5013}
5014
5015static struct ata_port_operations ipr_sata_ops = {
5016 .port_disable = ata_port_disable,
5017 .check_status = ipr_ata_check_status,
5018 .check_altstatus = ipr_ata_check_altstatus,
5019 .dev_select = ata_noop_dev_select,
5020 .phy_reset = ipr_ata_phy_reset,
5021 .post_internal_cmd = ipr_ata_post_internal,
5022 .tf_read = ipr_tf_read,
5023 .qc_prep = ata_noop_qc_prep,
5024 .qc_issue = ipr_qc_issue,
5025 .port_start = ata_sas_port_start,
5026 .port_stop = ata_sas_port_stop
5027};
5028
5029static struct ata_port_info sata_port_info = {
5030 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5031 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5032 .pio_mask = 0x10, /* pio4 */
5033 .mwdma_mask = 0x07,
5034 .udma_mask = 0x7f, /* udma0-6 */
5035 .port_ops = &ipr_sata_ops
5036};
5037
Linus Torvalds1da177e2005-04-16 15:20:36 -07005038#ifdef CONFIG_PPC_PSERIES
5039static const u16 ipr_blocked_processors[] = {
5040 PV_NORTHSTAR,
5041 PV_PULSAR,
5042 PV_POWER4,
5043 PV_ICESTAR,
5044 PV_SSTAR,
5045 PV_POWER4p,
5046 PV_630,
5047 PV_630p
5048};
5049
5050/**
5051 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5052 * @ioa_cfg: ioa cfg struct
5053 *
5054 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5055 * certain pSeries hardware. This function determines if the given
5056 * adapter is in one of these confgurations or not.
5057 *
5058 * Return value:
5059 * 1 if adapter is not supported / 0 if adapter is supported
5060 **/
5061static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5062{
5063 u8 rev_id;
5064 int i;
5065
5066 if (ioa_cfg->type == 0x5702) {
5067 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5068 &rev_id) == PCIBIOS_SUCCESSFUL) {
5069 if (rev_id < 4) {
5070 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5071 if (__is_processor(ipr_blocked_processors[i]))
5072 return 1;
5073 }
5074 }
5075 }
5076 }
5077 return 0;
5078}
5079#else
5080#define ipr_invalid_adapter(ioa_cfg) 0
5081#endif
5082
5083/**
5084 * ipr_ioa_bringdown_done - IOA bring down completion.
5085 * @ipr_cmd: ipr command struct
5086 *
5087 * This function processes the completion of an adapter bring down.
5088 * It wakes any reset sleepers.
5089 *
5090 * Return value:
5091 * IPR_RC_JOB_RETURN
5092 **/
5093static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5094{
5095 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5096
5097 ENTER;
5098 ioa_cfg->in_reset_reload = 0;
5099 ioa_cfg->reset_retries = 0;
5100 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5101 wake_up_all(&ioa_cfg->reset_wait_q);
5102
5103 spin_unlock_irq(ioa_cfg->host->host_lock);
5104 scsi_unblock_requests(ioa_cfg->host);
5105 spin_lock_irq(ioa_cfg->host->host_lock);
5106 LEAVE;
5107
5108 return IPR_RC_JOB_RETURN;
5109}
5110
5111/**
5112 * ipr_ioa_reset_done - IOA reset completion.
5113 * @ipr_cmd: ipr command struct
5114 *
5115 * This function processes the completion of an adapter reset.
5116 * It schedules any necessary mid-layer add/removes and
5117 * wakes any reset sleepers.
5118 *
5119 * Return value:
5120 * IPR_RC_JOB_RETURN
5121 **/
5122static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5123{
5124 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5125 struct ipr_resource_entry *res;
5126 struct ipr_hostrcb *hostrcb, *temp;
5127 int i = 0;
5128
5129 ENTER;
5130 ioa_cfg->in_reset_reload = 0;
5131 ioa_cfg->allow_cmds = 1;
5132 ioa_cfg->reset_cmd = NULL;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06005133 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005134
5135 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5136 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5137 ipr_trace;
5138 break;
5139 }
5140 }
5141 schedule_work(&ioa_cfg->work_q);
5142
5143 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5144 list_del(&hostrcb->queue);
5145 if (i++ < IPR_NUM_LOG_HCAMS)
5146 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5147 else
5148 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5149 }
5150
5151 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5152
5153 ioa_cfg->reset_retries = 0;
5154 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5155 wake_up_all(&ioa_cfg->reset_wait_q);
5156
5157 spin_unlock_irq(ioa_cfg->host->host_lock);
5158 scsi_unblock_requests(ioa_cfg->host);
5159 spin_lock_irq(ioa_cfg->host->host_lock);
5160
5161 if (!ioa_cfg->allow_cmds)
5162 scsi_block_requests(ioa_cfg->host);
5163
5164 LEAVE;
5165 return IPR_RC_JOB_RETURN;
5166}
5167
5168/**
5169 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5170 * @supported_dev: supported device struct
5171 * @vpids: vendor product id struct
5172 *
5173 * Return value:
5174 * none
5175 **/
5176static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5177 struct ipr_std_inq_vpids *vpids)
5178{
5179 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5180 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5181 supported_dev->num_records = 1;
5182 supported_dev->data_length =
5183 cpu_to_be16(sizeof(struct ipr_supported_device));
5184 supported_dev->reserved = 0;
5185}
5186
5187/**
5188 * ipr_set_supported_devs - Send Set Supported Devices for a device
5189 * @ipr_cmd: ipr command struct
5190 *
5191 * This function send a Set Supported Devices to the adapter
5192 *
5193 * Return value:
5194 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5195 **/
5196static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5197{
5198 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5199 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5200 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5201 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5202 struct ipr_resource_entry *res = ipr_cmd->u.res;
5203
5204 ipr_cmd->job_step = ipr_ioa_reset_done;
5205
5206 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
Brian Kinge4fbf442006-03-29 09:37:22 -06005207 if (!ipr_is_scsi_disk(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07005208 continue;
5209
5210 ipr_cmd->u.res = res;
5211 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5212
5213 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5214 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5215 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5216
5217 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5218 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5219 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5220
5221 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5222 sizeof(struct ipr_supported_device));
5223 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5224 offsetof(struct ipr_misc_cbs, supp_dev));
5225 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5226 ioarcb->write_data_transfer_length =
5227 cpu_to_be32(sizeof(struct ipr_supported_device));
5228
5229 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5230 IPR_SET_SUP_DEVICE_TIMEOUT);
5231
5232 ipr_cmd->job_step = ipr_set_supported_devs;
5233 return IPR_RC_JOB_RETURN;
5234 }
5235
5236 return IPR_RC_JOB_CONTINUE;
5237}
5238
5239/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06005240 * ipr_setup_write_cache - Disable write cache if needed
5241 * @ipr_cmd: ipr command struct
5242 *
5243 * This function sets up adapters write cache to desired setting
5244 *
5245 * Return value:
5246 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5247 **/
5248static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5249{
5250 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5251
5252 ipr_cmd->job_step = ipr_set_supported_devs;
5253 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5254 struct ipr_resource_entry, queue);
5255
5256 if (ioa_cfg->cache_state != CACHE_DISABLED)
5257 return IPR_RC_JOB_CONTINUE;
5258
5259 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5260 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5261 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5262 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5263
5264 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5265
5266 return IPR_RC_JOB_RETURN;
5267}
5268
5269/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005270 * ipr_get_mode_page - Locate specified mode page
5271 * @mode_pages: mode page buffer
5272 * @page_code: page code to find
5273 * @len: minimum required length for mode page
5274 *
5275 * Return value:
5276 * pointer to mode page / NULL on failure
5277 **/
5278static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5279 u32 page_code, u32 len)
5280{
5281 struct ipr_mode_page_hdr *mode_hdr;
5282 u32 page_length;
5283 u32 length;
5284
5285 if (!mode_pages || (mode_pages->hdr.length == 0))
5286 return NULL;
5287
5288 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5289 mode_hdr = (struct ipr_mode_page_hdr *)
5290 (mode_pages->data + mode_pages->hdr.block_desc_len);
5291
5292 while (length) {
5293 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5294 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5295 return mode_hdr;
5296 break;
5297 } else {
5298 page_length = (sizeof(struct ipr_mode_page_hdr) +
5299 mode_hdr->page_length);
5300 length -= page_length;
5301 mode_hdr = (struct ipr_mode_page_hdr *)
5302 ((unsigned long)mode_hdr + page_length);
5303 }
5304 }
5305 return NULL;
5306}
5307
5308/**
5309 * ipr_check_term_power - Check for term power errors
5310 * @ioa_cfg: ioa config struct
5311 * @mode_pages: IOAFP mode pages buffer
5312 *
5313 * Check the IOAFP's mode page 28 for term power errors
5314 *
5315 * Return value:
5316 * nothing
5317 **/
5318static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5319 struct ipr_mode_pages *mode_pages)
5320{
5321 int i;
5322 int entry_length;
5323 struct ipr_dev_bus_entry *bus;
5324 struct ipr_mode_page28 *mode_page;
5325
5326 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5327 sizeof(struct ipr_mode_page28));
5328
5329 entry_length = mode_page->entry_length;
5330
5331 bus = mode_page->bus;
5332
5333 for (i = 0; i < mode_page->num_entries; i++) {
5334 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5335 dev_err(&ioa_cfg->pdev->dev,
5336 "Term power is absent on scsi bus %d\n",
5337 bus->res_addr.bus);
5338 }
5339
5340 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5341 }
5342}
5343
5344/**
5345 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5346 * @ioa_cfg: ioa config struct
5347 *
5348 * Looks through the config table checking for SES devices. If
5349 * the SES device is in the SES table indicating a maximum SCSI
5350 * bus speed, the speed is limited for the bus.
5351 *
5352 * Return value:
5353 * none
5354 **/
5355static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5356{
5357 u32 max_xfer_rate;
5358 int i;
5359
5360 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5361 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5362 ioa_cfg->bus_attr[i].bus_width);
5363
5364 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5365 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5366 }
5367}
5368
5369/**
5370 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5371 * @ioa_cfg: ioa config struct
5372 * @mode_pages: mode page 28 buffer
5373 *
5374 * Updates mode page 28 based on driver configuration
5375 *
5376 * Return value:
5377 * none
5378 **/
5379static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5380 struct ipr_mode_pages *mode_pages)
5381{
5382 int i, entry_length;
5383 struct ipr_dev_bus_entry *bus;
5384 struct ipr_bus_attributes *bus_attr;
5385 struct ipr_mode_page28 *mode_page;
5386
5387 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5388 sizeof(struct ipr_mode_page28));
5389
5390 entry_length = mode_page->entry_length;
5391
5392 /* Loop for each device bus entry */
5393 for (i = 0, bus = mode_page->bus;
5394 i < mode_page->num_entries;
5395 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5396 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5397 dev_err(&ioa_cfg->pdev->dev,
5398 "Invalid resource address reported: 0x%08X\n",
5399 IPR_GET_PHYS_LOC(bus->res_addr));
5400 continue;
5401 }
5402
5403 bus_attr = &ioa_cfg->bus_attr[i];
5404 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5405 bus->bus_width = bus_attr->bus_width;
5406 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5407 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5408 if (bus_attr->qas_enabled)
5409 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5410 else
5411 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5412 }
5413}
5414
5415/**
5416 * ipr_build_mode_select - Build a mode select command
5417 * @ipr_cmd: ipr command struct
5418 * @res_handle: resource handle to send command to
5419 * @parm: Byte 2 of Mode Sense command
5420 * @dma_addr: DMA buffer address
5421 * @xfer_len: data transfer length
5422 *
5423 * Return value:
5424 * none
5425 **/
5426static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5427 __be32 res_handle, u8 parm, u32 dma_addr,
5428 u8 xfer_len)
5429{
5430 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5431 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5432
5433 ioarcb->res_handle = res_handle;
5434 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5435 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5436 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5437 ioarcb->cmd_pkt.cdb[1] = parm;
5438 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5439
5440 ioadl->flags_and_data_len =
5441 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5442 ioadl->address = cpu_to_be32(dma_addr);
5443 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5444 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5445}
5446
5447/**
5448 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5449 * @ipr_cmd: ipr command struct
5450 *
5451 * This function sets up the SCSI bus attributes and sends
5452 * a Mode Select for Page 28 to activate them.
5453 *
5454 * Return value:
5455 * IPR_RC_JOB_RETURN
5456 **/
5457static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5458{
5459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5460 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5461 int length;
5462
5463 ENTER;
Brian King47338042006-02-08 20:57:42 -06005464 ipr_scsi_bus_speed_limit(ioa_cfg);
5465 ipr_check_term_power(ioa_cfg, mode_pages);
5466 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5467 length = mode_pages->hdr.length + 1;
5468 mode_pages->hdr.length = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005469
5470 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5471 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5472 length);
5473
brking@us.ibm.com62275042005-11-01 17:01:14 -06005474 ipr_cmd->job_step = ipr_setup_write_cache;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005475 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5476
5477 LEAVE;
5478 return IPR_RC_JOB_RETURN;
5479}
5480
5481/**
5482 * ipr_build_mode_sense - Builds a mode sense command
5483 * @ipr_cmd: ipr command struct
5484 * @res: resource entry struct
5485 * @parm: Byte 2 of mode sense command
5486 * @dma_addr: DMA address of mode sense buffer
5487 * @xfer_len: Size of DMA buffer
5488 *
5489 * Return value:
5490 * none
5491 **/
5492static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5493 __be32 res_handle,
5494 u8 parm, u32 dma_addr, u8 xfer_len)
5495{
5496 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5497 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5498
5499 ioarcb->res_handle = res_handle;
5500 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5501 ioarcb->cmd_pkt.cdb[2] = parm;
5502 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5503 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5504
5505 ioadl->flags_and_data_len =
5506 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5507 ioadl->address = cpu_to_be32(dma_addr);
5508 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5509 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5510}
5511
5512/**
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005513 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5514 * @ipr_cmd: ipr command struct
5515 *
5516 * This function handles the failure of an IOA bringup command.
5517 *
5518 * Return value:
5519 * IPR_RC_JOB_RETURN
5520 **/
5521static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5522{
5523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5524 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5525
5526 dev_err(&ioa_cfg->pdev->dev,
5527 "0x%02X failed with IOASC: 0x%08X\n",
5528 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5529
5530 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5531 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5532 return IPR_RC_JOB_RETURN;
5533}
5534
5535/**
5536 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5537 * @ipr_cmd: ipr command struct
5538 *
5539 * This function handles the failure of a Mode Sense to the IOAFP.
5540 * Some adapters do not handle all mode pages.
5541 *
5542 * Return value:
5543 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5544 **/
5545static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5546{
5547 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5548
5549 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5550 ipr_cmd->job_step = ipr_setup_write_cache;
5551 return IPR_RC_JOB_CONTINUE;
5552 }
5553
5554 return ipr_reset_cmd_failed(ipr_cmd);
5555}
5556
5557/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005558 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5559 * @ipr_cmd: ipr command struct
5560 *
5561 * This function send a Page 28 mode sense to the IOA to
5562 * retrieve SCSI bus attributes.
5563 *
5564 * Return value:
5565 * IPR_RC_JOB_RETURN
5566 **/
5567static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5568{
5569 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5570
5571 ENTER;
5572 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5573 0x28, ioa_cfg->vpd_cbs_dma +
5574 offsetof(struct ipr_misc_cbs, mode_pages),
5575 sizeof(struct ipr_mode_pages));
5576
5577 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005578 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005579
5580 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5581
5582 LEAVE;
5583 return IPR_RC_JOB_RETURN;
5584}
5585
5586/**
5587 * ipr_init_res_table - Initialize the resource table
5588 * @ipr_cmd: ipr command struct
5589 *
5590 * This function looks through the existing resource table, comparing
5591 * it with the config table. This function will take care of old/new
5592 * devices and schedule adding/removing them from the mid-layer
5593 * as appropriate.
5594 *
5595 * Return value:
5596 * IPR_RC_JOB_CONTINUE
5597 **/
5598static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5599{
5600 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5601 struct ipr_resource_entry *res, *temp;
5602 struct ipr_config_table_entry *cfgte;
5603 int found, i;
5604 LIST_HEAD(old_res);
5605
5606 ENTER;
5607 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5608 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5609
5610 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5611 list_move_tail(&res->queue, &old_res);
5612
5613 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5614 cfgte = &ioa_cfg->cfg_table->dev[i];
5615 found = 0;
5616
5617 list_for_each_entry_safe(res, temp, &old_res, queue) {
5618 if (!memcmp(&res->cfgte.res_addr,
5619 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5620 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5621 found = 1;
5622 break;
5623 }
5624 }
5625
5626 if (!found) {
5627 if (list_empty(&ioa_cfg->free_res_q)) {
5628 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5629 break;
5630 }
5631
5632 found = 1;
5633 res = list_entry(ioa_cfg->free_res_q.next,
5634 struct ipr_resource_entry, queue);
5635 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5636 ipr_init_res_entry(res);
5637 res->add_to_ml = 1;
5638 }
5639
5640 if (found)
5641 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5642 }
5643
5644 list_for_each_entry_safe(res, temp, &old_res, queue) {
5645 if (res->sdev) {
5646 res->del_from_ml = 1;
Brian King1121b792006-03-29 09:37:16 -06005647 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005648 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5649 } else {
5650 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5651 }
5652 }
5653
5654 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5655
5656 LEAVE;
5657 return IPR_RC_JOB_CONTINUE;
5658}
5659
5660/**
5661 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5662 * @ipr_cmd: ipr command struct
5663 *
5664 * This function sends a Query IOA Configuration command
5665 * to the adapter to retrieve the IOA configuration table.
5666 *
5667 * Return value:
5668 * IPR_RC_JOB_RETURN
5669 **/
5670static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5671{
5672 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5673 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5674 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5675 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5676
5677 ENTER;
5678 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5679 ucode_vpd->major_release, ucode_vpd->card_type,
5680 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5681 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5682 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5683
5684 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5685 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5686 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5687
5688 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5689 ioarcb->read_data_transfer_length =
5690 cpu_to_be32(sizeof(struct ipr_config_table));
5691
5692 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5693 ioadl->flags_and_data_len =
5694 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5695
5696 ipr_cmd->job_step = ipr_init_res_table;
5697
5698 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5699
5700 LEAVE;
5701 return IPR_RC_JOB_RETURN;
5702}
5703
5704/**
5705 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5706 * @ipr_cmd: ipr command struct
5707 *
5708 * This utility function sends an inquiry to the adapter.
5709 *
5710 * Return value:
5711 * none
5712 **/
5713static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5714 u32 dma_addr, u8 xfer_len)
5715{
5716 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5717 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5718
5719 ENTER;
5720 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5721 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5722
5723 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5724 ioarcb->cmd_pkt.cdb[1] = flags;
5725 ioarcb->cmd_pkt.cdb[2] = page;
5726 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5727
5728 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5729 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5730
5731 ioadl->address = cpu_to_be32(dma_addr);
5732 ioadl->flags_and_data_len =
5733 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5734
5735 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5736 LEAVE;
5737}
5738
5739/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06005740 * ipr_inquiry_page_supported - Is the given inquiry page supported
5741 * @page0: inquiry page 0 buffer
5742 * @page: page code.
5743 *
5744 * This function determines if the specified inquiry page is supported.
5745 *
5746 * Return value:
5747 * 1 if page is supported / 0 if not
5748 **/
5749static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5750{
5751 int i;
5752
5753 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5754 if (page0->page[i] == page)
5755 return 1;
5756
5757 return 0;
5758}
5759
5760/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005761 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5762 * @ipr_cmd: ipr command struct
5763 *
5764 * This function sends a Page 3 inquiry to the adapter
5765 * to retrieve software VPD information.
5766 *
5767 * Return value:
5768 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5769 **/
5770static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5771{
5772 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005773 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5774
5775 ENTER;
5776
5777 if (!ipr_inquiry_page_supported(page0, 1))
5778 ioa_cfg->cache_state = CACHE_NONE;
5779
5780 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5781
5782 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5783 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5784 sizeof(struct ipr_inquiry_page3));
5785
5786 LEAVE;
5787 return IPR_RC_JOB_RETURN;
5788}
5789
5790/**
5791 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5792 * @ipr_cmd: ipr command struct
5793 *
5794 * This function sends a Page 0 inquiry to the adapter
5795 * to retrieve supported inquiry pages.
5796 *
5797 * Return value:
5798 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5799 **/
5800static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5801{
5802 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005803 char type[5];
5804
5805 ENTER;
5806
5807 /* Grab the type out of the VPD and store it away */
5808 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5809 type[4] = '\0';
5810 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5811
brking@us.ibm.com62275042005-11-01 17:01:14 -06005812 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005813
brking@us.ibm.com62275042005-11-01 17:01:14 -06005814 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
5815 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
5816 sizeof(struct ipr_inquiry_page0));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005817
5818 LEAVE;
5819 return IPR_RC_JOB_RETURN;
5820}
5821
5822/**
5823 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
5824 * @ipr_cmd: ipr command struct
5825 *
5826 * This function sends a standard inquiry to the adapter.
5827 *
5828 * Return value:
5829 * IPR_RC_JOB_RETURN
5830 **/
5831static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
5832{
5833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5834
5835 ENTER;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005836 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005837
5838 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
5839 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
5840 sizeof(struct ipr_ioa_vpd));
5841
5842 LEAVE;
5843 return IPR_RC_JOB_RETURN;
5844}
5845
5846/**
5847 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
5848 * @ipr_cmd: ipr command struct
5849 *
5850 * This function send an Identify Host Request Response Queue
5851 * command to establish the HRRQ with the adapter.
5852 *
5853 * Return value:
5854 * IPR_RC_JOB_RETURN
5855 **/
5856static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
5857{
5858 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5859 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5860
5861 ENTER;
5862 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
5863
5864 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
5865 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5866
5867 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5868 ioarcb->cmd_pkt.cdb[2] =
5869 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
5870 ioarcb->cmd_pkt.cdb[3] =
5871 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
5872 ioarcb->cmd_pkt.cdb[4] =
5873 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
5874 ioarcb->cmd_pkt.cdb[5] =
5875 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
5876 ioarcb->cmd_pkt.cdb[7] =
5877 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
5878 ioarcb->cmd_pkt.cdb[8] =
5879 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
5880
5881 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
5882
5883 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5884
5885 LEAVE;
5886 return IPR_RC_JOB_RETURN;
5887}
5888
5889/**
5890 * ipr_reset_timer_done - Adapter reset timer function
5891 * @ipr_cmd: ipr command struct
5892 *
5893 * Description: This function is used in adapter reset processing
5894 * for timing events. If the reset_cmd pointer in the IOA
5895 * config struct is not this adapter's we are doing nested
5896 * resets and fail_all_ops will take care of freeing the
5897 * command block.
5898 *
5899 * Return value:
5900 * none
5901 **/
5902static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
5903{
5904 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5905 unsigned long lock_flags = 0;
5906
5907 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5908
5909 if (ioa_cfg->reset_cmd == ipr_cmd) {
5910 list_del(&ipr_cmd->queue);
5911 ipr_cmd->done(ipr_cmd);
5912 }
5913
5914 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5915}
5916
5917/**
5918 * ipr_reset_start_timer - Start a timer for adapter reset job
5919 * @ipr_cmd: ipr command struct
5920 * @timeout: timeout value
5921 *
5922 * Description: This function is used in adapter reset processing
5923 * for timing events. If the reset_cmd pointer in the IOA
5924 * config struct is not this adapter's we are doing nested
5925 * resets and fail_all_ops will take care of freeing the
5926 * command block.
5927 *
5928 * Return value:
5929 * none
5930 **/
5931static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
5932 unsigned long timeout)
5933{
5934 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5935 ipr_cmd->done = ipr_reset_ioa_job;
5936
5937 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5938 ipr_cmd->timer.expires = jiffies + timeout;
5939 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
5940 add_timer(&ipr_cmd->timer);
5941}
5942
5943/**
5944 * ipr_init_ioa_mem - Initialize ioa_cfg control block
5945 * @ioa_cfg: ioa cfg struct
5946 *
5947 * Return value:
5948 * nothing
5949 **/
5950static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
5951{
5952 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
5953
5954 /* Initialize Host RRQ pointers */
5955 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
5956 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
5957 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5958 ioa_cfg->toggle_bit = 1;
5959
5960 /* Zero out config table */
5961 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
5962}
5963
5964/**
5965 * ipr_reset_enable_ioa - Enable the IOA following a reset.
5966 * @ipr_cmd: ipr command struct
5967 *
5968 * This function reinitializes some control blocks and
5969 * enables destructive diagnostics on the adapter.
5970 *
5971 * Return value:
5972 * IPR_RC_JOB_RETURN
5973 **/
5974static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
5975{
5976 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5977 volatile u32 int_reg;
5978
5979 ENTER;
5980 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
5981 ipr_init_ioa_mem(ioa_cfg);
5982
5983 ioa_cfg->allow_interrupts = 1;
5984 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5985
5986 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5987 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
5988 ioa_cfg->regs.clr_interrupt_mask_reg);
5989 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5990 return IPR_RC_JOB_CONTINUE;
5991 }
5992
5993 /* Enable destructive diagnostics on IOA */
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06005994 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005995
5996 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
5997 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5998
5999 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6000
6001 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6002 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
6003 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6004 ipr_cmd->done = ipr_reset_ioa_job;
6005 add_timer(&ipr_cmd->timer);
6006 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6007
6008 LEAVE;
6009 return IPR_RC_JOB_RETURN;
6010}
6011
6012/**
6013 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6014 * @ipr_cmd: ipr command struct
6015 *
6016 * This function is invoked when an adapter dump has run out
6017 * of processing time.
6018 *
6019 * Return value:
6020 * IPR_RC_JOB_CONTINUE
6021 **/
6022static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6023{
6024 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6025
6026 if (ioa_cfg->sdt_state == GET_DUMP)
6027 ioa_cfg->sdt_state = ABORT_DUMP;
6028
6029 ipr_cmd->job_step = ipr_reset_alert;
6030
6031 return IPR_RC_JOB_CONTINUE;
6032}
6033
6034/**
6035 * ipr_unit_check_no_data - Log a unit check/no data error log
6036 * @ioa_cfg: ioa config struct
6037 *
6038 * Logs an error indicating the adapter unit checked, but for some
6039 * reason, we were unable to fetch the unit check buffer.
6040 *
6041 * Return value:
6042 * nothing
6043 **/
6044static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6045{
6046 ioa_cfg->errors_logged++;
6047 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6048}
6049
6050/**
6051 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6052 * @ioa_cfg: ioa config struct
6053 *
6054 * Fetches the unit check buffer from the adapter by clocking the data
6055 * through the mailbox register.
6056 *
6057 * Return value:
6058 * nothing
6059 **/
6060static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6061{
6062 unsigned long mailbox;
6063 struct ipr_hostrcb *hostrcb;
6064 struct ipr_uc_sdt sdt;
6065 int rc, length;
6066
6067 mailbox = readl(ioa_cfg->ioa_mailbox);
6068
6069 if (!ipr_sdt_is_fmt2(mailbox)) {
6070 ipr_unit_check_no_data(ioa_cfg);
6071 return;
6072 }
6073
6074 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6075 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6076 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6077
6078 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6079 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6080 ipr_unit_check_no_data(ioa_cfg);
6081 return;
6082 }
6083
6084 /* Find length of the first sdt entry (UC buffer) */
6085 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6086 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6087
6088 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6089 struct ipr_hostrcb, queue);
6090 list_del(&hostrcb->queue);
6091 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6092
6093 rc = ipr_get_ldump_data_section(ioa_cfg,
6094 be32_to_cpu(sdt.entry[0].bar_str_offset),
6095 (__be32 *)&hostrcb->hcam,
6096 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6097
6098 if (!rc)
6099 ipr_handle_log_data(ioa_cfg, hostrcb);
6100 else
6101 ipr_unit_check_no_data(ioa_cfg);
6102
6103 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6104}
6105
6106/**
6107 * ipr_reset_restore_cfg_space - Restore PCI config space.
6108 * @ipr_cmd: ipr command struct
6109 *
6110 * Description: This function restores the saved PCI config space of
6111 * the adapter, fails all outstanding ops back to the callers, and
6112 * fetches the dump/unit check if applicable to this reset.
6113 *
6114 * Return value:
6115 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6116 **/
6117static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6118{
6119 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6120 int rc;
6121
6122 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07006123 pci_unblock_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006124 rc = pci_restore_state(ioa_cfg->pdev);
6125
6126 if (rc != PCIBIOS_SUCCESSFUL) {
6127 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6128 return IPR_RC_JOB_CONTINUE;
6129 }
6130
6131 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6132 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6133 return IPR_RC_JOB_CONTINUE;
6134 }
6135
6136 ipr_fail_all_ops(ioa_cfg);
6137
6138 if (ioa_cfg->ioa_unit_checked) {
6139 ioa_cfg->ioa_unit_checked = 0;
6140 ipr_get_unit_check_buffer(ioa_cfg);
6141 ipr_cmd->job_step = ipr_reset_alert;
6142 ipr_reset_start_timer(ipr_cmd, 0);
6143 return IPR_RC_JOB_RETURN;
6144 }
6145
6146 if (ioa_cfg->in_ioa_bringdown) {
6147 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6148 } else {
6149 ipr_cmd->job_step = ipr_reset_enable_ioa;
6150
6151 if (GET_DUMP == ioa_cfg->sdt_state) {
6152 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6153 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6154 schedule_work(&ioa_cfg->work_q);
6155 return IPR_RC_JOB_RETURN;
6156 }
6157 }
6158
6159 ENTER;
6160 return IPR_RC_JOB_CONTINUE;
6161}
6162
6163/**
6164 * ipr_reset_start_bist - Run BIST on the adapter.
6165 * @ipr_cmd: ipr command struct
6166 *
6167 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6168 *
6169 * Return value:
6170 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6171 **/
6172static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6173{
6174 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6175 int rc;
6176
6177 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07006178 pci_block_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006179 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6180
6181 if (rc != PCIBIOS_SUCCESSFUL) {
6182 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6183 rc = IPR_RC_JOB_CONTINUE;
6184 } else {
6185 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6186 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6187 rc = IPR_RC_JOB_RETURN;
6188 }
6189
6190 LEAVE;
6191 return rc;
6192}
6193
6194/**
6195 * ipr_reset_allowed - Query whether or not IOA can be reset
6196 * @ioa_cfg: ioa config struct
6197 *
6198 * Return value:
6199 * 0 if reset not allowed / non-zero if reset is allowed
6200 **/
6201static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6202{
6203 volatile u32 temp_reg;
6204
6205 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6206 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6207}
6208
6209/**
6210 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6211 * @ipr_cmd: ipr command struct
6212 *
6213 * Description: This function waits for adapter permission to run BIST,
6214 * then runs BIST. If the adapter does not give permission after a
6215 * reasonable time, we will reset the adapter anyway. The impact of
6216 * resetting the adapter without warning the adapter is the risk of
6217 * losing the persistent error log on the adapter. If the adapter is
6218 * reset while it is writing to the flash on the adapter, the flash
6219 * segment will have bad ECC and be zeroed.
6220 *
6221 * Return value:
6222 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6223 **/
6224static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6225{
6226 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6227 int rc = IPR_RC_JOB_RETURN;
6228
6229 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6230 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6231 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6232 } else {
6233 ipr_cmd->job_step = ipr_reset_start_bist;
6234 rc = IPR_RC_JOB_CONTINUE;
6235 }
6236
6237 return rc;
6238}
6239
6240/**
6241 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6242 * @ipr_cmd: ipr command struct
6243 *
6244 * Description: This function alerts the adapter that it will be reset.
6245 * If memory space is not currently enabled, proceed directly
6246 * to running BIST on the adapter. The timer must always be started
6247 * so we guarantee we do not run BIST from ipr_isr.
6248 *
6249 * Return value:
6250 * IPR_RC_JOB_RETURN
6251 **/
6252static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6253{
6254 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6255 u16 cmd_reg;
6256 int rc;
6257
6258 ENTER;
6259 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6260
6261 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6262 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6263 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6264 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6265 } else {
6266 ipr_cmd->job_step = ipr_reset_start_bist;
6267 }
6268
6269 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6270 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6271
6272 LEAVE;
6273 return IPR_RC_JOB_RETURN;
6274}
6275
6276/**
6277 * ipr_reset_ucode_download_done - Microcode download completion
6278 * @ipr_cmd: ipr command struct
6279 *
6280 * Description: This function unmaps the microcode download buffer.
6281 *
6282 * Return value:
6283 * IPR_RC_JOB_CONTINUE
6284 **/
6285static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6286{
6287 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6288 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6289
6290 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6291 sglist->num_sg, DMA_TO_DEVICE);
6292
6293 ipr_cmd->job_step = ipr_reset_alert;
6294 return IPR_RC_JOB_CONTINUE;
6295}
6296
6297/**
6298 * ipr_reset_ucode_download - Download microcode to the adapter
6299 * @ipr_cmd: ipr command struct
6300 *
6301 * Description: This function checks to see if it there is microcode
6302 * to download to the adapter. If there is, a download is performed.
6303 *
6304 * Return value:
6305 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6306 **/
6307static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6308{
6309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6310 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6311
6312 ENTER;
6313 ipr_cmd->job_step = ipr_reset_alert;
6314
6315 if (!sglist)
6316 return IPR_RC_JOB_CONTINUE;
6317
6318 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6319 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6320 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6321 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6322 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6323 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6324 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6325
brking@us.ibm.com12baa422005-11-01 17:01:27 -06006326 ipr_build_ucode_ioadl(ipr_cmd, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006327 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6328
6329 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6330 IPR_WRITE_BUFFER_TIMEOUT);
6331
6332 LEAVE;
6333 return IPR_RC_JOB_RETURN;
6334}
6335
6336/**
6337 * ipr_reset_shutdown_ioa - Shutdown the adapter
6338 * @ipr_cmd: ipr command struct
6339 *
6340 * Description: This function issues an adapter shutdown of the
6341 * specified type to the specified adapter as part of the
6342 * adapter reset job.
6343 *
6344 * Return value:
6345 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6346 **/
6347static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6348{
6349 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6350 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6351 unsigned long timeout;
6352 int rc = IPR_RC_JOB_CONTINUE;
6353
6354 ENTER;
6355 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6356 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6357 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6358 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6359 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6360
6361 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6362 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6363 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6364 timeout = IPR_INTERNAL_TIMEOUT;
6365 else
6366 timeout = IPR_SHUTDOWN_TIMEOUT;
6367
6368 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6369
6370 rc = IPR_RC_JOB_RETURN;
6371 ipr_cmd->job_step = ipr_reset_ucode_download;
6372 } else
6373 ipr_cmd->job_step = ipr_reset_alert;
6374
6375 LEAVE;
6376 return rc;
6377}
6378
6379/**
6380 * ipr_reset_ioa_job - Adapter reset job
6381 * @ipr_cmd: ipr command struct
6382 *
6383 * Description: This function is the job router for the adapter reset job.
6384 *
6385 * Return value:
6386 * none
6387 **/
6388static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6389{
6390 u32 rc, ioasc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006391 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6392
6393 do {
6394 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6395
6396 if (ioa_cfg->reset_cmd != ipr_cmd) {
6397 /*
6398 * We are doing nested adapter resets and this is
6399 * not the current reset job.
6400 */
6401 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6402 return;
6403 }
6404
6405 if (IPR_IOASC_SENSE_KEY(ioasc)) {
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06006406 rc = ipr_cmd->job_step_failed(ipr_cmd);
6407 if (rc == IPR_RC_JOB_RETURN)
6408 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006409 }
6410
6411 ipr_reinit_ipr_cmnd(ipr_cmd);
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06006412 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006413 rc = ipr_cmd->job_step(ipr_cmd);
6414 } while(rc == IPR_RC_JOB_CONTINUE);
6415}
6416
6417/**
6418 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6419 * @ioa_cfg: ioa config struct
6420 * @job_step: first job step of reset job
6421 * @shutdown_type: shutdown type
6422 *
6423 * Description: This function will initiate the reset of the given adapter
6424 * starting at the selected job step.
6425 * If the caller needs to wait on the completion of the reset,
6426 * the caller must sleep on the reset_wait_q.
6427 *
6428 * Return value:
6429 * none
6430 **/
6431static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6432 int (*job_step) (struct ipr_cmnd *),
6433 enum ipr_shutdown_type shutdown_type)
6434{
6435 struct ipr_cmnd *ipr_cmd;
6436
6437 ioa_cfg->in_reset_reload = 1;
6438 ioa_cfg->allow_cmds = 0;
6439 scsi_block_requests(ioa_cfg->host);
6440
6441 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6442 ioa_cfg->reset_cmd = ipr_cmd;
6443 ipr_cmd->job_step = job_step;
6444 ipr_cmd->u.shutdown_type = shutdown_type;
6445
6446 ipr_reset_ioa_job(ipr_cmd);
6447}
6448
6449/**
6450 * ipr_initiate_ioa_reset - Initiate an adapter reset
6451 * @ioa_cfg: ioa config struct
6452 * @shutdown_type: shutdown type
6453 *
6454 * Description: This function will initiate the reset of the given adapter.
6455 * If the caller needs to wait on the completion of the reset,
6456 * the caller must sleep on the reset_wait_q.
6457 *
6458 * Return value:
6459 * none
6460 **/
6461static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6462 enum ipr_shutdown_type shutdown_type)
6463{
6464 if (ioa_cfg->ioa_is_dead)
6465 return;
6466
6467 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6468 ioa_cfg->sdt_state = ABORT_DUMP;
6469
6470 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6471 dev_err(&ioa_cfg->pdev->dev,
6472 "IOA taken offline - error recovery failed\n");
6473
6474 ioa_cfg->reset_retries = 0;
6475 ioa_cfg->ioa_is_dead = 1;
6476
6477 if (ioa_cfg->in_ioa_bringdown) {
6478 ioa_cfg->reset_cmd = NULL;
6479 ioa_cfg->in_reset_reload = 0;
6480 ipr_fail_all_ops(ioa_cfg);
6481 wake_up_all(&ioa_cfg->reset_wait_q);
6482
6483 spin_unlock_irq(ioa_cfg->host->host_lock);
6484 scsi_unblock_requests(ioa_cfg->host);
6485 spin_lock_irq(ioa_cfg->host->host_lock);
6486 return;
6487 } else {
6488 ioa_cfg->in_ioa_bringdown = 1;
6489 shutdown_type = IPR_SHUTDOWN_NONE;
6490 }
6491 }
6492
6493 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6494 shutdown_type);
6495}
6496
6497/**
Linas Vepstasf8a88b192006-02-03 16:52:42 -06006498 * ipr_reset_freeze - Hold off all I/O activity
6499 * @ipr_cmd: ipr command struct
6500 *
6501 * Description: If the PCI slot is frozen, hold off all I/O
6502 * activity; then, as soon as the slot is available again,
6503 * initiate an adapter reset.
6504 */
6505static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6506{
6507 /* Disallow new interrupts, avoid loop */
6508 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6509 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6510 ipr_cmd->done = ipr_reset_ioa_job;
6511 return IPR_RC_JOB_RETURN;
6512}
6513
6514/**
6515 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6516 * @pdev: PCI device struct
6517 *
6518 * Description: This routine is called to tell us that the PCI bus
6519 * is down. Can't do anything here, except put the device driver
6520 * into a holding pattern, waiting for the PCI bus to come back.
6521 */
6522static void ipr_pci_frozen(struct pci_dev *pdev)
6523{
6524 unsigned long flags = 0;
6525 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6526
6527 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6528 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6530}
6531
6532/**
6533 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6534 * @pdev: PCI device struct
6535 *
6536 * Description: This routine is called by the pci error recovery
6537 * code after the PCI slot has been reset, just before we
6538 * should resume normal operations.
6539 */
6540static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6541{
6542 unsigned long flags = 0;
6543 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6544
6545 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6546 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6547 IPR_SHUTDOWN_NONE);
6548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6549 return PCI_ERS_RESULT_RECOVERED;
6550}
6551
6552/**
6553 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6554 * @pdev: PCI device struct
6555 *
6556 * Description: This routine is called when the PCI bus has
6557 * permanently failed.
6558 */
6559static void ipr_pci_perm_failure(struct pci_dev *pdev)
6560{
6561 unsigned long flags = 0;
6562 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6563
6564 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6565 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6566 ioa_cfg->sdt_state = ABORT_DUMP;
6567 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6568 ioa_cfg->in_ioa_bringdown = 1;
6569 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6570 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6571}
6572
6573/**
6574 * ipr_pci_error_detected - Called when a PCI error is detected.
6575 * @pdev: PCI device struct
6576 * @state: PCI channel state
6577 *
6578 * Description: Called when a PCI error is detected.
6579 *
6580 * Return value:
6581 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6582 */
6583static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6584 pci_channel_state_t state)
6585{
6586 switch (state) {
6587 case pci_channel_io_frozen:
6588 ipr_pci_frozen(pdev);
6589 return PCI_ERS_RESULT_NEED_RESET;
6590 case pci_channel_io_perm_failure:
6591 ipr_pci_perm_failure(pdev);
6592 return PCI_ERS_RESULT_DISCONNECT;
6593 break;
6594 default:
6595 break;
6596 }
6597 return PCI_ERS_RESULT_NEED_RESET;
6598}
6599
6600/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07006601 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6602 * @ioa_cfg: ioa cfg struct
6603 *
6604 * Description: This is the second phase of adapter intialization
6605 * This function takes care of initilizing the adapter to the point
6606 * where it can accept new commands.
6607
6608 * Return value:
6609 * 0 on sucess / -EIO on failure
6610 **/
6611static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6612{
6613 int rc = 0;
6614 unsigned long host_lock_flags = 0;
6615
6616 ENTER;
6617 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6618 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06006619 if (ioa_cfg->needs_hard_reset) {
6620 ioa_cfg->needs_hard_reset = 0;
6621 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6622 } else
6623 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6624 IPR_SHUTDOWN_NONE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006625
6626 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6627 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6628 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6629
6630 if (ioa_cfg->ioa_is_dead) {
6631 rc = -EIO;
6632 } else if (ipr_invalid_adapter(ioa_cfg)) {
6633 if (!ipr_testmode)
6634 rc = -EIO;
6635
6636 dev_err(&ioa_cfg->pdev->dev,
6637 "Adapter not supported in this hardware configuration.\n");
6638 }
6639
6640 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6641
6642 LEAVE;
6643 return rc;
6644}
6645
6646/**
6647 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6648 * @ioa_cfg: ioa config struct
6649 *
6650 * Return value:
6651 * none
6652 **/
6653static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6654{
6655 int i;
6656
6657 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6658 if (ioa_cfg->ipr_cmnd_list[i])
6659 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6660 ioa_cfg->ipr_cmnd_list[i],
6661 ioa_cfg->ipr_cmnd_list_dma[i]);
6662
6663 ioa_cfg->ipr_cmnd_list[i] = NULL;
6664 }
6665
6666 if (ioa_cfg->ipr_cmd_pool)
6667 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6668
6669 ioa_cfg->ipr_cmd_pool = NULL;
6670}
6671
6672/**
6673 * ipr_free_mem - Frees memory allocated for an adapter
6674 * @ioa_cfg: ioa cfg struct
6675 *
6676 * Return value:
6677 * nothing
6678 **/
6679static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6680{
6681 int i;
6682
6683 kfree(ioa_cfg->res_entries);
6684 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6685 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6686 ipr_free_cmd_blks(ioa_cfg);
6687 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6688 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6689 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6690 ioa_cfg->cfg_table,
6691 ioa_cfg->cfg_table_dma);
6692
6693 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6694 pci_free_consistent(ioa_cfg->pdev,
6695 sizeof(struct ipr_hostrcb),
6696 ioa_cfg->hostrcb[i],
6697 ioa_cfg->hostrcb_dma[i]);
6698 }
6699
6700 ipr_free_dump(ioa_cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006701 kfree(ioa_cfg->trace);
6702}
6703
6704/**
6705 * ipr_free_all_resources - Free all allocated resources for an adapter.
6706 * @ipr_cmd: ipr command struct
6707 *
6708 * This function frees all allocated resources for the
6709 * specified adapter.
6710 *
6711 * Return value:
6712 * none
6713 **/
6714static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6715{
6716 struct pci_dev *pdev = ioa_cfg->pdev;
6717
6718 ENTER;
6719 free_irq(pdev->irq, ioa_cfg);
6720 iounmap(ioa_cfg->hdw_dma_regs);
6721 pci_release_regions(pdev);
6722 ipr_free_mem(ioa_cfg);
6723 scsi_host_put(ioa_cfg->host);
6724 pci_disable_device(pdev);
6725 LEAVE;
6726}
6727
6728/**
6729 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6730 * @ioa_cfg: ioa config struct
6731 *
6732 * Return value:
6733 * 0 on success / -ENOMEM on allocation failure
6734 **/
6735static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6736{
6737 struct ipr_cmnd *ipr_cmd;
6738 struct ipr_ioarcb *ioarcb;
6739 dma_addr_t dma_addr;
6740 int i;
6741
6742 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6743 sizeof(struct ipr_cmnd), 8, 0);
6744
6745 if (!ioa_cfg->ipr_cmd_pool)
6746 return -ENOMEM;
6747
6748 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6749 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
6750
6751 if (!ipr_cmd) {
6752 ipr_free_cmd_blks(ioa_cfg);
6753 return -ENOMEM;
6754 }
6755
6756 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6757 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6758 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6759
6760 ioarcb = &ipr_cmd->ioarcb;
6761 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6762 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6763 ioarcb->write_ioadl_addr =
6764 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6765 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6766 ioarcb->ioasa_host_pci_addr =
6767 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6768 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6769 ipr_cmd->cmd_index = i;
6770 ipr_cmd->ioa_cfg = ioa_cfg;
6771 ipr_cmd->sense_buffer_dma = dma_addr +
6772 offsetof(struct ipr_cmnd, sense_buffer);
6773
6774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6775 }
6776
6777 return 0;
6778}
6779
6780/**
6781 * ipr_alloc_mem - Allocate memory for an adapter
6782 * @ioa_cfg: ioa config struct
6783 *
6784 * Return value:
6785 * 0 on success / non-zero for error
6786 **/
6787static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6788{
6789 struct pci_dev *pdev = ioa_cfg->pdev;
6790 int i, rc = -ENOMEM;
6791
6792 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006793 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006794 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
6795
6796 if (!ioa_cfg->res_entries)
6797 goto out;
6798
Linus Torvalds1da177e2005-04-16 15:20:36 -07006799 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
6800 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
6801
6802 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
6803 sizeof(struct ipr_misc_cbs),
6804 &ioa_cfg->vpd_cbs_dma);
6805
6806 if (!ioa_cfg->vpd_cbs)
6807 goto out_free_res_entries;
6808
6809 if (ipr_alloc_cmd_blks(ioa_cfg))
6810 goto out_free_vpd_cbs;
6811
6812 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
6813 sizeof(u32) * IPR_NUM_CMD_BLKS,
6814 &ioa_cfg->host_rrq_dma);
6815
6816 if (!ioa_cfg->host_rrq)
6817 goto out_ipr_free_cmd_blocks;
6818
6819 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
6820 sizeof(struct ipr_config_table),
6821 &ioa_cfg->cfg_table_dma);
6822
6823 if (!ioa_cfg->cfg_table)
6824 goto out_free_host_rrq;
6825
6826 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6827 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
6828 sizeof(struct ipr_hostrcb),
6829 &ioa_cfg->hostrcb_dma[i]);
6830
6831 if (!ioa_cfg->hostrcb[i])
6832 goto out_free_hostrcb_dma;
6833
6834 ioa_cfg->hostrcb[i]->hostrcb_dma =
6835 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
6836 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
6837 }
6838
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006839 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006840 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
6841
6842 if (!ioa_cfg->trace)
6843 goto out_free_hostrcb_dma;
6844
Linus Torvalds1da177e2005-04-16 15:20:36 -07006845 rc = 0;
6846out:
6847 LEAVE;
6848 return rc;
6849
6850out_free_hostrcb_dma:
6851 while (i-- > 0) {
6852 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
6853 ioa_cfg->hostrcb[i],
6854 ioa_cfg->hostrcb_dma[i]);
6855 }
6856 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
6857 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
6858out_free_host_rrq:
6859 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6860 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6861out_ipr_free_cmd_blocks:
6862 ipr_free_cmd_blks(ioa_cfg);
6863out_free_vpd_cbs:
6864 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
6865 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6866out_free_res_entries:
6867 kfree(ioa_cfg->res_entries);
6868 goto out;
6869}
6870
6871/**
6872 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
6873 * @ioa_cfg: ioa config struct
6874 *
6875 * Return value:
6876 * none
6877 **/
6878static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
6879{
6880 int i;
6881
6882 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6883 ioa_cfg->bus_attr[i].bus = i;
6884 ioa_cfg->bus_attr[i].qas_enabled = 0;
6885 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
6886 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
6887 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
6888 else
6889 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
6890 }
6891}
6892
6893/**
6894 * ipr_init_ioa_cfg - Initialize IOA config struct
6895 * @ioa_cfg: ioa config struct
6896 * @host: scsi host struct
6897 * @pdev: PCI dev struct
6898 *
6899 * Return value:
6900 * none
6901 **/
6902static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
6903 struct Scsi_Host *host, struct pci_dev *pdev)
6904{
6905 const struct ipr_interrupt_offsets *p;
6906 struct ipr_interrupts *t;
6907 void __iomem *base;
6908
6909 ioa_cfg->host = host;
6910 ioa_cfg->pdev = pdev;
6911 ioa_cfg->log_level = ipr_log_level;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06006912 ioa_cfg->doorbell = IPR_DOORBELL;
brking@us.ibm.com32d29772005-11-01 17:02:01 -06006913 if (!ipr_auto_create)
6914 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006915 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
6916 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
6917 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
6918 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
6919 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
6920 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
6921 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
6922 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
6923
6924 INIT_LIST_HEAD(&ioa_cfg->free_q);
6925 INIT_LIST_HEAD(&ioa_cfg->pending_q);
6926 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
6927 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
6928 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
6929 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
David Howellsc4028952006-11-22 14:57:56 +00006930 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006931 init_waitqueue_head(&ioa_cfg->reset_wait_q);
6932 ioa_cfg->sdt_state = INACTIVE;
brking@us.ibm.com62275042005-11-01 17:01:14 -06006933 if (ipr_enable_cache)
6934 ioa_cfg->cache_state = CACHE_ENABLED;
6935 else
6936 ioa_cfg->cache_state = CACHE_DISABLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006937
6938 ipr_initialize_bus_attr(ioa_cfg);
6939
6940 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
6941 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
6942 host->max_channel = IPR_MAX_BUS_TO_SCAN;
6943 host->unique_id = host->host_no;
6944 host->max_cmd_len = IPR_MAX_CDB_LEN;
6945 pci_set_drvdata(pdev, ioa_cfg);
6946
6947 p = &ioa_cfg->chip_cfg->regs;
6948 t = &ioa_cfg->regs;
6949 base = ioa_cfg->hdw_dma_regs;
6950
6951 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
6952 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
6953 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
6954 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
6955 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
6956 t->ioarrin_reg = base + p->ioarrin_reg;
6957 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
6958 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
6959 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
6960}
6961
6962/**
6963 * ipr_get_chip_cfg - Find adapter chip configuration
6964 * @dev_id: PCI device id struct
6965 *
6966 * Return value:
6967 * ptr to chip config on success / NULL on failure
6968 **/
6969static const struct ipr_chip_cfg_t * __devinit
6970ipr_get_chip_cfg(const struct pci_device_id *dev_id)
6971{
6972 int i;
6973
6974 if (dev_id->driver_data)
6975 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
6976
6977 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
6978 if (ipr_chip[i].vendor == dev_id->vendor &&
6979 ipr_chip[i].device == dev_id->device)
6980 return ipr_chip[i].cfg;
6981 return NULL;
6982}
6983
6984/**
6985 * ipr_probe_ioa - Allocates memory and does first stage of initialization
6986 * @pdev: PCI device struct
6987 * @dev_id: PCI device id struct
6988 *
6989 * Return value:
6990 * 0 on success / non-zero on failure
6991 **/
6992static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
6993 const struct pci_device_id *dev_id)
6994{
6995 struct ipr_ioa_cfg *ioa_cfg;
6996 struct Scsi_Host *host;
6997 unsigned long ipr_regs_pci;
6998 void __iomem *ipr_regs;
Eric Sesterhenna2a65a32006-09-25 16:59:07 -07006999 int rc = PCIBIOS_SUCCESSFUL;
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06007000 volatile u32 mask, uproc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007001
7002 ENTER;
7003
7004 if ((rc = pci_enable_device(pdev))) {
7005 dev_err(&pdev->dev, "Cannot enable adapter\n");
7006 goto out;
7007 }
7008
7009 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7010
7011 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7012
7013 if (!host) {
7014 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7015 rc = -ENOMEM;
7016 goto out_disable;
7017 }
7018
7019 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7020 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
Brian King35a39692006-09-25 12:39:20 -05007021 host->transportt = &ipr_transport_template;
7022 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7023 sata_port_info.flags, &ipr_sata_ops);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007024
7025 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7026
7027 if (!ioa_cfg->chip_cfg) {
7028 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7029 dev_id->vendor, dev_id->device);
7030 goto out_scsi_host_put;
7031 }
7032
7033 ipr_regs_pci = pci_resource_start(pdev, 0);
7034
7035 rc = pci_request_regions(pdev, IPR_NAME);
7036 if (rc < 0) {
7037 dev_err(&pdev->dev,
7038 "Couldn't register memory range of registers\n");
7039 goto out_scsi_host_put;
7040 }
7041
7042 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7043
7044 if (!ipr_regs) {
7045 dev_err(&pdev->dev,
7046 "Couldn't map memory range of registers\n");
7047 rc = -ENOMEM;
7048 goto out_release_regions;
7049 }
7050
7051 ioa_cfg->hdw_dma_regs = ipr_regs;
7052 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7053 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7054
7055 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7056
7057 pci_set_master(pdev);
7058
7059 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7060 if (rc < 0) {
7061 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7062 goto cleanup_nomem;
7063 }
7064
7065 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7066 ioa_cfg->chip_cfg->cache_line_size);
7067
7068 if (rc != PCIBIOS_SUCCESSFUL) {
7069 dev_err(&pdev->dev, "Write of cache line size failed\n");
7070 rc = -EIO;
7071 goto cleanup_nomem;
7072 }
7073
7074 /* Save away PCI config space for use following IOA reset */
7075 rc = pci_save_state(pdev);
7076
7077 if (rc != PCIBIOS_SUCCESSFUL) {
7078 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7079 rc = -EIO;
7080 goto cleanup_nomem;
7081 }
7082
7083 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7084 goto cleanup_nomem;
7085
7086 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7087 goto cleanup_nomem;
7088
7089 rc = ipr_alloc_mem(ioa_cfg);
7090 if (rc < 0) {
7091 dev_err(&pdev->dev,
7092 "Couldn't allocate enough memory for device driver!\n");
7093 goto cleanup_nomem;
7094 }
7095
brking@us.ibm.comce155cc2005-11-17 09:35:12 -06007096 /*
7097 * If HRRQ updated interrupt is not masked, or reset alert is set,
7098 * the card is in an unknown state and needs a hard reset
7099 */
7100 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7101 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7102 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7103 ioa_cfg->needs_hard_reset = 1;
7104
Linus Torvalds1da177e2005-04-16 15:20:36 -07007105 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
Thomas Gleixner1d6f3592006-07-01 19:29:42 -07007106 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007107
7108 if (rc) {
7109 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7110 pdev->irq, rc);
7111 goto cleanup_nolog;
7112 }
7113
7114 spin_lock(&ipr_driver_lock);
7115 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7116 spin_unlock(&ipr_driver_lock);
7117
7118 LEAVE;
7119out:
7120 return rc;
7121
7122cleanup_nolog:
7123 ipr_free_mem(ioa_cfg);
7124cleanup_nomem:
7125 iounmap(ipr_regs);
7126out_release_regions:
7127 pci_release_regions(pdev);
7128out_scsi_host_put:
7129 scsi_host_put(host);
7130out_disable:
7131 pci_disable_device(pdev);
7132 goto out;
7133}
7134
7135/**
7136 * ipr_scan_vsets - Scans for VSET devices
7137 * @ioa_cfg: ioa config struct
7138 *
7139 * Description: Since the VSET resources do not follow SAM in that we can have
7140 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7141 *
7142 * Return value:
7143 * none
7144 **/
7145static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7146{
7147 int target, lun;
7148
7149 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7150 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7151 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7152}
7153
7154/**
7155 * ipr_initiate_ioa_bringdown - Bring down an adapter
7156 * @ioa_cfg: ioa config struct
7157 * @shutdown_type: shutdown type
7158 *
7159 * Description: This function will initiate bringing down the adapter.
7160 * This consists of issuing an IOA shutdown to the adapter
7161 * to flush the cache, and running BIST.
7162 * If the caller needs to wait on the completion of the reset,
7163 * the caller must sleep on the reset_wait_q.
7164 *
7165 * Return value:
7166 * none
7167 **/
7168static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7169 enum ipr_shutdown_type shutdown_type)
7170{
7171 ENTER;
7172 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7173 ioa_cfg->sdt_state = ABORT_DUMP;
7174 ioa_cfg->reset_retries = 0;
7175 ioa_cfg->in_ioa_bringdown = 1;
7176 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7177 LEAVE;
7178}
7179
7180/**
7181 * __ipr_remove - Remove a single adapter
7182 * @pdev: pci device struct
7183 *
7184 * Adapter hot plug remove entry point.
7185 *
7186 * Return value:
7187 * none
7188 **/
7189static void __ipr_remove(struct pci_dev *pdev)
7190{
7191 unsigned long host_lock_flags = 0;
7192 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7193 ENTER;
7194
7195 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7196 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7197
7198 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7199 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
brking@us.ibm.com 5cbf5ea2005-05-02 19:50:47 -05007200 flush_scheduled_work();
Linus Torvalds1da177e2005-04-16 15:20:36 -07007201 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7202
7203 spin_lock(&ipr_driver_lock);
7204 list_del(&ioa_cfg->queue);
7205 spin_unlock(&ipr_driver_lock);
7206
7207 if (ioa_cfg->sdt_state == ABORT_DUMP)
7208 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7210
7211 ipr_free_all_resources(ioa_cfg);
7212
7213 LEAVE;
7214}
7215
7216/**
7217 * ipr_remove - IOA hot plug remove entry point
7218 * @pdev: pci device struct
7219 *
7220 * Adapter hot plug remove entry point.
7221 *
7222 * Return value:
7223 * none
7224 **/
7225static void ipr_remove(struct pci_dev *pdev)
7226{
7227 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7228
7229 ENTER;
7230
Linus Torvalds1da177e2005-04-16 15:20:36 -07007231 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7232 &ipr_trace_attr);
7233 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7234 &ipr_dump_attr);
7235 scsi_remove_host(ioa_cfg->host);
7236
7237 __ipr_remove(pdev);
7238
7239 LEAVE;
7240}
7241
7242/**
7243 * ipr_probe - Adapter hot plug add entry point
7244 *
7245 * Return value:
7246 * 0 on success / non-zero on failure
7247 **/
7248static int __devinit ipr_probe(struct pci_dev *pdev,
7249 const struct pci_device_id *dev_id)
7250{
7251 struct ipr_ioa_cfg *ioa_cfg;
7252 int rc;
7253
7254 rc = ipr_probe_ioa(pdev, dev_id);
7255
7256 if (rc)
7257 return rc;
7258
7259 ioa_cfg = pci_get_drvdata(pdev);
7260 rc = ipr_probe_ioa_part2(ioa_cfg);
7261
7262 if (rc) {
7263 __ipr_remove(pdev);
7264 return rc;
7265 }
7266
7267 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7268
7269 if (rc) {
7270 __ipr_remove(pdev);
7271 return rc;
7272 }
7273
7274 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7275 &ipr_trace_attr);
7276
7277 if (rc) {
7278 scsi_remove_host(ioa_cfg->host);
7279 __ipr_remove(pdev);
7280 return rc;
7281 }
7282
7283 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7284 &ipr_dump_attr);
7285
7286 if (rc) {
7287 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7288 &ipr_trace_attr);
7289 scsi_remove_host(ioa_cfg->host);
7290 __ipr_remove(pdev);
7291 return rc;
7292 }
7293
7294 scsi_scan_host(ioa_cfg->host);
7295 ipr_scan_vsets(ioa_cfg);
7296 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7297 ioa_cfg->allow_ml_add_del = 1;
brking@us.ibm.com11cd8f12005-11-01 17:00:11 -06007298 ioa_cfg->host->max_channel = IPR_VSET_BUS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07007299 schedule_work(&ioa_cfg->work_q);
7300 return 0;
7301}
7302
7303/**
7304 * ipr_shutdown - Shutdown handler.
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007305 * @pdev: pci device struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07007306 *
7307 * This function is invoked upon system shutdown/reboot. It will issue
7308 * an adapter shutdown to the adapter to flush the write cache.
7309 *
7310 * Return value:
7311 * none
7312 **/
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007313static void ipr_shutdown(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07007314{
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007315 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007316 unsigned long lock_flags = 0;
7317
7318 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7319 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7320 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7321 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7322}
7323
7324static struct pci_device_id ipr_pci_table[] __devinitdata = {
7325 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7326 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
7327 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7328 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7329 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
7330 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7331 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7332 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
7333 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7334 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7335 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
7336 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7337 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7338 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
7339 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7340 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7341 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
7342 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7343 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7344 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
7345 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06007346 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7347 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B,
7348 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7349 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7350 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
7351 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7352 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7353 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
7354 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7355 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7356 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
7357 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
7358 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7359 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
7360 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07007361 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7362 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
7363 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
7364 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7365 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
7366 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06007367 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7368 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F,
7369 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07007370 { }
7371};
7372MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7373
Linas Vepstasf8a88b192006-02-03 16:52:42 -06007374static struct pci_error_handlers ipr_err_handler = {
7375 .error_detected = ipr_pci_error_detected,
7376 .slot_reset = ipr_pci_slot_reset,
7377};
7378
Linus Torvalds1da177e2005-04-16 15:20:36 -07007379static struct pci_driver ipr_driver = {
7380 .name = IPR_NAME,
7381 .id_table = ipr_pci_table,
7382 .probe = ipr_probe,
7383 .remove = ipr_remove,
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07007384 .shutdown = ipr_shutdown,
Linas Vepstasf8a88b192006-02-03 16:52:42 -06007385 .err_handler = &ipr_err_handler,
Linus Torvalds1da177e2005-04-16 15:20:36 -07007386};
7387
7388/**
7389 * ipr_init - Module entry point
7390 *
7391 * Return value:
7392 * 0 on success / negative value on failure
7393 **/
7394static int __init ipr_init(void)
7395{
7396 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7397 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7398
Henrik Kretzschmardcbccbde2006-09-25 16:58:58 -07007399 return pci_register_driver(&ipr_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -07007400}
7401
7402/**
7403 * ipr_exit - Module unload
7404 *
7405 * Module unload entry point.
7406 *
7407 * Return value:
7408 * none
7409 **/
7410static void __exit ipr_exit(void)
7411{
7412 pci_unregister_driver(&ipr_driver);
7413}
7414
7415module_init(ipr_init);
7416module_exit(ipr_exit);